Pipe fitting quick connection device

Abstract

The invention provides a pipe fitting quick connection device, and belongs to the technical field of pipe fitting connectors. The pipe fitting quick connection device solves the problem that sealing performance of an existing pipe fitting quick connection device is poor. The device comprises an outer cylinder with a connection channel, the inside of a cavity of the outer cylinder is provided with a sealing ring assembly and a clamping assembly, the clamping assembly is located on the outside of the sealing ring assembly, a supporting cylinder is coaxially arranged in the outer cylinder, the inner end of the supporting cylinder is provided with a cylindrical positioning portion bent outwards, the outer side wall of the positioning portion is connected with the inner side wall of the outer cylinder, the outer side wall of the supporting cylinder is provided with an annular groove, and a sealing part is embedded in the annular groove. Due to the fact that the pipe fitting quick connection device is provided with the supporting cylinder, stability of a pipe fitting can be improved when the device is inserted into the pipe fitting with a thin pipe wall or a soft pipe body; the supporting cylinder is provided with the sealing part, and accordingly a sealing function is performed on the inner side wall of the pipe fitting; due to combined action of the sealing part, a flat sealing ring and a sealing ring, the pipe fitting is sealed in multiple ways, and stability of the device is improved when the device works.

Description

technical field [0001] The invention belongs to the technical field of pipe fittings and relates to a pipe fitting quick connection device. Background technique [0002] The application of quick connectors makes the pipeline connection technology more mature, especially the in-line quick connectors, which are widely used in daily life and industrial production equipment. Compared with the connection by hot melter, the in-line quick connector has high connection strength and good shock resistance. When the connection part is buckled at one time, the greater the pressure in the pipe, the inner diameter of the pipe will expand and the buckle will be tighter. It avoids the possibility of loosening and water leakage, and does not require hot melting, which avoids the laborious construction of on-site welding operations. Its installation is quick, saving time, electricity and labor. [0003] For example, the Chinese invention patent application (application number: 201210126208.9...

AI Technical Summary

Problems solved by technology

[0004] The ball valve with quick plug-in connection is suitable for pipe fittings with thinner pipe wall or softer pipe body, but because the inner guide sleeve and the valve cover are separated, when the pipe fitting is inserted into the ball valve, the fluid in the pipe fitting is easy to flow from the inner guide sleeve and the valve cover. Outflow between the caps, the sealing effect is not good

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