CN110792825A - Fluid pressure stabilizing valve with end cover sealing and supporting structure - Google Patents
Fluid pressure stabilizing valve with end cover sealing and supporting structure Download PDFInfo
- Publication number
- CN110792825A CN110792825A CN201911251424.4A CN201911251424A CN110792825A CN 110792825 A CN110792825 A CN 110792825A CN 201911251424 A CN201911251424 A CN 201911251424A CN 110792825 A CN110792825 A CN 110792825A
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- valve
- end cover
- sealing
- wall
- support structure
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- 238000007789 sealing Methods 0.000 title claims abstract description 73
- 239000012530 fluid Substances 0.000 title claims abstract description 40
- 230000000087 stabilizing effect Effects 0.000 title abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 230000006835 compression Effects 0.000 claims abstract 2
- 238000007906 compression Methods 0.000 claims abstract 2
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 4
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims 1
- 238000005192 partition Methods 0.000 abstract description 13
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
Images
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
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a fluid pressure stabilizing valve with an end cover sealing support structure, which comprises a hollow valve body, a support seat, a valve core, an elastic body, an upper end cover, the end cover sealing support structure and a lower end cover. The hollow valve body is internally divided into a water inlet cavity and an air cavity by a partition plate, and the supporting seat is arranged above the partition plate. The water flow channel is formed in the valve core, the valve core comprises a valve post and a valve cap, the outer wall of the valve cap is in sealing fit with the inner wall of the air cavity, exhaust holes are formed in the wall surface of the air cavity, the elastic body is arranged between the partition plate and the valve cap and is in a compression state, the valve post penetrates through the partition plate and the supporting seat and can move up and down, and the end cover sealing and supporting structure comprises a sealing structure arranged at the bottom of the upper end cover and used for sealing the top of the valve post when the valve post runs to the highest point and a supporting ring arranged at. By arranging the end cover sealing support structure, the negative pressure generated by small overflowing clearance can be effectively resisted, and the working stroke and the pressure stabilizing pressure of the pressure stabilizing valve are ensured.
Description
Technical Field
The invention relates to the technical field of pressure reduction devices, in particular to a fluid pressure stabilizing valve with an end cover sealing and supporting structure.
Background
As shown in fig. 1, in the conventional pressure reducing valve, a gasket 100 is placed on the valve element side of the upper end cap to achieve a complete sealing state. This solution has a potential risk: when fluid flows into the pressure reducing valve from the hole of the upper end cover at a high speed, negative pressure is generated on the valve core side of the upper end cover, and the gasket 100 placed at this time is separated from the upper end cover in a negative pressure state, so that the pressure reducing valve fails to function.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a fluid pressure stabilizing valve with an end cap seal support structure, in which a support ring for supporting a seal structure is disposed at the top of a support seat, so as to solve the technical problem that a gasket of an existing pressure reducing valve proposed in the background art is easy to fall off and causes a function failure of the pressure reducing valve.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a fluid pressure stabilizing valve with an end cover sealing support structure comprises a hollow valve body, a support seat, a valve core, an elastic body, an upper end cover, an end cover sealing support structure and a lower end cover. The hollow valve body is internally divided into a water inlet cavity and an air cavity through a partition plate, the supporting seat is installed above the partition plate, the upper end cover is fixed at the upper end part of the hollow valve body, the upper end cover is provided with a water inlet hole, the lower end cover is fixedly installed at the lower end part of the hollow valve body, and the lower end cover is provided with a water outlet hole. And a water flow channel for communicating the water inlet hole and the water outlet hole is formed in the valve core along the axis direction. The case include valve post and valve cap, the outer wall of valve cap and the inner wall of air chamber are sealed to be cooperated, the exhaust hole has been seted up on the wall upper portion of air chamber. The elastic body is arranged between the partition plate and the valve cap and is in a compressed state, and the valve column penetrates through the partition plate and the supporting seat and can move up and down. The end cover sealing and supporting structure comprises a sealing structure arranged at the bottom of an upper end cover and used for sealing the top of the valve column when the valve column runs to the highest point, and a supporting ring arranged at the top of a supporting seat and used for supporting the sealing structure, wherein an overflowing hole used for communicating a water inlet hole with a water flow channel is formed in the wall surface of the supporting ring.
