CN103672060A - Pneumatic reducing valve with overflow function - Google Patents
Pneumatic reducing valve with overflow function Download PDFInfo
- Publication number
- CN103672060A CN103672060A CN201310695009.4A CN201310695009A CN103672060A CN 103672060 A CN103672060 A CN 103672060A CN 201310695009 A CN201310695009 A CN 201310695009A CN 103672060 A CN103672060 A CN 103672060A
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- CN
- China
- Prior art keywords
- pressure
- pneumatic
- release valve
- spool
- diaphragm
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- 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.)
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Classifications
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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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
Abstract
The invention discloses a pneumatic reducing valve with an overflow function. The pneumatic reducing valve comprises a diaphragm member and a valve element abutting against the diaphragm member, a diaphragm chamber communicated with an outlet of the pneumatic reducing valve is arranged in a shell of the pneumatic reducing valve, and an overflow hole is formed in the position, abutting against the valve element, of the diaphragm member. When air pressure in the diaphragm chamber is increased, pressure gas in the diaphragm chamber presses the diaphragm member to move in the direction far away from the valve element, and the overflow hole is opened. In this way, the pneumatic reducing valve with the overflow function has a better pressure stabilization effect.
Description
Technical field
The present invention relates to valve technology field, relate in particular to the pneumatic pressure-release valve with relief function.
Background technique
Pneumatic pressure-release valve is also pressure regulator valve, and pneumatic pressure-release valve can regulate higher inlet pressure be reduced to the outlet pressure of requirement, and can guarantee the stability of outlet pressure, and therefore, pneumatic pressure-release valve can play decompression and pressure stabilization function.
In prior art, pneumatic pressure-release valve comprises diaphragm parts, spool and flexible adjustment device, matches with flexible adjustment device in diaphragm parts one end, and the other end and spool offset.
Pressed gas is exported by reduction valve valve outlet port through reduction valve entrance, now, can adjustable elastic controlling device, promote diaphragm parts and spool and move down, increase valve port opening the pressure of exporting gas is increased.The pressed gas of exit position produces a upwards thrust on diaphragm parts, and when the Spring balanced of this thrust and flexible adjustment device, outlet pressure is just stabilized in certain value.When opposite direction adjustable elastic controlling device, the aperture of valve port reduces, and the pressed gas of output reduces thereupon.
But the pressed gas that enters pneumatic pressure-release valve in prior art there will be the stressed situation of unexpected increasing, can cause like this problem that atmospheric pressure also there will be larger fluctuation that of pneumatic pressure-release valve.
Therefore, how to avoid the atmospheric pressure that of pneumatic pressure-release valve to occur the larger problem of stirring, become those skilled in the art's important technological problems to be solved.
Summary of the invention
The invention provides a kind of pneumatic pressure-release valve with relief function, it can effectively avoid the problem that larger fluctuation appears in atmospheric pressure that of pneumatic pressure-release valve.
A kind of pneumatic pressure-release valve with relief function provided by the invention, comprise diaphragm parts and the spool offseting with described diaphragm parts, in described Pneumatic decompression valve housing, be provided with the diaphragm chamber communicating with the outlet of described pneumatic pressure-release valve, the position that described diaphragm parts and described spool offset is provided with overflow hole, when the air pressure in described diaphragm chamber increases, pressed gas in described diaphragm chamber is oppressed described diaphragm parts and is moved to the direction away from described spool, and described overflow hole is opened.
Preferably, the contact position of described diaphragm parts and described spool is provided with hemispherical groove, in described hemispherical groove, be provided with resilient pad, described resilient pad is provided with the through hole corresponding with the overflow hole of described diaphragm parts, described spool and described resilient pad offset, and the end face offseting with described resilient pad of described spool is spherical.
Preferably, also comprise regulator, described regulator comprises the elastic member that offsets with described diaphragm parts and for regulating the flexible adjustment device of the pretightening force of described elastic member.
Preferably, described flexible adjustment device is pressure regulating screw, described pressure regulating screw is installed on described Pneumatic decompression valve housing by screw-thread fit, and the tail end of described pressure regulating screw and described elastic member offset, and regulate the pretightening force of described elastic member by rotating described pressure regulating screw.
Preferably, described elastic member is pressure adjusting spring.
