CN114135697B - Multi-pass knife gate valve - Google Patents
Multi-pass knife gate valve Download PDFInfo
- Publication number
- CN114135697B CN114135697B CN202111464393.8A CN202111464393A CN114135697B CN 114135697 B CN114135697 B CN 114135697B CN 202111464393 A CN202111464393 A CN 202111464393A CN 114135697 B CN114135697 B CN 114135697B
- Authority
- CN
- China
- Prior art keywords
- flashboard
- valve body
- disk seat
- sleeves
- knife gate
- 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
- 238000005192 partition Methods 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract 2
- 238000012856 packing Methods 0.000 claims description 21
- 210000004907 gland Anatomy 0.000 claims description 6
- 238000000034 method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating 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
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
-
- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a multi-way knife gate valve, which has the technical scheme that the multi-way knife gate valve comprises a valve body, a plurality of pneumatic actuators and a plurality of flashboards which are respectively connected to output shafts of the pneumatic actuators, wherein a plurality of flashboard sleeves which are circumferentially distributed around the axes of the valve body and are respectively penetrated by the flashboard are arranged on the outer wall of the valve body, the ports of the flashboard sleeves are fixedly connected with brackets which are connected with a machine body of the pneumatic actuators, the inner cavity of the valve body is provided with a partition piece, the inner cavity of the valve body is divided into a plurality of mutually independent medium cavities by the partition piece, the medium cavities are respectively communicated with the inner cavities of the flashboard sleeves, and the end parts of the flashboard which extend into the valve body can form hard sealing with the partition piece, so that the problems that the prior art does not have accurate fixed opening degree and different mediums cannot be mixed are solved.
Description
Technical Field
The invention relates to the field of gate valves, in particular to a multi-pass knife gate valve.
Background
The gate valve is one kind of valve, and the piece of opening and close of gate valve is the flashboard, and the direction of motion of flashboard is mutually perpendicular with the fluid direction, realizes opening and close of gate valve through reciprocate the flashboard. Conventionally, with the valve stem as a flag, the length of the valve stem rise is the opening of the gate valve, and when the valve stem can no longer move, this position is its fully open position. In the actual use process, a plurality of accurate fixed opening degrees are often needed, and people in the structure cannot accurately judge the specific opening degree of the gate valve by naked eyes; and a plurality of mediums need to be respectively conveyed to the same place through a plurality of pipelines and then conveyed out through a pipeline after being mixed, so that the pipeline is complicated and the production cost of enterprises is increased.
Disclosure of Invention
The invention aims to provide a multi-way knife gate valve capable of regulating and controlling accurate opening degree and mixing multiple mediums during transportation.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a multi-way knife gate valve, includes valve body, a plurality of pneumatic actuator and a plurality of flashboard of being connected respectively on a plurality of pneumatic actuator output shafts, be provided with a plurality of flashboard cover that are circumference distribution and supply a plurality of flashboard to run through respectively around its axle center on the valve body outer wall, a plurality of the equal fixedly connected with of port of flashboard cover is connected with the support of pneumatic actuator fuselage, the valve body inner chamber is provided with the separator, the separator is divided into a plurality of mutually independent medium chamber with the valve body inner chamber, a plurality of the medium chamber communicates with the inner chamber of a plurality of flashboard cover respectively, a plurality of the flashboard stretches into the tip homoenergetic in the valve body and forms hard seal with the separator.
As a further improvement of the invention, two adjusting bolts respectively positioned at two sides of the flashboard are connected with the plurality of flashboard sleeves in a threaded manner, and each adjusting bolt penetrates into the flashboard sleeve from outside the flashboard sleeve and is in propping contact with the side wall of the flashboard.
As a further improvement of the invention, a plurality of adjusting bolts are respectively connected with adjusting nuts positioned outside the flashboard sleeve in a threaded manner.
As a further improvement of the invention, the end parts of the flashboards extending into the valve body are respectively provided with a chamfer, and the two ends of the chamfer are respectively positioned on the end face of the flashboard parallel to the diameter direction of the valve body and the end face of the flashboard forming hard seal with the partition piece.
As a further improvement of the invention, the valve body comprises a left valve seat and a right valve seat which are positioned on two sides of the flashboard, wherein the left valve seat and the chamfer are arranged on the same side, the inner diameter of the left valve seat is larger than the inner diameter of the right valve seat, and the outer diameter of the left valve seat is larger than the outer diameter of the right valve seat.
As a further improvement of the invention, the ports of the flashboard sleeves are respectively provided with a packing groove communicated with the inner cavities of the flashboard sleeves, packing filled in the packing grooves and a packing gland used for limiting the packing in the packing grooves.
As a further improvement of the invention, the partition piece is Y-shaped and divides the inner cavity of the valve body into three medium cavities, and the number of the pneumatic actuator, the flashboard sleeve and the bracket is three.
As a further improvement of the invention, a supporting bar for preventing the flashboard from being pushed by the medium is arranged on the surface of the partition piece, which is abutted with the end part of the flashboard.
The invention has the beneficial effects that: the valve body is internally provided with a partition member, the inner cavity of the valve body is divided into a plurality of independent medium cavities by the partition member, the outer wall of the valve body is provided with a plurality of flashboard sleeves which are communicated with the plurality of medium cavities in a one-to-one correspondence manner, the body of the pneumatic actuator and the flashboard sleeves are fixedly connected together by utilizing a bracket, the output shaft of the pneumatic actuator is connected with flashboard inserted in the flashboard sleeves, and the medium cavities are blocked by forming hard seal with the partition member through the flashboard, so that compared with the prior art, the flow of a medium flowing into a pipeline can have accurate and controllable numerical value by opening any one or a plurality of flashboard, and the operation of controlling the flow is more convenient; meanwhile, pipelines for transporting different media can be connected through the plurality of media cavities, any two or more flashboards are opened under the process requirement, so that the media flowing out of the two or more media cavities can be mixed together in the pipelines and transported to corresponding positions.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a right side cross-sectional view of the present invention;
FIG. 3 is an enlarged view of FIG. 2 at A;
fig. 4 is a partial cross-sectional view of the present invention.
Reference numerals: 1. a valve body; 2. a pneumatic actuator; 3. a flashboard; 4. a flashboard sleeve; 5. a bracket; 6. a partition; 7. a medium chamber; 8. a filler tank; 9. a filler; 10. a packing gland; 11. adjusting a bolt; 12. adjusting the nut; 13. chamfering; 14. a left valve seat; 15. a right valve seat; 16. and (5) supporting bars.
Detailed Description
The invention will now be described in further detail with reference to the drawings and examples. Wherein like parts are designated by like reference numerals.
Referring to fig. 1 to 4, a multi-pass knife gate valve of this embodiment includes a valve body 1, a plurality of pneumatic actuators 2 and a plurality of gate plates 3 respectively connected to output shafts of the plurality of pneumatic actuators 2, a plurality of gate plate sleeves 4 circumferentially distributed around an axis of the valve body 1 and respectively penetrated by the plurality of gate plates 3 are provided on an outer wall of the valve body 1, ports of the plurality of gate plate sleeves 4 are fixedly connected with a bracket 5 connected with a body of the pneumatic actuator 2, the number of the pneumatic actuators 2, the gate plates 3, the gate plate sleeves 4 and the bracket 5 are all three, a Y-shaped partition 6 is provided in an inner cavity of the valve body 1, three end parts of the Y-shaped partition 6 are welded together with an inner wall of the valve body 1, the partition 6 divides the inner cavity of the valve body 1 into three mutually independent medium cavities 7, the three medium cavities 7 are respectively communicated with the inner cavities of the three gate plate sleeves 4 one by one, and the end parts of the three gate plates 3 extending into the medium cavities 7 are intersected by two diagonal surfaces and are protruded to form sharp corners of the partition 6, when medium flow is required to be blocked, the pneumatic actuators 2 push the gate plates 3 to separate the two end parts of the gate plates 3 to the two diagonal surfaces 3 until the two end parts of the gate plates 6 are intersected with the partition 6 and are tightly adhered to the two diagonal surfaces 6;
compared with the prior art, the design can enable the flow of the medium flowing into the pipeline to have accurate and controllable numerical value by opening any one or a plurality of flashboards 3, and the flow control operation is more convenient; meanwhile, pipelines for transporting different media can be connected through the plurality of medium cavities 7, any two or more flashboards 3 are opened under the process requirement, so that the media flowing out of the two or more medium cavities 7 can be mixed together in the pipelines and conveyed to corresponding positions.