In one embodiment, the sealing structure is an annular boss which extends downwards from the center of the bottom of the upper end cover, the outer diameter of the annular boss is the same as the inner diameter of the support ring, and the inner wall surface of the support ring is in sealing fit with the outer wall surface of the annular boss.
In another embodiment, the sealing structure is a sealing gasket, a gasket groove is formed in the center of the bottom of the upper end cover, the sealing gasket is fixedly installed in the gasket groove, and the upper surface of the support ring abuts against the sealing gasket.
Furthermore, the upper portion of intake antrum is equipped with round annular step, the supporting seat fix on the annular step, the lower surface of supporting seat is the protrusion downwards and is formed a solid fixed ring, gu install Y type sealing washer between fixed ring's the internal face and the outer wall of valve post.
Further, valve post and valve cap be integrated into one piece structure, the valve post is established perpendicularly in valve cap top center department, rivers passageway run through completely valve post and valve cap, the Y shape sealing washer groove has been seted up on the outer wall of valve cap, the Y shape sealing washer inslot install be used for with the sealed complex Y type sealing washer of air cavity internal face.
Furthermore, the upper part and the lower part of the outer wall of the hollow valve body are respectively provided with an O-shaped sealing ring groove, and an O-shaped sealing ring is arranged in the O-shaped sealing ring groove.
Further, a water flow buffer area is arranged at the center of the bottom of the valve cap, and the cross section size of the water flow buffer area is larger than that of the water flow channel.
Furthermore, the water inlet holes are provided with a plurality of water inlet holes which are respectively staggered with the positions of the water flow channels.
Preferably, the elastic body is a spring or rubber.
Preferably, the material of the upper end cover is one of NBR, TPR, TPE and EPDM.
The invention has the following beneficial effects: the invention provides a fluid pressure stabilizing valve with an end cover sealing support structure, which is characterized in that the end cover sealing support structure is arranged, the end cover sealing support structure comprises a sealing structure arranged at the bottom of an upper end cover and used for sealing the top of a valve column when the valve column runs to the highest point and a support ring arranged at the top of a support seat and used for supporting against the sealing structure, and the top of the support ring supports against the sealing structure, so that negative pressure generated by small overflowing clearance can be effectively resisted, and the working stroke and pressure stabilizing pressure of the pressure stabilizing valve are ensured.
Drawings
Fig. 1 is a schematic cross-sectional view of a conventional pressure reducing valve.
Fig. 2 is an exploded view of the components of a pressure maintaining valve in the first embodiment.
FIG. 3 is a schematic cross-sectional view of a pressure maintaining valve according to an embodiment.
Fig. 4 is a diagram showing a pressure reduction process of the pressure maintaining valve according to the first embodiment, in which fig. 4 (a) is an initial state, fig. 4 (b) is a pressure reduction state, and fig. 4 (c) is a closed state.
Fig. 5 is a force diagram of the valve core.
Fig. 6 is a schematic perspective view of an upper end cap according to a first embodiment.
Fig. 7 is a schematic perspective view of an upper end cap according to another angle in the first embodiment.
Fig. 8 is a schematic perspective view of a support base according to an embodiment.
Fig. 9 is a schematic cross-sectional view of a pressure maintaining valve according to a second embodiment.
