CN204213426U - Interior pressure Self-operated pressure reducing valve - Google Patents
Interior pressure Self-operated pressure reducing valve Download PDFInfo
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- CN204213426U CN204213426U CN201420562661.9U CN201420562661U CN204213426U CN 204213426 U CN204213426 U CN 204213426U CN 201420562661 U CN201420562661 U CN 201420562661U CN 204213426 U CN204213426 U CN 204213426U
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Abstract
The utility model discloses a kind of interior pressure Self-operated pressure reducing valve, valve body is provided with side by side valve ante-chamber and valve back cavity, the top of valve ante-chamber and valve back cavity is provided with diaphragm chamber, diaphragm chamber and valve back cavity all cylindrical and diaphragm chamber and valve back cavity are coaxially arranged, described valve hole part comprises valve core plate, metal diaphragm and diaphragm support plate, described metal diaphragm covers the opening of diaphragm chamber upper end, valve core plate is located at the overthe openings on valve back cavity top, sealing configuration is provided with between the opening of valve core plate and valve back cavity upper end, described valve gap is in the cylindrical shape that Open Side Down, button is located at above metal diaphragm, described pressure regulating part is located in valve gap.The reduction valve convolution diaphragm that it efficiently solves prior art is easily aging, non-refractory, high pressure, the problem that working life is short, the utility model diaphragm not easily aging, high temperature resistant, high pressure resistant, long service life and can carry out pressure adjustment to before valve, has very high use value.
Description
Technical field
The utility model relates to reduction valve technical field, particularly relates to a kind of interior pressure Self-operated pressure reducing valve.
Background technique
The Self-operated pressure reducing valve of prior art, usually be provided with pneumatic rubber film and spring, it utilizes the pressure difference of air bladder both sides, causes deformation of thin membrane and spring-compressed or reply, thus be cyclically with movable valve plug opening and closing, thus reach the object making fluid step-down, voltage stabilizing.Self-contained pressure regulator utilizes by tune medium self-energy as power source, introduce actuating mechanism controls valve element position, change circulation area, change the pressure reduction at two ends, thus make pressure stability at setting value, therefore have and be active in one's movements, good airproof performance, the features such as pressure surge is little, and return difference is little, are widely used in the automatic control occasion to gas, liquid pressure-reducing voltage stabilizing in various industry equipment.Publication date on December 1st, 2012, the Chinese patent of publication number CN201661740 U discloses a kind of Self-operated internal feedback miniature reducing valve, comprise valve body, stifle, valve hole part, seal spool preloading spring, convolution diaphragm, valve gap, pressure setting Regulation spring, adjustable lever etc., employing no-arbitrary pricing designs, pressure setting Regulation spring and convolution diaphragm actuator adopt built-in, internal feedback after employing valve, the split-type design of pressure setting Regulation spring and seal spool preloading spring, and eliminate the annexes such as outside PRESSURE PIPE.The deficiency of this reduction valve is that convolution diaphragm is easily aging, non-refractory, high pressure, and working life is short, in addition, this reduction valve adopts pressure after valve, the working method of downstream pressure greatly then throttle down, cannot upstream pressure be regulated, cannot meet and carry out pressure controlled requirement to before valve.
Model utility content
The purpose of this utility model is that the reduction valve convolution diaphragm for solving prior art is easily aging, non-refractory, high pressure, the problem that working life is short, provides a kind of diaphragm not easily aging, high temperature resistant, high pressure resistant, long service life and can to carrying out pressure controlled interior pressure Self-operated pressure reducing valve before valve.
