CN102777649B - Pressure reducing valve - Google Patents
Pressure reducing valve Download PDFInfo
- Publication number
- CN102777649B CN102777649B CN201210209955.9A CN201210209955A CN102777649B CN 102777649 B CN102777649 B CN 102777649B CN 201210209955 A CN201210209955 A CN 201210209955A CN 102777649 B CN102777649 B CN 102777649B
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- Prior art keywords
- nozzle
- valve
- flap
- diaphragm
- hole
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/14—Control of fluid pressure with auxiliary non-electric power
- G05D16/16—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
- G05D16/163—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid using membranes within the main valve
Abstract
The invention relates to a pressure reducing valve and aims at providing a pressure reducing valve which enables concentricity of a steel ball and a nozzle to be good and enables the steel ball to be reset well. The pressure reducing valve comprises a valve body part, the valve body part is connected with a valve cover part, and a rotatable operating part penetrating through the valve cover part is arranged in the valve body part. A diaphragm assembly, a nozzle and a valve clack located in a nozzle backpressure chamber and capable of controlling a nozzle opening to be opened and closed under the backpressure effect are arranged in the valve body part. The valve clack is located above the nozzle opening, a compression spring is arranged between the valve clack and the nozzle, the compression spring and the nozzle opening are coaxial, the nozzle is further connected with a limiting structure for limiting the valve clack to move upwards to a preset position under the effect of the compression spring, and the top of the valve clack can penetrate through the limiting structure to extend out. The pressure reducing valve has the advantages that the concentricity of the steel ball and the nozzle opening is good, the steel ball and the diaphragm assembly reset well, and the pressure reducing valve is suitable for popularization and use.
Description
Technical field
The present invention relates to a kind of valve, relate in particular to a kind of precise pressure-reducing valve.
Background technique
Reduction valve is by regulating, inlet pressure being reduced to the outlet pressure of a certain needs, and rely on the energy of medium itself, makes outlet pressure automatically keep stable valve.
Chinese patent notification number CN1090350C discloses a kind of reduction valve, comprise main part, valve gap portion, there is operation unit, the first barrier film, the second barrier film, the 3rd barrier film and the 4th barrier film of handwheel, all these barrier films are all mutual within predetermined spacing is located at main part, and are provided with nozzle and flap among the 3rd chamber of septum.The steel ball of this reduction valve is fixed on the baffle plate as nozzle on tripod shell fragment, and in this kind of structure, steel ball floats between nozzle and diaphragm with tripod shell fragment, the steel ball performance that automatically resets is relatively good, but diaphragm malreduction, and steel ball by embrace in the middle of tripod shell fragment, process more difficult.
Chinese patent notification number CN201925552U discloses a kind of reduction valve, comprise main body, valve gap portion, operation unit, upper diaphragm assembly, inferior diaphragm, middle diaphragm, lower diaphragm unit, nozzle body, steel ball shell fragment, main valve plug, described main body forms rectangular-shaped multiple pressure flow outlets that have, the entirety of valve gap portion is connected with main body top, in valve gap inside, one spring is set, described operation unit is connected with the top of valve gap portion, upper diaphragm assembly, inferior diaphragm, interval is separated from each other to be horizontally installed in main body by setting for middle diaphragm and lower diaphragm unit, nozzle body and steel ball shell fragment are arranged between time diaphragm and middle diaphragm, main valve plug is arranged on main body underpart.In the structure of this reduction valve, be that steel ball floats between nozzle and diaphragm with tripod shell fragment equally, the steel ball performance that automatically resets is relatively good, but steel ball embraced in the middle of tripod shell fragment, process more difficult.
China Patent Publication No. CN1196511A discloses a kind of reduction valve, it has the seat and the pressure-reducing valve mechanism that are shaped as on the Pressure relief valve seat of the cylindrical sleeve of being with bottom, an internal face that is arranged on Pressure relief valve seat, and it has the relief passage being limited in Pressure relief valve seat of open and close in the time leaving with leaning seat.Steel ball in this reduction valve is fixed on the baffle plate as nozzle on diaphragm unit, in this kind of structure, steel ball moves with diaphragm, so the problem that does not exist steel ball to reset, but steel ball is fixed on diaphragm, is difficult to control the concentricity of itself and nozzle, and the briquetting of fixing steel ball is difficult to processing, briquetting is inconvenient to assemble, and has increased the weight of diaphragm unit simultaneously, is unfavorable for accurate voltage regulating.
