From the packaging perspective of the Fruit Juice Production Line materials can be divided into liquid filling machine, paste filling machine, powder filling machine, particle filling machine, etc.; from the degree of automation of production is divided into semi-automatic filling machine and automatic irrigation Loading production line; from the filling material containing gas or not can be divided into equal pressure filling machine, atmospheric pressure filling machine and vacuum filling machine.

(1) Isobaric filling machine

The isostatic filling machine generally maintains a certain filling pressure in the storage tank. When the container to be filled enters the filling machine, the container is first inflated. The gas may be compressed air or carbon dioxide gas. it is good. When the pressure in the container and the pressure in the storage tank are the same, the self-weight of the liquid is filled through the open filling valve. During the filling process, the gas in the container is smoothly exported and returned to the storage tank or to the gas chamber. In the filling of soda, small champagne and beer, most of them are filled with equal pressure, the process is as follows:

(1) Initial position The bottle has not touched the filling valve and all gas and liquid passages are closed.

(2) Inflation pressure The bottle and the filling valve cover are raised together to a predetermined position, at which time the rotary fork opens the inflation valve, and the pressurized gas enters the bottle from the annular storage tank through the inflation passage.

(3) Injecting and returning air When the pressure in the bottle reaches the pressure of the storage tank, the liquid valve is automatically opened, and the liquid must flow down the bottle wall by the diverting umbrella. At the same time, the pressurized gas displaced in the bottle is returned through the return pipe. In the liquid cylinder, when the liquid level in the bottle reaches the lower port of the return pipe, the liquid injection ends.

(4) Valve closing The rotary fork closes the pressure gas valve and the liquid valve.

(5) Inflating The top carbon dioxide valve is opened, and carbon dioxide or other inert gas is charged into the bottle from the annular groove to drive off the air at the bottle neck.

(6) Pressure release The pressure relief valve is opened and the pressure in the bottle escapes to the annular groove through the needle valve in the pressure release passage.

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