CN104500772A - Water-sealed gas shut-off valve with double dampers parallel - Google Patents
Water-sealed gas shut-off valve with double dampers parallel Download PDFInfo
- Publication number
- CN104500772A CN104500772A CN201410689451.0A CN201410689451A CN104500772A CN 104500772 A CN104500772 A CN 104500772A CN 201410689451 A CN201410689451 A CN 201410689451A CN 104500772 A CN104500772 A CN 104500772A
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- Prior art keywords
- valve
- valve body
- outlet
- water
- flashboard
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/029—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with two or more gates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0227—Packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
- F16K3/18—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/316—Guiding of the slide
- F16K3/3165—Guiding of the slide with rollers or balls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a water-sealed gas shut-off valve with double dampers parallel. The water-sealed gas shut-off valve comprises a body comprising an inlet segment, a middle segment and an outlet segment. An upper opening is formed in the top of the middle segment, and a lower opening is formed in the bottom of the middle segment. A sewage groove is formed in the bottom of the middle segment and provided with a drain outlet. A drain valve is formed at the drain outlet. The top of the middle segment is connected with a valve cover which is provided with a water inlet and an air exhaust opening. A valve rod is arranged in the valve cover. A square sleeve is arranged at the bottom of the valve rod. The double dampers symmetrically hang on the square sleeve. As the valve rod moves downwards, an outlet of the inlet segment and an inlet of the outlet segment are sealed by the dampers respectively, and the dampers are driven by an expanding mechanism to be closely attached to the end surface of the outlet of the inlet segment and the end surface of the inlet of the outlet segment, thus the body, the dampers and the sewage groove are combined to form a sealing valve chamber, and water is injected in the sealing valve chamber through the inlet of the valve cover, forming water-seal shut-off. The water-sealed gas shut-off valve is good in sealing effect.
Description
Technical field
The present invention relates to the water seal double disc parallel seat gas cut off valve for gas pipeline.
Background technique
The structure of the gas cut off valve for opening or cut off gas pipeline used at present is comprise the inducer valve body by being interconnected successively, the shut-off valve body of intermediate section valve body and outlet section valve body composition, upper shed is offered at the top of intermediate section valve body, valve gap is connected with at the top of intermediate section valve body, valve rod is provided with in valve gap, valve rod moves vertically under the drive of motor in valve gap, a shoe brake plate is fixed with in the bottom of valve rod, when valve rod moves down, valve rod can drive flashboard to insert intermediate section valve body from the upper shed of intermediate section valve body, and make flashboard seal the valve outlet of inducer valve body and the valve body import of outlet section valve body simultaneously.The shortcoming of above-mentioned gas cut off valve is: not only sealing effect is bad, and the foreign material that very easily deposit in shut-off valve body, thus flashboard can not be closed tight, foreign material alluvial in the poor and valve body of sealing effect and make the situations such as flashboard fits badly all easily cause gas leakage, the safety in utilization of product is low.
Summary of the invention
The object of this invention is to provide a kind of water seal double disc parallel seat gas cut off valve of good sealing effect.
For achieving the above object, present invention employs following technological scheme: described water seal double disc parallel seat gas cut off valve, comprise by inducer valve body, the shut-off valve body of intermediate section valve body and outlet section valve body composition, upper shed is offered at the top of intermediate section valve body, bottom offers under shed, the sealed bottom of intermediate section valve body is connected with dump tank, intermediate section valve body is connected with dump tank by under shed, the sidewall of dump tank offers drain opening, drain opening place is provided with the drain valve of energy opening and closing drain opening, valve gap is connected with at the top seal of intermediate section valve body, intermediate section valve body is connected with valve gap by upper shed, the sidewall of valve gap offers water intake and relief opening, valve rod is provided with in valve gap, valve rod moves vertically under the drive of driving mechanism in valve gap, four square sets are fixed with in the bottom of valve rod, on the cover of four directions, symmetrical interval is hung with a pair flashboard, when valve rod moves down, this can be synchronously driven to insert shut-off valve body to flashboard from the upper shed of intermediate section valve body, and make two shoe brake plates just in time seal the valve outlet of inducer valve body and the valve body import of outlet section valve body respectively, two shoe brake plates can be affixed tightening seal with the valve outlet end face of inducer valve body and the valve body inlet end face of outlet section valve body respectively under the drive of Fastening mechanism, make valve gap, two shoe brake plates and dump tank form sealing valve pocket jointly, and in sealing valve pocket, fill water by the water intake of valve gap and form water seal cut-out.
