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Pneumatic high-speed switch valve driven by giant magnetostriction

A giant magnetostrictive, high-speed switching valve technology, applied in the direction of valve details, valve devices, engine components, etc., can solve the problem of small operating frequency and achieve the effects of suppressing adverse effects, simplifying the structure, and compacting the structure

Inactive Publication Date: 2011-08-17
ZHEJIANG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0003] After years of research and development, foreign traditional high-speed switching valve related technologies have been relatively mature, but due to the limitations of the traditional electromagnet-armature structure itself, its response frequency has always hovered below 1000Hz, and the possibility of further increasing the operating frequency is small

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  • Pneumatic high-speed switch valve driven by giant magnetostriction
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  • Pneumatic high-speed switch valve driven by giant magnetostriction

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, the present invention includes giant magnetostrictive actuators and switching valves, wherein:

[0028] 1) Giant magnetostrictive driver: including shell 3, drive coil 2, I-shaped coil skeleton 4, ejector rod 9, giant magnetostrictive rod 13, upper magnet guide 10, disc spring 12, magnetic guide sleeve 14, lower guide magnet 1 and adjusting bolt 15; the magnetic guide sleeve 14 is coaxially installed in the shell 3, and the magnetic guide sleeve 14 is equipped with an I-shaped skeleton 4 wound with a drive coil 2, and the small end of the lower magnet guide 1 is inserted into the center of the lower end of the I-shaped skeleton 4 In the hole, the lower end of the I-shaped coil bobbin 4 is threadedly connected to the large end surface of the step of the lower magnet gui...

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Abstract

The invention discloses a pneumatic high-speed switch valve driven by giant magnetostriction, comprising a giant magnetostrictive actuator and a switch valve. The giant magnetostrictive actuator comprises a shell, a driving coil, a coil framework, a mandril, a giant magnetostrictive rod, an upper magnetic conduction body, a dished spring, a magnetic conduction sleeve, a lower magnetic conduction body and an adjusting bolt. The switch valve comprises a valve port plate, a cantilever core plug, a cantilever cover, a valve cover and a sealing gasket, wherein a cantilever simultaneously plays roles of amplifying displacement and serving as a valve plug and can realize automatic resetting. Due to a rectangular variable cross-section beam structure with optimized size, the valve plug is stressed more reasonably, and the equivalent mass is reduced. The thermal expansion coefficient of the coil framework is close to that of a material for making the giant magnetostrictive rod, and thus the influence of temperature rise on valve port output is restricted. The invention has the remarkable characteristics of small size, large flow, high frequency response, stable working performance, and the like.

Description

technical field [0001] The invention relates to a pneumatic high-speed on-off valve, in particular to a pneumatic high-speed on-off valve driven by giant magnetostriction. Background technique [0002] Due to the advantages of low cost, strong anti-pollution ability, high repeatability, high power-to-mass ratio, and rapid switching, pneumatic high-speed switching valves have been widely used in industrial fields such as air-jet looms, packaging and assembly, and agricultural product color sorting systems. At the same time, the proportional control characteristics of the pneumatic high-speed switching valve in the PWM working mode make it possible to replace the expensive pneumatic proportional servo valve to realize the possibility of low-cost servo control. Since the essential feature of the on-off valve in the PWM control mode is a nonlinear discrete electrical-pneumatic converter, coupled with the compressibility of the gas itself, there is a serious pulsation phenomenon ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/06F16K31/12
Inventor 刘昊张峰陈剑锋陶国良郑培根刘琼
Owner ZHEJIANG UNIV
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