Purchase High Quality Bottling Line from China Topper Bottling Machine Manufacturer Co. Ltd., A Reputable Plant in China. Click to Learn More! Fri, 22 May 2026 12:25:11 +0000 Laminas_Feed_Writer 2 (https://getlaminas.org) https://www.xbottling.com/ sales@xbottling.com (Topper) Topper Mon, 24 Jun 2024 01:05:58 +0000 https://www.xbottling.com/links/cnmfrs-com-best-china-b2b-business-platform.html?utm_source=rss https://www.xbottling.com/links/cnmfrs-com-best-china-b2b-business-platform.html?utm_source=rss Introduction to B2B Marketplaces in China
In recent years, there has been a significant shift towards digital platforms in the business world, driven by the rise of e-commerce. B2B transactions are increasingly moving online. China, the world's largest e-commerce market, has seen a surge in specialized B2B marketplaces like CNMFRS, which focus on manufacturers, suppliers, and exporters. This blog explores how these platforms benefit China's industries, particularly in agriculture, food services, chemicals, industrial machinery, and maintenance, repair, and operations (MRO), addressing the fragmentation challenge inherent in B2B industries.

What is CNMFRS?
CNMFRS.com is a leading B2B portal that offers a comprehensive directory of China's top manufacturers. It connects Chinese manufacturers, suppliers, and exporters with global buyers across diverse industries like textiles, agriculture, and electronics. The platform simplifies procurement with advanced search tools and fosters mutually beneficial partnerships.

Wide Range of Product Categories
CNMFRS.com boasts a wide range of product categories, serving as a convenient one-stop-shop for buyers. Specializing in electrical equipment, construction materials, electronics, tools, industrial parts, and machinery, CNMFRS.com also offers promotional services to manufacturers and suppliers. It features detailed product displays, company profiles, and real-time updates, facilitating domestic small and medium-sized enterprises in enhancing their online presence and broadening their market outreach.

B2B marketplaces like CNMFRS.com are transforming China's business landscape by facilitating efficient online transactions between manufacturers, suppliers, and global buyers. These platforms not only simplify procurement but also help domestic SMEs enhance their online presence and expand their market reach. As digitalization continues to drive the e-commerce boom, B2B marketplaces will play an increasingly vital role in connecting industries and fostering growth in China's diverse sectors.]]> 0 Sun, 12 Feb 2023 15:13:29 +0000 https://www.xbottling.com/links/china-water-filling-line-plant.html?utm_source=rss https://www.xbottling.com/links/china-water-filling-line-plant.html?utm_source=rss 0 Tue, 25 Oct 2022 04:46:33 +0000 https://www.xbottling.com/news/development-of-edible-oil-filling-machinery.html?utm_source=rss https://www.xbottling.com/news/development-of-edible-oil-filling-machinery.html?utm_source=rss In recent years, China's oil processing industry has developed rapidly, but it is limited by market and technology, and the development of edible oil packaging machinery is relatively slow. Before 2006, middle and high-end edible oil packaging equipment was mainly imported from abroad, which was basically monopolized by companies such as Weightpack, Sidel and Krones, etc., and only low-end packaging machinery with volumetric or liquid-level type could be produced in China, which was far behind the advanced foreign products in technology. Subsequently, due to the importance attached by the state to the safety of edible oil and the need for a development strategy, edible oil packaging machinery showed a high-speed development trend. Some domestic packaging machinery enterprises with strong processing and manufacturing capabilities have made the whole domestic production technology develop by leaps and bounds by introducing technology, digesting and absorbing it. Especially in recent years, domestic filling equipment has increased rapidly in the domestic market share. It is roughly estimated that among the relatively high-speed filling equipment newly purchased by domestic oil and fat enterprises, the proportion of domestic equipment has reached about 70%, and the imported equipment selected is mainly bottle box testing equipment and a few high-speed labeling machines or bottle-blowing machines. According to the situation of small packaging production lines purchased by several major domestic small packaging brand manufacturers in recent years, except bottle and box testing equipment and individual filling machines, almost all of them are domestic filling equipment. In terms of filling accuracy, domestic weighing and filling equipment have reached below ±2.0g (based on 5L products), and the qualified rate of capping has reached above 99.9%, which has basically reached or approached the technical level of imported equipment, which indicates that the design and manufacturing capacity of domestic edible oil packaging machinery has made considerable progress.
 
Development of filling machinery
 
1. Filling speed
High speed, energy saving and automation are the inevitable trends in the filling machinery industry. From the perspective of market sales, consumers are more inclined to small package products with small capacity and quick turnover, and the production capacity of the production line is gradually developing from low speed to high speed. The technology of high-precision weighing and filling production line with 6 000 bottles /h is relatively mature. Judging from the development prospect of edible oil demand in China and the manufacturing technology of packaging machinery, high-precision filling machine products with filling speed above 6 000 bottles /h and bottle blowing and filling machines are the future development directions.
 
2. Diversity of filling specifications
China's edible oil industry has experienced decades of development, and the product types and packaging forms have been greatly enriched. Consumers' requirements for packaging are also getting higher and higher, which requires edible oil processing enterprises to be innovative and changeable in packaging forms, and refined and beautiful in packaging quality. Due to the different product terminals, the requirements for filling specifications are also different, and the forms of packaged products are developing in a diversified direction. The commonly used 5L bottle specifications can no longer meet the market competition needs, and some oil and fat enterprises even have more than 10 product specifications. Under this market background, an edible oil filling production line must meet the requirements of various packaging specifications at the same time. Sometimes, it is necessary to switch the bottle types of different specifications (such as 1.8, 2.5, 4 and 5L, etc.), and sometimes it is desirable to switch between glass bottles and PET bottles. This requires the filling equipment to have strong adaptability, which can adapt to more kinds of filling materials, more specifications of filling containers and even different filling processes. As an equipment manufacturer, it must also meet the needs of the market. When replacing different bottle and box types, the accessories of related packaging equipment should be replaced in the shortest time, and the non-production time should be reduced as much as possible. This technology is called "quick replacement". At present, a high-end filling machine in China can fill different varieties (such as 5L, 4L, etc.) as well as glass bottles and PET bottles within a certain range. The switching of different varieties can be completed in a few minutes, which is quick and convenient.
 
3. Intelligent technology of packaging machinery
The high efficiency of the edible oil packaging production process is mainly realized by mechatronics technology and automatic control technology. Continuous automatic production equipment replaces intermittent semi-automatic production equipment so that the production line can realize continuous production, specialized operation, automatic adjustment and large-scale operation, which can significantly improve production efficiency and economic benefits. With the scale and centralization of the edible oil industry, high-speed and high-efficiency production equipment is needed, which puts forward higher requirements for the speed and performance of edible oil-filling machinery. At present, new intelligent equipment such as highly intelligent numerical control systems, encoders, digital control components and dynamic load control has been widely used in packaging machinery and equipment, which has the characteristics of independence, flexibility, correct operation, high efficiency and compatibility in the operation process. The mechatronics automation technology of edible oil packaging machinery has promoted the improvement of the overall level of domestic packaging equipment and large-scale production.
 
Application configuration of filling machinery
 
1. Filling machine
In the packaging production of edible oil, the filling is a very important link, and the quality of products is directly affected by the quality of filling technology and equipment. Because the physical and chemical properties of liquid materials are different, there are different requirements for filling. The packaging materials and containers are diverse, so when choosing a filling machine, besides the characteristics of the materials themselves, the packaging containers, filling precision, material value, packaging cost and production efficiency must also be comprehensively considered. Compared with the original semi-automatic form, the automatic edible oil filling machine realizes the integration of mechanical and electrical control for filling, which greatly reduces labor costs and is superior to the original semi-automatic machine in accuracy. The use of an automatic edible oil filling machine has greatly improved the working efficiency of the packaging line and reduced the cost of products. At present, there are two types of filling machines used in edible oil: rotary type and linear type. For domestic rotary filling machines, the capacity of 5L bottles can reach 6 000 bottles /h, and that of the linear filling machines with 5L bottles in double rows can reach 3 000 bottles/h. For mainstream varieties that don't need to change the bottle shape frequently, it is more appropriate to choose a rotary machine, while for filling products with small output and many varieties, a linear machine is more appropriate, which is beneficial to the change of bottle shape.
 
There are many filling methods and metering forms. At present, electronic weighing type, liquid level control type, volumetric type and induction flowmeter type are mainly used for edible oil. They all have their own characteristics and application scope. See Table 1 and Table 2. With the increasing demand for the precision of edible oil filling products, weighing filling machine is more and more applied to the filling of edible oil, which is a more accurate filling method that uses electronic weighing to control the filling quantity. Each electronic scale can independently set the value to be filled to ensure the adjustment of filling accuracy. The filling method is divided into two parts: pre-filling and fine-filling, and the electronic scale randomly detects the filling quality. When the filling quality reaches the set value, the electronic scale sends a signal to close all filling valves and stop filling. In the nozzle of the filling valve, the filling valve has a special lower valve cavity by adopting a special anti-dripping design. Through the special decompression of the valve cavity, a liquid film is formed, which has the functions of anti-foaming and anti-dripping.
 
The biggest advantage of weighing canning machines is cost saving. Based on 5L bottled oil, the average accuracy of domestic weighing canning machines can reach 2.0g (σ value), while the accuracy of a general canning machine is between 10-20 g. After comparison, an average 5L bottle of oil can save 10g of oil. According to the daily production scale of 40,000 bottles, it is estimated that about 400kg of oil can be saved every day, and 10.4t of the edible oil can be saved every month, which will produce very significant economic benefits.
 
Bottle-making machines

PET bottle is the most important packaging container for edible oil. Because of its advantages of a lightweight, good transparency, beautiful appearance and convenient transportation, it is gradually replacing glass containers and other packaging containers. In order to minimize the possible pollution in the filling process and the logistics links of packaging materials, more and more edible oils are filled by bottle-making and filling. Bottle-making machines are usually used in factories with a daily output of more than 20,000 boxes. Its most prominent advantage is that it reduces the transportation and storage of packages, which can avoid pollution to the maximum extent and reduce the intermediate cost.
 
There are two ways to make bottles: the one-step method and the two-step method. In the one-step method, the molding, cooling, heating, stretching, inflation and bottle taking-out of the parison are all completed on one machine in turn; The two-step rule is that the molding of parison and bottle blowing is carried out on two machines, namely, the first step is to mold the parison by injection molding, and the second step is to blow the bottle. At present, edible oil bottle-making is mostly a two-step bottle-making process.
 
In terms of production efficiency, product accuracy and energy consumption, bottle-blowing machines in China have always followed the advanced bottle-blowing machine technologies in Europe and America, such as high-speed bottle blowing machines produced in Italy, France and Japan. After nearly 10 years of development, domestic bottle-blowing machine production has gradually formed a scale effect. Focusing on the two major themes of energy saving and product innovation, we have made solid efforts to advance, and have successfully developed fully automatic bottle blowing machines for PET bottles of 5, 10 and 20L specifications, with a maximum capacity of 5L bottles reaching 8 000 bottles/h. Adopting the concept of full-automatic design, technical innovation has been made in servo-controlled heating system, PID closed-loop heating control system, fast energy-saving blowing molding system and bottle blank precise temperature control system, and its technical manufacturing has approached or reached the international advanced level. At the same time, the air recovery system of bottle-blowing machines has been developed, which can recover 30% ~ 50% of the air for reuse, thus greatly saving energy consumption. The produced PET bottle has a uniform wall thickness, high transparency and good product consistency. The conveying line system of the automatic bottle-blowing machine adopts the most advanced technology and the highest quality materials, which fully meets the requirements of fluency, flexibility and high efficiency. The modular structure is beneficial to transport different plastic bottles and products, and reduces the time for changing packaging specifications. This will break the technical monopoly of foreign multinational companies and effectively promote the development of China's packaging machinery and equipment manufacturing industry towards high quality, high efficiency and high energy saving.
 
Automatic labeling machines

There are many kinds of automatic labeling machines, which are suitable for all walks of life. With the fierce competition in the market, all products need labels to highlight their own brands, and the labels should also show the characteristics of the products, such as ingredient description, capacity description and manufacturer's information, etc., so the products must be labeled. Overall, the labeling accuracy and speed of German products are the first in the world, followed by Italian labeling machines. Although the accuracy and speed are not comparable to those of Germany, the advantage lies in its wide applicability. Domestic machinery manufacturers began to imitate German and Italian labeling machines in the mid-1990s, from manufacturing spare parts, to renovating and then making the whole machine, and gradually formed a scale. Since around 2003, it has developed rapidly, and the production speed is below 40 000 bottles /h (mainly in the beer and beverage industry). Before 2007, some large oil processing enterprises used imported labeling machines, while small factories used manual labeling or domestic labeling machines because of low and unstable output. In the edible oil industry, cold glue labeling machines and self-adhesive labeling machines are widely used at present. Self-adhesive labelers are mainly linear labelers, and the speed of applying 5L varieties is below 1 500 bottles/h. Self-adhesive labels are suitable for hard bottles such as glass bottles, and the labels are flat and not easy to wrinkle. Olive oil (glass bottles) are usually labeled with a self-adhesive label machine, with one label on the front and one label on the back. Straight-line double-sided self-adhesive label machine can be used for square bottles. If it's a PET bottle, the label can't be pasted flat because of the concave ribs on the surface, so it's easy to wrinkle. The cold labeling machines are basically rotary labeling machines, with good labeling quality, fewer wrinkles on the label surface, and low label cost. The speed of labeling 5L varieties is between 2 000 and 8 000 bottles/h. In recent years, the output of medium packaging oil (10 ~ 20L) has increased rapidly, so there is a demand for automatic labeling machines for medium packaging, and the speed is generally between 400 ~ 1 600 bottles/h. Cold glue labeling machine is the mainstream choice of the oil and fat industry at present. At present, some large oil and fat processing enterprises in China basically adopt cold glue labeling machines, mainly because of the following considerations: the speed is fast, and the production line with more than 3 000 bottles /h can only be rotary labeling machine; The cost of auxiliary materials is low and the output is large, so the material cost is strictly controlled, and the cost of coated paper labels is low; Good appearance, big brands have higher requirements for product appearance quality, and coated paper label is the best choice compared with PET soft bottle.
 
There is another kind of labeling machine, which is quite different from the principle of labeling machine, but it is also used in the oil industry and is suitable for bottles with irregular shapes. The principle is that the pre-cut annular sleeve PVC label is sleeved on the outer wall of the bottle, and then the PVC label is contracted through the heating channel, so as to be fastened on the bottle. At present, Arowana sesame oil (conical bottle) and Helium sunflower oil (elliptical bottle) all use labeling machines, and the production line speed is 3 000-5 000 bottles/h.
 
Conclusion

Edible oil is an essential consumer product for people's lives, and it is an important food that provides human body heat energy and essential fatty acids and promotes the absorption of fat-soluble vitamins. In order to further ensure the safety of edible oil consumption, bulk edible oil will be withdrawn from the consumer market one after another. The quality of edible oil filling machinery directly affects our living standards, and also relates to the production efficiency and profit of oil enterprises. At present, an all-in-one bottle-blowing and filling machine imported by a domestic oil processing enterprise, which represents the highest level of small packaging technology in the world today, has an accuracy of 1g. Besides avoiding bottle pollution to the maximum extent, it also has the ability to quickly change products. The bottle-blowing mold can be completely replaced in 20min and converted into other specifications. From this point of view, the filling machine with environmental protection, energy saving, high efficiency, high precision, intelligent control, diversified functions and integrated technology will be the inevitable trend of the development of the edible oil filling industry in China.
 ]]> 0 Tue, 25 Oct 2022 04:24:00 +0000 https://www.xbottling.com/news/sterile-blow-molded-bottle-packaging-of-dairy-products.html?utm_source=rss https://www.xbottling.com/news/sterile-blow-molded-bottle-packaging-of-dairy-products.html?utm_source=rss By increasing the shelf life of products, we can expand the sales channels and market share. Therefore, the progress of packaging technology of liquid dairy products is of great significance to large dairy production groups, but it is a contradiction between improving the shelf life and keeping the taste of liquid dairy products and keeping the appropriate cost. With the emergence of aseptic blow molding bottles and aseptic filling technology, a balance point has been found.
 
The composition of milk is very complex, and the vitamins in it are very sensitive to light. Ultraviolet and visible light can be absorbed by vitamins at 500nm, resulting in the loss of vitamins. Experts found through experiments (taste and gas) that when milk is exposed to light for several hours, the taste will change. Therefore, it is necessary to have barrier packaging containers and appropriate sterilization technology.

Sterilization technology and aseptic filling
The storage life of dairy products mainly depends on the influence of bacteria, yeast and granular objects on them. There are many ways to extend the shelf life of products. The traditional method is to first fill the product into the packaging container and then heat the product and the packaging container at a high temperature of 118℃-129℃. Heat and sterilize together. This method of heating disinfection is suitable for containers such as metal cans, glass cans, glass bottles and plastic HDPE bottles. In Europe, this method is widely used in the field of milk packaging. To realize this process, a hydraulic disinfection tower is a common technology. In the hydraulic disinfection tower, the pressure outside the bottle can offset the internal pressure caused by the high temperature of 118℃-129℃ inside the bottle, thus avoiding the deformation of the bottle. Although these methods are safe and effective, they are limited in application, such as the limitation of container shape. In addition, the glass container needs to be slowly heated and cooled to prevent its breakage, and the taste of the product is easy to change at high temperatures. The resulting problem is that the final product packaging shapes of various manufacturers are similar and lack creativity. So the aseptic packaging method was conceived. The aseptic packaging process is to sterilize the product and the packaging container respectively, and then carry out aseptic packaging with an aseptic filling machine. Its advantages are instant high-temperature sterilization, reducing the risk of product taste change, adapting to various packaging methods and shapes, and sterilizing according to the packaging forms required by users, such as tetra pack, aseptic plastic bag packaging, etc.

