What are the main factors causing friction pair seal failure?

1. During operation, due to abnormal phenomena such as evacuation, cavitation and pressure suppression, a large axial force is caused, causing the contact surfaces of the dynamic and static rings to separate.
2. When installing the mechanical seal, the compression amount is too large, resulting in serious wear and scratches on the end face of the friction pair.
3. The sealing ring of the moving ring is too tight, and the spring cannot adjust the axial floating amount of the moving ring.
4. The static ring sealing ring is too loose. When the moving ring floats axially, the static ring separates from the ring seat.
5. There are particles in the slurry, which enter the friction pair during operation and damage the sealing end faces of the dynamic and static rings.
What are the analysis and solutions if there is a sudden leakage during normal operation?
The slurry pump suddenly leaks during operation. A few of them are due to normal wear and tear or have reached the end of their service life, while most of them are caused by large changes in the working conditions or improper operation and maintenance. The main reasons are as follows: 1. Evacuation, gas Corrosion or pressure suppression for a long time may cause seal damage. 2. The actual output of the pump is too small, a large amount of medium circulates in the pump, and heat accumulates, causing the medium to vaporize, leading to seal failure. 3. The seal cooling water is interrupted. 4. If the machine is stopped for a long time and there is no manual cranking when restarting, the friction pair seal may be damaged due to adhesion and the sealing surface may be damaged. 5. There are more corrosive, polymeric and gelling substances in the medium. 6. The ambient temperature changes rapidly. 7. Frequent changes or adjustments in working conditions.
The mechanical seal of a slurry pump generally needs to be connected to cooling water when using it. Before using the pump, the shaft seal water must be connected first. When stopping the pump, it must be shut down after stopping the pump for a few minutes. The role of cooling water is self-evident. Many mechanical seal failures of slurry pumps are caused by insufficient cooling water pressure, interruption, or even unclean cooling water. Therefore, shaft seal water is very important. We must Pay enough attention.
If you want to know more about slurry pump accessories, please feel free to call us!
Shijiazhuang Panshi Pump Industry is a manufacturer of slurry pumps in Shijiazhuang. It mainly designs, manufactures and sells slurry pumps and accessories. Mainly engaged in mud pumps, submersible pumps, foam pumps, desulfurization pumps and other series

www.panstopump.com, laurashi@panstopump.com, 008615732149758