A pump is a machine that transports or pressurizes a liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali, emulsion, suspoemulsion and liquid metal.Using polymer composite materialsDuring the working process of the pump, the water flowing in the pump is affected by the friction with the flow channel and the surface of the pump impeller and the viscosity of the water body. The energy consumed by the pump is mainly used to resist the flow friction and eddy current resistance of the water surface. The energy (head loss) consumed by water in the flow process is used to overcome the internal friction and the friction between the water and the equipment interface. If the surface of the pump and impeller is smooth (this surface is called a hydraulically smooth surface), the surface resistance is small. The energy consumption is small. The polymer composite material is sprayed on the flow surface of the water pump and the impeller to form a hydraulically smooth surface. The surface finish of the ultra-smooth surface coating is 20 times that of polished stainless steel. This extremely smooth surface reduces The stratification of the fluid in the pump is achieved, thereby reducing the turbulent flow inside the pump, reducing the volume loss and hydraulic loss in the pump, and reducing power consumption. The purpose of reducing the loss of water flow resistance is achieved, thereby improving the hydraulic efficiency of the water pump, and at the same time improving the mechanical efficiency and volumetric efficiency to a certain extent. The dense molecular structure of the coating can isolate the contact between air, water and other media and the base material of the pump impeller, and minimize electrochemical corrosion and rust. In addition, the polymer composite material is a polymer, which has chemical corrosion resistance, can improve the corrosion resistance of the pump, and can greatly enhance the pump's ability to resist erosion and corrosion.