Blow molding sterile plastic bottle
Among all kinds of aseptic packaging, the plastic bottle is the most economical one. In particular, the aseptic plastic bottle molded by blow molding not only has all the advantages of ordinary plastic bottle packaging, but also can be made into multi-layer co-extrusion and in-mold labeling, so that the packaging effect is colorful, and the handle can be made for convenient use, and the cost can be reduced. The blow-molded sterile plastic bottle is a kind of plastic bottle that is completely sterile inside and free of yeast and other loose particles. Due to the sealing of the bottle mouth, the bottle is always kept sterile during storage and transportation to the aseptic filling machine. Just before filling, sterilize the outside of the bottle body with sterile liquid to ensure that the whole processing process such as re-opening, filling and re-sealing the bottle can be carried out in a sterile state. Compared with high-temperature sterilized plastic bottles before filling, aseptic blow bottles have higher reliability and lower cost. The principle is simple. Instead of cleaning and disinfecting dirty objects, it is better to make them pollution-free from the beginning. After the bottle is formed, it is sterilized, which not only has a high cost, and complicated equipment but also has high technical requirements for workers.
 
Manufacture of an aseptic blow bottle
During the blow molding process of the aseptic bottle, the plastic temperature is kept at about 200℃, which is recognized by the FDA as the condition of forming an aseptic surface. At this temperature, the air and metal contacting the container will not pollute the container. Blow-molded sterile plastic bottles adopt this principle. Usually, blow molding is extruding the molten plastic from an extruder to form a tubular or spherical parison, which is blow molded in a mold. During the mold closing process, the bottle blank is usually filled with low-pressure gas to ensure that the bottle blank will not be connected frequently before blow molding. The aseptic bottle blowing technology developed by TECHNE Company of Italy uses aseptic compressed air for blow molding, which eliminates any danger of polluting the inside of the bottle. The hollow needle is inserted into the dome at the upper part of the bottle structure in the mold, and then sterile air is blown in to form the designed bottle shape. In the process of blow molding, after the plastic is cooled by the mold, the gas is released, and then the bottle body is sealed by two independently operated mechanisms at the position between the insertion point of the blowing needle and the dome. This sealed area is isolated from the metal part with the cooling channel so that after the gas channel is closed by the sealing mechanism, the plastic in this area still keeps a high temperature and compatibility with the plastic itself. Because sterilization is closely related to the sealing process, two sealing processes are generally used to improve the reliability of sterilization. The reason for using two sealing processes is not the imperfection of one sealing device, but to reduce the risk of any pollution. The sealing process is completed before the bottle body is removed from the mold, thus avoiding the possibility of contamination. Then, the mold is opened, and the bottle body is taken out for trimming. Now the sterile bottles produced can be packaged, stored, shipped or directly sent to the filling process. When sealing the bottle, it is sometimes necessary to reduce the pressure to slightly lower than the normal pressure to ensure that the latent heat of plastic will not cause the deformation of the bottle when the gas is reheated after the bottle is sealed. It should be emphasized that during the whole blow molding process, the inside and outside of the bottle are completely isolated from polluted air, and only sterile compressed air contacts the inside of the bottle. In order to ensure the barrier property of bottles, a multi-layer co-extrusion process is needed. Sterile bottles for liquid dairy products are usually made of 3 or 6 layers of HDPE. TECHNE's multi-layer co-extrusion was originally used to solve the problem of waste leftover materials, mainly to reduce the number of raw materials and recover 10%-30% of the materials in each container, but it was widely used in the manufacture of milk products blow bottles. The inner and outer layers of the three-layer bottle body are white, and the middle layer is black, which plays an anti-ultraviolet role. Without refrigeration, the shelf life of the product is 3 months. The shelf life of products can reach 6-9 months by adding an EVOH barrier layer to 6-layer bottles.
 
How to ensure the sterility of compressed air
Ensuring the sterility of compressed air is a key link. The compressed air can be sterilized by using the precision filter. When compressed air passes through a precision filter, bacteria and yeast can be filtered out. However, when the filter is used for sterilization, the air channel downstream of the filter must also be sterilized. At the same time, in order to meet the hygienic standard of milk production, all the air that comes into contact with the product should have a smooth passage, and at the same time meet other special requirements of product production. That is to say, all compressed air channels must be sterilized and kept sterile during the whole blow molding process. At present, many sterilization methods are complicated and costly. A simple method is to sterilize with the OXONIA active sterilizing agent of Henkel Company. The aseptic bottle and aseptic filling production line produced by this process has been produced and operated in some European milk factories for many years, and the practice has proved that it is safe and reliable.
 ]]> 0 Sun, 25 Sep 2022 20:04:59 +0000 https://www.xbottling.com/news/technical-transformation-of-inlet-blowing-beer-filling-machines.html?utm_source=rss https://www.xbottling.com/news/technical-transformation-of-inlet-blowing-beer-filling-machines.html?utm_source=rss The beer filling machine is the core equipment of the filling line. The quantity and quality of products are closely related to the working state of the wine machine, and it is also the most complicated part that needs to be controlled, adjusted and operated in the filling production process. The wine filling machine is developed around the filling process. The principle of isobaric filling is as follows: the bottle is fed into the bottle feeding screw of the filling machine by the bottle feeding belt, and then sent to the bottle supporting cylinder of the rotary table at a certain distance by the bottle feeding star wheel, and then raised. Under the guidance of the centering device, the bottle mouth presses the blanking opening of the filling valve tightly to form a seal. After the bottle is vacuumed, the back pressure gas (CO2) in the liquid storage tank is flushed into the bottle. When the pressure of the gas in the bottle is equal to that in the liquid storage tank, the liquid valve is opened under the action of the spring. At this time, the beer is automatically poured into the glass bottle along the wall of the bottle through the guiding function of the umbrella-shaped reflecting ring on the air return pipe. The CO2 in the glass bottle is replaced back into the liquid storage tank through the air return pipe. When the liquor rises to a certain height and the air return pipe is closed, the drinking will be stopped automatically. Then, the liquid valve and air valve are closed, and the pressure gas at the bottleneck is discharged to prevent the gassy liquor from gushing when the glass bottle falls, thus completing the whole filling process.
 
Existing problem
The filling machine in our factory adopts a mechanical wine valve for equal pressure filling. Its wine filling principle is divided into six stations as shown in Figure 1. Including 1) pre-vacuuming (orange). 2)CO2 washing (blue). 3) Vacuum again (orange). 4)CO2 standby pressure (blue). 5) Wine filling process (yellow). 6) Pressure relief (dark green).
 



The designed production capacity of this distiller is 36,000 bottles/hour. After 10 years of operation, all the performance indexes have declined, which can't reach the original designed production capacity. In particular, the secondary liquor rate of the produced products increases month by month, and the dissolved oxygen is often unqualified. As can be seen from Figure 1.2, the dissolved oxygen value in the bottle increased month by month in the months after the annual maintenance of the wine machine over the years, which seriously affected the flavor value and brand image of the product. After inspection, it is found that there are independent devices in the structure of the wine valve, such as a CO2 pipe, vacuum pipe and pressure relief exhaust pipe, while the residual foam is left in the inner cavity. After a period of isobaric filling, the residual foam will remain in the inner cavity, resulting in the insufficiency of the next six filling stations, which will further affect the qualified rate of dissolved oxygen and the inferior liquor rate of the product.
 
Transformation method
In order to improve the qualified rate of dissolved oxygen and reduce the inferior liquor rate of products, a set of blowing devices must be designed to solve this technical problem. As shown in Figure 2.1, the blowing device is installed between the outlet and the inlet of the wine filling machine, and its function is to clean up the residual foam in the cavity, so that the wine filling valve can circularly fill wine in a good environment, thus improving the production efficiency of the wine filling machine.
 

