CN202674355U - Flat gate valve - Google Patents
Flat gate valve Download PDFInfo
- Publication number
- CN202674355U CN202674355U CN 201220317579 CN201220317579U CN202674355U CN 202674355 U CN202674355 U CN 202674355U CN 201220317579 CN201220317579 CN 201220317579 CN 201220317579 U CN201220317579 U CN 201220317579U CN 202674355 U CN202674355 U CN 202674355U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- flashboard
- seat
- wedge disc
- 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
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model relates to a flat gate valve, which comprises a valve body, a wedge disc, a valve cap and a valve rod. A valve body inlet and a valve body outlet are formed in the valve body. The wedge disc is connected to the lower end of the valve rod, and isolates the valve body inlet from the valve body outlet. The upper end of the valve rod is extended from a center hole of the valve cap, and is sealed with the center hole through a filler; valve seats are arranged on each of the two sides of the wedge disc respectively, and are embedded into a valve seat cavity of the valve body respectively; one end face of each of the valve seats faces the wedge disc, and a polytetrafluoroethylene valve seat ring is embedded into the end face; the polytetrafluoroethylene valve seat rings are tightly pressed on the wedge disc respectively; corrugated pipes and springs are arranged between the opposite end faces of the valve seats and the valve seat cavity; the corrugated pipes are coaxial with the valve body inlet and the valve body outlet; and the springs are uniformly distributed on the peripheries of the corrugated pipes. According to the valve, an elastic sealing structural form is adopted, and the springs and the corrugated pipes are used for compensating the thermal contraction of a sealing material, which is caused by temperature changes, so that influence on the sealing of the wedge disc is avoided.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of plate valve.
Background technique
Plate valve of the prior art, comprise valve body, flashboard, valve gap and valve rod, valve body is provided with valve body import and valve outlet, flashboard is connected to the lower end of valve rod with valve body import and valve outlet isolation, valve rod upper end passes from the center hole of valve gap and between the two by packing seal, the flashboard both sides are respectively equipped with valve seat, valve seat is flush-mounted in respectively in the valve support chamber of valve body and valve seat surface is embedded with respectively the teflon seat ring on the end face of flashboard, the teflon seat ring is pressed on respectively on the flashboard, seals by O type circle between valve seat excircle and the valve body.Because the heat between metal seat valve and the teflon seat ring is flexible asynchronous, when drop in temperature, the elasto plastic deformation of teflon seat ring just is not enough to compensate the thermal shrinkage that causes because of drop in temperature, the sealing of flashboard is destroyed, add that there is motive sealing in this structure, rubber o-ring is easily aging, therefore in actual motion, the seat ring of this gate valve easily leaks, and working life is not long.
The model utility content
The purpose of this utility model is, overcomes problems of the prior art, provides a kind of sealing reliable plate valve.
For solving above technical problem, a kind of plate valve provided by the utility model, comprise valve body, flashboard, valve gap and valve rod, described valve body is provided with valve body import and valve outlet, described flashboard is connected to the lower end of described valve rod with described valve body import and valve outlet isolation, described valve rod upper end passes from the center hole of described valve gap and between the two by packing seal, described flashboard both sides are respectively equipped with valve seat, described valve seat is flush-mounted in respectively in the valve support chamber of described valve body and valve seat surface is embedded with respectively the teflon seat ring on the end face of flashboard, described teflon seat ring is pressed on respectively on the described flashboard, described valve seat and described valve support chamber bellows and spring be installed between the end face in opposite directions, described bellows and described valve body import and valve outlet coaxial line, described spring is evenly distributed on the periphery of described bellows.
With respect to prior art, the utility model has been obtained following beneficial effect: teflon has stable chemical property, do not dissolve or do not swell in any known solvent, lubricity, flame retarding and anti-atmospheric aging with extremely low friction factor, excellence, thereby the teflon seat ring has good sealing under certain conditions; Because the heat between metal seat valve and the teflon seat ring is flexible asynchronous, when drop in temperature, the elasto plastic deformation of teflon seat ring just is not enough to compensate the thermal shrinkage that causes because of drop in temperature, this moment, bellows and spring provided elastic thrust jointly, guaranteed that sealing is reliable between teflon seat ring and the flashboard.Because this valve has adopted the elastic sealing structure form, compensate the thermal shrinkage that causes sealing material owing to temperature variation by spring and bellows, thereby the sealing that guarantees flashboard is unaffected.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail, accompanying drawing only provides reference and explanation usefulness, and is non-in order to limit the utility model.
Fig. 1 is the structural representation of the utility model plate valve.
Fig. 2 is the enlarged view at A position among Fig. 1.
Among the figure: 1. valve body; 2. flashboard; 3. valve rod; 4. valve gap; 5. filler; 6. valve seat; 6a. teflon seat ring; 7. bellows; 8. spring.
Embodiment
As shown in Figures 1 and 2, plate valve of the present utility model comprises valve body 1, flashboard 2, valve gap 4 and valve rod 3, valve body 1 is provided with valve body import and valve outlet, flashboard 2 is connected to the lower end of valve rod 3 with valve body import and valve outlet isolation, valve rod 3 upper ends pass from the center hole of valve gap 4 and seal by filler 5 between the two, flashboard 2 both sides are respectively equipped with valve seat 6, valve seat 6 is flush-mounted in respectively in the valve support chamber of valve body 1 and valve seat 6 is embedded with respectively teflon seat ring 6a on the end face of flashboard, teflon seat ring 6a is pressed on respectively on the flashboard 2, valve seat 6 and valve support chamber bellows 7 and spring 8 be installed between the end face in opposite directions, bellows 7 and valve body import and valve outlet coaxial line, spring 8 is evenly distributed on the periphery of bellows 7.When drop in temperature, the elasto plastic deformation of teflon seat ring 6a just is not enough to compensate the thermal shrinkage that causes because of drop in temperature, and this moment, bellows 7 and spring 8 provided elastic thrust jointly, guarantees that sealing is reliable between teflon seat ring 6a and the flashboard 2.
The above only is the better possible embodiments of the utility model, and is non-so limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (1)
1. plate valve, comprise valve body, flashboard, valve gap and valve rod, described valve body is provided with valve body import and valve outlet, described flashboard is connected to the lower end of described valve rod with described valve body import and valve outlet isolation, described valve rod upper end passes from the center hole of described valve gap and between the two by packing seal, described flashboard both sides are respectively equipped with valve seat, described valve seat is flush-mounted in respectively in the valve support chamber of described valve body and valve seat surface is embedded with respectively the teflon seat ring on the end face of flashboard, described teflon seat ring is pressed on respectively on the described flashboard, it is characterized in that: described valve seat and described valve support chamber bellows and spring be installed between the end face in opposite directions, described bellows and described valve body import and valve outlet coaxial line, described spring is evenly distributed on the periphery of described bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220317579 CN202674355U (en) | 2012-07-03 | 2012-07-03 | Flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220317579 CN202674355U (en) | 2012-07-03 | 2012-07-03 | Flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202674355U true CN202674355U (en) | 2013-01-16 |
Family
ID=47495261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220317579 Expired - Fee Related CN202674355U (en) | 2012-07-03 | 2012-07-03 | Flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202674355U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101009A (en) * | 2017-04-14 | 2017-08-29 | 广州市极合技术咨询有限公司 | A kind of flat gate valve with fire resisting function |
| CN108612858A (en) * | 2018-07-14 | 2018-10-02 | 克拉玛依市圣起钻采设备有限责任公司 | A kind of blind rod type Full metal sealing valve and its implementation |
-
2012
- 2012-07-03 CN CN 201220317579 patent/CN202674355U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101009A (en) * | 2017-04-14 | 2017-08-29 | 广州市极合技术咨询有限公司 | A kind of flat gate valve with fire resisting function |
| CN107101009B (en) * | 2017-04-14 | 2019-04-23 | 浙江摩恩达阀门有限公司 | A kind of flat gate valve with fire resisting function |
| CN108612858A (en) * | 2018-07-14 | 2018-10-02 | 克拉玛依市圣起钻采设备有限责任公司 | A kind of blind rod type Full metal sealing valve and its implementation |
| CN108612858B (en) * | 2018-07-14 | 2023-09-12 | 克拉玛依市圣起钻采设备有限责任公司 | Concealed rod type all-metal sealing valve and implementation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202674355U (en) | Flat gate valve | |
| CN104089041A (en) | Valve combined type sealing structure and method thereof | |
| CN202583046U (en) | Test device for friction force of elastic sealing ring | |
| CN206409662U (en) | A kind of liquefied natural gas ball-valve dedicated | |
| CN202493692U (en) | Dual-plate dual-seat two-way elastic metal hard seal butterfly valve | |
| CN202188132U (en) | Elastic O-shaped sealing ring for mechanical seal | |
| CN204628783U (en) | The low leakage stuffing box structure of a kind of sand-proof type dynamic compensation | |
| CN202790658U (en) | Valve seat of fixed ball valve | |
| CN202402681U (en) | High temperature and high pressure ball valve | |
| CN203948678U (en) | The box-like sealing configuration of a kind of valve sets | |
| CN204852428U (en) | Titanium material ball valve sealed firmly | |
| CN203098936U (en) | Spring compensation type low-temperature floating ball valve | |
| CN202629104U (en) | High-temperature seal butterfly valve | |
| CN202158209U (en) | Floating-seat two-way hard sealed butterfly valve | |
| CN203258240U (en) | Tooth-shaped flange sealing gasket | |
| CN208331271U (en) | Two-way hard seal butterfly valve | |
| CN101699106B (en) | Cut-off control valve | |
| CN205244422U (en) | Bi -directional sealing high -performance butterfly valve | |
| CN103115164A (en) | Spring compensated type low temperature floating ball valve | |
| CN204571925U (en) | Novel thermal recovery well head high-temperature expansion formula flap type | |
| CN206017810U (en) | A kind of Full floating bulkhead gate | |
| CN204610847U (en) | The bidirectional balanced ring assembly of telescoping valve | |
| CN204267851U (en) | A kind of packing of gate valve structure | |
| CN204328045U (en) | A kind of wafer type clay pneumatic ball valve | |
| CN204114215U (en) | Piston type valve seat sealing ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU YIFA GROUP CO., LTD. Free format text: FORMER NAME: ZHENJIANG CASTING VALVE PLANT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Yangzhong City, Jiangsu province Zhenjiang City West 212221 town Gangbei Road No. 34 Patentee after: JIANGSU EVALVE GROUP CO., LTD. Address before: Yangzhong City, Jiangsu province Zhenjiang City West 212221 town Gangbei Road No. 34 Patentee before: Zhenjiang Casting Valve Factory Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20150703 |
|
| EXPY | Termination of patent right or utility model |