A filter type rotary joint

Abstract

The invention discloses a filtering type rotary joint, which comprises a rotating mandrel, a shell and a filtering device. The rotating mandrel is rotatably connected in the shell. A dynamic sealing ring is embedded in the inner end, and the outer side of the end connected to the rotating mandrel is provided with a protruding part, and a plurality of tension spring sleeves are provided inside the housing one to match the dynamic sealing ring. Static sealing ring, the connection between shell one and shell two is provided with an adjustment mechanism for adjusting the tension of the tension spring. The adjustment mechanism includes a fixed guide groove, a fixed block slidingly connected in the fixed guide groove, and a The adjustment ring seat on the outer wall of the second body and the adjustment rod whose one end is fixed on the adjustment ring seat and the other end is connected to the fixed block, the invention ensures that the tension spring is always in a compressed state through the adjustment mechanism, so that the dynamic sealing ring and the static The sealing ring is always attached to the seal, which improves the sealing performance of the rotary joint and prolongs its service life.

Description

technical field [0001] The invention relates to the technical field of rotary joints, in particular to a filter type rotary joint. Background technique [0002] Rotary joints generally include components such as housings, rotating mandrels, bearings, dynamic seals, static seals, and tension springs used to connect static seals. However, the existing rotary joints generally directly connect one end of the tension spring It is fixed on the housing, and the other end is connected with the static sealing ring. Due to the mechanical fatigue of the spring under long-term use, the spring will loosen, which will cause a gap between the static sealing ring and the dynamic sealing ring. The tightness of the rotary joint is reduced, which reduces its service life, so that the rotary joint needs to be replaced regularly. Contents of the invention [0003] The purpose of the present invention is to provide a filter type rotary joint to solve the problems raised in the background art a...

AI Technical Summary

Problems solved by technology

[0002] Rotary joints generally include components such as housings, rotating mandrels, bearings, dynamic seals, static seals, and tension springs used to connect static seals. However, the existing rotary joints generally directly connect one end of the tension spring It is fixed on the housing, and the other end is connected with the static sealing ring. Due to the mechanical fatigue of the spring under long-term use, the spring will loosen, which will cause a gap between the static sealing ring and the dynamic sealing ring. Reduces the tightness of the swivel joint, reducing its service life and requiring periodic replacement of the swivel joint

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