Rotating long-thin shaft sealing structure

Abstract

The invention provides a rotating long-thin shaft sealing structure. The structure is characterized in that a rotating long-thin shaft is arranged in a spiral groove body, and a groove is formed on a contact face of the spiral groove body and the rotating long-thin shaft; a copper shaft sleeve is arranged on the rotating long-thin shaft, and the lower end of the copper shaft sleeve is arranged in the groove; a seal is formed by the lower end of the copper shaft sleeve and the spiral groove body through a first rotating combination sealing structure; an outer supporting body is arranged on the spiral groove body through bolts, and a plurality of second rotating combination sealing structures are arranged between the outer supporting body and the shaft sleeve; and dynamic sealing rings are arranged at the contact portions of the first and second rotating combination sealing structures and a sealed face, and static O-shaped rings are arranged in the dynamic sealing rings in a matched manner. Lengthened guidance is formed by the rotating long-thin shaft and the outer supporting body jointly, and the rotating function of stabilizing the rotating long-thin shaft is achieved; oversize jumping is prevented, and the effect of protecting the rotating long-thin shaft is achieved; due to using of the multiple sealing structures, the sealing effect is ensured; and the problem that the rotating long-thin shaft is worn is solved, and the sealing effect is improved.

Description

technical field [0001] The invention relates to a stirring rotary seal of dust, in particular to a rotary slender shaft sealing structure. Background technique [0002] The existing screw conveyor shaft seal mostly adopts the sealing method that the gland compresses the packing packing ( figure 1 ), in the figure 1 is the rotating slender shaft, 2 is the spiral groove body, 3 is the gland, 4 is the packing material, 5 is the bolt, the rotating slender shaft 1 is in the spiral groove body 2, and the gland 3 passes through the bolt 5 Fill the packing 4 between the spiral groove body 2 and the rotating slender shaft 1. The packing 4 will rub against the rotating slender shaft 1 with a large radial runout for a long time. When the packing 4 is worn, it will also The corresponding outer circle part of the rotating slender shaft 1 is worn, so even if the standard new packing 4 is replaced, the sealing effect is still not good. It is very troublesome to repair the worn rotating s...

AI Technical Summary

Problems solved by technology

[0002] The existing screw conveyor shaft seal mostly adopts the sealing method that the gland compresses the packing packing ( figure 1 ), in the figure 1 is the rotating slender shaft, 2 is the spiral groove body, 3 is the gland, 4 is the packing material, 5 is the bolt, the rotating slender shaft 1 is in the spiral groove body 2, and the gland 3 passes through the bolt 5 Fill the packing 4 between the spiral groove body 2 and the rotating slender shaft 1. The packing 4 will rub against the rotating ...

Images