Quick joint structure made of alloy steel material

Abstract

The invention relates to a quick joint structure made of an alloy steel material. The quick joint structure made of the alloy steel material comprises a shell, an outer ring, a plug, a shell joint body and a sealing device; the plug stretches into an inner cavity of the shell and is in sliding connection with the shell; a shell valve sleeve, a shell valve core and a shell lining are arranged in the inner cavity of the shell; the shell lining is in limited sliding connection with the front end of the inner cavity of the shell; a limiting step is arranged on the outer sleeve wall of the shell valve sleeve; the front end port of the shell valve sleeve is dynamically connected with a rod head of the shell valve core correspondingly; a rod seat of the shell valve core is in positioning connection with a joint body; the front end port of the shell valve sleeve and the rod head of the shell valve core are in sliding connection with the shell lining; the shell and the plug are made of 3Cr13 alloy steel; and the 3Cr13 alloy steel has the characteristics of pressure resistance, wear resistance and the like, and the plug and shell are not liable to damage through pull when often moving, so that the whole service life of the joint body is prolonged.

Description

technical field [0001] The invention relates to the technical field of pipe joints, in particular to a quick joint structure made of alloy steel. Background technique [0002] The structure of the pipe joint mainly includes a female socket and a male plug. The quick connection is realized by the insertion of the male plug and the female socket. The Chinese patent ZL201320402302.2 "an improved high-pressure quick pipe joint" can use an elastic pipe when high pressure is formed in the outer pipe. The cooperation of the clamp and the locking hoop transforms the axial disengagement force caused by the high pressure in the tube into the radial clamping force of the elastic tube clamp on the connecting cannula, and the greater the pressure in the tube, the stronger the clamping force of the elastic tube clamp on the connecting cannula Tight, the more reliable the connection and sealing of the pipe joint, the better the high-pressure performance, thus completely solving the problem...

AI Technical Summary

Problems solved by technology

However, this patent has the problem that the connecting cannula is not easy to be pulled out quickly. The reason is that once the elastic tube clip is locked by the locking hoop under high pressure, it bites the connecting cannula. In particular, tooth marks are provided on the bite. Make it difficult to pull out the connecting cannula, thus affecting the effect of quick pull out

[0003] Moreover, most of the existing quick connector bodies are made of 45# steel, and the connector body is required to be movable, and the characteristics of the 45# steel material determine that the plug and the housing are easily strained under the action of pressure during regular activities, so The overall use time of the joint body is relatively short, causing unnecessary losses and inconvenience to the merchants

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