Juices and tea beverages are usually processed by high-temperature hot filling and cold aseptic filling. Due to many conditions, domestic companies generally adopt the former. The process requirements for making juices and tea beverages are strict. From the comprehensive comparison of the PET bottle filling technology, the operability of the Production Line, and the quality of drinks, the use of hot filling technology is more economical and reliable. Hot filling requires juices and tea beverages to be maintained at a constant value between 85°C and 95°C after being ultra-high temperature sterilized by UHT, and the filling is completed within a very short time, which is a high-temperature filling. General carbonated air-bearing beverages, filling more than a positioning type or quantitative type, the material is always a certain distance from the bottle mouth. Fruit juices and tea drinks, especially raw beverages, require raw materials to be filled, that is, they are filled until they are full, so that there is very little residual air in the bottle, which ensures that the beverage itself is not easily oxidized, which can make the beverage long-term. Maintain its quality. Since hot filling requires high-temperature filling and full-filling functions, it requires an automatic circulation system to facilitate low-temperature material circulation heating and CIP cycle cleaning. Hot filling should have the following features.
Bottle filling and delivery. When the heat-resistant PET bottle is filled at high temperature, the biaxially stretched PET heating will shrink, the shrinkage rate is generally 1% to 3%, and the bottle neck part has the highest strength, which requires the bottle neck positioning method to be most reasonable when filling, and avoids The bottle is deformed by external force. At the same time, the filling of well-done beverages is carried out with the use of bottle and bottle mouths, which can prevent the bottle body from being exposed to vibration and overflow of the extruded material.
Full mouth filling. At present, there are two types of filling methods commonly used in domestic hot filling machines. One is similar to the Italian TECH-ITAL company and PROCOMAC company. The inlet and return channels of the filling valve are opened and closed step by step; The class is a model similar to that of a Taiwan company. The inlet and return passages of the filling valve are opened and closed simultaneously. Based on the full digestion and absorption of foreign technologies, we have taken great efforts to develop and design unique filling valves for hot filling machines. There are two filling ports for the filling valve material, in the lowest part of the valve core, so that the head of the valve core occupies little space in the bottle mouth. When filling, the filling valve is inserted into the interior of the bottle mouth, and when filling is finished, due to irrigation The inlet and return channels of the valve are closed in steps and in turn. The valve exits the bottle mouth, and the occupied volume of the valve is supplemented by the beverage in the return channel. This ensures that the beverage fills the entire bottle, ie, full mouth irrigation. Equipment. Similarly, our filling valve ports need to reduce the adjustment of seals and also achieve level filling.
Backflow control function. The material filling port of the hot filling machine designed and manufactured by Hefei Light Industry Machinery Plant is at the lowest part of the valve core. The exhaust passage is the return flow channel outside the valve core. The exhaust and the liquid feed each other. When filling, the bottle The discharge of internal air does not obstruct the flow rate of the material, and the uniformity of the filling of each valve due to exhaust gas is avoided. This not only ensures that no material flows back during pouring, but also easily controls the back flow of the material after filling the bottle.
Automatic circulation function. According to the requirements of the production technology of hot-filled drinks, before and after the start of the hot-filling machine, or when the stoppage of the hot-filling machine causes the temperature of the beverage in the material tank to decrease, it is necessary to warm it, and the refilled beverage can be refilled when the set temperature is obtained. On the other hand, the juice After the continuous production of tea beverages or tea beverages for a period of time, or during the exchange of shifts, it is necessary to cycle the filling material channels. Therefore, the hot filling machine should have a perfect automatic circulation system. Hefei Zhongchen Light Industry Machinery Co., Ltd. hot filling machine has a complete circulatory system: material by the filling cylinder - filling valve - container - return channel - back feed cylinder - low cylinder - pump - Cooler - UHT balance tank.
When the temperature of the filling cylinder of the filling machine is lower than the filling set temperature, it is performed along the above circulation system; when the incoming material is lower than the setting value of the filling temperature, the three-way electromagnetic valve automatically reverses and the incoming material is directly cooled After returning to the UHT balance tank, it is re-sterilized and the set temperature is filled.