Description of the main component symbols: 100. a gasket; 1. a hollow valve body; 10. a partition plate; 101. an O-shaped seal ring groove; 11. a water inlet cavity; 111. an annular step; 12. an air chamber; 120. an exhaust hole; 2. a supporting seat; 21. a fixing ring; 22. a support ring; 220. an overflowing hole; 3. a valve core; 30. a water flow channel; 31. a spool; 32. a bonnet; 321. a Y-shaped seal ring groove; 322. a water flow buffer zone; 4. an elastomer; 5. an upper end cover; 50. a water inlet hole; 510. a gasket groove; 511. an annular boss; 512. sealing gaskets; 6. a lower end cover; 60. a water outlet hole; 7. an O-shaped sealing ring; 8. a Y-shaped seal ring; f1, spring pre-pressure; f2, fluid pressure.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Example one
As shown in fig. 2-8, a fluid pressure stabilizing valve with an end cap seal support structure comprises a hollow valve body 1, a support seat 2, a valve core 3, an elastic body 4, an upper end cap 5, an end cap seal support structure and a lower end cap 6. The elastic body 4 is a spring or rubber or other elastic parts, and the upper end cap 5 is made of elastic sealing material, preferably one of NBR, TPR, TPE and EPDM. The upper end cover 5 is fixed at the upper end of the hollow valve body 1 through modes such as threaded connection, a plurality of water inlet holes 50 are formed in the upper end cover 5 along the circumferential direction, the lower end cover 6 is fixedly installed at the lower end of the hollow valve body 1 through modes such as threaded connection, and a water outlet hole 60 is formed in the lower end cover 6. The upper part and the lower part of the outer wall of the hollow valve body 1 are respectively provided with an O-shaped sealing ring groove 101, and an O-shaped sealing ring 7 is arranged in the O-shaped sealing ring groove 101. The hollow valve body 1 is divided into a water inlet cavity 11 and an air cavity 12 by a partition plate 10, and a supporting seat 2 is installed above the partition plate 10. The upper portion of intake antrum 11 is equipped with round annular step 111, and supporting seat 2 is fixed on annular step 111, and the lower surface of supporting seat 2 projects downwards and forms a solid fixed ring 21.
The water flow channel 30 used for communicating the water inlet hole 50 with the water outlet hole 60 is formed in the valve core 3 along the axial direction, the valve core 3 comprises a valve column 31 and a valve cap 32, the valve column 31 and the valve cap 32 are of an integrally formed structure, the valve column 31 is vertically arranged at the center of the top of the valve cap 32, and the water flow channel 30 completely penetrates through the valve column 31 and the valve cap 32. The outer wall of the bonnet 32 is provided with a Y-shaped sealing ring groove 321, and a Y-shaped sealing ring 8 which is used for sealing and matching with the inner wall surface of the air cavity 12 is installed in the Y-shaped sealing ring groove 321. A Y-shaped sealing ring 8 is arranged between the inner wall surface of the fixing ring 21 and the outer wall surface of the valve column 31, an exhaust hole 120 is formed in the upper portion of the wall surface of the air cavity 12, the elastic body 4 is arranged between the partition plate 10 and the valve cap 32 and is in a compressed state, and the elastic body 4 is nested outside the valve column 31. A water flow relief area 322 is provided centrally at the bottom of the valve cap 32, the water flow relief area 322 having a cross-sectional dimension greater than the cross-sectional dimension of the water flow passage 30.
The valve column 31 passes through the partition plate 10 and the support seat 2 and can move up and down, and the end cover sealing support structure comprises a sealing structure which is arranged at the bottom of the upper end cover 5 and used for sealing the top of the valve column 31 when the valve column 31 runs to the highest point and a support ring 22 which is arranged at the top of the support seat 2 and used for supporting against the sealing structure. The top of the support ring 22 supports against the sealing structure, and the support ring 22 and the support base 2 are an integrated structure. The wall surface of the support ring 22 is opened with an overflowing hole 220 for communicating the water inlet hole 50 and the water flow passage 30. The sealing structure is an annular boss 511 formed by extending downwards from the center of the bottom of the upper end cover 5, the outer diameter of the annular boss 511 is the same as the inner diameter of the supporting ring 22, and the inner wall surface of the supporting ring 22 is in sealing fit with the outer wall surface of the annular boss 511.
The working principle of the embodiment is as follows:
initial state: fluid flows from the fluid inlet end, flows through the water flow channel 30 of the valve core 3 to the bottom end position of the valve core 3, and the fluid pressure has an upward acting force on the valve core 3. When the pressure is lower than F1, a pre-pressure F1 is applied to the elastic body 4, and the fluid pressure F2 is not enough to push the valve core 3 to move, so that the valve core 3 is kept in the initial state.
