Quick butt joint

Abstract

The invention provides a quick butt joint which is simple in structure, convenient and quick to operate in jointing, and a male joint or a female joint can bear higher pressure before the jointing of the male joint and the female joint. The quick butt joint comprises the female joint and the male joint. The female joint comprises a female valve body which is provided with a fluid flow passage, a core sleeve is arranged inside the fluid flow passage, one end of a mandrel fixes a choke plug, the other end of the mandrel penetrates through the core sleeve, a sliding sleeve is arranged on a mandrel in a sleeved mode, an elastic element is arranged between the sliding sleeve and the female valve body or between the sliding sleeve and the core sleeve, and the elastic element enables the sliding sleeve to contact with the choke plug in a sealed mode and enables the mandrel to contact with the core sleeve in a sealed mode. The male joint comprises a male valve body which is provide with a flow passage, a valve core is arranged inside the flow passage, an elastic element is arranged between the male valve body and the valve core, and the elastic element enables the valve core to contact a valve base in a sealed mode. When one end of the male valve body is inserted into the female valve body, the male valve body pushes the sliding sleeve to move for a distance A, the valve core pushes the mandrel to move for a distance B, and B is smaller than A, so that sealed contact does not exist between the valve core and the valve base, or between the choke plug and the sliding sleeve, or between the mandrel and the core sleeve, and the fluid flow passage and the flow passage form an interconnected passage. Limiting steps are arranged in the fluid flow passage, a distance C between the limiting steps and the corresponding end of the mandrel is equal to B, and a positioning mechanism which limits the movement of the male valve body is arranged on the female valve body.

Description

technical field [0001] The technology relates to a joint, in particular to a high-pressure quick oil pipe joint. Background technique [0002] Quick butt joints are generally used for hose connections and generally include male and female connectors. When in use, just connect the male connector with the female connector. However, generally after the male connector and the female connector are docked, fluid can be introduced into the pipeline (usually a hose). Before the male joint and the female joint are butted, because the male joint or the female joint cannot bear pressure, the pipeline cannot pass fluid. In addition, the internal structure of the male joint and the female joint is relatively complicated in the existing quick butt joint. When the male joint and the female joint are butted, the operation of connecting the internal channels of the male joint and the female joint is cumbersome and the connection speed is slow. Thirdly, the sealing effect of the existing q...

AI Technical Summary

Problems solved by technology

In addition, the internal structure of the male joint and the female joint is relatively complicated in the existing quick butt joint joint. When the male joint and the female joint are docked, the operation of connecting the inner channel of the male joint and the female joint is cumbersome and the connection speed is slow.

Third, the sealing effect of the existing quick-joint joint is not good, and it is easy to cause fluid leakage

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