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Analysis of factors affecting the filling effect of beer filling machine (Part 2)

3.2 the influence of liquor conveying pressure on the filling effect

beer is transported from the sake tank to the filling machine through a pipeline. Most breweries use the back pressure in the sake tank as the conveying power. Because there is a long pipeline from the sake tank to the filling machine, the pressure of beer when it arrives at the filling machine is often unstable and fluctuates greatly. The liquid level in the liquid storage tank also causes great fluctuations, resulting in the escape of CO in beer, Affect the filling effect of beer. Generally, the incoming wine pressure is 3bar, and the absolute value of pressure fluctuation should be EO c: the conversion end signal should be less than 0.3bar. We can ensure the stability of wine delivery pressure by adding wine delivery pump on the pipeline and adopting frequency conversion control technology. As shown in Figure 2, the analog electrical signal 4-20mA detected by the wine cylinder pressure transmitter that changes with the pressure is input into the PID regulator. The 4-20mA continuous control and regulation signal output by the PID regulator controls the frequency converter, and then the frequency converter controls the speed of the wine delivery pump, so as to achieve the purpose of constant pressure wine supply

3.3 the influence of the pressure of the bottle supporting cylinder on the filling effect in the filling process. The pressure of the bottle supporting cylinder cannot be ignored. If the pressure is too low, the bottle can not be pressed tightly, resulting in poor sealing, which is easy to cause wine leakage and foaming, and the wine is not filled properly; if the pressure is too high, the bottle will vibrate greatly when it falls, which is also easy to cause wine to emerge. There is a certain relationship between the pressure of the bottle supporting cylinder and the wine filling pressure. Generally, when the wine filling pressure is bar, the pressure of the bottle supporting cylinder is 2.5-3bar

3.4 effect of beer temperature on filling effect from Formula 1, it can also be seen that the solubility of CO is inversely proportional to the temperature of beer. Too high wine temperature will cause the escape of CO, which not only reduces the content of CO in beer, but also easy to produce the phenomenon of alcohol. Therefore, the wine temperature should be strictly controlled at 0 ~ 4~c

3.5 influence of filling valve on filling effect at present, the filling equipment of most domestic beer manufacturers adopts mechanical isobaric filling valve. When the sealing rings of vacuum valve and relief valve in the filling valve are worn and the sealing rings in the centering device are damaged, the balance of isobaric filling will be broken, which is easy to cause abnormal filling liquid level; When the return pipe of the filling valve is bent and the umbrella reflection ring on the return pipe is damaged, the normal filling of beer will also be affected. Therefore, for the filling valve, we should improve the processing quality of parts, design a reasonable sealing form, and improve the service life of seals

3.6 the influence of bottleneck air on filling effect filling is an important channel for oxygen intrusion into beer, and it should be tightened in time; Therefore, it is also a tension machine for packaging beer quality, which is mainly composed of electromechanical important links. Because beer contains CO gas, it needs to be pasteurized by a sterilizer after being filled, so the wine in the bottle cannot be filled too full, so as to prevent the temperature of beer from rising and the escaping CO gas from getting enough buffer space during pasteurization, resulting in a sharp rise in the pressure in the bottle. As a member of Bayer materials science and Technology Implementation Committee and the global head of sustainable development; (1 on the left) Dr. Christian Haessler explodes the bottle step by step. Therefore, the full bottle volume of 640ml bottled beer is 670m1. There is a 30ml bottleneck volume. If the 30ml bottleneck space is occupied by air, the oxygen in the air will destroy the beer flavor in the bottle. Therefore, we must try to get rid of the air in the bottleneck. By configuring a high-pressure foaming device in front of the gland, the high-pressure sterile water can excite the beer foam and drive away the bottleneck air, so that the foam in the beer can overflow about LCM from the bottle mouth

after measurement, when the upper part of the bottleneck contains coarser beer foam, the air content of the bottleneck is about 7ml, while when it contains finer foam and rushes out of the bottle mouth, the air content of the bottleneck is about ml. In order to ensure that the bottleneck air of the bottle does not exceed 2M1, the pressure of the high-pressure bubble water should be automatically adjusted. According to the relationship between the bubble water pressure and the filling speed obtained from the test, it is realized through PLC control

3.7 the influence of other factors on the filling effect other factors affecting the filling effect are vacuum degree. When the vacuum degree is low, the amount of oxygen will increase after the completion of beer filling. Too much dissolved oxygen will have a great impact on the taste of beer. Therefore, we generally maintain the vacuum degree at more than 90% through secondary vacuum pumping

4 Conclusion

through the above analysis, we can control and improve the key points of beer filling machine from the perspective of design, so as to provide beer manufacturers with better filling equipment

source: packaging and food machinery Author: shenzhiyong

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