Further, aforesaid water seal double disc parallel seat gas cut off valve, wherein: the structure of described Fastening mechanism is: on the relative inner wall of two shoe brake plates, be symmetrically arranged with two to the block that rises, the often pair of block that rises is symmetrical to be respectively hinged on the relative inner wall of two shoe brake plates, dump tank base plate immediately below the often pair of block that rises is respectively arranged with one piece of top wedge, while valve rod drives two shoe brake plates to seal the valve outlet of inducer valve body and the valve body import of outlet section valve body downwards, the lower end of the often pair of block that rises can outwards be opened along the wedge surface, top of below correspondence respectively gradually, the corresponding flashboard of synchronous drive outwards opens, make two shoe brake plates can respectively with the valve outlet end face of inducer valve body, the valve body inlet end face of outlet section valve body is affixed tightening seal.
Further, aforesaid water seal double disc parallel seat gas cut off valve, wherein: be respectively arranged with vertical lines guide rail in the both sides of intermediate section valve body, between two shoe brake plates, expansion bearing has the roller that can match with vertical lines guide rail for a pair, and two shoe brake plates are moved along vertical lines guide rail vertically by roller.
Further, aforesaid water seal double disc parallel seat gas cut off valve, wherein: described driving mechanism is made up of bevel-gear sett and reducing motor.
Further, aforesaid water seal double disc parallel seat gas cut off valve, wherein: on the sidewall of dump tank, also offer ash removing opening, ash removing opening is by dismountable side cover involution.
Further, aforesaid water seal double disc parallel seat gas cut off valve, wherein: the inlet valve being provided with energy opening and closing water intake in the water inlet of valve gap.
Further, aforesaid water seal double disc parallel seat gas cut off valve, wherein: the outlet valve being provided with energy opening and closing relief opening in the exhaust ports of valve gap.
By the enforcement of technique scheme, the beneficial effect that the present invention has is: good sealing effect, the situation that flashboard is fitted badly because foreign material alluvial in valve body can not occur, and product is safe to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of water seal double disc parallel seat gas cut off valve of the present invention.
Fig. 2 is the structural representation of A-A section in Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As Fig. 1, shown in Fig. 2, described water seal double disc parallel seat gas cut off valve, comprise by the inducer valve body 1 be interconnected, the shut-off valve body that intermediate section valve body 2 and outlet section valve body 3 form, upper shed is offered at the top of intermediate section valve body 2, bottom offers under shed, valve gap 4 is connected with at the top seal of intermediate section valve body 2, intermediate section valve body 2 is connected with valve gap 4 by upper shed, dump tank 5 is connected with at the sealed bottom of intermediate section valve body 2, intermediate section valve body 2 is connected with dump tank 5 by under shed, drain opening is offered at the sidewall of dump tank 5, drain opening place is provided with the drain valve 6 of energy opening and closing drain opening, , the sidewall of valve gap 4 offers water intake and relief opening, valve rod 7 is provided with in valve gap 4, valve rod 7 moves vertically under the drive of driving mechanism in valve gap 4, four square sets 8 are fixed with in the bottom of valve rod 7, in four square sets 8, symmetrical interval is hung with the first flashboard 9 and the second flashboard 10, this flashboard mounting type easy accessibility, when valve rod 7 moves down, the first flashboard 9 and the second flashboard 10 can be synchronously driven to insert shut-off valve body from the upper shed of intermediate section valve body 2, and make the first flashboard 9 and the second flashboard 10 just in time seal the valve outlet of inducer valve body 1 and the valve body import of outlet section valve body 3 respectively, first flashboard 9 outwards can open and be affixed tightening seal with the valve outlet end face of inducer valve body 1 respectively under the drive of Fastening mechanism, second flashboard 10 outwards can open and be affixed tightening seal with the valve body inlet end face of outlet section valve body 3 respectively under the drive of Fastening mechanism, make valve gap 4, first flashboard 9, second flashboard 10 and dump tank 5 form sealing valve pocket jointly, and in sealing valve pocket, fill water formation water seal cut-out by the water intake of valve gap 4, in the present embodiment, the structure of described Fastening mechanism is: on the relative inner wall of the first flashboard 9 and the second flashboard 10, be symmetrically arranged with two to the block that rises, often pair of first in the block that the rises block 11 that rises is hinged on the madial wall of the first flashboard 9, often pair of second in the block that the rises block 12 that rises is hinged on the madial wall of the second flashboard 10, often pair of first in the block that rises block 11 and second block 12 that rises that rises is symmetric, the base plate of the dump tank 5 immediately below rising by block at often pair is respectively arranged with one piece of top wedge 13, while valve rod 7 drives the first