CN105650317A - Film reducing valve - Google Patents
Film reducing valve Download PDFInfo
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- CN105650317A CN105650317A CN201410648237.0A CN201410648237A CN105650317A CN 105650317 A CN105650317 A CN 105650317A CN 201410648237 A CN201410648237 A CN 201410648237A CN 105650317 A CN105650317 A CN 105650317A
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- film
- valve
- fexible
- gap
- pressure reducing
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Abstract
The invention discloses a film reducing valve which comprises a valve seat and a valve cover. A valve cavity is formed between the valve seat and the valve cover. The valve cavity is provided with a valve cavity inlet and a valve cavity outlet. The film reducing valve further comprises a valve element assembly used for adjusting pressure. The valve element assembly can move back and forth and comprises a plug and a flexible film. The plug is located in the valve cavity inlet. The flexible film is mounted between the valve seat and the valve cover. The middle of the flexible film is connected with the plug. The interval between the valve cover and the flexible film is gradually increased in the direction from the exterior to the interior of the valve cover. The film reducing valve is low in cost, simple and reliable in structure, stable in performance and long in service life.
Description
Technical field
The present invention relates to pressure loading valve, especially relate to thin film pressure reducing valve.
Background technology
In sanitary bath equipment used in everyday, permanent stable water outlet is the important parameter of assessment apparatus performance height. Owing to the water supply pressure between different user may exist difference, directly affect sanitary bath equipment stable water outlet. As hydraulic pressure is excessive, exceed its use range, product water-saving function will be caused to lose, even damage product. Consequently, it is desirable to reducing valve reduces hydraulic pressure, making hydraulic pressure be in suitable use range, guarantee equipment normally uses.
At other for transmitting, same in the system of distributing liquid or gas need suitable reducing valve, by pressure-controlling in suitable scope.
The reducing valve of existing flexible thin film type adopts rubber flexible film and correspondingly core assembly to match the size of incompatible control valve door entrance, thus regulated valve resistance to flow, make the pressure of valve export correspondingly obtain adjustment, ensure that decompression stability. Compared to the reducing valve of other type, such as Bellows reducing valve and piston-type reducing valve, fexible film reducing valve has that cost is low, No leakage, sensitivity advantages of higher. But, easily aging and applicable pressure is low for rubber flexible film, when external water pressure is higher, it is easy to damage, and often need to combinationally use to wanting corresponding enhancing part, and structure relative complex, causes cost to increase.
Therefore, it is necessary to a kind of thin film pressure reducing valve of design so that the structure of thin film pressure reducing valve is simple, the pressure range being suitable for is big and long service life.
Summary of the invention
In view of this, it is an object of the invention to provide that a kind of structure is simpler, decompression performance is good, the thin film pressure reducing valve of long service life.
In order to solve the problems of the technologies described above, thin film pressure reducing valve provided by the invention comprises valve seat and valve gap, described valve gap is arranged on described valve seat, and form valve chamber between the two, described valve chamber is provided with the import of valve chamber and the outlet of valve chamber, described thin film pressure reducing valve comprises the core assembly for regulating pressure further, described core assembly can to-and-fro movement, described core assembly comprises stifled head and fexible film, described stifled head is arranged in described valve chamber import, described fexible film is arranged between described valve seat and described valve gap, the middle part of described fexible film is connected with described stifled head, spacing between described valve gap and described fexible film increases gradually along the direction of the ecto-entad of described valve gap.
Further, described fexible film comprises the film installation portion, film curved portions and the film connection section that arrange successively by outer edge to center, described film installation portion is arranged between described valve gap and described valve seat, described film connection section is connected with the upper end of described stifled head, and described film curved portions is in the arc that Open Side Down.
Further, described valve gap is provided with valve gap support portion, described valve gap support portion, in the arc corresponding with described film curved portions, is provided with gap between described film curved portions and described valve gap support portion, and described gap increases from described film installation portion gradually to described film connection section.
Further, the thickness in described film installation portion is greater than the thickness of described film curved portions, and the thickness of described film connection section is greater than the thickness of described film curved portions.
Further, described valve chamber import is tapered, and described stifled head is also tapered.
Further, described core assembly also comprises set screw, and the middle part of described stifled head is provided with stifled head through hole, and described set screw is fixedly connected with through described stifled head through hole with in the middle part of described fexible film.
Further, described fexible film being also provided with pressure regulating spring, described pressure regulating spring one end is connected on described fexible film, and the other end is connected with the lower surface of described valve gap.