Preferably, between described pressure regulating screw and described pressure adjusting spring, be also provided with pressing member, described pressing member comprises that groove body is arranged at edge and the outward extending extension edge of described groove body, described groove body is positioned at the space that described pressure adjusting spring surrounds, and described extension edge rides on described pressure adjusting spring, described pressure regulating screw is inserted in described groove body, and offsets with the bottom land of described groove body.
Preferably, described resilient pad is rubber sheet gasket.
Preferably, described resilient pad is silica gel pad.
A kind of pneumatic pressure-release valve with relief function provided by the invention, comprise diaphragm parts and the spool offseting with described diaphragm parts, in described Pneumatic decompression valve housing, be provided with the diaphragm chamber communicating with the outlet of described pneumatic pressure-release valve, the position that described diaphragm parts and described spool offset is provided with overflow hole, when the air pressure in described diaphragm chamber increases, pressed gas in described diaphragm chamber is oppressed described diaphragm parts and is moved to the direction away from described spool, and described overflow hole is opened.
So arrange, on diaphragm parts, be provided with overflow hole, in Pneumatic decompression valve housing, be provided with diaphragm chamber, diaphragm chamber communicates with outlet passage, while having pressed gas in diaphragm chamber, under the effect of diaphragm chamber's internal pressure gas, diaphragm parts can be to top offset, to the direction displacement away from spool.If during the instantaneous rising of inlet pressure of reduction valve, outlet pressure also increases, at this moment Hui Shi diaphragm chamber internal pressure raises, the corresponding increase of thrust producing on diaphragm parts, this thrust has been destroyed original equilibrium of forces, and diaphragm parts are moved up, overflow hole is opened, there is small part gas to discharge through overflow hole, and then avoided the unexpected increase of outlet pressure, there is good pressure stabilization function.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is pneumatic pressure-release valve internal structure schematic diagram in the specific embodiment of the invention;
Fig. 2 is diaphragm parts structural representation in the specific embodiment of the invention;
Fig. 3 is that in the specific embodiment of the invention, diaphragm parts coordinate schematic diagram with spool;
In Fig. 1-Fig. 3:
Diaphragm parts-11, spool-12, resilient pad-13, through hole-14, pressure regulating screw-15, pressure adjusting spring-16, pressing member-17, overflow hole-18, Returnning spring-19, diaphragm chamber-20.
Embodiment
This embodiment provides a kind of pneumatic pressure-release valve with relief function, and it has good pressure stabilization function.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiments.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment who obtains under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1-Fig. 3, a kind of pneumatic pressure-release valve with relief function that this embodiment provides, comprise diaphragm parts 11 and the spool 12 offseting with diaphragm parts 11, in Pneumatic decompression valve housing, be provided with the diaphragm chamber 20 communicating with the outlet of pneumatic pressure-release valve, diaphragm parts 11 are provided with overflow hole 18 with the position that spool 12 offsets, when the air pressure in diaphragm chamber 20 increases, the pressed gas compressing diaphragm parts 11 in diaphragm chamber 20 move to the direction away from spool 12, so that overflow hole 18 is opened.
So arrange, on diaphragm parts 11, be provided with overflow hole 18, in Pneumatic decompression valve housing, be provided with diaphragm chamber 20, diaphragm chamber 20 communicates with outlet passage, while thering is pressed gas in diaphragm chamber 20, under the effect of diaphragm chamber's 20 internal pressure gases, diaphragm parts 11 can be to top offset, to the direction displacement away from spool 12.If during the instantaneous rising of inlet pressure of reduction valve, outlet pressure also increases, at this moment Hui Shi diaphragm chamber 20 internal pressures raise, the corresponding increase of thrust producing on diaphragm parts 11, this thrust has been destroyed original equilibrium of forces, and diaphragm parts 11 are moved up, overflow hole 18 is opened, there is small part gas to discharge through overflow hole 18, and then avoided the unexpected increase of outlet pressure, there is good pressure stabilization function.
In the preferred version that this embodiment provides, diaphragm parts 11 are provided with hemispherical groove with the contact position of spool 12, in hemispherical groove, be provided with resilient pad 13, resilient pad 13 is provided with the through hole corresponding with the overflow hole 18 of diaphragm parts 11, and spool 12 offsets with resilient pad 13.
