CN110131433B - Switching valve capable of increasing response time - Google Patents

Switching valve capable of increasing response time Download PDF

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Publication number
CN110131433B
CN110131433B CN201910459260.8A CN201910459260A CN110131433B CN 110131433 B CN110131433 B CN 110131433B CN 201910459260 A CN201910459260 A CN 201910459260A CN 110131433 B CN110131433 B CN 110131433B
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China
Prior art keywords
valve
response time
oil
diameter hole
valve core
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CN201910459260.8A
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Chinese (zh)
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CN110131433A (en
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
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Henan Aerospace Hydraulic and Pneumatic Technology Co Ltd
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Henan Aerospace Hydraulic and Pneumatic Technology Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/32—Means for additional adjustment of the rate of flow

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)

Abstract

The invention discloses a switching valve for increasing response time, and solves the technical problems that the response time of the switching valve is too fast and cannot be controlled in the prior art. The hydraulic pressure valve comprises a valve body, wherein a hydraulic channel, an oil inlet and an oil outlet which are communicated with the hydraulic channel are formed in the valve body, an end cover and a bottom plate are respectively arranged at two ends of the hydraulic channel, a valve core matched with the hydraulic channel is movably arranged through the end cover, the radius of the valve core is smaller than that of the hydraulic channel, a delay response piston matched with the inner diameter of the hydraulic channel is arranged on the valve core, an axial small-diameter hole and a radial small-diameter hole which are communicated with each other are formed in the delay response piston, and an outer port of the axial small-diameter hole faces the. The invention can delay the response time of the switch valve, and the response time can be controlled, thereby effectively avoiding negative energy impact on the hydraulic system, fully ensuring the stability of the hydraulic system and prolonging the service life of the hydraulic system.