As a specific implementation way for improvement, referring to fig. 1 and 4, threaded holes are formed on two side walls of the flashboard sleeve 4 in the width direction, two adjusting bolts 11 are screwed into the two threaded holes respectively by the flashboard sleeve 4, the end parts of the two adjusting bolts 11 extending into the flashboard sleeve 4 are respectively in contact with the two side walls of the flashboard 3, and the position of the flashboard 3 relative to the flashboard sleeve 4 in the width direction can be adjusted by rotating the two adjusting bolts 11, so that the length direction of the flashboard 3 is the same as the moving direction of the flashboard 3, the smooth matching between the tip of the following flashboard 3 and the partition plate 6 is ensured, the abrasion phenomenon between the flashboard 3 and the partition plate 6 after the flashboard 3 is askew is avoided, the structural stability of the flashboard 3 and the partition plate 6 is indirectly ensured, and the transmission efficiency of the pneumatic actuator 2 is improved;
further preferably, referring to fig. 1 and 4, since the adjusting bolt 11 is not attached to the outer wall of the shutter housing 4 when the adjusting bolt 11 is in contact with the shutter 3, the adjusting bolt 11 is easy to swing and rotate relative to the shutter housing 4 during the shake of the present invention, so that the shutter 3 is inclined, in order to solve the above problem, the adjusting nut 12 is further screwed onto the adjusting bolt 11, and the adjusting nut 12 is attached to the nut of the adjusting bolt 11 during the installation and use, then the adjusting bolt 11 is screwed onto the shutter housing 4 until the end of the adjusting bolt 11 is attached to the side wall of the shutter 3, and finally the adjusting nut 12 is rotated relative to the adjusting bolt 11 until the adjusting nut 12 is attached to the outer wall of the shutter housing 4; if the flashboard 3 is not adjusted in place, the adjusting nut 12 is rotated to enable the adjusting nut 12 to be far away from the outer wall of the flashboard sleeve 4, then the adjusting bolt 11 is rotated, after the flashboard 3 is adjusted in place, the adjusting nut 12 is rotated again to be attached to the outer wall of the flashboard sleeve 4, and the pretightening force is provided for the adjusting bolt 11 through the adjusting nut 12, so that the connection stability of the adjusting bolt 11 relative to the flashboard sleeve 4 is effectively improved.
As a specific embodiment of improvement, referring to fig. 2 and 3, the chamfer 13 is obtained by chamfering the thickness direction of the gate plate 3, and two ends of the chamfer 13 are respectively positioned on the end surface of the gate plate 3 parallel to the diameter direction of the valve body 1 and the end surface of the gate plate 3 forming a hard seal with the partition 6, so that the end part of the gate plate 3 extending into the medium cavity 7 is easier to cut into the medium, the moving speed of the gate plate 3 in the medium is improved, and the efficiency of the gate plate 3 for blocking the medium cavity 7 is indirectly improved;
further optimized, referring to fig. 2, the valve body 1 includes a left valve seat 14 and a right valve seat 15 located at two sides of the gate 3, the left valve seat 14 is arranged at the same side as the chamfer 13, the inner diameter of the left valve seat 14 is larger than the inner diameter of the right valve seat 15, and the outer diameter of the left valve seat 14 is larger than the outer diameter of the right valve seat 15, in the process that the gate 3 is pulled out of the medium cavity 7 by the pneumatic actuator 2, the two end surfaces of the gate 3 are respectively scraped with the left valve seat 14 and the right valve seat 15, so that the medium or impurities adhered to the gate 3 are effectively slowed down, the drop distance between the left valve seat 14 and the right valve seat 15 in the radial direction of the valve body 1 is similar to the radial distance between the chamfer 13 in the radial direction of the valve body 1, and when the chamfer 13 is not covered by the left valve seat 14 and the right valve seat 15 in the radial direction, the end part of the gate 3 is moved to the position flush with the inner wall of the right valve seat 15, so that the impurities on the chamfer 13 are convenient to flow through the medium in the medium cavity 7 can be washed away, and the gate 3 can be cut into the medium next time; furthermore, if the shutter 3 is to be completely retracted into the shutter housing 4, the two end faces of the shutter 3 can be separated from the left valve seat 14 and the right valve seat 15 at the same time, so as to avoid the phenomenon that one end face of the shutter 3 is not separated from the left valve seat 14 or the right valve seat 15 in time and is deviated, so that the subsequent shutter 3 cannot pass through the space between the left valve seat 14 and the right valve seat 15 smoothly.
As a specific implementation mode of improvement, referring to fig. 2 and 4, the ports of the gate sleeves 4 are provided with a packing groove 8 communicated with the inner cavities of the gate sleeves, packing 9 filled in the packing groove 8 and a packing gland 10 used for limiting the packing 9 in the packing groove 8, the packing 9 and the packing gland 10 are sleeved outside the gate 3, and the gland 10 and the support 5 are not interfered with each other, so that leakage of a medium through the gate sleeves 4 can be avoided, and the tightness between the gate 3 and the gate sleeves 4 is improved.
As a specific embodiment of improvement, referring to fig. 1 to 3, the width of the surface of the partition 6, which is attached to the gate 3, is larger than the thickness of the gate 3, the surface of the partition 6, which is attached to the end of the gate 3, is provided with a support bar 16 for preventing the gate 3 from being pushed by a medium, the support bar 16 is arranged on the same side as the right valve seat 15, after the gate 3 and the partition 6 form a hard seal, the gate 3 is pushed by the medium in the left valve seat 14, the support bar 16 provides support for the gate 3 and is used for countering the medium for pushing the gate 3, and the design can ensure the structural stability of the gate 3 and avoid the phenomenon that the gate 3 is pressed and bends.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (6)
1. A multi-way knife gate valve is characterized in that: the device comprises a valve body (1), a plurality of pneumatic actuators (2) and a plurality of flashboards (3) which are respectively connected to output shafts of the pneumatic actuators (2), wherein a plurality of flashboard sleeves (4) which are circumferentially distributed around the axis of the valve body (1) and are respectively penetrated by the flashboard (3) are arranged on the outer wall of the valve body, a plurality of ports of the flashboard sleeves (4) are fixedly connected with a bracket (5) which is connected with a machine body of the pneumatic actuator (2), a partition (6) is arranged in an inner cavity of the valve body (1), the partition (6) divides the inner cavity of the valve body (1) into a plurality of mutually independent medium cavities (7), the medium cavities (7) are respectively communicated with the inner cavities of the flashboard sleeves (4), and the end parts of the flashboard (3) which extend into the valve body (1) can form hard sealing with the partition (6);
the end parts of the flashboards (3) extending into the valve body (1) are respectively provided with an inclined tangent plane (13), and two ends of the inclined tangent planes (13) are respectively positioned on the end surfaces of the flashboards (3) parallel to the diameter direction of the valve body (1) and the end surfaces of the flashboards (3) and the partition piece (6) forming hard seal;
the valve body (1) is including left disk seat (14) and right disk seat (15) that are located flashboard (3) both sides, left disk seat (14) and chamfer (13) homonymy set up, the internal diameter of left disk seat (14) is greater than the internal diameter of right disk seat (15) and the external diameter of left disk seat (14) is greater than the external diameter of right disk seat (15), left disk seat (14) and right disk seat (15) are close at valve body (1) radial distance with chamfer (13) at valve body (1) radial distance, and when flashboard (3) tip moved to the position with the inner wall parallel and level of right disk seat (15), chamfer (13) are not covered by left disk seat (14), and when flashboard (3) are about to withdraw into flashboard cover (4) completely, flashboard (3) both ends face can break away from simultaneously with left disk seat (14) and right disk seat (15) respectively.
2. A multi-pass knife gate valve according to claim 1 and wherein: the multiple flashboard sleeves (4) are connected with two adjusting bolts (11) which are respectively positioned at two sides of the flashboard (3) in a threaded manner, and the two adjusting bolts (11) penetrate into the flashboard sleeves (4) from outside the flashboard sleeves (4) and are in propping contact with the side wall of the flashboard (3).
3. A multi-pass knife gate valve according to claim 2 and wherein: and a plurality of adjusting bolts (11) are respectively connected with adjusting nuts (12) positioned outside the flashboard sleeve (4) in a threaded manner.
4. A multi-pass knife gate valve according to claim 1 or 2 or 3, characterized in that: the ports of the flashboard sleeves (4) are respectively provided with a packing groove (8) communicated with the inner cavity of the flashboard sleeve, packing (9) filled in the packing grooves (8) and a packing gland (10) used for limiting the packing (9) in the packing grooves (8).
5. A multi-pass knife gate valve according to claim 1 or 2 or 3, characterized in that: the partition piece (6) is Y-shaped and divides the inner cavity of the valve body (1) into three medium cavities (7), and the number of the pneumatic actuator (2), the flashboard (3), the flashboard sleeve (4) and the bracket (5) is three.
