CN104373642A - Novel one-way valve - Google Patents
Novel one-way valve Download PDFInfo
- Publication number
- CN104373642A CN104373642A CN201410643031.9A CN201410643031A CN104373642A CN 104373642 A CN104373642 A CN 104373642A CN 201410643031 A CN201410643031 A CN 201410643031A CN 104373642 A CN104373642 A CN 104373642A
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- CN
- China
- Prior art keywords
- chamber
- spool
- cavity
- valve body
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention relates to the technical field of one-way valves, in particular to a novel one-way valve used for a pneumatic system. The one-way valve comprises a valve body, an input opening is formed in one side of the valve body, an output opening is formed in the other end of the valve body, a cavity P is formed in the inner side of the input opening of the valve body, and a cavity A is formed in the inner side of the output opening of the valve body, communicated with the output opening and the cavity P through small holes; a valve core is formed in the cavity A, roll balls are arranged on the peripheral face of the valve core, make contact with the inner wall of the cavity A and are in slide fit with the inner wall of the cavity A, a groove is formed in the rear end on one side, close to the cavity A, of the valve core and internally provided with a spring, the other end of the spring makes contact with the end face of the cavity A, the spring is in a compressed state, the front end, close to the cavity P, of the valve core is of a spherical structure, and the spherical structure is matched with the small hole communicated between the cavity A and the cavity P. The valve core can be reset instantly by using the air pressure principle, the backflow phenomenon is avoided, the structure is simple, and control is reliable.
Description
Technical field
The present invention relates to one-way valve technical field, be specifically related to the Novel check valve of pneumatic system.
Background technique
One-way valve is that air-flow can only direction flowing and can not the position control valve of reverse flow.Pressurized air enters from P mouth, overcomes spring force and frictional force makes one-way valve valve port open, and pressurized air flow to A from P; When P mouth non-compressed air, under spring force and the effect of A mouth (chamber) residual air power; Valve port is in closed condition, makes the air-flow from A to P obstructed.One-way valve is applied to the occasion not allowing flow reversal, one-way valve is widely used in pneumatic system, as air compressor inflate to gas tank time, an one-way valve is set between air compressor and gas tank, when air compressor quits work, the pressurized air in gas tank can be prevented to be back to air compressor.But existing one-way valve is when cutting off the air-flow in suction port direction, the frictional force between spool and valve body is large, and spool can not reset at once, makes one-way valve occur the backflow phenomenon of moment, affects the normal operation of pneumatic system.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned defect, provides Novel check valve, and this one-way valve utilizes air pressure principle can make spool momentary reset, avoids occurring backflow phenomenon, and structure is simple, controls reliable.
The present invention adopts following technological scheme to solve its technical problem:
Novel check valve, comprise valve body, described valve body side is inlet opening, the other end is delivery outlet, P chamber is provided with inside described valve body inlet opening, A chamber is provided with inside valve body delivery outlet, between A chamber and delivery outlet, all be communicated with aperture between A chamber with P chamber, A is provided with spool in chamber, spool outer circumferential face is provided with ball, ball coordinates with A cavity wall contact slide, spool is provided with groove near the rear end of side, A chamber, spring is provided with in groove, the spring the other end contacts with A resonator end surface, spring is in compressive state, spool is spherical structure near the front end in P chamber, the aperture that spherical structure communicates with between A chamber with P chamber coordinates.
Further, described A chamber internal diameter is greater than delivery outlet internal diameter, and P chamber internal diameter is less than A chamber internal diameter and is greater than gateway internal diameter.A chamber, P chamber are energy storage chamber, and A intracavity gas pressure is greater than the gas pressure intensity in P chamber.
Further, described spool external diameter is less than A chamber internal diameter.Be slidably connected with ball between spool and A chamber, there is gap between the two, pressurized gas thus gap passes through.
Further, the spherical structure radius of described spool is greater than the diameter being communicated with aperture between A chamber with P chamber.
