Vertical deep well pump characteristics

(A) vertical deep well pump structure

Deep well pump device consists of pump working parts, pump tube, drive shaft, pump seat and drive motor (deep well pump with three-phase asynchronous motor) and so on, for pumping deep underground water. It is the main difference with the submersible pump, submersible pump is submersible pumps and submersible pumps directly assembled into the unit, or by the submersible motor shaft extension directly into the pump components to form a pump-one product; the history of deep well pump device Of the motor and the pump is installed separately, the middle through a long axis together: the working parts of the pump installed in the ground with a certain aperture of the well, the drive motor - deep well pump with three-phase asynchronous motor installed in the well The tube is driven by the long axis on the ground other than the tube.

(B) vertical deep well pump characteristics

Vertical deep well pump is characterized by the diameter of the pump by the strict restrictions on the size of the pump is slender, the higher the lift, the pump more series, the rated head changes by increasing or decreasing the pump series to adjust, this feature Similar to the use of submersible pumps for wells. It drives the motor to work on the ground, the diameter size from the well diameter restrictions, nor affected by well water. But the motor and pump work between the power transmission components rely on multi-level long axis transmission, loss larger. When the pump working parts are installed deep, the shaft is very long (up to 80 ~ 100m above), the drive shaft is prone to failure.

(C) the motor phase sequence determination and anti-reverse device

As the deep shaft pump pump shaft and drive shaft are used threaded connection, when the normal operation of deep well pump (from the motor overlooking the top down for the counter-clockwise), the drive shaft and the pump pipe thread are in a tight state. However, when the deep well pump is installed for trial operation, if the connection between the motor and the power supply is determined according to the specified procedure, the motor rotation may be reversed, resulting in a short reversal of the start of the deep well pump, And the pump pipe connections have a bad effect; in the deep well pump operation, when the pump from normal operation state into the stop state, the pump tube in the water column due to the role of gravity downward flow, impulse pump impeller, will deep wells Reverse rotation of the pump will also affect the drive shaft and pump pipe connection screw loose, thus affecting the reliability of threaded connections. For this reason, from the guarantee pump tubing and drive shaft thread connection reliability, thus guarantees the deep well pump the movement security to start, in the vertical deep well pump electric motor installs the anti-reverse installment, guarantees the deep well water pump at any moment not Reversing, thereby fundamentally eliminating the possibility of screw connection loosening.