CN204239773U - A kind of floating seal butterfly valve - Google Patents
A kind of floating seal butterfly valve Download PDFInfo
- Publication number
- CN204239773U CN204239773U CN201420697440.2U CN201420697440U CN204239773U CN 204239773 U CN204239773 U CN 204239773U CN 201420697440 U CN201420697440 U CN 201420697440U CN 204239773 U CN204239773 U CN 204239773U
- Authority
- CN
- China
- Prior art keywords
- flap
- valve rod
- floating seal
- valve
- gap slot
- 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
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a kind of floating seal butterfly valve, comprise valve body, flap and valve rod, axial one end of described flap is one-body molded connecting sleeve, described connecting sleeve coaxial package is on valve rod, on connecting sleeve, also radial direction is equipped with locating stud, on described valve rod corresponding offer for described locating stud radially across pin-and-hole, and be Spielpassung between described pin-and-hole and locating stud, the axial the other end end of described flap is provided with gap slot, the position of the corresponding described gap slot of described body cavity is provided with bulge loop, between described bulge loop and gap slot, floating seal is housed, described floating seal includes soft outer ring, rigid inner ring, spring and gland, adopt said structure, the utility model provides a kind of less by outside temperature difference influence, the better floating seal butterfly valve of sealability.
Description
Technical field
The utility model relates to a kind of butterfly valve.
Background technique
Butterfly valve is a kind of conventional valve, its structure mainly includes valve body, flap and valve rod, described valve rod is arranged on valve body, described flap is positioned at valve body and is installed on valve rod, but be all fixed by screw in the prior art between described flap and valve rod, owing to affecting by factors such as external environment condition temperature change, in valve using process, flap easily expands with heat and contract with cold change, and the screw connection of prior art causes flap correspondingly not change space, thus local is revealed easily to cause valve to occur.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of, sealability better floating seal butterfly valve less by outside temperature difference influence.
For achieving the above object, the utility model provides a kind of floating seal butterfly valve, comprise valve body, flap and valve rod, described valve rod is arranged on valve body, described flap is positioned at valve body and is installed on valve rod, axial one end of described flap is one-body molded connecting sleeve, described connecting sleeve coaxial package is on valve rod, on connecting sleeve, also radial direction is equipped with locating stud, on described valve rod corresponding offer for described locating stud radially across pin-and-hole, and be Spielpassung between described pin-and-hole and locating stud, the axial the other end end of described flap is provided with gap slot, the position of the corresponding described gap slot of described body cavity is provided with bulge loop, between described bulge loop and gap slot, floating seal is housed, described floating seal includes soft outer ring, rigid inner ring, spring and gland, the two ends of described spring abut with gap slot bottom surface and rigid inner ring respectively, it is outer and contact with the bulge loop of body cavity and seal that described soft outer ring is wrapped in rigid inner ring, described gland is installed on flap also corresponding to soft outer ring, rigid inner ring and pressure mounting of the spring are in flap gap slot.
The beneficial effects of the utility model are: adopt said structure, owing to being Spielpassung between the pin-and-hole on the locating stud and valve rod of radial stationary positioned flap and valve rod, therefore can relatively be fluctuated by valve rod when flap expands with heat and contract with cold change, simultaneously due between flap with valve body also for floating seal coordinates, therefore when the relative valve rod of flap fluctuates, can remain between flap and valve body and seal well, in sum, butterfly valve provided by the utility model affects less by outside difference variation, and sealability is better.
The outer surface that the utility model can be set to described rigid inner ring is further provided with the convex key of dovetail, and the internal surface correspondence of described soft outer ring is provided with the dovetail shaped groove with described dovetail convex key phase scarf.
Adopt said structure, soft outer ring can be made to wrap more securely on the outer surface of rigid inner ring.
What the utility model also can be set to described valve rod further is also provided with stuffing box packing between two ends and valve body up and down, and described stuffing box packing is fixed by Gland.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the I portion enlarged view of Fig. 1.
Embodiment
As Fig. 1, a kind of floating seal butterfly valve is given shown in 2, comprise valve body 1, flap 2 and valve rod 3, described valve rod 3 is arranged on valve body 1, described flap 2 is positioned at valve body 1 and is installed on valve rod 3, axial one end of described flap 2 is one-body molded connecting sleeve 21, described connecting sleeve 21 coaxial package is on valve rod 3, on connecting sleeve 21, also radial direction is equipped with locating stud 4, on described valve rod 3 corresponding offer for described locating stud 4 radially across pin-and-hole 31, and be Spielpassung between described pin-and-hole 31 and locating stud 4, the axial the other end end of described flap 2 is provided with gap slot 22, the position of the corresponding described gap slot 22 of described valve body 1 inner chamber is provided with bulge loop 11, between described bulge loop 11 and gap slot 22, floating seal 5 is housed, described floating seal 5 includes soft outer ring 51, rigid inner ring 52, spring 53 and gland 54, the two ends of described spring 53 abut with gap slot 22 bottom surface and rigid inner ring 52 respectively, it is outer and contact with the bulge loop 11 of valve body 1 inner chamber and seal that described soft outer ring 51 is wrapped in rigid inner ring 52, described gland 54 is installed on flap 2 also corresponding to soft outer ring 51, rigid inner ring 52 and spring 53 press-fit in flap gap slot 22.The outer surface of described rigid inner ring 52 is also provided with the convex key 521 of dovetail, and the internal surface correspondence of described soft outer ring 51 is provided with the dovetail shaped groove 511 with described dovetail convex key 521 phase scarf.Also be provided with stuffing box packing 6 between the two ends up and down of described valve rod 3 and valve body 1, described stuffing box packing 6 is fixed by Gland 7.
