CN201236950Y - Bidirectional hard sealed spherical butterfly valve - Google Patents
Bidirectional hard sealed spherical butterfly valve Download PDFInfo
- Publication number
- CN201236950Y CN201236950Y CNU2008200537793U CN200820053779U CN201236950Y CN 201236950 Y CN201236950 Y CN 201236950Y CN U2008200537793 U CNU2008200537793 U CN U2008200537793U CN 200820053779 U CN200820053779 U CN 200820053779U CN 201236950 Y CN201236950 Y CN 201236950Y
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- valve
- valve seat
- sealing
- thin wall
- wall circular
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Abstract
The utility model discloses a bidirectional hard sealing spherical butterfly valve. A valve plate (6) and a valve rod (7) respectively adopt double eccentric structures, and installed on a valve body (1), a sealing ring (4) with a circular thin film structure is arranged on the valve plate (6), the sealing surface of the sealing ring (4) is a spherical structure, a valve seat is a valve seat (3) with a circular thin film structure and is inlaid in a groove (12) of the valve body (1), dovetail grooves (9), in which sealing rings are embedded, are formed on the two side surfaces of the valve seat (3) with the circular thin film structure, the sealing surface of the valve seat (3) with the circular thin film structure is a circular cambered surface structure, and forms a circular line contact sealing pair with the sealing ring (4) with the circular thin film structure, the width of the valve seat (3) with the circular thin film structure is smaller than that of the groove (12), a booster cavity (10) is formed between the valve seat (3) with the circular thin film structure and the valve body (1), and a boosting hole (11) for communicating with the booster cavity (10) and the outlet end of the valve is arranged on the valve body (1). The utility model can realize two-way seal and has good sealing effect.
Description
Technical field
The utility model relates to a kind of butterfly valve, particularly relates to a kind of two-way hard seal spherical butterfly valve.
Technical background
Existing two-way hard seal butterfly valve sealing pair adopts the conical surface structure, and during the forward pressurized, its seal pressure is sealing pair preload pressure and pressure medium sum, and therefore, pressure medium is high more, and seal pressure is big more, and sealing effect is good more; Oppositely during pressurized, its seal pressure is the poor of sealing pair preload pressure and pressure medium, and therefore, pressure medium is high more, and seal pressure is more little; Owing to during component pressurizeds such as valve plate, valve rod, can produce certain deformation, the actual seal pressure of sealing pair is significantly reduced, when actual seal pressure less than valve must seal pressure the time, sealing pair begins to leak.Therefore, when valve aperture is bigger, pressure medium is when higher, because the restriction of structure, material and Flow area, actual seal pressure is difficult to reach must seal pressure, causes dielectric leakage, can not realize two way sealed.
The model utility content
Technical problem to be solved in the utility model provides a kind of two-way hard seal spherical butterfly valve that can realize two way sealed and good sealing effect.
In order to solve the problems of the technologies described above, the two-way hard seal spherical butterfly valve that the utility model provides, comprise valve body, valve seat, valve plate and valve rod, the tie point of described valve plate and described valve rod adopts center of gravity that departs from described valve plate and the two eccentric structures that depart from the longitudinal center line of described valve body to be installed on the described valve body, on described valve plate, be provided with thin wall circular sealing structure ring, its sealing surface is a spheric structure, described valve seat is thin wall circular structure valve seat and is embedded in the groove of described valve body, the bi-side of described thin wall circular structure valve seat have the dovetail groove that is embedded with seal ring, the sealing surface of described thin wall circular structure valve seat is the arc surface structure, form circular line contact sealing pair with described thin wall circular sealing structure ring, the width of described thin wall circular structure valve seat is less than described recess width, be formed with booster cavity between described thin wall circular structure valve seat and the described valve body, on described valve body, be provided with the pressurized hole of the outlet end that is communicated with described booster cavity and valve.
Described seal ring is the O RunddichtringO.
Adopt the two-way hard seal spherical butterfly valve of technique scheme, when valve forward pressurized, the sealing pair specific pressure is preload pressure and pressure medium sum, and therefore, pressure medium is high more, and seal pressure is big more, and sealing effect is good more; When reverse pressurized, pressure medium enters booster cavity by pressurized hole, promotes valve seat towards left slippage, and compensation is because the amount of deformation behind the pressurizeds such as valve plate, valve rod fits tightly valve seat and seal ring all the time; Pressure medium is big more, and seal pressure is big more, and sealing effect is good more.Therefore, can realize two way sealed, and irrelevant with the valve aperture size, pressure medium is high more, and sealing effect is good more.
Main feature of the present utility model: 1, two way sealed: the slip valve seat construction designs, and compensates the compressive deformation of component such as valve plate, valve rod automatically; Be not subjected to the restriction of valve aperture size and pressure medium height, the complete series product is realized two way sealed; 2, good seal: seal ring and valve seat are thin walled elastic structure, can eliminate processing and assembly error between the sealing pair by resiliently deformable; Simultaneously, because the design of the spheric structure of seal ring can be sought the valve seat center automatically, sealing pair coincide good.This valve has the function of blocking medium and regulating flow, can be widely used in various fluid pipe networks.