Further, sealing-ring also it is provided with between described valve seat and described fexible film.
Further, described fexible film is plastic material.
Further, described plastic material is polypropylene.
Adopt technique scheme, there is following useful effect:
Thin film pressure reducing valve provided by the invention, owing to having clamped fexible film between valve gap and valve seat, fexible film can up and down reciprocatingly move in valve chamber, and the spacing between valve gap and fexible film increases gradually along ecto-entad, avoid the edge fexible film distortion amount outside valve gap excessive, tired inefficacy there is, the risk even damaged, it is to increase the work-ing life of fexible film. Meanwhile, the structure of reducing valve is simplified.
Accompanying drawing explanation
Fig. 1 is the structural representation of thin film pressure reducing valve in one embodiment of the invention.
Reference numeral synopsis:
1-valve gap; 2-valve seat; 3-valve chamber;
4-core assembly; 5-sealing-ring;
11-valve gap support portion; 21-intake vent; 22-exports passage;
31-uuper valve chamber; 32-lower valve chamber; The chamber import of 33-valve;
34-valve chamber exports; 41-fexible film; 42-blocks up head;
43-pressure regulating spring; 44-set screw;
411-film installation portion; 412-film curved portions; 413-film connection section.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further. It should be noted that, the word "front", "rear" of use is described below, direction that "left", "right", "up" and "down" refer in accompanying drawing, word " interior " and " outward " refer to the direction towards or away from particular elements geometric centre respectively.
As shown in Figure 1, the thin film pressure reducing valve that the present embodiment provides, comprise valve seat 2 and valve gap 1, valve gap 1 is arranged on valve seat 2, and form valve chamber 3 between the two, valve chamber 3 is provided with valve chamber import 33 and valve chamber outlet 34, thin film pressure reducing valve comprises the core assembly 4 for regulating pressure further, core assembly 4 reciprocally moves, core assembly 4 comprises stifled 42 and fexible film 41, it is arranged in valve chamber import 33 for stifled 42, fexible film 41 is arranged between valve seat 2 and valve gap 1, the middle part of fexible film 41 is connected with stifled 42, spacing between valve gap 1 and fexible film 41 increases gradually along the direction of the ecto-entad of valve gap 1.
The direction of above-mentioned ecto-entad specifically refers to the direction at outer its center of edge orientation of valve gap 1. Being provided with intake vent 21 and outlet passage 22 in valve seat 2, intake vent 21 is connected with valve chamber import 33, and outlet passage 22 exports 34 with valve chamber and is connected.Uuper valve chamber 31 and lower valve chamber 32 are separated in valve chamber 3 by fexible film 41. Uuper valve chamber 31 is that fexible film 41 upwards moves and provides the space of motion. Lower valve chamber 32 is for being connected intake vent 21 with outlet passage 22.
The concrete working process of above-mentioned reducing valve is, outside flowing water flows into reducing valve from the intake vent 21 of valve seat 2, and flows through valve chamber import 33 and enter in lower valve chamber 32, then enters outlet passage 22 through valve chamber outlet 34, finally flows out valve body. Owing to stifled 42 of core assembly 4 is arranged in valve chamber import 33, like this, outside flowing water needs to flow in lower valve chamber 32 by stifled gap between 42 and valve chamber import 33, and stifled the gap between 42 and valve chamber import 33 will affect the pressure of external flow water inflow lower valve chamber 32. Specifically, when valve chamber import 33 place hydraulic pressure is bigger, current flow into after lower valve chamber 32 from the gap between valve chamber import 33 and stifled 42, produce bigger pressure in lower valve chamber 32, and then fexible film 41 is applied a pressure upwards, fexible film 41 is moved up. Owing to the middle part of fexible film 41 is connected with stifled 42, when fexible film 41 moves up, stifled 42 is driven to move up, stifled gap between 42 and valve chamber import 33 is caused to reduce, add the resistance to flow at valve chamber import 33 place, thus reduce the pressure entering current in lower valve chamber 32, the top hole pressure of valve chamber outlet 34 is regulated, keeps moderate.
The outer edge of fexible film 41 is fixedly mounted between valve seat 2 and valve gap 1, is connected with stifled 42 in the middle part of it. The outer edge of fexible film 41 clamps and is fixed between valve gap 1 and valve seat 2, and its outer edge keeps maintaining static. When fexible film 41 is subject to the thrust of current in lower valve chamber 32, the middle part of fexible film 41 moves up, and pulls fexible film 41 to occur elasticity to be out of shape. Owing to fexible film 41 self has certain elasticity, after the generation elastic deformation that moves up, it produces a downward elastic force, balances the current in lower valve chamber 32 to its thrust. When external water stream disappears, fexible film 41 can return to original state.
