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An On-Off Valve With Increased Response Time

A response time, valve opening and closing technology, applied in valve devices, sliding valves, mechanical equipment, etc., can solve the problems of increasing response time, uncontrollable response time, and fast opening and closing valve response time, avoiding energy impact and ensuring accuracy. performance, improve service life

Active Publication Date: 2021-03-02
HENAN AEROSPACE HYDRAULIC & PNEUMATIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the shortcomings in the above-mentioned background technology, the present invention proposes an on-off valve with increased response time, which solves the technical problem that the on-off valve response time is too fast and the response time cannot be controlled in the prior art

Method used

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  • An On-Off Valve With Increased Response Time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, a kind of switch valve that increases response time, as figure 1 As shown, it includes a valve body 2, the valve body 2 is provided with a hydraulic passage 10 and an oil inlet 11 and an oil outlet 12 communicating with the hydraulic passage 10, and the two ends of the hydraulic passage 10 are respectively provided with an end cover 3 and a bottom plate 1. Hydraulic oil can enter the hydraulic channel 10 of the valve body 2 through the oil inlet 11 , and then flow into the connected hydraulic system through the oil outlet 12 . Sealing rings 5 ​​are provided between the valve body 2 and the end cover 3 and between the valve body 2 and the bottom plate 1 to effectively avoid oil leakage.

[0016] A spool 4 is movable through the end cover 3 and is movably plugged with the hydraulic passage 10. A sealing ring 5 is provided between the spool 4 and the end cover 3, which effectively ensures that the spool 4 slides along the hydraulic passage 10. sealing perfor...

Embodiment 2

[0018] Embodiment 2, an on-off valve with increased response time, the oil inlet 11 is set close to the end cover 3, the oil outlet 12 is set close to the bottom plate 1, and the end of the valve core 4 close to the bottom plate 1 is set with the bottom plate 1 back-moving spring 9 connected at the top. One end of the return spring 9 is sheathed on the valve core 4 and abuts against the rear end surface of the delay response piston 8 , and the other end of the return spring 9 abuts against the inner end surface of the bottom plate 1 .

[0019] When no external force acts on the spool 4, the small radial hole 13 is located between the oil inlet 11 and the oil outlet 12 under the action of the return spring 9, and the oil inlet 11 and the oil outlet 12 cannot Connected, the switch valve is closed. When the spool 4 is squeezed by external force, the return spring 9 shrinks, and the radial small-diameter hole 13 communicates with the oil outlet 12, and the pressure in the hydraul...

Embodiment 3

[0021] Embodiment 3, a switch valve with increased response time, the axial small-diameter hole 7 is a through hole through the delay response piston 8, and the high-pressure oil in the oil inlet 11 can flow into the cavity where the return spring 9 is located through the through hole body, thereby providing damping.

[0022] The valve body 2 is provided with an oil return port 14 which communicates with the hydraulic channel 10 and is located between the delay response piston 8 and the bottom plate 1, and the oil return port 14 is provided with a damping plug 15 for controlling the oil return rate , The damping plug 15 is provided with a throttling channel connected to the oil return port. By changing the size of the throttling channel of the damping plug 15, the magnitude of the damping provided can be controlled, thereby conveniently adjusting the speed of the response time.

[0023] Other structures of this embodiment are the same as those of Embodiment 2.

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Abstract

The invention discloses an on-off valve with increased response time, which solves the technical problem that the on-off valve has too fast response time and cannot control the response time in the prior art. The invention includes a valve body, the valve body is provided with a hydraulic channel and an oil inlet and an oil outlet connected with the hydraulic channel, the two ends of the hydraulic channel are respectively provided with an end cover and a bottom plate, and the movable through end cover is provided with a hydraulic channel Cooperating spool, the radius of the spool is smaller than the radius of the hydraulic channel, the spool is provided with a delay response piston matching the inner diameter of the hydraulic channel, and the delay response piston is provided with interconnected axial small-diameter holes and diameters To the small-diameter hole, the outer port of the axial small-diameter hole faces the direction of the oil inlet. The invention can not only delay the response time of the switch valve, but also control the response time, effectively avoid negative energy impact on the hydraulic system, fully ensure the stability of the hydraulic system, and improve the service life of the hydraulic system.

Description

technical field [0001] The invention relates to the technical field of on-off valves, in particular to an on-off valve with increased response time. Background technique [0002] In the traditional hydraulic system, when the switch valve is in the reversing operation, the command action of each bit has two working states: open and closed. During the switching process of the working state, the pressure build-up time is usually within 1s, and some can reach Within 1ms, but at the same time when the pressure is quickly established, it will cause a negative energy impact on the hydraulic system behind the valve. This impact will not only cause system instability, but also adversely affect the service life of other components, increasing the maintenance of the hydraulic system expenditure. Therefore, in general applications that do not need to build up pressure quickly, system users often hope that the opening speed of the switching valve, that is, the response time of the valve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K3/24F16K3/32
CPCF16K3/24F16K3/32
Inventor 任威刘强张振炎赵芳陈浩李通赵鹏胡飞强陈志鹏郝振兴
Owner HENAN AEROSPACE HYDRAULIC & PNEUMATIC TECH
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