Corrosion resistant centrifugal pump with the special requirements of shaft seal of pump

For corrosion resistant centrifugal water pump, due to the particularity of the medium - — Both abrasive abrasive and corrosive, caused the pump shaft seal mechanical seal has some special requirements, induces mainly has the following:

1, the corrosion resistant centrifugal pump shaft seal must use dry type mechanical seal

dry seal here refers to the user often say 'dry' generalized, namely no washing and cooling pump transmission medium to the sealing surface friction heat, liquid such as water, buffer and the outside world can not leak to the pumping medium.

2, USES a pair of hard in hard materials friction pair

due to the pumping medium contains a lot of solid powder, so the friction pair must adopt wear-resisting of high hardness material, in order to increase the service life of the pair of friction pair.

3, mechanical sealing spring is not in contact with the pumped medium

pumping medium contains a large amount of solid powder, in order to prevent the expansion deformation of powder deposition effects after spring, spring mechanical seal is not in contact with the pumping medium.

4, open the seal chamber for regular with the flushing fluid system of mechanical seal, seal chamber is equipped with the throttle bushing to reduce the volume loss; For the corrosion wear resistance of the centrifugal pump seal cavity, open, should be adopted in order to prevent the deposition of solid powder, sealed cavity parts of the sealing face of the friction pair is located in the open.

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