This equipment is mainly used in winterization and fractionation of cotton seed oil and palm oil, it also be used in winterization and dewaxing of sunflower seed oil and maize germ oil. Automatic pull and press the filter plate structure. Through the air diaphragm squeeze of filter cake to the avoid direct contact with air. The diaphragm filter press is an advanced equipment for winterization and fractionation at present, which has the characteristics of high degree of automation, easy unloading cake and low residue oil content of cake.