Thin-wall metal pipe quick-locking connection structure

Abstract

The invention offers thin wall metal pipe fitting fast locking type bonded structure. It includes pipe fitting joint, pipe body, seal ring, external pressure screw cap and roof pressure ring. The pipe fitting joint is set pipe body inner shoulder-hole, convex annular and roof pressure ring inner shoulder hole. Its end out side is set screw thread external tapping. Pipe body cover is set in the pipe fitting joint. It has the advantages of high compressive strength, good seal performance, and low cost. And it can be mainly used in water supply, drinking water or conveyance of fluids industries.

Description

Technical field [0001] The present invention relates to a connecting structure of metal pipe fittings, and further to a quick-locking connection structure of thin-walled metal pipe fittings. Background technique [0002] In recent years, the pipeline manufacturing industry is gradually becoming prosperous. The use of traditional pipelines and their connectors is being refined step by step. The connection methods are even more varied, usually threaded or grooved; in order to achieve a firm, tight, and For the purpose of non-leakage, it is generally necessary to reprocess the end of the pipe, that is, to open the thread or groove at the port of the pipe so as to be connected with the internal thread or groove, which damages and weakens the strength of the pipe end Therefore, in the production of pipe fittings, because the thread teeth and grooves have a certain height or depth, the wall thickness of the pipe fittings needs to be reserved as a margin for processing the thread teeth ...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the pipeline manufacturing industry is gradually prospering. The use of traditional pipelines and their connectors is being refined step by step. The connection methods are full of tricks, usually with threaded connections or grooved connections; in order to achieve firm, tight, For the purpose of non-leakage, it is generally necessary to reprocess the end of the pipe fitting, that is, to open a hinged thread or groove at the end of the pipe fitting to cooperate with the internal thread or groove, which will damage and weaken the strength of the end of the pipe fitting , For this reason, when producing pipe fittings, since the thread teeth and grooves have a certain height or depth, the wall thickness of the pipe fittings needs to be reserved for processing the thread teeth or grooves, which causes the overall wall thickness of the pipe fittings to be much higher than The size set by the actual fluid pressure, that is, the actual required wall thickness, is precisely due to the design limitation of the connection structure, which requires the processed pipe fittings to have a certain strength, that is, to have a certain wall thickness. At this time, a large amount of pipe fitting materials are wasted, which virtually increases the material cost and raises the market price of the product. Moreover, the above connection methods are difficult to install, the construction process is relatively complicated, and the pipe fitting processing technology is complicated. These problems make traditional pipe fittings It is difficult for the connection structure to meet the rapidly changing market demand

[0003] In order to solve the problems of high cost, troublesome processing and difficult construction in the traditional pipeline connection structure, some thin-walled metal pipe fitting connection structures have appeared on the market. The connection structure is mainly compression type or ring pressure type. It greatly reduces the amount of steel used for pipe fittings and reduces waste. However, due to its own structural reasons, this type of connection structure has the following disadvantages: 1. This type of connection structure uses thin-walled metal pipe fittings, and adopts compression or ring compression connection methods. During construction, the thin-walled metal pipe fittings and the thin-walled metal pipe body are simultaneously squeezed and deformed to form the connection structure, so that the strength of the thin-walled metal pipe fittings and the thin-walled metal pipe body itself is destroyed and damaged, resulting in a firm connection 2. The compression or ring pressure connection method causes the pipe diameter to shrink and deform, which reduces the diameter of the pipe body and reduces the flow rate of the pipe body; 3. The compression or ring pressure connection The method of installation requires high technical requirements, is difficult, and is not easy to master. If the installation is not in place, it is easy to cause the pipe body to loosen, leak, and not withstand pressure, which will reduce the service life of the pipe connection structure; 4. Clamping or ring pressure The original connection method is a one-time molding structure, which cannot be maintained and is not easy to remodel. Once quality problems or remodeling problems occur, it is not easy to solve; 5. The lines at the connection are not smooth, and the appearance is slightly rough and lacks aesthetic feeling; 6. Pipe fittings processing The process is more complicated and the design is backward

[0004] The above existing problems have gradually exposed their fatal shortcomings in practical applications, which will bring a lot of inconvenience to users over time

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