Characteristics of QJ submersible electric pump for wells Applicable scope of submersible electric pump for wells

Description :

　　The QJ type submersible electric pump for wells 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 water supply for humans and animals in high-altitude mountainous areas, and can also be used for drainage in cities, factories, railways, mines, and construction sites.

　　Characteristics of QJ submersible electric pump products for wells

　　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 lifting pipes (i.e. steel pipe wells, ash pipe wells, soil wells, etc. can all be used; under pressure permission, steel pipes, rubber hoses, plastic pipes, etc. can all 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.

　　QJ submersible electric pump usage conditions

　　The QJ type submersible pump for wells can operate continuously under the following conditions:

　　A three-phase AC power supply with a rated frequency of 50HZ and a rated voltage of 380 ± 5% V.

　　2. The inlet of the water pump must be below 1 meter of the dynamic water level, but the diving depth must not exceed 70 meters below the static water level. The distance between the lower end of the motor and the bottom water of the well should be less than 1 meter.

　　3. The water temperature should generally not exceed 20 ℃

　　4. Water quality requirements:

　　(1) The sand content in the water shall not exceed 0.01% by weight;

　　(2) The pH value is in the range of 6.5~8.5;

　　(3) The chloride ion content shall not exceed 400 milligrams per liter.

　　5. It is required that the well is aligned, the well wall is smooth, and there should be no staggered well pipes.

　　Working principle of submersible electric pump for QJ well

　　Before starting the pump, the suction pipe and pump must be filled with liquid. After turning on the pump, the impeller rotates at high speed, and the liquid inside rotates together with the blades. Under the action of centrifugal force, it flies away from the impeller and is ejected outward. The ejected liquid gradually slows down in the diffusion chamber of the pump casing, increases in pressure, and then flows out from the pump outlet and discharge pipe. At this time, a vacuum low-pressure zone is formed at the center of the blade due to the liquid being thrown towards the surroundings, which has neither air nor liquid. The liquid in the liquid pool flows into the pump through the suction pipe under the action of atmospheric pressure on the pool surface. The liquid is continuously sucked up from the liquid pool and continuously flows out from the discharge pipe.

　　Scope of Supply for QJ Submersible Electric Pump Set

　　1. Host: submersible pump and submersible motor.

　　2. Pipeline: water pipes, bends, rubber pads, installation clamps, etc.

　　3. Cable: Materials for cables and cable joints.

　　4. Starting and protective devices.

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• Submersible electric pump for QJ well