Due to the increasing gradually on the direction of ecto-entad along valve gap 1 of the spacing between valve gap 1 and fexible film 41, make uuper valve chamber 31 minimum in the space near valve gap 1 place like this, and it is maximum in the space of valve gap 1 medium position, therefore, this kind of structural constraint deformation of fexible film 41, namely fexible film 41 is less near valve gap 1 outer peripheral distortion amount, and the distortion amount in the middle part of fexible film 41 is bigger. This kind of deformation mode, makes the outer edge deformation quantity of fexible film 41 little, and the stress reducing this position is concentrated, thus work-ing life of reducing valve that the inefficacy avoiding fexible film 41 is even broken, improved.
In the present embodiment, fexible film 41 comprises film installation portion 411 successively along by outer edge to center, film curved portions 412 and film connection section 413, film installation portion 411 is arranged between valve gap 1 and valve seat 2, film connection section 413 is connected with the upper end of stifled 42, film curved portions 412 is in the arc that Open Side Down, valve gap 1 is provided with the valve gap support portion 11 for backstop film curved portions 412 is upwards moved, valve gap support portion 11 is in the arcuate shape corresponding with film curved portions 412, it is provided with gap between film curved portions 412 and valve gap support portion 11, this gap increases from film installation portion 411 gradually to film connection section 413.
Film installation portion 411 is arranged between valve gap 1 and valve seat 2, and whole fexible film 41 is installed in valve chamber 3.It is provided with film curved portions 412 between film installation portion 411 and film connection section 413. After external water stream enters lower valve chamber 32 from valve chamber import 33, promote film connection section 413 to move up, drive film curved portions 412 that elastic deformation upwards occurs. In the process that film connection section 413 moves up, can not there is elastic deformation in himself. Film curved portions 412 adopts arc to design, and what optimize fexible film 41 is subject to power, makes stress distribution during fexible film generation deformation even, avoids stress too concentrated. On valve gap 1, it is provided with the valve gap support portion 11 corresponding with film curved portions 412 simultaneously, valve gap support portion 11 is also in the arcuate shape that Open Side Down, gap is there is between valve gap support portion 11 and film curved portions 412, this gap gives the space of fexible film 41 upwards deformation, also it is the possibility limiting fexible film 41 unlimited deformation, avoid film curved portions 412 deformation quantity excessive, ensure that the fatigue lifetime of fexible film 41.
Above-mentioned gap increases from film installation portion 411 gradually to film connection section 413, when this makes film curved portions 412 upwards move, its deformation quantity increases from film installation portion 411 gradually to film connection section 413, optimize the deformation space of film curved portions 412 further, avoid film curved portions 412 local deformaton excessive and produce lost efficacy risk.
In the present embodiment, as shown in Figure 1, the thickness in film installation portion 411 is greater than the thickness of film curved portions 412, and the thickness of film connection section 413 is greater than the thickness of film curved portions 412. Such fexible film 41 forms the structure of " thick-thin-thick ". Film installation portion 411 is thinning gradually from film installation portion 411 to film curved portions 412 with the thickness of film curved portions 412 connecting place. The thickness of film curved portions 412 and film connection section 413 connecting place becomes thick from film curved portions 412 gradually to film connection section 413. The thickness in film installation portion can much larger than the thickness of film curved portions, and the thickness of film connection section 413 can also much larger than the thickness of film curved portions 412, and the such as thickness in film installation portion is more than 5 times of the thickness of film curved portions. The thickness of film connection section 413 is also more than 5 times of the thickness of film curved portions. That such design can reduce film installation portion 411 is concentrated with the stress of film connection section 413 connecting place with film curved portions 412 connecting place and film curved portions 412, it is to increase the work-ing life of fexible film 41.
The thickness of film curved portions 412 to be determined according to the volumetric pressure in valve chamber 3, if the thickness of film curved portions 412 is too thin, then insufficient strength, easily viscous deformation occurs and lost efficacy. If the thickness of film curved portions 412 is too thick, then film curved portions 412 not easily occurs elasticity to be out of shape, thus limits film connection section 413 motion upwards, and then affects the effect of easing stress of reducing valve. In the present embodiment, the minimum thickness of fexible film 41 film curved portions 412 is not less than 0.1mm, and maximum gauge is not less than 0.8mm, and film curved portions 412 gradient thickness is concentrated not produce stress.
