An internal drive feedback type digital reversing valve

A reversing valve and feedback technology, applied in valve details, valve devices, multi-way valves, etc., can solve problems such as hydraulic shocks, achieve the effects of alleviating hydraulic shocks, reducing hydraulic shocks, and improving stability

Inactive Publication Date: 2019-04-26
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides an internal drive feedback digital directional valve, which solves the problem of serious hydraulic shock when the electromagnetic directional valve changes direction or speed in the prior art

Method used

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  • An internal drive feedback type digital reversing valve
  • An internal drive feedback type digital reversing valve
  • An internal drive feedback type digital reversing valve

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Embodiment Construction

[0025] The embodiments of the present application provide an internal drive feedback digital directional valve, which solves the problem of severe hydraulic shock in the prior art when the electromagnetic directional valve changes direction or speed.

[0026] The technical solution of the embodiment of the present application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0027] An internal drive feedback digital reversing valve, including: a stepping motor, a transmission gear set, a rack and pinion pair, a reversing valve, a return spring, and a magnetostrictive displacement sensor;

[0028] The reversing valve includes a reversing valve body and a reversing valve spool;

[0029] The transmission gear set is composed of a main shaft gear, a trapezoidal gear, and a driven gear meshing with each other;

[0030] The stepping motor is connected with the main shaft gear, the driven gear is connected with the gear of the rack-and-pinion ...

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Abstract

The invention belongs to the technical field of digital reversing valves and discloses an inner drive feedback-type digital reversing valve. The inner drive feedback-type digital reversing valve comprises a stepping motor, a transmission gear set, a gear rack pair, a reversing valve body, a reset spring and a magnetostrictive displacement sensor. The transmission gear set is composed of a spindlegear, a trapezoidal gear and a driven gear in a mutually engaged mode, the stepping motor is connected with the spindle gear, and the driven gear is connected with a gear of the gear rack pair; the first end surface of a reversing valve core is connected with a rack of the gear rack pair, and the second end surface of the reversing valve core is connected with the reset spring which is fixed to the reversing valve body through a spring support; and the magnetostrictive displacement sensor is fixed to the reversing valve body. According to the inner drive feedback-type digital reversing valve,the problem that in the prior art, when reversing or speed conversion occur to an electromagnetic reversing valve, hydraulic impact is serious is solved, and the technical effect of reduction of hydraulic impact is achieved accordingly.

Description

technical field [0001] The invention relates to the technical field of digital directional valves, in particular to an internal drive feedback digital directional valve. Background technique [0002] With the rapid development of automation control technology and microelectronics technology, people pay more and more attention to the digital control of electro-hydraulic system, and hydraulic digital valves are produced under such circumstances. According to different control methods, it can be divided into indirect and direct digital valves. Indirect digital valves use digital signals as control signals and analog signals as drive signals; direct digital valves can be directly connected to computers without digital-to-analog conversion. Compared with proportional valves and servo valves, direct digital valves have the characteristics of simple structure, low cost, good manufacturability, small external interference, low control power, stable and reliable work, good repeatabi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K11/065F16K31/04F16K31/54
Inventor 郑华生朱学彪卢云丹
Owner WUHAN UNIV OF SCI & TECH
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