CN203670830U - Labyrinth type two-way sealing butterfly valve - Google Patents
Labyrinth type two-way sealing butterfly valve Download PDFInfo
- Publication number
- CN203670830U CN203670830U CN201320741106.8U CN201320741106U CN203670830U CN 203670830 U CN203670830 U CN 203670830U CN 201320741106 U CN201320741106 U CN 201320741106U CN 203670830 U CN203670830 U CN 203670830U
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- CN
- China
- Prior art keywords
- valve
- seal ring
- ring
- valve seat
- butterfly valve
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 28
- 230000002457 bidirectional effect Effects 0.000 claims description 13
- 230000006835 compression Effects 0.000 abstract 4
- 238000007906 compression Methods 0.000 abstract 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model provides a labyrinth type two-way sealing butterfly valve. The labyrinth type two-way sealing butterfly valve comprises a valve body, a valve plate, a valve seat, a sealing ring and a compression ring, wherein the valve seat and the valve body are integrally formed; the valve plate is located inside the valve body; the sealing ring is arranged at the position where the valve plate makes contact with the valve seat; the sealing ring is fixed to the valve seat through the compression ring; the sealing ring is of a labyrinth structure and comprises a U-type structure; the two edges of the U-type structure are not the same in length; a first protrusion is arranged at the top end of the outer side of the short edge; a second protrusion is arranged at the bottom end of the outer side of the long edge; an opening of the U-type structure of the sealing ring faces the compression ring; the compression ring is provided with a groove corresponding to the sealing ring. The labyrinth type two-way sealing butterfly valve can ensure the sealing performance when compressed in the forward direction and in the backward direction, can bear higher pressure, and is simple in structure and reasonable in design.
Description
Technical field
The utility model relates to a kind of butterfly valve, relates in particular to a kind of mazy type bidirectional sealed butterfly valve.
Background technique
Along with the development of valve industry, increasing client needs the positive and negative bidirectional bearing of valve.And the arc-shaped seal surface structure of original soft sealing butterfly valve cannot meet the requirement of reverse pressure-bearing, in the time bearing positive pressure, seal ring presses to valve seat under the effect of pressure medium, realize sealing, in the time bearing backpressure, seal ring has the trend that departs from valve seat under the effect of pressure medium, easily leaks, and can not realize reliable sealing.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of simple in structure, reasonable in design, the mazy type bidirectional sealed butterfly valve that can realize two way sealed.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of mazy type bidirectional sealed butterfly valve is provided, comprise valve body, valve plate, valve seat, seal ring and pressure ring, described valve seat and described valve body are one-body molded, described valve plate is positioned at described valve inner, the place contacting with described valve seat at described valve plate is provided with described seal ring, described seal ring is fixed on described valve seat by described pressure ring, described seal ring is maze-type structure, comprise a U-shaped structure, and two edge lengths of U-shaped structure are not etc., outside its minor face, top end is provided with the first projection, its long limit outer lower end is provided with the second projection, the opening surface of the U-shaped structure of described seal ring is to described pressure ring, described pressure ring is provided with the groove corresponding with described seal ring.
Described the second projection is large compared with the width of the first projection.
Described valve seat is provided with a groove, and described seal ring is fixed in described groove by described pressure ring.
Between sealing surface described in described valve plate and horizontal plane, have an angle α, the size of α is between 10-15 °.
The top of pressure ring 5 is higher than the top of valve seat 3.
Advantage and the good effect that the utlity model has are: mazy type bidirectional sealed butterfly valve of the present utility model adopts the seal ring with maze-type structure, can make valve in the time of forward pressure-bearing and reverse pressure-bearing, all can guarantee sealability, can bear elevated pressures, simple in structure, reasonable in design.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is part-structure schematic diagram of the present utility model.
In figure:
1, valve body 2, valve plate 3, valve seat 4, seal ring
5, pressure ring 6, the first projection 7, the second projection 8, groove
9, valve rod 10, U-shaped structure 11, groove
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As depicted in figs. 1 and 2, the utility model embodiment's mazy type bidirectional sealed butterfly valve, comprise valve body 1, valve plate 2, valve seat 3, seal ring 4 and pressure ring 5, described valve seat 3 is one-body molded with described valve body 1, described valve plate 2 is positioned at described valve body 1 inside, be provided with described seal ring 4 at described valve plate 2 and described valve seat 3 contacting points, described seal ring 4 is fixed on described valve seat 3 by described pressure ring 5, described seal ring 4 is maze-type structure, comprise a U-shaped structure 10, and two edge lengths of U-shaped structure 10 are not etc., outside its minor face, top end is provided with the first projection 6, its long limit outer lower end is provided with the second projection 7, the opening of the U-shaped structure 10 of described seal ring 4 is relative with described pressure ring 5, described pressure ring 5 is provided with the groove 11 corresponding with described seal ring 4.