In the present embodiment, as shown in Figure 1, valve chamber import 33 is tapered, and its cross-sectional area reduces from down to up gradually, and stifled 42 also tapered, and its cross-sectional area reduces from down to up gradually. Valve chamber import 33 and stifled 42 employing conical by its shape, stifled like this 42 when moving up and down, so that it may to adjust the gap blocked up between 42 and valve chamber import 33, and then the resistance to flow of regulating valve chamber import 33, it is achieved reducing valve effect of easing stress.
In the present embodiment, as shown in Figure 1, core assembly 4 also comprises set screw 44, and the middle part of stifled 42 is provided with stifled head through hole, and set screw 44 is fixedly connected with through stifled head through hole with in the middle part of fexible film. Fexible film 41 and stifled 42 employing screw connecting modes, for convenience detach. When fexible film 41 or stifled 42 appearance are damaged, it is convenient for changing. Set screw 44 can tapping screw, when adopting tapping screw, stifled head through hole does not need to pre-set screw thread, decreases the processing workload of stifled 42, reduces production cost, install simultaneously and facilitate yet.
In the present embodiment, as shown in Figure 1, fexible film 41 being also provided with pressure regulating spring 43, pressure regulating spring 43 one end is connected on fexible film 41, and the other end is connected with the lower surface of valve gap 1. pressure regulating spring 43 one end is connected on film connection section 413, and the other end is connected on valve gap 1. after the current of the bigger hydraulic pressure in outside enter lower valve chamber 32 from valve chamber import 33, upwards be there is bigger movement in promotion film connection section 413, make the deformation quantity of fexible film 41 likely exceed its safety range and lose efficacy. in order to avoid this kind of failure risk, the reducing valve in the present embodiment can be made again to meet hydraulic pressure regulate simultaneously, pressure regulating spring 43 is now set on fexible film 41, when on fexible film 41 to motion, fexible film 41 is applied a downward elastic force by pressure regulating spring 43, this downward elastic force can offset or part suffered by balancing flexible film 41 to lifting force, reduce the deformation quantity of fexible film 41, ensure that elastic deformation occurs fexible film 41, so both can ensure that the safety performance of reducing valve, the pressure scope of application of Enlarging decompression valve simultaneously.
Certain pressure regulating spring 43 can also arrange adjustment button, it is used for regulating pressure regulating spring 43 to the pre-pressure of fexible film 41, thus facilitates reducing valve to require to regulate effect of easing stress according to different decompressions.
In the present embodiment, between valve seat 2 and fexible film 41, also it is provided with sealing-ring 5. Sealing-ring 5 improves the stopping property of valve seat 2 with fexible film 41 junction.
In the present embodiment, above-mentioned fexible film 41 is plastic material. Specifically, plastic material can be polypropylene material, and polypropylene material has good flexural fatigue performance, has again good acid resistance, alkali resistance and oil-proofness and the performance of other chemical substances resistance to simultaneously. Therefore, the stable chemical performance of polypropylene material, thus not easily aging, and cheap. Certainly, fexible film 41 can also nylon, flexible polyvinyl chloride or other similar stable chemical performance material.
Above-described is only principle and the preferred embodiment of the present invention. It is noted that for the person of ordinary skill of the art, on the basis of the principle of the invention, it is also possible to make other modification some, protection scope of the present invention should be also considered as.
Claims (10)
1. a thin film pressure reducing valve, comprise valve seat and valve gap, and form valve chamber between the two, described valve chamber is provided with the import of valve chamber and the outlet of valve chamber, it is characterized in that, described thin film pressure reducing valve comprises the core assembly for regulating pressure further, described core assembly can to-and-fro movement, described core assembly comprises stifled head and fexible film, described stifled head is arranged in described valve chamber import, described fexible film is arranged between described valve seat and described valve gap, the middle part of described fexible film is connected with described stifled head, spacing between described valve gap and described fexible film increases gradually along the direction of the ecto-entad of described valve gap.
2. thin film pressure reducing valve according to claim 1, it is characterized in that, described fexible film comprises the film installation portion, film curved portions and the film connection section that arrange successively by outer edge to center, described film installation portion is arranged between described valve gap and described valve seat, described film connection section is connected with the upper end of described stifled head, and described film curved portions is in the arc that Open Side Down.
3. thin film pressure reducing valve according to claim 2, it is characterized in that, described valve gap is provided with valve gap support portion, described valve gap support portion is in the arc corresponding with described film curved portions, being provided with gap between described film curved portions and described valve gap support portion, described gap increases from described film installation portion gradually to described film connection section.
