Comb tooth shaped elasticity self-adaptive sealing structure

Abstract

The invention discloses a comb tooth shaped elasticity self-adaptive sealing structure, which comprises a rotating shaft, a shell as well as a shaft bush and an annular sealing disc which are arranged between the rotating shaft and the shell, wherein the shaft bush is sleeved with the annular sealing disc; a sealing cavity is formed in the inner wall, towards the shaft bush, of the sealing disc; a wearable sealing ring is filled in the sealing cavity; multiple sealing plugs and spring elements are arranged between the wearable sealing ring and the sealing disc; the wearable sealing ring and the shaft bush are kept in contact through an oblique thrust by virtue of the sealing plugs and the spring elements; a packing is arranged between the wearable sealing ring and the rear wall of the sealing cavity; and the sealing disc is tightly pressed and fixed on a casing through a pressing device, and at least one rubber sealing washer is arranged at the attaching surface between the sealing disc and the shell. The comb tooth shaped elasticity self-adaptive sealing structure is good in sealing performance; the effect of the sealing structure can be compounded with those of a labyrinth type seal and a wearable seal; and besides, the sealing structure is compact, convenient to machine and assemble, good in universality and wide in application scope, and needs no modification of an original shaft structure.

Description

technical field [0001] The invention relates to a comb-tooth elastic self-adaptive seal, which is a seal used between a rotating part and a stationary casing, especially a seal structure used by a centrifugal fan. Background technique [0002] With the increasingly prominent environmental and energy issues, the government has made great efforts to rectify the pollution links of various polluting enterprises. As the main power equipment of dust removal, desulfurization, denitrification and other equipment, the role of centrifugal fans should not be underestimated. However, the centrifugal fan is usually sealed with simple seal or asbestos packing, and the effect can be imagined. Therefore, the problem of external leakage of centrifugal fans is relatively serious. External leakage not only reduces the overall efficiency of the fan, but also may cause the leakage of dust gas or even toxic, harmful and irritating gases, causing serious harm to humans and the environment. There ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a comb-tooth elastic self-adaptive seal, which is used to solve the dynamic sealing problem between the rotating part and the stationary casing which is common in equipment such as centrifugal fans

Images