The pump has small volume, compact structure, splash lubrication or forced lubrication at the power end, low temperature rise at the power end, and is suitable for long time continuous operation. Can pump water, emulsion and other liquids. In various industries of water jet cleaning, chemical plants, sugar plants, power plants and other condensers, heat exchangers, evaporation tanks, boilers and other types of tank descaling cleaning, desulphurization, spunspunned non-woven fabric, ship cleaning, water atomization powder, steel dephosphorization, liquid transport, filter press and other aspects are widely used.