Summary of the invention
The object of the present invention is to provide a kind of steel ball and nozzle good concentricity, the steel ball good reduction valve that resets, to solve the problem existing in background technique.
To achieve these goals, technological scheme of the present invention is: a kind of reduction valve, comprise valve body, in valve body, be connected with valve gap portion, in described valve body, be provided with rotating and through the operation unit of valve gap portion, in described valve body, be provided with diaphragm unit, under nozzle and the back pressure effect in nozzle back pressure chamber, can control the flap that nozzle opens and closes, flap is positioned at the top of nozzle, between described flap and nozzle, be provided with Compress Spring, described Compress Spring is coaxial with nozzle, on described nozzle, be also connected with the limit structure that is moved upward to precalculated position for limiting flap under Compress Spring effect, the top of described flap can be stretched out through limit structure.The mentality of designing of this technological scheme is: between flap and nozzle, set up spring, ensure the good reset of flap, Compress Spring and nozzle coaxially can ensure the concentricity of flap and nozzle simultaneously, for flap does not depart from spring, just design a limit structure, utilized this limit structure and Compress Spring that flap is limited in therebetween, when pressure regulation, operation unit need to move down diaphragm unit and flap be depressed to the aperture that reduces nozzle, therefore requires the top of flap to stretch out through limit structure.In this reduction valve, flap and nozzle good concentricity, flap resets good.
As preferably, described nozzle is located on nozzle body, between described diaphragm unit and nozzle body, is provided with Compress Spring.Between diaphragm unit and nozzle body, be also provided with Compress Spring, can make diaphragm unit and flap keep intended distance, can realize the Rapid reset of diaphragm unit simultaneously.
As preferably, described limit structure comprises the tubular column of the top closure of being located at nozzle body upper-end surface, and the end face of cylinder is provided with and can allows the through hole that flap top passes and be distributed in through hole pore around, and described through hole is coaxial with nozzle.This is the one of limit structure, has adopted the tubular column of top closure, and due to sealing, has just had pore on top.
As preferably, described limit structure comprises multiple dunnages of being located at nozzle body upper-end surface and the baffle plate of being located at multiple dunnages top, and baffle surface is provided with the through hole that can allow flap top to pass, and described through hole is coaxial with nozzle.This is the another kind of limit structure, and owing to having adopted untight two dunnages, air-flow is unblocked, therefore need to perforate on baffle plate.
As preferably, described multiple dunnages are circumferentially uniform nozzle.It is stressed evenly that circumferentially uniform dunnage can make the baffle plate at its top.
As preferably, described flap is steel ball.
As preferably, the lower side of described through hole is provided with chamfering.The lower side of through hole arranges chamfering can be better to the steel ball guidance quality that walks, and avoid scratch steel ball top layer.
The beneficial effect of reduction valve of the present invention is: steel ball and nozzle good concentricity, steel ball and diaphragm unit all reset well.
Brief description of the drawings
Fig. 1 is the sectional view of reduction valve in embodiment 1;
Fig. 2 is the enlarged diagram at A place in Fig. 1;
Fig. 3 is the schematic perspective view at nozzle place in embodiment 1;
Fig. 4 is the sectional view of reduction valve in embodiment 2;
Fig. 5 is the enlarged diagram at B place in Fig. 4;
Fig. 6 is the schematic perspective view at nozzle place in embodiment 2.
Number in the figure is respectively: 1. valve body 2. valve gap portion 3. operation unit 4. diaphragm unit 5. nozzle body 6. nozzle 7. primary diaphragm 8. secondary diaphragm 9. first Compress Spring 10. steel ball 11. second Compress Spring 12. cylinder 13. top cover 14. first dypass 15. feedback path 16. second dypass 17. pressure adjusting spring 18. main valve plug 19. dunnage 20. baffle plate 21. nozzle back pressure chambers.
Embodiment
Also by reference to the accompanying drawings technological scheme of the present invention is further described specifically below by embodiment.
