Movable joint of flat-wall pipe

Abstract

The invention provides a movable joint of a flat-wall pipe, and belongs to the technical field of mechanical engineering or buildings. The movable joint solves the technical problems that existing pipe joints are complex in structure and poor in sealing performance. The movable joint comprises a joint body with an external thread at one end, and a seal ring and a locking nut are connected to the end, provided with the external thread, of the joint body in a sleeving mode, and a locating surface extending outwards in the radial direction of the joint body is arranged in the middle of the joint body and is provided with locating columns parallel with the axis of the external thread; the seal ring is provided with locating holes parallel with the axis, and the locating columns penetrate through the locating holes and extend into the seal ring; and the seal ring is arranged between the locating surface and the locking nut and is attached to the locating surface. According to the movable joint, the external-to-internal self-locating structure and the sealing mode combining external sealing and internal sealing are adopted, the structure is simple, the connection stability is good and the sealing performance is good.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering or construction, and relates to a pipe joint, in particular to a movable joint of a flat-wall pipe. Background technique [0002] Inspection wells are set up for the convenience of maintenance and installation of power supply, water supply, drainage, sewage discharge, communication, cable TV, gas pipes, street lamp lines, etc. of urban underground infrastructure; they are generally located at pipeline intersections, turnings, pipe diameters or slopes Changes, as well as at certain distances on straight pipe sections, are ancillary structures that facilitate regular inspections. [0003] With the rapid development of urbanization, the application of inspection wells is becoming more and more extensive. According to the number and angle of connections, there are straight-through wells, three-way wells, four-way wells, and 90-degree elbow wells. In order to adapt to various drainage c...

AI Technical Summary

Problems solved by technology

The main body of the disclosed joint extends from the outer wall of the inspection well to the inner wall, which greatly reduces the difficulty of construction and improves work efficiency; however, the joint of this structure is installed from the outside to the inside, which is suitable for water supply. If the water pressure in the wellbore is too high or the application When draining water, the direction of water pressure from the inside to the outside cannot guarantee the stability of the connection between the joint and the wellbore, as well as the tightness of the connection between the joint and the wellbore

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