1. QJ series of submersible pumps for wells are composed of submersible three-phase asynchronous motors and water pumps. The motor is directly connected to the upper pump body, and the upper end of the motor shaft is equipped with a reliable shaft sealing device, which can effectively prevent the exchange between the coolant in the motor and the pumped medium, and ensure the long-term safe and reliable operation of the water pump.
2. The submersible pump is a single-suction multi-stage vertical centrifugal pump; the submersible motor is an oil-filled, water-filled wet type, and a submersible asynchronous motor for vertical wells. The motor and the water pump are directly connected through a barrel coupling.
3. The motor winding is nylon sheathed polyethylene water resistant electromagnetic wire. Fill the motor cavity with clean water.
4. The motor guide bearing adopts water lubricated bearing. The lower part of the motor is equipped with a thrust bearing which can bear the up and down axial force of the water pump. The thrust bearing of the high-lift water pump adopts nickel-containing copper sector blocks, and the imported Phillips slide plate is used for grinding, which bears the up and down axial direction of the water pump. force.
5. The high-lift submersible pump is equipped with an axial load bearing device between the pump and the motor, and the head can be increased to 900m.