I remember that I said that the chamber filter press and the diaphragm filter press are 80% similar in design and manufacture. Except for the structure of the filter chamber, the rest are very similar, such as basically the same. Rack; use the same pressure system, etc. Therefore, the original design of the diaphragm filter was evolved from the chamber filter press. Then, what kind of transformation of the van filter press has become the diaphragm filter press now in use? We will talk about this knowledge today. The box filter press is to add a diaphragm to the position between the filter plate depression and the filter cloth by modifying the filter chamber inside. The chamber filter press becomes today's diaphragm filter. machine. As we all know, the filter press of the van filter press is recessed in the middle of the two sides to make room for fixing the filter cloth and storing the filter cake. However, in some special industries, the filter cake filtered by the chamber filter press It contains a lot of water, so I want to squeeze the filter cake again through the equipment, which is a further reduction of moisture. In order to allow the chamber filter press to perform secondary extrusion on the filter cake in the middle of the filter plate, the design of the filter cloth is limited, so only the filter plate can be modified. The purpose of the modification of the filter plate is to reduce the volume of the filter cake, so the volume of the filter plate or the space occupied must be increased. When the activity is increased or decreased, the filter plate can be considered to be highly powerful. Pressure and repeated use, so a diaphragm is added to the bottom of the filter plate. This diaphragm can expand after the introduction of the introduction (usually air and water). It must be greater than the resistance of the filter cake solids to the filter plate, so that the medium to be passed must be high pressure and not easily compressed. After reducing the introduction, the diaphragm will return to its original volume and properties, thus achieving the purpose of repeated extrusion of the filter press of the diaphragm filter. Therefore, the filter press filter plate is designed in a hollow form, and is connected to the outside through a pipe in the hollow space. In order to ensure that the van filter press meets the expansion introduction of the filter plate, the filter press design is designed to add a pipe to the expansion medium, which is connected to the filter plate through the hose and is designed on both sides of the pipe. An on-off valve that controls the flow in and out of the introduction. Through the above transformation, the chamber filter press basically forms a diaphragm filter press, and the rest can be modified as appropriate. This is the origin of today's diaphragm filter presses.