Valve assembly integrating functions of parking, closing and minimum pressure valve

Abstract

The invention discloses a valve assembly integrating functions of parking, closing and a minimum pressure valve. The valve assembly comprises a shell, a first oil way arranged at the left end of the shell, a second oil way and a third oil way arranged on the side face of the shell, a control cavity formed in the left side inside the shell, the first oil way communicates with the control cavity, aspring cavity formed in the right side of the interior of the shell and communicating with the third oil way, a valve, a lining, a valve seat, a spring, a sealing piece, a screw plug, and a second adjusting pad, wherein the valve, the lining, the valve seat, the spring, the sealing piece, the screw plug and the second adjusting pad are installed inside the shell, the valve is installed in the control cavity, the lining is arranged outside the valve in a sleeve mode, the sealing element compresses the valve and the left end surface of the lining, the valve seat is fixed on the right side of thelining and connected with the right end of the valve, the second adjusting pad is installed inside the right end of the valve seat, the screw plug is fixed in the spring cavity, and the left end of the spring is fixed on the second adjusting pad, and the right end is fixed on the inner wall of the screw plug. According to the valve assembly integrating functions of parking, closing and the minimum pressure valve, the number of valve assemblies is reduced, the complexity of a product is reduced, and the reliability of the product is improved.

Description

technical field [0001] The invention relates to a valve, in particular to a valve assembly integrating the functions of parking, shutting off and minimum pressure valve. Background technique [0002] In the existing fuel regulator or fuel metering device, in order to realize the function of parking, shutting down and ensuring the minimum pressure, three valves with different structures, the parking valve, the shut-off valve (locking valve) and the minimum pressure valve, need to work together, and rely on To switch the switching state of the valve, three valves are connected in series in the fuel regulator, and failure of any one of the valves will lead to partial failure of the fuel regulator or fuel metering device. Contents of the invention [0003] The object of the present invention is to provide a valve assembly with integrated stop, shut-off and minimum pressure valve functions, [0004] The valve assembly reduces the number of valve assemblies, reduces the complex...

AI Technical Summary

Problems solved by technology

[0002] In the existing fuel regulator or fuel metering device, in order to realize the function of parking, shutting down and ensuring the minimum pressure, three valves with different structures, the parking valve, the shut-off valve (locking valve) and the minimum pressure valve, need to work together, and rely on To switch the switching state of the valve, 3 valves are connected in series in the fuel regulator, any failure of any valve will cause partial failure of the fuel regulator or fuel metering device

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