CN115405712B - Rectangular vacuum quick cut-off valve - Google Patents
Rectangular vacuum quick cut-off valve Download PDFInfo
- Publication number
- CN115405712B CN115405712B CN202211035831.3A CN202211035831A CN115405712B CN 115405712 B CN115405712 B CN 115405712B CN 202211035831 A CN202211035831 A CN 202211035831A CN 115405712 B CN115405712 B CN 115405712B
- Authority
- CN
- China
- Prior art keywords
- flashboard
- valve
- valve body
- support frame
- sealing
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- 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
-
- 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)
- Lift Valve (AREA)
- Sliding Valves (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 in the valve body, a connecting rod, a sealing ring, a sealing pressing plate, a flashboard support frame and a limit stop block, wherein the valve cover is arranged at two ends of the valve body, the driving device is arranged on the valve cover at the upper part of the valve body, the driving end of the driving device is connected with the flashboard support frame, the flashboard comprises a first flashboard and a second flashboard, the upper end and the lower end of the first flashboard and the lower end of the second flashboard are hinged with the end part of the connecting rod, the connecting rod is hinged into the flashboard support frame, the sealing rings are arranged on one surfaces, close to the valve body, of the first flashboard and the second flashboard, the sealing rings are fixed through the sealing pressing plate, and a guide mechanism is arranged between the flashboard support frame and the valve body. The rectangular vacuum quick cut-off valve is a rectangular flow passage, is reliable in sealing, good in flow guiding 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 an element in a vacuum system that is used to regulate the flow of gas, and to shut off or connect a line. Most of the vacuum valves are mainly round through-guide, and the round through-guide valves can not meet the use requirements for the working conditions of the vacuum system requiring rectangular flow channels. Meanwhile, when many vacuum valves are in a sealing position, the sealing can be kept by means of external holding force, and leakage is caused by loose sealing once the external holding force is lost. And the vacuum valve is mainly single-seal, and the sealing reliability is inferior to that of double-seal. When the vacuum valve is in an open state, the inner cavity of the valve body is often larger than the pipeline runner, and vortex is generated at the inner cavity of the valve body when pipeline airflow flows through the vacuum valve, so that the original flowing state of the airflow is disturbed, and the use requirement cannot be met for the working condition requiring stable flowing of the pipeline airflow. The traditional driving device of the vacuum valve is often long in valve opening and closing time, and the special working condition using requirement of rapidly cutting off the flow passage in a short time can not be met.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the rectangular vacuum quick-cut valve which is a rectangular flow passage, is reliable in sealing, good in flow guiding effect and quick in response.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a quick trip valve of rectangle vacuum, includes flashboard, connecting rod, sealing washer, sealing clamp plate, flashboard support frame, limit stop in drive arrangement, valve gap, valve body and the valve body, the valve gap is equipped with at the valve body both ends, 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 are all 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 passes through sealing clamp plate to be fixed, be equipped with guiding mechanism between aforementioned flashboard support frame and the valve body, be equipped with valve body limit stop in the valve body both sides, wherein be equipped with on the second flashboard with valve body limit stop complex valve plate limit stop.
In the above technical scheme, guiding mechanism includes guide support, guide bar and ball bearing, guide support is fixed in the valve body, and the guide bar both ends pass through the vertical fixing of bolt on flashboard support frame, and the guide bar wears to establish in the ball bearing on guide support to form the linear guide pair.
In the above technical scheme, the lower end of the flashboard support frame is connected with a rectangular air guide sleeve.
In the above 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 surface of the first flashboard, and the other end of the stay cord spring is connected with the corresponding side surface of the second flashboard.
In the above technical scheme, the extension springs are provided with two or more groups, and the two sides of the first flashboard and the second flashboard are respectively provided with an extension spring.
In the above technical scheme, the second flashboard is larger than the first flashboard in mass.
In the technical scheme, 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 bolts.
