QJ type submersible deep well pump

Product Introduction

QJ type submersible electric pump for wells（ http://www.pumpzc .. Com/qj-2/) is a water lifting equipment that is directly connected to a motor and a water pump and works underwater. It is suitable for extracting groundwater from deep wells and can also be used for water lifting projects such as rivers, reservoirs, and canals. It is mainly used for irrigation of farmland and human and animal water in high-altitude mountainous areas, and can also be used for water supply and drainage in cities, factories, railways, mines, and construction sites.

Product advantages

1. The motor and water pump are integrated for safe and reliable operation when submerged in water.
2. There are no special requirements for well pipes and water lifting pipes (i.e. steel pipe wells, ash pipe wells, soil wells, etc. can all be used; under pressure permission, steel pipes, rubber hoses, etc.)plasticPipes can be used as lifting pipes.
3. Easy to install, use, and maintain, with a small footprint and no need to build a pump room.
4. Simple structure and material saving. The suitability of the operating conditions and proper management of submersible electric pumps are directly related to their service life.

Selection range

performance parametersThis data is for reference only, please refer to the actual order!

structural drawings

Structure Description 1. The QJ submersible electric pump unit consists of four main parts: water pump, submersible motor (including cables), water supply pipe, and control switch. The submersible pump is a single suction multi-stage vertical centrifugal pump: the submersible motor is a closed water filled wet, vertical three-phase squirrel cage asynchronous motor, and the motor and water pump are connected through claw or middle Direct key cylinder coupling; Equipped with three core cables of different specifications: the starting equipment consists of air switches and self coupling pressure reducing starters of different capacity levels, the water supply pipe is made of steel pipes of different diameters, connected by flanges, and the high head electric pump is controlled by gate valves. 2. Each stage of the submersible pump is equipped with a guide shellrubberBearing; The impeller is fixed on the pump shaft with a conical sleeve: the guide housing is integrated with grooves or bolts. 3. The upper part of the high lift submersible pump is equipped with a check valve to prevent damage to the unit caused by water hammer during shutdown. 4. The upper part of the submersible motor shaft is equipped with a labyrinth sand inhibitor and two reverse assembled skeleton oil seals to prevent sand from entering the motor. 5. The submersible motor adopts water lubricated bearings, and the lower part is equipped with rubber pressure regulating film and pressure regulating spring, forming a pressure regulating chamber to regulate pressure changes caused by temperature; The motor winding adopts polyethylene insulation and nylon sheath water-resistant electromagnetic wire. The cable connection method follows the QJ type cable joint process. The insulation of the joint is removed and the paint layer is scraped off. They are connected separately, welded firmly, and wrapped with raw rubber. Wrap 2-3 layers of waterproof adhesive tape, then wrap 2-3 layers of waterproof tape on the outside or use water glue to bond and wrap a layer of rubber tape (bicycle tire) to prevent water leakage. 6. The motor is sealed with precision stop screws, and the cable outlet is sealed with rubber. 7. There is a water injection hole and a discharge hole at the upper end of the motor. 8. The lower part of the motor is equipped with an upper thrust bearing, which has grooves for dry cooling and is paired with a stainless steel thrust plate to support the axial force of the water pump.