Liquid control throttle oil changing valve

The utility model relates to a liquid control throttle oil changing valve, which belongs to the technical field of fluid driving and controlling. The liquid control throttle oil changing valve is composed of a valve body, a valve core and a piston. The valve core in the valve body is contacted with the piston. The valve core is connected with a spring, the spring is connected with a spring pulling base, and the spring pulling base is connected with a regulating bolt. The valve core cooperates with the valve pocket to separate the connecting port of the hydraulic hose assembly and the high temperature dubbing return port. Two sides of the piston are respectively connected with control ports. The valve body is provided with an easing valve, the return port of the easing valve is communicated with the high temperature dubbing return port, and the oil inlet of the easing valve and the oil inlet of the accessory system are connected with the connecting port of the supercharger. The easing valve is the structure of valve core and valve pocket, and the valve core is connected with the spring, the spring pulling base and the regulating bolt. The liquid control throttle oil changing valve integrates the easing valve, the pilot controlled check valve and the function of throttling as integration, so the oil is not easy to leak. The fluid pressure throttling is easy to adjust, and convenient for installation and maintenance.