Figure 2 Appearance diagram of blowing device

The blowing device comprises two parts: an automatic valve opening part and a forced valve closing part. Fig. 2.2 is the structure diagram of the automatic valve opening component. By modifying the electrical program of PLC, the cylinder action of the automatic valve opening component and the entrance induction valve opening and wine filling action can be started synchronously. When the bottle is filled with wine, the cylinder moves, the wine valve is lifted and opened, CO2 is quickly discharged due to the pressure difference, and the residual foam in the cavity is blown clean; when there is no bottle filled with wine, the cylinder does not move, and the wine valve remains closed, thus reducing the loss of CO2. The automatic valve opening part adopts a separate bracket, which is composed of two bottom plates with four M10 slots. It can be adjusted flexibly, and the height can be adjusted to the best position according to the wear of 108 wine-filling valves in different states. The right-angle bottom plate is equipped with a double-acting cylinder with a fork, the direction of its action is controlled by an electromagnetic valve, and it is controlled by a PLC program to always keep the height of the wine filling action with the wine valve.
Consistent.
 
 
Fig. 3 is the structure diagram of the forced valve closing part, which keeps a distance of about 3 stations from the automatic valve opening part. When the residual foam in the cavity is completely blown clean, the valve must be forced to close after passing through here, so as to ensure that the cavity of the wine valve is closed when the wine filling machine runs to the entrance, and the isobaric filling in the next cycle can be effectively carried out.



The automatic valve closing component adopts a separate bracket, which is composed of two stainless steel plates with two M10 slots. It can be adjusted flexibly, and its height can be adjusted to the best position according to the site conditions. The bending plate is equipped with two adjusting screws equipped with compression springs. After the adjusting screws are placed in proper positions, the spring device is used to automatically adjust the balance, automatically absorb the shock, and finally automatically compensate for the gap of the position error of each wine valve. Because the stability of the fixing ring of the filling machine is not high, and the control mechanism of the wine valve is easy to wear and become loose, the wine valve cannot be closed well. Using the stainless steel guide plate to slowly close the wine valve switch can improve the stability of the whole device and achieve accurate control of the filling valve.
 
Modified effect
 
From the feedback effect, as shown in Figure 3.1, the qualified rate of dissolved oxygen is significantly improved. This design completely meets the design requirements, which not only improves the product quality but also improves the image of the product, greatly reduces the number of short wines and improves the qualified rate of filling. At present, there are two wine filling machines modified by our company, which can save tens of thousands of yuan of liquor cost every year by reducing the liquor rate by 0.5%. By reducing the frequency of failures and shortening the maintenance period of spare parts, the annual spare parts cost can be saved, and the economic benefits generated by reducing the failure rate of equipment are considerable. Many peer manufacturers have the same type of equipment, which can be popularized and applied to the industry.
 

Sampling time	bright beer tank (ug/L)	Average dissolved oxygen in draft beer (ug/L)
20200816	81	100
20200817	82	90
20200822	80	88
20200911	78	84
20200924	62	62
20201008	70	71
20201019	65	60

Figure 3.1 Data Table of Dissolved Oxygen Results
 ]]> 0 Sun, 25 Sep 2022 20:05:19 +0000 https://www.xbottling.com/news/20-l-iron-drum-automatic-filling-machines.html?utm_source=rss https://www.xbottling.com/news/20-l-iron-drum-automatic-filling-machines.html?utm_source=rss In the filling of liquid materials similar to the polyurethane industry in the domestic chemical industry, the semi-automatic simple filling was used in the past, with a low degree of automation and low production efficiency. At the same time, this kind of material will produce crystallization, corrosiveness and toxicity at room temperature, which will cause different degrees of harm to the human body. Some domestic enterprises with economic strength and foreign-funded enterprises gradually need to purchase automatic high-precision and high-speed filling lines. This equipment is developed under the background of the full-automatic filling transformation of polyurethane stock solution in China. In the full-automatic transformation, the automatic filling line is required to meet all the characteristics of the above materials, and the overall filling speed must be 950~1 000 barrels per hour.
 
The design scheme of filling machines
According to the needs of the market and customers, an automatic filling production line of polyurethane sole stock solution for 20 L iron drum packaging was developed. According to the characteristics that materials can't contact with air for a long time and are easy to crystallize at room temperature, firstly, an automatic nitrogen filling device is designed in front of the filling station to ensure that the empty barrel is filled with nitrogen before filling; secondly, the filling head adopts a special double-layer structure design, the inner layer of the filling head is used for filling, and the outer layer is used for flushing nitrogen, so that the filling materials can't contact with the air; All the conveying parts except the end part of the filling head are equipped with an electric heat tracing system to ensure the constant temperature of the materials in the filling process without crystallization; The filling machine adopts a three-station design, namely, an empty barrel waiting station, a filling station and a heavy barrel discharging station, and adopts a servo transverse barrel pushing mechanism to realize the transportation of barrels among the three stations, thus improving the speed and running stability of transverse barrel pushing; Before the filling liquid enters the filling valve, a circular equal distributor is arranged to prevent the production efficiency from being affected due to the inconsistent filling speed of each filling head when filling under pressure; As this material can't stay in the tank for a long time after the production in the blending tank is completed, the filling machine also specially designed the shielding function of the filling head. When one or more filling heads fail to fill, it can be closed, which ensures continuous production when a few filling heads fail, as shown in Figure 1.


1- rack; 2- Filling head; 3- Lifting device of filling head; 4- Separating tank; 5- Metal hose; 6- Material receiving box; 7- Servo transverse barrel pushing device; 8- Empty barrel conveying line; 9- Weighing device; 10- heavy barrel outlet line

Fig.1 Structural diagram of three-station filling machine
 
The filling machine adopts weighing filling mode under the liquid level. In order to improve the filling speed, a three-station design is adopted, namely, an empty barrel waiting station, a filling station and a heavy barrel discharging station, and a servo transverse barrel pushing mechanism are adopted to realize the transportation of barrels among the three stations, and a series of products such as 4-10 filling stations can be developed according to the customer's output requirements. The filling machine mainly includes a frame, an empty barrel conveying device, a weighing device, a heavy barrel conveying device, a servo transverse barrel pushing device, a filling nitrogen charging system, a lifting device and a material electric heat tracing system. A closed cover door is installed outside the filling machine to ensure the cleanliness of the filling area. The filling system of the filling machine includes a liquid separation tank, a fixed seat, six liquid separation pipelines, a two-stage valve cylinder and a filling head. The liquid dispense tank is fixed at that upper end of the frame, the upper end of the six liquid dispense pipelines are communicated with the bottom of the liquid dispensing tank, and the joint of the six liquid dispensing pipelines and the liquid dispensing tank are evenly distributed on the same circumference; The center of the bottom of the liquid separation tank is in an upward convex structure, which ensures that no materials are stored at the bottom of the liquid tank; The lower end of the liquid separation pipeline is connected to the feed inlet of the filling head through a hose and a flow control valve in turn; The filling head adopts a lower-opening double-layer filling valve for filling under the liquid level. A sleeve layer is additionally arranged outside the traditional filling valve, and nitrogen can be filled into the filling head through a nitrogen pipeline. Two-stage valve-opening cylinders are arranged at the top of the filling head, so that the end valve opening has two openings, and the piston rod of the valve-opening cylinder is connected with the valve stem of the filling valve, so as to control the full opening and half opening of the filling valve. The filling speed of the liquid inlet pipeline is greater than the sum of the filling speeds of all filling valves. The electric heat tracing system of the filling machine mainly includes a heat tracing belt, terminal junction box, temperature sensor and temperature control instrument. All pipes through which materials flow are all wound around the heat tracing belt except the filling head. Each filling head is a separate heat tracing circuit, which is converged through the terminal junction box. The temperature sensor detects the actual temperature of the pipeline, and the temperature control instrument controls the on-off of the power supply of the electric heat tracing system circuit according to the comparison between the set temperature and the actual temperature, so as to ensure that the temperature of the material pipeline keeps constant at the set temperature. The lateral barrel pushing device includes a servo motor, ball screw transmission device, lateral barrel pushing frame, barrel suction device and barrel-shaped special mold. As shown in Figure 2.
 
 

1- servo motor; 2- Ball screw rotating mechanism; 3- Servo barrel pushing device frame; 4- barrel suction device; 5- barrel suction cylinder; 6- Barrel-type special mold; 7- Magnetic bucket suction plate; 8- Magnet
Figure 2 Structure of servo transverse barrel pushing device

Fig.2 Structural diagram of servo transverse barrel pushing device
 
The barrel suction device is composed of a cylinder and a barrel suction plate equipped with magnets. Six barrel suction devices are installed at the front end of the horizontal barrel pushing frame, respectively facing six filling scales, and special barrel molds are installed at both ends of the barrel suction device. The magnetic barrel suction plate of the barrel suction device is not in the same plane with the mold in the normal retracted state but is a certain distance behind the mold in the horizontal barrel pushing direction, while the magnetic barrel suction plate of the barrel suction device is in the same plane with the mold in the extended state. The special mold for the barrel is matched with the barrel divider of the empty barrel conveying device to locate the position of the barrel in the direction of entering and leaving the barrel so that six empty barrels can be prepared to move transversely to the center of the weighing platform of the filling station, and at the same time, the barrel mouth is facing the filling head. Driven by a servo motor and ball screw transmission device, the horizontal barrel pushing frame drives the barrel suction device and barrels special mold to move to the empty barrel waiting station, filling station and heavy barrel conveying station, respectively. When the horizontal barrel pushing device moves to the forward direction of horizontal barrel pushing, the barrel suction device first extends out, and when moving to the empty barrel station, six-barrel molds are stuck on both sides of six empty barrels, while the magnetic barrel suction plate of the barrel suction device sucks the barrel side, and when moving forward, Only six empty barrels touch the corresponding filled heavy barrels on six scales in the filling station, driving the heavy barrels to move forward. When the six heavy barrels are moved into the heavy barrel conveying station, the servo transverse barrel pushing device stops moving forward and starts moving backward, so that the heavy barrels are separated from the empty barrels, and the heavy barrels stay in the heavy barrel conveying station and are conveyed out of the filling machine, while the empty barrels continue to move backward driven by the magnetic barrel suction plate of the barrel suction device. When the empty barrels move to the center of the weighing station in the filling station, Stop moving backward. At this time, the magnetic bucket suction plate of the bucket suction device retracts. Under the positioning of the special bucket mold, the empty bucket is separated from the bucket suction device. When the servo transverse bucket pushing device continues to move backward, the empty bucket stays on the weighing platform of the filling station and performs the filling action. Finally, the servo transverse bucket pushing device moves to the initial position. At this time, the empty bucket station can continue to feed the bucket for the next cycle. The complete working process of the filling machine is as follows: First, the empty barrels after nitrogen flushing enter the empty barrel waiting for the station in turn, and the barrels are automatically separated at equal distances by the barrel divider, which respectively corresponds to the center of the filling station scale. The servo barrel pushing device starts to move the empty barrels towards the filling station, and at the same time pushes the heavy barrels that have been filled in the filling station to the heavy barrel discharging station. At this time, the servo barrel pushing device moves backward and pulls the empty barrels back to the center of the filling station scale. At this time, the servo barrel pushing device is separated from the empty barrels. Continue to move back to the original position, and the empty barrel station is ready to feed the barrel in the next beat. When the servo barrel pushing device and the empty barrel are moved back to the filling station, the heavy barrel conveying line starts to output the heavy barrel to the filling machine. When the servo barrel pushing device is separated from the empty barrel and moves back, the filling head is inserted under the drive of the lifting device to start filling, and the filling is divided into two steps, namely, volume and flow. During the filling process, the filling head is controlled to rise gradually to ensure that the liquid level is always filled. At the same time, the outer layer of the filling head is filled with nitrogen to ensure the materials.


Control system design

Hardware design of control system

The control scheme is shown in Figure 3.
 
1. Automatic operation 2. Initialization 3. Three-station empty barrel feeding 4. Filling parameters downloaded to weighing instrument 5. Servo barrel shifting to filling station 6. Filling head inserted down and filling started 7. Real-time weight data of electronic scale read 8. The weighing instrument monitored filling accuracy 9. Filling 10. Filling weight qualified 11. Servo barrel shifting to barrel discharging station 12. End 13. Stop running.

Fig.3 Schematic diagram of the control scheme

The control system uses PLC as the control unit, the touch screen as the man-machine interface, the filling and weighing part is controlled by the weighing instrument, and the weighing instrument communicates with PLC through RS-485 to realize the communication of weight data and control instructions. The position control module of PLC sends the position instruction to the servo driver to realize the control of the three-position servo dialing mechanism. The closed-loop control of the constant temperature heating unit is realized by PLC, temperature control instrument and temperature sensor, and the constant temperature heating control of the filling pipeline is realized.
 
Control system software design
The software design adopts a modular structure design, which is divided according to the functional realization of the production line, mainly including an empty barrel conveying line control program, three-station servo barrel shifting control program, weighing and filling control program, constant temperature heating control program, etc. The overall software flow is shown in Figure 4.


1. Touch screen 2. Constant-temperature heating unit 3. Servo barrel-shifting unit 4. Weighing instrument 5. Electric tracing belt 6. Temperature sensor 7. Temperature control instrument 8. Servo barrel-shifting motor 9. barrel-shifting mechanism 10. barrel-sucking cylinder 11. Weighing sensor

Fig.4 Flow chart of the program
 
After the automatic operation of the system starts, all parameters are initialized first, and the closing value of the large and small flows is downloaded into the weighing instrument at the same time as the empty barrel conveying station starts to feed. The weighing instrument will automatically control the opening and closing of the large and small flow valves according to the received values, and the servo barrel shifting mechanism will push the prepared empty barrels transversely to the filling station to start filling. After the filling is finished, the servo barrel shifting mechanism will push the newly prepared empty barrels together with the filled heavy barrels to the barrel discharging station, and then return the empty barrels to the filling station for the next filling, and the system will be updated.
 
Conclusion
The packaging line absorbs the respective advantages of existing filling machines for chemical products at home and abroad and has the advantages of high precision, high speed, high automation and convenient operation. Mainly has the following advantages:
 
(1) Three-station design of filling machine is adopted, barrel feeding, barrel filling and barrel discharging are carried out in parallel, and the horizontal barrel shifting device is driven by a servo motor, which reduces the filling cycle beat and improves the running speed and stability; It is the same 6-head 20 L filling machine. The filling speed of the traditional linear filling machine is about 600~700 barrels /h, while that of the three-station filling machine is 950~1 000 barrels /h, and the overall running speed is increased by nearly 40%.
 
(2) The filling valve adopts a double-layer design, the inner layer is filled with materials, the outer layer is filled with nitrogen, and the upper surface of the materials is filled with nitrogen at the same time, which solves the problem that the upper liquid surface of the materials contacts with the air during filling, effectively prevents the materials from deteriorating, and provides a good solution for filling the same type of industrial materials that cannot contact with the air, and has a good popularization value.
 
(3) Compared with the traditional vibrating type capping machine, the capping lifting mechanism designed by the automatic capping machine based on the principle that the center of gravity changes when the caps are vertically lifted in front and back is simpler in structure, and the capping speed is greatly improved, which has a high popularization significance. Since the successful research and development, the product runs stably, has been well received by customers, and has a good market prospect. At present, it has been sold to a domestic chemical plant for a total of more than ten sets. The annual output has been greatly increased, the labor cost has been reduced, the use effect is good, the labor productivity has been improved, the labor intensity has been reduced, and it has been well received by customers. At the same time, the product has improved brand awareness and influence in the packaging industry and created considerable economic benefits.
 ]]> 0 Wed, 24 Aug 2022 18:46:57 +0000 https://www.xbottling.com/news/filling-machine-control-system-based-on-rbf-neural-network.html?utm_source=rss https://www.xbottling.com/news/filling-machine-control-system-based-on-rbf-neural-network.html?utm_source=rss With the development of mechanical automation control technology, the intelligent control ability of mechanical equipment is constantly improved. In the design of the liquid filling machine, it is necessary to carry out high-precision quantitative control of the liquid filling machine. Combining the method of high-precision filling control parameter analysis and fuzzy identification, a quantitative control model of a liquid filling machine is established. By optimizing parameter simulation and spatial parameter information fusion configuration, the output stability and quantitative filling control ability of liquid filling machines are improved. The research on the quantitative control methods of high-precision filling of related liquid filling machines has attracted great attention.
 
Therefore, related scholars have studied the quantitative control method of high-precision filling of liquid filling machines, and made some progress. Yang Zhenyu, etc. designed a multi-control point high-speed brick filling machine control system. Aiming at the complex structure of the liquid filling machine, the pressure, liquid level, flow rate and temperature were controlled by multiple control points to realize the full-cycle control of the whole production process. Taking PLC as the control core, the filling machine was controlled by the control mode of upper and lower computers. Li Wenyu et al. [4] designed a full-automatic liquid filling machine control system, which controlled the liquid filling machine fully by PLC technology, controlled the accuracy of weighing instruments by networking, and combined with the AC impedance spectrum feature extraction method, distributed and controlled the dynamic reliability liquid level of the liquid filling machine. The traditional method of high-precision filling quantitative control of liquid filling machines has poor output stability and weak adaptive control ability.
 
Aiming at the above problems, this paper puts forward a high-precision quantitative control method for liquid filling machines based on the RBF neural network. Constructed the constraint parameter model of the liquid filling machine's high-precision filling control. Through the fuzzy parameter constraint method, the high-precision filling of the liquid filling machine was carried out. Combined with the spatial disturbance fusion method, the high-precision filling disturbance and feature analysis of the liquid filling machine was carried out. Through the parameter adaptive identification method, the quantitative analysis of the liquid filling machine's high-precision filling was carried out. The fitting control of the liquid filling machine's high-precision filling was carried out by using the B-spline curve fitting method. Through the adaptive parameter adjustment, the RBF neural network model was constructed, and the quantitative control law of the liquid filling machine's high-precision filling was carried out. Finally, the simulation test analysis shows the superior performance of the proposed method in improving the quantitative control ability of the high-precision filling of liquid filling machines.
 