Embodiment 1:
A kind of reduction valve, as shown in Figures 1 to 3, comprise valve body 1, in valve body 1, be connected with valve gap portion 2, in described valve body 1, be provided with rotating and through the operation unit 3 of valve gap 2, in valve body 1, be provided with primary diaphragm 7, diaphragm unit 4, nozzle body 5 and be located at the nozzle 6 on nozzle body 5, in diaphragm unit 4, be provided with secondary diaphragm 8, between diaphragm unit 4 and nozzle body 5, be provided with the first Compress Spring 9, the top of nozzle is provided with steel ball 10, between steel ball 10 and nozzle 6, be provided with the second Compress Spring 11, described nozzle body 5 upper-end surfaces are provided with the cylinder 12 of tubular, in the top of cylinder 12 is sealed with top cover 13 and the second Compress Spring 11 and steel ball 10 is enclosed in, in the middle of top cover 13, have through hole, through hole is distributed with pore around, described through hole, nozzle and the second Compress Spring 11 are coaxial, the top of steel ball 10 can be stretched out but can not deviate from from top cover 13 upper surfaces through through hole, the lower side of described through hole is provided with chamfering.
The working principle of this precise pressure-reducing valve is as follows:
Operation unit 3 turns clockwise, pressure adjusting spring 17 is compressed, diaphragm unit 4 promotes steel ball 10 downwards, reduce the aperture of nozzle 6, input air-flow flows into the epicoele of primary diaphragm 7 through the first dypass 14, under the amplification of nozzle 6, produce back pressure and form nozzle back pressure chamber 21, open main valve plug 18 thereby this back pressure promotion primary diaphragm 7 moves down, air outlet has air-flow output;
Output gas flow acts on the cavity of resorption of primary diaphragm 7 on the one hand through feedback path 15, with upper cavity pressure balance; On the other hand, output gas flow enters the cavity of resorption of secondary diaphragm 8 by the second dypass 16, balance each other with pressure adjusting spring 17, constant to maintain outlet pressure;
In the time that outlet pressure increases, on secondary diaphragm, move, steel ball 10 moves under the effect of the second Compress Spring 11, nozzle 6 apertures increase, and the back pressure of primary diaphragm 7 epicoeles reduces, and on primary diaphragm 7, moves, main valve plug 18 apertures reduce, and outlet pressure declines, and maintains the transient equiliblium of set pressure place.
Embodiment 2:
A kind of reduction valve, as shown in Figs. 4-6, itself and embodiment's 1 difference is: what be located at nozzle body 5 upper-end surfaces is not cylinder 12, but three dunnages 19 perpendicular to nozzle body 5, three dunnages 19 are circumferentially uniform nozzle, and three dunnage 19 tops are connected with baffle plate 20, and baffle plate 20 surfaces are provided with through hole, this through hole is identical with the through hole on top cover 13 in embodiment 1, and described through hole is coaxial with nozzle.
Above-mentioned described specific embodiment is only that design of the present invention is done to preferable examples explanation.All any amendments of making within the spirit and principles in the present invention or supplement or be equal to alternative, within all should being included in the protection domain of the claims in the present invention.
Claims (6)
1. a reduction valve, comprise valve body (1), in valve body (1), be connected with valve gap portion (2), in described valve body (1), be provided with rotating and through the operation unit (3) of valve gap portion (2), in described valve body (1), be provided with primary diaphragm (7), diaphragm unit (4), under nozzle (6) and the back pressure effect in nozzle back pressure chamber (21), can control the flap that nozzle opens and closes, flap is positioned at the top of nozzle, it is characterized in that: described flap and nozzle are provided with Compress Spring between (6), described Compress Spring is coaxial with nozzle, on described nozzle (6), be also connected with the limit structure that is moved upward to precalculated position for limiting flap under Compress Spring effect, the top of described flap can be stretched out through limit structure, described nozzle (6) is located on nozzle body (5), between described diaphragm unit (4) and nozzle body (5), be provided with Compress Spring, in diaphragm unit (4), be provided with secondary diaphragm (8), also comprise that can make to input air-flow enters first dypass (14) of primary diaphragm (7) epicoele and can make output gas flow enter second dypass (16) of secondary diaphragm (8) cavity of resorption, input air-flow flows into the epicoele of primary diaphragm (7) and under the amplification of nozzle (6), produces back pressure through the first dypass (14) and forms described nozzle back pressure chamber (21).
