CN203516893U - Constant pressure fully-closed type pressure reducing valve - Google Patents
Constant pressure fully-closed type pressure reducing valve Download PDFInfo
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- CN203516893U CN203516893U CN201320575650.XU CN201320575650U CN203516893U CN 203516893 U CN203516893 U CN 203516893U CN 201320575650 U CN201320575650 U CN 201320575650U CN 203516893 U CN203516893 U CN 203516893U
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Abstract
A constant pressure fully-closed type pressure reducing valve comprises a valve case. A medium inlet is formed in one side of the valve case, and a medium outlet is formed in one side opposite to the medium inlet. A regulating spring is arranged on the top inside the valve case, a valve disk is arranged at the lower end of the regulating spring, and the periphery of the valve disk and the inner wall of the valve case are sealed through a membrane. A main valve spring is arranged on the bottom of the valve case, and a valve seat is arranged on the main valve spring. A baffle is arranged above the medium inlet, an auxiliary valve disk is connected above the baffle, feedback holes are formed in the portions, above and below the auxiliary valve disk, of the valve case, and a power cavity is formed above the auxiliary valve disk. A valve seat connection plate is arranged between the medium inlet and medium outlet, the valve seat is connected below the valve seat connection plate, and the valve seat connection plate divides the space between the baffle and the valve seat into two equal portions which are a first chamber and a second chamber respectively. After media enter the valve case, enter the second chamber after the pressure Pj of the media is reduced through the valve seat connection plate and the valve seat, and then enter the feedback holes, the pressure of the upper portion and the lower portion of the auxiliary valve disk is uniform, the regulating spring and the valve disk carry out indifference regulation on the media, and the regulation effect is stable.
Description
Technical field
The utility model relates to level pressure totally enclosed type reduction valve, and it is a kind of level pressure load, pouring-in, totally-enclosed, secondary valve formula reduction valve, belongs to valve field.
Background technique
Valve is the controlling component in fluid delivery system, has cut-off, adjusting, water conservancy diversion, prevents the functions such as adverse current, voltage stabilizing, shunting or overflow pressure relief.For the valve of liquid control system, from the simplest stop valve to very complicated robot control system(RCS) various valves used, its kind and specification are quite various.Valve can be used for controlling flowing of all kinds fluids such as air, water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium.Valve is also divided into cast iron valve according to material, cast steel valve, stainless valve, Cr-Mo steel valve, Chrominm-molybdenum-vanadium steel valve, dual phase steel valve, Plastic valve, the nonstandard customized valve material that waits.
Reduction valve is, by regulating, inlet pressure is reduced to the outlet pressure of a certain needs, and relies on the energy of medium itself, makes outlet pressure automatically keep stable valve.From hydromechanical viewpoint, reduction valve is a throttle element that local resistance can change, and by changing orifice size, the kinetic energy of flow velocity and fluid is changed, and causes the different pressure losses, thereby reaches the object of decompression.Then rely on the adjusting of controlling with regulating system, the fluctuation of downstream pressure and spring force are balanced each other, make downstream pressure keep constant in certain margin of error.
Reduction valve of a great variety, the function playing is basic identical, but has different defects, and traditional reduction valve seldom can be applicable to steam medium and liquid medium simultaneously.
Summary of the invention
In order to solve the problem of above-mentioned existence, the utility model discloses a kind of level pressure totally enclosed type reduction valve, this reduction valve can be applicable to the decompression of steam medium and liquid medium simultaneously, and Applicable scope is wider.
Level pressure totally enclosed type reduction valve, comprise valve casing, one side of valve casing is medium import, a relative side is media outlet, valve casing inside top is provided with Regulation spring, the lower end of Regulation spring is provided with valve disc, the surrounding of valve disc is by diaphragm and valve casing inner wall sealing, the bottom of valve casing is provided with main spool spring, is provided with valve seat above main spool spring, and valve seat is positioned at the below of medium import, medium import top is provided with baffle plate, baffle plate top is connected with secondary valve disc, on the upper and lower valve casing of secondary valve disc, is equipped with feedback hole, and secondary valve disc top forms power cavity.
Described valve casing inwall is provided with a circle back-up ring, and back-up ring is positioned at valve seat top, medium import below.
Described feedback hole lays respectively at secondary valve disc upper and lower, forms Yi Ge airflow chamber between feedback hole.
In the middle of described medium import and media outlet, be provided with valve seat connecting plate, the below connecting valve seat of valve seat connecting plate, valve seat connecting plate is divided into impartial two halves by the space between baffle plate and valve seat, is respectively the first Room and the second Room, and baffle plate is divided into upper and lower two spaces by valve casing inner space.
The utility model, annexation is compact, when medium enters in valve casing from medium import, has certain pressure medium Pj, and pressure medium Pj is after the decompression of valve seat connecting plate and valve seat, and with pressure medium, Pc discharges from media outlet.Pressure medium Pj is from medium import enters into the first Room, the first chamber internal pressure increases, the valve seat of the first below, Room is pressed down, valve seat tilts, medium enters the second Room, medium is after the second indoor pressure is able to baffle plate upwards to eject, baffle plate tilts, medium enters into baffle plate top, medium can enter power cavity by feedback valve, on secondary valve disc downforce consistent after, medium is discharged from media outlet, the pressure medium Pc of outlet reduces with respect to the pressure medium Pj of import, pressure balance value in power cavity is determined by the tension force of Regulation spring, this cover reduction valve can reduce pressure as definite value.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model,
Reference numerals list: 1-positioning block, 2-Regulation spring, 3-valve disc, 4-diaphragm, 5-auxiliary-seat, 6-auxiliary valve spring, 7-power cavity, 8-feedback hole, 9-secondary valve disc, 10-back-up ring, 11-valve seat, 12-main spool spring, 13-baffle plate, 14-valve casing, the import of 15-medium, 16-media outlet, 17-valve seat connecting plate, the 18-the first chamber, the 19-the second chamber, 20-airflow chamber.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model.Should understand following embodiment and only for the utility model is described, be not used in restriction scope of the present utility model.It should be noted that, word 'fornt', 'back', " left side ", " right side ", "up" and "down" that use is described below refer to the direction in accompanying drawing, and word " interior " and " outward " refer to respectively the direction towards or away from specific features geometrical center.
Visible by reference to the accompanying drawings, this level pressure totally enclosed type reduction valve, comprise valve casing 14, one side of valve casing 14 is medium import 15, a relative side is media outlet 16, valve casing 14 inside top are provided with Regulation spring 2, the upper end of Regulation spring 2 is provided with positioning block 1, the lower end of Regulation spring 2 is provided with valve disc 3, the surrounding of valve disc 3 is by diaphragm 4 and valve casing 14 inner wall sealings, the bottom of valve casing 14 is provided with main spool spring 12, main spool spring 12 is provided with valve seat 3 above, valve seat 3 is positioned at the below of medium import 15, medium import 15 tops are provided with baffle plate 13, baffle plate 13 tops are connected with secondary valve disc 9, on the upper and lower valve casing 14 of secondary valve disc 9, be equipped with feedback hole 8, secondary valve disc 9 tops form power cavity 7.The utility model, valve casing 3 is places that medium reduces pressure, also be the passage of medium circulation, 2 pairs of valve discs 11 of Regulation spring have certain pressure, it is non differential regulation that Regulation spring 2 coordinates valve disc 3, it is droop control that auxiliary valve spring 6 coordinates power cavity 7, and pressure medium Pj is after twice decompression regulates, with the pressure medium Pc discharge of media outlet 16.Positioning block 1 applies definite value pressure to Regulation spring 2, and feedback hole 8 is input into pressure to power cavity 7, and the power that auxiliary valve spring 6 is subject to is the pressure in power cavity 7, is changing value.Droop control and non differential regulation set, in one, realize quick and precisely reducing regulating pressure medium.
Described valve casing 14 inwalls are provided with a circle back-up ring 10, and back-up ring 10 is positioned at valve seat 11 tops, medium import 15 belows.Back-up ring 10 can block the degree that valve seat 11 tilts, and avoids valve seat 11 angled transition not reset.The pressure medium of secondary valve disc 9 belows enters into secondary valve disc 9 tops by feedback hole 8, make on secondary valve disc 9 downforce consistent, pressure reach consistent after, medium is discharged from media outlet 16, pressure medium Pc is for discharging pressure medium, and pressure medium Pc pressure is less than inlet-pressure pressure medium Pj.
Described feedback hole 8 lays respectively at secondary valve disc 9 upper and lowers, forms Yi Ge airflow chamber 20 between feedback hole 8.Airflow chamber's 20 energy buffer mediums, avoid pressure medium to leak.
