Repair of mechanical seals for pumps

Pump mechanical seal refers to a device installed and operated in pump equipment to play a dynamic sealing role to prevent the fluid medium in the pump volute from flowing out of the pump through the pump shaft. However, in use, there will inevitably be failures, so it is very important to master the corresponding maintenance methods.

(l) The seal between the shaft sleeve and the shaft;

(2) The seal between the moving ring and the shaft sleeve;

(3) Seal between dynamic and static rings;

(4) Sealing between the static ring and the static ring seat;

(5) The seal between the sealing end cover and the pump body.

Generally speaking, the leakage between the overhanging shaft of the shaft sleeve, the sealing end cover and the pump body is relatively easy to find and solve, but it needs to be carefully observed, especially when the working medium is liquefied gas or high pressure, toxic and harmful gas, it is relatively difficult. some. The rest of the leakage is difficult to distinguish and judge intuitively. Only on the basis of long-term management and maintenance practice, the leakage symptoms can be observed, analyzed, and judged before the correct conclusion can be drawn.

In short, in order to better prolong the use efficiency of mechanical seals for pumps, we need to do corresponding maintenance work on a regular basis to reduce unnecessary losses and effectively prolong their service life.