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2022-01

Various types of water pump knowledge and the meaning and function of water pumps

The impeller of the pump body and the motor driving the impeller are submerged into the water to work. There are two kinds of pumps for deep wells and working surfaces. The submersible electric pump for deep well supplies power to the motor through the cable extending into the well, eliminating the need for a long drive shaft, so it is compact in structure, light in weight, easy to install, use and transfer, and has a tendency to replace the long shaft deep well pump in areas with power supply, but It is not suitable for wells with high sand content and areas without power supply. The motors used in submersible pumps are dry type (the motor is completely sealed), semi-dry type (the stator of the motor is sealed, and the rotor runs in water), oil-filled type (the motor is filled with oil to prevent moisture from entering the winding) and wet type (the inside of the motor water-filled, both the stator and the rotor operate in water) and other types. The first three types all need to be sealed and require high manufacturing and installation accuracy. Therefore, the agricultural deep well submersible electric pump usually adopts a wet motor, and its stator winding uses water-resistant insulated wires or pours synthetic resin at the end of the stator winding and in the slot. Small, the sealing structure can be greatly simplified, only sand control is required. Some deep well submersible electric pumps have a lift of up to 1400 meters and a maximum flow of 1.4 m3/s.

2022-01-10

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