CN115405712A - Rectangular vacuum quick cut-off valve - Google Patents
Rectangular vacuum quick cut-off valve Download PDFInfo
- Publication number
- CN115405712A CN115405712A CN202211035831.3A CN202211035831A CN115405712A CN 115405712 A CN115405712 A CN 115405712A CN 202211035831 A CN202211035831 A CN 202211035831A CN 115405712 A CN115405712 A CN 115405712A
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- Prior art keywords
- flashboard
- valve
- valve body
- guide
- rectangular
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- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 230000000694 effects Effects 0.000 abstract description 5
- 230000005484 gravity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- F16K3/16—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
- F16K3/182—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 by means of toggle links
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating 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
- F16K3/02—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
- F16K3/029—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
-
- 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
-
- 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
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
-
- 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
-
- 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)
- Sliding Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a rectangular vacuum quick cut-off valve which comprises a driving device, a valve cover, a valve body, a flashboard, a connecting rod, a sealing ring, a sealing pressing plate, a flashboard supporting frame and a limit stop block, wherein the flashboard, the connecting rod, the sealing ring, the sealing pressing plate, the flashboard supporting frame and the limit stop block are arranged in the valve body, the valve cover is arranged at two ends of the valve body, the driving device is installed on the valve cover at the upper part of the valve body, the driving end of the driving device is connected with the flashboard supporting frame, the flashboard comprises a first flashboard and a second flashboard, the upper end and the lower end of the first flashboard and the upper end and the lower end of the second flashboard are hinged with the end part of the connecting rod, the connecting rod is hinged in the flashboard supporting frame, the sealing ring is arranged on one side, close to the valve body, of the first flashboard and the second flashboard, the sealing ring is fixed through the sealing pressing plate, and a guide mechanism is arranged between the flashboard supporting frame and the valve body. The rectangular vacuum quick cut-off valve is a rectangular flow channel, is reliable in sealing, good in flow guide effect and quick in response.
Description
Technical Field
The invention belongs to the field of vacuum valves, and particularly relates to a rectangular vacuum quick cut-off valve.
Background
A vacuum valve is a component of a vacuum system that regulates the flow of gas and cuts or opens a line. Most vacuum valves are mainly circular in conduction, and for the working condition of a vacuum system needing a rectangular flow channel, the circular in conduction valve cannot meet the use requirement. Meanwhile, when a plurality of vacuum valves are in a sealing position, the sealing can be kept only by means of external holding force, and once the external holding force is lost, the sealing is not tight, so that leakage is generated. And the vacuum valves are mainly single-seal, and the sealing reliability is inferior to double-seal. The valve body inner chamber is often bigger than the pipeline runner when the vacuum valve is in the open mode, and the pipeline air current can produce the vortex in valve body inner chamber department when flowing through the vacuum valve, will disturb the original flowing state of air current like this, can not satisfy the user demand to the operating mode that requires pipeline gas steady flow. The traditional driving device of the vacuum valve is usually long in valve opening and closing time, and cannot meet the special working condition use requirement of quickly cutting off a flow channel in a short time.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the rectangular vacuum quick cut-off valve which is a rectangular flow channel, is reliable in sealing, good in flow guide effect and quick in response.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a quick trip valve in rectangle vacuum, flashboard, connecting rod, sealing washer, sealing pressure plate, flashboard support frame, limit stop in including drive arrangement, valve gap, valve body and valve body, the valve body both ends are equipped with the valve gap, drive arrangement installs on the valve gap on valve body upper portion, drive arrangement's drive end is connected with the flashboard support frame, the flashboard includes first flashboard and second flashboard, the upper and lower both ends of first flashboard and second flashboard all are articulated with the tip of connecting rod, the connecting rod articulates in the flashboard support frame, the one side that first flashboard and second flashboard are close to the valve body all is equipped with the sealing washer, the sealing washer is fixed through sealing pressure plate, be equipped with guiding mechanism between aforementioned flashboard support frame and the valve body, both sides are equipped with valve body limit stop in the valve body, wherein be equipped with valve body limit stop complex limit valve plate limit stop on the second flashboard.
In the technical scheme, the guide mechanism comprises a guide support, a guide rod and a ball bearing, the guide support is fixed in the valve body, two ends of the guide rod are vertically fixed on the gate plate support frame through bolts, and the guide rod penetrates through the ball bearing on the guide support to form a linear guide rail pair.
In the above technical scheme, the lower end of the flashboard support frame is connected with a rectangular air guide sleeve.
In the technical scheme, an extension spring is arranged between the first flashboard and the second flashboard, one end of the stay cord spring is connected with the side face of the first flashboard, and the other end of the stay cord spring is connected with the corresponding side face of the second flashboard.
In the above technical scheme, extension spring is equipped with two sets or multiunit, and the both sides of first flashboard and second curb plate all are equipped with extension spring.
