Before the pump starts, the pump and the inlet pipe are filled with water. After the pump is running, under the centrifugal force generated by the high-speed rotation of the impeller, the water in the impeller flow channel is pushed to the periphery, pressed into the volute, and the impeller inlet forms a vacuum. The water in the pool is filled in along the suction pipe under external atmospheric pressure to supplement this space. The water that is inhaled is then pumped out of the volute by the impeller into the outlet pipe. It can be seen that if the centrifugal pump impeller rotates continuously, it can continuously absorb water and press water, and the water can be continuously raised from a low point to a high place or a distant place. In summary, the centrifugal pump is called a centrifugal pump because the centrifugal force generated by the high-speed rotation of the impeller raises the water to a high position.
During the operation of the pump, the water flowing in the pump is affected by the friction with the surface of the runner and 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) that water consumes during the flow is used to overcome the friction between the internal friction and the interface between the water and the equipment. If the surface of the pump and impeller is smooth (this surface is called a hydraulic smooth surface), the surface resistance is small. The energy consumption is small, and the polymer composite material is sprayed on the flow surface of the pump and the impeller to form a hydraulic smooth surface. The surface smoothness of the ultra-smooth surface coating is 20 times that of the polished stainless steel, and the extremely smooth surface is reduced. The stratification of the fluid in the pump reduces turbulence inside the pump, reduces volume loss and hydraulic loss in the pump, and reduces 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 compactness of the molecular structure of the coating can isolate the contact between air, water and other media and the pump impeller base material, minimizing electrochemical corrosion and corrosion. In addition, the polymer composite material is a high molecular polymer, which is chemically resistant, can improve the corrosion resistance of the pump, and can greatly enhance the pump's resistance to erosion and corrosion.