A synchronous action shaft distribution proportional reversing multi-way valve

Abstract

The invention relates to a synchronous shaft flow distribution proportional reversing multi-way valve. The shaft flow distribution proportional reversing multi-way valve is a rotary valve structure, including a shaft flow distribution valve body stator and a shaft flow distribution valve body stator which is rotatably installed on the shaft flow distribution valve through clearance fit. The axial distribution valve core rotor in the body stator, the axial distribution valve body stator and the axial distribution valve core rotor are separated into three sealing areas by four sealing rings arranged in sequence from top to bottom, which is used to realize multi-channel The first sealing area for proportional reversing, the second sealing area for oil supply on-off and the third sealing area for oil return on-off. A plurality of slots are not connected to each other in the circumferential direction, and the second sealing area and the third sealing area are slotted in the entire circumferential direction. Compared with the prior art, the present invention has the advantages of axial flow distribution, strong expansibility, reduced rotor rotational resistance torque and radial force, no mechanical contact, reduced leakage and the like.

Description

technical field [0001] The invention relates to the technical field of fluid control, in particular to a synchronous axial distribution proportional reversing multi-way valve. Background technique [0002] For the conventional proportional directional valve, the structure of the proportional directional valve with double coil mainly adopts lock nut + proportional coil + core tube + spring + gasket + proportional valve core + valve body + gasket + spring + core tube + proportional The structure of coil + lock nut; the structure of single coil proportional reversing valve mainly adopts lock nut + proportional coil + core tube + spring + gasket + proportional valve core + valve body + gasket + spring + end cover Structure; its power supply is mainly driven by PWM signal, and the movement of the valve core in the valve body is mainly supported by hydraulic oil film. The spool is easy to get stuck, causing failure of the actuator; and due to the limited installation space, the s...

AI Technical Summary

Problems solved by technology

[0002] For the conventional proportional directional valve, the structure of the proportional directional valve with double coil mainly adopts lock nut + proportional coil + core tube + spring + gasket + proportional valve core + valve body + gasket + spring + core tube + proportional The structure of coil + lock nut; the structure of single coil proportional reversing valve mainly adopts lock nut + proportional coil + core tube + spring + gasket + proportional valve core + valve body + gasket + spring + end cover Structure; its power supply is mainly driven by PWM signal, and the movement of the valve core in the valve body is mainly supported by hydraulic oil film. The spool is easy to get stuck, causing failure of the actuator; and due to the limited installation space, the size of the proportional coil will limit the maximum holding force and affect the output power characteristics. The fluid flows through the cavity formed by the spool / valve body, so The generated hydraulic force also limits the flow capacity of the proportional reversing valve; the size of the proportional coil also affects the heat dissipation characteristics, and the coil is easy to burn in high temperature or high humidity environment, and the plastic sealing process of the coil and the way of electrical connection affect the waterproof level;

Images