In the above technical scheme, the second flashboard has a larger mass than the first flashboard.
In the above technical scheme, the driving device is an electric cylinder, the valve cover is provided with an electric cylinder connecting seat, and the valve cover is connected with the electric cylinder through a bolt.
The invention has the beneficial effects that: the rectangular vacuum quick cut-off valve is a rectangular flow channel, the size of the valve flow channel is consistent with that of a pipeline when the rectangular vacuum quick cut-off valve is opened, a small step difference exists between the valve flow channel and the pipeline flow channel, and airflow cannot enter a cavity of a valve body when flowing through the valve, so that the stability of the airflow is ensured; this quick trip valve in rectangle vacuum not only can rely on the dead weight of flashboard to realize double seal through lever principle under the condition that loses drive arrangement helping hand, but also can open fast in 5s and cut off the runner through electronic jar drive flashboard.
Drawings
FIG. 1 is a schematic view of the present invention.
Fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.
Fig. 3 is an enlarged view of I in fig. 2.
Fig. 4 is a sectional view taken along line B-B of fig. 2.
Figure 5 is a cross-sectional view of C-C of figure 4.
Wherein: 1. the hydraulic cylinder comprises a valve body, 2 electric cylinders, 3 valve covers, 4 first gate plates, 5 second gate plates, 6 sealing rings, 7 sealing pressing plates, 8 connecting rods, 9 gate plate supporting frames, 10 gate plate limiting stop blocks, 11 extension springs, 12 valve body limiting stop blocks, 13 guide support seats, 14 ball bearings, 15 guide rods and 16 rectangular guide covers.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
As shown in fig. 1, fig. 2 and fig. 3, the rectangular vacuum quick cut-off valve comprises a driving device, a valve cover 3, a valve plate, a connecting rod 8, a sealing ring 6, a sealing pressing plate 7, a valve plate supporting frame 9 and limit stops in the valve body 1 and the valve body 1, wherein the valve cover 3 is arranged at two ends of the valve body 1, the driving device is installed on the valve cover on the upper portion of the valve body 1, the driving end of the driving device is connected with the valve plate supporting frame 9 through threads, the valve plate comprises a first valve plate 4 and a second valve plate 5, the upper end and the lower end of the first valve plate 4 and the upper end and the lower end of the second valve plate 5 are both hinged to the end of the connecting rod 8, the connecting rod 8 is hinged to the valve plate supporting frame 9, the sealing ring 6 is arranged on one side of the first valve plate 4 and the second valve plate 5 close to the valve body 1, the sealing ring 6 is fixed through the sealing pressing plate 7, a guiding mechanism is arranged between the valve plate supporting frame 9 and the valve body 1, valve body limit stops 12 are arranged on two sides in the valve body 1, and a limit stop 10 matched with the valve body limit stop 12 is arranged on the second valve body 5.
In the above technical scheme, the guide mechanism includes guide support 13, guide bar 15 and ball bearing 14, guide support 23 is fixed in valve body 2, and the vertical fixing on flashboard support frame 9 of bolt is passed through at guide bar 15 both ends, and guide bar 15 wears to form the linear guide pair in the ball bearing 14 on guide support 13.
In the above technical solution, the lower end of the shutter support frame 9 is connected with a rectangular air guide sleeve 16.
In the above technical solution, an extension spring 11 is arranged between the first gate plate 4 and the second gate plate 5, one end of the extension spring 11 is connected with a side surface of the first gate plate 4, and the other end is connected with a corresponding side surface of the second gate plate 5.
In the above technical scheme, extension spring 11 is equipped with two sets or multiunit, and the both sides of first flashboard 4 and second curb plate 5 all are equipped with extension spring.
In the above technical solution, the second shutter plate 5 has a larger mass than the first shutter plate 4.
In the above technical scheme, drive arrangement is electronic jar 2, is equipped with electronic jar connecting seat on the valve gap, and both pass through bolted connection with electronic jar.
And (3) closing process: first flashboard 4 and second flashboard 5 are upper and lower both sides articulated with the hole at 8 both ends of connecting rod respectively, 8 intermediate holes of connecting rod are articulated with flashboard support frame 9, first flashboard 4 and second flashboard 5 like this, connecting rod 8, a lever mechanism has just been constituteed to flashboard support frame 9, first flashboard 4 and second flashboard 5 equal to the arm of force length of fulcrum, second flashboard 5 weight is slightly heavier than first flashboard 4, the lever loses balance under the effect of gravity and 11 pulling springs's pulling forces, two flashboards are laminated back to back. The gate plate support frame 9 moves linearly in the inner cavity of the valve body 1 along the guide rod 15 under the action of the driving force of the electric cylinder 2. Before the gate plate limit stop 10 contacts the valve body limit stop 12 in the downward valve closing process of the gate plate, a gap of 3mm is formed between the gate plate sealing ring 6 and the valve body sealing seat, so that the valve body sealing seat is prevented from being damaged by the gate plate sealing ring 6 in the rapid valve closing process. When flashboard limit stop 10 on the second flashboard 5 contacts valve body limit stop 12, electronic jar 2 propulsion speed slows down, and two flashboards are laminated to the sealed face of valve body under the effect of lever, and the horizontal positive pressure that produces under the effect of flashboard gravity and electronic jar 2 thrust lets the valve reach sealedly. The structure can keep vacuum sealing under the gravity action of the first flashboard 4 and the second flashboard 5 after the system is powered off.
