CN2594569Y - Knife-type flat gate valve with reliable sealing - Google Patents
Knife-type flat gate valve with reliable sealing Download PDFInfo
- Publication number
- CN2594569Y CN2594569Y CN 02287693 CN02287693U CN2594569Y CN 2594569 Y CN2594569 Y CN 2594569Y CN 02287693 CN02287693 CN 02287693 CN 02287693 U CN02287693 U CN 02287693U CN 2594569 Y CN2594569 Y CN 2594569Y
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- valve body
- sealing
- air bag
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 7
- 229920001971 elastomer Polymers 0.000 claims abstract description 4
- 239000005060 rubber Substances 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- -1 polytetrafluoroethylene Polymers 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 210000004712 air sac Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Check Valves (AREA)
Abstract
The utility model relates to a seal structure field of gate valve that dams of liquid, including knife type flashboard, the valve rod of connecting the flashboard, disk seat, at the left and right valve body of flashboard both sides, set up continuous recess about between the valve body, arrange U type rubber gasbag in the lower part of recess, the sealing strip of making by the polytetrafluoroethylene material is arranged on upper portion, gasbag and sealing strip centre gripping are in left and right valve body. The air bag sealing element has a self-compensating effect under the condition of abrasion, so that the air bag sealing element is not easy to leak, has a good sealing effect and a long service life, and is convenient and economic to maintain; meanwhile, due to the self-compensation sealing performance, the processing precision of the groove can be reduced, and the processing cost of the gate valve is reduced.
Description
Technical field
The utility model relates to the dam sealing configuration field of gate valve of liquid.
Background technique
At present, gate valve is widely used in and works the effect of damming in the fluid line arrangement, generally all by valve body, valve plate, valve seat, valve rod, plug-in strip and seal arrangement are formed, and seal arrangement adopts rubber or other material, basic principle is: a left side, the fastening connection of right two valve plate bolts, make seal compression be deformed to the effect of plane sealing, plug-in strip then is the rigid end face that acts on sealing of valve rod, make the sealing radial compression and play the sealing use, like this, frictional force and extruding force between plug-in strip and seal face are bigger, very easily cause the wearing and tearing of sealing surface and lose sealing effect, and working life is shorter.
Technological scheme
The utility model purpose is to have the long-term seal performance for fluid provides a kind of, prolong the gate valve cutter type plate valve with reliable sealing in working life.
The utility model comprises cutter type flashboard, connects the valve rod of flashboard, valve seat, at the left and right valve body of flashboard both sides, it is characterized in that between the valve body of the left and right sides, being provided with continuous groove, at the lower disposed U of groove type rubber pneumatic bag, the Stamping Steel Ribbon of being made by polytetrafluoroethylmaterial material is arranged on top, and air bag and Stamping Steel Ribbon are clamped in the left and right valve body.
Because the air bag that the teflon blending material is made is fixed in the valve body of the left and right sides, its upper surface has certain rigidity, then there are certain elasticity and tensile strength in bi-side, be filled with gas in the air bag more than or equal to working pressure, make the upper surface of air bag a little more than the groove of valve body, plug-in strip is pressed on the upper surface of air bag under the effect of valve rod, make air bag compressive strain, chamber pressure increases, thereby the upper surface of air bag is close on the plug-in strip surface, play seal action, its characteristics are that air sac sealing spare has the compensation effect of self under the situation of wearing and tearing, thereby are difficult for leaking good sealing effect, long service life, and easy to maintenance, economical; Simultaneously, because its self compensation sealing that has can reduce the machining accuracy to groove, reduce the processing cost of gate valve.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 overlooks enlarged diagram for the cross section of the utility model bottom
Among the figure, 1 left valve barrel, 2 clamping bolts, 3 right valve barrels, 4 air bags, 5 flashboards, 6 grooves, 7 Stamping Steel Ribbons, 8 valve rods, 9 valve seats, 10 clamping elements.
Specific embodiment
Flashboard 5 is connected the lower end of valve rod 8, and valve rod 8 is supported on the top of valve seat 9, connects left valve barrel 1 and right valve barrel 3 at 9 times seats of valve seat.Circular left valve barrel 1 has L type step towards the mask of right valve barrel 3, form groove 6, circular right valve barrel 3 is the plane for the face towards left valve barrel 1, in the bottom of left and right valve body 1,3, in groove 6, insert U type air bag 4, the root of air bag 4 is clamped in 1,3 of left and right valve bodies by clamping bolt 2.
Air bag 4 is made by synthetic rubber or natural rubber material.
The left and right sides Stamping Steel Ribbon made from polytetrafluoroethylmaterial material 7 passes through the upper end of clamping element 10 relative fixed at left and right sides valve body 1,3 respectively.
Claims (1)
1, the cutter type plate valve that has reliable sealing, comprise cutter type flashboard, connect the valve rod, valve seat of flashboard, at the left and right valve body of flashboard both sides, it is characterized in that between the valve body of the left and right sides, being provided with continuous groove, at the lower disposed U of groove type rubber pneumatic bag, the Stamping Steel Ribbon of being made by polytetrafluoroethylmaterial material is arranged on top, and air bag and Stamping Steel Ribbon are clamped in the left and right valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02287693 CN2594569Y (en) | 2002-12-18 | 2002-12-18 | Knife-type flat gate valve with reliable sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02287693 CN2594569Y (en) | 2002-12-18 | 2002-12-18 | Knife-type flat gate valve with reliable sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2594569Y true CN2594569Y (en) | 2003-12-24 |
Family
ID=33747896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02287693 Expired - Lifetime CN2594569Y (en) | 2002-12-18 | 2002-12-18 | Knife-type flat gate valve with reliable sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2594569Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373614A (en) * | 2014-11-07 | 2015-02-25 | 兰州高压阀门有限公司 | Desulfurization and denitrification sluice valve sealed through rubber |
| CN105673882A (en) * | 2016-03-25 | 2016-06-15 | 永嘉县恒正阀门有限公司 | Gate valve |
| CN112178231A (en) * | 2020-10-27 | 2021-01-05 | 北京洁绿环境科技股份有限公司 | Air bag sealed high-temperature high-pressure knife gate valve |
-
2002
- 2002-12-18 CN CN 02287693 patent/CN2594569Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373614A (en) * | 2014-11-07 | 2015-02-25 | 兰州高压阀门有限公司 | Desulfurization and denitrification sluice valve sealed through rubber |
| CN105673882A (en) * | 2016-03-25 | 2016-06-15 | 永嘉县恒正阀门有限公司 | Gate valve |
| CN112178231A (en) * | 2020-10-27 | 2021-01-05 | 北京洁绿环境科技股份有限公司 | Air bag sealed high-temperature high-pressure knife gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121218 Granted publication date: 20031224 |