Deep well water, agricultural irrigation, pool and river drainage, special industrial water supply and drainage.
Technical parameters
Traffic: 2 ~ 550 m3 / h
Head: 10 ~ 350 m
Speed: 2900 r/min
CAL: Φ Φ 350 ~ 150
Working pressure: maximum 3.0MPa
The main characteristics of submersible pump for QJ type well
Description of structure of submersible pump for QJ type well
Medium temperature: -15~+80℃
The main characteristics of submersible pump for QJ type well
1. Motor, water pump body, diving into the water operation, safe and reliable.
2. There is no special requirement for well pipe and water pipe (that is, steel pipe well, ash pipe well, earth well, etc.);Under the pressure permit, steel pipe, rubber pipe, plastic pipe and so on can be used as water pipes).
3. Convenient installation, use and maintenance, small footprint, no need to build a pump room.
4. Simple structure, saving raw materials.The use of submersible pump conditions are appropriate, proper management and service life has a direct relationship.
Description of structure of submersible pump for QJ type well
1.QJ type submersible pump unit is composed of four parts: water pump, submersible motor (including cable), water pipe and control switch.The submersible pump is a single-suction multistage vertical centrifugal pump; the submersible motor is a hermetically filled wet, vertical three-phase squirrel cage hetero-step motor, and the motor and the water pump pass through claw type or middle type.Key cylinder type coupling direct;It is equipped with three core cables of different specifications: starting equipment is air switch of different capacity grade and autocoupling reduced-pressure starter, water supply pipe is made of steel pipe of different diameter, which is connected by flange, and high head electric pump is controlled by gate valve.
2. Each stage of the submersible pump guide shell is provided with a rubber bearing;The impeller is fixed on the pump shaft with a cone sleeve: the guide shell is connected with a Lei or bolt.
3. The check valve is installed on the upper part of the Gaoyangcheng submersible pump to avoid the damage of the unit caused by water hammer.
4. The upper part of the submersible motor shaft is equipped with a labyrinth type sand control device and two skeleton oil seals assembled in reverse to prevent the flowing sand from entering the motor.
5. The submersible motor adopts water-lubricate bearing, and the lower part is equipped with rubber pressure regulating film and pressure regulating spring to form a pressure regulating chamber to adjust the pressure change caused by temperature;The winding of the motor adopts polyethylene insulation and nylon sheathed water-resistant electromagnetic wire. According to the QJ cable joint process, the insulation of the joint is removed and the lacquer layer is scraped clean. The joint is connected separately and welded firmly.Then use waterproof adhesive tape wrapped 2~3 layers, the outer bread on 2~3 layers of waterproof adhesive tape or water adhesive wrap a layer of rubber belt (bicycle tire > to prevent water seepage.
6. The motor is airtight, using precision mouth stop screw 牷, and the cable outlet is sealed with rubber school.
7. The upper end of the motor is provided with a water injection hole, a water discharge hole, and a water discharge hole.
8. The lower part of the motor is equipped with a thrust bearing. The thrust bearing has a groove on it for dry cooling, and it is a stainless steel thrust plate for grinding, bearing the axial force of the water pump.
