Quick-coupling quick-disassembling joint of pipe fitting

Abstract

The invention relates to a quick-coupling quick-disassembling joint of a pipe fitting. The quick-coupling quick-disassembling joint of the pipe fitting comprises an external seat, an internal plug and a sliding element, wherein the internal plug is movably arranged in the external seat and in sealing connection with the external seat through a sealing element, and the sliding sleeve for the passing of the internal plug is movably matched in the external seat; an annular boss is arranged on the outer side wall on the front part of the internal plug; at least two cantilevers are formed on the side wall of the external seat and compressed towards the external seat from top to bottom; the inner diameter formed by the surrounding of the lower ends of the cantilevers is less than the outer diameter of the annular boss of the internal plug; an opening is formed in the side wall of the external seat at the lower end of the cantilever; the distance between the lower end of the opening and the lower end surface of the cantilever is slightly greater than the height of the annular boss; the upper part of the sliding sleeve protrudes out of the external seat; and convex legs are arranged on the lower part corresponding to the cantilevers. The pipe fitting can be rapidly coupled when the annular boss is clamped by the cantilevers, and can be rapidly disassembled when the cantilevers are extruded by the sliding sleeve. The quick-coupling quick-disassembling joint is simple and compact in structure, the inner plug is prevented from shifting up and down in the external seat due to a result of the variation of water pressure, and the fatigue life of the joint is ensured.

Description

technical field [0001] The invention relates to a connection of pipe fittings such as water or steam passages, in particular to a quick-connect and quick-disconnect joint of pipe fittings. Background technique [0002] In various fields such as sanitary ware industry and industrial production, it often involves the connection of two pipelines such as water, gas or oil. Pipe fittings are a kind of accessories widely used in the connection between pipelines. Traditional pipe joints usually use threaded connections. However, threaded connections have problems such as difficult installation, hard to find installation tools, and unreliable sealing. In particular, it takes a lot of time to tighten each installation. [0003] At present, there are also many kinds of quick connectors with different structures, which can quickly connect two pipelines, but many of the existing quick connectors can only be installed or disassembled quickly, and cannot realize two-way quick installation...

AI Technical Summary

Problems solved by technology

Traditional pipe joints usually use threaded connections, but threaded connections have problems such as difficult installation, hard to find installation tools, and unreliable sealing, especially when it takes a lot of time to tighten each installation

[0003] At present, there are also many kinds of quick connectors with different structures, which can quickly connect two pipelines, but many of the existing quick connectors can only be installed or disassembled quickly, and cannot realize two-way quick installation and disassembly. Operation still brings great troubles to installation and maintenance; even such joints are bulky, and cannot be quickly disassembled for pipe fittings with limited assembly space; in addition, some quick-connect joints will appear up and down under the action of water pressure changes. Therefore, there will be a problem that the fatigue life of the pipe joint will be affected due to the large change of the waterway pressure

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