Stainless steel elbow with threaded opening lining

Abstract

The invention provides a stainless steel elbow with a threaded opening lining, and belongs to the technical field of drinking water pipeline connecting piece manufacturing. The stainless steel elbow with the threaded opening lining comprise an outer sleeve and a lining layer, wherein the outer sleeve is of a circular pipe elbow structure; the lining layer is arranged in the outer sleeve in a sleeved mode, and a filling layer is arranged between the lining layer and the outer sleeve; the lining layer is a stainless steel elbow; the inner walls of the two ends of the outer sleeve are each provided with a threaded connector. an elastic sealing ring is further arranged at the threaded connector; the section of the sealing ring is in a right trapezoid shape; the two parallel edges of the righttrapezoid make contact with the outer wall of the lining layer and the inner wall of the outer sleeve respectively; and the bevel edge of the right trapezoid faces the threaded connector. The sealingring embedded in the edge of the outer sleeve and the edge of the lining layer is in butt joint with the end of the pipeline, the inclined butt joint face of the sealing ring provides an elastic installation space, and therefore the tolerance range generated in the installation and production process of pipe threads and pipe fittings is made up, the excellent pressure-bearing and corrosion-resisting performance is kept, the inner wall is smooth, and the passing resistance of fluid is reduced.

Description

technical field [0001] The invention relates to the manufacturing technology of drinking water pipeline connectors, in particular to a stainless steel elbow lined with a thread opening, which belongs to the technical field of metal product manufacturing. Background technique [0002] With the continuous improvement of people's living standards and quality of life, in order to better improve the quality of drinking water, so that people can use safer and healthier drinking water. At present, lined stainless steel pipes have been widely used in the market, but in the prior art, when the pipe fittings that match the lined stainless steel pipes are connected with the pipes, the end of the pipes cannot be tightly matched and sealed with the inside of the pipe fittings, causing the end of the pipes to corrode. resulting in drinking water pollution. [0003] Specifically, during the installation process of threaded pipe fittings in the prior art, the threads at the end of the pipe...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a new stainless steel elbow lined with wire mouth, which is snapped into a sealing ring with an inclined section through the interface between the inner lining layer and the outer casing to solve the problem of easy leakage and corrosion at the end of the pipe in the prior art question

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