And (3) a reduced-pressure state: the fluid pressure F2 increases until the pressure acting on the bottom end of the valve element 3 is greater than the pre-pressure F1 of the elastic body 4, and the valve element 3 moves upward under the action of the fluid pressure F2, so that the fluid pressure flowing through the water flow passage 30 decreases, and the pressure reduction effect is achieved. Air in the air chamber 12 is exhausted through the exhaust hole 120.
And (3) closing state: when a product connected with the pressure reducing valve is blocked or closed, the valve core 3 moves upwards under the action of fluid pressure F2 until the upper surface of the valve column 31 is attached to the lower surface of the annular boss 511, the pressure stabilizing valve is closed, and the pressure of the fluid outflow end is stabilized at a certain pressure P value so as to ensure that the fluid pressure borne by the pipeline and the product is within a safety range.
Example two
As shown in fig. 9, the present embodiment is different from the first embodiment only in that: the sealing structure is a sealing gasket 512, a gasket groove 510 is formed in the center of the bottom of the upper end cover 5, the sealing gasket 512 is fixedly installed in the gasket groove 510, and the upper surface of the support ring 22 abuts against the sealing gasket 512. The rest of the structure of the present embodiment is the same as that of the first embodiment.
The working principle of the embodiment is as follows:
initial state: fluid flows from the fluid inlet end, flows through the water flow channel 30 of the valve core 3 to the bottom end position of the valve core 3, and the fluid pressure has an upward acting force on the valve core 3. When the pressure is lower than F1, a pre-pressure F1 is applied to the elastic body 4, and the fluid pressure F2 is not enough to push the valve core 3 to move, so that the valve core 3 is kept in the initial state.
And (3) a reduced-pressure state: the fluid pressure F2 increases until the pressure acting on the bottom end of the valve element 3 is greater than the pre-pressure F1 of the elastic body 4, and the valve element 3 moves upward under the action of the fluid pressure F2, so that the fluid pressure flowing through the water flow passage 30 decreases, and the pressure reduction effect is achieved. Air in the air chamber 12 is exhausted through the exhaust hole 120.
And (3) closing state: when a product connected with the pressure reducing valve is blocked or closed, the valve core 3 moves upwards under the action of the fluid pressure F2 until the upper surface of the valve column 31 is completely attached to the lower surface of the sealing gasket 512, the pressure stabilizing valve is closed, and the pressure of the fluid outflow end is stabilized at a certain pressure P value so as to ensure that the fluid pressure borne by the pipeline and the product is within a safety range.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a take end cover seal bearing structure's fluid surge damping valve which characterized in that: including cavity valve body, supporting seat, case, elastomer, upper end cover, end cap seal bearing structure and lower end cover, cavity valve body is inside to separate into intake antrum and air chamber through the baffle, and the supporting seat is installed in the baffle top, the upper end cover fix at cavity valve body upper end, the inlet opening has been seted up on the upper end cover, lower end cover fixed mounting under cavity valve body tip, the apopore has been seted up on the lower end cover, the case is inside to be offered along the axis direction and to be used for the intercommunication the rivers passageway of inlet opening and apopore, the case include valve post and valve cap, the outer wall of valve cap and the inner wall seal cooperation of air chamber, the exhaust hole has been seted up on the wall upper portion of air chamber, the elastomer establish between baffle and the valve cap and be compression state, the valve post passes baffle and supporting seat can move from top to bottom, end cap seal bearing structure including establishing in upper end cover bottom and being used for when the The supporting ring is arranged at the top of the supporting seat and used for supporting the sealing structure, and the wall surface of the supporting ring is provided with an overflowing hole used for communicating the water inlet hole with the water flow channel.
2. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: the sealing structure is an annular boss formed by extending downwards from the center of the bottom of the upper end cover, the outer diameter of the annular boss is the same as the inner diameter of the supporting ring, and the inner wall surface of the supporting ring is in sealing fit with the outer wall surface of the annular boss.
3. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: the sealing structure is a sealing gasket, a gasket groove is formed in the center of the bottom of the upper end cover, the sealing gasket is fixedly installed in the gasket groove, and the upper surface of the support ring props against the sealing gasket.
4. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: the upper portion of intake antrum is equipped with round annular step, the supporting seat fix on the annular step, the lower surface of supporting seat protrusion forms a solid fixed ring downwards, install Y type sealing washer between the internal face of solid fixed ring and the outer wall of valve post.
5. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: valve column and valve cap be integrated into one piece structure, the valve column is established perpendicularly in valve cap top center department, rivers passageway run through completely valve column and valve cap, Y shape sealing washer groove has been seted up on the outer wall of valve cap, Y shape sealing washer inslot install be used for with the sealed complex Y type sealing washer of air chamber internal face.
6. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: and the upper part and the lower part of the outer wall of the hollow valve body are respectively provided with an O-shaped sealing ring groove, and an O-shaped sealing ring is arranged in the O-shaped sealing ring groove.
7. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: the center of the bottom of the valve cap is provided with a water flow buffer area, and the cross section size of the water flow buffer area is larger than that of the water flow channel.
8. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: the water inlet holes are provided with a plurality of water inlet holes which are respectively staggered with the positions of the water flow channels.
9. A fluid regulator valve with end cap seal support according to any one of claims 1-8, wherein: the elastic body is a spring or rubber.
10. A fluid regulator valve with end cap seal support according to any one of claims 1-8, wherein: the upper end cover is made of one of NBR, TPR, TPE and EPDM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911251424.4A CN110792825B (en) | 2019-12-09 | Fluid pressure stabilizing valve with end cover sealing support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911251424.4A CN110792825B (en) | 2019-12-09 | Fluid pressure stabilizing valve with end cover sealing support structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110792825A true CN110792825A (en) | 2020-02-14 |
| CN110792825B CN110792825B (en) | 2024-09-24 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201206655Y (en) * | 2008-04-29 | 2009-03-11 | 钱国 | Auto water saving device of delaying valve |
| US7644726B1 (en) * | 2006-09-26 | 2010-01-12 | Kermit L. Achterman, & Associates, Inc. | Self-cleaning flow shut off valve |
| CN106931207A (en) * | 2017-03-23 | 2017-07-07 | 佛山吉宝信息科技有限公司 | A kind of novel fluid pressure maintaining valve |
| CN206409696U (en) * | 2017-01-13 | 2017-08-15 | 柯诗达智能科技（台州）有限公司 | A kind of built-in pressure maintaining valve |
| CN207796206U (en) * | 2018-01-22 | 2018-08-31 | 上海工程技术大学 | A kind of Running water relief valve of Small leak amount |
| CN208397378U (en) * | 2018-06-26 | 2019-01-18 | 厦门云智共创科技有限公司 | A kind of pressure reducing valve |
| CN208474572U (en) * | 2018-06-26 | 2019-02-05 | 厦门云智共创科技有限公司 | A kind of pressure reducing valve with inverse-stopping functions |
| CN211010040U (en) * | 2019-12-09 | 2020-07-14 | 谷力(厦门)科技有限公司 | Fluid pressure stabilizing valve with end cover sealing and supporting structure |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7644726B1 (en) * | 2006-09-26 | 2010-01-12 | Kermit L. Achterman, & Associates, Inc. | Self-cleaning flow shut off valve |
| CN201206655Y (en) * | 2008-04-29 | 2009-03-11 | 钱国 | Auto water saving device of delaying valve |
| CN206409696U (en) * | 2017-01-13 | 2017-08-15 | 柯诗达智能科技（台州）有限公司 | A kind of built-in pressure maintaining valve |
| CN106931207A (en) * | 2017-03-23 | 2017-07-07 | 佛山吉宝信息科技有限公司 | A kind of novel fluid pressure maintaining valve |
| CN207796206U (en) * | 2018-01-22 | 2018-08-31 | 上海工程技术大学 | A kind of Running water relief valve of Small leak amount |
| CN208397378U (en) * | 2018-06-26 | 2019-01-18 | 厦门云智共创科技有限公司 | A kind of pressure reducing valve |
| CN208474572U (en) * | 2018-06-26 | 2019-02-05 | 厦门云智共创科技有限公司 | A kind of pressure reducing valve with inverse-stopping functions |
| CN211010040U (en) * | 2019-12-09 | 2020-07-14 | 谷力(厦门)科技有限公司 | Fluid pressure stabilizing valve with end cover sealing and supporting structure |
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