The utility model is the concrete technological scheme solving the problems of the technologies described above employing: pressure Self-operated pressure reducing valve in a kind of, comprise valve body, valve hole part, valve gap and pressure regulating part, described valve body is provided with side by side valve ante-chamber and valve back cavity, the top of valve ante-chamber and valve back cavity is provided with diaphragm chamber, valve ante-chamber and valve back cavity all by the opening on top and diaphragm chamber through, the sidewall of described valve ante-chamber is provided with fluid inlet, the sidewall of valve back cavity is provided with fluid output, described diaphragm chamber and valve back cavity all cylindrical and diaphragm chamber and valve back cavity are coaxially arranged, the upper end of diaphragm chamber is opening, described valve hole part comprises valve core plate, metal diaphragm and diaphragm support plate, described valve core plate is fixed on below metal diaphragm, diaphragm support plate is fixed on above metal diaphragm, described metal diaphragm covers the opening of diaphragm chamber upper end, sealing gasket is provided with between metal diaphragm and valve body, described valve core plate is located at the overthe openings on valve back cavity top, sealing configuration is provided with between the opening of valve core plate and valve back cavity upper end, described valve gap is in the cylindrical shape that Open Side Down, button is located at above metal diaphragm, described pressure regulating part is located in valve gap, pressure regulating part comprises spring, spring seat and adjusting screw rod, the lower end of spring is connected on diaphragm support plate, the upper end of spring abuts with spring seat, valve gap top is provided with screw, described adjusting screw rod is connected with spring seat through screw, the sidewall of valve gap is provided with vent, adjusting screw rod is provided with locking nut.Pressure taking structure form before the valve that the utility model adopts valve ante-chamber to be communicated with diaphragm chamber all the time, fluid flow to valve ante-chamber by fluid inlet, act on the metal diaphragm of diaphragm chamber by the opening of valve ante-chamber upper end, produce an active force upwards and be arranged on the downward Spring balanced that the spring above diaphragm produces, when hydrodynamic pressure increases, the active force acted on diaphragm is upwards greater than the elastic force of spring, spring is compressed, valve core plate moves, valve open, fluid flow to valve back cavity through valve, release portion hydrodynamic pressure, when the compression rebounding force that the pressure of fluid produces active force on stainless steel diaphragm and spring before valve balances again, spool is closed, cut off fluid.The metal diaphragm good springiness that the utility model adopts, long service life, and high pressure resistant, high temperature.Solve convolution diaphragm in prior art easily aging, non-refractory, high pressure, the problem that working life is short.
As preferably, valve ante-chamber cross section is c-shaped, and arrange around valve back cavity, valve back cavity is positioned at the central position of valve ante-chamber C shape structure.The opening end on its top of valve ante-chamber of C shape, close to circular, can make diaphragm surrounding uniform force.
As preferably, metal diaphragm is stainless steel planar diaphragm, and its thickness is 0.1 millimeter to 0.2 millimeter.The diaphragm thickness that the utility model adopts is thinner, has better elasticity.
As preferably, the sealing gasket between metal diaphragm and valve body is Expanded graphite packing ring.Expanded graphite packing ring can guarantee the sealing between metal diaphragm and valve body.
As preferably, valve core plate bottom surface is provided with circular groove, be provided with teflon seal ring in described circular groove, the edge of opening of valve body valve back cavity upper end is provided with the annular flange flange corresponding with described circular groove, the sealing configuration described in described teflin ring and annular flange flange are formed.The utility model adopts embedded teflon technique, monoblock teflon is embedded valve core plate rear car put down, the sealing of valve core plate is also improved while can reducing valve core plate part dimension, when valve core plate closes, tetrafluoroethylene and the annular flange flange of annular fit, and guarantee the sealing after valve closing.
As preferably, the bottom of valve body valve back cavity is provided with opening, and described opening is provided with access cover, is provided with seal ring between described access cover and opening.If body cavity contains the foreign material such as particle, foul, need not valve hole part be dismantled, directly open access cover and just can carry out on-bne repair to reduction valve, greatly improve working efficiency.
As preferably, valve gap top is provided with cover, and upper end and the locking nut of adjusting screw rod are positioned at cover, and cover and valve gap are spirally connected.The running parameter that cover can prevent from touching adjusting screw rod during work and change valve, ensures that reduction valve normally works.
