According to the filling principle, the liquid filling machine can be divided into normal pressure filling machine, pressure filling machine and vacuum filling machine; it can be applied in many industries and used in the wine production process for a long time.
The atmospheric pressure filling machine is filled by liquid weight under atmospheric pressure. This type of filling machine is divided into two types: timed filling and constant filling. It is only suitable for filling low viscosity gas-free liquids such as milk and wine.
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 is filled by the liquid self-weight flowing into the bottle, 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, and the high-speed production line mostly adopts this method. The pressure filling machine is suitable for liquid filling with gas, such as beer, soda, champagne and so on.

The vacuum filling machine is filled under the pressure of the bottle below atmospheric pressure;
The filling machine has the advantages of simple structure, high efficiency, wide adaptability to the viscosity of materials, such as oil, syrup and fruit wine.
The process is generally as follows: the boxes with empty bottles are stacked on the tray, and the conveyor belt is sent to the unloading tray machine, the trays are unloaded one by one, the boxes are sent to the unloading machine with the conveyor belt, and the empty bottles are taken out of the boxes. The empty box is sent to the washing machine via the conveyor belt, cleaned, and then transported to the side of the cartoner to load the bottle containing the beverage. The empty bottle taken out from the unloader is sent to the bottle washer for disinfection and cleaning by another conveyor belt. It is inspected by the bottle inspection machine and enters the filling machine and the capping machine after meeting the cleaning standards. The beverage is filled into the bottle by a filling machine. The bottle with the beverage is sealed by the capping machine and transported to the labeling machine for labeling. After the label is attached, it is sent to the packing machine and then sent to the stacking tray machine and stacked on the tray to be sent to the warehouse.