flashboard 9 and the second flashboard 10 seals the valve outlet of inducer valve body 1 and the valve body import of outlet section valve body 3 downwards respectively, the rise lower end of block 11 of often pair of first in the block that rises outwards can be opened gradually along top wedge 13 surface of below correspondence, first flashboard 9 outwards opens by all first block 11 that rises together, the first flashboard 9 is made to be affixed tightening seal with the valve outlet end face of inducer valve body 1, the rise lower end of block 12 of often pair of second in the block that rises outwards can be opened gradually along top wedge 13 surface of below correspondence, second flashboard 10 outwards opens by all second block 12 that rises together, the second flashboard 10 is made to be affixed tightening seal with the valve body inlet end face of outlet section valve body 3, this Fastening mechanism structure is simple, installation and maintenance are convenient, in the present embodiment, vertical lines guide rail 14 is respectively arranged with in the both sides of intermediate section valve body 2, between the first flashboard 9 with the second flashboard 10, expansion bearing has the roller 15 that can match with vertical lines guide rail 14 for a pair, first flashboard 9 and the second flashboard 10 are moved along vertical lines guide rail 14 vertically by roller 15, can make like this first flashboard 9 and the second flashboard 10 more stable when moving up and down, in the present embodiment, described driving mechanism is made up of bevel-gear sett and reducing motor, and above-mentioned driving mechanism structure is simple, and installation and maintenance are convenient, in the present embodiment, the sidewall of dump tank 5 also offers ash removing opening, ash removing opening is by dismountable side cover 16 involution, like this when alluvial in dump tank 5 has foreign material, side cover 16 can be opened, then foreign material are cleaned out from ash removing opening, structure is simple, and installation and maintenance are convenient, in the present embodiment, be provided with the inlet valve 17 of energy opening and closing water intake in the water inlet of valve gap 4, in the present embodiment, be provided with the outlet valve 18 of energy opening and closing relief opening in the exhaust ports of valve gap 4,
Working principle of the present invention is as follows:
After the inducer valve body 1 of gas cut off valve and outlet section valve body 3 connect gas pipeline respectively, when needs cut off gas pipeline, moved down by reducing motor and bevel-gear sett band ovable valve stem 7, valve rod 7 synchronously drives the first flashboard 9 and the second flashboard 10 to move down by four square sets 8, when valve rod 7 drives the first flashboard 9 and the second flashboard 10 to move down the valve body import of valve outlet and the outlet section valve body 3 sealing inducer valve body 1 respectively, on first flashboard 9 madial wall first rises, and top wedge 13 that block corrects along below correspondence for 11 times outwardly opens, thus synchronously the first flashboard 9 is outwards opened, the first flashboard 9 is made to be affixed tightening seal with the valve outlet end face of inducer valve body 1, the second lower end of rising by block 12 simultaneously on the second flashboard 10 madial wall is also just in time outwardly opened along the top wedge 13 of below correspondence, also synchronous second flashboard 10 outwards to be opened, the second flashboard 10 is made to be affixed tightening seal with the valve body inlet end face of outlet section valve body 3, make valve gap 4, first flashboard 9, second flashboard 10 and dump tank 5 form sealing valve pocket jointly, then drain valve 6 is closed, and open inlet valve 17 and outlet valve 18 simultaneously, then water is injected sealing valve pocket from the water intake of valve gap 4, the process of sealing valve pocket is injected at water, air in sealing valve pocket can be discharged from the relief opening of valve gap 4, until after filling water in sealing valve pocket, stop continuing to inject water in sealing valve pocket, and close inlet valve 17 and outlet valve 18, now, namely the sealing valve pocket filling water defines water seal to gas pipeline and cuts off, like this when there being a small amount of combustion gas through flashboard in gas pipeline, combustion gas through flashboard can be intercepted further by water seal, thus substantially increase the sealing of cut-off valve, and the impurity entered in the combustion gas of water seal can be deposited on dump tank 5 downwards, such impurity would not result in blockage to shut-off valve body, and the situation that flashboard fits badly because of shut-off valve body blocking can not occur, when needs are communicated with gas pipeline, first open drain valve 6, water in sealing valve pocket is drained only, then is moved up by reducing motor and bevel-gear sett band ovable valve stem 7, until valve rod 7 synchronously drives the first flashboard 9 and the second flashboard 10 to be moved upward to initial position by four square sets 8, when the Impurity deposition in dump tank 5 is too much, side cover 16 can be disassembled, then impurity is cleared up away from ash removing opening, by aforesaid operations, namely complete gas cut off valve to the cut-out of gas pipeline and opening operation, the advantage that the present invention has is: good sealing effect, the situation that flashboard is fitted badly because foreign material alluvial in shut-off valve body can not occur, and product is safe to use.
