CN202165623U - Butterfly valve - Google Patents
Butterfly valve Download PDFInfo
- Publication number
- CN202165623U CN202165623U CN2011202622171U CN201120262217U CN202165623U CN 202165623 U CN202165623 U CN 202165623U CN 2011202622171 U CN2011202622171 U CN 2011202622171U CN 201120262217 U CN201120262217 U CN 201120262217U CN 202165623 U CN202165623 U CN 202165623U
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- CN
- China
- Prior art keywords
- valve
- butterfly
- valve rod
- valve body
- rod
- 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
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Abstract
The utility model discloses a butterfly valve which comprises a valve body, a valve holder, a valve rod mounted on the valve body and a butterfly plate fixed in a valve cavity of the valve body by the valve rod and capable of rotating along the valve rod. An annular groove twisting and vertical to the axes of the valve rod is arranged on the radical side wall at the bottom end of the valve rod; moreover, the radical side wall is also provided with an annular stop with an outer diameter larger than the outer diameter of the valve rod after the annular stop is clamped into the annular groove; and the valve body is provided with a step structure matched with the annular stop dog in a blocking way. The valve rod and the butterfly plate of the butterfly valve are hard to deflect to one side, so that the butterfly plate and the valve body are better sealed.
Description
Technical field
The utility model relates to a kind of valve, a kind of specifically butterfly valve.
Background technique
The butterfly valve open-shut device is a discoidal butterfly plate, and the axis around himself in valve body rotates, thereby reaches the purpose that opens and closes or regulate, and butterfly valve is the comparatively simple modulating valve of a kind of structure, can be used for the switch control of pipeline medium.Characteristics such as butterfly valve has compact structure, heavy caliber, keying is quick, operation is light, reliable performance.Present butterfly valve comprises valve body, is installed in the valve rod on the valve body, butterfly plate; Valve rod comprises upper valve rod and lower valve rod again, and fluid gets into the end face of lower valve rod easily from the slit, and transmits pressure; Make its secundly; The dish plate that causes linking to each other with valve rod is secundly also, makes poorly sealed closely, influences the performance of butterfly valve.Existing reed valve in addition, the sealing surface between valve body and the dish plate is a plane contact, when butterfly plate or valve seat, during compressive deformation, its surface of contact area will diminish even become from the face contact and be a contact, causes influencing the sealability of butterfly valve.
The model utility content
The problem that the utility model will solve is to improve the dish plate of existing butterfly valve easily along valve rod direction secundly, poorly sealed close problem between dish plate and the valve body.
In order to overcome the above problems, the utility model provides a kind of butterfly valve, comprises valve body; Valve seat; Be installed in the valve rod on the valve body, be fixed in the valve pocket of valve body the butterfly plate that can rotate around valve rod by valve rod, the radial sidewalls of said valve rod bottom be provided with around and the annular groove in vertical its axle center; Also be provided with and snap in that external diameter is greater than the collar stop of lower valve rod external diameter behind the annular groove, said valve body is provided with the ledge structure that cooperates as block card with collar stop.
Said collar stop is not complete annular.
Described collar stop is located between two rolling bearings.
The face that described butterfly plate contacts with valve seat is a sphere, and the face that described valve seat cooperates with butterfly plate is for can fit tightly in the concave panel of dish cricket face.
Valve seat is a Hardmetal materials, and the sealing surface of butterfly plate is a Hardmetal materials.
A kind of butterfly valve of the utility model, valve rod are done block card through collar stop and valve body and are cooperated, and valve rod and dish plate can secundlies, and ball face sealing between dish plate and the valve seat makes that further dish plate and valve base sealing are good in addition.
Description of drawings
Accompanying drawing 1 is the generalized section of the utility model
Accompanying drawing 2 is local enlarged diagrams of Fig. 1
Accompanying drawing 3 is collar stop distortion schematic representation of the utility model
Accompanying drawing 4 is another distortion schematic representation of collar stop of the utility model
Accompanying drawing 5 is another local enlarged diagrams of Fig. 1
1 is rolling bearing; 2 is collar stop; 3 is valve body; 4 is valve seat; 5 is the dish plate; 6 is valve rod; 7 is dish cricket face; 8 is the valve seat sphere; 9 is annular groove.
Embodiment
Below in conjunction with accompanying drawing a kind of butterfly valve of the utility model is described further.