Described the second projection 7 is large compared with the width of the first projection 6.
Described valve seat 3 is provided with a groove 8, and described seal ring 4 is fixed in described groove 8 by described pressure ring 5.
Between the sealing surface of described valve plate 2 and horizontal plane, have an angle α, the size of α is between 10-15 °.
The top of pressure ring 5 is higher than the top of valve seat 3.
In use, the U-shaped structure base of seal ring 4 and minor face are arranged in the groove 8 of valve seat 3, and by pressure ring 5, seal ring 4 is locked on valve seat 3, when valve plate 2 in closed condition is, the second projection 7 of seal ring 4 contacts with the sealing surface of valve plate 2, the moment of torsion that valve rod 9 transmits makes to produce enough seal pressures between the sealing surface of valve plate 2 and valve seat 3, make valve seal, in the time that the left side of valve plate 2 is medium high pressure side, be that valve plate 2 is while bearing positive pressure, because the top of pressure ring 5 is higher than the top of valve seat 3, make seal ring 4 tightly be pressed in the sealing surface of valve plate 2 and upper by pressure medium, guarantee good sealing, in the time that medium is reverse, pressure medium acts on the opposite side of seal ring 4, seal ring 4 produces reversal deformation, owing to having angle between the sealing surface of valve plate 2 and horizontal plane, seal ring 4 is pressed on the sealing surface of valve plate 2, form seal pressure to stop dielectric leakage, realize valve and all can guarantee sealability forward and reverse.
Above embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present invention.All equalization variation and improvement etc. of doing according to the utility model scope, within all should still belonging to this patent covering scope.
Claims (6)
1. mazy type bidirectional sealed butterfly valve, comprise valve body (1), valve plate (2), valve seat (3), seal ring (4) and pressure ring (5), described valve seat (3) is one-body molded with described valve body (1), described valve plate (2) is positioned at described valve body (1) inside, the place contacting with described valve seat (3) at described valve plate (2) is provided with described seal ring (4), described seal ring (4) is fixed on described valve seat (3) by described pressure ring (5), it is characterized in that: described seal ring (4) is maze-type structure, comprise a U-shaped structure (10), and two edge lengths of U-shaped structure (10) are not etc., outside its minor face, top end is provided with the first projection (6), its long limit outer lower end is provided with the second projection (7), the opening surface of the U-shaped structure (10) of described seal ring (4) is to described pressure ring (5), described pressure ring (5) is provided with the groove (11) corresponding with described seal ring (4).
2. mazy type bidirectional sealed butterfly valve according to claim 1, is characterized in that: described the second projection (7) is large compared with the width of the first projection (6).
3. mazy type bidirectional sealed butterfly valve according to claim 1, is characterized in that: described valve seat (3) is provided with a groove (8), and described seal ring (4) is fixed in described groove (8) by described pressure ring (5).
4. mazy type bidirectional sealed butterfly valve according to claim 1, is characterized in that: the face that described valve plate (2) contacts with described seal ring (4) is sealing surface, has an angle α between described sealing surface and horizontal plane, and the size of α is between 10-15 °.
5. mazy type bidirectional sealed butterfly valve according to claim 1, is characterized in that: the top of pressure ring (5) is higher than the top of valve seat (3).
6. mazy type bidirectional sealed butterfly valve according to claim 1, is characterized in that: pressure ring (5) is positioned at a lower side of the sealing surface of valve plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320741106.8U CN203670830U (en) | 2013-11-20 | 2013-11-20 | Labyrinth type two-way sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320741106.8U CN203670830U (en) | 2013-11-20 | 2013-11-20 | Labyrinth type two-way sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670830U true CN203670830U (en) | 2014-06-25 |
Family
ID=50967128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320741106.8U Expired - Lifetime CN203670830U (en) | 2013-11-20 | 2013-11-20 | Labyrinth type two-way sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670830U (en) |
-
2013
- 2013-11-20 CN CN201320741106.8U patent/CN203670830U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 301802 No. 3 Road, nine yuan industrial park, Da Bai street, Baodi District, Tianjin Patentee after: TIANJIN KRS VALVE Co.,Ltd. Address before: 301802 No. three road, nine yuan industrial park, Baodi District, Tianjin. Patentee before: TIANJIN K.R.S VALVE Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |
|
| CX01 | Expiry of patent term |