Flexible mixed particle filler

Abstract

The invention relates to a sealing technology for shaft seals of water pumps, especially suitable for the sealing of poor water quality and acid-base pump shafts. The inner and outer flexible square packings are used at both ends of the sealing packing chamber, and the inner and outer flexible square packings are used in the middle. Flexible mixed granular packing, the inner flexible square packing, flexible mixed granular packing, and outer flexible square packing in the packing chamber are pressed tightly by the pump body flange cover fastening nut on the pump body pressure flange cover, and are tightly applied to the pump body. Shaft surface and packing chamber. The invention not only can effectively seal the water flowing out from the water pump chamber in the axial direction, but also can adapt to bad water quality and strong acid and strong alkali working medium. After adding the flexible mixed granular filler, the pump shaft can run for a long time. So that the pump shaft and the flexible mixed granular filler are basically not worn.

Description

Technical field [0001] The invention relates to a sealing technology of a shaft seal of a water pump, and is especially suitable for sealing the shaft of an acid-base pump with poor water quality. Background technique [0002] At present, the sealing packing used in general water pumps is mainly butter packing, graphite packing, metal packing, etc. as shaft sealing packing. When the water pump is started, the filler acts as a seal between the water pump chamber and the sealing chamber so that the water in the pump does not flow out along the axial direction. However, with the rotation of the pump shaft, the pump shaft continues to wear on the packing, so that the gap between the sealing packing and the pump shaft gradually increases. Under the water quality, the condition of seal packing and pump shaft being worn is more prominent. For example, mud pumps used in mines, slag flushing pumps and acid-base pumps used in power plants will all accelerate the wear of the pump sha...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the common problems of packing wear, water leakage and pump shaft wear in the current pump shaft seal packing, the present invention provides a kind of flexible mixed particle packing, which can not only effectively seal the water flowing out from the water pump chamber in the axial direction , and can adapt to bad water quality and strong acid and strong alkali working medium. After adding the flexible mixed granular filler, the pump shaft and the flexible mixed granular filler can be basically not worn out under long-term operation.

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