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Hydraulic axial flow pump manufacturers share four types of axial flow pump faults and solutions

2023-01-11 17:32:23
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  What should I do if the axial flow pump fails? In order not to affect the normal use of the axial flow pump, we should find out the cause of the fault together and solve the problem in time. Not everyone can see its fault at a glance? Our Anhui hydraulic axial flow pump manufacturer will sort out four common faults and their solutions. I hope it can help you.

  Symptom 1: pump overload

  Blade placement angle error; Treatment method: readjust the blade placement angle

  2. The operation point deviates from the design point; Handling method: adjust the operating point within the allowable range

  The rotating speed exceeds the specified value; Treatment method: check the cause and adjust the motor speed.

  Friction between blade outer circle and impeller chamber; Treatment method: adjust the clearance and check whether the rubber bearing is damaged?

  There are sundries around the blade or barrier; Treatment method: remove sundries;

  6. The head is too high, the outlet pipe is blocked, and the discharge valve is not fully opened; Treatment method: remove debris, open, open, open,

  The packing seal pressure is too high; Treatment method: properly loosen the packing cover

  Two-phase operation of motor; Handling method: check the power supply status and wiring status

  Abnormal noise and vibration

  Corrosion due to air inlet; Treatment method: increase the water inlet level

  The pump base is not perfect. The electric shaft is not concentric or the transmission shaft is bent; Treatment method: reinforce the foundation, reinstall and correct the transmission shaft

  Excessive residual unbalance weight of rotor; Treatment method: take out the rotor and rebalance;

  The guide shaft or shaft sleeve is seriously worn, and the rolling bearing is damaged and invalid; Treatment method: replace the guide shaft or shaft sleeve, and replace the rolling bearing

  Partially blocked or damaged blades; Treatment method: remove sundries or replace blades;

  Loosen the foundation bolts; Treatment method: check and reinforce

  7. All fasteners and drive nuts are loose or the foundation is not firm; Treatment method: check and tighten the bolts of each fastener to strengthen the foundation.

  8. Multiple pumps are installed in the same tank, which are improperly arranged, causing interference; Treatment method: add partition in the intake tank;

  9. The water inlet level is too low, and the submergence depth of the impeller is not enough; Treatment method: lower the installation height or raise the water inlet level

  Symptom 3: insufficient flow

  The blade installation angle is too small; Treatment method: readjust the blade installation angle

  The speed does not reach the rated value; Treatment method: eliminate the fault of prime mover;

  Blade outer circle wear and blade damage; Treatment method: replace the blade

  4. The lift is too high; Treatment method: try to adjust the head and check whether the outlet pipe is blocked.

  5. Blades and sundries are wrapped on guide vanes or trash racks; Treatment method: remove sundries

  Fault phenomenon 4: no water

  The pump is in the wrong direction; Treatment method: adjust the rotation direction of the prime mover

  Blade fixing failure; Treatment method: check the blade and impeller fixing device, and readjust the blade installation angle

  A large amount of air enters the intake; Treatment method: increase the water inlet level

  The suction inlet is blocked; Treatment method: remove sundries at the suction inlet

  The siphon outlet height is too high; Treatment: lower the height.

  The above four troubleshooting methods mentioned by the hydraulic axial flow pump manufacturer Xiaobian hope to bring you some reference value! If you have different solutions to the hydraulic axial flow pump fault, please call our website of Anhui Senlan Heavy Industry Technology Co., Ltd. to discuss and share.


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