CN207246452U - Gas stop valve - Google Patents
Gas stop valve Download PDFInfo
- Publication number
- CN207246452U CN207246452U CN201720732925.4U CN201720732925U CN207246452U CN 207246452 U CN207246452 U CN 207246452U CN 201720732925 U CN201720732925 U CN 201720732925U CN 207246452 U CN207246452 U CN 207246452U
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- China
- Prior art keywords
- valve
- executing agency
- rod
- valve plate
- traffic channel
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Abstract
The utility model discloses a kind of gas stop valve, it includes valve body, executing agency and the locator being connected with the executing agency, the input terminal of the executing agency is provided with pressure reducing valve, and the output terminal of the executing agency is provided with connecting shaft, and the output terminal of the connecting shaft is connected with valve rod；The outlet of the traffic channel of the valve body is equipped with valve plate, and the valve plate connects the valve rod by quadric chain, and the valve rod passes through the side wall of the traffic channel and deviates the center of the traffic channel.The utility model is simple in structure, and by setting filler, sealing effect is good, and leakage rate is small；The utility model pneumatic control, low pressure heavy caliber are adjusted, good airproof performance, open and close torque is low, light-weight, is designed using unique four-bar linkage structure, in valve switch, valve plate does not scrape valve seat, while also substantially increases controllable ratio, is a kind of widely used high-performance regulating valve.
Description
Technical field
It the utility model is related to a kind of gas stop valve.
Background technology
Required in the industries such as power station, smelting, light textile, glass, cement to the sky in pipe-line system in automatic control production process
The media such as gas, flue gas carry out control of shutting off.Being controlled occasion feature is：Heavy caliber, big flow, low voltage difference, low leakage and operation
Time and use temperature range requirement, to adapt to the application characteristic of these occasions, commutation stop valve comes into being, existing cut-out
Valve assembling is complicated, and it is not very convenient to safeguard, linkage is fragile.
Utility model content
The technical problems to be solved in the utility model is the defects of overcoming the prior art, there is provided a kind of gas stop valve.
In order to solve the above-mentioned technical problem, the utility model provides following technical solution：
The utility model provides a kind of gas stop valve, it includes valve body, executing agency and is connected with the executing agency
Locator, the input terminal of the executing agency is provided with pressure reducing valve, and the output terminal of the executing agency is provided with connecting shaft, institute
The output terminal for stating connecting shaft is connected with valve rod；The outlet of the traffic channel of the valve body is equipped with valve plate, and the valve plate connects by four
Linkage connects the valve rod, and the valve rod passes through the side wall of the traffic channel and deviates the center of the traffic channel.
Further, the quadric chain is made of valve plate base, bent axle, connecting rod and firm banking, the valve plate bottom
Seat is bolted on the valve plate, and is connected with one end of bent axle, connecting rod by axis pin；The bent axle other end passes through
Axis pin is fixed on the valve rod, and the other end of the connecting rod is fixed on valve plate base by axis pin；The firm banking leads to
Bolt is crossed to be fixed on the valve body.
Further, it is provided with stent between the valve body and the executing agency.
Further, filler is provided with the gap between the valve rod and the valve body, the filler passes through filler pressure
Lid is sealed, and the centre of the filler is provided with filler spacer.
Further, hold-down grid is provided with the gland, the hold-down grid passes through bolt and the valve body
It is fixedly connected.
Further, the valve rod is connected with the output terminal of the connecting shaft by fixture block.
Further, the bottom of the valve rod is provided with bottom flange.
Operation principle：Locator controls the air conveyed to cylinder, pressure by receiving 4~20mA DC current signals
Increase promotes piston overpowers spring force so that connecting shaft rotates, and connecting shaft is connected with valve rod with fixture block, thus valve rod and then connects
Spindle rotates, and the bent axle being fixed on valve rod drives the valve plate base motions being fixed on valve plate, and connecting rod is connected to valve plate base
And firm banking, it is achieved thereby that the rotation of valve plate；During no signal, cylinder closes valve by the elastic force of spring reset.
The beneficial effect that the utility model is reached is：
The utility model is simple in structure, and by setting filler, sealing effect is good, and leakage rate is small；The utility model is pneumatically controlled
System, low pressure heavy caliber are adjusted, and good airproof performance, open and close torque is low, light-weight, are designed using unique four-bar linkage structure, in valve
Valve plate does not scrape valve seat during switch, while also substantially increases controllable ratio, is a kind of widely used high-performance regulating valve.
Brief description of the drawings
Attached drawing is used to provide a further understanding of the present invention, and a part for constitution instruction, with this practicality
New embodiment is used to explain the utility model together, does not form the limitation to the utility model.In the accompanying drawings：
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the side structure schematic view of Fig. 1.
Embodiment
The preferred embodiment of the utility model is illustrated below in conjunction with attached drawing, it will be appreciated that described herein excellent
Select embodiment to be only used for describing and explaining the present invention, be not used to limit the utility model.
As depicted in figs. 1 and 2, the utility model provides a kind of gas stop valve, it include valve body 1, executing agency 2 and with
The locator 3 that the executing agency 2 connects, the input terminal of the executing agency 2 are provided with pressure reducing valve 4, the executing agency 2
Output terminal is provided with connecting shaft 5, and the output terminal of the connecting shaft 5 is connected with valve rod 6；The traffic channel 101 of the valve body 1 goes out
Mouth is equipped with valve plate 7, and the valve plate 7 connects the valve rod 6 by quadric chain 8, and the valve rod 6 passes through the traffic channel
101 side wall and the center for deviateing the traffic channel 101.In the present embodiment, executing agency is pneumatic actuator.
