An electric pump, a pump driven by electricity. The electric pump is composed of the pump body, the lift pipe, the pump seat, the diving motor (including the cable) and the starting protection device. The pump body is the working part of the submersible pump. It consists of the inlet pipe, the diversion shell, the reverse check valve, the pump shaft and the impeller and other parts. There are two ways to fix the impeller on the shaft.

Positive displacement pump: the movement of working parts causes the working volume to increase and shrink periodically and suck up the liquid, and directly increase the pressure of liquid through the extrusion of working parts. According to the different movement mode of the moving parts, it is divided into two types: reciprocating pump and rotary pump. According to the structure of the moving parts, the piston pump and the plunger pump have the gear pump, the screw pump, the vane pump and the water ring pump.

The impeller pump is composed of a water inlet pipe, a diversion shell, a check valve, a pump shaft and an impeller. The impeller pump drives the liquid to rotate at high speed by the impeller, and transfers the mechanical energy to the liquid transported

Diaphragm pump: the diaphragm pump, also known as the control pump, is the main type of actuator. It controls the output signal of the modulation unit and changes the fluid flow by means of power operation. The diaphragm pump is usually composed of the actuator and the valve. Compressed air is used as a power source, and all kinds of corrosive liquids, granular liquids, high viscosity, volatile, flammable and highly toxic liquids can be exhaustion.