language

News

News And Information

Home page

2021

Water pump seal leakage causes and treatment methods

Water pump seal leakage reasons are as follows: 1. The reason for the excessive surface wear of the friction pair of the centrifugal pump mechanical seal is that the spring force is too large, the end face ratio is too high, the sealing medium is not clean, and the spring compression is too large. Centrifugal pump seal friction pair surface wear too fast processing method: replace the spring, add a filter, adjust the spring. 2. After the centrifugal pump is sealed, the machinery has vibration, heat, smoke, leakage, wear and other faults. The cause of the failure is usually the end face width is too large, the end face pressure is too large, the dynamic and static ring surface is rough, the friction pair is not properly matched, etc. Poor cooling effect, poor lubrication, end face

Author:

　　Water pump sealWater leakageThe reasons are as follows:

　　1The reason for the excessive surface wear of the friction pair of the centrifugal pump mechanical seal is that the spring force is too large, the end surface ratio is too high, the sealing medium is not clean, and the spring compression is too large.

CentrifugationWaterPump sealThe treatment method of the friction pair surface wear too fast: replace the spring, add a filter, and adjust the spring.

　　2CentrifugeWaterPump sealRear machineryVibration, heat, smoke, leakage, wear and other failures. The cause of the failure is usually the end face width is too large, the end face pressure is too large, the dynamic and static ring surface is rough, the friction pair is not properly matched, etc. The cooling effect is not good, the lubrication is poor, the end face is corrosion resistant, and the durability at high temperature is poor.

CentrifugationWaterPump sealLeakage treatment method: reduce the end face width, reduce the end face specific pressure, impose the end face finish, replace the static ring, reasonable matching , Strengthen cooling measures, improve lubrication conditions, and replace corrosion-resistant and durable high-temperature moving coils.

　　3CentrifugeWaterPump sealThe reason for intermittent leakage is that the axial movement of the rotor is too large and the displacement of the moving ring is too late. For example, the horizontal centrifugal pump itself is not running smoothly, pressure fluctuations. Treatment method of intermittent water leakage of centrifugal pump mechanical seal: adjust the axial displacement and stabilize the working pressure of the pump.

　　4, CentrifugationWaterPump sealThe causes of serious leakage are: the friction pair is damaged or broken, the fixed ring rotates, the moving ring cannot float axially, the spring is broken, and the anti-rotation pin Damage or loss of function, the pump is quickly evacuated.

CentrifugationWaterPump sealTreatment of serious leakage: check and replace the dynamic and static ring;Replace the sealing ring and fixed static ring, and check whether the spring force and thrust ring are stuck;Replace the spring and replace the anti-rotation pin to prevent time spent during operation.

The leakage of the submersible pump is caused by the aging and wear of the sealing device. In addition to replacing the new sealing ring, the following simple troubleshooting methods can also be used.

Fault 1The sealing ring of the submersible pump loses its elasticity due to long-term use. At this time, you can take out the sealing ring and use another one.0.3~0.5mmThick paper or cloth cut into a cushion slightly larger than the original seal ring. Fit into the groove and install the original sealing ring.

Fault2The rubber seal ring in the nylon seal seat is worn. The sealing ring can be removed, then replaced and installed. If the fastening spring on the sealing ring loses its elasticity or breaks, the spring can be removed and tied with steel wire or iron wire to the appropriate diameter.

Fault3, The seal ring is severely worn. Take out the nylon sealing ring and apply butter asbestos rope, wrap it on a stainless steel sleeve, fill it to a position slightly higher than the original nylon seat, then inject butter, and then tighten the nylon seat with bolts and compact.

Fault4The sealing ring between the sealing box and the cast iron loses elasticity. The sealing ring can be removed from the cast iron groove and a0.6~1mmThick hard paper, cut into the same size, pad into the groove. Then place sealing ring in.

Fault52. The rubber seal ring of the oil hole is damaged. You can find a piece of tape, cut a hole slightly larger than the bolt, add a flat washer on it, and put it into the oil hole of the bolt together.

Key words:

Water pump seal