Pump as a general machinery, its versatility. With the evolution of the pump, there have been a variety of pumps, the name of a wide variety of pump books in the name and classification of these pumps are different. Therefore, product applications and promotion cause trouble. In general, according to the principle of drainage can be divided into: 1, vane pump such as: centrifugal pump, mixed flow pump, axial flow pump, swirl pump; 2, volumetric pumps such as: piston pump, gear pump, tappet pump; 3, other types such as: jet pump, water hammer pump. The vane pump according to the structure (shaft position) can be divided into: horizontal and vertical; in accordance with the working position can be divided into: submersible pumps and pumps on the ground. Slurry pumps, mud pumps, sand (sand) pumps and sediment submersible pumps are used in accordance with the function of the water pump named, all belong to the impurity pump.