CN220204724U - Valve seat sealing structure with graphite filler - Google Patents
Valve seat sealing structure with graphite filler Download PDFInfo
- Publication number
- CN220204724U CN220204724U CN202321024056.1U CN202321024056U CN220204724U CN 220204724 U CN220204724 U CN 220204724U CN 202321024056 U CN202321024056 U CN 202321024056U CN 220204724 U CN220204724 U CN 220204724U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- cover
- metal ring
- graphite filler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 45
- 239000010439 graphite Substances 0.000 title claims abstract description 45
- 239000000945 filler Substances 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 title claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 238000012856 packing Methods 0.000 claims description 23
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Taps Or Cocks (AREA)
Abstract
The utility model discloses a valve seat sealing structure with graphite filler, which comprises a valve cover and a ball body, wherein a valve seat ring is arranged between the valve cover and the ball body, a circle of metal ring is sleeved on the valve seat ring, one end of the metal ring is abutted against one end of the graphite filler, one side of the metal ring, facing the graphite filler, is provided with a plurality of arc-shaped grooves, a fluid channel is arranged between the two arc-shaped grooves, a pressing sleeve is arranged on the valve cover, and one end of the pressing sleeve abuts against the other end of the graphite filler. The valve seat sealing structure increases a grooved metal ring between graphite filler and a valve seat ring, so that no matter how large the graphite filler pretightening force and the fluid pressure are, the double-piston effect can not be lost, and the service life of the ball valve is greatly prolonged.
Description
Technical Field
The utility model relates to the field of ball valves, in particular to a valve seat sealing structure with graphite filler.
Background
The valve seat sealing structure of most of the existing hard sealing ball valves is of a single-piston structure or a double-piston structure with only one simple metal gasket. The single piston configuration can seal against pressure from either upstream of the valve or downstream of the valve, but does not seal against pressure in the chamber in the valve. For some severe conditions, fluid is not allowed to enter the conduit upstream or downstream after the conduit valve is closed. The single piston valve seat is no longer suitable. If a simple metal gasket is added between the graphite packing and the valve seat ring, when packing pretightening force is high or fluid pressure is high, sealing can be formed between the metal gasket and the valve seat ring and the graphite packing, so that the valve seat ring and the graphite packing lose double-piston effect.
Disclosure of Invention
The utility model aims to provide a valve seat sealing structure with graphite filler, and a slotted metal ring is added between the graphite filler and a valve seat ring, so that no matter how large the pretightening force and the fluid pressure of the graphite filler are, the double-piston effect is not lost, and the service life of a ball valve is greatly prolonged.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a disk seat seal structure with graphite packing, includes valve gap and spheroid, be provided with the valve seat circle between valve gap and the spheroid, the cover has the round metal ring on the valve seat circle, the one end butt of metal ring and graphite packing, the metal ring is provided with a plurality of arc recesses towards one side of graphite packing, and is provided with fluid channel between two arc recesses, be provided with on the valve gap and press the cover, press the one end of cover to support the other end of graphite packing.
Further, a plurality of first grooves are formed in the valve cover, and a valve cover head spring is embedded in the first grooves.
Further, a plurality of second grooves are formed in the valve cover, a valve cover tail spring is embedded in the second grooves, one end of the valve cover tail spring is fixedly arranged in the second grooves, and the other end of the valve cover tail spring extends out of the second grooves and is in butt joint with the pressing sleeve.
Further, the pressing sleeve is L-shaped.
Further, a rubber ring is arranged between the metal ring and the valve cover seat.
The valve seat sealing structure with graphite filler provided by the utility model has the advantages that:
according to the valve seat sealing structure, the metal ring with the grooves is additionally arranged between the graphite packing and the valve seat ring, so that fluid in the middle cavity of the valve can reach the inner sealing surface of the graphite packing, and the sealing can be realized on the pressure from the middle cavity, thereby achieving the double-piston effect. And the metal ring is provided with a groove, even if the pretightening force of the graphite filler is increased or the fluid pressure is increased, the sealing between the metal ring and the valve seat ring or the graphite filler is not caused, the double-piston effect of the valve is ensured not to be invalid, and the service life of the ball valve is greatly prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a partial cross-sectional view of a valve seat structure according to the present utility model;
FIG. 2 is a schematic view of a metal ring according to the present utility model;
reference numerals in the drawings illustrate: 1. a sphere; 2. a valve seat ring; 3. a metal ring; 4. a graphite filler; 5. pressing the sleeve; 6. a valve cover tail spring; 7. a valve cover; 8. a valve cap head spring; 9. arc-shaped grooves 10 and fluid channels; 11. a rubber ring.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by one of ordinary skill in the art without inventive faculty, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1-2, an embodiment of the present utility model is provided: the utility model provides a disk seat seal structure with graphite packing, includes valve gap 7 and spheroid 1, be provided with valve seat circle 2 between valve gap 7 and the spheroid 1, wherein the cover has round metal ring 3 and with the graphite packing 4 of metal ring 3 one end butt on the valve seat circle 2, the internal diameter of metal ring 3 is greater than the external diameter of valve seat circle 2, simultaneously, the internal diameter fixed surface of metal ring 3 is provided with round rubber ring, the rubber ring is provided with on the internal diameter surface of metal ring 3 through the fixed mode of gluing to make metal ring 3 can more inseparable cover on valve seat circle 2.
