CN202441902U - Novel pneumatic butterfly valve - Google Patents
Novel pneumatic butterfly valve Download PDFInfo
- Publication number
- CN202441902U CN202441902U CN2012200830102U CN201220083010U CN202441902U CN 202441902 U CN202441902 U CN 202441902U CN 2012200830102 U CN2012200830102 U CN 2012200830102U CN 201220083010 U CN201220083010 U CN 201220083010U CN 202441902 U CN202441902 U CN 202441902U
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- CN
- China
- Prior art keywords
- valve
- valve rod
- shifting axle
- pneumatic butterfly
- plate
- 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 provides a novel pneumatic butterfly valve which comprises a butterfly plate, a corrugated pipe, a valve body, a bush, a valve plate, an upper valve rod, a valve shaft, a valve deck, a lower valve rod and an upper valve rod driving device; the pneumatic butterfly valve also comprises a seal combination consisting of an O-shaped rubber seal ring; a movable shaft is arranged between the upper valve rod and the lower valve rod, the movable shaft is axially arranged and is movably and radially positioned in the valve deck, one end of the upper valve rod is in radial drive fit with the upper valve rod driving device, the other end of the upper valve rod extends to the inside of an upper center hole, one end of the lower valve rod extends to the inside of the center hole, the other end of the lower valve rod and the butterfly plate coaxially rotate, and the ends, extending to the inside of the center hole, of the upper and lower valve rods are respectively provided with an upper pull pin and a lower pull pin which are radially protruded; the O-shaped rubber seal ring is arranged between two shaft sleeves and two valve bodies, and the O-shaped rubber seal ring and the valve shaft form a double seal effect on a medium; and the corrugated pipe is sleeved on the movable shaft, and the movable end of the corrugated pipe and the movable shaft are connected into a whole. According to the utility model, through realizing the opening and closing of the valve and arranging a moving mechanism, when the movable shaft moves, no relative motion is performed between the corrugated pipe and the movable shaft, therefore, an effect of no friction loss is achieved, the non-leakage of the delivered mediums is ensured, the tightness of the butterfly valve is improved, and the application range of the butterfly valve is expanded.
Description
Technical field
This is novel to relate generally to a kind of valve, relates in particular to a kind of Pneumatic butterfly valve.
Background technique
Butterfly valve obtains using very widely in fields such as chemical industry, oil, gas control as a kind of product that is used as pipe-line system and flow control; Existing reed valve is because the Sealing at stuffing box place all belongs to the soft seal filler, because the friction and the pressure that constantly rotatablely moved by valve rod, in use, soft sealed packing is deformation wear and leakage-gap takes place and cause the medium seepage gradually; The existing butterfly valve that adopts soft sealed packing to cooperate with valve stem seal mostly can't guarantee the zero leakage of medium, has limited its using scope greatly; Some butterfly valve is inhomogeneous because of the design amount of being full of aspect the cooperation of valve body valve plate sealing in addition, causes valve plate rubber and valve body sealing surface friction in the valve opening and closing process, and generation is aging and damaged, and open and close torque is big, and is also little desirable to the sealing and the withstand voltage aspect of medium.
Summary of the invention
This novel purpose be to provide a kind of fed sheet of a media zero leakage, starting torque little, to the novel pneumatic butterfly valve of the sealability and the good pressure-resistant performance of medium.
The technological scheme that the utility model solve the technical problem is:
A kind of novel pneumatic butterfly valve, it comprises dish plate, bellows, valve body, lining, valve plate, upper valve rod, valve shaft, valve gap, lower valve rod, upper valve rod drive unit; Said Pneumatic butterfly valve also is provided with " O " type rubber seal and forms seal combination; Be provided with a shifting axle between said upper valve rod and the lower valve rod; This shifting axle axially is provided with the activity radial location and is located in the valve gap; Upper valve rod one end and upper valve rod drive unit radially transmission cooperate, and the other end stretches in the center hole, and an end of lower valve rod stretches into center hole; The end that the other end and dish plate coaxial rotation, upper valve rod and lower valve rod stretch into center hole is respectively equipped with the radially last finger and following finger of protrusion; Said " O " type rubber seal is installed between two axle sleeves or the valve body, forms two resealings to medium with valve shaft; Said bellows is set on the shifting axle, and the movable end and the shifting axle of bellows are connected as a single entity.
Said valve plate and valve body surface are spherical sealing surface, and valve body sealing surface and sealing surface of valve plate become same axle center spheroid.
Said shifting axle is provided with groove, and valve gap is provided with fastening screw, and the shifting axle radial location is provided with to cooperate through fastening screw and inserts in the groove.
Described bellows movable end is welded on the sidewall of shifting axle, and the bellows welding ends is connected to flange plate.
The usefulness of technique scheme is:
1, this novel switching through the realization valve, and mobile mechanism is set, make bellows when shifting axle is movable; Bellows and shifting axle do not have relative movement, can realize not taking place frictional loss, guarantee not leaking of fed sheet of a media; Improve its sealing, enlarge the application area of butterfly valve simultaneously.
2, be under the sphere interference fit at valve plate rubber seal face and valve body sealing surface, product any angle in opening-closing process is formed and extraneous sealing medium, form each position interference uniformity of sealing.