Claims (7)
1. water seal double disc parallel seat gas cut off valve, comprise by inducer valve body, the shut-off valve body of intermediate section valve body and outlet section valve body composition, it is characterized in that: offer upper shed at the top of intermediate section valve body, bottom offers under shed, the sealed bottom of intermediate section valve body is connected with dump tank, intermediate section valve body is connected with dump tank by under shed, the sidewall of dump tank offers drain opening, drain opening place is provided with the drain valve of energy opening and closing drain opening, valve gap is connected with at the top seal of intermediate section valve body, intermediate section valve body is connected with valve gap by upper shed, the sidewall of valve gap offers water intake and relief opening, valve rod is provided with in valve gap, valve rod moves vertically under the drive of driving mechanism in valve gap, four square sets are fixed with in the bottom of valve rod, on the cover of four directions, symmetrical interval is hung with a pair flashboard, when valve rod moves down, this can be synchronously driven to insert shut-off valve body to flashboard from the upper shed of intermediate section valve body, and make two shoe brake plates just in time seal the valve outlet of inducer valve body and the valve body import of outlet section valve body respectively, two shoe brake plates can be affixed tightening seal with the valve outlet end face of inducer valve body and the valve body inlet end face of outlet section valve body respectively under the drive of Fastening mechanism, make valve gap, two shoe brake plates and dump tank form sealing valve pocket jointly, and in sealing valve pocket, fill water by the water intake of valve gap and form water seal cut-out.
2. water seal double disc parallel seat gas cut off valve according to claim 1, it is characterized in that: the structure of described Fastening mechanism is: on the relative inner wall of two shoe brake plates, be symmetrically arranged with two to the block that rises, the often pair of block that rises is symmetrical to be respectively hinged on the relative inner wall of two shoe brake plates, dump tank base plate immediately below the often pair of block that rises is respectively arranged with one piece of top wedge, while valve rod drives two shoe brake plates to seal the valve outlet of inducer valve body and the valve body import of outlet section valve body downwards, the lower end of the often pair of block that rises can outwards be opened along the wedge surface, top of below correspondence respectively gradually, the corresponding flashboard of synchronous drive outwards opens, make two shoe brake plates can respectively with the valve outlet end face of inducer valve body, the valve body inlet end face of outlet section valve body is affixed tightening seal.
3. water seal double disc parallel seat gas cut off valve according to claim 1, it is characterized in that: be respectively arranged with vertical lines guide rail in the both sides of intermediate section valve body, between two shoe brake plates, expansion bearing has the roller that can match with vertical lines guide rail for a pair, and two shoe brake plates are moved along vertical lines guide rail vertically by roller.
4. water seal double disc parallel seat gas cut off valve according to claim 1, is characterized in that: described driving mechanism is made up of bevel-gear sett and reducing motor.
5. water seal double disc parallel seat gas cut off valve according to claim 1, is characterized in that: on the sidewall of dump tank, also offer ash removing opening, and ash removing opening is by dismountable side cover involution.
6. water seal double disc parallel seat gas cut off valve according to claim 1, is characterized in that: the inlet valve being provided with energy opening and closing water intake in the water inlet of valve gap.
7. water seal double disc parallel seat gas cut off valve according to claim 1, is characterized in that: the outlet valve being provided with energy opening and closing relief opening in the exhaust ports of valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410689451.0A CN104500772A (en) | 2014-11-26 | 2014-11-26 | Water-sealed gas shut-off valve with double dampers parallel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410689451.0A CN104500772A (en) | 2014-11-26 | 2014-11-26 | Water-sealed gas shut-off valve with double dampers parallel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104500772A true CN104500772A (en) | 2015-04-08 |
Family
ID=52942204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410689451.0A Pending CN104500772A (en) | 2014-11-26 | 2014-11-26 | Water-sealed gas shut-off valve with double dampers parallel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104500772A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806776A (en) * | 2015-05-12 | 2015-07-29 | 江苏五星波纹管有限公司 | Double-inserting plate type blocking door |
| CN108506505A (en) * | 2018-05-15 | 2018-09-07 | 江苏苏亚迪炭材有限公司 | The double-deck flue sealing damper door |
| CN108757973A (en) * | 2018-08-16 | 2018-11-06 | 北京航天石化技术装备工程有限公司 | A kind of double-flashboard gate valve |
| CN109681655A (en) * | 2019-01-22 | 2019-04-26 | 广州市沙唯士电子科技有限公司 | A kind of gate valve of the good seal performance for natural gas line |
| CN111120672A (en) * | 2020-01-21 | 2020-05-08 | 石家庄耐斯特机械阀业有限公司 | Special valve for under-pressure hole opening |
| CN111981149A (en) * | 2020-08-26 | 2020-11-24 | 立信阀门集团有限公司 | Knife-shaped gate valve |
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| CN201166126Y (en) * | 2008-03-14 | 2008-12-17 | 严胜春 | Water seal butterfly valve |
| CN201166135Y (en) * | 2008-03-14 | 2008-12-17 | 严胜春 | Water sealing parallel type double gate valve |
| CN201310642Y (en) * | 2008-12-08 | 2009-09-16 | 郑州阀门厂 | Water sealing gas valve |
| GB2507799A (en) * | 2012-11-09 | 2014-05-14 | Process Components Ltd | Gate valve |
| US20140261737A1 (en) * | 2013-03-15 | 2014-09-18 | Mueller International, Llc | Gate valve with track cleanout |
| CN204372211U (en) * | 2014-11-26 | 2015-06-03 | 江苏省鑫通阀门制造有限公司 | Water seal double disc parallel seat gas cut off valve |
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2014
- 2014-11-26 CN CN201410689451.0A patent/CN104500772A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201166126Y (en) * | 2008-03-14 | 2008-12-17 | 严胜春 | Water seal butterfly valve |
| CN201166135Y (en) * | 2008-03-14 | 2008-12-17 | 严胜春 | Water sealing parallel type double gate valve |
| CN201310642Y (en) * | 2008-12-08 | 2009-09-16 | 郑州阀门厂 | Water sealing gas valve |
| GB2507799A (en) * | 2012-11-09 | 2014-05-14 | Process Components Ltd | Gate valve |
| US20140261737A1 (en) * | 2013-03-15 | 2014-09-18 | Mueller International, Llc | Gate valve with track cleanout |
| CN204372211U (en) * | 2014-11-26 | 2015-06-03 | 江苏省鑫通阀门制造有限公司 | Water seal double disc parallel seat gas cut off valve |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806776A (en) * | 2015-05-12 | 2015-07-29 | 江苏五星波纹管有限公司 | Double-inserting plate type blocking door |
| CN108506505A (en) * | 2018-05-15 | 2018-09-07 | 江苏苏亚迪炭材有限公司 | The double-deck flue sealing damper door |
| CN108506505B (en) * | 2018-05-15 | 2023-11-14 | 江苏苏亚迪炭材有限公司 | Double-layer flue sealing flashboard door |
| CN108757973A (en) * | 2018-08-16 | 2018-11-06 | 北京航天石化技术装备工程有限公司 | A kind of double-flashboard gate valve |
| CN108757973B (en) * | 2018-08-16 | 2023-11-14 | 北京航天石化技术装备工程有限公司 | Double-flashboard gate valve |
| CN109681655A (en) * | 2019-01-22 | 2019-04-26 | 广州市沙唯士电子科技有限公司 | A kind of gate valve of the good seal performance for natural gas line |
| CN111120672A (en) * | 2020-01-21 | 2020-05-08 | 石家庄耐斯特机械阀业有限公司 | Special valve for under-pressure hole opening |
| CN111981149A (en) * | 2020-08-26 | 2020-11-24 | 立信阀门集团有限公司 | Knife-shaped gate valve |
| CN111981149B (en) * | 2020-08-26 | 2021-12-24 | 立信阀门集团有限公司 | Knife-shaped gate valve |
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Application publication date: 20150408 |