CN201202819Y - Pneumatic corrugated pipe butterfly valve - Google Patents
Pneumatic corrugated pipe butterfly valve Download PDFInfo
- Publication number
- CN201202819Y CN201202819Y CNU2008201200429U CN200820120042U CN201202819Y CN 201202819 Y CN201202819 Y CN 201202819Y CN U2008201200429 U CNU2008201200429 U CN U2008201200429U CN 200820120042 U CN200820120042 U CN 200820120042U CN 201202819 Y CN201202819 Y CN 201202819Y
- Authority
- CN
- China
- Prior art keywords
- valve rod
- bellows
- valve
- shifting axle
- center hole
- 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
- 230000000694 effects Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000012856 packing Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000005489 elastic deformation Effects 0.000 abstract 1
- 239000002360 explosive Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Lift Valve (AREA)
- Fluid-Driven Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a pneumatic corrugated pipe butterfly valve which comprises a valve cover, a valve body, a butterfly plate, a corrugated pipe, an upper valve rod, a lower valve rod, an upper valve rod driving device and a moving shaft arranged between the upper valve rod and the lower valve rod. When the moving shaft has axial displacement, the corrugated pipe correspondingly has axial elastic deformation; compared with the butterfly valve which adopts the flexible seal packing to match with the valve rod in the dynamic seal way in the prior art, the corrugated pipe has no relative movement with the moving shaft when the moving shaft moves; the friction loss is avoided so that the sealing performance is improved greatly; the zero-leakage of the conveyed medium is guaranteed; furthermore, the application range of the butterfly valve is extended; the market competitiveness of the product is improved.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of pneumatic bellows butterfly valve.
Background technique
Butterfly valve is a kind of common valve, and therefore advantages such as open-close convenient, aperture are big, simple structure that it has are used widely, and have caused the very big demand in market.Existing reed valve is because the Sealing at stuffing box place all belongs to soft sealed packing, and in use, because the friction and the pressure that constantly rotatablely moved by valve rod, soft sealed packing will be out of shape consume gradually and produce leakage-gap, cause the medium seepage.And soft sealed packing generally only is applicable to the medium of 40 ℃ ~ 180 ℃ of temperature ranges, surpasses this temperature range, and the soft sealed packing sealing effect just obviously descends.Need carry high temperature, poisonous, inflammable, explosive, perishable, occasion that media such as radiativity are arranged at some, need guarantee the zero leakage of medium, in case, will cause serious threat environment, operator because medium is revealed.The existing butterfly valve that adopts soft sealed packing to cooperate with the valve rod motive sealing can't guarantee the zero leakage of medium, thereby has greatly limited its using scope.
The model utility content
The purpose of this utility model is to overcome the prior art defective, and a kind of pneumatic bellows butterfly valve of fed sheet of a media zero leakage is provided.
In order to realize above purpose, the utility model is by the following technical solutions: a kind of pneumatic bellows butterfly valve, include valve gap, valve body, the dish plate, it is characterized in that: described pneumatic bellows butterfly valve also is provided with bellows, upper valve rod, lower valve rod, the upper valve rod drive unit, be provided with a shifting axle between upper valve rod and the lower valve rod, be located in the valve gap to the axial activity radial location of this shifting axle, upper valve rod, lower valve rod and shifting axle three are coaxially set, the two ends up and down of this shifting axle are respectively equipped with and upper valve rod and the suitable center hole of lower valve rod, one end of upper valve rod and upper valve rod drive unit radially transmission cooperate, the other end stretches in the center hole, one end of lower valve rod stretches into down center hole, the other end and dish plate coaxial rotation, be respectively equipped with arc skewed slot and arc lower skewed slot on the upper and lower center hole sidewall of last center hole sidewall, the end that upper valve rod and lower valve rod stretch into center hole be respectively equipped with radially protrude on pull pin and under pull pin, on pull pin and under pull pin and be stuck in arc skewed slot and the arc lower skewed slot, bellows is set on the shifting axle, the movable end and the shifting axle of bellows are connected as a single entity, and the opening end of bellows is connected the joint of valve gap and valve body hermetically.
The beneficial effects of the utility model are: when the utility model opens and closes, the upper valve rod drive unit drives the upper valve rod rotation and then drives the rotation of pulling pin, because the axial activity radial location of shifting axle is provided with, on pull pin and the mating reaction of last arc skewed slot transfers upper valve rod to the axial activity of shifting axle, pull pin down and again the axial activity of shifting axle is transferred to the rotation of lower valve rod with the arc lower skewed slot, thereby drive the rotation of dish plate, realize the switching of valve.Be arranged with bellows on the shifting axle, the movable end and the shifting axle of bellows are connected as a single entity, and the opening end of bellows is connected the joint of valve gap and valve body hermetically.Shifting axle is when axial displacement, correspondingly axial elasticity deformation takes place in bellows, compare the existing butterfly valve that adopts soft sealed packing to cooperate with the valve rod motive sealing, bellows does not have relative movement between bellows and the shifting axle when shifting axle is movable, frictional loss can not take place, thereby its sealability improves greatly, can guarantee the zero leakage of fed sheet of a media, and then enlarge the application area of butterfly valve, improve the competitiveness of product in market.
Below in conjunction with accompanying drawing the utility model is described in further detail
Description of drawings
Fig. 1 is the utility model specific embodiment structural representation;
Embodiment
As shown in Figure 1, a kind of pneumatic bellows butterfly valve includes valve gap 5, valve body 15, dish plate 9, bellows 13, upper valve rod 3, lower valve rod 7, upper valve rod drive unit 1.Upper valve rod drive unit 1 in the present embodiment adopts pneumatic actuating device, can certainly adopt drive units such as manual, electronic, hydraulic pressure.Upper valve rod drive unit 1 drives upper valve rod 3 and rotates.Be provided with a shifting axle 4 between upper valve rod 3 and the lower valve rod 7, this shifting axle 4 is located in the valve gap 5, the sidewall of shifting axle 4 is provided with a groove 11 vertically, valve gap 5 is provided with a location latch 12, this fastening screw 12 inserts in grooves 11, makes shifting axle 4 axially activity and radial location in valve gap 5.Upper valve rod 3, lower valve rod 7 and shifting axle 4 threes are coaxially set.The two ends up and down of shifting axle 4 are respectively equipped with the center hole suitable with upper valve rod 3 and lower valve rod 7.One end of upper valve rod 3 and upper valve rod drive unit 1 radially transmission cooperate, and the other end stretches in the center hole, and an end of lower valve rod 7 stretches into down center hole, the other end and dish plate 9 coaxial rotation.Be respectively equipped with arc skewed slot 2 and arc lower skewed slot 6 on last center hole and the following center hole sidewall, the end that upper valve rod 3 and lower valve rod 7 stretch into center hole be respectively equipped with radially protrude on pull pin 10 and pull pin 14 down, on pull pin 10 with under pull pin and 14 be stuck in arc skewed slot 2 and the arc lower skewed slot 6.Bellows 13 is set on the shifting axle 4, and the movable end of bellows 13 and shifting axle 4 are connected as a single entity, and the opening end of bellows 13 is connected the joint of valve gap 5 and valve body 15 hermetically.The movable end of bellows 13 is welded on the sidewall of shifting axle 4, and bellows 13 opening ends are welded with flange plate 8, and this flange plate 8 is folded between bonnet flange dish and the valve flange dish and uses bolt.
When the utility model opens and closes, upper valve rod drive unit 1 drives upper valve rod 3 and rotates, pull pin on upper valve rod 3 drives and 10 rotate, block can only the radial location along moving axially for latch 12 because shifting axle 4 is positioned, on 10 compressings of pulling pin go up arc skewed slot 2 shifting axle 4 moved vertically.When shifting axle 4 moved, 14 rotations of pulling pin under 14 drives of pulling pin under 6 compressings of arc lower skewed slot, and then 9 rotations of lower valve rod 7 drive dish plates realized the switching of butterfly valve.The movable end of bellows 13 is welded on the sidewall of shifting axle 4, and when shifting axle 4 moved, correspondingly axial elasticity deformation took place bellows 13, does not have relative movement between bellows 13 and the shifting axle 4, frictional loss can not take place, thereby its sealability improves greatly.Valve gap 5 also passes through encapsulation process with valve body 15 joints, and bellows 13 opening ends are welded with flange plate 8, and this flange plate 8 is folded between bonnet flange dish and the valve flange dish and uses bolt.
Using scope of the present utility model is wide, can carry high temperature and cryogenic media.Can carry harmful, the poisonous inflammable and explosive medium of burn into arranged.The automatic program control and Remote that can be widely used in fields such as nuclear power, chemical industry, oil, mine, metallurgy, printing and dyeing uses the obvious remarkable in economical benefits of its extensive market effect.
Claims (5)
1. pneumatic bellows butterfly valve, include valve gap, valve body, the dish plate, it is characterized in that: described pneumatic bellows butterfly valve also is provided with bellows, upper valve rod, lower valve rod, the upper valve rod drive unit, be provided with a shifting axle between upper valve rod and the lower valve rod, be located in the valve gap to the axial activity radial location of this shifting axle, upper valve rod, lower valve rod and shifting axle three are coaxially set, the two ends up and down of this shifting axle are respectively equipped with and upper valve rod and the suitable center hole of lower valve rod, one end of upper valve rod and upper valve rod drive unit radially transmission cooperate, the other end stretches in the center hole, one end of lower valve rod stretches into down center hole, the other end and dish plate coaxial rotation, be respectively equipped with arc skewed slot and arc lower skewed slot on the upper and lower center hole sidewall of last center hole sidewall, the end that upper valve rod and lower valve rod stretch into center hole be respectively equipped with radially protrude on pull pin and under pull pin, on pull pin and under pull pin and be stuck in arc skewed slot and the arc lower skewed slot, bellows is set on the shifting axle, the movable end and the shifting axle of bellows are connected as a single entity, and the opening end of bellows is connected the joint of valve gap and valve body hermetically.
2. pneumatic bellows butterfly valve according to claim 1 is characterized in that: described shifting axle is provided with a groove vertically, and valve gap is provided with a location latch, and this fastening screw inserts the described shifting axle radial location of the interior formation of groove cooperation is set.
3. pneumatic bellows butterfly valve according to claim 1 and 2 is characterized in that: the movable end of bellows is welded on the sidewall of shifting axle.
4. pneumatic bellows butterfly valve according to claim 1 and 2 is characterized in that: the bellows opening end is welded with flange plate, and this flange plate is folded between bonnet flange dish and the valve flange dish and uses bolt.
5. pneumatic bellows butterfly valve according to claim 3 is characterized in that: the bellows opening end is welded with flange plate, and this flange plate is folded between bonnet flange dish and the valve flange dish and uses bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201200429U CN201202819Y (en) | 2008-06-18 | 2008-06-18 | Pneumatic corrugated pipe butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201200429U CN201202819Y (en) | 2008-06-18 | 2008-06-18 | Pneumatic corrugated pipe butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201202819Y true CN201202819Y (en) | 2009-03-04 |
Family
ID=40425130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201200429U Expired - Fee Related CN201202819Y (en) | 2008-06-18 | 2008-06-18 | Pneumatic corrugated pipe butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201202819Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102414491A (en) * | 2009-04-22 | 2012-04-11 | 罗伯特·博世有限公司 | valve for flow control |
| CN105952914A (en) * | 2016-07-14 | 2016-09-21 | 杭州安其拉科技有限公司 | Ammonia valve |
| CN115111382A (en) * | 2021-03-18 | 2022-09-27 | 中国石油化工股份有限公司 | Shaft end seal for high-temperature butterfly valve |
-
2008
- 2008-06-18 CN CNU2008201200429U patent/CN201202819Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102414491A (en) * | 2009-04-22 | 2012-04-11 | 罗伯特·博世有限公司 | valve for flow control |
| CN105952914A (en) * | 2016-07-14 | 2016-09-21 | 杭州安其拉科技有限公司 | Ammonia valve |
| CN115111382A (en) * | 2021-03-18 | 2022-09-27 | 中国石油化工股份有限公司 | Shaft end seal for high-temperature butterfly valve |
| CN115111382B (en) * | 2021-03-18 | 2025-03-07 | 中国石油化工股份有限公司 | A shaft end seal that can be used for high temperature butterfly valves |
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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: 20090304 Termination date: 20140618 |
|
| EXPY | Termination of patent right or utility model |