3, this novel sealing and withstand voltage properties that has improved product has reduced the open and close torque of product.
Below in conjunction with accompanying drawing and specific embodiment to this novel being further described.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is this novel ball face sealing structure schematic representation.
Embodiment
Embodiment
A kind of novel pneumatic butterfly valve as shown in Figure 1, it comprises dish plate 1, bellows 2, valve body 3, lining 4, valve plate 5, upper valve rod 6, valve shaft 7, valve gap 8, lower valve rod 9, upper valve rod drive unit 10; Valve plate 5 is installed in the valve body 3 and is detachable mechanical connection with valve shaft 7, and axle sleeve is arranged in the valve body axis hole, is interference fit with the valve body axis hole." O " shape rubber seal 11 is installed between two axle sleeves or the valve body 3, said " O " shape rubber seal 11 and second resealing of valve shaft 7 formation to medium, valve body 3 tops connect transmission device, and " O " shape rubber seal 11 is formed seal combination; Valve plate 5 surfaces are vulcanized rubber in addition, and sealing surface is a spheroid, and valve body 3 sealing surfaces also are spherical sealing surface, and assembling rear valve body 3 sealing surfaces and valve plate 5 sealing surfaces become same axle center spheroid, and the interference formation valve through two spheroids is to the sealing of medium.This fit form all forms and extraneous sealing product any angle in opening-closing process to medium.
Upper valve rod drive unit 10 in the present embodiment adopts pneumatic actuating device; Be provided with a shifting axle 12 between upper valve rod 6 and the lower valve rod 9; This shifting axle 12 is located in the valve gap 8, and the sidewall of shifting axle 12 is provided with a groove 13 vertically, and valve gap 8 is provided with a location latch 14; This fastening screw 14 inserts in grooves 13, makes shifting axle 12 axially activity and radial location in valve gap 8.One end of upper valve rod 6 and upper valve rod drive unit 10 radially transmission cooperate, and the other end stretches in the center hole, and an end of lower valve rod 9 stretches into down center hole, the other end and dish plate 1 coaxial rotation.Upper valve rod 6, lower valve rod 9 and shifting axle 12 threes are coaxially set.During switching, upper valve rod drive unit 10 drives upper valve rod 6 and rotates.
The movable end of this novel corrugated pipe 2 is welded on the sidewall of shifting axle 12, and bellows 2 opening ends are welded with flange plate 15, and this flange plate 15 is folded between bonnet flange dish and the valve flange dish and uses bolt.Bellows 2 is set on the shifting axle 12, and the movable end of bellows 2 and shifting axle 12 are connected as a single entity, and the opening end of bellows 2 is connected the joint of valve gap 8 and valve body hermetically.
Claims (4)
1. novel pneumatic butterfly valve, it is characterized in that: it comprises dish plate, bellows, valve body, lining, valve plate, upper valve rod, valve shaft, valve gap, lower valve rod, upper valve rod drive unit; Said Pneumatic butterfly valve also is provided with " O " type rubber seal and forms seal combination; Be provided with a shifting axle between said upper valve rod and the lower valve rod; This shifting axle axially is provided with the activity radial location and is located in the valve gap; Upper valve rod one end and upper valve rod drive unit radially transmission cooperate, and the other end stretches in the center hole, and an end of lower valve rod stretches into center hole; The end that the other end and dish plate coaxial rotation, upper valve rod and lower valve rod stretch into center hole is respectively equipped with the radially last finger and following finger of protrusion; Said " O " type rubber seal is installed between two axle sleeves or the valve body, forms two resealings to medium with valve shaft; Said bellows is set on the shifting axle, and the movable end and the shifting axle of bellows are connected as a single entity.
2. according to the described a kind of novel pneumatic butterfly valve of claim 1, it is characterized in that: said valve plate and valve body surface are spherical sealing surface, and valve body sealing surface and sealing surface of valve plate become same axle center spheroid.
3. according to the described a kind of novel pneumatic butterfly valve of claim 1, it is characterized in that: said shifting axle is provided with groove, and valve gap is provided with fastening screw, and the shifting axle radial location is provided with to cooperate through fastening screw and inserts in the groove.
4. novel pneumatic butterfly valve according to claim 1 is characterized in that: said bellows movable end is welded on the sidewall of shifting axle, and the bellows welding ends is connected to flange plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200830102U CN202441902U (en) | 2012-03-07 | 2012-03-07 | Novel pneumatic butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200830102U CN202441902U (en) | 2012-03-07 | 2012-03-07 | Novel pneumatic butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441902U true CN202441902U (en) | 2012-09-19 |
Family
ID=46823353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200830102U Expired - Fee Related CN202441902U (en) | 2012-03-07 | 2012-03-07 | Novel pneumatic butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441902U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020082999A1 (en) * | 2018-10-23 | 2020-04-30 | 浙江迦南科技股份有限公司 | Hopper butterfly valve switching-on structure |
-
2012
- 2012-03-07 CN CN2012200830102U patent/CN202441902U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020082999A1 (en) * | 2018-10-23 | 2020-04-30 | 浙江迦南科技股份有限公司 | Hopper butterfly valve switching-on structure |
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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: 20120919 Termination date: 20150307 |
|
| EXPY | Termination of patent right or utility model |