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Slurry pump mechanical seal cleaning and cooling

Published:

Nov 07,2024

The flushing and cooling of the mechanical seal of the slurry pump are the auxiliary facilities of the mechanical seal and are essential.

1. slurry pump mechanical seal flushing

1) Classification

Self-flushing is to use the pressure difference generated by the pump itself or the pumping device in the sealed cavity to generate pressure difference, so that the sealed medium can form a closed circuit through the sealed cavity to realize flushing
The circulation flushing circulates the additional sealing fluid through a pumping device, which can be additional or an additional device can be installed in the sealing cavity.
Injection flushing, or external flushing, is to inject another liquid into the sealed cavity from the outside to improve the sealing working conditions. This method is suitable for use when transporting media containing solid particles.

Most of the mechanical seal flushing of slurry pump is external flushing.
2) Role

Used to reduce mechanical seal temperature
Ensure good lubrication of the end face of the seal
Prevention of vaporization does not cause dry friction
In containing solid particles, crystalline medium and strong corrosive medium to keep the seal ring from damage

1.)Classification

One kind of direct cooling is the cooling liquid flushing mentioned above, and the other is to pass the cooling liquid into the static ring on the gland. The part outside the sealed cavity is called quenching or back cooling. The liquid is discharged and is usually carried out with cold water.
Indirect cooling is to add a cooling jacket outside the sealed cavity. The cooling liquid of the cooling jacket is generally cold water introduced from the outside, which forms a slurry pump cooling system with the cooling of the slurry pump bearing.

2.) Role