CN113431923B - Chemical valve with flow dividing and guiding functions - Google Patents
Chemical valve with flow dividing and guiding functions Download PDFInfo
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- CN113431923B CN113431923B CN202110985108.0A CN202110985108A CN113431923B CN 113431923 B CN113431923 B CN 113431923B CN 202110985108 A CN202110985108 A CN 202110985108A CN 113431923 B CN113431923 B CN 113431923B
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- movable plate
- fixed
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- sealing block
- bottom end
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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
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
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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
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
- F16K31/605—Handles for single handle mixing valves
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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
- F16K35/00—Means to prevent accidental or unauthorised actuation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a chemical valve with a direction-dividing flow guide function, which comprises a fixed column, wherein an upper fixed table is fixedly arranged at the bottom end of the fixed column, a lower fixed table is movably arranged at the bottom end of the upper fixed table, a conveying pipeline is fixedly arranged at the bottom end of the lower fixed table, and a plurality of conveying pipe inner baffles are fixedly arranged in the conveying pipeline. According to the invention, through the matching of the rotating shaft of the sealing block and the bending spring, when the movable plate moves downwards, the bottom of the sealing block is upwards applied with force by the top end of the baffle plate in the conveying pipe, and then the sealing block rotates inwards through the rotating shaft of the sealing block, so that the sealing block cannot block the baffle plate, and the stability of the device in sealing is realized.
Description
Technical Field
The invention relates to the technical field of design of chemical valves, in particular to a chemical valve with a diversion function.
Background
With the rapid development of social economy, the use of chemical valves has become one of the very common valves in the chemical industry of people, the chemical industry generally chooses a valve with a straight-through flow passage due to small flow resistance, and a valve for stopping and opening media is usually chosen, the valve is easy to adjust the flow, and the ball valve and the plug valve are suitable for reversing and shunting. The commonly used chemical valves are stop valves, ball valves, gate valves, safety valves, check valves, plug valves, etc. The main stream of the chemical valve medium contains chemical substances, and acid-base corrosion-containing media are abundant, wherein the chemical valve capable of diversion is abundant.
However, when the existing chemical valve is divided into diversion parts, water permeates into the water outlet along the gap due to imperfect sealing, so that accidents occur when the device is used due to leakage, the valve is difficult to stabilize, and accidents occur when the diversion parts are divided due to looseness.
Disclosure of Invention
The invention aims to provide a chemical valve with a diversion function, and aims to solve the problems that when diversion is carried out, water permeates into a water outlet along a gap due to imperfect sealing when the chemical valve provided by the background technology, the device leaks, accidents occur when the device is used, the valve is difficult to stabilize, accidents occur due to diversion due to looseness, and the like.
In order to achieve the purpose, the invention provides the following technical scheme: a chemical valve with a diversion function comprises a fixed column, wherein an upper fixed platform is fixedly arranged at the bottom end of the fixed column, a lower fixed platform is movably arranged at the bottom end of the upper fixed platform, a conveying pipeline is fixedly arranged at the bottom end of the lower fixed platform, a plurality of conveying pipe inner baffles are fixedly arranged inside the conveying pipeline, a movable plate rotating shaft is movably arranged inside the fixed column, penetrates through the bottom end of the fixed column and extends into the conveying pipeline, a movable plate is movably arranged at the bottom end of the movable plate rotating shaft, four fixed arc plates are fixedly arranged at the bottom end of the movable plate, sealing block rotating shafts are movably arranged on the surfaces of the fixed arc plates, sealing blocks are movably arranged on the surfaces of the sealing block rotating shafts, four bending springs are movably arranged at the top end of the movable plate, and are attached to one surface of the inner side of each sealing block, the top surface of fly leaf is equipped with four fly leaf top grooves, the inside in fly leaf top groove all is equipped with compression spring, the equal fixed mounting circular arc board end of bottom of fixed circular arc board is buckled, the inside in fly leaf top groove is all gone into to the circular arc board end knot, the equal movable mounting gyro wheel in bottom of circular arc board end knot.
Preferably, a fixed column inner groove is formed in the fixed column, two arc buckles are fixedly mounted at the lower end of the movable plate rotating shaft and are all clamped into the fixed column inner groove, four fixing clamping grooves are formed in the fixed column inner groove, and the arc buckles are all clamped into the fixing clamping grooves.
