Centrifugal pump principle Centrifugal pump main over-current components are suction chamber, impeller and pressure chamber. The suction chamber is located in the front of the impeller, its role is to lead the liquid to the impeller, a straight cone, elbow-shaped and spiral three forms. There are three main forms of pressurized water chamber: a spiral pressure water chamber (volute), guide vanes and space guide vanes. In addition, there is an annular pressure water chamber, which is mainly used for pumping suspended solids pumps such as mud pumps and sewage pumps. The impeller is the pump's most important working element and is the heart of the overcurrent component. Impeller by the cover and the middle of the leaves. Centrifugal pump work, first filled with liquid pump, and then start the centrifugal pump, the impeller rapid rotation, impeller blades drive liquid rotation, the rotation of the liquid to rely on inertia to the outer edge of the impeller flow, while the impeller from the suction chamber sucked into the liquid. In this process, the liquid in the impeller flows around the flow vane, and the liquid acts a lift on the vane in the flow around the flow. In turn, the vane acts on the liquid with an equal and opposite force to the lift, , So that the liquid energy and out of the impeller, then the kinetic energy and pressure of liquid are increased. The pressure water chamber is located at the periphery of the impeller. Its function is to collect the liquid flowing out of the impeller and send it to the input port of the pressure pipe or the impeller of the next stage. Before sending the liquid to the pressure line or the next stage impeller, the rotational movement of the liquid flow is canceled and the rotational kinetic energy of the liquid flow is converted into the pressure energy. While reducing the flow rate of the liquid stream to reduce hydraulic losses in the pressure line or to fit the next stage impeller suction port requirements. At the end of the spiral extrusion chamber, a diffuser is also typically fitted to further convert the fluid's function into pressure energy.