High-tightness quick plug connector

Abstract

The invention discloses a high-tightness quick plug connector. The high-tightness quick plug connector comprises a male head and a female head, wherein the male head and the female head are axially assembled in an interlocking or disengaging relationship; the rear section of a flow passage in a male head shell is ladder shaped; the rear section of the flow passage is sequentially divided into a first hole section, a second hole section and a third hole section from left to right; the diameters of the first hole section, the second hole section and the third hole section are sequentially reduced; the first hole section and the second hole section are connected through a first inclined plane;the second hole section is connected with the third hole section through a second inclined plane; a main sealing ring and an auxiliary sealing ring are arranged at a valve rod head of a male valve core in the flow passage; and when a valve is closed, the auxiliary sealing ring abuts against the firstinclined plane, and the main sealing ring abuts against the second inclined plane. According to the connector, through cooperative matching of the main sealing ring and the auxiliary sealing ring, the sealing capability of the male head of the quick plug connector can be effectively guaranteed.

Description

technical field [0001] The invention relates to a high-tight quick plug-in connector. Background technique [0002] A quick connector such as the one shown in the publication number CN108758139A is more convenient to use in the current gas-liquid pipeline, but it is found during long-term use that when the valve core closes the male part, due to the male The internal gas-liquid pressure is relatively high, and a small amount of gas-liquid will still flow along the gap between the male valve core and the male housing, which will affect the sealing performance of the male head, especially at the moment of plugging and unplugging, due to The existence of impact force can easily cause the instantaneous pressure at the seal of the male head to exceed the set allowable value, resulting in a small amount of leakage, and in the long run, the sealing ability of the male head may be reduced, resulting in a large amount of gas-liquid leakage at the male head . Contents of the invent...

AI Technical Summary

Problems solved by technology

[0002] A quick connector such as the one shown in the publication number CN108758139A is more convenient to use in the current gas-liquid pipeline, but it is found during long-term use that when the valve core closes the male part, due to the male The internal gas-liquid pressure is relatively high, and a small amount of gas-liquid will still flow along the gap between the male valve core and the male housing, which will affect the sealing performance of the male head, especially at the moment of plugging and unplugging, due to The existence of impact force can easily cause the instantaneous pressure at the seal of the male head to exceed the set allowable value, resulting in a small amount of leakage, and in the long run, the sealing ability of the male head may be reduced, resulting in a large amount of gas-liquid leakage at the male head

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