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Common faults and solutions of centrifugal energy-saving water pumps

09 Jan 2021Email

1 The centrifugal energy-saving water pump vibrates violently and has loud noise

   Equipment abnormal noise is a symptom of many equipment failures, and energy-saving water pumps are no exception. In the production process, the vibration of the centrifugal pump body is more common. The reasons for this phenomenon are (1) the foundation of the body is not firm and the foot screws are loose (2) the pump shaft and the motor shaft are not concentric (3) the cavitation at the entrance of the impeller causes greater vibration (4) the rotating parts are damaged

 

Solution: To improve the feasibility of the above-mentioned faults that can be seen, fix the anchor bolts and check whether the fixed structure of the machine body is loose or not. The machine detects the neutrality of the original shaft and the motor shaft. Check whether the rotating parts are worn at the same speed. Reduce the inlet flow rate or reduce the flow rate and reduce the speed of the cloud to reduce cavitation

 

  2 High temperature of centrifugal energy-saving water pump motor

   (1) The centrifugal pump has low power (2) The high speed pump or the motor bearing is less lubricating (3) The friction of the rotating parts of the centrifugal pump produces a large frictional force and the temperature rises.

  Solution: Reasonably select the power of the pump, check the running conditions of the bearings everywhere, and replace the sliding parts of the moving parts in time.

 

  3 Centrifugal energy-saving water pump flow is too low

   (1) Centrifugal pump tube head or pump body plug (2) Impeller miller (3) Motor reverse rotation or voltage is too low (4) Inlet pipeline gas (5) The pump is full of liquid.

Solution: Check whether there is any foreign matter in the pipeline or pump body suction pipe. Check the leak point of the inlet pipe. Tighten each sealing surface to remove the air. Check whether the impeller is worn. Check the motor wiring and ensure the voltage is stable. Unscrew the upper cover of the centrifugal pump Or open the exhaust valve to exhaust the air

 

  4 The water cannot flow out after running the centrifugal energy-saving water pump

   (1) There is air in the pump casing (2) The bottom valve is rusty and cannot be opened (3) The speed of the centrifugal pump is too low; (4) The suction is too large (5) The resistance loss in the water inlet and outlet pipes is too large.

Solution: Eliminate the rust of the air bottom valve in the pump casing or perform maintenance and adjustment. Check the circuit. Increase the speed of the centrifugal pump. Ensure that the centrifugal pump used does not exceed the maximum allowable suction. Reduce the length of the water pipe and the amount of water pipe bends. The resistance of water flow in the pipe.

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