As preferably, the lower end surface of adjusting screw rod is provided with blind hole, and described spring seat upper surface is provided with the concave surface corresponding with described blind hole, is provided with a steel ball between blind hole and concave surface, and adjusting screw rod is connected with spring seat by described steel ball.When adjusting screw rod rotates, steel ball serves as driving medium, and make adjusting screw rod and upper spring seat direct friction not occur, the frictional force of steel ball and adjusting screw rod and upper spring seat is less, convenient adjustment.
As preferably, the fluid inlet on valve body and fluid outlet are equipped with joint, are provided with seal ring between joint and valve body.
The beneficial effects of the utility model are, the reduction valve convolution diaphragm that it efficiently solves prior art is easily aging, non-refractory, high pressure, the problem that working life is short, the utility model diaphragm not easily aging, high temperature resistant, high pressure resistant, long service life and can carry out pressure adjustment to before valve, has very high use value.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is a kind of partial enlarged drawing of the present utility model.
In figure, 1. valve body, 2. valve ante-chamber, 3. valve back cavity, 4. diaphragm chamber, 5. fluid inlet, 6. fluid output, 7. valve core plate, 8. metal diaphragm, 9. diaphragm support plate, 10. sealing gasket, 11. valve gaps, 12. springs, 13. spring seats, 14. adjusting screw rods, 15. vents, 16. locking nuts, 17. tetrafluoroethylene seal rings, 18. annular flange flange, 19. access covers, 20. covers, 21. steel balls, 22. joints.
Embodiment
Also by reference to the accompanying drawings the technical solution of the utility model is further described below by embodiment.
Embodiment 1:
In the embodiment 1 shown in Fig. 1, pressure Self-operated pressure reducing valve in a kind of, comprise valve body, valve hole part, valve gap and pressure regulating part, described valve body 1 is provided with side by side valve ante-chamber 2 and valve back cavity 3, the top of valve ante-chamber and valve back cavity is provided with diaphragm chamber 4, valve ante-chamber and valve back cavity all by the opening on top and diaphragm chamber through, described valve ante-chamber cross section is c-shaped, arrange around valve back cavity, valve back cavity is positioned at the central position of valve ante-chamber C shape structure, the sidewall of valve ante-chamber is provided with fluid inlet 5, and the sidewall of valve back cavity is provided with fluid output 6, and described diaphragm chamber and valve back cavity all cylindrical and diaphragm chamber and valve back cavity are coaxially arranged, and the upper end of diaphragm chamber is opening, described valve hole part comprises valve core plate 7, metal diaphragm 8 and diaphragm support plate 9, and described metal diaphragm is stainless steel planar diaphragm, and its thickness is 0.15 millimeter, described valve core plate is fixed on below metal diaphragm, diaphragm support plate is fixed on above metal diaphragm, described metal diaphragm covers the opening of diaphragm chamber upper end, Expanded graphite packing ring 10 is provided with between metal diaphragm and valve body, described valve core plate is located at the overthe openings on valve back cavity top, sealing configuration is provided with between the opening of valve core plate and valve back cavity upper end, described valve core plate bottom surface is provided with circular groove, teflon seal ring 17 is provided with in described circular groove, the edge of opening of valve body valve back cavity upper end is provided with the annular flange flange 18(corresponding with described circular groove and sees Fig. 2), sealing configuration described in described teflin ring and annular flange flange are formed.Described valve gap 11 is in the cylindrical shape that Open Side Down, button is located at above metal diaphragm, described pressure regulating part is located in valve gap, pressure regulating part comprises spring 12, spring seat 13 and adjusting screw rod 14, and the lower end of spring is connected on diaphragm support plate, and the upper end of spring abuts with spring seat, valve gap top is provided with screw, described adjusting screw rod is connected with spring seat through screw, and the sidewall of valve gap is provided with vent 15, and adjusting screw rod is provided with locking nut 16.
