According to different pressing methods, filter press can be divided into Jack pressing type, mechanical pressing type and automatic pressing type. In practice, Jack filter press is only suitable for small area filter press because of its high labor intensity and no pressure flashover. Jack filter press is characterized by simple planning, easy operation, no power supply, but when used in a larger area of the filter press, it leaks briefly, so it is generally only used for filter press with a filter area of 1-40 square meters. Mechanical compaction filter press is characterized by easy operation and low labor intensity, suitable for 10-100 square filter press. Automatic Pressure Pressure Pressure Press Filter is characterized by easy operation, low labor intensity and high efficiency. It is suitable for filter presses with large filtration area, generally 4-500 square meters or larger.