With the assistance of the feeding pump, the diaphragm filter press will input the filtered material into the filter chamber of the equipment, and filter cloth in the filter chamber (generally, the filter cloth can only allow liquid and very small solid particles to pass through), and the liquid will be filtered. The filter cloth is permeated out, and the solids are intercepted on the filter cloth, thus completing the function of the general filter press equipment.

The characteristic of the diaphragm filter press is that it can be used for secondary drying and pressing of the filter cake. It makes the filter cloth expand and deform, so as to achieve the effect of secondary pressing of the filter cake and further reduce the moisture.

Further gas is introduced to further reduce the moisture in the filter cake. The high-pressure air passes through the filter cake to separate the capillary water and structural water in the filter cake. This is the blow drying method.
The biggest advantage of the diaphragm filter press is the treatment of the water content of the filter cake. The characteristic of the diaphragm filter press is that in each gap cycle, when the filter cake in the setting reaches the designed weight, when the feeding filtration is stopped, it will not immediately open the filter plate for unloading, but expand the filter plate. , the secondary extrusion of the filter cake is carried out. Diaphragm filter plates include split high-pressure polypropylene filter plates, integrated high-pressure polypropylene membrane filter plates, high-pressure polypropylene membrane filter plates embedded with filter cloth and rubber membrane filter plates.