So arrange, the pneumatic pressure-release valve that this embodiment provides, because diaphragm parts 11 and the cooperation position of spool 12 are provided with hemispherical groove, and the end face offseting with resilient pad 13 of spool 12 is spherical, when the spherical of spool 12 and the hemispherical groove of diaphragm parts 11 offset, the two area of contact is large, has good sealing.In addition, because the contact position between diaphragm parts 11 and spool 12 is provided with resilient pad 13, the contact between the two is soft contact, with respect to being rigid contact between the two in prior art, between diaphragm parts 11 and spool 12, there is better sealing, the problem of having avoided pressed gas to reveal.
In the preferred version of this embodiment, pneumatic pressure-release valve also comprises regulator, and regulator comprises the elastic member that offsets with diaphragm parts 11 and for the flexible adjustment device of the pretightening force of adjustable elastic parts.
Above-mentioned flexible adjustment device can be pressure regulating screw 15, and pressure regulating screw 15 is installed on Pneumatic decompression valve housing by screw-thread fit, and tail end and the elastic member of pressure regulating screw 15 offset, by the pretightening force of rotation pressure regulating screw 15 adjustable elastic parts.Above-mentioned elastic member can be pressure adjusting spring 16, certainly, also can be the elastomer of other types, such as, elastic caoutchouc rod etc.
So arrange, when rotation pressure regulating screw 15, pressure between pressure regulating screw 15 and pressure adjusting spring 16 changes, and then the pretightening force of pressure adjusting spring 16 is changed, butt power between pressure adjusting spring 16 and diaphragm parts 11 changes, and so, can make 11 upper and lower displacements of diaphragm parts, so that 12 upper and lower displacements of band movable valve plug, have realized the adjusting of Pneumatic decompression valve opening.
As preferably, in order to guarantee the butt stability between pressure regulating screw 15 and pressure adjusting spring 16, between pressure regulating screw 15 and pressure adjusting spring 16, be also provided with pressing member 17, pressing member 17 comprises groove body and is arranged at edge and the outward extending extension edge of groove body, groove body is positioned at the space that pressure adjusting spring 16 surrounds, and extension edge rides on pressure adjusting spring 16, and pressure regulating screw 15 is inserted in groove body, and offset with the bottom land of groove body.
So arrange, pressed gas is after reduction valve inlet restriction, and pressure drop is exported by reduction valve valve outlet port, and the large I of pressure of output gas is regulated by pressure adjusting spring 16.When rotation pressure regulating screw 15, pressure adjusting spring 16 is compressed, promotes diaphragm parts 11 and spool 12 and moves down, and increases valve port opening the pressure of exporting gas is increased.The pressed gas of exit position produces a upwards thrust on diaphragm parts 11, and when the Spring balanced of this thrust and pressure adjusting spring 16, outlet pressure is just stabilized in certain value.When opposite spin pressure regulating screw 15, the aperture of valve port reduces, and the pressed gas of output reduces thereupon.
In another preferred version of this embodiment, reduction valve inside is also provided with for promoting spool 12 to the Returnning spring 19 of diaphragm parts 11 direction displacements, so arranges, when moving on diaphragm parts 11, elastic force effect by Returnning spring 19, can promote to move on spool 12, and then valve port opening is reduced, throttling action increases, outlet pressure is returned to fall, overflow hole 18 is closed, and reaches new balance, and delivery pressure can recover initial value substantially again.
If the instantaneous decline of incoming pressure, delivery pressure also declines, diaphragm parts 11 and spool 12 move down thereupon, and valve port opening strengthens, and throttling action reduces, and makes delivery pressure also substantially get back to original value, has good voltage regulation result.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To these embodiments' multiple modification, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a pneumatic pressure-release valve with relief function, comprise diaphragm parts and the spool offseting with described diaphragm parts, it is characterized in that, in described Pneumatic decompression valve housing, be provided with the diaphragm chamber communicating with the outlet of described pneumatic pressure-release valve, the position that described diaphragm parts and described spool offset is provided with overflow hole, when the air pressure in described diaphragm chamber increases, the pressed gas in described diaphragm chamber is oppressed described diaphragm parts and is moved to the direction away from described spool, and described overflow hole is opened.
2. pneumatic pressure-release valve as claimed in claim 1, it is characterized in that, the contact position of described diaphragm parts and described spool is provided with hemispherical groove, in described hemispherical groove, be provided with resilient pad, described resilient pad is provided with the through hole corresponding with the overflow hole of described diaphragm parts, described spool and described resilient pad offset, and the end face offseting with described resilient pad of described spool is spherical.
