Sealing structure for asbestos packing of water pump bearing

Abstract

The invention discloses a sealing structure for asbestos packing of a water pump bearing. The sealing structure comprises a main shaft and an asbestos packing box, wherein the main shaft is provided with a shaft sleeve; and the asbestos packing box is positioned on the shaft sleeve. In the prior art, the packing material has a poor sealing effect, a packing pressing cover and the packing box are inconvenient to mount and dismount due to bolt connection, an operator judges reloading through the loosening degree of the bolts, and the labor intensity of the operator is increased. The invention solves the problems and provides an improved sealing structure for the asbestos packing of the water pump bearing; a threaded rod is welded on the packing box; the packing pressing cover is connected with the packing box only through nuts, and is convenient to mount and dismount; and the threaded rod is provided with a dividing rule, so that the operator can intuitively judge whether the packing needs to be reloaded or not, the packing reloading times are reduced, and the labor intensity is saved.

Description

technical field [0001] The invention belongs to a water pump bearing sealing structure, in particular to a water pump bearing asbestos packing sealing structure. Background technique [0002] The asbestos packing seal structure of the water pump bearing in the prior art is simple and the manufacturing cost is low. The commonly used fillers in the packing seal include graphite impregnated cotton fabric packing and graphite impregnated asbestos packing. The pump shaft is sealed tightly, so the wear and friction power consumption is large, the leakage is large, the service life is short, and the packing gland needs to be tightened frequently, and the packing needs to be replaced frequently. Every time the packing needs to be replaced, the gland and screw need to be reinstalled. , nuts, the operation is cumbersome; the operator needs to judge the wear of the packing according to the looseness of the bolts, and the timing of the replacement of the packing is uncertain. Once the g...

AI Technical Summary

Problems solved by technology

[0002] The asbestos packing seal structure of the water pump bearing in the prior art is simple and the manufacturing cost is low. The commonly used fillers in the packing seal include graphite impregnated cotton fabric packing and graphite impregnated asbestos packing. The pump shaft is sealed tightly, so the wear and friction power consumption is large, the leakage is large, the service life is short, and the packing gland needs to be tightened frequently, and the packing needs to be replaced frequently. Every time the packing needs to be replaced, the gland and screw need to be reinstalled. , nuts, the operation is cumbersome; the operator needs to judge the wear of the packing according to the looseness of the bolts, and the timing of the replacement of the packing is uncertain. Once the gland is opened and the packing is found to be unnecessary, it will waste time and cause Affect the labor mood of the operating workers

Images