Reasons and Solutions for Abnormal Pressure Failure of Slurry Pump

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• TIME : 2025-04-21

Common causes of abnormal pressure faults

The sealing performance of the pump decreases

Reason: The damaged sealing ring of the pump causes fluid leakage, and the aging or wear of the pump bearings reduces the sealing performance of the pump.

The speed of the pump is unstable

Reason: Excessive sliding of the rotor pin shaft and poor production process of the pump have resulted in unstable quality.

Bearing issues

Reason: Overheating of the slurry pump bearings may be caused by excessive or insufficient lubricating grease, impurities in the lubricating grease, damaged bearings, and other reasons.

Mechanical seal issues

Reason: Mechanical seal damage or wear, such as long-term evacuation, cavitation or pressure suppression leading to seal damage, interruption of sealing cooling water, rapid changes in ambient temperature, etc.

blocking

Reason: The slurry pump may encounter blockages when transporting materials, which may lead to abnormal pressure.

Solution to abnormal pressure faults

Check and replace seals

Method: Replace the sealing ring with a new one, check and replace the bearing to improve the sealing performance.

Adjust the speed of the pump

Method: Adjust the speed to ensure stable pump speed.

Bearing maintenance

Method: Adjust the amount of lubricating grease, clean the bearings, and replace or reassemble the bearings if necessary.

Mechanical seal maintenance

Method: Ensure that the mechanical seal cooling water is unobstructed, manually rotate the pump shaft before restarting to ensure that the friction pair does not adhere.

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Clearing blockages

Method: If the abnormal pressure is caused by blockage, you can try to loosen the material by tapping or vibrating, or use a high-pressure water gun to flush the slurry pump.

Check for electrical issues

Method: Check the power supply situation, including whether the connector connection is secure, whether the switch contact is tight, whether the fuse is blown, and whether the three-phase power supply is missing phase. If there is a circuit break, poor contact, blown fuse, or phase loss, the cause should be identified and repaired in a timely manner.

Mechanical troubleshooting

Method: Check if it is a mechanical failure of the water pump itself, such as tight packing or blockage between the impeller and the pump body due to debris, rust on the pump shaft, bearings, and leak reducing ring, severe bending of the pump shaft, etc. The elimination methods include loosening the packing, dredging the drainage channel, dismantling the pump body to remove debris and rust, removing the pump shaft for calibration or replacing it with a new pump shaft.

Through the above methods, it is possible to effectively diagnose and solve the problem of abnormal pressure in slurry pumps, ensuring the normal operation of equipment and the production efficiency of enterprises.

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

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