6. A multi-pass knife gate valve according to claim 1 or 2 or 3, characterized in that: the surface of the partition piece (6) attached to the end part of the flashboard (3) is provided with a supporting bar (16) for preventing the flashboard (3) from being pushed by a medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111464393.8A CN114135697B (en) | 2021-12-03 | 2021-12-03 | Multi-pass knife gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111464393.8A CN114135697B (en) | 2021-12-03 | 2021-12-03 | Multi-pass knife gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114135697A CN114135697A (en) | 2022-03-04 |
| CN114135697B true CN114135697B (en) | 2024-03-26 |
Family
ID=80387459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111464393.8A Active CN114135697B (en) | 2021-12-03 | 2021-12-03 | Multi-pass knife gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114135697B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001263505A (en) * | 2000-03-21 | 2001-09-26 | V Tex:Kk | Gate valve |
| CN201487268U (en) * | 2009-08-03 | 2010-05-26 | 立信阀门集团有限公司 | Wear-resistant ceramic knife gate valve |
| DE202010003666U1 (en) * | 2010-03-16 | 2010-07-15 | Bürkert Werke GmbH | valve manifold |
| CN201916516U (en) * | 2010-12-30 | 2011-08-03 | 浙江博恩自控阀门有限公司 | Knife gate valve |
| CN203240009U (en) * | 2013-05-09 | 2013-10-16 | 浙江日特科技有限公司 | Diaphragm valve |
| CN204828732U (en) * | 2015-07-29 | 2015-12-02 | 浙江有氟密阀门有限公司 | Stupalox type gate valve |
| CN106979356A (en) * | 2016-01-18 | 2017-07-25 | 多罗特管理控制阀有限公司 | Control valve |
| CN208057991U (en) * | 2018-04-09 | 2018-11-06 | 合力阀门有限公司 | Pneumatic parallel formula gate valve |
| CN209483964U (en) * | 2019-01-30 | 2019-10-11 | 德维阀门铸造（苏州）股份有限公司 | A kind of large caliber flat plate gate valve transport flashboard position limiting structure |
| CN210661421U (en) * | 2019-08-08 | 2020-06-02 | 立信阀门集团有限公司 | Hard-sealing zero-leakage knife gate valve with valve cover |
| CN113251164A (en) * | 2021-06-03 | 2021-08-13 | 温州强工阀门有限公司 | Double-section sealing gate valve |
-
2021
- 2021-12-03 CN CN202111464393.8A patent/CN114135697B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001263505A (en) * | 2000-03-21 | 2001-09-26 | V Tex:Kk | Gate valve |
| CN201487268U (en) * | 2009-08-03 | 2010-05-26 | 立信阀门集团有限公司 | Wear-resistant ceramic knife gate valve |
| DE202010003666U1 (en) * | 2010-03-16 | 2010-07-15 | Bürkert Werke GmbH | valve manifold |
| CN201916516U (en) * | 2010-12-30 | 2011-08-03 | 浙江博恩自控阀门有限公司 | Knife gate valve |
| CN203240009U (en) * | 2013-05-09 | 2013-10-16 | 浙江日特科技有限公司 | Diaphragm valve |
| CN204828732U (en) * | 2015-07-29 | 2015-12-02 | 浙江有氟密阀门有限公司 | Stupalox type gate valve |
| CN106979356A (en) * | 2016-01-18 | 2017-07-25 | 多罗特管理控制阀有限公司 | Control valve |
| CN208057991U (en) * | 2018-04-09 | 2018-11-06 | 合力阀门有限公司 | Pneumatic parallel formula gate valve |
| CN209483964U (en) * | 2019-01-30 | 2019-10-11 | 德维阀门铸造（苏州）股份有限公司 | A kind of large caliber flat plate gate valve transport flashboard position limiting structure |
| CN210661421U (en) * | 2019-08-08 | 2020-06-02 | 立信阀门集团有限公司 | Hard-sealing zero-leakage knife gate valve with valve cover |
| CN113251164A (en) * | 2021-06-03 | 2021-08-13 | 温州强工阀门有限公司 | Double-section sealing gate valve |
Non-Patent Citations (1)
| Title |
|---|
| 闸阀密封结构改进;苏庆华;许金海;刘峰;;阀门;20110625(第03期);全文 * |
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| Publication number | Publication date |
|---|---|
| CN114135697A (en) | 2022-03-04 |
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