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Electrohydraulic servo valve

An electro-hydraulic servo valve and slide valve technology, applied in the field of servo valves, can solve the problems of high cost, high requirements on oil quality and cleanliness, complex structure of servo valves, etc., and achieve the effect of simple structure and lower production cost.

Inactive Publication Date: 2017-10-20
ZHENJIANG SILIAN MECHATRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the structure of the traditional servo valve is relatively complicated, the cost is high, and the quality and cleanliness of the oil are high, these shortcomings need to be overcome

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The present invention will be further described below in conjunction with embodiment.

[0011] The invention provides an electro-hydraulic servo valve with simple structure, which is easy to manufacture, has low production cost and is convenient for batch production.

[0012] An electro-hydraulic servo valve is composed of a torque motor, a nozzle baffle type hydraulic amplifier, and a slide valve type power stage. The torque motor is an electric-mechanical conversion element, which is composed of a permanent magnet, a magnetic conductor, a coil, a spring tube, a baffle and an armature.

[0013] The nozzle baffle type hydraulic amplifier has the functions of machine-hydraulic conversion and power amplification. The annular area between the baffle and the nozzle includes two fixed orifices, one oil return orifice and two nozzle baffles, which together form a variable joint. The orifice, the nozzle, the fixed orifice and the baffle constitute the nozzle baffle valve, whi...

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PUM

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Abstract

The invention provides an electrohydraulic servo valve which comprises a moment motor, a spray nozzle baffle type hydraulic amplifier and a sliding valve type power stage. The moment motor is an electric-mechanical conversion element and is composed of a permanent magnet, a magnetizer, a coil, a spring pipe, a baffle and an armature; and the spray nozzle baffle type hydraulic amplifier comprises variable orifices and is formed by two fixed orifices, one oil return orifice and two spray nozzle baffles. The electrohydraulic servo valve is simple in structure, the production cost is effectively reduced, and the electrohydraulic servo valve is suitable for batched production.

Description

technical field [0001] The invention relates to a servo valve, in particular to an electro-hydraulic servo valve. Background technique [0002] The electro-hydraulic servo valve is an electro-hydraulic conversion and power amplification component with high sensitivity and fast performance, and can convert a small electrical signal (such as 10 mA) into a large hydraulic power (such as dozens of horsepower or more) , can drive many types of loads. In the servo system, compared with the electrical and pneumatic actuators, the hydraulic actuator has the characteristics of good speed, high output power per unit weight, stable transmission, and strong anti-interference ability. On the other hand, electrical components are often used in the transmission of signals and correction characteristics in servo systems. Therefore, modern high-performance servo systems also use electro-hydraulic methods, and servo valves are essential components of such systems. [0003] However, the str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
CPCF15B13/02
Inventor 郑刚郑亚飞孙陶明
Owner ZHENJIANG SILIAN MECHATRONIC TECH