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Switching valve for prolonging response time

A response time, valve opening and closing technology, applied in sliding valves, valve devices, engine components, etc., can solve the problems of uncontrollable response time, increase response time, and fast opening and closing valve response time, so as to ensure accuracy and avoid energy. Impact, improve service life effect

Active Publication Date: 2019-08-16
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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  • Switching valve for prolonging response time

Examples

Experimental program
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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 a switching valve for prolonging response time, and solves the technical problems of quicker response time and incapability of controlling the response time of a switching valve in the prior art. The switching valve for prolonging the response time comprises a valve body; the valve body is provided with a hydraulic channel and an oil inlet and an oil outlet communicating with the hydraulic channel; an end cover and a base plate are arranged at two ends of the hydraulic channel; a valve element matched with the hydraulic channel is arranged by movably penetrating throughthe end cover; the radius of the valve element is smaller than the radius of the hydraulic channel; the valve element is provided with a delay response piston matched with the inner diameter of the hydraulic channel; an axial small-diameter hole and a radial small-diameter hole communicating with each other are formed in the delay response piston; and an outer port of the axial small-diameter hole is towards the direction of the oil inlet. The switching valve not only can delay the response time, but also can control the response time, so that the negative energy impact on a hydraulic systemis effectively prevented, the stability of the hydraulic system is fully guaranteed, and the service life of the hydraulic system is prolonged.

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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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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