The beneficial effects of the invention are as follows: the rectangular vacuum quick cut-off valve is a rectangular flow passage, the size of the valve flow passage is consistent with the size of a pipeline when the rectangular vacuum quick cut-off valve is opened, a small step difference exists between the valve flow passage and the pipeline flow passage, and air flow cannot enter a cavity of the valve body when flowing through the valve, so that the stability of the air flow is ensured; the rectangular vacuum quick cut-off valve not only can realize double sealing by the dead weight of the flashboard through the lever principle under the condition that the power of the driving device is lost, but also can quickly open and cut off the flow passage within 5 seconds by driving the flashboard through the electric cylinder.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Figure 2 is a cut-away view of A-A of figure 1.
Fig. 3 is an enlarged view of I in fig. 2.
Fig. 4 is a cut-away view of fig. 2B-B.
Fig. 5 is a cut-away view of fig. 4C-C.
Wherein: 1. valve body, 2, electric cylinder, 3, valve cover, 4, first flashboard, 5, second flashboard, 6, sealing ring, 7, sealing pressing plate, 8, connecting rod, 9, flashboard support frame, 10, flashboard limit stop, 11, extension spring, 12, valve body limit stop, 13, guide support, 14, ball bearing 15, guide rod, 16, rectangular air guide cover.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific examples.
The rectangular vacuum quick cut-off valve comprises a driving device, a valve cover 3, a valve body 1, a flashboard in the valve body 1, a connecting rod 8, a sealing ring 6, a sealing pressing plate 7, a flashboard support frame 9 and limit stops, wherein the valve cover 3 is arranged at two ends of the valve body 1, the driving device is arranged on the valve cover at the upper part of the valve body 1, the driving end of the driving device is connected with the flashboard support frame 9 through threads, the flashboard comprises a first flashboard 4 and a second flashboard 5, the upper end and the lower end of the first flashboard 4 and the lower end of the second flashboard 5 are hinged with the end of the connecting rod 8, the connecting rod 8 is hinged into the flashboard support frame 9, one surfaces, close to the valve body 1, of the first flashboard 4 and the second flashboard 5 are respectively provided with a sealing ring 6, the sealing rings 6 are fixed through the sealing pressing plate 7, a guiding mechanism is arranged between the flashboard support frame 9 and the valve body 1, and the two sides in the valve body 1 are provided with valve body limit stops 12, and the flashboard limit stops 10 matched with the valve body limit stops 12 are arranged on the second flashboard 5.
In the above technical scheme, the guiding mechanism comprises a guiding support 13, a guiding rod 15 and a ball bearing 14, wherein the guiding support 23 is fixed in the valve body 2, two ends of the guiding rod 15 are vertically fixed on the flashboard supporting frame 9 through bolts, and the guiding rod 15 penetrates through the ball bearing 14 on the guiding support 13 to form a linear guide rail pair.
In the above technical solution, the lower end of the shutter support 9 is connected with a rectangular air guide sleeve 16.
In the above technical solution, an extension spring 11 is disposed between the first gate 4 and the second gate 5, one end of the extension spring 11 is connected with a side surface of the first gate 4, and the other end is connected with a corresponding side surface of the second gate 5.
In the above technical solution, the tension springs 11 are provided with two or more groups, and two sides of the first gate plate 4 and the second side plate 5 are provided with tension springs.
In the above technical solution, the second shutter 5 has a larger mass than the first shutter 4.
In the above technical scheme, drive arrangement is electronic jar 2, is equipped with electronic jar connecting seat on the valve gap, and valve gap and electronic jar both pass through bolted connection.