4. thin film pressure reducing valve according to claim 3, it is characterised in that, the thickness in described film installation portion is greater than the thickness of described film curved portions, and the thickness of described film connection section is greater than the thickness of described film curved portions.
5. thin film pressure reducing valve according to claim 1, it is characterised in that, described valve chamber import is tapered, and described stifled head is also tapered.
6. thin film pressure reducing valve according to claim 1, it is characterised in that, described core assembly also comprises set screw, and the middle part of described stifled head is provided with stifled head through hole, and described set screw is fixedly connected with through described stifled head through hole with in the middle part of described fexible film.
7. thin film pressure reducing valve according to claim 1, it is characterised in that, described fexible film is also provided with pressure regulating spring, described pressure regulating spring one end is connected on described fexible film, and the other end is connected with the lower surface of described valve gap.
8. thin film pressure reducing valve according to claim 1, it is characterised in that, also it is provided with sealing-ring between described valve seat and described fexible film.
9. thin film pressure reducing valve according to claim 1, it is characterised in that, described fexible film is plastic material.
10. thin film pressure reducing valve according to claim 9, it is characterised in that, described plastic material is polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410648237.0A CN105650317B (en) | 2014-11-14 | 2014-11-14 | A kind of thin film pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410648237.0A CN105650317B (en) | 2014-11-14 | 2014-11-14 | A kind of thin film pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105650317A true CN105650317A (en) | 2016-06-08 |
| CN105650317B CN105650317B (en) | 2018-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410648237.0A Active CN105650317B (en) | 2014-11-14 | 2014-11-14 | A kind of thin film pressure reducing valve |
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| CN (1) | CN105650317B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106693105A (en) * | 2016-12-27 | 2017-05-24 | 江苏苏云医疗器材有限公司 | Sensitive blood return infusion apparatus |
| CN113795695A (en) * | 2019-05-09 | 2021-12-14 | 利拉伐控股有限公司 | Membrane for moving a valve disk of a control valve and control valve |
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| JP2005227860A (en) * | 2004-02-10 | 2005-08-25 | Keihin Corp | Pressure reducing valve |
| US20060266961A1 (en) * | 2003-07-06 | 2006-11-30 | Boris Frenkel | Diaphragm and hydraulically-operated valve using same |
| CN101072964A (en) * | 2004-12-10 | 2007-11-14 | 喜开理株式会社 | Diaphragm valve |
| CN101790657A (en) * | 2007-08-29 | 2010-07-28 | 株式会社京浜 | Pressure reducing valve |
| CN103363149A (en) * | 2012-03-28 | 2013-10-23 | 骊住株式会社 | Diaphragm valve body of flow control valve |
| CN203516874U (en) * | 2013-09-25 | 2014-04-02 | 周裕佳 | Constant-pressure valve |
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2014
- 2014-11-14 CN CN201410648237.0A patent/CN105650317B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060266961A1 (en) * | 2003-07-06 | 2006-11-30 | Boris Frenkel | Diaphragm and hydraulically-operated valve using same |
| JP2005227860A (en) * | 2004-02-10 | 2005-08-25 | Keihin Corp | Pressure reducing valve |
| CN101072964A (en) * | 2004-12-10 | 2007-11-14 | 喜开理株式会社 | Diaphragm valve |
| CN101790657A (en) * | 2007-08-29 | 2010-07-28 | 株式会社京浜 | Pressure reducing valve |
| CN103363149A (en) * | 2012-03-28 | 2013-10-23 | 骊住株式会社 | Diaphragm valve body of flow control valve |
| CN203516874U (en) * | 2013-09-25 | 2014-04-02 | 周裕佳 | Constant-pressure valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106693105A (en) * | 2016-12-27 | 2017-05-24 | 江苏苏云医疗器材有限公司 | Sensitive blood return infusion apparatus |
| CN113795695A (en) * | 2019-05-09 | 2021-12-14 | 利拉伐控股有限公司 | Membrane for moving a valve disk of a control valve and control valve |
| US11746923B2 (en) | 2019-05-09 | 2023-09-05 | Delaval Holding Ab | Membrane for a moving a valve disk of a control valve, and a control valve |
| CN113795695B (en) * | 2019-05-09 | 2024-02-02 | 利拉伐控股有限公司 | Membrane for moving a valve disk of a control valve and control valve |
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| Publication number | Publication date |
|---|---|
| CN105650317B (en) | 2018-10-19 |
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