Meanwhile, the metal ring 3 is closer to the sphere 1 relative to the graphite filler 4, one side of the metal ring 3 facing the graphite filler 4 is provided with a plurality of arc grooves which are not communicated with each other, in the embodiment, six sections are provided, and the angles of the intervals between every two sections are the same.
And a fluid channel is arranged between the two arc-shaped grooves, and fluid can circulate through the metal ring 3 through the fluid channel and the arrangement of the arc-shaped grooves.
One end of the arc-shaped groove of the metal ring 3 is abutted against one end of the graphite packing 4, a rubber ring is arranged at the other end of the arc-shaped groove, and the surface of the metal ring 3 is fixedly arranged on the rubber ring in an adhering mode, so that the rubber ring is arranged between the metal ring 3 and the valve cover 7 seat, friction between the metal ring 3 and the valve cover 7 seat is further prevented, and the service life of the metal ring 3 is prolonged.
Simultaneously, be provided with on the valve gap 7 and press the cover 5, press the one end of cover 5 to support the graphite packing 4 and do not with the one end of metal ring butt, simultaneously, set up a plurality of second recesses on the valve gap 7, all embedded valve gap tail spring 6 in every second recess, just in the fixed second recess that is provided with of one end of valve gap tail spring 6, the other end stretches out the second recess and presses the cover 5 butt to press the cover 5 through valve gap 7 tail spring 6 butt, press the cover 5 to support again and hold graphite packing 4, fix a position graphite packing 4.
In this embodiment, the valve cover 7 is provided with a plurality of first grooves, the first grooves are embedded with a valve cover head spring 8, one end of the valve cover head spring 8 is fixedly disposed in the first grooves, and the other end is connected with the valve cover seat. The pressing sleeve 5 is L-shaped, so that the pressing sleeve 5 is convenient to install.
During specific installation, the valve cover tail spring 6 and the valve cover head spring 8 are installed at corresponding positions of the valve cover 7, the pressing sleeve 5 is installed in the valve cover 7, the metal ring 3 and the graphite packing 4 are installed in the valve cover 7, the valve seat ring 2 is installed in the valve cover 7, and the sealing surface of the valve seat ring is attached to the ball body 1.
When pressure exists in the upstream or downstream of the valve, the medium forms pressure difference between the outer diameter of the graphite packing 4 and the sealing point of the valve seat ring 2 and the ball body 1, and the valve seat ring 2 is pushed to be attached to the ball body 1, so that sealing is realized. When the valve middle cavity has pressure, the medium can reach the inner diameter of the graphite packing 4 through the arc-shaped groove and the fluid channel on the metal ring 3, and the pressure difference at the moment also pushes the valve seat ring 2 to be attached to the ball body 1, so that sealing is realized. Therefore, no matter how large the pretightening force and the medium pressure of the graphite filler are, the double-piston effect cannot be lost, the tightness is ensured, and the service life of the ball valve is greatly prolonged.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The apparatus embodiments described above are merely illustrative, wherein elements illustrated as separate elements may or may not be physically separate, and elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present utility model without undue burden.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (5)
1. A valve seat sealing structure with graphite filler, characterized in that: including valve gap and spheroid, be provided with the valve seat circle between valve gap and the spheroid, the cover has the round metal ring on the valve seat circle, the one end butt of metal ring and graphite filler, the metal ring is provided with a plurality of arc recesses towards one side of graphite filler, and is provided with fluid channel between two arc recesses, be provided with on the valve gap and press the cover, press the one end of cover to support the other end of graphite filler.
2. A valve seat sealing structure with graphite packing as claimed in claim 1, wherein: a plurality of first grooves are formed in the valve cover, and a valve cover head spring is embedded in the first grooves.
3. A valve seat sealing structure with graphite packing as claimed in claim 1, wherein: a plurality of second grooves are formed in the valve cover, a valve cover tail spring is embedded in the second grooves, one end of the valve cover tail spring is fixedly arranged in the second grooves, and the other end of the valve cover tail spring extends out of the second grooves and is in butt joint with the pressing sleeve.
4. A valve seat sealing structure with graphite packing as claimed in claim 3, wherein: the pressing sleeve is L-shaped.
5. A valve seat sealing structure with graphite packing as claimed in claim 1, wherein: a rubber ring is arranged between the metal ring and the valve cover seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321024056.1U CN220204724U (en) | 2023-05-03 | 2023-05-03 | Valve seat sealing structure with graphite filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321024056.1U CN220204724U (en) | 2023-05-03 | 2023-05-03 | Valve seat sealing structure with graphite filler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220204724U true CN220204724U (en) | 2023-12-19 |
Family
ID=89145405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321024056.1U Active CN220204724U (en) | 2023-05-03 | 2023-05-03 | Valve seat sealing structure with graphite filler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220204724U (en) |
-
2023
- 2023-05-03 CN CN202321024056.1U patent/CN220204724U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |