Flush-resistant pneumatic quick-change connector

Abstract

The invention discloses a flush-resistant pneumatic quick-change connector and an air entraining plug in matched use thereof, wherein the flush-resistant pneumatic quick-change connector comprises an air inlet connecting sleeve, an air inlet seal ring, a seal check ring, a valve core, a slide sleeve spring, a disassembly slide sleeve, a locking steel ball, a protective shaft sleeve, an inner slide sleeve with a shoulder, an air outlet seal ring, an inner sleeve spring, a valve core spring, a radial sleeve and a positioning ball. The three main parts, namely the air inlet connecting sleeve, the valve core and a mobile slide sleeve, have the advantages of simple structure and good machining process; the machining can be finished by adopting a conventional low-cost mechanical machining method; the structure of the air entraining plug is extremely simple, and the machining cost is low; the flush-resistant pneumatic quick-change connector and the air entraining plug are in matched use, have the quick-change function and can prevent the flush phenomenon from occurring when the air entraining plug is detached; and all the functions of the safety pneumatic quick-change connector in the Chinese patent CN201152427Y can be realized, and the cost is 30-50% lower than that of the safety pneumatic quick-change connector.

Description

Technical field: [0001] The invention relates to a pneumatic quick-change joint widely used for quick connection of gas delivery pipelines. Background technique: [0002] Pneumatic quick-change joints are widely used in various fields as an essential connection part for quick connection of gas pipelines. In Chinese patent CN201152427Y (patent number ZL2008200001837.8), a "safety pneumatic quick-change joint" is disclosed, which includes a joint body, A socket connected to one end of the connector, a movable seat inside the socket, a set of first-stage push seats inside the movable seat, and a socket set on the periphery of the socket , a first spring supported on the inside of the first section of the push seat and the movable seat, a second spring supported on the inside of the first section of the push seat and the movable seat, and a support on the position control collar and the joint body The third spring is equipped with a large number of large steel balls and small s...

AI Technical Summary

Problems solved by technology

However, its structure is complex, and the processing technology of the parts is very high, which is difficult to meet with the conventional processing technology. Especially for the three parts of the socket, the position control collar and the movable seat, the processing technology is not ideal, the processing cost is high, and the user Difficult to accept

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