QJ Type Submersible Pump for Wells

One,QJ Series Submersible Pump for Well (Deep Well Pump) Product Overview:

The QJ type submersible pump is a water lifting equipment where the motor and pump are directly connected and submerged in water for operation. It is suitable for extracting groundwater from deep wells, as well as for water lifting projects in rivers, reservoirs, canals, etc.: mainly used for agricultural irrigation and the water supply for humans and livestock in highland and mountainous areas, and also available for urban, industrial, railway, mining, and construction site drainage and water supply needs.

Firefighting Submersible Pump AnhuiQJ Type Submersible Pump for Well - Stainless Steel Multi-Stage High-Pressure Submersible Pump for Deep Well, Features:

Motor and pump integrated, submersible in water operation, safe and reliable.

2. No special requirements for well pipes and lifting pipes (i.e., steel well pipes, cement well pipes, earthen well pipes, etc. are all acceptable; steel pipes, rubber hoses, plastic pipes, etc. can be used as lifting pipes under permitted pressure).

3. Easy installation, operation, and maintenance; requires minimal space and no need for a pump house.

4. Simple structure, material-saving.

The suitability of conditions for submersible pumps and proper management are directly related to their service life.

Firefighting Submersible Pump AnhuiQJ Type Submersible Pump for Well, Stainless Steel Multi-Stage High-Pressure Submersible Pump, Deep Well Pump

FourQJ type submersible pump (deep well pump) application conditions:

The QJ type submersible pump for wells can be continuously operated 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 pump's inlet must be below the dynamic water level at 1 meter, but the submersion depth should not exceed 70 meters below the static water level; the lower end of the motor should be a certain distance from the bottom of the well.0Please provide the Chinese content you would like translated into American English.Over 1 meter.

3. Water temperature should generally not exceed 20°C.

4. Water Quality Requirements: (1) Sand content in water not to exceed 0.01% (by weight).

(2) pH range of 6.5~8.5

(3) Chloride ion content not exceeding 400 milligrams per liter.

5. The well should be plumb, with smooth walls; no misalignment of well pipes is permitted.

FiveQJ Type Submersible Pump for Well (Deep Well Pump) Structural Description:

1. The QJ type submersible pump unit consists of four main parts: the pump, submersible motor (including cable), water conveyance pipe, and control switch.

Submersible pump is a single-suction multi-stage vertical centrifugal pump: the submersible motor is a sealed, water-filled, vertical three-phase squirrel-cage asynchronous motor, directly connected to the pump via a claw-type or single-shaft sleeve coupling; equipped with cables of various specifications; the starting equipment includes different capacity-grade air circuit breakers and self-energizing starters; the water supply pipe is made of steel pipes of different diameters, connected with flanges; high-head electric pumps use gate valves for control.

2. Each stage of the submersible pump is equipped with a rubber bearing in the guide shell; the impeller is fixed to the pump shaft with a conical sleeve; the guide shell is assembled using threads or bolts.

3. The high-lift submersible pump is equipped with a check valve at the top to prevent damage to the unit caused by shutdown water siphon.

4. The upper part of the diving motor shaft is equipped with a labyrinth-type sand guard and two reverse-mounted skeleton oil seals, preventing sand from entering the motor.

5. The diving motor uses water-lubricated bearings, equipped with a rubber pressure-regulating diaphragm and pressure-regulating spring at the bottom, forming a pressure-regulating chamber to adjust pressure changes caused by temperature. The motor winding is insulated with polyethylene, and the nylon sheath is durable for electrical, magnetic, and water lines. The cable connection method follows the QJ type cable joint process, removing the insulation and scraping clean the paint layer, connecting and welding it securely, and wrapping it with a layer of raw rubber. Then, wrap it with 2 to 3 layers of waterproof adhesive tape, and cover it with 2 to 3 layers of waterproof rubber cloth or wrap it with a layer of rubber tape (like a bicycle inner tube) to prevent water seepage.

6. Electrically sealed with precision lock nuts, the cable outlet is sealed with a gasket.

7. The motor features a filling hole at the top, a vent hole, and a draining hole at the bottom.

8. The motor is equipped with upper and lower thrust bearings at the bottom. The thrust bearings have grooves for cooling, and they are paired with stainless steel thrust plates, which move in line with the axial force of the pump.

Six.QJ Type Submersible Pump (Deep Well Pump) Working Principle:

Prior to starting the pump, the suction pipe and pump interior must be filled with liquid. Once the pump is turned on, the impeller rotates at high speed, with the liquid rotating along with the blades. Under the force of centrifugal force, the liquid is ejected from the impeller. As it is ejected, the liquid slows down in the pump casing diffuser, increasing in pressure. It then exits through the discharge pipe. At this point, a vacuum low-pressure area, devoid of both air and liquid, forms at the center of the blades due to the liquid being thrown outward. Under the atmospheric pressure at the liquid surface, the liquid in the pool is drawn into the pump through the suction pipe. This process continues, with liquid being continuously suctioned from the pool and discharged through the discharge pipe.

SevenQJ Type Submersible Pump for Well (Deep Well Pump) - Uses and Features of the Deep Well Pump:

The QJ type submersible pump for well use is a energy-saving product designed according to national standards, widely used in agricultural irrigation, water supply and drainage for industrial and mining enterprises, and for human and animal water use in highland and mountainous areas.

This model pump is designed for...The QJ submersible pump and YQS type submersible motor are integrated for underwater operation. They feature simple structure, compact size, light weight, easy installation and maintenance, as well as safe, reliable, and energy-saving operation.

The QJR series of thermal-resistant submersible pumps are directly integrated with thermal-resistant submersible three-phase asynchronous motors, forming a thermal-resistant submersible pump assembly. These pumps can withstand water temperatures up to 100°C and are an effective tool for extracting geothermal water from wells; geothermal is a...0Inexpensive0Clean, inexhaustible energy, widely used today in heating, bathing, breeding, planting, agriculture, industry, factories, mines, services, facilities, and many other aspects. It features a pump and motor integrated unit, simple structure, reliable operation, noiseless, excellent performance, high efficiency, easy installation and maintenance; and possesses many advantages such as heat resistance, corrosion resistance, and anti-aging. It is a product for extracting geothermal water.

Variety

1. Vertical upright usage, such as in standard water wells.

2. Inclined usage, such as in inclined tunnels in mines.

3. Horizontal usage, such as in a sink.

EightQJ Type Submersible Pump (Deep Well Pump) Precautions:

Submersible pump for well use should be applied in clear water sources with less than 0.01% sand content. A pre-wetting water tank should be installed in the pump house, with a capacity to meet the pre-wetting water required for one start-up.

2. New or overhauled deep well pumps should adjust the clearance between the pump casing and impeller; the impeller must not rub against the casing during operation.

3. Prior to operation, deep well pumps should be pre-lubricated by introducing clean water into the casing of the shaft and bearings.

4. Prior to starting the deep well pump, the inspection items should meet the following requirements:

1) The base foundation bolts have been securely tightened.

2) Axial clearance meets requirements; the nut of the adjusting bolt is already installed.

3) The filling cap is tightened and lubricated.

4) Motor bearings are pre-lubricated.

5) The motor rotor and anti-reversal mechanism can be rotated by hand with ease and efficiency.

5. Submersible pumps must not run dry. The first and second stage impellers of the pump should be submerged below the water level by 1 meter. The water level in the well should be observed frequently during operation.

6. During operation, if significant vibration is detected around the foundation, inspect the pump's bearings or the motor packing for wear; replace parts if excessive wear and leakage occur.

7. Pump previously used for deep wells containing silt and sand should be flushed clean with clear water before shutdown.

8. Prior to shutting off the pump, close the outlet valve, disconnect the power, and secure the switch box. When not in use during winter, drain the accumulated water from the pump.