Solution to the problem of impeller reversal in slurry pumps with mechanical seals

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• TIME : 2025-04-16

1. Immediately stop the operation of the pump and check it

If the impeller of the slurry pump is found to be reversed, the first thing to do is to immediately stop the pump and conduct a detailed inspection. Check whether the impeller is damaged, and whether the pump motor is working properly, whether there is overload or overheating. If any abnormalities are found, they should be repaired or replaced immediately.

2. Replace or repair damaged parts

If the impeller or other components are damaged due to reverse rotation, new components should be replaced immediately. For mechanical seals, due to their material having sufficient rigidity but insufficient flexibility, they are prone to damage caused by the impact force during reversal. Therefore, it is also necessary to inspect and replace damaged mechanical seals.

3. Ensure that the rotation direction is correct

Before restarting the pump, it is necessary to ensure that the rotation direction of the pump is correct. The impeller can be prevented from reversing by using a key connection and locking the impeller nut. In addition, before testing, the direction of rotation of the motor and main pump should be checked to ensure they are correct.

4. Adjust the clearance of the transmission part

If the slurry pump has been reversed, it may cause an increase in the clearance between the transmission parts. In this case, it is necessary to carefully adjust the clearance of the transmission part to avoid excessive noise during future operation.

5. Preventive measures

To prevent the impeller of the slurry pump from reversing, attention should be paid to the rotation direction of the impeller displayed on the pump body during installation, and appropriate locking methods such as key connections and impeller nuts should be used for locking. Regular maintenance checks are conducted to ensure that all components are in good condition and to prevent the occurrence of reversals.

By following the above steps, the problem of impeller reversal in slurry pumps can be effectively addressed, and measures can be taken to prevent future occurrences.

　　This article originates from https://www.fuyangpumps.com/news/389.html. Please indicate the source when reprinting.

(Editor in charge: Slurry Pump https://www.fuyangpumps.com/)

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