CN205479377U - Pneumatic shut -off valve - Google Patents
Pneumatic shut -off valve Download PDFInfo
- Publication number
- CN205479377U CN205479377U CN201620283723.1U CN201620283723U CN205479377U CN 205479377 U CN205479377 U CN 205479377U CN 201620283723 U CN201620283723 U CN 201620283723U CN 205479377 U CN205479377 U CN 205479377U
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- valve
- diaphragm seal
- fluid
- fluid via
- valve body
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Abstract
The utility model relates to a pneumatic shut -off valve, which comprises the following components: a valve body, valve rod and valve clack, it is piston chamber and fluid cavity to be provided with the space separation of baffle in with the valve body in the valve body, be provided with on the baffle and supply the valve rod to follow the main entrance that the piston chamber extended to the fluid cavity, be provided with the sealed complex fluid via hole of valve clack in the fluid cavity, the valve clack includes preceding gasket and back gasket, back gasket cooperates with the end face seal of fluid via hole towards the valve rod, preceding gasket is located the opposite side of the relative valve rod of back gasket and afterwards is provided with the extension rod between the gasket, preceding gasket is provided with the sealed shirt rim of flexible all around, preceding sealing stretches into the fluid via hole at the terminal surface of back gasket and fluid via hole to the timing, sealed shirt rim is compressed between the pore wall of preceding gasket and fluid via hole, sealed shirt rim is provided with the guide slope of the sealed shirt rim of guide fluid via hole edge compression on the terminal surface of fluid via hole. When the scheme is adopted, the utility model provides an extension valve clack life and the better pneumatic shut -off valve of leakproofness.
Description
Technical field
This utility model relates to a kind of valve, is specifically related to a kind of pneumatic cut-off valve.
Background technology
Pneumatic cut-off valve is all the function playing fast shut-off, has simple in construction, is quick on the draw,
The features such as reliable in action.The commercial production portions such as oil, chemical industry, metallurgy can be widely used in
Door.The source of the gas of pneumatic cut-off valve requires filtered compressed air, and flowing through the medium in valve body should
This is free from admixture and agranular liquids and gases.Pneumatic cut-off valve is classified: plain edition is pneumatic starves
Stop valve, Quick emergency pneumatic stop valve.
Pneumatic cut-off valve includes valve body, valve rod and flap, is provided with dividing plate by valve body in valve body
Space be divided into plunger shaft above and be positioned at lower section fluid cavity, setting in plunger shaft
Being equipped with the piston that relative valve body is vertically movable, valve rod is vertically arranged relative to valve body, position, valve rod one end
Arranging with piston linkage in plunger shaft, the other end is positioned at fluid cavity for installing flap, on dividing plate
It is provided with the main channel extending to fluid cavity for valve rod from plunger shaft, in fluid cavity, is provided with flap
Seal the fluid via coordinated, owing to the position of piston is to inflate to plunger shaft and coordinate spring to enter
Row regulation, it is a process ramped up that piston once starts, until flap and fluid via
Hole wall offset and just stop, this results in flap when cutting off fluid every time all can clash into fluid via
Hole wall, the long-time sealing property using flap declines very fast.
Summary of the invention
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of prolongation
Flap service life and the preferable pneumatic cut-off valve of sealing.
For achieving the above object, this utility model provides following technical scheme: include valve body,
Valve rod and flap, be provided with dividing plate and be divided in the space in valve body and be positioned in described valve body
The plunger shaft of side and be positioned at the fluid cavity of lower section, is provided with relative valve body in described plunger shaft
Vertically movable piston, described valve rod vertically arranges relative to valve body, described position, valve rod one end
Arranging in the linkage of plunger shaft and piston, the other end is positioned at fluid cavity for installing flap, described
The main channel extending to fluid cavity for valve rod from plunger shaft, described fluid cavity it is provided with on dividing plate
Inside it is provided with flap and seals the fluid via coordinated, it is characterised in that: described flap includes edge
The front diaphragm seal being disposed with away from the direction of fluid via and rear diaphragm seal, described is rear close
Mounting coordinates towards the end face seal of valve rod with fluid via, and described front diaphragm seal is close after being positioned at
Mounting relative to being provided with extension rod between the opposite side of valve rod and rear diaphragm seal, described front sealing
Sheet surrounding is provided with flexible sealing shirt rim, and described front sealing is at rear diaphragm seal and fluid
The end face of via supports timing and stretches into fluid via, seals shirt rim and is compressed in front diaphragm seal and fluid mistake
Between the hole wall in hole, the described shirt rim that seals is provided with guiding stream on the end face of fluid via
The lead-in chamfered of body via edges compression seal shirt rim.
