Cold-expanding, cold-hooping and self-sealing connecting type plastic floor heating pipe fitting

Abstract

The invention discloses a cold-expanding, cold-hooping and self-sealing connecting type plastic floor heating pipe fitting. The cold-expanding, cold-hooping and self-sealing connecting type plastic floor heating pipe fitting comprises a pipe (1), a pipe hoop (2) and a pipe fitting body (3), wherein the pipe is a cylindrical tubular plastic component; the pipe hoop is a cylindrical tubular plastic component provided with a clamping ring; the pipe fitting body is a hollow and thin-wall type pipeline-shaped plastic component; a part in which an inner chamber of the pipe fitting body is connected with the outside is called a joint; an embedding groove, a tapered platform, a retaining ring and a retaining rib are arranged in the outer wall of the joint from left to right. When the pipe fitting is in application, the pipe hoop sleeves one end of the pipe; an external expander is inserted into the inner chamber of the pipe at the end; the pipe and the pipe hoop are synchronously expanded and swelled so as to obtain an expanding end port; then the expander is drawn out; the joint of the pipe fitting body is inserted into the expanding end port; after the expanding end port is contracted, the pipe can be hooped and self-sealed so as to be fixedly connected with the pipe fitting body; an indoor hot water floor heating pipeline can reach the purposes of ensuring the connection sealing performance and the connecting strength as well as removing the potential risk of leaking through the cold-expanding and cold-hooping connection.

Description

technical field [0001] The invention relates to a plastic pipe fitting, in particular to a plastic floor heating pipe fitting used for laying indoor hot water and floor heating pipelines, which is self-sealing and connected by cold expansion and cold hoops. Background technique [0002] The indoor hot water floor heating pipeline is a pipeline facility that is laid under the indoor floor and used for indoor heating in winter through hot water circulation; the indoor hot water floor heating pipeline in the prior art uses plastic pipe fittings connected by thermal fusion, referred to as welding In the actual installation of pipelines and hot-melt pipe fittings, it is difficult to control the timing of fusion and insertion. If the operator does not connect in time, the fusion will cool down, resulting in poor sealing and fusion strength of the fusion. At that time, the pressure test was not easy to detect , the pipeline will leak after running for a period of time; the remedy i...

AI Technical Summary

Problems solved by technology

[0002] The indoor hot water floor heating pipeline is a pipeline facility that is laid under the indoor floor and used for indoor heating in winter through hot water circulation; the indoor hot water floor heating pipeline in the prior art uses plastic pipe fittings connected by thermal fusion, referred to as welding In the actual installation of pipelines and hot-melt pipe fittings, it is difficult to control the timing of fusion and insertion. If the operator does not connect in time, the fusion will cool down, resulting in poor sealing and fusion strength of the fusion. At that time, the pressure test was not easy to detect , the pipeline will leak after running for a period of time; the remedy is to pry open the floor to repair the pipeline leakage; therefore, the prior art has the problems and deficiencies that the sealing and strength of the connection are uncertain and prone to leakage

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