CN201209681Y - Pneumatic bellows plug valve - Google Patents
Pneumatic bellows plug valve Download PDFInfo
- Publication number
- CN201209681Y CN201209681Y CNU2008201200448U CN200820120044U CN201209681Y CN 201209681 Y CN201209681 Y CN 201209681Y CN U2008201200448 U CNU2008201200448 U CN U2008201200448U CN 200820120044 U CN200820120044 U CN 200820120044U CN 201209681 Y CN201209681 Y CN 201209681Y
- Authority
- CN
- China
- Prior art keywords
- valve rod
- bellows
- shifting axle
- stopcock
- upper valve
- 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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- Details Of Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a pneumatic corrugated tube stopcock, which comprises a valve cap, a valve body, a faucet, a corrugated tube, an upper valve stem, a lower valve stem and an upper valve stem drive device. A shifting shaft is arranged between the upper valve stem and the lower valve stem. When the shifting shaft is displaced in the axial direction, the corrugated tube is deformed elastically in the axial direction correspondingly. By comparing the pneumatic corrugated tube stopcock with the prior stopcock adopting soft packing material and a valve stem dynamic seal, the corrugated tube does not move relative to the shifting shaft when the shifting shaft moves,so the friction loss is avoided, thus significant improving the sealability and ensuring zero leakage of conveyance media. In this way, the application scope of the stopcock is enlarged and the marketability of the product is improved.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of pneumatic bellows stopcock.
Background technique
Stopcock is a kind of common valve, but the medium of both transporting liquid state of stopcock, gaseous state, solid-state a single state, medium that again can the liquid-solid mixing shape of transporting.Because using scope is extensive, so caused the very big demand in market.Existing stopcock 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 stopcock 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 stopcock 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 stopcock, include valve gap, valve body, cock, it is characterized in that: described pneumatic bellows stopcock 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 cock 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 cock, 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 stopcock 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 stopcock, 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 stopcock includes valve gap 5, valve body 15, cock 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 cock 9 coaxial rotation.Be respectively equipped with arc skewed slot 2 and arc lower skewed slot 6 on the upper and lower center hole sidewall of last 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 valve gap 5 flange plate and valve body 15 flange plate 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 lower valve rod 7 drive cocks 9 rotations realized the switching of cock 9 valves.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 valve gap 5 flange plate and valve body 15 flange plate 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 stopcock, include valve gap, valve body, cock, it is characterized in that: described pneumatic bellows stopcock 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 cock 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 stopcock 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 stopcock 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 stopcock 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 stopcock 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 |
|---|---|---|---|
| CNU2008201200448U CN201209681Y (en) | 2008-06-18 | 2008-06-18 | Pneumatic bellows plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201200448U CN201209681Y (en) | 2008-06-18 | 2008-06-18 | Pneumatic bellows plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209681Y true CN201209681Y (en) | 2009-03-18 |
Family
ID=40480417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201200448U Expired - Fee Related CN201209681Y (en) | 2008-06-18 | 2008-06-18 | Pneumatic bellows plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209681Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840853A (en) * | 2016-06-01 | 2016-08-10 | 开平市凯赛德水暖配件有限公司 | Waterproof ceramic mixer |
-
2008
- 2008-06-18 CN CNU2008201200448U patent/CN201209681Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840853A (en) * | 2016-06-01 | 2016-08-10 | 开平市凯赛德水暖配件有限公司 | Waterproof ceramic mixer |
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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: 20090318 Termination date: 20140618 |
|
| EXPY | Termination of patent right or utility model |