By using technique scheme, rear diaphragm seal is original valve clack sealing structure, by
Can contact with fluid via in advance and by sealing the hole of shirt rim and fluid via in sealing shirt rim
Frictional force between wall reduces the translational speed of valve rod, so after diaphragm seal soon close to fluid mistake
The time in hole, with the end contact of shallower speed Yu fluid via, until fully sealing, protects
Demonstrate,prove the rear diaphragm seal relative with the end face large area of fluid via will not again in moving process because hitting
Hit and cause damage, on the other hand, and seal shirt rim and seal as first with the hole wall of fluid via,
Also the sealing property that valve body is overall is further increased, even if sealing shirt rim to lose sealing function,
Rear diaphragm seal also can guarantee that fluid will not be revealed, and makes valve body have enough service life.
This utility model is further arranged to: described front diaphragm seal is provided with and passes for extension rod
Installing hole, described extension rod is positioned at the both sides of front diaphragm seal and is provided with and joins with extension rod screw thread
The installation bolt closed.
By using technique scheme, owing to the service life of rear diaphragm seal is longer, therefore by front
Diaphragm seal is arranged to easy-disassembling-assembling, on the one hand according to different valve body regulation relative position, material
Matter and size, on the other hand, install the fixed form structure letter that bolt forms with extension rod
Single, can not fill by Fast Blind by the premise of the visual field.
This utility model is further arranged to: described piston plunger shaft is divided into epicoele and under
Chamber, described dividing plate is provided with the lower communication passage being connected with source of the gas by cavity of resorption, described valve
It is provided with the upper communication passage of epicoele with extraneous UNICOM on body, this is provided with in communication passage
Openable closed component.
By using technique scheme, epicoele is closed, utilizes the change in volume of epicoele
Coordinating quantitative gas to give valve rod declining with buffering, its cushion effect is by the gas volume of epicoele
Size determines, intracavity gas body in piston compression easy adjustment with openable closed component
Long-pending, it is more convenient to operate.
This utility model is further arranged to: described closed component includes that cross section is more than the first line of a couplet
Circulation passage is also positioned at the closing block outside valve body, and this closing block is provided with the tune extending to intracavity
Pole, described adjusting rod is positioned at the end of intracavity and is provided with movable block, and this movable block is with upper
It is provided with movable block between cavity wall to away from the back-moving spring closing block reset.
By using technique scheme, when needs reduce cushion effect, manually block is closed in stretching,
Will epicoele and extraneous UNICOM, gas is poured cavity of resorption by source of the gas, and the gas of epicoele is discharged, directly
To correct position, decontrol closing block and can complete regulating step.
With detailed description of the invention, this utility model is further described below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model detailed description of the invention.
