Ultrahigh-pressure omnidirectional dynamic joint

Abstract

The invention relates to an ultrahigh-pressure omnidirectional dynamic joint which comprises a rotating valve body and a rotating shaft assembly. The rotating valve body is in an angular structure, and hollow cavities at both ends are respectively provided with communication holes; a rotating shaft in the rotating shaft assembly is provided with through holes; the front end of the rotating shaft is sleeved by an O-shaped ring, a bearing shell, a gasket, a guide ring, a pressure ring and another O-shaped ring, and the rear end of the rotating shaft is sleeved by a bearing and a locking nut to form the rotating shaft assembly; a series of parts forming the rotating shaft assembly are pressed in the hollow cavities of the rotating valve body by the locking nut which is connected with the inside thread of the rotating valve body so as to fix the sleeved parts, and a threaded plug and a threaded sleeve is connected with an external pipeline to form the ultrahigh-pressure omnidirectional dynamic joint. The invention achieves the ultrahigh pressure sealing effect over 300 MPa under an omnidirectional dynamic rotating condition, can randomly adjust a rotating angle and has the advantages of flexible rotation, reliable structure and long service life.

Description

technical field [0001] The invention relates to a joint connected to a liquid pipeline, and is mainly used in the pipeline connection of an ultra-high pressure water cutting machine. It can be rotated at any angle on two mutually perpendicular axes to ensure that the fluid delivered above 300Mpa does not leak and is a flexible ultra-high pressure 360° dynamic joint. Background technique [0002] During the cutting process of the water jet formed by the cutting head of the ultra-high pressure water cutting machine, the position of the cutting head is always displaced, and the water pipe connected to the cutting head also moves accordingly. Because the water pipe is in a high-pressure environment, it is necessary to use a pressure-resistant metal pipe. Although such a pipe can withstand high pressure, the pipe itself is very rigid and produces a reaction force on the displacement of the cutting head, affecting the displacement of the cutting head and the final result. cutting...

AI Technical Summary

Problems solved by technology

Because the water pipe is in a high-pressure environment, it is necessary to use a pressure-resistant metal pipe. Although such a pipe can withstand high pressure, the pipe itself is very rigid and produces a reaction force on the displacement of the cutting head, affecting the displacement of the cutting head and the final result. cutting effect

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