CN204213363U - High pressure butterfly valve - Google Patents
High pressure butterfly valve Download PDFInfo
- Publication number
- CN204213363U CN204213363U CN201420639904.4U CN201420639904U CN204213363U CN 204213363 U CN204213363 U CN 204213363U CN 201420639904 U CN201420639904 U CN 201420639904U CN 204213363 U CN204213363 U CN 204213363U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- valve
- butterfly
- plate
- ring
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 13
- 239000010439 graphite Substances 0.000 claims abstract description 13
- 210000004907 gland Anatomy 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model relates to high pressure butterfly valve, comprise valve body, butterfly plate, valve rod and the drive unit be in transmission connection with valve rod, spherical valve seat ring, flexible graphite sealing ring, intermediate plate and pressing plate, described butterfly plate side is set with metal o-ring and gland, described metal o-ring is pressed on butterfly plate by gland, described butterfly plate opposite side arranges rotating shaft through hole, described valve rod comprises the first valve rod, second valve rod and the 3rd valve rod three parts, described first valve rod and the 3rd valve rod are all cylindrical bodys, described second valve rod is prism, described rotating shaft through hole be provided with respectively with the first valve rod, second valve rod, the first through hole that 3rd valve rod is corresponding, second through hole and third through-hole, described intermediate plate is provided with multiple spring groove towards the side of pressing plate, spring is provided with in described spring groove, the utility model can reduce the wearing and tearing of butterfly plate sealing surface and valve body sealing surface, do not need again fixing with the fastening piece such as locating stud or bolt location, improve the ability of the utility model two way sealed.
Description
Technical field
The utility model relates to a kind of butterfly valve, particularly high pressure butterfly valve.
Background technique
Butterfly valve obtains and uses widely in engineering pipeline conveying, wherein eccentric-butterfly-valve obtains increasing application, comprise single eccentric-butterfly-valve, double eccentric butterfly valve and three eccentric butterfly valve, then it is inadequate that unreasonable on existing butterfly valve structure result in its working life, such as, rotating shaft is fixed by locating stud or bolt and butterfly plate, loosening phenomenon can be there is after long in use, the pressure of butterfly plate sealing surface and valve body sealing surface reduces under the backpressure of valve body medium, these all can reduce the sealability of butterfly valve, reduce the working life of butterfly valve.
Summary of the invention
The purpose of this utility model is to provide a kind of two way sealed, long service life and the high pressure butterfly valve of stable performance.
The technological scheme realizing the utility model object is as follows:
High pressure butterfly valve, comprise valve body, butterfly plate, valve rod and the drive unit be in transmission connection with valve rod, also comprise spherical valve seat ring, flexible graphite sealing ring, intermediate plate and pressing plate, described butterfly plate side is set with metal o-ring and gland, described metal o-ring is pressed on butterfly plate by gland, described butterfly plate opposite side arranges rotating shaft through hole, described valve rod comprises the first valve rod, second valve rod and the 3rd valve rod three parts, described first valve rod and the 3rd valve rod are all cylindrical bodys, described second valve rod is prism, the incircle being projected as the projection of the second valve rod of described first valve rod, the circumcircle being projected as the projection of the second valve rod of described 3rd valve rod, described rotating shaft through hole be provided with respectively with the first valve rod, second valve rod, the first through hole that 3rd valve rod is corresponding, second through hole and third through-hole, described spherical valve seat ring is sleeved in valve body, described flexible graphite sealing ring is arranged between spherical valve seat ring and intermediate plate, described pressing plate is fixedly connected with valve body, described pressing plate is by spherical valve seat ring, flexible graphite sealing ring and intermediate plate constrain in valve body, described intermediate plate is provided with multiple spring groove towards the side of pressing plate, spring is provided with in described spring groove.
Preferably, in order to reduce the degree of wear in metal o-ring sealing surface and spherical valve seat seal face, the sealing surface of described spherical valve seat ring is sphere, and the sealing surface of described metal o-ring is eccentric spherical.