Detailed description of the invention
As it is shown in figure 1, the utility model discloses a kind of pneumatic cut-off valve, including valve body 1,
Valve rod 2 and flap 3, be provided with dividing plate 11 and be divided in the space in valve body 1 in valve body 1
Plunger shaft 4 above and be positioned at the fluid cavity 5 of lower section, is provided with phase in plunger shaft 4
The piston 41 vertically movable to valve body 1, the relative valve body 1 of valve rod 2 vertically arranges, valve rod 2
One end is positioned at plunger shaft 4 and arranges with piston 41 linkage, and the other end is positioned at fluid cavity 5 for pacifying
Dress flap 3, dividing plate 11 is provided with and extends to fluid cavity 5 for valve rod 2 from plunger shaft 4
Main channel 111, is provided with flap 3 and seals the fluid via 51 coordinated, flap in fluid cavity 5
3 include along the front diaphragm seal 31 being disposed with away from the direction of fluid via 51 and after seal
Sheet 32, rear diaphragm seal 32 coordinates towards the end face seal of valve rod 2 with fluid via 51, front
Diaphragm seal 31 is between opposite side and the rear diaphragm seal 32 of the rear relative valve rod 2 of diaphragm seal 32
Being provided with extension rod 33, front diaphragm seal 31 surrounding is provided with flexible sealing shirt rim 311,
Front sealing stretches into fluid via at the end face of rear diaphragm seal 32 with fluid via 51 to timing
51, seal shirt rim 311 and be compressed between front diaphragm seal 31 and the hole wall of fluid via 51, close
Envelope shirt rim 311 is provided with guiding fluid via 51 edge pressure on the end face of fluid via 51
Contracting seals the lead-in chamfered 3111 of shirt rim 311, and it is close that rear diaphragm seal 32 is original flap 3
Seal structure, can contact with fluid via 51 owing to sealing shirt rim 311 in advance and pass through sealed skirt
Frictional force between the hole wall of limit 311 and fluid via 51 reduces the translational speed of valve rod 2,
After so diaphragm seal 32 soon close to time of fluid via 51 with shallower speed and fluid
The end contact of via 51, until fully sealing, it is ensured that big with the end face of fluid via 51
Long-pending relative rear diaphragm seal 32 will not cause damage because clashing in moving process again, on the other hand,
And seal shirt rim 311 and seal as first with the hole wall of fluid via 51, also further increase
The sealing property of valve body 1 entirety, even if sealing shirt rim 311 to lose sealing function, rear diaphragm seal
Also can guarantee that fluid will not be revealed, make valve body have enough service life, extension rod 33 with
Rear diaphragm seal 32 can be fixed through rear diaphragm seal 32 by extension rod 33.
Front diaphragm seal 31 is provided with the installing hole 312 passed for extension rod 33, extension rod 33
The both sides being positioned at front diaphragm seal 31 are provided with and the installation bolt 331 of extension rod 33 threaded engagement,
Owing to the service life of rear diaphragm seal 32 is longer, therefore it is arranged to front diaphragm seal 31 be prone to dismounting
, on the one hand relative position, material and size are regulated according to different valve bodies 1, on the other hand,
The fixed form simple in construction that bolt 331 forms is installed with extension rod 33, not by regarding
Can Fast Blind dress on the premise of open country.
Plunger shaft 4 is divided into epicoele 42 and cavity of resorption 43 by piston 41, and dividing plate 11 is provided with
The lower communication passage 431 being connected with source of the gas by cavity of resorption 43, valve body 1 is provided with epicoele 42
With the upper communication passage 421 of extraneous UNICOM, this is provided with openable in communication passage 421
Closed component, closes epicoele 42, utilizes the change in volume of epicoele 42 to coordinate quantitative
Gas gives valve rod 2 and is declining with buffering, and its cushion effect is by the gas volume size of epicoele 42
Determine, gas in piston 41 compresses easy adjustment epicoele 42 with openable closed component
Volume, it is more convenient to operate.
Closed component includes that cross section is more than communication passage 421 and is positioned at the envelope outside valve body 1
Closing block 6, this closing block 6 is provided with the adjusting rod 61 extended in epicoele 42, adjusting rod 61
The end being positioned at epicoele 42 is provided with movable block 62, this movable block 62 and epicoele 42 wall it
Between be provided with movable block 62 to away from closing the back-moving spring 63 that resets of block 6, drop at needs
At a low speed during impulse force, manually block 6 is closed in stretching, will epicoele 42 and extraneous UNICOM, source of the gas will
Gas pours cavity of resorption 43, and the gas of epicoele 42 is discharged, until after correct position, decontroling envelope
Close block 6 and can complete regulating step.