The starting process comprises the following steps: when the valve is opened, the gravity of the first flashboard 4 and the second flashboard 5 of flashboard is firstly overcome under the action of the pulling force of the electric cylinder 2, the friction force of the sealing surfaces of the first flashboard 4 and the second flashboard 5 and the valve body is generated, then the flashboard limit stop 10 on the second flashboard 5 begins to separate from the valve body limit stop 12, the first flashboard 4 and the second flashboard 5 rapidly reset back to back under the action of the pulling force of the tension spring 11 and the unbalanced force of the dead weight lever, and the flashboard sealing ring 6 and the valve seat sealing surface are separated and keep a 3mm gap. The first gate plate 4, the second gate plate 5 and the rectangular air guide sleeve 16 are linearly moved along the guide rod 15 in the inner cavity of the valve body under the action of the pulling force of the electric cylinder 2 to quickly open the valve in place, and the rectangular air guide sleeve 16 is communicated with an inlet and an outlet flow passage of the valve body to prevent a medium from flowing into the inner cavity of the valve body to stabilize the flow state of the medium.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (7)
1. The utility model provides a quick trip valve of rectangle vacuum which characterized by: including drive arrangement, valve gap, flashboard, connecting rod, sealing washer, sealed clamp plate, flashboard support frame, limit stop in valve body and the valve body, the valve body both ends are equipped with the valve gap, drive arrangement installs on the valve gap on valve body upper portion, drive arrangement's drive end is connected with the flashboard support frame, the flashboard includes first flashboard and second flashboard, the upper and lower both ends of first flashboard and second flashboard all are articulated with the tip of connecting rod, the connecting rod articulates in the flashboard support frame, the one side that first flashboard and second flashboard are close to the valve body all is equipped with the sealing washer, the sealing washer is fixed through sealed clamp plate, be equipped with guiding mechanism between aforementioned flashboard support frame and the valve body, both sides are equipped with valve body limit stop in the valve body, and be equipped with valve body limit stop complex limit valve plate on the second flashboard.
2. The rectangular vacuum quick shut-off valve as defined in claim 1, wherein: the guide mechanism comprises a guide support, a guide rod and a ball bearing, the guide support is fixed in the valve body, two ends of the guide rod are vertically fixed on the flashboard support frame through bolts, and the guide rod penetrates through the ball bearing on the guide support to form a linear guide rail pair.
3. The rectangular vacuum quick shut-off valve as defined in claim 1, wherein: the lower end of the flashboard supporting frame is connected with a rectangular air guide sleeve.
4. The rectangular vacuum quick shut-off valve as defined in claim 1, wherein: be equipped with extension spring between first flashboard and the second flashboard, extension spring's one end is connected with the side of first flashboard, and the other end is connected with the corresponding side of second flashboard.
5. The rectangular vacuum quick shut-off valve as defined in claim 1, wherein: extension spring is equipped with two sets ofly or multiunit, and the both sides of first flashboard and second curb plate all are equipped with extension spring.
6. The rectangular vacuum quick shut-off valve as defined in claim 1, wherein: the second shutter is of greater mass than the first shutter.