Parametric model and feature analysis

1. Construction of transfer function of a servo-driven metering cylinder of liquid filling machine
In order to realize the quantitative control of high-precision filling of liquid filling machine based on RBF neural network, the medium attribute of high-precision filling control of the liquid filling machine is analyzed by the method of liquid level characteristic analysis, and the structure model of parameter acquisition system of high-precision filling control of the liquid filling machine is constructed. See Figure 1.
 

Fig.1 Parameter collection system for high-precision filling control of the liquid filling machine
 
According to the collection model shown in Figure 1, analyze the specific pressure value of the bottle mouth of the filling machine in the filling process [7]. The kinematic viscosity coefficient V, solution density and parameter number N of filling fluid are acquired by the acquisition system, and the kinematic viscosity coefficient V', fixed-point coordinates x, y and parameter number N' of filling fluid are output after passing through the system. By analyzing the steady-state situation of pressure sensing parameters of liquid filling machine, the steady-state parameter identification model of filling machine pressure is obtained as follows:
 

Where: s is the control area; V is the control volume; V is the kinematic viscosity coefficient of the fluid; T is time; Is the solution density; X,  Y are fixed-point coordinates of fluid; N is the number of parameters. According to the identification parameter model of high-precision filling pressure control of the liquid filling machine, i, j t is used to represent the residual vector of structural strength distribution information of the liquid filling machine, and the expression of the time interval model for calculating high-precision filling of liquid filling machine is as follows:
 
 

i, j U t represent the parameter identification model of high-precision filling quantitative control of the liquid filling machine, which is described as:
 

 
Where: R is the radius of the quantitative cylinder; H is the distance the piston moves. The distance of piston movement can be obtained by formula (4):
 

Where: f2 is the position instruction of the liquid filling machine; P is the pitch of the liquid filling machine; It is the reduction ratio of the servo motor of the liquid filling machine. According to the number of pulses sent by the liquid filling machine to the servo driver, it can be known that the filling capacity load parameter model is:

Where: f1 is the number of pulses; NM is the electronic gear ratio to the servo motor. According to the structure of the servo-driven metering cylinder, the mathematical expression of the rotation angle of the permanent magnet synchronous motor and the output rotation angle of the ball screw is obtained as follows:

Where: Ks is the torsional stiffness of the ball screw; Js is the moment of inertia of the ball screw; Fs is the viscous damping coefficient of the ball screw; S is the inductance of the stator shaft. The transfer function of a servo-driven metering cylinder of a liquid filling machine is obtained from the above-mentioned processes:
 

Where: is the rotor angular velocity of the servo-driven metering cylinder; X is the displacement of the lifting beam of the liquid filling machine. The transfer function construction of the servo-driven metering cylinder of the liquid filling machine is completed.
 
2. Feature analysis of fuzzy parameters
By analyzing the matching between the emission frequency and the resonance frequency in the resonance stage of the liquid filling machine in the high-precision filling process, and considering the uncertain factors of the mechanical property transmission of the liquid filling machine, it is obtained that under the control of the excitation pulse, the RBF neural network model is adopted, and the weighted iteration function of the corrosion dynamic characteristic distribution in the liquid filling machine is obtained as follows:

Where: *( ) j j N E t, 0≤i≤k 1，0≤ (t)≤ 1 represents the high-precision filling speed parameter of the liquid filling machine. By using multivariate state parameter analysis, the fuzzy constraint term is {Wfinal}, and the characteristic parameters controlled by the liquid filling machine are:

The characteristic distribution of high-precision filling of liquid filling machine is as follows:

Where: is the molecular diffusion volume of groups A and B; Under the same amplitude, the impedance characteristic analysis method is adopted to obtain the liquid level diffusion characteristic matrix R of high-precision filling of liquid filling machine, which is defined as:

The disturbance corrosion behavior of a liquid filling machine driven continuously is characterized by (k), and liquid filling is obtained under the constraint of the viscosity coefficient of the medium. Machine sensitivity enhancement feature distribution:

The collected quantitative control parameters of high-precision filling of the liquid filling machine are characterized, and the steady-state characteristic quantity of quantitative control of the liquid filling machine is obtained. High-precision filling disturbance and feature analysis of liquid filling machine based on spatial disturbance fusion method.
 
Control model optimization
 
1. Optimization and adjustment of control parameters of liquid filling machine
Combining the spatial disturbance fusion method to analyze the disturbance and characteristics of high-precision filling of liquid filling machine, the quantitative analysis of high-precision filling of liquid filling machine is carried out by the method of parameter adaptive identification, and the fitting control of high-precision filling of liquid filling machine is carried out by the method of B-spline curve fitting. By adjusting the adaptive parameters, the amplitude function relation is as follows:

According to the variation law of spatial disturbance fusion coefficient, the fractional adaptive extended Kalman filter method is introduced, and the output linear fractional control parameters are as follows:

Considering the disturbance of the system, the fuzzy state constraint model of adaptive control parameter identification of liquid filling machine is obtained:

Through the method of ultrasonic excitation pulse detection, the steady-state error component of high-precision filling of liquid filling machine is obtained as follows:

When carrying out high-precision filling control and optimization design of the liquid filling machine. The compound prediction model is used to identify the parameters and optimize the control of high-precision filling of liquid filling machines.
 
2. Design of high-precision filling control law for liquid filling machine
Using the method of B-spline curve fitting, the fitting control of high-precision filling of liquid filling machine is carried out, and the connecting rod parameter set of liquid filling machine is obtained. A dynamic parameter constraint model of high-precision filling of liquid filling machine is constructed between coordinate systems i 和 i−1, and the spatial dynamic parameter constraint distribution matrix can be expressed as follows:


 
In the 4×4 homogeneous coordinate system, the equilibrium point constraint characteristic quantity of high-precision filling of liquid filling machine is obtained , and the tracking impulse of a high-precision filling drive of liquid filling machine is σ 7. Considering introducing lumped interference into the liquid level control system, the fuzzy control parameters are as follows:

According to the orderly distribution of the filter, the liquid level sensing result of the high-precision filling of the liquid filling machine is obtained. Build an RBF neural network model, as shown in Figure 2. According to the RBF neural network model shown in Figure 2, the optimal design of quantitative control law for high-precision filling of liquid filling machine is carried out. Under the rigid constraint, the output of high-precision filling drive control of the liquid filling machine is obtained as follows:
 


 

Fig.2 RBF neural network model
 
Equation (19) is equivalent to the dynamic analytical model of the high-precision filling operation of the liquid filling machine. To sum up, the optimal design of quantitative control law for high-precision filling of liquid filling machines is carried out by means of parameter optimization identification and analysis.
 
Simulation analysis
 
1. Quantitative control time delay comparison
 
In order to verify the application performance of the proposed method in high-precision filling quantitative control of the liquid filling machine, a simulation test was carried out. In order to ensure the effectiveness of the experiment, the motors and related parameters of the three methods are completely consistent. The rated power of the motors is 1 kW, the rated torque is 3.14Nꞏm, the maximum torque is 9.55nm, the rated speed is 3000 r/min, and the maximum speed is 4000 r/min.
It is given that the number of nodes in the input layer of the RBF neural network is 14, the number of hidden nodes is 8, the number of nodes in the output layer is 4, and the time delay parameter of the liquid filling machine is 1.56 ms, and the fluctuation amplitude is 15 dB. According to the above parameters, the high-precision control of the liquid filling machine is carried out. Check the control time delay of the multi-control point control method, full-automatic control method and the proposed method. The results are shown in Figure 3. According to the analysis of Figure 3, with the increase in iteration times, the total control delay of each method also increases. When the number of iterations is 200, the sum of quantitative control delay of the multi-control point control method is 168 ms, that of the automatic control method is 256 ms, and that of the proposed method is 6 ms When the number of iterations is 900, the sum of quantitative control delay of multi-control point control method is 335 ms, that of automatic control method is 365 ms, and that of the proposed method is only 28 ms The sum of the quantitative control time delay of the proposed method is obviously lower than that of the other two methods, which indicates that the control efficiency of the method in this paper is higher.
 
 

Fig.3 Comparison of quantitative control delay
 
 
2. Control stability of filling machine
 
In order to further determine the control stability of the filling machine, the multi-control point control method, automatic control method and the proposed method are used to test the filling control stability of the liquid filling machine. The results are shown in Table 1. According to the analysis of Table 1, when the number of iterations is 600, the filling control stability of the multi-control point control method is 84.32%, that of the automatic control method is 82.21%, and that of the proposed method is 96.45%. When the iteration number is 1000, the filling control stability of the multi-control point control method is 81.32%, that of the automatic control method is 75.43%, and that of the proposed method is 98.82%. Compared with other methods, the filling control stability of the proposed method is higher, which indicates that the proposed method effectively improves the liquid level.
Quantitative control ability.
 