Further, described A chamber be communicated with aperture between P chamber and be in A resonator end surface place and be provided with rubber sheet gasket.Rubber sheet gasket plays buffer function, and auxiliary spool spherical structure is pressed on aperture place simultaneously.
The invention has the beneficial effects as follows, adopt such scheme, A chamber and P chamber all form energy storage chamber, pressurized gas is carried after energy storage in chamber again, and the part in corresponding A chamber, spool rear portion is greater than the part in the anterior corresponding A chamber of spool, makes spool rear end pressure be greater than spool front end pressure, when inlet opening cuts off air feed, under the effect of air pressure and spring, spool is resetted rapidly, spool front end spherical structure is blocked aperture and is avoided refluxing, and controls reliable.
Accompanying drawing explanation
By the detailed description below in conjunction with accompanying drawing, aforesaid and other object, the feature and advantage of the present invention will become apparent.
Fig. 1 is cross section structure schematic diagram of the present invention.
Wherein: 1 is valve body, 1.1 is inlet opening, and 1.2 is delivery outlet, and 2 is A chamber, and 3 is P chamber, and 4 is spool, and 5 is spring, and 6 is ball, and 7 is rubber sheet gasket.
Embodiment
Novel check valve as shown in Figure 1, comprise valve body, the side of valve body 1 is inlet opening 1.1, the other end is delivery outlet 1.2, valve body 1 is provided with P chamber 3 inside inlet opening 1.1, A chamber 2 is provided with inside delivery outlet 1.2, between A chamber 2 and delivery outlet 1.2, all be communicated with aperture between A chamber 2 with P chamber 3, the diameter in A chamber 2 is greater than the diameter of delivery outlet 1.2, be greater than the diameter in P chamber 3, the diameter that the diameter in P chamber 3 is less than A chamber 2 is greater than the diameter of inlet opening 1.1, spool 4 is arranged in A chamber 2, the outer circumferential face of spool 4 is provided with ball 6, ball 6 keeps in touch with the inwall in A chamber 2, make to be slidably matched between spool 4 and A chamber 2, spool 4 is near the rearmost flute of side, A chamber 2, spring 5 is embedded in groove, spring 5 is in confined state, spring 5 the other end and A chamber 2 end contact, spool 4 rear end and A chamber 2 form an appearance air chamber, spool 4 is spherical structure near the front end in P chamber 3, the aperture that spherical structure communicates with between A chamber 2 with P chamber 3 coordinates, and its radius is greater than the diameter of aperture, the pressurized air inputted from inlet opening 1.2 is carried toward output terminal 1.1 through aperture after energy storage in P chamber 3, pressurized gas after energy storage overcomes the elastic force of spring 5, backing down spool 4 makes spool 4 move backward, the spherical structure of spool 4 front end departs from aperture, pressurized air enters the anterior corresponding A chamber 2 of spool 4, be slidably connected with ball 6 between spool 4 and A chamber 2, the two enters to there is gap, pressurized gas enters into A chamber 2 corresponding to spool 4 rear portion by gap, and the part in corresponding A chamber, spool 4 rear portion 2 is greater than the part in corresponding A chamber, spool 4 front end 2, for aperture communicates between A chamber 2 with delivery outlet 1.2, a large amount of airflow obstructions again enters into delivery outlet 1.2 by aperture after energy storage in the A chamber 2 at spool 4 rear portion, A chamber 2 diameter is larger than P chamber 3, volume ratio P chamber 3 is large, pressurized air energy storage is high, when cutting off the pressurized air of inlet opening 1.1, the energy storage pressure in A chamber, spool 4 rear portion 2 is greater than spool 4 forefront pressure, elastic force in conjunction with spring 5 makes spool 4 reset rapidly, prevent the generation of backflow phenomenon, the preferred aperture that is communicated with between A chamber 2 with P chamber 3 is in end, A chamber 2 and is provided with rubber sheet gasket 7, prevent the mutual wearing and tearing of spool 4 spherical structure and aperture, make the better effects if of blocking-up, when spool 4 resets, gas in the anterior corresponding A chamber 2 of spool 4 can flow to the rear end of spool 4 along the gap between spool 4 and A chamber 2, the part in the anterior corresponding A chamber 2 of spool 4 be the smaller portions in A chamber 2 in it gas pressure intensity be less than the gas pressure intensity in P chamber 3, gas can not be refluxed.
The present invention is not limited to described embodiment, and those skilled in the art, not departing from spirit of the present invention namely openly in scope, still can do some and revise or change, therefore the scope that the scope of the present invention limits with claims is as the criterion.
Claims (5)
1. Novel check valve, comprise valve body, described valve body side is inlet opening, the other end is delivery outlet, it is characterized in that: inside described valve body inlet opening, be provided with P chamber, A chamber is provided with inside valve body delivery outlet, between A chamber and delivery outlet, all be communicated with aperture between A chamber with P chamber, A is provided with spool in chamber, spool outer circumferential face is provided with ball, ball coordinates with A cavity wall contact slide, spool is provided with groove near the rear end of side, A chamber, spring is provided with in groove, the spring the other end contacts with A resonator end surface, spring is in compressive state, spool is spherical structure near the front end in P chamber, the aperture that spherical structure communicates with between A chamber with P chamber coordinates.
2. Novel check valve according to claim 1, is characterized in that: described A chamber internal diameter is greater than delivery outlet internal diameter, and P chamber internal diameter is less than A chamber internal diameter and is greater than gateway internal diameter.
3. Novel check valve according to claim 1, is characterized in that: described spool external diameter is less than A chamber internal diameter.
4. Novel check valve according to claim 1, is characterized in that: the spherical structure radius of described spool is greater than the diameter being communicated with aperture between A chamber with P chamber.
5. Novel check valve according to claim 1, is characterized in that: described A chamber be communicated with aperture between P chamber and be in A resonator end surface place and be provided with rubber sheet gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410643031.9A CN104373642A (en) | 2014-11-13 | 2014-11-13 | Novel one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410643031.9A CN104373642A (en) | 2014-11-13 | 2014-11-13 | Novel one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104373642A true CN104373642A (en) | 2015-02-25 |
Family
ID=52552724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410643031.9A Pending CN104373642A (en) | 2014-11-13 | 2014-11-13 | Novel one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104373642A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806792A (en) * | 2015-05-10 | 2015-07-29 | 湖南宜化化工有限责任公司 | Liquid feeding and draining one-way valve of urea liquid ammonia pump |
| CN107651300A (en) * | 2017-10-18 | 2018-02-02 | 天津市津冠润滑脂有限公司 | A kind of vacuum storage tank |
| CN107743954A (en) * | 2017-11-13 | 2018-03-02 | 国网冀北电力有限公司管理培训中心 | Passive ultrasonic birds driving device |
| CN113266499A (en) * | 2021-06-02 | 2021-08-17 | 北京汽车集团越野车有限公司 | Car check valve and car |
| CN113531134A (en) * | 2020-04-17 | 2021-10-22 | 盾安环境技术有限公司 | Expansion valve and heat exchange system with same |
-
2014
- 2014-11-13 CN CN201410643031.9A patent/CN104373642A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806792A (en) * | 2015-05-10 | 2015-07-29 | 湖南宜化化工有限责任公司 | Liquid feeding and draining one-way valve of urea liquid ammonia pump |
| CN107651300A (en) * | 2017-10-18 | 2018-02-02 | 天津市津冠润滑脂有限公司 | A kind of vacuum storage tank |
| CN107743954A (en) * | 2017-11-13 | 2018-03-02 | 国网冀北电力有限公司管理培训中心 | Passive ultrasonic birds driving device |
| CN113531134A (en) * | 2020-04-17 | 2021-10-22 | 盾安环境技术有限公司 | Expansion valve and heat exchange system with same |
| CN113266499A (en) * | 2021-06-02 | 2021-08-17 | 北京汽车集团越野车有限公司 | Car check valve and car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150225 |