Longitudinal position adjusting type telescopic sealing device

Abstract

The invention discloses a longitudinal position adjusting type telescopic sealing device. The longitudinal position adjusting type telescopic sealing device comprises a telescopic corrugated ring body, a sleeving ring body, an external positioning ring, an adjusting mechanism, an annular sealing cover and an abutting ring body. According to the longitudinal position adjusting type telescopic sealing device, the telescopic corrugated ring body is movably connected with the external positioning ring through the sleeving ring body, the longitudinal position of the telescopic corrugated ring body is adjusted through adjustment of the adjusting mechanism, an internal thread ring body is driven through rotation, a floating ring body is driven to move up and down, the floating ring body slides up and down in a sliding clamping groove of the external positioning ring through a limiting rod on the inner side, when the floating ring body moves upwards, a rolling ring body, a connecting ring body and an inner side ring body sequentially slide from the outer side of the external positioning ring to the inner side, thus, the telescopic corrugated ring body can move downwards, the longest distance of installation of the lower end of the telescopic corrugated ring body is adjusted, and the longitudinal position adjusting type telescopic sealing device is flexible and convenient to use.

Description

technical field [0001] The invention relates to a telescopic sealing device with longitudinal position adjustment. Background technique [0002] At present, the seals on the telescopic rods or shafts used for axial reciprocating motion generally use telescopic corrugated rings, and a hard external positioning ring is installed around the upper outside of the telescopic corrugated rings, and the upper end of the telescopic rod or shaft is connected to the The lower end of the telescopic corrugated ring is sealed and connected, and the external positioning ring is connected to the external mechanical structure, so that when the telescopic rod or shaft reciprocates and moves axially, the driving fluid at the upper end of the telescopic rod or shaft will not leak from the telescopic corrugated ring to the outside In the mechanical structure, this can not only ensure the reciprocating motion, but also ensure the sealing; the current use is generally a soft elastic rubber material...

AI Technical Summary

Problems solved by technology

[0002] At present, the seals on the telescopic rods or shafts used for axial reciprocating motion generally use telescopic corrugated rings, and a hard external positioning ring is installed around the upper outside of the telescopic corrugated rings, and the upper end of the telescopic rod or shaft is connected to the The lower end of the telescopic corrugated ring is sealed and connected, and the external positioning ring is connected to the external mechanical structure, so that when the telescopic rod or shaft reciprocates and moves axially, the driving fluid at the upper end of the telescopic rod or shaft will not leak from the telescopic corrugated ring to the outside In the mechanical structure, this can not only ensure the reciprocating motion, but also ensure the sealing; the current use is generally a soft elastic rubber material with a certain conical structure, which is formed by butting multi-stage elastic rubber rings, similar to bellows structure, but the telescopic corrugated ring with such a structure is generally fixedly connected with the outer positioning ring, so the longitudinal position of the lower end connection of the telescopic corrugated ring on the inner side is generally not adjustable, so that it cannot be adjusted flexibly during the actual assembly process

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