Double-acting magneto-rheological pressure and flow control valve

Abstract

The invention discloses a double-acting magneto-rheological pressure and flow control valve which comprises an upper end cover and a lower end cover. The upper end cover and the lower end cover are arranged in a longitudinal symmetry manner, and a thrust shaft is slidably connected into a cavity formed between the upper end cover and the lower end cover; two cavities are formed in rooms among two ends of the thrust shaft, the upper end cover and the lower end cover, and an upper flow control cavity and a lower flow control cavity are respectively mounted in the two cavities; the upper end cover is fixed to the lower end cover by a piston, an upper auxiliary damping hole and a lower auxiliary damping hole are respectively machined on the upper end cover and the lower end cover, and an auxiliary channel which is communicated with the damping holes is arranged in an inner ring of the piston; and the opening of the auxiliary channel is determined by the sliding stroke of the thrust shaft. The double-acting magneto-rheological pressure and flow control valve has the advantages of high response speed and extremely wide bearing pressure range owing to fast yield strength variation response and wide range of magneto-rheological fluid. Besides, the double-acting magneto-rheological pressure and flow control valve is simple and compact in structure, convenient to manufacture and high in portability, and can be connected into an electronic control unit, so that a bidirectional flow can be intelligently and steplessly controlled.

Description

technical field [0001] The invention relates to a flow control valve, in particular to a magneto-rheological double-acting pressure flow control valve which realizes bidirectional flow control by controlling the opening of the valve. Background technique [0002] Common flow control valves usually control the flow of fluid by controlling the flow area of ​​the channel. Traditional flow control valves design multiple different flow areas through mechanical design, and control different flows through switching. The disadvantages are: high machining accuracy requirements and poor product consistency; switching requires the design of auxiliary structures, resulting in complex structures ; Once the design is completed, the flow control cannot be changed, and it is difficult to achieve stepless control. With the development of technology, the flow control valve is required to develop in the direction of miniaturization, intelligence and economy. This requires the control structur...

AI Technical Summary

Problems solved by technology

Traditional flow control valves design multiple different flow areas through mechanical design, and control different flows through switching. The disadvantages are: high machining accuracy requirements and poor product consistency; switching requires the design of auxiliary structures, resulting in complex structures ;Once the design is completed, the flow control cannot be changed, and it is difficult to achieve stepless control

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