2. reduction valve according to claim 1, it is characterized in that: described limit structure comprises the tubular column (12) of the top closure of being located at nozzle body (5) upper-end surface, the end face of cylinder (12) is provided with and can allows the through hole that flap top passes and be distributed in through hole pore around, and described through hole is coaxial with nozzle.
3. reduction valve according to claim 1, it is characterized in that: described limit structure comprises the baffle plate (20) of being located at multiple dunnages (19) of nozzle body (5) upper-end surface and being located at multiple dunnages (19) top, baffle plate (20) surface is provided with the through hole that can allow flap top to pass, and described through hole is coaxial with nozzle.
4. according to the reduction valve described in claim 3, it is characterized in that: described multiple dunnages (19) are circumferentially uniform nozzle.
5. according to the reduction valve described in claim 1 to 4 any one, it is characterized in that: described flap is steel ball (10).
6. according to the reduction valve described in claim 1 to 4 any one, it is characterized in that: the lower side of described through hole is provided with chamfering.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210209955.9A CN102777649B (en) | 2012-06-25 | 2012-06-25 | Pressure reducing valve |
| PCT/CN2013/072931 WO2014000472A1 (en) | 2012-06-25 | 2013-03-20 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210209955.9A CN102777649B (en) | 2012-06-25 | 2012-06-25 | Pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102777649A CN102777649A (en) | 2012-11-14 |
| CN102777649B true CN102777649B (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210209955.9A Active CN102777649B (en) | 2012-06-25 | 2012-06-25 | Pressure reducing valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102777649B (en) |
| WO (1) | WO2014000472A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777649B (en) * | 2012-06-25 | 2014-06-04 | 宁波亚德客自动化工业有限公司 | Pressure reducing valve |
| CN103324213B (en) * | 2013-05-30 | 2016-08-10 | 顾诚 | The base structure of a kind of pressure controller and pressure controller |
| CN104534134B (en) * | 2014-11-12 | 2017-07-21 | 浙江盾安阀门有限公司 | The Jing Yin pressure-reducing valve of high-precision membrane chip |
| CN105114673B (en) * | 2015-08-20 | 2017-11-14 | 宁波市华益气动工程有限公司 | A kind of precise pressure-reducing valve |
| CN105673898A (en) * | 2016-04-01 | 2016-06-15 | 成都科盛石油科技有限公司 | Pressure-dropping main valve capable of improving outlet gas pressure regulating precision |
| TWI659171B (en) * | 2018-02-26 | 2019-05-11 | 台灣氣立股份有限公司 | Vacuum energy-saving large-capacity precision pressure regulating valve |
| CN114033880B (en) * | 2021-11-04 | 2024-02-09 | 重庆凯瑞动力科技有限公司 | High-pressure hydrogen pressure reducing valve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4106474C2 (en) * | 1991-03-01 | 1994-02-10 | Massindustrie Gmbh | Pneumatic pressure regulator with pilot control |
| JP3833323B2 (en) * | 1997-01-07 | 2006-10-11 | Ｓｍｃ株式会社 | Pressure reducing valve |
| JP3704223B2 (en) * | 1997-03-26 | 2005-10-12 | Ｓｍｃ株式会社 | Pressure reducing valve |
| CN201925552U (en) * | 2011-03-17 | 2011-08-10 | 浙江百灵气动科技有限公司 | Reducing valve |
| CN102777649B (en) * | 2012-06-25 | 2014-06-04 | 宁波亚德客自动化工业有限公司 | Pressure reducing valve |
| CN202708238U (en) * | 2012-06-25 | 2013-01-30 | 宁波亚德客自动化工业有限公司 | Precise pressure reducing valve |
-
2012
- 2012-06-25 CN CN201210209955.9A patent/CN102777649B/en active Active
-
2013
- 2013-03-20 WO PCT/CN2013/072931 patent/WO2014000472A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014000472A1 (en) | 2014-01-03 |
| CN102777649A (en) | 2012-11-14 |
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