Connector of pipe

Abstract

The invention discloses a pipe joint, comprising a joint body (1) with a through hole; wherein the middle part of the through hole is provided with a locating step used to be located by a connecting pipe; the port of the through hole is a step hole which is small in the inside and large in the outside; a small hole is adaptive to the outer diameter of a connected pipe (2); a rubber gasket circular groove provided with a seal rubber gasket (3) is arranged on the inner wall of the small hole; the inner end of a large hole is provided with an elastic locking gear ring (4); and a locking mechanism and the opening mechanism of the elastic locking gear ring are arranged outside the elastic locking gear ring (4). The pipe joint has less parts, compact structure, simple manufacture technique and low cost, and can be manufactured by the materials like iron or aluminum alloy, plastics, and the like. When being manufactured and assembled, the pipe joint on a surface layer can not be destroyed, is reliably connected, and can be quickly mounted and dismounted.

Description

Technical field [0001] The invention relates to a pipe joint, in particular to a quick pipe joint made of iron or aluminum alloy or plastic. Background technique [0002] Pipe connections are generally through pipe joints. There are existing pipe joints that use internal tooth locking rings instead of threads to connect and lock pipes. For example, "A Direct Push Type Composite Pipe Joint" published in the Chinese Invention Patent Bulletin, the patent number is ZL00235720 .8, the publication number is CN2428674, which relates to aluminum-plastic composite pipes or PEX pipes. Its characteristics are: it is composed of a pipe body, an O-shaped sealing ring, a cone seat, an elastic gear ring, a movable cone sleeve and a fixed sleeve, an O-shaped sealing ring, The cone seat, the elastic ring gear, the movable cone sleeve and the fixed sleeve are sequentially contained in the pipe body hole. The connected aluminum-plastic composite pipe or PEX pipe is directly inserted into the hole, ...

AI Technical Summary

Problems solved by technology

[0003] However, this technical solution has the following disadvantages: one is that there are many components and the structure is more complicated, resulting in higher manufacturing costs; the other is that it can only be made of copper or stainless steel

This is because all parts of the pipe joint except the pipe fittings are contained in the pipe body. The way of containment is to roll or stamp the mouth of the pipe body, otherwise the inner parts will not be fixed and fall out, and the rolling Or the stamping of the bag mouth is the last process, after which no processing can be carried out. If the anti-corrosion treatment is carried out again, the material inside will be damaged, affecting the structure, and there will be problems that the pipeline cannot be sealed or locked. If the anti-corrosion treatment is carried out first, then the Wrapping the mouth will destroy the anti-corrosion layer, and the pipe joint will be corroded and damaged to affect the water quality, and the pipe joint made of plastic cannot be wrapped at the end

[0005] Also, as the "water or steam pipe connection device" (CN1324258C) disclosed in the Chinese Invention Patent Bulletin on July 4, 2007, and the invention patent "for liquid and gas pipe joints" disclosed on October 17, 2007 in the Invention Bulletin "(CN200961762Y), except that there are also the disadvantages that the multi-structure of the parts is complicated and the cost is high, the more important thing is that these two kinds of pipe joints all use threaded connectors (plug sleeves or outer rings, outer screw caps) to fix the lock Tighten the internal parts of the pipe joint, because the water pipe will vibrate under the action of the water flow or the pump valve, the threaded connection will become loose, and there will be a risk of loosening after long-term use

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