3. pneumatic pressure-release valve as claimed in claim 1, is characterized in that, also comprises regulator, and described regulator comprises the elastic member that offsets with described diaphragm parts and for regulating the flexible adjustment device of the pretightening force of described elastic member.
4. pneumatic pressure-release valve as claimed in claim 3, it is characterized in that, described flexible adjustment device is pressure regulating screw, described pressure regulating screw is installed on described Pneumatic decompression valve housing by screw-thread fit, the tail end of described pressure regulating screw and described elastic member offset, and regulate the pretightening force of described elastic member by rotating described pressure regulating screw.
5. pneumatic pressure-release valve as claimed in claim 4, is characterized in that, described elastic member is pressure adjusting spring.
6. pneumatic pressure-release valve as claimed in claim 5, it is characterized in that, between described pressure regulating screw and described pressure adjusting spring, be also provided with pressing member, described pressing member comprises that groove body is arranged at edge and the outward extending extension edge of described groove body, described groove body is positioned at the space that described pressure adjusting spring surrounds, and described extension edge rides on described pressure adjusting spring, described pressure regulating screw is inserted in described groove body, and offsets with the bottom land of described groove body.
7. pneumatic pressure-release valve as claimed in claim 2, is characterized in that, described resilient pad is rubber sheet gasket.
8. pneumatic pressure-release valve as claimed in claim 2, is characterized in that, described resilient pad is silica gel pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310695009.4A CN103672060A (en) | 2013-12-17 | 2013-12-17 | Pneumatic reducing valve with overflow function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310695009.4A CN103672060A (en) | 2013-12-17 | 2013-12-17 | Pneumatic reducing valve with overflow function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103672060A true CN103672060A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310695009.4A Pending CN103672060A (en) | 2013-12-17 | 2013-12-17 | Pneumatic reducing valve with overflow function |
Country Status (1)
| Country | Link |
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| CN (1) | CN103672060A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164052A (en) * | 2021-11-30 | 2022-03-11 | 安徽三联学院 | Production process and equipment of low-sulfur-content biodiesel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2262147Y (en) * | 1995-12-09 | 1997-09-10 | 中外合资浙江新益空压机有限公司 | Pressure reducing valve |
| CN201228792Y (en) * | 2007-08-16 | 2009-04-29 | 陆丕贤 | Pneumatic air pressure reducing valve |
| US20090302256A1 (en) * | 2008-06-10 | 2009-12-10 | Fujikura Rubber Ltd. | Pressure reducing valve |
| CN201651466U (en) * | 2010-01-14 | 2010-11-24 | 威海博胜气动液压有限公司 | Air pressure relief valve for railway locomotive air supply systems |
| CN102287559A (en) * | 2011-08-03 | 2011-12-21 | 浙江三正气动有限公司 | Diaphragm type pressure-reducing valve |
| CN203730852U (en) * | 2013-12-17 | 2014-07-23 | 重庆川仪自动化股份有限公司 | Pneumatic pressure reducing valve with overflow function |
-
2013
- 2013-12-17 CN CN201310695009.4A patent/CN103672060A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2262147Y (en) * | 1995-12-09 | 1997-09-10 | 中外合资浙江新益空压机有限公司 | Pressure reducing valve |
| CN201228792Y (en) * | 2007-08-16 | 2009-04-29 | 陆丕贤 | Pneumatic air pressure reducing valve |
| US20090302256A1 (en) * | 2008-06-10 | 2009-12-10 | Fujikura Rubber Ltd. | Pressure reducing valve |
| CN201651466U (en) * | 2010-01-14 | 2010-11-24 | 威海博胜气动液压有限公司 | Air pressure relief valve for railway locomotive air supply systems |
| CN102287559A (en) * | 2011-08-03 | 2011-12-21 | 浙江三正气动有限公司 | Diaphragm type pressure-reducing valve |
| CN203730852U (en) * | 2013-12-17 | 2014-07-23 | 重庆川仪自动化股份有限公司 | Pneumatic pressure reducing valve with overflow function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164052A (en) * | 2021-11-30 | 2022-03-11 | 安徽三联学院 | Production process and equipment of low-sulfur-content biodiesel |
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| PB01 | Publication | ||
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Application publication date: 20140326 |