Like Fig. 1, shown in 2, a kind of butterfly valve of present embodiment comprises valve body 3; Valve seat 4; Be installed in the valve rod 6 on the valve body 3, be fixed in the valve pocket of valve body 3 butterfly plate 5 that can rotate around valve rod by valve rod 6, the radial sidewalls of said valve rod 3 bottoms be provided with around and the annular groove 9 in vertical its axle center; Also be provided with and snap in the collar stop 2 of annular groove 9 back external diameters greater than lower valve rod 6 external diameters, said valve body 3 is provided with the ledge structure that cooperates as block card with collar stop 2.Collar stop 2 is contained on the valve rod 6; Restriction butterfly plate 5 moves along what valve rod 6 directions made progress when opening, and make bottom end that fluid enters into valve rod 6 can not make its skew to the pressure of its generation, thereby dish plate 5 is more stable; Be not easy skew, sealing is more stable between dish plate 5 and the valve body 3.In the present embodiment, described collar stop 2 is located between two rolling bearings 1, because collar stop 2 all has rolling bearing 1 up and down, so lighter, more flexible when valve rod 3 rotates.
Like Fig. 3, shown in 4, said annular groove 9 or collar stop 2 are not complete annulars.Both can be the annular with breach as shown in Figure 3, also can be annular of splitting divided into two parts as shown in Figure 4.Collar stop 2 is complete when annular, also should be provided with the finedraw opening, it can be broken into two with one's hands snap in annular groove 9, and collar stop 2 is not complete annular, can snap in annular groove 9 to collar stop 2 more easily.
As shown in Figure 5, the face that butterfly plate 5 contacts with valve seat 4 is a sphere.The face that described valve seat 4 cooperates with butterfly plate 5 is for can fit tightly in the concave panel of dish plate 5 spheres.Butterfly plate 5 sealing surfaces are spheric structure, and valve seat 4 sealing surfaces are the arc surface loop configuration, and when butterfly plate 5 contacted pressurized with valve seat 4, its sphere was sought the center of arc surface automatically, keep sealing surface each point seal pressure even, good seal.In the present embodiment, valve seat 4 adopts three off-centre to be installed on the valve body 3 sphere 8 pile-up welding hard alloys of valve seat 4 with valve rod 6; The sphere 7 of butterfly plate 5 sealing surfaces is a pile-up welding hard alloy; The valve plate seal ring is the dish-like structure of thin-walled sphere, has better elastic and higher intensity, during pressurized through self distortion; Automatically offset zero component processing assembly error and sealing surface wear remain good seal.
The utility model be not limited to above embodiment.
Claims (5)
1. butterfly valve; Comprise valve body (3); Valve seat (4); Be installed in the valve rod (6) on the valve body (3), be fixed in the valve pocket of valve body (3) butterfly plate (5) that can rotate around valve rod (6) by valve rod (6), it is characterized in that: the radial sidewalls of said valve rod (6) bottom be provided with around and the annular groove (9) in vertical its axle center; Also be provided with and snap in the collar stop (2) of annular groove (9) back external diameter greater than the lower valve rod external diameter, said valve body (3) is provided with the ledge structure that cooperates as block card with collar stop (2).
2. a kind of butterfly valve according to claim 1 is characterized in that: said collar stop (2) is not complete annular.
3. a kind of butterfly valve according to claim 1 is characterized in that: described collar stop (2) is located between two rolling bearings (1).
4. according to claim 1 or 2 or 3 described a kind of butterfly valves, it is characterized in that: the face that described butterfly plate (5) cooperates with valve seat (4) is a sphere, and the face that valve seat (4) cooperates with butterfly plate (5) is for can fit tightly in the spill sphere of dish plate (5) sphere.
5. a kind of butterfly valve according to claim 4 is characterized in that: the spill sphere of said valve seat (4) is a Hardmetal materials, and the sphere of said butterfly plate (5) is a Hardmetal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202622171U CN202165623U (en) | 2011-07-23 | 2011-07-23 | Butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202622171U CN202165623U (en) | 2011-07-23 | 2011-07-23 | Butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202165623U true CN202165623U (en) | 2012-03-14 |
Family
ID=45801448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202622171U Expired - Fee Related CN202165623U (en) | 2011-07-23 | 2011-07-23 | Butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202165623U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291939A (en) * | 2013-06-21 | 2013-09-11 | 天津富赛克流体控制设备有限公司 | High-pressure ultra-low-temperature type all-metal hard sealing butterfly valve |
| CN104676019A (en) * | 2015-03-04 | 2015-06-03 | 江苏神通阀门股份有限公司 | Axial limiting structure of butterfly valve |
| CN111692349A (en) * | 2020-06-15 | 2020-09-22 | 四川弗洛威流体控制设备有限公司 | Butterfly spherical valve |
-
2011
- 2011-07-23 CN CN2011202622171U patent/CN202165623U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291939A (en) * | 2013-06-21 | 2013-09-11 | 天津富赛克流体控制设备有限公司 | High-pressure ultra-low-temperature type all-metal hard sealing butterfly valve |
| CN104676019A (en) * | 2015-03-04 | 2015-06-03 | 江苏神通阀门股份有限公司 | Axial limiting structure of butterfly valve |
| CN111692349A (en) * | 2020-06-15 | 2020-09-22 | 四川弗洛威流体控制设备有限公司 | Butterfly spherical 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 |
Granted publication date: 20120314 Termination date: 20160723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |