Faults and Solutions of Axial Flow Pump

Category: Water pump knowledge

2024-08-12

Axial flow pump is a kind of pump commonly used for liquid transportation. It is widely used in water treatment, agricultural irrigation and industrial fields. It has the characteristics of compact structure, large flow rate, high efficiency and wide application range. However, in the process of use, Axial flow pump will also have some faults, affecting its normal operation. The following are common axial flow pump faults and solutions:

1. blade wear

Failure phenomenon: flow reduction, efficiency reduction, noise increase.

Solution: replace the severely worn blades, check the running status of the pump and adjust the blade angle.

2. bearing failure

Trouble phenomenon: bearing wear, high temperature, increased noise.

Solution: Check the bearing lubrication, keep the bearing clean, and replace the lubricating oil regularly. If the bearing wear is serious, it should be replaced in time. Overheating of the pump shaft may be caused by insufficient lubrication in the pump, excessive clearance between the pump shaft and the bearing, and bearing wear. The solution to this problem is to check the lubrication in time, add an appropriate amount of lubricating oil, and regularly check and replace the bearing to maintain its normal working condition.

3. seal ring leakage

Failure phenomenon: liquid leakage, pressure instability.

Solution: check the wear of the sealing ring, adjust or replace the sealing ring to ensure good sealing performance. Axial flow pump leakage is also a common fault. Leakage may be caused by aging seals, worn sealing surfaces or loose fasteners. In view of the leakage problem, the condition of the seal should be closely checked, the aging seal should be replaced in time, and the fastener should be stable.

4. rotor unbalance

Failure phenomenon: increased vibration, abnormal noise.

Solution: Check the dynamic balance of the rotor and recalibrate the rotor. If the rotor is severely worn, replace it with a new rotor.

5. pump casing crack

Failure phenomenon: liquid leakage, pressure instability.

Solution: check the pump casing for cracks or damage, if any, repair or replace the pump casing in time.

6. motor fault

Fault phenomenon: motor heating, current fluctuations.

Solution: Check the motor winding resistance and insulation performance to ensure the normal operation of the motor. If the motor is damaged, it should be repaired or replaced in time.

7. electrical control system fault

Failure phenomenon: unable to start, unstable operation.

Solution: Check the electrical control system, including switches, wiring, PLC, etc., to ensure the normal operation of the system. If there is any problem, it should be repaired in time.

8. flow instability

Failure phenomenon: the flow is large and small.

Solution: Check whether the inlet pipeline is unblocked, adjust the operating parameters of the pump to ensure stable flow.

Vibration of 9. axial flow pump

Failure phenomenon: vibration problem of axial flow pump

Solution: Excessive vibration will cause damage to the pump and affect the normal operation of the pump. Usually, vibration problems may be caused by unbalance of the pump, unstable foundation or damaged bearings. The methods to solve this problem include correcting the balance state of the pump, strengthening the foundation support of the pump, and checking and replacing the damaged bearings.

Although the failure of axial flow pump is common, it can be effectively avoided through timely maintenance and maintenance. Measures such as regular inspection of lubrication, cleaning of impurities in the pump, correction of the balance of the pump, and replacement of aging seals can help solve the problem of axial flow pump failure and ensure the normal operation of the pump.

In short, we need to analyze and deal with the failure of axial flow pump according to the specific situation. During use, regular inspection and maintenance of the axial flow pump to ensure that it is in good operating condition can extend the service life of the axial flow pump and improve production efficiency. If you need more professional knowledge, you can consult the axial flow pump manufacturer or professional maintenance personnel.

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