Described medium import 15 and the middle valve seat connecting plate 17 that is provided with of media outlet 16, the below connecting valve seat 11 of valve seat connecting plate 17, valve seat 11 connecting plates are divided into impartial two halves by the space between baffle plate 13 and valve seat 11, be respectively the first Room 18 and the second Room 19, baffle plate 13 is divided into upper and lower two spaces by valve casing 14 inner spaces.Valve seat connecting plate 17 block medias are directly discharged from media outlet 16, allow medium pass through valve seat 11 and reduce pressure, and by feedback hole 8, auxiliary-seat 5, valve disc 3 decompressions, finally discharge.
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of above-mentioned technological means, also comprises the technological scheme being comprised of above technical characteristics combination in any.
Claims (4)
1. level pressure totally enclosed type reduction valve, it is characterized in that comprising valve casing, one side of valve casing is medium import, a relative side is media outlet, valve casing inside top is provided with Regulation spring, the lower end of Regulation spring is provided with valve disc, the surrounding of valve disc is by diaphragm and valve casing inner wall sealing, the bottom of valve casing is provided with main spool spring, is provided with valve seat above main spool spring, and valve seat is positioned at the below of medium import, medium import top is provided with baffle plate, baffle plate top is connected with secondary valve disc, on the upper and lower valve casing of secondary valve disc, is equipped with feedback hole, and secondary valve disc top forms power cavity.
2. level pressure totally enclosed type reduction valve according to claim 1, is characterized in that described valve casing inwall is provided with a circle back-up ring, and back-up ring is positioned at valve seat top, medium import below.
3. level pressure totally enclosed type reduction valve according to claim 1, is characterized in that described feedback hole lays respectively at secondary valve disc upper and lower, forms Yi Ge airflow chamber between feedback hole.
4. level pressure totally enclosed type reduction valve according to claim 1, it is characterized in that being provided with valve seat connecting plate in the middle of described medium import and media outlet, the below connecting valve seat of valve seat connecting plate, valve seat connecting plate is divided into impartial two halves by the space between baffle plate and valve seat, be respectively the first Room and the second Room, baffle plate is divided into upper and lower two spaces by valve casing inner space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320575650.XU CN203516893U (en) | 2013-09-17 | 2013-09-17 | Constant pressure fully-closed type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320575650.XU CN203516893U (en) | 2013-09-17 | 2013-09-17 | Constant pressure fully-closed type pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516893U true CN203516893U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320575650.XU Expired - Fee Related CN203516893U (en) | 2013-09-17 | 2013-09-17 | Constant pressure fully-closed type pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516893U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453192A (en) * | 2013-09-17 | 2013-12-18 | 宁波合生制动科技有限公司 | Constant pressure full-closed reducing valve |
| CN105003706A (en) * | 2015-08-17 | 2015-10-28 | 成都国光电子仪表有限责任公司 | Natural gas pressure reducing valve with pressure reducing ratio being convenient to adjust |
| CN105179768A (en) * | 2015-08-17 | 2015-12-23 | 成都国光电子仪表有限责任公司 | Natural gas pressure reducing valve beneficial to improving gas exhaust pressure control precision |
-
2013
- 2013-09-17 CN CN201320575650.XU patent/CN203516893U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453192A (en) * | 2013-09-17 | 2013-12-18 | 宁波合生制动科技有限公司 | Constant pressure full-closed reducing valve |
| CN103453192B (en) * | 2013-09-17 | 2018-02-02 | 宁波合生制动科技有限公司 | Level pressure totally enclosed type pressure-reducing valve |
| CN105003706A (en) * | 2015-08-17 | 2015-10-28 | 成都国光电子仪表有限责任公司 | Natural gas pressure reducing valve with pressure reducing ratio being convenient to adjust |
| CN105179768A (en) * | 2015-08-17 | 2015-12-23 | 成都国光电子仪表有限责任公司 | Natural gas pressure reducing valve beneficial to improving gas exhaust pressure control precision |
| CN105003706B (en) * | 2015-08-17 | 2017-10-31 | 成都国光电子仪表有限责任公司 | A kind of Pressure reducing ratio is easy to the natural gas pressure-reducing valve of regulation |
| CN105179768B (en) * | 2015-08-17 | 2017-10-31 | 成都国光电子仪表有限责任公司 | A kind of natural gas pressure-reducing valve for being beneficial to improve outlet pressure control accuracy |
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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: 20140402 Termination date: 20140917 |
|
| EXPY | Termination of patent right or utility model |