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Method for mechanical seal replacement of centrifugal pump

1. Due to the centrifugal pump mechanical seal generally applicable in a clean, no use of suspended particles in the medium. Therefore, the newly installed pipeline system and a reservoir irrigation, should be carefully washed clean, prevent solid impurities into the mechanical seal and the seal failure.

2. In the easy crystallization of the media, the use of mechanical seals should pay attention to the regular washing. Before starting to restart the machine, the mechanical seal must be cleaned.

3. The centrifugal pump mechanical seal should be carefully removed, no hammer, iron and other percussion, so as not to damage the dynamic and static ring sealing surface.

4. If there is dirt can not be removed, should try to remove dirt, rinse after removal, so as not to damage the sealing element.

5. Centrifugal pump installation mechanical seal before, should check all the sealing element whether there is failure or damage, if there is to be re repair or replacement.

6. Strictly checking the dynamic ring and the static ring relative friction between the sealing surface, any slight scratches scratches and other defects are not allowed. All other parts, including a pump body, impeller, seal cavity in the assembly should be washed clean, especially dynamic and static ring Temple surface, to use clean, soft cloth or cotton yarn carefully wipe clean and coated with a layer of clean grease or oil.

7. Centrifugal pump assembly must pay attention to the elimination of deviation, fastening screws, to be evenly tightened to avoid deflection, so that the sealing failure.

8. Correctly adjusting spring compression, pump installed, to manually pulling the rotor, should feel to seal spring with a certain amount of compression and lively, flexible rotation and no bite tight feeling. If the feeling is too tight or disk does not move, it should be appropriate to relax some of the.

9. The centrifugal pump on the mechanical seal with external flushing, before the start of the flushing fluid should be opened, so that the sealed cavity filled with sealing liquid. When stopping, the first stop pump, then shut the seal flushing fluid.

Mechanical seal centrifugal pump is an important component parts, mechanical seal installation is a simple and precise technology, but also the vast number of pumps users must understand the basic knowledge of the basic water pump maintenance. The company has vertical centrifugal pump and horizontal pipeline centrifugal pump two series of products.

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