Preferably, the top fixed mounting carousel of fly leaf pivot, the fly leaf pivot is located the inside fixed position installation limiting plate of transportation pipeline, go up a plurality of fixed snap rings of top fixed mounting of fixed station, the inside of fixed station is all gone into down to the bottom of fixed snap ring.
Preferably, the bottom fixing pipe is fixedly installed at the bottom end of the conveying pipeline, installation flanges are fixed to the two ends of the conveying pipeline and the bottom end surface of the bottom fixing pipe, and a plurality of flange through holes are formed in the surface of each flange.
Preferably, the surface of the movable plate is fixedly provided with two movable plate outer buckles, the surface of the baffle in the conveying pipe is provided with a plurality of baffle outer grooves, and the movable plate outer buckles are clamped in the baffle outer grooves.
Preferably, the top fixed mounting fly leaf top of fly leaf is detained, the surface that the fly leaf pivot is close to the bottom is equipped with the outer groove of pivot, the fly leaf top is detained the card and is gone into the inside in the outer groove of pivot.
Preferably, one side of the conveying pipeline is provided with a water inlet, and the other side of the conveying pipeline and the bottom end of the bottom fixing pipe are both provided with a water outlet.
Preferably, the surfaces of the sealing blocks are provided with inclined grooves, and the surfaces of the inner baffles of the conveying pipe are provided with arc grooves.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the matching of the rotating shaft of the sealing block and the bending spring, when the movable plate moves downwards, the bottom of the sealing block is upwards applied with force by the top end of the baffle plate in the conveying pipe, so that the sealing block rotates inwards through the rotating shaft of the sealing block, and the sealing block cannot block the movable plate when the movable plate moves downwards;
when the movable plate moves upwards, the chute on the surface of the sealing block is applied with force to the inner side by the baffle plate in the conveying pipe, and then the fixed arc plate drives the sealing block to move towards the inner side of the movable plate through the matching of the compression spring and the bottom buckle of the arc plate, so that the sealing block cannot block the movable plate when the movable plate moves upwards;
through the matching of the inner grooves of the fixed columns and the fixed clamping grooves, when the movable plate rotating shaft drives the movable plate to move upwards or downwards, the arc buckles on the surface of the movable plate rotating shaft can be rotatably clamped into the fixed clamping grooves, so that the movable plate is stabilized in the middle of the baffle plate in the conveying pipe, and the stabilization of the device during sealing is realized;
2. according to the invention, through the matching of the sealing block and the movable plate, when the movable plate blocks the baffle plate in the conveying pipe, the gap between the movable plate and the baffle plate in the conveying pipe can be sealed through the sealing block, so that the sealing effect of the device in diversion is realized;
through the mode of movably installing the idler wheels in the inner part of the bottom buckle of the arc plate, when the movable plate rotating shaft drives the movable plate to move upwards, the fixed arc plate can move inwards to reduce the friction of the bottom, the friction of the bottom buckle of the arc plate is reduced, and the service life of the device is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a cross-sectional elevation view of the invention in its entirety;
FIG. 3 is a cross-sectional side view of the present invention in its entirety;
FIG. 4 is a partial schematic view of part A of the present invention;
FIG. 5 is a partial schematic view of part B of the present invention;
FIG. 6 is a partial schematic view of part C of the present invention;
fig. 7 is a partial structural view of the portion D of the present invention.
