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QJX series down suction mining submersible pump
Flow range: 50 ~ 1100m³ / h
Head range: 100 ~ 1700m
Power range: 55 ~ 4000KW
Temperature range: ≤40 ℃
QJX down-suction submersible electric pump (vertical and horizontal submersible pump, QJX high-flow submersible pump) is a new type of water lifting equipment independently developed by Shanghai Weihu Pump Industry Co., Ltd. It is widely used in rivers and lakes for water extraction; New or renovated tap water systems and various regional secondary water supply systems. The pump is a down-suction type, capable of draining the surface water on the working surface; the motor is a submersible three-phase asynchronous motor: small footprint, convenient installation and use, reliable and durable, and long life. QJX down-suction vertical and horizontal submersible pumps can be used vertically and horizontally to better adapt to the complex environment of the mine. Traditional QJ series horizontal submersible pumps cannot drain the water under the mine and are not convenient for underground work. New mines With submersible pump, the water above 0.01m can be discharged out of the well.
(The flow can reach 650 tons per hour and the head can reach 1500 meters).
Motor, water pump—body, submerged into the water, no Mars, explosion-proof, safe and reliable.
2. There are no special requirements for well pipes, as long as the water pipe can withstand the corresponding pressure.
3. The installation and maintenance are convenient and simple, the floor space is small, and there is no need to build a pump room.
4. Simple structure, saving raw materials.
5. High efficiency, energy saving, high single-stage lift, high flow, high lift, imported German high-efficiency energy-saving motors, such as: AT200QJX series submersible motors can achieve 110KW (maximum outer diameter 184mm), 2 speeds (2900 / minute) To achieve 410KW, the minimum outer diameter of the pump can be 134mm.
Conditions of Use:
1. Three-phase AC power supply with a power frequency of 50Hz and a rated voltage of 380v or 440V, 550V, 660v, 1140V or high-voltage 3KV, 6KV (tolerance + -5%).
2.Generally non-corrosive water.
3. The solid content (by mass) is not more than 0.01%.
4. The pH value of acid being pumped is 6.5-8.5.
5.The chlorine content in water is not more than 400mg / L.
6, hydrogen sulfide content is not greater than 1.5mg / L
7. The temperature of the conveying medium does not exceed 20 ° C.
8. The water inlet of the pump must be below the dynamic water level lm, but the diving depth does not exceed 70m below the static water level, and the lower end of the electric pump is at least lm from the bottom of the well.
9. The well is required to be upright, the well wall is smooth, and the well pipes must not be staggered.
Structural characteristics and working principle:
1.QJ series mining submersible pump consists of two parts: submersible three-phase asynchronous electric motor and water pump. The motor is directly connected to the upper pump body, and a reliable shaft seal device is provided on the upper end of the motor shaft, 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 pump.
2. The submersible pump is a single-suction multistage vertical centrifugal pump; the submersible motor is a water-filled wet and vertical well submersible asynchronous motor. The motor and the water pump are directly connected through a barrel coupling.
3. The motor winding is a 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 does not have a thrust bearing that can withstand the axial force of the pump. The thrust bearing of the high-lift pump uses a nickel-containing copper sector block. .
5. High-lift submersible pump is equipped with axial force carrier between the pump and the motor, and the lift can be increased to 900m.