3. Filling volume control effect of liquid filling machine
In order to verify the liquid quantitative control ability, check the multi-control point control method, the full-automatic control method and the liquid volume control accuracy of the proposed method, the results will be output by sigmaplot software as shown in Figure 4. The filling capacity of the liquid filling machine is set to 100 mL. Compare the filling accuracy of filling machines under different control methods. According to the analysis of Figure 4, when the number of experiments is 10, the filling capacity of the liquid filling machine with the multi-control point control method is 93.5 mL, which is 6.5 mL different from the set capacity of 100 mL.
 
Tab.1 Stability of filling control

Iterations	Controlling filling stability/%
	Method	Multi-point control method	Fully automatic control method
200	96.45	84.32	82.21
400	95.76	88.61	82.32
600	96.32	80.22	83.40
800	97.21	79.54	79.63
1000	98.82	81.32	75.43

 

Fig.4 Filling volume of the liquid filling machine under different methods
1. Multi-control point control method 2. Fully automatic control method 3. The control method in this paper
 
The filling capacity of the liquid filling machine with the automatic control method is 92.7 mL, which is 7.3 mL different from the set capacity. The filling capacity of the proposed liquid filling machine is 100 mL, and the set capacity difference is 0. When the number of experiments is 50, the filling capacity of the liquid filling machine with the multi-control point control method is 96.3 mL, which is 3.7 mL different from the set capacity of 100 mL. The filling capacity of the liquid filling machine with the automatic control method is 95.2 mL, and the difference from the set capacity is 4.8 mL. The filling capacity of the proposed liquid filling machine is 100 mL, and the set capacity difference is 0. The filling accuracy of the proposed method is much higher than that of other methods, which shows that the quantitative control effect of the proposed method is better.
 
Conclusion
 
The quantitative control model of high-precision filling of liquid filling machine is established by combining the analysis of high-precision filling control parameters and fuzzy identification method. The quantitative control method of high-precision filling of liquid filling machine based on RBF neural network is proposed in this paper. The analysis of pressure sensing characteristics of the liquid filling machine is realized by liquid level parameter identification, and the optimization of high-precision filling quantitative control of the liquid filling machine is completed by parameter optimization identification and analysis method. Through the experiment, the following conclusions are drawn.
 
1. The sum of the quantitative control delay of the proposed method is low. When the number of iterations is 900, the sum of the quantitative control delay of the proposed method is only 28 ms
 
2. The filling control stability of the proposed method is high. When the iteration number is 1000, the filling control stability of the proposed method is as high as 98.82%.
 
3. The filling accuracy of the filling machine of the proposed method is much higher than that of other methods, and the filling quantitative control effect of the filling machine is better. When the number of experiments is 50, the filling capacity of the liquid filling machine of the proposed method is 100 mL, and the set capacity difference is 0.
 ]]> 0 Wed, 24 Aug 2022 17:32:11 +0000 https://www.xbottling.com/news/air-return-pipes-of-beer-filling-machines.html?utm_source=rss https://www.xbottling.com/news/air-return-pipes-of-beer-filling-machines.html?utm_source=rss The filling machine is one of the most important pieces of equipment in beer production, which plays an important role in the wide spread of finished products and beer loss. Aiming at the defects of the return pipe of the filling machine, the aim of reducing beer consumption and improving the competitiveness of enterprises is achieved by improving the structure of the painting pipe, which contributes to both economic and social benefits. 
 
At present, the mainstream beer filling machines are mostly WF technology, that is, isobaric and isobaric filling and the filling time is fixed. For the filling objects with different bottle types and capacities, the filling effect will be very different, and the wine loss will be great. Wherein, the filling process
It usually includes the following steps:

(1) Vacuuming: the bottle and the centering cover are tightly pressed onto the filling valve, and the vacuum valve is pushed open by a fixed stopper. In a short time, the vacuum degree in the bottle can reach 90%.

(2) CO2 filling: by operating the handle of the butterfly valve (roller), the CO2 gas valve is opened for a short time, so that CO2 can be introduced into the bottle from the wine jar; This process is very short, and it will end when the handle of a butterfly valve (roller) is reset; At this time, the pressure in the bottle rises to near atmospheric pressure.

(3) Secondary vacuuming: the first step is repeated, and about 90% vacuum degree is obtained again. As the mixture of the air left after the last vacuuming and CO2 is pumped out this time, only about 1% of the air in the bottle is left after this step.

(4) Secondary CO2 filling: Repeat the second step, because of the CO2 filling, the CO2 concentration in the bottle is very high, and finally, the pressure in the bottle and the pressure in the wine jar reach a balance.

(5) Filling: when the pressure in the wine jar is balanced with that in the bottle, the valve handle of the butterfly valve (roller) lifts the seal of the beer valve with the help of a spring, and the beer liquid flows into the bottle in a thin film shape through the wall of the umbrella-shaped dispersing cap marsh bottle; At the same time, the CO2 gas in the bottle returns to the wine jar through the gas return pipe.

(6) After filling to the specified liquid level, it enters the liquor stabilization stage. Due to the function of the communicating device principle, some residual liquor exists in the gas return device (including the gas return pipe) at this time (the longer the stabilization stage, the more liquor content in the gas return device will be until it reaches the liquid level of the wine tank). After the stabilization, close the beer valve seal to stop filling; The air valve is closed by the movement of the valve handle of the (butterfly valve) roller, and the pressure relief valve installed on the side is pushed open by a fixed block, so that the bottle is communicated with a small throttle nozzle, so that the pressure in the bottle gradually tends to atmospheric pressure due to throttle and exhaust, thus avoiding beer foaming caused by sudden pressure change. However, in the existing filling process, after the filling of the isobaric filling machine is finished, when the flushing valve is opened, the CO2 in the wine tank will blow out the liquor in the return pipe, thus causing great filling.
 
Tracheal structure

In order to overcome the above-mentioned defects in the prior art, on the basis of not changing the equipment parameters and process parameters of the original beer filling valve, the diameter of the filling air return pipe can be adjusted according to the corresponding bottle type, thus effectively preventing the phenomenon such as wine surge, accurately controlling the filling level and reducing the wine consumption, and researching and improving the air return pipe of beer filling machine, as shown in Figure 1.
 
The air return pipe of the filling machine comprises a hollow air return pipe body, and a groove is arranged below the air return pipe body; a conical buffer ring is arranged between the body and the groove, and the conical bottom end of the buffer ring is arranged at the end far away from the groove; The diameter of the bottom end of the buffer cone is larger than the outer diameter of the air return pipe body, and the buffer ring can be suitable for filling various bottle types; The angle between the buffer surface downward and the outer wall of the air return pipe body is 15-45 degrees, and the filling level can be accurately controlled during operation. The top and bottom of the groove are connected with the inner side wall of the air return pipe body, and the bottom of the groove is provided with a plurality of through holes and a hollow pipe, thus preventing the sealing ball from blocking the through holes at the bottom of the groove. The top of the inner tube of the groove is a conical inner tube, the inner wall of the conical inner tube is fixed with a variable diameter bushing which is a cylinder, the inner wall of the conical inner tube is internally twisted, and the outer wall of the variable diameter bushing is provided with a screw thread matched with the inner thread of the conical inner tube, and the port of the variable diameter bushing and the top of the tube body are provided with a welding layer, which can better prevent the phenomenon of wine surge, etc. The lower groove and the air return pipe are provided with wrench positions, which can be directly disassembled from below with a special wrench, which is more convenient to disassemble and improves the working efficiency.
 
The structure has the advantage that the air return pipe can effectively prevent the phenomenon of wine surge on the basis of not changing the equipment parameters and process parameters of the original beer filling valve, and furthermore, the groove is arranged at the bottom of the air return pipe, and a sealing ball which can move flexibly is arranged in the groove so that the bottom of the air return pipe is sealed by the sealing ball under the buoyancy of beer liquor, and the waste of liquor caused by liquor entering the air return pipe is avoided.
 

Figure 1: 10 Air return pipe body, 20 grooves, 30 through holes, 40 sealing balls, 50 pipes, 60 wrench positions and 70 buffer rings.

Comparative experimental data

Taking the 480ml bottle as an example, the experimental comparison of the air return pipes before and after the improvement is made, and other conditions are the same. Table 1 shows that 10 experiments were carried out on the lost beer brewing of the return pipe before the improvement. The total amount of sake received was 2307.00kL, the total amount of finished products stored in the warehouse was 2228.38kL, and the lowest wine loss was 2.99%, the highest was 4.38%, and the average wine loss was 3.41%. Table 2 shows the lost beer of the return pipe after the improvement. Eight experiments were carried out, and the total amount of sake received was 1,916.00 KL. After the improvement, the loss of beer in the return pipe decreased by 1.59 percentage points compared with that before the improvement, and the effect was remarkable.