Preferably, in order to the twisting stress on rotatingshaft be applied to uniformly on butterfly plate, the part that described first valve rod is in valve body is set with lining, and the part that the 3rd valve rod is in valve body is set with lower lining.
Preferably, in order to increase the anti-pressure ability of butterfly plate, described butterfly plate is provided with many stiffening ribs.
After adopting said structure, the utility model can reduce the wearing and tearing of butterfly plate sealing surface and valve body sealing surface, it is rotatable butterfly plate that valve rod stretches in rotating shaft through hole, do not need again fixing with the fastening piece such as locating stud or bolt location, under the acting in conjunction of spherical valve seat ring, flexible graphite sealing ring, intermediate plate, pressing plate and spring, improve the ability of the utility model two way sealed.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation in A portion in Fig. 1.
Fig. 3 is the structural representation of butterfly plate of the present utility model.
Fig. 4 is the structural representation of valve rod of the present utility model.
Fig. 5 is the plan view of valve rod of the present utility model
Fig. 6 is the structural representation of stiffening rib on butterfly plate of the present utility model.
In figure: 1 is valve body, 2 is butterfly plate, and 3 is valve rod, and 4 is drive unit, 5 is spherical valve seat ring, and 6 is flexible graphite sealing ring, and 7 is intermediate plate, and 8 is pressing plate, 9 is metal o-ring, and 10 is gland, and 11 is the first valve rod, and 12 is the second valve rod, 13 is the 3rd valve rod, and 14 is the first through hole, and 15 is the second through hole, 16 is third through-hole, and 17 is spring groove, and 18 is spring groove, 19 is upper lining, and 20 is lower lining, and 21 is stiffening rib.
Embodiment
The utility model high pressure butterfly valve comprises valve body 1 as shown in Figure 1, butterfly plate 2, valve rod 3, the drive unit 4 be in transmission connection with valve rod 3, spherical valve seat ring 5, flexible graphite sealing ring 6, intermediate plate 7 and pressing plate 8, described butterfly plate 2 side is set with metal o-ring 9 and gland 10, described metal o-ring 9 by gland 10 by bolt presses on butterfly plate 2, , the sealing surface of described spherical valve seat ring 5 is sphere, the sealing surface of described metal o-ring 9 is eccentric spherical, described butterfly plate 2 opposite side arranges rotating shaft through hole, described valve rod 3 comprises the first valve rod 11, second valve rod 12 and the 3rd valve rod 13 3 parts, described first valve rod 11 and the 3rd valve rod 13 are all cylindrical bodys, described second valve rod 12 is in prism, the incircle being projected as the projection of the second valve rod 12 of described first valve rod 11, the circumcircle being projected as the projection of the second valve rod 12 of described 3rd valve rod 13, described rotating shaft through hole be provided with respectively with the first valve rod 11, second valve rod 12, first through hole 14 of the 3rd valve rod 13 correspondence, second through hole 15 and third through-hole 16, described spherical valve seat ring 5 is sleeved in valve body 1, described flexible graphite sealing ring 6 is arranged between spherical valve seat ring 5 and intermediate plate 7, described pressing plate 8 is fixedly connected with valve body 1, described pressing plate 8 is by spherical valve seat ring 5, flexible graphite sealing ring 6 and intermediate plate 7 constrain in valve body 1, described intermediate plate 7 is provided with multiple spring groove 17 towards the side of pressing plate 8, spring 18 is provided with in described spring groove 17, the part that described first valve rod 11 is in valve body 1 is set with lining 19, the part that 3rd valve rod 13 is in valve body 1 is set with lower lining 20, in order to increase the anti-pressure ability of butterfly plate 2, described butterfly plate 2 is provided with many stiffening ribs 21.
Above-mentioned second valve rod can be cuboid, also can be tri-prismoid.
During utility model works, valve rod stretches into rotating shaft through hole and butterfly plate can be driven to rotate, be decided to be fixing without the need to the fastening piece such as locating stud or bolt, spherical valve seat ring, flexible graphite sealing ring, intermediate plate, under the acting in conjunction of pressing plate and spring, ensure that the sealing surface of spherical valve seat ring and the sealing surface of metal o-ring also can keep enough pressure under medium opposition, ensure the sealing of butterfly valve, the sealing surface of spherical valve seat ring and metal o-ring adopts eccentric spherical structure, decrease the wearing and tearing of butterfly valve spherical valve seat ring and metal o-ring in the process of open and close, upper lining and lower lining be arranged so that the twisting stress on valve rod is evenly distributed on butterfly plate, avoid valve rod and rotating shaft through hole because of stressed excessive and occur damaging, stiffening rib increases the anti-pressure ability of butterfly plate, the utility model improves the stability of butterfly valve, increase the working life of butterfly valve.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (4)
1. high pressure butterfly valve, comprise valve body, butterfly plate, valve rod and the drive unit be in transmission connection with valve rod, it is characterized in that: also comprise spherical valve seat ring, flexible graphite sealing ring, intermediate plate and pressing plate, described butterfly plate side is set with metal o-ring and gland, described metal o-ring is pressed on butterfly plate by gland, described butterfly plate opposite side arranges rotating shaft through hole, described valve rod comprises the first valve rod, second valve rod and the 3rd valve rod three parts, described first valve rod and the 3rd valve rod are all cylindrical bodys, described second valve rod is prism, the incircle being projected as the projection of the second valve rod of described first valve rod, the circumcircle being projected as the projection of the second valve rod of described 3rd valve rod, described rotating shaft through hole be provided with respectively with the first valve rod, second valve rod, the first through hole that 3rd valve rod is corresponding, second through hole and third through-hole, described spherical valve seat ring is sleeved in valve body, described flexible graphite sealing ring is arranged between spherical valve seat ring and intermediate plate, described pressing plate is fixedly connected with valve body, described pressing plate is by spherical valve seat ring, flexible graphite sealing ring and intermediate plate constrain in valve body, described intermediate plate is provided with multiple spring groove towards the side of pressing plate, spring is provided with in described spring groove.
2. high pressure butterfly valve according to claim 1, is characterized in that: the sealing surface of described spherical valve seat ring is sphere, and the sealing surface of described metal o-ring is eccentric spherical.
3. high pressure butterfly valve according to claim 2, is characterized in that: the part that described first valve rod is in valve body is set with lining, and the part that the 3rd valve rod is in valve body is set with lower lining.
4. according to the high pressure butterfly valve in claim 1,2 or 3 described in any one, it is characterized in that: described butterfly plate is provided with many stiffening ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420639904.4U CN204213363U (en) | 2014-10-30 | 2014-10-30 | High pressure butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420639904.4U CN204213363U (en) | 2014-10-30 | 2014-10-30 | High pressure butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204213363U true CN204213363U (en) | 2015-03-18 |
Family
ID=52982035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420639904.4U Expired - Fee Related CN204213363U (en) | 2014-10-30 | 2014-10-30 | High pressure butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204213363U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465381A (en) * | 2015-12-31 | 2016-04-06 | 宁波丰基特种阀门有限公司 | Butterfly valve |
| CN107477193A (en) * | 2017-09-26 | 2017-12-15 | 凯喜姆阀门有限公司 | A kind of spherical valve seat butterfly valve |
| CN119435732A (en) * | 2025-01-08 | 2025-02-14 | 福建省真特阀门科技有限公司 | A fast opening and closing zero-friction spherical sealing butterfly valve |
-
2014
- 2014-10-30 CN CN201420639904.4U patent/CN204213363U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465381A (en) * | 2015-12-31 | 2016-04-06 | 宁波丰基特种阀门有限公司 | Butterfly valve |
| CN105465381B (en) * | 2015-12-31 | 2018-03-27 | 宁波市天基隆智控技术有限公司 | Butterfly valve |
| CN107477193A (en) * | 2017-09-26 | 2017-12-15 | 凯喜姆阀门有限公司 | A kind of spherical valve seat butterfly valve |
| CN119435732A (en) * | 2025-01-08 | 2025-02-14 | 福建省真特阀门科技有限公司 | A fast opening and closing zero-friction spherical sealing butterfly valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20201030 |