Fault and Solution of Horizontal Centrifugal Pump

Category: Water pump knowledge

2024-08-22

horizontal centrifugal pumpIs a common fluid conveying equipment, widely used in various fields. However, during use, some failures may be encountered. Common faults and their solutions are listed below.

1. common faults

1. Insufficient flow: may be manifested as unstable flow or not reaching the expected value. When the flow of the horizontal centrifugal pump is reduced or there is no flow failure, it may be caused by the blockage of the pump inlet or the damage of the pump impeller.

2. Noise and vibration: It may be caused by wear or improper installation of some parts of the pump. The generation of noise is mostly due to the matching clearance between the pump shaft and the bearing is too large or the bearing is damaged.

3. Leakage: seal wear, pump body damage, etc. may lead to leakage. Poor sealing of the pump body or aging and damage of the seal may cause water leakage of the pump.

4. Bearing overheating: It may be caused by insufficient lubrication or bearing damage. The abnormal temperature rise of the horizontal centrifugal pump may also be a manifestation of failure. The reason may be that the pump operating environment temperature is too high, the lubricating oil is insufficient, or the water quality problem.

5. Unable to start or difficult to start: It may be caused by a power problem or a stuck inside the pump. During the operation of the horizontal centrifugal pump, if the motor cannot be started normally or cannot be started again after shutdown, it may be a motor failure or unstable power supply.

2. Solution

1. Insufficient flow: First check whether the inlet valve is fully opened, and secondly check whether the installation height of the pump meets the requirements to ensure that the pump will not cause insufficient flow due to cavitation. In addition, it is necessary to check whether there is blockage or foreign matter inside the pump. The solution is to clean the inlet blockage or replace the damaged pump impeller.

2. Noise and vibration: check whether the base of the pump is firm and whether the rotating part of the pump is flexible. Replace worn parts or adjust installation position if necessary. The solution is to adjust the bearing clearance or replace the damaged bearing.

3. Leakage: First check whether the seal is intact, and replace it in time if there is any problem. At the same time, check whether the pump body is damaged or cracked, and repair or replace it if necessary. The solution is to check and replace the damaged seal to ensure that there is no leakage at the pump body seal.

4. Bearing overheating: First check the lubrication of the bearing. If the lubrication is insufficient, add lubricating oil in time. If the bearing is damaged, replace it with a new one. The solution is to optimize the operating environment of the pump, add lubricating oil in time or deal with water quality problems.

5. Unable to start or difficult to start: First check whether the power supply is normal, and then check whether there is foreign matter stuck inside the pump. If there is a problem, clean the inside of the pump or repair the power supply problem. The solution is to check the motor status and ensure that the power supply is stable.

3. preventive measures

1. Regular inspection: regular inspection of the pump, found that the problem in a timely manner, to avoid the expansion of the fault.

2. Maintenance: Follow the instructions for maintenance, such as replacing seals, cleaning filters, etc.

3. Correct operation: Use the pump correctly in accordance with the operating procedures to avoid malfunctions caused by misoperation.

4. Environmental factors: Ensure that the working environment of the pump meets the requirements, such as temperature, humidity, cleanliness, etc.

There are many reasons for the failure of horizontal centrifugal pumps, but they can generally be solved through inspection and maintenance. Regularly check the working status of the pump and take necessary maintenance and maintenance measures to extend the service life of the pump and ensure its normal operation.

In short, for the common faults of horizontal centrifugal pumps, we need to diagnose in time and take corresponding solutions. At the same time, regular maintenance and maintenance, correct use and operation can effectively prevent the occurrence of failures and extend the service life of the pump.

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