Description

Switching valve capable of increasing response time
Technical Field
The invention relates to the technical field of switch valves, in particular to a switch valve capable of increasing response time.
Background
In a traditional hydraulic system, when a switch valve is operated in a reversing mode, command actions of each position have two working states of opening and closing, in the working state switching process, the pressure establishment time is usually within 1s, and some pressure can reach within 1 ms. Therefore, in general use situations where a rapid build-up of pressure is not required, system users often desire the speed at which the on-off valve opens, i.e., the response time of the valve, to be as slow as possible.
Disclosure of Invention
Aiming at the defects in the background art, the invention provides the switch valve for increasing the response time, and solves the technical problems that the response time of the switch valve is too fast and cannot be controlled in the prior art.
The technical scheme of the invention is realized as follows: the utility model provides an increase response time's ooff valve, includes the valve body, and hydraulic channel and the oil inlet and the oil-out that are linked together with hydraulic channel are seted up to the valve body, and hydraulic channel's both ends are provided with end cover and bottom plate respectively, and the activity is passed the end cover and is provided with the case with hydraulic channel matched with, the radius of case is less than hydraulic channel's radius, is provided with the internal diameter matched with delay response piston with hydraulic channel on the case, is provided with the axial aperture hole and the radial aperture hole of intercommunication each other in the delay response piston, and the outer port in axial aperture hole is towards the direction of oil inlet.
Furthermore, the oil inlet is close to the end cover, the oil outlet is close to the bottom plate, one end of the valve core close to the bottom plate is provided with a return spring which is in abutting connection with the bottom plate, and the radial small-diameter hole is located between the oil inlet and the oil outlet when no external force acts on the valve core.
Furthermore, the axial small-diameter hole is a through hole penetrating through the delay response piston, and an oil return opening which is communicated with the hydraulic channel and is positioned between the delay response piston and the bottom plate is arranged on the valve body.
Furthermore, a damping plug for controlling the oil return rate is arranged in the oil return port, and a throttling channel communicated with the oil return port is formed in the damping plug.
Further, a safety piston is arranged on the valve core between the delay response piston and the end cover.
Further, the distance between the front end face of the safety piston and the radial small-diameter hole is not smaller than the distance between the front end face of the oil inlet and the oil outlet.
Further, a sealing ring is arranged between the valve core and the end cover or/and between the valve body and the bottom plate.
The invention can delay the response time of the switch valve, and the response time can be controlled, thereby effectively avoiding negative energy impact on the hydraulic system, fully ensuring the stability of the hydraulic system and prolonging the service life of the hydraulic system. According to the invention, by applying axial external force to the valve core, the oil inlet and the oil outlet can be communicated through the axial small-diameter hole and the radial small-diameter hole in the time-delay response piston, so that the oil pressure of the oil outlet can slowly rise. In addition, the high pressure of the oil inlet can flow into the cavity where the return spring is located through the axial small-diameter hole to form damping, and different damping values can be provided by replacing the damping plug with different throttling channels. The axial small-diameter hole and the radial small-diameter hole which are formed in the delay response piston act together with the damping plug, so that the accuracy of response time control is further ensured.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Embodiment 1, a switching valve for increasing response time, as shown in fig. 1, includes a valve body 2, the valve body 2 is provided with a hydraulic channel 10, and an oil inlet 11 and an oil outlet 12 communicated with the hydraulic channel 10, and two ends of the hydraulic channel 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 arranged between the valve body 2 and the end cover 3 and between the valve body 2 and the bottom plate 1, so that oil leakage is effectively avoided.
The valve core 4 movably inserted and matched with the hydraulic channel 10 is movably arranged on the end cover 3 in a penetrating mode, the sealing ring 5 is arranged between the valve core 4 and the end cover 3, and the sealing performance of the valve core 4 when sliding along the hydraulic channel 10 is effectively guaranteed.
The radius of the valve core 4 is smaller than that of the hydraulic channel 10, a delay response piston 8 matched with the inner diameter of the hydraulic channel 10 is arranged on the valve core 4, an axial small-diameter hole 7 and a radial small-diameter hole 13 which are mutually communicated are arranged in the delay response piston 8, and the outer port of the axial small-diameter hole 7 faces the direction of the oil inlet 11. The opening and closing actions of the switch valve can be realized by pushing and pulling the valve core 4, when the radial small-diameter hole 13 corresponds to the oil outlet 12, the oil inlet 11 can be communicated with the oil outlet 12 through the axial small-diameter hole 7 and the radial small-diameter hole 13, so that the oil pressure in the oil outlet 12 slowly rises, and the response time is effectively prolonged.
Embodiment 2 is a switch valve for increasing response time, the oil inlet 11 is arranged near the end cover 3, the oil outlet 12 is arranged near the bottom plate 1, and one end of the valve core 4 near the bottom plate 1 is provided with a return spring 9 which is in top connection with the bottom plate 1. One end of a return spring 9 is sleeved on the valve core 4 and is abutted with the rear end face of the delay response piston 8, and the other end of the return spring 9 is abutted with the inner end face of the bottom plate 1.
When no external force acts on the valve core 4, the radial small-diameter hole 13 is positioned between the oil inlet 11 and the oil outlet 12 under the action of the return spring 9, the oil inlet 11 and the oil outlet 12 cannot be communicated at the moment, and the switch valve is in a closed state. When the valve core 4 is squeezed by external force, the return spring 9 contracts, the radial small-diameter hole 13 is communicated with the oil outlet 12, and the pressure in a hydraulic system connected with the oil outlet 12 can slowly rise.
The other structure of this embodiment is the same as embodiment 1.
Embodiment 3, a switch valve for increasing response time, the axial small-diameter hole 7 is a through hole penetrating through the delay response piston 8, and high-pressure oil in the oil inlet 11 can flow into a cavity where the return spring 9 is located through the through hole, so as to provide a damping effect.
The valve body 2 is provided with an oil return opening 14 which is communicated with the hydraulic passage 10 and is positioned between the delay response piston 8 and the bottom plate 1, a damping plug 15 for controlling oil return rate is arranged in the oil return opening 14, and a throttling passage communicated with the oil return opening is formed in the damping plug 15. By changing the size of the throttling channel of the damping plug 15, the size of the damping can be controlled, and the speed of the response time can be conveniently adjusted.
The other structure of this embodiment is the same as embodiment 2.
Embodiment 4, a safety piston 6 is provided on a valve element 4 between a delay response piston 8 and an end cap 3, and sealing performance between a hydraulic passage 10 and the end cap 3 can be ensured. The distance between the front end face of the safety piston 6 and the radial small-diameter hole 13 is not smaller than the distance between the front end face of the oil inlet 11 and the rear end face of the oil outlet 12, and the front end face of the safety piston 6 is always located in front of the front end face of the oil inlet 11 when the valve core 4 moves to the position where the oil inlet 11 is communicated with the oil outlet 12 along the direction of the bottom plate 1.
Other structures of this embodiment may be the same as any of embodiments 1 to 3.
Nothing in this specification is intended to be exhaustive of all conventional and well known techniques.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (5)

1. The utility model provides an increase response time's ooff valve, includes valve body (2), and oil inlet (11) and oil-out (12) that hydraulic pressure passageway (10) and be linked together with hydraulic pressure passageway (10) have been seted up to valve body (2), and the both ends of hydraulic pressure passageway (10) are provided with end cover (3) and bottom plate (1) respectively, its characterized in that: a valve core (4) matched with the hydraulic channel (10) is movably arranged through the end cover (3), the radius of the valve core (4) is smaller than that of the hydraulic channel (10), a delay response piston (8) matched with the inner diameter of the hydraulic channel (10) is arranged on the valve core (4), an axial small-diameter hole (7) and a radial small-diameter hole (13) which are communicated with each other are arranged in the delay response piston (8), and the outer port of the axial small-diameter hole (7) faces the direction of the oil inlet (11); the axial small-diameter hole (7) is a through hole penetrating through the delay response piston (8), and an oil return opening (14) which is communicated with the hydraulic channel (10) and is positioned between the delay response piston (8) and the bottom plate (1) is formed in the valve body (2); a damping plug (15) for controlling the oil return rate is arranged in the oil return opening (14), and a throttling channel communicated with the oil return opening is formed in the damping plug (15).
2. The switching valve for increasing response time according to claim 1, wherein: the oil inlet (11) is close to the end cover (3) and is arranged, the oil outlet (12) is close to the bottom plate (1) and is arranged, one end, close to the bottom plate (1), of the valve core (4) is provided with a return spring (9) connected with the bottom plate in a jacking mode, and the radial small-diameter hole (13) is located between the oil inlet (11) and the oil outlet (12) when no external force acts on the valve core (4).
3. A switching valve for increasing response time according to claim 1 or 2, wherein: and a safety piston (6) is arranged on the valve core (4) between the delay response piston (8) and the end cover (3).
4. The switching valve for increasing response time according to claim 3, wherein: the distance between the front end face of the safety piston (6) and the radial small-diameter hole (13) is not smaller than the distance between the front end face of the oil inlet (11) and the rear end face of the oil outlet (12).
5. The switching valve for increasing response time according to claim 4, wherein: and a sealing ring (5) is arranged between the valve core (4) and the end cover (3) or/and between the valve body (2) and the bottom plate (1).
CN201910459260.8A 2019-05-29 2019-05-29 Switching valve capable of increasing response time Active CN110131433B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910459260.8A CN110131433B (en) 2019-05-29 2019-05-29 Switching valve capable of increasing response time

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910459260.8A CN110131433B (en) 2019-05-29 2019-05-29 Switching valve capable of increasing response time

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CN110131433A CN110131433A (en) 2019-08-16
CN110131433B true CN110131433B (en) 2021-03-02

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110848196B (en) * 2019-11-28 2021-11-23 河南航天液压气动技术有限公司 Hydraulic control valve
CN112377668B (en) * 2020-11-16 2022-04-26 浙江苏尔达洁具有限公司 Tap that possesses delay function
CN113898760A (en) * 2021-10-27 2022-01-07 哈尔滨工业大学 Digital reversing valve and control method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2551171B1 (en) * 1983-08-22 1990-04-20 Cessna Aircraft Co IMPROVED FLOW LIMITATION AND PRESSURE BALANCING CONTROL VALVE
JP4244346B2 (en) * 2005-04-27 2009-03-25 株式会社ケーヒン Hydraulic control valve
JP2008275057A (en) * 2007-04-27 2008-11-13 Mitsubishi Heavy Ind Ltd Inching valve structure
JP2018025262A (en) * 2016-08-11 2018-02-15 株式会社不二越 Electromagnetic proportional valve
CN109306980A (en) * 2018-11-06 2019-02-05 河南航天液压气动技术有限公司 A kind of reversal valve

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