Closing: the upper and lower sides of the first flashboard 4 and the second flashboard 5 are respectively hinged with holes at two ends of a connecting rod 8, the middle hole of the connecting rod 8 is hinged with a flashboard support frame 9, thus the first flashboard 4, the second flashboard 5, the connecting rod 8 and the flashboard support frame 9 form a lever mechanism, the lengths of arms from the first flashboard 4 to the second flashboard 5 to fulcra are equal, the weight of the second flashboard 5 is slightly heavier than that of the first flashboard 4, the levers lose balance under the action of gravity and the tension of a tension spring 11, and the two flashboards are attached back to back. The flashboard support frame 9 moves linearly in the inner cavity of the valve body 1 along the guide rod 15 under the driving force of the electric cylinder 2. Before the flashboard limit stop 10 contacts the valve body limit stop 12 in the downward valve closing process of the flashboard, a gap of 3mm is reserved between the flashboard sealing ring 6 and the valve body sealing seat, so that the phenomenon that the valve body sealing seat is scratched in the rapid valve closing process of the flashboard sealing ring 6 is avoided. When the flashboard limit stop 10 on the second flashboard 5 contacts the valve body limit stop 12, the pushing speed of the electric cylinder 2 is reduced, the two flashboards are attached to the sealing surface of the valve body under the action of the lever, and the valve is sealed by the horizontal positive pressure generated under the action of the gravity of the flashboard and the pushing force of the electric cylinder 2. The structure can keep vacuum sealing of the valve under the gravity action of the first flashboard 4 and the second flashboard 5 after the system is powered off.
The opening process comprises the following steps: when the valve is opened, the gravity of the first flashboard 4 and the second flashboard 5 of the flashboard is overcome under the pulling force of the electric cylinder 2, the friction force between the sealing surfaces of the first flashboard 4 and the second flashboard 5 and the valve body is overcome, then the flashboard limit stop 10 on the second flashboard 5 is separated from the valve body limit stop 12, the first flashboard 4 and the second flashboard 5 are quickly 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 sealing surface of the valve seat are separated and kept at a gap of 3 mm. The first flashboard 4, the second flashboard 5 and the rectangular air guide sleeve 16 do linear motion along the guide rod 15 under the pulling force of the electric cylinder 2 to quickly open and close the valve in place, and the rectangular air guide sleeve 16 is communicated with the inlet and outlet flow passages of the valve body to prevent the medium from flowing into the inner cavity of the valve body to stabilize the medium flow state.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (5)
1. A rectangular vacuum quick cut-off valve is characterized in that: including drive arrangement, valve gap, valve body and the internal flashboard of valve, connecting rod, sealing washer, sealing clamp plate, flashboard support frame, limit stop, 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 and flashboard support frame are connected, the flashboard includes first flashboard and second flashboard, the upper and lower both ends of first flashboard and second flashboard all articulate with the tip of connecting rod, the connecting rod articulates in the flashboard support frame, lever mechanism is constituteed to first flashboard and second flashboard, lever mechanism is constituteed to the flashboard support frame to first flashboard, the arm of force length of fulcrum is equal to first flashboard and second flashboard, second flashboard weight is bigger than first flashboard weight, 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 clamp plate, be equipped with guiding mechanism between aforementioned flashboard support frame and the valve body, be equipped with valve body limit stop in the valve body both sides, guiding mechanism includes guide support, guide bar and ball bearing, guide support fixes in the valve body, guide bar both ends pass through bolt vertical fixing on the flashboard support frame, guide bar is worn to establish in the guide rail pair ball bearing.
2. The rectangular vacuum quick disconnect valve of claim 1, wherein: the lower end of the flashboard support frame is connected with a rectangular air guide sleeve.
3. The rectangular vacuum quick disconnect valve of claim 1, wherein: and an extension spring is arranged between the first flashboard and the second flashboard, one end of the extension spring is connected with the side surface of the first flashboard, and the other end of the extension spring is connected with the corresponding side surface of the second flashboard.
4. A rectangular vacuum quick disconnect valve according to claim 3, wherein: the extension springs are arranged in two or more groups, and extension springs are arranged on two sides of the first flashboard and the second flashboard.
5. The rectangular vacuum quick disconnect valve of 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 bolts.
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 CN115405712A (en) | 2022-11-29 |
| CN115405712B true CN115405712B (en) | 2023-12-12 |
Family
ID=84162472
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 (15)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030026658A1 (en) * | 2001-08-01 | 2003-02-06 | Chun-Ching Wu | Manual light water gate |
-
2022
- 2022-08-26 CN CN202211035831.3A patent/CN115405712B/en active Active
Patent Citations (15)
| 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 |
| 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 |
|---|---|
| CN115405712A (en) | 2022-11-29 |
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