In the figure: 1. fixing a column; 2. an upper fixed table; 3. fixing the snap ring; 4. a lower fixed table; 5. a transport pipeline; 6. a flange; 7. a flange through hole; 8. a bottom stationary tube; 9. a turntable; 10. a movable plate rotating shaft; 11. an inner baffle of the conveying pipe; 12. a movable plate; 13. a limiting plate; 14. an arc buckle; 15. fixing an inner groove; 16. fixing the clamping groove; 17. fixing the arc plate; 18. a seal block rotating shaft; 19. a sealing block; 20. the movable plate is externally buckled; 21. a baffle outer groove; 22. a bending spring; 23. the movable plate is buckled; 24. a rotating shaft outer groove; 25. a movable plate top groove; 26. the bottom of the arc plate is buckled; 27. a roller; 28. a water inlet; 29. a water outlet; 30. compressing the spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to 7, an embodiment of the present invention includes: a chemical valve with a diversion function comprises a fixed column 1, an upper fixed platform 2 is fixedly installed at the bottom end of the fixed column 1, a lower fixed platform 4 is movably installed at the bottom end of the upper fixed platform 2, a conveying pipeline 5 is fixedly installed at the bottom end of the lower fixed platform 4, a plurality of conveying pipe inner baffles 11 are fixedly installed inside the conveying pipeline 5, a movable plate rotating shaft 10 is movably installed inside the fixed column 1, the movable plate rotating shaft 10 penetrates through the bottom end of the fixed column 1 and extends to the inside of the conveying pipeline 5, a movable plate 12 is movably installed at the bottom end of the movable plate rotating shaft 10, four fixed arc plates 17 are fixedly installed at the bottom end of the movable plate 12, a sealing block rotating shaft 18 is movably installed on the surfaces of the fixed arc plates 17, a sealing block 19 is movably installed on the surfaces of the sealing block rotating shaft 18, four bending springs 22 are movably installed at the top end of the movable plate 12, and the bending springs 22 are attached to one side of the inner side of the sealing block 19, the top surface of the movable plate 12 is provided with four movable plate top grooves 25, compression springs 30 are arranged inside the movable plate top grooves 25, the bottom ends of the fixed arc plates 17 are fixedly provided with arc plate bottom buckles 26, the arc plate bottom buckles 26 are clamped into the movable plate top grooves 25, and rollers 27 are movably arranged at the bottom ends of the arc plate bottom buckles 26.
Further, a fixed column inner groove 15 is formed in the fixed column 1, two arc buckles 14 are fixedly mounted at the lower end of the movable plate rotating shaft 10, the arc buckles 14 are all clamped in the fixed column inner groove 15, four fixing clamping grooves 16 are formed in the fixed column inner groove 15, the arc buckles 14 are all clamped in the fixing clamping grooves 16, and through the cooperation of the fixed column inner groove 15 and the fixing clamping grooves 16, when the movable plate rotating shaft 10 drives the movable plate 12 to move upwards or downwards, the arc buckles 14 on the surface of the movable plate rotating shaft 10 can be rotatably clamped in the fixing clamping grooves 16, so that the movable plate 12 is stabilized in the middle of the conveying pipe inner baffle plate 11, and the device is stabilized in sealing.
Further, the top fixed mounting carousel 9 of fly leaf pivot 10, fly leaf pivot 10 are located the inside fixed mounting limiting plate 13 in position of transportation pipeline 5, go up a plurality of fixed snap rings 3 of top fixed mounting of fixed station 2, and the inside of fixed station 4 is down all blocked in the bottom of fixed snap ring 3, carries out spacing protection to fly leaf pivot 10 through limiting plate 13, prevents when the user equipment, and fly leaf pivot 10 is pulled out from the device is inside.
Further, fixed pipe 8 at the bottom of the bottom fixed mounting of transport pipe 5, transport pipe 5's both ends and the bottom surface of fixed pipe 8 all fixed mounting flange 6 at the bottom, flange 6's surface all is equipped with a plurality of flange through-holes 7.
Further, two movable plate outer buckles 20 are fixedly mounted on the surface of the movable plate 12, a plurality of baffle outer grooves 21 are formed in the surface of the baffle 11 in the conveying pipe, the movable plate outer buckles 20 are clamped into the baffle outer grooves 21, and the movable plate outer buckles 20 abut against the baffle outer grooves 21 when the movable plate rotating shaft 10 is fixed by the rotating arc outer buckles 14 through the cooperation of the movable plate outer buckles 20 and the baffle outer grooves 21, so that the movable plate 12 movably mounted at the bottom of the movable plate rotating shaft 10 is prevented from rotating along with the movable plate outer buckles.
Further, a movable plate top buckle 23 is fixedly installed at the top end of the movable plate 12, a rotating shaft outer groove 24 is formed on the surface of the movable plate rotating shaft 10 close to the bottom end, and the movable plate top buckle 23 is clamped inside the rotating shaft outer groove 24.
Further, one side of the transportation pipeline 5 is provided with a water inlet 28, and the other side of the transportation pipeline 5 and the bottom end of the bottom fixing pipe 8 are both provided with a water outlet 29.
Further, the surface of the sealing block 19 is provided with a chute, the surface of the baffle plate 11 in the conveying pipe is provided with an arc groove, and the friction of the internal parts of the device is reduced through the cooperation of the chute and the arc groove, so that the service life is prolonged.
When in use, through the matching of the sealing block rotating shaft 18 and the bending spring 22, when the movable plate 12 moves downwards, the bottom of the sealing block 19 is applied with force upwards by the top end of the baffle 11 in the conveying pipe, so that the sealing block 19 rotates inwards through the sealing block rotating shaft 18, and the sealing block 19 cannot block the movable plate 12 when the movable plate moves downwards;
when the movable plate 12 moves upwards, the chute on the surface of the sealing block 19 is applied with force inwards by the baffle plate 11 in the conveying pipe, and then the fixed arc plate 17 drives the sealing block 19 to move towards the inner side of the movable plate 12 through the cooperation of the compression spring 30 and the arc plate bottom buckle 26, so that the sealing block 19 cannot block the movable plate 12 when the movable plate moves upwards;
through the cooperation of the fixed column inner groove 15 and the fixed slot 16, when the movable plate rotating shaft 10 drives the movable plate 12 to move upwards or downwards, the arc buckle 14 on the surface of the movable plate rotating shaft 10 can be rotatably clamped into the fixed slot 16, so that the movable plate 12 is stabilized in the middle of the conveying pipe inner baffle 11, the stability of the device during sealing is realized, through the cooperation of the sealing block 19 and the movable plate 12, when the movable plate 12 blocks the conveying pipe inner baffle 11, the gap between the movable plate 12 and the conveying pipe inner baffle 11 can be sealed through the sealing block 19, and the sealing effect of the device during diversion is realized.
Claims (7)
1. The utility model provides a chemical industry valve with divide to water conservancy diversion function, includes fixed column (1), its characterized in that: an upper fixed table (2) is fixedly installed at the bottom end of the fixed column (1), a lower fixed table (4) is movably installed at the bottom end of the upper fixed table (2), a conveying pipeline (5) is fixedly installed at the bottom end of the lower fixed table (4), a plurality of conveying pipe internal baffles (11) are fixedly installed inside the conveying pipeline (5), a movable plate rotating shaft (10) is movably installed inside the fixed column (1), the movable plate rotating shaft (10) penetrates through the bottom end of the fixed column (1) and extends into the conveying pipeline (5), a movable plate (12) is movably installed at the bottom end of the movable plate rotating shaft (10), four fixed arc plates (17) are fixedly installed at the bottom end of the movable plate (12), sealing block rotating shafts (18) are movably installed on the surfaces of the fixed arc plates (17), and sealing blocks (19) are movably installed on the surfaces of the sealing block rotating shafts (18), the top end of the movable plate (12) is movably provided with four bending springs (22), the bending springs (22) are attached to one side of the inner side of the sealing block (19), the top end surface of the movable plate (12) is provided with four movable plate top grooves (25), compression springs (30) are arranged inside the movable plate top grooves (25), the bottom ends of the fixed arc plates (17) are fixedly provided with arc plate bottom buckles (26), the arc plate bottom buckles (26) are clamped into the movable plate top grooves (25), and the bottom ends of the arc plate bottom buckles (26) are movably provided with rollers (27);
two outer buttons of movable plate (20) of fixed surface installation of movable plate (12), the surface of baffle (11) is equipped with outer groove of a plurality of baffles (21) in the transport pipe, the inside in outer groove of baffle (21) is all gone into to outer button of movable plate (20).
2. The chemical valve with diversion function of claim 1, wherein: the novel movable plate fixing device is characterized in that a fixing column inner groove (15) is formed in the fixing column (1), two arc buckles (14) are fixedly mounted at the lower end of the movable plate rotating shaft (10), the arc buckles (14) are all clamped into the fixing column inner groove (15), four fixing clamping grooves (16) are formed in the fixing column inner groove (15), and the arc buckles (14) are all clamped into the fixing clamping grooves (16).
3. The chemical valve with diversion function according to claim 2, wherein: top fixed mounting carousel (9) of fly leaf pivot (10), fly leaf pivot (10) are located the inside fixed position installation limiting plate (13) of transport pipe way (5), go up a plurality of fixed snap rings (3) of top fixed mounting of fixed station (2), the inside of fixed station (4) is gone into down to the bottom of fixed snap ring (3) all block.
4. The chemical valve with diversion function of claim 1, wherein: fixed pipe (8) at the bottom of the bottom fixed mounting of transport pipe way (5), the both ends of transport pipe way (5) and the bottom surface of fixed pipe (8) all fix mounting flange (6), the surface of flange (6) all is equipped with a plurality of flange through-holes (7).
5. The chemical valve with diversion function of claim 1, wherein: the top fixed mounting fly leaf top of fly leaf (12) is detained (23), the surface that fly leaf pivot (10) are close to the bottom is equipped with pivot outer tank (24), fly leaf top is detained (23) card and is gone into the inside in pivot outer tank (24).
6. The chemical valve with diversion function of claim 1, wherein: one side of the transportation pipeline (5) is provided with a water inlet (28), and the other side of the transportation pipeline (5) and the bottom end of the bottom fixing pipe (8) are both provided with a water outlet (29).
7. The chemical valve with diversion function of claim 1, wherein: the surface of the sealing block (19) is provided with inclined grooves, and the surface of the baffle plate (11) in the conveying pipe is provided with arc grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110985108.0A CN113431923B (en) | 2021-08-26 | 2021-08-26 | Chemical valve with flow dividing and guiding functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110985108.0A CN113431923B (en) | 2021-08-26 | 2021-08-26 | Chemical valve with flow dividing and guiding functions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113431923A CN113431923A (en) | 2021-09-24 |
| CN113431923B true CN113431923B (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110985108.0A Active CN113431923B (en) | 2021-08-26 | 2021-08-26 | Chemical valve with flow dividing and guiding functions |
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| Country | Link |
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| CN (1) | CN113431923B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001166A (en) * | 2021-11-19 | 2022-02-01 | 江苏永丰电器仪表有限公司 | Anti-blocking straight-through stop valve with multi-stage filtration processing function |
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| KR20040032561A (en) * | 2002-10-10 | 2004-04-17 | 주식회사 디케이씨 | Watertight structure and watertight method of 2-way solenoid valve |
| CN103821965A (en) * | 2014-01-25 | 2014-05-28 | 哈电集团哈尔滨电站阀门有限公司 | High-pressure heater three-way valve driven by inner high-pressure piston |
| CN205371698U (en) * | 2015-12-30 | 2016-07-06 | 上海瑞控阀门有限公司 | Three -way regulation valve |
| CN207145656U (en) * | 2017-08-16 | 2018-03-27 | 北京科勒有限公司 | Switching valve and water knockout drum |
| CN209557678U (en) * | 2019-01-17 | 2019-10-29 | 温州强工阀门有限公司 | A kind of shut-off valve with high leakproofness |
| CN210566311U (en) * | 2019-08-28 | 2020-05-19 | 沪航科技集团有限公司 | Butterfly valve |
-
2021
- 2021-08-26 CN CN202110985108.0A patent/CN113431923B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040032561A (en) * | 2002-10-10 | 2004-04-17 | 주식회사 디케이씨 | Watertight structure and watertight method of 2-way solenoid valve |
| CN103821965A (en) * | 2014-01-25 | 2014-05-28 | 哈电集团哈尔滨电站阀门有限公司 | High-pressure heater three-way valve driven by inner high-pressure piston |
| CN205371698U (en) * | 2015-12-30 | 2016-07-06 | 上海瑞控阀门有限公司 | Three -way regulation valve |
| CN207145656U (en) * | 2017-08-16 | 2018-03-27 | 北京科勒有限公司 | Switching valve and water knockout drum |
| CN209557678U (en) * | 2019-01-17 | 2019-10-29 | 温州强工阀门有限公司 | A kind of shut-off valve with high leakproofness |
| CN210566311U (en) * | 2019-08-28 | 2020-05-19 | 沪航科技集团有限公司 | Butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113431923A (en) | 2021-09-24 |
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