How to Solve the Failure of the Slurry Pump Seal?

 As a Slurry Pump Manufacturers, share with you. In different stages of operation, the reasons for the failure of the slurry pump seal are different, and then we will analyze them one by one.

SP Pump

 

1. The slurry pump leaked during the assembly process

 

Slurry pumps are prone to problems during installation. It is generally necessary to observe whether the slurry pump is leaking through static pressure test. When the leakage is small, there are problems with the moving ring or static ring sealing ring in small shifts. If the leakage is large, it is There are problems with the dynamic and static ring friction pairs. The leaking medium is sprayed along the axial direction, which is mostly the problem of the moving ring seal. If the leaking medium is sprayed around or leaks from the water cooling port, most of the static ring seals have problems. At this time, you should carefully observe and determine the problem and proceed in time Adjustment.

 

2.The slurry pump leaked during trial operation

 

After the static pressure test, the leakage of the slurry pump is generally caused by the damage of the friction pair of the dynamic and static rings. There are many reasons for this phenomenon, generally: axial force caused by abnormal phenomena such as cavitation, evacuation, and holding pressure, excessive compression when installing the seal, too tight or too loose moving or static ring seals, There are reasons such as particles in the working medium entering the friction pair. The main solution is to re-disassemble and replace the seal.

 

3. Sudden leakage of slurry pump during normal operation

 

In this situation, a few are caused by normal wear or the service life of the slurry pump, but most of them are caused by changes in working conditions or improper operation or maintenance. The main reasons are: evacuating cavitation or holding the pressure for a long time, the actual output is too small, the sealing cooling water is interrupted, the operation is stopped for a long time and the car is restarted, the corrosive, polymerizable or gelling substances in the medium increase, and the slurry The temperature of the working environment of the pump changes drastically, and the working conditions are frequently adjusted. In the process of using the slurry pump, please pay attention to the use specifications. The shaft seal water must be connected before use, and the pump can be turned off after five minutes of stopping. If the pump is out of operation for a long time, clean water and clean the pump cavity and mechanical seal before shutting down. , Manual cranking when restarting, prolong the service life of the slurry pump.

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