QJ series vertical submersible pump

1. The submersible electric pump apparatus consists of water pump,motor, water transport pipeline,water-proof cable and control switch five parts, the water pump is a single-suction multiple stage vertical centrifugal pump.

2. The submersible motor uses a water-filling wet-type structure and inside of it there is full of pure water, used for cooling the motor and lubricating the bearing. The pressure adjuster in the lower side of the motor will automatically adjust the water filling pressure inside of the motor when a  variation occurs with it due to the temperature variation during running.

3. To prevent sand and mud from going into the motor, a sand  thrower and a frame oil seal are mounted on the upper side of it to form a sand preventing mechanism and get it a sealed structure.

4. On the upper side there are water filing and exhaust holes and on  the lower side there is drainage hole.

5. On the lower side of the motor  a thrust bearing and a thrust disc are set, used to bearthe pump's residual axial force and the motor rotor's weight.

6.Water-proof electromagnetic wires are used for the stator winding of the motor and of a good insulation and water resisting performance. The rotor is of the squirrel-cage structure.