Shaft flow distribution proportional directional valve

Abstract

The invention relates to an axial flow distribution proportional directional valve which comprises an axial flow distribution valve body stator and an axial flow distribution valve element rotor rotatably installed in an inner cavity of the axial flow distribution valve body stator, and each of the axial flow distribution valve body stator and the axial flow distribution valve element rotor are respectively divided into four sealing areas which not communicate with one another through five sealing rings which are sequentially arranged from top to bottom. A working oil port A, a working oil port B, an oil supply port and an oil return port are sequentially formed in the side wall of the shaft flow distribution valve body stator from top to bottom, the working oil port A and the working oil port B communicate with corresponding external executing mechanisms respectively, and the oil supply port and the oil return port communicate with an external oil source respectively. An oil supply channel and an oil return channel are formed in the axial flow distribution valve element rotor in the axial direction. Compared with the prior art, the axial flow distribution proportional directional valve has the advantages of proportional linear axial flow distribution, non-contact abrasion reduction, high expansibility, high flow capacity, simplicity and convenience in maintenance and the like.

Description

technical field [0001] The invention relates to the technical field of fluid control, in particular to an axial distribution proportional reversing valve. Background technique [0002] The existing switch electromagnetic reversing valve, its double-coil electromagnetic valve structure mainly adopts lock nut + electromagnetic coil + core tube + spring + gasket + valve core + valve body + gasket + spring + core tube + electromagnetic coil + lock nut structure; the single coil solenoid valve structure mainly uses the structure of lock nut + electromagnetic coil + core tube + spring + gasket + valve core + valve body + gasket + spring + end cover. [0003] According to the type of power supply voltage, it can be divided into DC and AC. The power supply voltage value can be selected in a wide range. The movement of the valve core in the valve body is mainly supported by the hydraulic oil film. Oil pollution particles passing through the gap between the valve core and the valve bo...

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Problems solved by technology

[0003] According to the type of power supply voltage, it can be divided into DC and AC. The power supply voltage value can be selected in a wide range. The movement of the valve core in the valve body is mainly supported by the hydraulic oil film. Oil pollution particles passing through the gap between the valve core and the valve body will affect the smooth movement of the valve core. If the electromagnetic coil is in the energized state for a long time, the valve core is easy to get stuck, causing the actuator to fail; and due to the limited installation space, the size of the coil will limit its maximum holding force, which will affect its output power characteristics. The hydraulic force generated by the cavity formed by the spool / valve body also limits the flow capacity of conventional on-off electromagnetic reversing valves; and the size of the coil also affects the heat dissipation characteristics, and it is easy to burn the coil in a high-temperature or high-humidity environment. The plastic sealing process of the coil and the way of electrical connection affect the waterproof level

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