Flexible seal self-locking socket and spigot joint

Abstract

The invention discloses a flexible seal self-locking socket and spigot joint. The flexible seal self-locking socket and spigot joint comprises a socket, a spigot and a seal ring; wherein after the spigot is assembled on the socket, first annular protrusions and second annular protrusions from self locking, and gaps are arranged between the first annular protrusions and the second annular protrusions, and a socket pipe body can deflect relative to a spigot pipe body.

Description

technical field [0001] The invention relates to the technical field of pipeline joints, and more specifically, the invention relates to a flexible sealing self-locking socket joint. Background technique [0002] With the further development of urbanization and the gradual improvement of rural living conditions, the demand for public infrastructure and household water supply and drainage has further increased, which is inseparable from construction work such as pipeline installation and maintenance. [0003] The reinforced concrete pipe interface of the socket interface is not tensile, the water-stop performance is not high, the pipe is heavy, the corrosion resistance, and the smoothness are lower than HDPE (high-density polyethylene) solid-wall pipes, so HDPE solid-wall pipes have broad applications. market application prospects. In the installation and maintenance of pipelines, such as in the non-excavation construction of drainage pipelines, in many cases, there is not en...

AI Technical Summary

Problems solved by technology

These pipeline interface methods have the following disadvantages in municipal pipeline excavation construction and non-excavation construction: 1) The hot-melt butt joint requires a certain site space, and can only be constructed after the butt joint is completed. It is not suitable for excavation construction and is not suitable for In-well top-drawing construction; 2) The hot-melt butt joint will form an inward flanging, which needs to be removed; 3) The electric hot-melt connection is dangerous in places with water, which is not convenient for construction; 4) The electric hot-melt connection is easy to collapse the pipe during welding, Leakage occurs; 5) The connection strength of the heat shrinkable tape is slightly low, and the large-diameter pipe is heated unevenly, which is inconvenient; 6) The clamp connection is not suitable for non-excavation construction; 7) The integrity of the pipe connection is not strong, and the sealing performance is poor; 8) The pipe joints are easy to disjoint, and the ability to withstand tension and vibration is limited

The HDPE solid-wall short pipe joint with socket interface is cut out at one end with a socket, and the other end is cut with a socket, and the sealing ring is used to seal and stop water. Pull-out resistance, although it can be used for non-excavation repair, but it is easy to get out of joint and cannot be used for pull-top construction

[0006] In the non-excavation construction and non-excavation repair of municipal drainage pipelines, a simple interface HDPE solid-wall pipe joint that can be connected in a small space with convenient connection, good airtight performance, and tensile resistance is also needed, which is convenient for inspection wells. Or run the pipe in the working well and jack into the inside of the original pipe to realize the replacement, but the pipes with the above existing interface methods are not applicable

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