On valve body, the bottom of valve back cavity is provided with opening, and described opening is provided with access cover 19, is provided with seal ring between described access cover and opening; Described valve gap top is provided with cover 20, and upper end and the locking nut of adjusting screw rod are positioned at cover, and cover and valve gap are spirally connected; Fluid inlet on valve body and fluid outlet are equipped with joint 22, are provided with seal ring between joint and valve body.
Embodiment 2
The lower end surface of embodiment 2 adjusting screw rod is provided with blind hole, and described spring seat upper surface is provided with the concave surface corresponding with described blind hole, is provided with a steel ball 21 between blind hole and concave surface, and adjusting screw rod is connected with spring seat by described steel ball, and all the other are identical with embodiment 1.
During utility model works, fluid flow to valve ante-chamber by fluid inlet, act on the metal diaphragm of diaphragm chamber by the opening of valve ante-chamber upper end, produce an active force upwards and be arranged on the downward Spring balanced that the spring above diaphragm produces, when hydrodynamic pressure increases, the active force acted on diaphragm is upwards greater than the elastic force of spring, spring is compressed, and valve core plate moves, valve open, fluid flow to valve back cavity through valve, release portion hydrodynamic pressure; When the active force of fluid before valve to stainless steel diaphragm is less than the bounce-back of spring, valve core plate closes gradually, and fluid flow reduces gradually until the active force of fluid and the reaction force of spring balance, and iterative cycles like this, reaches the object making fluid pressure.
In addition to the implementation; in the scope disclosed in claims of the present utility model and specification; technical characteristics of the present utility model or technical data can carry out reselecting and combining; thus form new embodiment; these are all those skilled in the art without the need to carrying out creative work and attainable, and the embodiment that therefore these the utility model are not described in detail also should be considered as specific embodiment of the utility model and within protection domain of the present utility model.
Claims (9)
1. pressure Self-operated pressure reducing valve in a kind, comprise valve body, valve hole part, valve gap and pressure regulating part, it is characterized in that: described valve body (1) is provided with side by side valve ante-chamber (2) and valve back cavity (3), the top of valve ante-chamber and valve back cavity is provided with diaphragm chamber (4), valve ante-chamber and valve back cavity all by the opening on top and diaphragm chamber through, the sidewall of described valve ante-chamber is provided with fluid inlet (5), the sidewall of valve back cavity is provided with fluid output (6), described diaphragm chamber and valve back cavity all cylindrical and diaphragm chamber and valve back cavity are coaxially arranged, the upper end of diaphragm chamber is opening, described valve hole part comprises valve core plate (7), metal diaphragm (8) and diaphragm support plate (9), described valve core plate is fixed on below metal diaphragm, diaphragm support plate is fixed on above metal diaphragm, described metal diaphragm covers the opening of diaphragm chamber upper end, sealing gasket (10) is provided with between metal diaphragm and valve body, described valve core plate is located at the overthe openings on valve back cavity top, sealing configuration is provided with between the opening of valve core plate and valve back cavity upper end, described valve gap (11) is in the cylindrical shape that Open Side Down, button is located at above metal diaphragm, described pressure regulating part is located in valve gap, pressure regulating part comprises spring (12), spring seat (13) and adjusting screw rod (14), the lower end of spring is connected on diaphragm support plate, the upper end of spring abuts with spring seat, valve gap top is provided with screw, described adjusting screw rod is connected with spring seat through screw, the sidewall of valve gap is provided with vent (15), adjusting screw rod is provided with locking nut (16).
2. interior pressure Self-operated pressure reducing valve according to claim 1, is characterized in that, described valve ante-chamber cross section is c-shaped, and arrange around valve back cavity, valve back cavity is positioned at the central position of valve ante-chamber C shape structure.
3. interior pressure Self-operated pressure reducing valve according to claim 1, is characterized in that, described metal diaphragm is stainless steel planar diaphragm, and its thickness is 0.1 millimeter to 0.2 millimeter.
4. interior pressure Self-operated pressure reducing valve according to claim 1, is characterized in that, described sealing gasket is Expanded graphite packing ring.
5. interior pressure Self-operated pressure reducing valve according to claim 1, it is characterized in that, described valve core plate bottom surface is provided with circular groove, teflon seal ring (17) is provided with in described circular groove, the edge of opening of valve body valve back cavity upper end is provided with the annular flange flange (18) corresponding with described circular groove, the sealing configuration described in described teflin ring and annular flange flange are formed.
6. interior pressure Self-operated pressure reducing valve according to claim 1, is characterized in that, the bottom of described valve body valve back cavity is provided with opening, and described opening is provided with access cover (19), is provided with seal ring between described access cover and opening.
7. interior pressure Self-operated pressure reducing valve according to claim 1, is characterized in that, described valve gap top is provided with cover (20), and upper end and the locking nut of adjusting screw rod are positioned at cover, and cover and valve gap are spirally connected.
8. pressure Self-operated pressure reducing valve according to any one of claim 1-7, it is characterized in that, the lower end surface of adjusting screw rod is provided with blind hole, described spring seat upper surface is provided with the concave surface corresponding with described blind hole, be provided with a steel ball (21) between blind hole and concave surface, adjusting screw rod is connected with spring seat by described steel ball.
9. pressure Self-operated pressure reducing valve according to any one of claim 1-7, is characterized in that, the fluid inlet on valve body and fluid outlet are equipped with joint (22), are provided with seal ring between joint and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420562661.9U CN204213426U (en) | 2014-09-28 | 2014-09-28 | Interior pressure Self-operated pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420562661.9U CN204213426U (en) | 2014-09-28 | 2014-09-28 | Interior pressure Self-operated pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204213426U true CN204213426U (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420562661.9U Expired - Fee Related CN204213426U (en) | 2014-09-28 | 2014-09-28 | Interior pressure Self-operated pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204213426U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352711A (en) * | 2015-11-02 | 2016-02-24 | 新昌县利永达制冷机械有限公司 | Constant pressure valve and detection device and detection method thereof |
| CN105697854A (en) * | 2016-04-01 | 2016-06-22 | 成都科盛石油科技有限公司 | Pilot device for main pressure reducing valve |
| CN107990032A (en) * | 2017-11-20 | 2018-05-04 | 余庆敏 | A kind of adjustable gas constant pressure valve |
| CN110260001A (en) * | 2019-07-08 | 2019-09-20 | 宁波国创机车装备有限公司 | A kind of spring loaded check valve |
| CN112392423A (en) * | 2020-12-23 | 2021-02-23 | 大庆油田有限责任公司 | Pulse well washing device for water injection well |
-
2014
- 2014-09-28 CN CN201420562661.9U patent/CN204213426U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352711A (en) * | 2015-11-02 | 2016-02-24 | 新昌县利永达制冷机械有限公司 | Constant pressure valve and detection device and detection method thereof |
| CN105352711B (en) * | 2015-11-02 | 2018-03-02 | 浙江利永达制冷机械有限公司 | A kind of constant pressure valve and its detection means and detection method |
| CN105697854A (en) * | 2016-04-01 | 2016-06-22 | 成都科盛石油科技有限公司 | Pilot device for main pressure reducing valve |
| CN107990032A (en) * | 2017-11-20 | 2018-05-04 | 余庆敏 | A kind of adjustable gas constant pressure valve |
| CN110260001A (en) * | 2019-07-08 | 2019-09-20 | 宁波国创机车装备有限公司 | A kind of spring loaded check valve |
| CN112392423A (en) * | 2020-12-23 | 2021-02-23 | 大庆油田有限责任公司 | Pulse well washing device for water injection well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20150928 |
|
| EXPY | Termination of patent right or utility model |