DBY electric diaphragm pump is suitable for all kinds of highly toxic, flammable, volatile liquid, all kinds of strong acid, strong alkali, strong corrosive media. It can transport particles up to 10mm in diameter, and has little wear to the pump when pumping mud and impurities. No need for irrigation, suction up to 7m, lift up to 50m. Through good performance, it can transport some medium that is not easy to flow, and has many advantages of self-priming pump, submersible pump, shield pump, mud pump and impurity pump. There are no rotating parts and no shaft seal diaphragm to completely separate the pumping medium from the moving parts of the pump and the working medium, and the conveyed medium will not leak outwards.