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High-speed hydraulic reversing slide valve

A hydraulic and high-speed technology, applied in the field of hydraulic devices, can solve the problems of difficult processing of the valve core, easy heating of the electromagnet coil, thrust and limitation, etc., and achieve the effect of easy processing, manufacturing and assembly, and convenient digital control

Inactive Publication Date: 2014-12-03
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional high-speed reversing valve uses an electromagnet to drive the spool to move. Because the electromagnet coil is prone to heat and the thrust is limited, it has certain limitations in high-power applications.
Although the rotary valve driven by the motor to rotate the spool can obtain a higher reversing frequency, the spool is not easy to process and is suitable for small flow occasions

Method used

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Embodiment Construction

[0018] The present invention will be further described below with reference to the drawings and embodiments.

[0019] See figure 1 with figure 2 , The present invention includes a valve body 1, a slide valve core 2 arranged in the valve body 1, and a motor 5; the valve body 1 is provided with an oil inlet P, a first oil outlet A, a second oil outlet B, and an oil return Port T, the slide valve core 2 is provided with a first shoulder 2-1, a second shoulder 2-2, and a third shoulder 2-3 that are used to realize the connection or disconnection of each oil port under the cooperation of the push rod 8. . The valve body 1 is provided with a flow passage 10 for connecting the first oil outlet A and the oil return port T. A motor seat 9 for supporting the motor 5 is fixed on the end surface on one side of the valve body 1. The output shaft of the motor 5 is connected to the central axis of the upper end of the rotary disc 7 through a coupling 6, and the lower end of the rotary disc 7 ...

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Abstract

The invention discloses a high-speed hydraulic reversing slide valve which comprises a valve body, a slide valve core, a reset spring, a cover plate, a variable speed motor, a coupler, a rotary disc equipped with an eccentric shaft, a push rod and a motor base, wherein the reversing valve is driven by a servo motor or a variable frequency motor and is convenient to control, and the reversing frequency of the reversing valve can be adjusted steplessly; and the motor output rotational motion is converted into linear reciprocating motion by means of a slider-crank mechanism, and the reversing slide valve and the reset spring push the valve core to move so as to switch opening and closing of a valve port. Compared with an ordinary electromagnetic valve, the valve has the advantages of large valve core push force, high response speed, sensitivity in action and the like; with adoption of a slide valve core structure, manufacture and assembly are facilitated; and the rotating speed of the motor can be adjusted steplessly, the valve can have a very high reversing speed, and the slide valve is particularly suitable for the application occasion requiring high-speed reversing of an actuator.

Description

Technical field [0001] The invention belongs to the technical field of hydraulic devices, and relates to a fluid pressure control element, in particular to a high-speed hydraulic reversing slide valve. Background technique [0002] As a new type of hydraulic control element, high-speed directional valve plays an important role in important engineering fields such as actuator motion control and high-power high-frequency excitation. Compared with the traditional directional valve, the high-speed directional valve has short switching time and high commutation frequency, which is more suitable for the application needs of high-precision electro-hydraulic control system. Compared with the electro-hydraulic servo valve, the high-speed directional valve has simple structure, low manufacturing cost, strong anti-pollution ability, and because it works in a fully open or fully closed state, it has low pressure loss and low energy consumption. Therefore, the high-speed reversing valve is o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
Inventor 施虎李小虎王新孟
Owner XI AN JIAOTONG UNIV
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