Detailed Product Description

        QJ/QJR Type submersible pump

1. Performance Parameters

  Discharge capacity: 2~1000 m³/h

  Delivery head : 10 m ~ 1000 m

  Motor power : 0.55 ~  400 Kw

  Rated Voltage : 380/660 V

  Material: Stainless steel/cast iron

2. Main Application

 QJ type Well Electrical Submersible Pump is mainly suitable for using in the farmland irrigation, water supply and sewerage engineering in cities and industrial and mining establishments. QJ(R) Type Geothermal Heat Electrical Submersible Pump is suitable for using in the exploitation of geothermal hot water with its water temperature bellow 100 ^oC and it also has features of heat-proof, antisepsis, combating aging, etc.

3.Type explantion

  e.g. 200 QJ80-72/4

       200: Minimum well diameter  (mm )

       QJ : Well submersible electric pump

        80:  Capacity  (m³/h)

        72:  Lift head   (m)

          4:  Stage number of impeller

4. Structure Explanation

 a). Submersible electric pump is composed of five parts: water pump, motor, water line, waterproof cable and control switch. Water pump belongs to single suction multistage vertical centrifugal pump.

 b). Submersible motor adopts YQS type water-filled wet structure, internal chamber was filled with water for cooling the motor and lubricating the bearing. In the operation, due to the changes of temperature, the pressure of the filled water in the internal chamber also changes, it can be automatically regulated by pressure-regulating unit in the lower part of motor.

 c). For preventing the sand getting into the motor, the sand-preventing unit including sand slinger and skeleton oil-sealed was installed in the upper part of motor, the whole motor was sealed tightly.

 d). There are water injection hole and exhaust hole in the upper part of the motor and discharge hole in the lower part.

 e). There are thrust bearing and thrust collar, mainly for sustaining remnant axial force of pump and the empty weight of motors rotor.

 f). The winding of motor stator adopts water-proof electromagnetic wire with good insulating and water-proof functions and rotor adopts squirrel-cage structure.

 g). When used in the environment where there are large grittiness or corrosive water, it should adopt the submersible pump made from casting stainless steel or copper alloy.