7. The rectangular vacuum quick shut-off valve as defined in claim 1, wherein: the driving device is an electric cylinder, an electric cylinder connecting seat is arranged on the valve cover, and the valve cover is connected with the electric cylinder through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211035831.3A CN115405712B (en) | 2022-08-26 | 2022-08-26 | Rectangular vacuum quick cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211035831.3A CN115405712B (en) | 2022-08-26 | 2022-08-26 | Rectangular vacuum quick cut-off valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115405712A true CN115405712A (en) | 2022-11-29 |
| CN115405712B CN115405712B (en) | 2023-12-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211035831.3A Active CN115405712B (en) | 2022-08-26 | 2022-08-26 | Rectangular vacuum quick cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115405712B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4491145A (en) * | 1982-08-23 | 1985-01-01 | Johnston Pump/General Valve, Inc. | Toggle gate valve |
| CN2397320Y (en) * | 1999-11-03 | 2000-09-20 | 盐城市苏盐阀门管件厂 | Parallel hinge type double flashboard sluice valve |
| CN2463619Y (en) * | 2001-02-09 | 2001-12-05 | 刘连城 | Horizontal blind plate valve |
| US20030026658A1 (en) * | 2001-08-01 | 2003-02-06 | Chun-Ching Wu | Manual light water gate |
| CN102563112A (en) * | 2011-12-31 | 2012-07-11 | 肇庆市腾胜真空技术工程有限公司 | Vacuum gate valve for vacuum chambers |
| KR20130134627A (en) * | 2012-05-31 | 2013-12-10 | (주)에스더블유피 | Vacuum gate valve |
| CN203477403U (en) * | 2013-09-16 | 2014-03-12 | 常德翔宇设备制造有限公司 | Vacuum pneumatic parallel type single-disc gate valve |
| CN204284503U (en) * | 2014-11-21 | 2015-04-22 | 深圳市捷佳伟创新能源装备股份有限公司 | A kind of high vacuum gate valve |
| CN105351604A (en) * | 2015-11-27 | 2016-02-24 | 四川九天真空科技股份有限公司 | Opening structure and opening method of valve under large pressure difference |
| CN207814479U (en) * | 2017-12-29 | 2018-09-04 | 浙江天特阀门有限公司 | No friction, positive seals water conservancy diversion flap type |
| CN208311506U (en) * | 2018-05-31 | 2019-01-01 | 南通国电电站阀门股份有限公司 | Overcritical small-diameter pneumatic repid cut-off valve |
| CN110220007A (en) * | 2019-06-25 | 2019-09-10 | 山东大学 | A kind of self compensation gate valve and application |
| CN110847127A (en) * | 2019-11-19 | 2020-02-28 | 申志 | Gate device for small hydraulic engineering |
| KR20200101005A (en) * | 2019-02-19 | 2020-08-27 | (주)다산이엔지 | Vacuum Gate Valve |
| CN215059631U (en) * | 2021-03-08 | 2021-12-07 | 芜湖县宏远橡塑制品有限公司 | Single-disk-root double-gate plate structure of gapless gate valve |
| CN218440735U (en) * | 2022-08-26 | 2023-02-03 | 湖北洪城通用机械有限公司 | Rectangular vacuum quick cut-off valve |
-
2022
- 2022-08-26 CN CN202211035831.3A patent/CN115405712B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4491145A (en) * | 1982-08-23 | 1985-01-01 | Johnston Pump/General Valve, Inc. | Toggle gate valve |
| CN2397320Y (en) * | 1999-11-03 | 2000-09-20 | 盐城市苏盐阀门管件厂 | Parallel hinge type double flashboard sluice valve |
| CN2463619Y (en) * | 2001-02-09 | 2001-12-05 | 刘连城 | Horizontal blind plate valve |
| US20030026658A1 (en) * | 2001-08-01 | 2003-02-06 | Chun-Ching Wu | Manual light water gate |
| CN102563112A (en) * | 2011-12-31 | 2012-07-11 | 肇庆市腾胜真空技术工程有限公司 | Vacuum gate valve for vacuum chambers |
| KR20130134627A (en) * | 2012-05-31 | 2013-12-10 | (주)에스더블유피 | Vacuum gate valve |
| CN203477403U (en) * | 2013-09-16 | 2014-03-12 | 常德翔宇设备制造有限公司 | Vacuum pneumatic parallel type single-disc gate valve |
| CN204284503U (en) * | 2014-11-21 | 2015-04-22 | 深圳市捷佳伟创新能源装备股份有限公司 | A kind of high vacuum gate valve |
| CN105351604A (en) * | 2015-11-27 | 2016-02-24 | 四川九天真空科技股份有限公司 | Opening structure and opening method of valve under large pressure difference |
| CN207814479U (en) * | 2017-12-29 | 2018-09-04 | 浙江天特阀门有限公司 | No friction, positive seals water conservancy diversion flap type |
| CN208311506U (en) * | 2018-05-31 | 2019-01-01 | 南通国电电站阀门股份有限公司 | Overcritical small-diameter pneumatic repid cut-off valve |
| KR20200101005A (en) * | 2019-02-19 | 2020-08-27 | (주)다산이엔지 | Vacuum Gate Valve |
| CN110220007A (en) * | 2019-06-25 | 2019-09-10 | 山东大学 | A kind of self compensation gate valve and application |
| CN110847127A (en) * | 2019-11-19 | 2020-02-28 | 申志 | Gate device for small hydraulic engineering |
| CN215059631U (en) * | 2021-03-08 | 2021-12-07 | 芜湖县宏远橡塑制品有限公司 | Single-disk-root double-gate plate structure of gapless gate valve |
| CN218440735U (en) * | 2022-08-26 | 2023-02-03 | 湖北洪城通用机械有限公司 | Rectangular vacuum quick cut-off valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115405712B (en) | 2023-12-12 |
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