CN203500504U - Butterfly valve with valve rod sealing structure - Google Patents
Butterfly valve with valve rod sealing structure Download PDFInfo
- Publication number
- CN203500504U CN203500504U CN201320515906.8U CN201320515906U CN203500504U CN 203500504 U CN203500504 U CN 203500504U CN 201320515906 U CN201320515906 U CN 201320515906U CN 203500504 U CN203500504 U CN 203500504U
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- CN
- China
- Prior art keywords
- valve
- valve rod
- valve seat
- shaped
- radially
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- 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 relates to a butterfly valve with a valve rod sealing structure. A valve seat is of a cylindrical structure integrally made of rubber, a valve rod mounting hole is radially and coaxially formed in the middle portion of the valve seat, and a valve rod radially penetrates through the valve rod mounting hole; ends of the valve rod mounting hole in the inner wall of the valve seat are coaxially provided with a valve rod sealing ring respectively, each valve rod sealing ring is provided with a concave spherical cambered surface, and the spherical cambered surface is matched with the edge shape of a dish plate and is in sliding fit with the dish plate in a sealing manner; the outer wall of the middle portion of the valve seat is radially provided with a strengthening convex ring, and the strengthening convex ring is embedded in a limiting ring groove formed in a valve body correspondingly. An arc-shaped sealing structure is arranged at the connecting position of the valve seat of the butterfly valve and the valve rod, and the sealing structure is made of an elastic rubber material and integrated with the valve seat, so that the sealing property of the dish plate and the valve seat is effectively ensured; the dish plate is embedded in a groove of the arc-shaped sealing structure at a closed position, so that the sealing property of the valve is effectively ensured.
Description
Technical field
The utility model belongs to valve field, especially a kind of butterfly valve that is shaped with valve rod leak-proof structure.
Background technique
Use at engineering pipeline transportation art valve is very extensive, the basic structure of valve is co-axial seal setting-in valve seat in valve body now, valve rod is radially installed on valve body, on valve rod in valve body, be fixedly mounted with dish plate, dish plate coordinates with valve base sealing, thereby dish plate rotation or movement under the driving of valve rod open and close the runner in valve seat; Valve body outer radial is shaped with a plurality of flange plates for being connected with pipeline, is shaped with bolt mounting holes on flange plate.But the sealability of rubber valve seat and dish plate is the joint that is difficult to ensure card, especially valve rod and valve seat of the important indicator sealing of valve, the more difficult control of sealability, and after long-term use, valve seat rubber deformation, easily causes sealing problem, causes valve to shorten working life.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of butterfly valve that is shaped with valve rod leak-proof structure of reasonable in design, simple in structure, easy to operate, long service life is provided.
The utility model solves its technical problem and takes following technological scheme to realize:
A kind of butterfly valve that is shaped with valve rod leak-proof structure, comprise valve body, valve rod, valve seat, dish plate, Joystick and bolt, valve body middle part is radially provided with a valve rod, this valve rod upper end is stretched out valve body and is coaxially installed with Joystick, in valve body, axial seal is provided with a valve seat, dish plate is radially installed on the valve rod in valve seat, this dish plate is fixedly mounted with by axial bolt and a valve rod, it is characterized in that: described valve seat is the one-body molded cylinder barrel shaped structure of making of rubber, this valve seat middle part is radially coaxially shaped with valve rod mounting hole, valve rod is radially through valve rod mounting hole, the valve rod mounting hole end of described valve base inner wall is all coaxially shaped with a valve stem packing ring, and this valve stem packing ring is shaped with the spherical arc of indent, this spherical arc laminating dish panel edges shape, and be slidably matched with the sealing of dish plate, described valve seat middle part outer wall is radially shaped with reinforcement bulge loop, and this reinforcement bulge loop is inlaid in the limited ring groove that in valve body, correspondence is made.
And the axial two ends outer rim of described valve seat is all shaped with bulge loop, this bulge loop is coaxially inlaid in the made valve seat mounting groove in the axial two ends of valve body.
And described bulge loop, valve stem packing ring, reinforcement bulge loop and valve seat all adopt elastic caoutchouc material one to make.
Advantage of the present utility model and good effect are:
1, the support performance of the rubber gasket of this butterfly valve is good, and firmly stable, simple and compact for structure, adjusting function is good, guarantees to support moment not yielding again.
The deformation effects such as 2, the machining accuracy of this butterfly valve is high, and valve seat is not yielding, and tolerance is little, the expansion upheaval of valve seat are little, the long service life of valve seat.
3, the valve seat of this butterfly valve and valve rod link position are shaped with arc sealing configuration, the employing of sealing structure has flexible quality of rubber materials and valve seat one is made, effectively guarantee the sealing of dish plate and valve seat, the operating position of dish plate is inlaid in the groove of arc sealing configuration, effectively guarantees the sealing of valve.
4, the utility model structural strength is high, and good seal performance is controlled flexibly, and this valve easily controls, and simple in structure, and the installation of valve part is simple, long service life.