Adopt said structure, due to for being Spielpassung between the pin-and-hole 31 on the locating stud 4 of radial stationary positioned flap 2 and valve rod 3 and valve rod 3, therefore can relatively be fluctuated by valve rod 3 when flap 2 expands with heat and contract with cold change, simultaneously due between flap 2 with valve body 1 also for floating seal coordinates, therefore when valve rod 3 fluctuates flap 2 relatively, can remain between flap 2 and valve body 1 and seal well, in sum, butterfly valve provided by the utility model affects less by outside difference variation, and sealability is better.
Claims (3)
1. a floating seal butterfly valve, comprise valve body, flap and valve rod, described valve rod is arranged on valve body, described flap is positioned at valve body and is installed on valve rod, it is characterized in that: axial one end of described flap is one-body molded connecting sleeve, described connecting sleeve coaxial package is on valve rod, on connecting sleeve, also radial direction is equipped with locating stud, on described valve rod corresponding offer for described locating stud radially across pin-and-hole, and be Spielpassung between described pin-and-hole and locating stud, the axial the other end end of described flap is provided with gap slot, the position of the corresponding described gap slot of described body cavity is provided with bulge loop, between described bulge loop and gap slot, floating seal is housed, described floating seal includes soft outer ring, rigid inner ring, spring and gland, the two ends of described spring abut with gap slot bottom surface and rigid inner ring respectively, it is outer and contact with the bulge loop of body cavity and seal that described soft outer ring is wrapped in rigid inner ring, described gland is installed on flap also corresponding to soft outer ring, rigid inner ring and pressure mounting of the spring are in flap gap slot.
2. a kind of floating seal butterfly valve according to claim 1, is characterized in that: the outer surface of described rigid inner ring is provided with the convex key of dovetail, and the internal surface correspondence of described soft outer ring is provided with the dovetail shaped groove with described dovetail convex key phase scarf.
3. a kind of floating seal butterfly valve according to claim 1, is characterized in that: described valve rod be also provided with stuffing box packing between two ends and valve body up and down, described stuffing box packing is fixed by Gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420697440.2U CN204239773U (en) | 2014-11-20 | 2014-11-20 | A kind of floating seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420697440.2U CN204239773U (en) | 2014-11-20 | 2014-11-20 | A kind of floating seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204239773U true CN204239773U (en) | 2015-04-01 |
Family
ID=52769272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420697440.2U Expired - Fee Related CN204239773U (en) | 2014-11-20 | 2014-11-20 | A kind of floating seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204239773U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090256A (en) * | 2016-08-17 | 2016-11-09 | 上海开纯洁净室技术工程有限公司 | Floating type pressure reduction confined gas valve |
| CN109723835A (en) * | 2018-12-25 | 2019-05-07 | 兰控阀门执行器江苏有限公司 | A kind of valve actuator that anti-leak result is excellent |
-
2014
- 2014-11-20 CN CN201420697440.2U patent/CN204239773U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090256A (en) * | 2016-08-17 | 2016-11-09 | 上海开纯洁净室技术工程有限公司 | Floating type pressure reduction confined gas valve |
| CN109723835A (en) * | 2018-12-25 | 2019-05-07 | 兰控阀门执行器江苏有限公司 | A kind of valve actuator that anti-leak result is excellent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204239773U (en) | A kind of floating seal butterfly valve | |
| CN204879013U (en) | Low temperature pneumatic ball valve packing structure | |
| CN203717970U (en) | Valve sealing compensation structure | |
| CN204004573U (en) | Fixed high-temperature hard sealing tee ball valve | |
| CN103994295A (en) | High pressure and high temperature resistant rotating compensator | |
| CN205261000U (en) | Dual stem seal structure of valve | |
| CN203214400U (en) | Split ring type sealing device | |
| CN204243702U (en) | A kind of sealing ring of protecting pipe | |
| CN208871071U (en) | Main inlet throttle-stop valve stem structure | |
| CN108204252B (en) | Cylinder for steam turbine | |
| CN204300500U (en) | A kind of thermosensitive filler sealed valve | |
| CN201368132Y (en) | Sealing end cover | |
| CN204345061U (en) | A kind of valve of valve with changeable valve seat | |
| CN105299238A (en) | Sleeve type regulating valve combination valve plug | |
| CN203549095U (en) | Stop valve | |
| CN204042003U (en) | A kind of mechanical sealing mechanism | |
| CN203847884U (en) | High-pressure-resistant and high-temperature-resistant rotation compensator | |
| CN204126722U (en) | The seal arrangement of ring Cylinder engine | |
| CN205780996U (en) | A kind of metal seal ball valve | |
| CN203285999U (en) | Seal ring for plunger type oil gas cylinder | |
| CN204004412U (en) | A kind of radially dynamic adjustable contact type sealing device for axle head | |
| CN203570450U (en) | High-airtightness labyrinth piston | |
| CN203336025U (en) | Self-locking quick connector device | |
| CN204755615U (en) | Sparkproof end cover for bearing | |
| CN201764154U (en) | Pipe fitting joint with insert |
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: 20150401 Termination date: 20161120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |