Centrifugal pump common fault cause analysis and treatment - News - Global IC Trade Starts Here.

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1. The reason why the pump can not start or start the load is as follows:
(1) The prime mover or power supply is abnormal. The solution is to check the power and prime mover conditions.
(2) The pump is stuck. The treatment method is to check the coupling by hand, and disassemble if necessary to eliminate the malfunction of the static and dynamic parts.
(3) The packing is pressed too tightly. The treatment is to relax the filler.
(4) The discharge valve is not closed. The treatment is to close the discharge valve and restart.
(5) The balance tube is not smooth. The treatment method is to clear the balance tube.
2. The reason why the pump does not drain and the treatment method are as follows:
(1) The pump is not enough (or the gas in the pump is not exhausted). The treatment is to refill the pump.
(2) The pump is not turning right. The method of processing is to check the direction of rotation.
(3) The pump speed is too low. The treatment method is to check the rotation speed and increase the rotation speed.
(4) The filter screen is clogged and the bottom valve is not working. The treatment method is to check the filter to eliminate debris.
(5) The suction height is too high, or a vacuum appears in the aspiration tank. The treatment method is to reduce the suction height; check the suction tank pressure.
3. The reason for the interruption of the pump after draining and the treatment method are as follows:
(1) Air leakage from the suction line. The treatment method is to check the connection of the suction side pipe and the sealing of the stuffing box.
(2) The gas on the suction side is not exhausted when the pump is pumped. The treatment method is to require refilling the pump.
(3) The suction side is suddenly blocked by foreign matter. The treatment method is to stop the pump to process the foreign matter.
(4) Inhale a large amount of gas. The treatment method is to check whether the suction port has a vortex and whether the submerged depth is too shallow.
4. The reasons for the lack of traffic and the treatment methods are as follows:
(1) Same as 2.2, 2.3. The solution is to take appropriate measures.
(2) The system has a static head increase. The method of treatment is to check the liquid level and system pressure.
(3) Increase in resistance loss. The treatment method is to check the pipeline and the check valve and other obstacles.
(4) The wear ring of the housing and the impeller is excessively worn. The treatment is to replace or repair the wear ring and the impeller.
(5) Leakage in other parts. The treatment method is to check the shaft seal and the like.
(6) The pump impeller is blocked, worn and corroded. The treatment method is cleaning, inspection and exchange.
5. Reasons for insufficient head and treatment are as follows:
(1) (1) of the same as (1), (2), (3), (4), (1) of 2.4, and (6) of 2.4. The solution is to take appropriate measures.
(2) Impeller mounted reverse (double suction wheel). The treatment is to check the impeller.
(3) The liquid density and viscosity do not match the design conditions. The treatment is to check the physical properties of the liquid.
(4) The flow rate is too large during operation. The solution is to reduce the flow.
6. The main reasons for the power consumption during operation and the processing methods are as follows:
(1) The impeller and the wear ring, the impeller and the shell are honed. The treatment is to check and repair.
(2) Same as item (4) of 2.5. The solution is to reduce the flow.
(3) The liquid density increases. The treatment is to check the liquid density.
(4) The packing is pressed too tightly or dryly. The treatment is to loosen the packing and check the water seal tube.
(5) Bearing damage. The method of handling is to check for repair or replacement of the bearing.