GST automatic liquid filling machine manufacturers found that many people doubt that during the filling process, the gas in the container is discharged from the entry of the beverage, and the pressure does not change. How can it be filled all the time?

　　According to the filling principle, the bottle filling machine can be divided into atmospheric filling machine, pressure filling machine and vacuum filling machine.

　　The atmospheric pressure filling machine is filled by the gravity flow of the liquid itself under atmospheric pressure.

　　The pressure filling machine is filled at a pressure higher than atmospheric pressure, and can also be divided into two types: one is that the pressure in the liquid storage tank is equal to the pressure in the bottle, and the filling is performed by the liquid flowing into the bottle by its own weight, which is called Isobaric filling; the other is that the pressure in the liquid storage tank is higher than the pressure in the bottle, and the liquid flows into the bottle by the pressure difference. This method is mostly used in high-speed production lines. The pressure filling machine is suitable for filling liquids containing gas, such as beer, soft drinks, champagne, carbonated drinks, soda water, etc.

　　The vacuum filling machine is filled when the pressure in the bottle is lower than the atmospheric pressure; this filling machine is simple in structure, high in efficiency, and has a wide range of adaptability to the viscosity of materials, such as oil, syrup, fruit wine, etc. Be applicable.

　　The doubts raised above are about isobaric filling. Generally, isobaric filling is required, because when this liquid is filled, it is easy to foam. For liquids that are easy to foam, if the filling accuracy is inaccurate under normal pressure filling, after the liquid is stationary, the foam on the top disappears, or the foam overflows during filling.

　　In fact, isobaric filling means that before filling, we inject the corresponding air pressure into the container, and then fill it, which is a two-step process.