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The pump body impeller and the motor driving the impeller are both submerging into the water to operate a water pump, there are two types of deep well and operation surface.Wells with submersible pumps through the cable into the well to the motor power supply, from the long axis of the drive, compact structure, light weight, easy installation, use and transfer of the power supply area have replaced the trend of long axis deep well pump, but the sediment concentration is not applicable to large Wells and places where no power supply.
Use of submersible pump motor has a dry all seal (motor), half dry type (motor stator seal, and rotor operation) in the water, the oil filled type (motor oil filled inside to prevent moisture intrusion winding) and wet (internal water filling machine, stator and rotor are running in the water) and other types.Three kinds of sealing is required before manufacturing and installation accuracy is higher, so agricultural deep well submersible pumps usually adopt wet type motor, the stator winding adopts water resistant insulated wires or at the end of stator windings and the slot gating synthetic resin, water into the motor internal impact is not big, seal structure can be greatly simplified, requires only sand control.
Some deep-well submersible electric pumps have a lift of up to 1,400 meters and a maximum flow of 1.4 cubic meters per second.