Table 1 Loss of beer in return pipe before improvement

Times	Bottle type	Sake reception/kL	Finished goods warehousing/kL	Wine damage/%
1st	480ml	162.30	156.76	3.41
2nd	480ml	176.20	170.64	3.16
3rd	480ml	160.80	154.82	3.72
4th	480ml	144.70	139.88	3.33
	480ml	120.60	115.52	4.21
5th	480ml	191.90	185.15	3.52
	480ml	166.20	159.92	3.78
6th	480ml	138.60	134.27	3.13
	480ml	174.50	168.68	3.33
7th	480ml	193.60	187.81	2.99
	480ml	179.60	174.12	3.05
8th	480ml	131.20	125.45	4.38
9th	480ml	190.20	184.25	3.13
10th	480ml	176.60	171.11	3.11
Total		2307.00	2228.38	3.41

Table 2 Loss of beer in return pipe after improvement

Times	Bottle type	Sake reception/kL	Finished goods warehousing/kL	Wine damage/%
1st	480ml	196.00	192.28	1.90
	480ml	193.80	190.60	1.65
2nd	480ml	163.40	160.61	1.71
	480ml	192.30	188.88	1.78
3rd	480ml	207.70	204.46	1.56
4th	480ml	199.80	196.20	1.80
5th	480ml	188.40	184.67	1.98
6th	480ml	174.80	171.46	1.91
7th	480ml	192.80	188.98	1.98
8th	480ml	207.00	204.03	1.92
Total	480ml	1916.00	1881.17	1.82

 
Conclusion
 
Competition in the beer market is fierce, so beer factories need to save energy and reduce consumption to save costs and improve market competitiveness. The reduction of wine loss during beer filling can reduce the cost. Through the research on the improvement of the return pipe of the filling machine, a beer factory with an output of 200,000 kL can reduce the wine loss by about 3000kL every year, bringing considerable economic benefits to the enterprise. At the same time, the discharge of waste wine is reduced, the pressure on the sewage treatment system is reduced, and it also contributes to environmental protection. In short, the reduction of enterprise costs and the improvement of competitiveness involves many factors, and each member of the brewery should contribute his wisdom to the enterprise.
 ]]> 0 Wed, 24 Aug 2022 16:39:15 +0000 https://www.xbottling.com/news/finite-element-analysis-of-can-filling-machine-frame.html?utm_source=rss https://www.xbottling.com/news/finite-element-analysis-of-can-filling-machine-frame.html?utm_source=rss The frame is an important part of the can filling machine, which bears a large load and needs high enough strength and diamond. If the local stress is too high, the structure will be destroyed, and too much deformation will affect the installation accuracy, thus affecting the filling accuracy. In this paper, based on Ansys Workbench, the frame is analyzed by the finite element method. The results show that the maximum stress of the original frame is 71.8MPa, which is less than the yield strength of stainless steel. The maximum deformation is 0.894mm, with large deformation and insufficient rigidity. After optimizing the position and structure of the frame leg, the maximum stress of the frame is reduced to 36.7MPa, which is reduced by 48.8%. The maximum displacement is reduced to 0.279mm, which is 68.8% lower than that before optimization. The strength and stiffness meet the design requirements.
 
The frame of the can filling machine is a permanent part of the filling machine and an important basic supporting part. It is equipped with a transmission system, a filling system, a can conveying system and a protection part. In order to ensure the safety, stability and filling accuracy of the rack, the strength, stiffness and stability of the rack are required. YLGD60 Can Filling Machine developed by Hefei Zhongchen Light Industry Machinery Co., Ltd. is 60-head high-speed equipment. The finite element method is used to analyze the frame, and according to the analysis results, the number, position and part of the structure of the support legs are improved and optimized again, which provides a reference for the structural design of the frame.
 
Structure of can-filling machines
As shown in Figure 1, the filling machine consists of the transmission system, tank conveying system, a filling system, a protective door and a frame. The transmission system provides power for the whole filling machine; The can conveying system is responsible for outputting the filled cans from the filling system; The filling system fills the liquid into the cans according to the set parameters. Comprises a frame bedplate and supporting legs, wherein the bedplate is supported by the supporting legs and is provided with a transmission system, a filling system, a tank conveying system and a protective door.
 

Fig. 1 Structure of can filling machine
1. Filling system 2. Protective door 3. Tank conveying system 4. The transmission system 5. Frame
 
Establish analysis model
Establish the model of the rack in Workbench. In DesignModeler, the establishment surface is the bedplate, which is divided into the connection support surface between the bedplate and each component. The reinforcing ribs and legs on the platform are represented by straight lines according to the positions and sizes in the three-dimensional model. As shown in Figure 2.
 

Figure 2 Rack model
 
Set and analyze parameters
 
1. Parameter setting and grid division
The slab material and reinforcing ribs are 304 stainless steel, and the density is 7.93X103kg/m3, the elastic modulus is 195GPa and Poisson's ratio is 0.3 as defined in the material properties. The material of the leg is Q235, and the density defined in the material property is 7.85X103kg/m3.
The elastic modulus is 210GPa and Poisson's ratio is 0.33. The plate grid adopts a shell unit, with a thickness of 35mm and made of 304 stainless steel; The reinforcing ribs are set as beam units and made of 304 stainless steel; The legs are set as beam units, made of Q235, and the grid sizes are all set to 10mm. After grid division, it is shown in Figure 3. Each beam element and shell element are rigidly connected to coordinate the deformation of the whole model.


Figure 3 Rack Grid
 
2. Boundary conditions
The weight of the filling system is about 3060kg, and the force in the -Z direction is 30,000 N at A; The weight of the two transition wheels is about 35KG, and the force in the -Z direction is applied respectively, which is about 343 N; The weight of the wheel is about 76.8KG, and the force in the -Z direction is about 753.5n; The bottle conveying line weighs about 32Kg, and exerts a force in the -Z direction, about 313.6n; The bottle feeding screw weighs 46Kg and exerts a force in the -Z direction, which is about 450 N; The load at the lifting post of the cam is about 44.9KG, and the force in the -Z direction is about 440N, totally two places; The load at the column of the tank system is about 32kg, and the force in the -Z direction is about 313.6N, totally four places; The turbine box weighs about 200kg, and is suspended under the bedplate by four upright posts, and the four upright posts are respectively loaded with a force of 490N in the -Z direction; Protective devices are installed around the platform, each weight is about 150Kg, and the force in the -Z direction is about 1470N. Full restraint is applied to the legs. After the load and constraint are applied, it is shown in Figure 4.
 

Figure 4 Load and constraint diagram
 
3. Analysis results
Through finite element analysis and calculation, the stress distribution and displacement program of the frame are obtained. It can be seen from Figure 5 that the maximum stress of the frame is 71.8MPa, less than 210MPa, which meets the working requirements of the bedplate. The maximum stress position is shown in the figure. The maximum deformation is 0.894mm, and the position is shown in Figure 6. Due to the 1m-long column installed on the bedplate, the deformation is too large; The deformation at the protective door is obvious, and the supporting strength cannot meet the design requirements.
 

Fig. 5 stress nephogram


Fig. 6 Displacement nephogram
 
Structure optimization
After analysis, the filling system has the largest deformation at the installation place, and the middle three legs are slightly thin, so adjusting the position can't improve the overall stiffness and strength. Add a leg near the position with the maximum deformation and adjust the positions of the other legs; In order to reduce the deformation at the place where the protective device is installed, reinforcing ribs are added around the edge of the bedplate, and the optimized structure has meshed as shown in Figure 7.


Figure 7 Grid diagram after structure optimization
 
Re-apply the constraint and load, and get the displacement nephogram and stress nephogram through analysis and calculation. It can be seen from the figure that the maximum stress is reduced to 36.7MPa, which is 48.8% lower than before. The maximum stress position is shown in Figure 8. The maximum displacement is reduced to 0.279mm, which is 68.8% lower than that before optimization. The maximum position is shown in Figure 9.
 

Fig. 8 optimized stress diagram
 

Fig. 9 optimized displacement diagram
 
Conclusion

After analyzing and optimizing the structure, the stress and deformation are greatly reduced, which meets the design requirements. Subsequent practice shows that the deformation of the frame is obviously reduced, the installation accuracy is improved, and the workload and difficulty of debugging are reduced.
 ]]> 0 Sun, 12 Feb 2023 15:05:06 +0000 https://www.xbottling.com/links/beverage-filling-production-line.html?utm_source=rss https://www.xbottling.com/links/beverage-filling-production-line.html?utm_source=rss 0