In sum, the utility model is a kind of two-way hard seal spherical butterfly valve that can realize two way sealed and good sealing effect.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is an I place enlarged view among Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 and Fig. 2, valve plate 6 adopts pin to be connected with key with valve rod 7, its tie point adopts two eccentric structures of center of gravity that departs from valve plate 6 and the longitudinal center line that departs from valve body 1 to pass through the Bearing Installation of valve rod 7 two ends setting on valve body 1, on valve plate 6 by the screw 5 fastening thin wall circular sealing structure rings 4 that are provided with; the sealing surface of thin wall circular sealing structure ring 4 is a spheric structure; be inlaid with thin wall circular structure valve seat 3 in the groove 12 of valve body 1; bi-side of thin wall circular structure valve seat 3 have the dovetail groove 9 that is embedded with O RunddichtringO 2; width of thin wall circular structure valve seat 3 is less than groove 12 width of valve body 1; micro-slipping space 8 is arranged within it; the sealing surface of thin wall circular structure valve seat 3 is the arc surface structure, forms circular line contact sealing pair with thin wall circular sealing structure ring 4; Be formed with booster cavity 10 between thin wall circular structure valve seat 3 and the valve body 1, on valve body 1, be provided with the pressurized hole 11 of the outlet end that is communicated with booster cavity 10 and valve.
Referring to Fig. 1 and Fig. 2, valve plate 6 adopts two eccentric structures, can drive valve plate 6 by rotation valve rod 7 and open and close; During switching, can contact fast with thin wall circular structure valve seat 3 or separate, can reduce to open and close moment, the stroke of reducing friction reduces the wearing and tearing of sealing pair; Thin wall circular sealing structure ring 4 tightens together with valve plate 6, and thin wall circular sealing structure ring 4 is the thin wall circular structure, has better elastic and higher intensity; Its sealing surface is a spheric structure, can realize the sealing pair self-alignment and can eliminate the processing and assembling error to a certain extent, and it is good that sealing pair is coincide; Thin wall circular structure valve seat 3 is the thin wall circular structure, and its sealing surface is the arc surface structure, forms circular line contact sealing pair with thin wall circular sealing structure ring 4, realizes good sealing effect; When valve forward pressurized, the sealing pair specific pressure is preload pressure and pressure medium sum, and therefore, pressure medium is high more, and seal pressure is big more, and sealing effect is good more; When reverse pressurized, pressure medium enters booster cavity 10 by pressurized hole 11, promote thin wall circular structure valve seat 3 towards left slippage, compensation is because the amount of deformation behind the pressurizeds such as valve plate 6, valve rod 7 fits tightly thin wall circular structure valve seat 3 and thin wall circular sealing structure ring 4 all the time; Pressure medium is big more, and seal pressure is big more, and sealing effect is good more.Therefore, can realize two way sealed, and irrelevant with the valve aperture size, pressure medium is high more, and sealing effect is good more.
Claims (2)
1, a kind of two-way hard seal spherical butterfly valve, comprise valve body (1), valve seat, valve plate (6) and valve rod (7), it is characterized in that: described valve plate (6) adopts center of gravity that departs from described valve plate (6) and the two eccentric structures that depart from the longitudinal center line of described valve body (1) to be installed on the described valve body (1) with the tie point of described valve rod (7), on described valve plate (6), be provided with thin wall circular sealing structure ring (4), its sealing surface is a spheric structure, described valve seat is in thin wall circular structure valve seat (3) and the groove (12) that is embedded in described valve body (1), the bi-side of described thin wall circular structure valve seat (3) have the dovetail groove (9) that is embedded with seal ring, the sealing surface of described thin wall circular structure valve seat (3) is the arc surface structure, form circular line contact sealing pair with described thin wall circular sealing structure ring (4), the width of described thin wall circular structure valve seat (3) is less than described groove (12) width, be formed with booster cavity (10) between described thin wall circular structure valve seat (3) and the described valve body (1), on described valve body (1), be provided with the pressurized hole (11) of the outlet end that is communicated with described booster cavity (10) and valve.
2, two-way hard seal spherical butterfly valve according to claim 1 is characterized in that: described seal ring is O RunddichtringO (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200537793U CN201236950Y (en) | 2008-07-18 | 2008-07-18 | Bidirectional hard sealed spherical butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200537793U CN201236950Y (en) | 2008-07-18 | 2008-07-18 | Bidirectional hard sealed spherical butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201236950Y true CN201236950Y (en) | 2009-05-13 |
Family
ID=40649681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200537793U Expired - Fee Related CN201236950Y (en) | 2008-07-18 | 2008-07-18 | Bidirectional hard sealed spherical butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201236950Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793221A (en) * | 2010-03-30 | 2010-08-04 | 铁岭博旺阀门有限公司 | Water turbine inlet butterfly valve with thin-shell metal sealing ring |
| CN101886703A (en) * | 2010-08-18 | 2010-11-17 | 上海开维喜阀门集团有限公司 | Combined circular groove for butterfly valve seat of molecular sieve |
| CN103016839A (en) * | 2012-12-08 | 2013-04-03 | 中国航天科技集团公司第六研究院第十一研究所 | Elastic thin-wall valve seat for big-flow high-pressure valve |
-
2008
- 2008-07-18 CN CNU2008200537793U patent/CN201236950Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793221A (en) * | 2010-03-30 | 2010-08-04 | 铁岭博旺阀门有限公司 | Water turbine inlet butterfly valve with thin-shell metal sealing ring |
| CN101886703A (en) * | 2010-08-18 | 2010-11-17 | 上海开维喜阀门集团有限公司 | Combined circular groove for butterfly valve seat of molecular sieve |
| CN101886703B (en) * | 2010-08-18 | 2012-08-29 | 上海开维喜阀门集团有限公司 | Combined circular groove for butterfly valve seat of molecular sieve |
| CN103016839A (en) * | 2012-12-08 | 2013-04-03 | 中国航天科技集团公司第六研究院第十一研究所 | Elastic thin-wall valve seat for big-flow high-pressure valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20110718 |