Claims (4)
1. a pneumatic cut-off valve, including valve body, valve rod and flap, sets in described valve body
It is equipped with dividing plate the space in valve body is divided into plunger shaft above and is positioned at the stream of lower section
Body cavity, is provided with the piston that relative valve body is vertically movable, described valve in described plunger shaft
Bar is vertically arranged relative to valve body, and described valve rod one end is positioned at plunger shaft and arranges with piston linkage,
The other end is positioned at fluid cavity for installing flap, described dividing plate is provided with for valve rod from piston
Chamber extends to the main channel of fluid cavity, is provided with flap and seals the stream coordinated in described fluid cavity
Body via, it is characterised in that: described flap includes setting successively along the direction away from fluid via
The front diaphragm seal being equipped with and rear diaphragm seal, described rear diaphragm seal and fluid via are towards valve rod
End face seal coordinate, described front diaphragm seal be positioned at rear diaphragm seal relative to valve rod opposite side with after
Being provided with extension rod between diaphragm seal, described front diaphragm seal surrounding is provided with flexible sealing
Shirt rim, described front sealing stretches into fluid at the end face of rear diaphragm seal with fluid via to timing
Via, seals between the hole wall that shirt rim is compressed in front diaphragm seal and fluid via, described sealing
Shirt rim is provided with guiding fluid via edges compression seal shirt rim on the end face of fluid via
Lead-in chamfered.
Pneumatic cut-off valve the most according to claim 1, it is characterised in that: before described
Diaphragm seal is provided with the installing hole passed for extension rod, and described extension rod is positioned at front diaphragm seal
Both sides are provided with the installation bolt with extension rod threaded engagement.
Pneumatic cut-off valve the most according to claim 1 and 2, it is characterised in that: described
Piston plunger shaft is divided into epicoele and cavity of resorption, described dividing plate is provided with cavity of resorption and gas
The lower communication passage of source linking, described valve body is provided with by the first line of a couplet of epicoele with extraneous UNICOM
Circulation passage, this is provided with in communication passage openable closed component.
Pneumatic cut-off valve the most according to claim 3, it is characterised in that: described envelope
Close assembly and include that cross section is more than communication passage and is positioned at the closing block outside valve body, this closing
Block is provided with the adjusting rod extending to intracavity, and described adjusting rod is positioned at the end of intracavity and sets
It is equipped with movable block, is provided with movable block between this movable block and upper cavity wall to multiple away from closing block
The back-moving spring of position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620283723.1U CN205479377U (en) | 2016-03-31 | 2016-03-31 | Pneumatic shut -off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620283723.1U CN205479377U (en) | 2016-03-31 | 2016-03-31 | Pneumatic shut -off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205479377U true CN205479377U (en) | 2016-08-17 |
Family
ID=56643345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620283723.1U Active CN205479377U (en) | 2016-03-31 | 2016-03-31 | Pneumatic shut -off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205479377U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090396A (en) * | 2016-08-23 | 2016-11-09 | 浙江信达可恩消防实业有限责任公司 | Integral type selector valve |
| CN109357066A (en) * | 2018-10-04 | 2019-02-19 | 盐城欧润石化设备制造有限公司 | A kind of interlocking valve |
| CN116989151A (en) * | 2023-09-27 | 2023-11-03 | 山东菲特自控阀门制造有限公司 | Multi-section controlled pneumatic stop valve |
-
2016
- 2016-03-31 CN CN201620283723.1U patent/CN205479377U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090396A (en) * | 2016-08-23 | 2016-11-09 | 浙江信达可恩消防实业有限责任公司 | Integral type selector valve |
| CN109357066A (en) * | 2018-10-04 | 2019-02-19 | 盐城欧润石化设备制造有限公司 | A kind of interlocking valve |
| CN116989151A (en) * | 2023-09-27 | 2023-11-03 | 山东菲特自控阀门制造有限公司 | Multi-section controlled pneumatic stop valve |
| CN116989151B (en) * | 2023-09-27 | 2023-12-19 | 山东菲特自控阀门制造有限公司 | Multi-section controlled pneumatic stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |