There are many kinds of pumps, which can be divided into:①power pump, also called impeller pump or vane pump, relying on the dynamic force of the rotating impeller to transfer liquid to the liquid continuously, so that the kinetic energy of the liquid ( Mainly) and pressure energy increase, and then the kinetic energy is converted into pressure energy through the extrusion chamber, and can be divided into a centrifugal pump, an axial flow pump, a partial flow pump and a vortex pump.
②Positive displacement pump, according to the periodic change of the volume of the sealed working space containing liquid, the energy is periodically transmitted to the liquid, so that the pressure of the liquid is increased to forcibly discharge the liquid, and can be divided into a reciprocating pump according to the movement form of the working element and rotary pump.
③other types of pumps that deliver energy in other forms. For example, the jet pump relies on the high-speed injection of the working fluid to draw the fluid to be pumped into the pump and mix it for momentum exchange to transfer energy; the water hammer pump uses part of the water in the flow when the brake is lifted to a certain height to transfer energy; the electromagnetic pump is the energized liquid metal flows under the action of electromagnetic force to achieve transportation. In addition, the pump can also be classified according to the nature of the liquid to be transported, the driving method, the structure, the use, and the like.