Quick Couplings are a kind of joints that can be connected or disconnected without tools. Generally, these joints can be divided into quick joints for air, quick joints for oxygen fuel gas, quick joints for gas and liquid, quick joints for oil pressure, inert Quick connector for gas, quick connector for cooling water temperature oil, semiconductor quick connector, etc. However, the installation and disassembly of the Quick Couplings currently used is not convenient, and the sealing performance is not good. Therefore, after the installation, the pipe body cannot be turned arbitrarily.