In recent years, the development of fruit juices and tea beverages has been rapid, and it has almost doubled each year. In addition to beverage manufacturers have launched hot filling projects, other industries are rushing forward, hoping to share a piece of cake. So almost surging, regardless of whether they have the conditions, the manufacturers of this equipment emerged at night a dozen to come. Although the appearance is good, the price is very low, but some technical details still have unsatisfactory place. Through the extensive use of users, it is considered that hot-filling equipment, with the exception of the above basic functional requirements, possesses multi-faceted capabilities and experience.
Filling valve stability. Select high-quality stainless steel, should fully consider its different functions and working conditions, according to the type of material, chemical composition, mechanical properties of the difference, a reasonable selection of materials, and then the necessary processing, CNC machining, to ensure optimal tolerance, quality control Point check, in order to meet the long-term high temperature, the performance of the filling valve lasting stability.
Filling valve leakage problem. The key is the selection of seals and guides in filling valves. The influence of thermal deformation of this type of material at high temperatures should be taken into consideration. When designing, the heat resistance, hardness and fit size should have empirical data, and the appropriate spring should be selected. In combination with the seal, this problem is solved.
Scaling problem with material channels. Filling cylinders, returning cylinders, and small-diameter pipelines and other components, in the production of stamping, welding and surface treatment, must have advanced and mature technological measures and necessary special equipment to ensure that it can be truly unsanitary, easy to do The CIP operation cleans the exposed parts of the beverage without fouling; In the production and debugging of the equipment, it is necessary to ensure the smoothness of the conveying of the bottle and bottle mouth, the smoothness of the capping system, and then it is difficult to produce mildew by the jetting before the capping; in the aspect of the disinfection and flushing of the empty bottle, the company uses double The channels are sequentially sterilized and rinsed. After analogy and reasonable calculations and experiments, there are enough flushing and draining times to ensure a flushing rate of 100%. When filling the heat-resistant PET bottles, the control system of the filling machine should be equipped with corresponding The procedure will not be subject to static pressure and rounding; bottle cap sterilization, according to different circumstances, decided to choose ozone, ultraviolet sterilization or disinfectant immersion sterilization; in the user's use of the stage, the production of CIP cleaning is also very Importantly, through extensive use, the use of commonly used mechanical cleaning, SIP cleaning combined with the reverse cleaning of the circulatory system is used, and the cleaning solution has a relative and turbulent state at the interface between the pipeline and the container to obtain a good cleaning effect; Finally, it is the management and technical support of the equipment manufacturers. The use of suitable bottles and lids plays a decisive role in producing high-quality, high-grade beverages.
Bottle filling and delivery. When the heat-resistant PET bottle is filled at high temperature, the biaxially stretched PET heating will shrink, the shrinkage rate is generally 1% to 3%, and the bottle neck part has the highest strength, which requires the bottle neck positioning method to be most reasonable when filling, and avoids The bottle is deformed by external force. At the same time, the filling of well-done beverages is carried out with the use of bottle and bottle mouths, which can prevent the bottle body from being exposed to vibration and overflow of the extruded material.
Full mouth filling. At present, there are two types of filling methods commonly used in domestic hot filling machines. One is similar to the Italian TECH-ITAL company and PROCOMAC company. The inlet and return channels of the filling valve are opened and closed step by step; The class is a model similar to that of a Taiwan company. The inlet and return passages of the filling valve are opened and closed simultaneously. Based on the full digestion and absorption of foreign technologies, we have taken great efforts to develop and design unique filling valves for hot filling machines. There are two filling ports for the filling valve material, in the lowest part of the valve core, so that the head of the valve core occupies little space in the bottle mouth. When filling, the filling valve is inserted into the interior of the bottle mouth, and when filling is finished, due to irrigation The inlet and return channels of the valve are closed in steps and in turn. The valve exits the bottle mouth, and the occupied volume of the valve is supplemented by the beverage in the return channel. This ensures that the beverage fills the entire bottle, ie, full mouth irrigation. Equipment. Similarly, our filling valve ports need to reduce the adjustment of seals and also achieve level filling.
