Plane sealing type reversing valve

Abstract

The invention discloses a plane sealing type reversing valve which belongs to hydraulic control valves and is used for the fluid switching of a plurality of channels and solving the problem that the reversing valves at present are relatively large in reversing operation force, bad in anti-pollution capacity, high in processing difficulty and high in cost. The plane sealing type reversing valve comprises a lower valve seat, a support seat, a sliding block, an upper valve seat, a fixed valve element, a disc spring, a floating valve element, a sleeve, a ball screw assembly, a connection threaded sleeve, a push rod and a gear motor. According to the plane sealing type reversing valve, plane sealing is used, and the small rotary gear motor with the ball screw assembly is used for linear driving to drive the sliding block to move straightly and control the reversing of the oil path. The plane sealing type reversing valve is simple in structure, convenient in interface form and good in manufacturability, is capable of reliably realizing the sealing of the entire life cycle and ensuring the reliable reversing of the hydraulic systems, is suitable for standard and serial production and suitable for the high-temperature high-pressure severe environments and working conditions such as petroleum and natural gas extraction, and can be used for the fluid control of various hydraulic systems.

Description

technical field [0001] The invention belongs to a hydraulic control valve, in particular to a plane sealing reversing valve, which can be used for fluid control in high-temperature and high-pressure fields such as power plants and oil and gas exploitation. Background technique [0002] In the hydraulic system, the hydraulic control valve is widely used to control the fluid flow direction of the hydraulic system. The hydraulic control valve is generally composed of main parts such as the valve core, the valve body, and the driving mechanism. According to the difference in the sealing form of the valve core, the commonly used Hydraulic control valves can be divided into two categories: slide valves and poppet valves: [0003] (1) Spool valve: The valve core is cylindrical, and there are sinking grooves on the valve core and the valve body. The gap between the valve core and the valve body is sealed. The on-off of the spool valve is used to control the fluid; the spool valve h...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a planar sealing type reversing valve, which is used for multi-channel fluid switching, and solves the problems of the existing reversing valve with relatively large reversing control force, poor anti-pollution ability, difficult processing technology, and high cost.

Images