Accompanying drawing explanation
Fig. 1 cuts open structural front view in of the present utility model;
Fig. 2 is Fig. 1 right elevation;
Fig. 3 is valve seat construction plan view in the utility model;
Fig. 4 be Fig. 3 in cut open sectional view.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of butterfly valve that is shaped with valve rod leak-proof structure, comprise valve body 3, valve rod 2, valve seat 4, dish plate 5, Joystick 1 and bolt 6, if accompanying drawing 1 is to as shown in accompanying drawing 2, valve body middle part is radially provided with a valve rod, this valve rod upper end is stretched out valve body and is coaxially installed with Joystick, in valve body, axial seal is provided with a valve seat, dish plate is radially installed on the valve rod in valve seat, this dish plate is fixedly mounted with by axial bolt and a valve rod, and the rotation under the twisting force of valve rod of dish plate, thereby the keying of control valve.
Innovative point of the present utility model is:
Valve seat concrete structure is shown in that accompanying drawing 3 is to accompanying drawing 4, and described valve seat is the one-body molded cylinder barrel shaped structure of making of rubber, and this valve seat middle part is radially coaxially shaped with valve rod mounting hole 9, and valve rod is radially through valve rod mounting hole; .
The valve rod mounting hole end of described valve base inner wall is all coaxially shaped with a valve stem packing ring 7, this valve stem packing ring is shaped with the spherical arc of indent, this spherical arc laminating dish panel edges shape, and be slidably matched with the sealing of dish plate, guarantee when valve rod rotates gap between elastic compensating valve seat and valve rod, guarantee valve seal, prevent that medium from entering valve seat and affecting valve precision.
In order to guarantee that the axial position of valve seat prevents that valve seat from moving, the axial two ends outer rim of described valve seat is all shaped with bulge loop 8, and this bulge loop is coaxially inlaid in the made valve seat mounting groove in the axial two ends of valve body.
In order to strengthen valve seat intensity, prevent valve seat distortion, described valve seat middle part outer wall is radially shaped with reinforcement bulge loop, this reinforcement bulge loop is inlaid in the limited ring groove that in valve body, correspondence is made, this valve seat construction is simple, effectively prevents that valve seat from moving axially, good stability, and middle part is shaped with that to strengthen the valve seat intensity of bulge loop large, avoid the distortion of valve seat protuberance.
Described bulge loop, valve stem packing ring, reinforcement bulge loop and valve seat all adopt elastic caoutchouc material one to make.
Although disclose for the purpose of illustration embodiment of the present utility model and accompanying drawing, but it will be appreciated by those skilled in the art that: within not departing from the spirit and scope of the utility model and claims, various replacements, variation and modification are all possible, therefore, scope of the present utility model is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (3)
1. a butterfly valve that is shaped with valve rod leak-proof structure, comprise valve body, valve rod, valve seat, dish plate, Joystick and bolt, valve body middle part is radially provided with a valve rod, this valve rod upper end is stretched out valve body and is coaxially installed with Joystick, in valve body, axial seal is provided with a valve seat, dish plate is radially installed on the valve rod in valve seat, this dish plate is fixedly mounted with by axial bolt and a valve rod, it is characterized in that: described valve seat is the one-body molded cylinder barrel shaped structure of making of rubber, this valve seat middle part is radially coaxially shaped with valve rod mounting hole, valve rod is radially through valve rod mounting hole,
The valve rod mounting hole end of described valve base inner wall is all coaxially shaped with a valve stem packing ring, and this valve stem packing ring is shaped with the spherical arc of indent, this spherical arc laminating dish panel edges shape, and be slidably matched with the sealing of dish plate;
Described valve seat middle part outer wall is radially shaped with reinforcement bulge loop, and this reinforcement bulge loop is inlaid in the limited ring groove that in valve body, correspondence is made.
2. the butterfly valve that is shaped with valve rod leak-proof structure according to claim 1, is characterized in that: the axial two ends outer rim of described valve seat is all shaped with bulge loop, and this bulge loop is coaxially inlaid in the made valve seat mounting groove in the axial two ends of valve body.
3. the butterfly valve that is shaped with valve rod leak-proof structure according to claim 1, is characterized in that: described bulge loop, valve stem packing ring, reinforcement bulge loop and valve seat all adopt elastic caoutchouc material one to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320515906.8U CN203500504U (en) | 2013-08-22 | 2013-08-22 | Butterfly valve with valve rod sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320515906.8U CN203500504U (en) | 2013-08-22 | 2013-08-22 | Butterfly valve with valve rod sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500504U true CN203500504U (en) | 2014-03-26 |
Family
ID=50331484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320515906.8U Expired - Fee Related CN203500504U (en) | 2013-08-22 | 2013-08-22 | Butterfly valve with valve rod sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500504U (en) |
-
2013
- 2013-08-22 CN CN201320515906.8U patent/CN203500504U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20150822 |
|
| EXPY | Termination of patent right or utility model |