Backflow control function. The material filling port of the hot filling machine designed and manufactured by Hefei Light Industry Machinery Plant is at the lowest part of the valve core. The exhaust passage is the return flow channel outside the valve core. The exhaust and the liquid feed each other. When filling, the bottle The discharge of internal air does not obstruct the flow rate of the material, and the uniformity of the filling of each valve due to exhaust gas is avoided. This not only ensures that no material flows back during pouring, but also easily controls the back flow of the material after filling the bottle.
Automatic circulation function. According to the requirements of the production technology of hot-filled drinks, before and after the start of the hot-filling machine, or when the stoppage of the hot-filling machine causes the temperature of the beverage in the material tank to decrease, it is necessary to warm it, and the refilled beverage can be refilled when the set temperature is obtained. On the other hand, the juice After the continuous production of tea beverages or tea beverages for a period of time, or during the exchange of shifts, it is necessary to cycle the filling material channels. Therefore, the hot filling machine should have a perfect automatic circulation system. Hefei Zhongchen Light Industry Machinery Co., Ltd. hot filling machine has a complete circulatory system: material by the filling cylinder - filling valve - container - return channel - back feed cylinder - low cylinder - pump - Cooler - UHT balance tank.
When the temperature of the filling cylinder of the filling machine is lower than the filling set temperature, it is performed along the above circulation system; when the incoming material is lower than the setting value of the filling temperature, the three-way electromagnetic valve automatically reverses and the incoming material is directly cooled After returning to the UHT balance tank, it is re-sterilized and the set temperature is filled.
In recent years, the development of fruit juices and tea beverages has been rapid, and it has almost doubled each year. In addition to beverage manufacturers have launched hot filling projects, other industries are rushing forward, hoping to share a piece of cake. So almost surging, regardless of whether they have the conditions, the manufacturers of this equipment emerged at night a dozen to come. Although the appearance is good, the price is very low, but some technical details still have unsatisfactory place. Through the extensive use of users, it is considered that hot-filling equipment, with the exception of the above basic functional requirements, possesses multi-faceted capabilities and experience.
Filling valve stability. Select high-quality stainless steel, should fully consider its different functions and working conditions, according to the type of material, chemical composition, mechanical properties of the difference, a reasonable selection of materials, and then the necessary processing, CNC machining, to ensure optimal tolerance, quality control Point check, in order to meet the long-term high temperature, the performance of the filling valve lasting stability.
Filling valve leakage problem. The key is the selection of seals and guides in filling valves. The influence of thermal deformation of this type of material at high temperatures should be taken into consideration. When designing, the heat resistance, hardness and fit size should have empirical data, and the appropriate spring should be selected. In combination with the seal, this problem is solved.
Scaling problem with material channels. Filling cylinders, returning cylinders, and small-diameter pipelines and other components, in the production of stamping, welding and surface treatment, must have advanced and mature technological measures and necessary special equipment to ensure that it can be truly unsanitary, easy to do The CIP operation cleans the exposed parts of the beverage without fouling; In the production and debugging of the equipment, it is necessary to ensure the smoothness of the conveying of the bottle and bottle mouth, the smoothness of the capping system, and then it is difficult to produce mildew by the jetting before the capping; in the aspect of the disinfection and flushing of the empty bottle, the company uses double The channels are sequentially sterilized and rinsed. After analogy and reasonable calculations and experiments, there are enough flushing and draining times to ensure a flushing rate of 100%. When filling the heat-resistant PET bottles, the control system of the filling machine should be equipped with corresponding The procedure will not be subject to static pressure and rounding; bottle cap sterilization, according to different circumstances, decided to choose ozone, ultraviolet sterilization or disinfectant immersion sterilization; in the user's use of the stage, the production of CIP cleaning is also very Importantly, through extensive use, the use of commonly used mechanical cleaning, SIP cleaning combined with the reverse cleaning of the circulatory system is used, and the cleaning solution has a relative and turbulent state at the interface between the pipeline and the container to obtain a good cleaning effect; Finally, it is the management and technical support of the equipment manufacturers. The use of suitable bottles and lids plays a decisive role in producing high-quality, high-grade beverages.
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