Fast connection pipe joint structure

Abstract

The invention relates to a fast connection pipe joint structure which comprises a joint seat, a locking screw sleeve, an inner clamping sleeve and a sealing ring; a tubular part is arranged at the front end of the joint seat; circumferential flanges are arranged on the outer circumference of the tubular part at intervals; the inner clamping sleeve is sleeved outside the tubular part; circumferential flanges are arranged on the inner wall of the inner clamping sleeve; a gap is arranged between the inner circumference wall of the inner clamping sleeve and the outer circumference of the tubular part; a conical surface is arranged at the front end of the outer wall of the inner clamping sleeve; a conical surface is arranged on the inner wall of the locking screw sleeve; the rear end of the locking screw sleeve is connected with the joint seat; a gap is arranged between the inner wall of an outlet at the front end of the locking screw sleeve and the outer circumference of the front end of the tubular part; after being inserted in and connected, a connection pipe is compressed by the locking screw sleeve between the inner clamping sleeve and the tubular part of the joint seat to play an anti-falling role; the circumferential flanges at the inner side of the inner clamping sleeve and the outer side of the tubular part can be reliably sealed and connected with one another under the situation that the smaller pressure is applied on the locking screw sleeve. Therefore, the strength requirements for components are reduced, and a tightening tool is eliminated, and the connection is convenient and quick.

Description

Technical field: [0001] The invention relates to pipeline transportation technology, in particular to pipeline connectors, especially a quick-connect pipe joint structure. Background technique: [0002] In the prior art, the quick-connect pipe joints of water pipes often adopt a structure in which two conical surfaces are extruded with each other. In order to achieve reliable sealing and connection, a relatively high pressure needs to be maintained between the conical surfaces, which is easy to cause the inner conical surface Fracture of nut, or connected straight pipe, or outer conical member. Especially in the connection of the water purifier, in order to ensure the water quality, the pipes are all made of food-safety-certified plastic components, which are not strong enough and are more likely to break and leak. Invention content: [0003] The object of the present invention is to provide a quick-connect pipe joint structure. The quick-connect pipe joint structure solv...

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