The quadric chain 8 is made of valve plate base, bent axle, connecting rod and firm banking, and the valve plate base passes through spiral shell
Bolt is fixed on the valve plate, and is connected with one end of bent axle, connecting rod by axis pin；The bent axle other end is fixed by axis pin
On the valve rod, the other end of the connecting rod is fixed on valve plate base by axis pin；The firm banking is consolidated by bolt
It is scheduled on the valve body.Stent 9 is provided between the valve body 1 and the executing agency 2.The valve rod 6 and the valve body 1 it
Between gap in be provided with filler, the filler is sealed by gland, the centre of the filler be provided with filler every
Set.Hold-down grid 10 is provided with the gland, the hold-down grid 10 is fixedly connected by bolt with the valve body 1.
The valve rod 6 is connected with the output terminal of the connecting shaft 5 by fixture block 11.The bottom of the valve rod 6 is provided with bottom flange 12.
Wherein, valve body main function ensures to be connected with pipeline, accepts trim and backing positions are fixed, valve inner is inclined
The heart designs；Valve plate is double eccentric four-bar linkage structure designs, is rotated by valve rod and drives parallel motion；Valve rod runs through execution machine
Inside structure, with valve plate, play primary drive；Valve seat can be the soft sealing material such as metal sealing, fluorubber, silicon rubber；Bottom method
The fixed valve plate of orchid is used, and anti-pellet design, blocks medium to enter protection valve plate normal operation；Supply pressure is adjusted to fixed by pressure reducing valve
Pressure value needed for position device and control device；Locator receives 4~20mA DC current signals from control system, and to straight trip
Journey pneumatic actuator conveying air comes control valve position；Gas pressure is in overcoming spring force when executing agency ventilates on piston
The thrust of generation, connecting shaft rotate, and elastic force when losing gas by spring reset makes connecting shaft recover initial position.
Operation principle：Locator controls the air conveyed to cylinder, pressure by receiving 4~20mA DC current signals
Increase promotes piston overpowers spring force so that connecting shaft rotates, and connecting shaft is connected with valve rod with fixture block, thus valve rod and then connects
Spindle rotates, and the bent axle being fixed on valve rod drives the valve plate base motions being fixed on valve plate, and connecting rod is connected to valve plate base
And firm banking, it is achieved thereby that the rotation of valve plate；During no signal, cylinder closes valve by the elastic force of spring reset.
The utility model is simple in structure, and by setting filler, sealing effect is good, and leakage rate is small；The utility model is pneumatically controlled
System, low pressure heavy caliber are adjusted, and good airproof performance, open and close torque is low, light-weight, are designed using unique four-bar linkage structure, in valve
Valve plate does not scrape valve seat during switch, while also substantially increases controllable ratio, is a kind of widely used high-performance regulating valve.
Finally it should be noted that：The above descriptions are merely preferred embodiments of the present invention, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify the technical solution described in foregoing embodiments, or to which part technical characteristic
Carry out equivalent substitution.Where within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (5)
1. gas stop valve, it is characterised in that including valve body, executing agency and the locator being connected with the executing agency, institute
The input terminal for stating executing agency is provided with pressure reducing valve, and the output terminal of the executing agency is provided with connecting shaft, the connecting shaft
Output terminal is connected with valve rod；The outlet of the traffic channel of the valve body is equipped with valve plate, and the valve plate is connected by quadric chain
The valve rod, the valve rod pass through the side wall of the traffic channel and deviate the center of the traffic channel；The double leval jib machine
Structure is made of valve plate base, bent axle, connecting rod and firm banking, and the valve plate base is bolted on the valve plate, and
It is connected with one end of bent axle, connecting rod by axis pin；The bent axle other end is fixed on the valve rod by axis pin, the connecting rod
The other end be fixed on by axis pin on valve plate base；The firm banking is bolted on the valve rod on the valve body
Filler is provided with gap between the valve body, the filler is sealed by gland, the centre of the filler
It is provided with filler spacer.
2. gas stop valve according to claim 1, it is characterised in that set between the valve body and the executing agency
There is stent.
3. gas stop valve according to claim 1, it is characterised in that hold-down grid is provided with the gland,
The hold-down grid is fixedly connected by bolt with the valve body.
4. gas stop valve according to claim 1, it is characterised in that the valve rod and the output terminal of the connecting shaft lead to
Cross fixture block connection.
5. gas stop valve according to claim 1, it is characterised in that the bottom of the valve rod is provided with bottom flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720732925.4U CN207246452U (en) | 2017-06-22 | 2017-06-22 | Gas stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720732925.4U CN207246452U (en) | 2017-06-22 | 2017-06-22 | Gas stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207246452U true CN207246452U (en) | 2018-04-17 |
Family
ID=61877267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720732925.4U Active CN207246452U (en) | 2017-06-22 | 2017-06-22 | Gas stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207246452U (en) |
-
2017
- 2017-06-22 CN CN201720732925.4U patent/CN207246452U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |