CN114151552B - Low-temperature butterfly valve with detachable antirust built-in filter screen - Google Patents
Low-temperature butterfly valve with detachable antirust built-in filter screen Download PDFInfo
- Publication number
- CN114151552B CN114151552B CN202111374353.4A CN202111374353A CN114151552B CN 114151552 B CN114151552 B CN 114151552B CN 202111374353 A CN202111374353 A CN 202111374353A CN 114151552 B CN114151552 B CN 114151552B
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- China
- Prior art keywords
- filter screen
- box
- air
- pipe
- valve
- 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.)
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Links
- 238000004140 cleaning Methods 0.000 claims abstract description 63
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000003860 storage Methods 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 14
- 239000012634 fragment Substances 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
- F16K1/16—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 with pivoted closure-members
- F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
- F16K1/22—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a low-temperature butterfly valve with a detachable antirust built-in filter screen, which comprises a valve body, wherein square pipes are arranged at two ends of the valve body, the filter screen is arranged in the square pipes, a cleaning box communicated with the inside of the square pipes is fixedly connected to the lower ends of the square pipes, the cleaning box consists of a box opening and a box body, a cleaning frame is connected in a sealing sliding manner in the box opening, a driving device for driving the cleaning frame to move is arranged on the cleaning frame, and one side, close to a valve core, of the cleaning frame is attached to the side wall of the filter screen. According to the invention, the cleaning frame and the driving device are arranged, so that the driving device can be operated by utilizing the kinetic energy of the conveying fluid, and the cleaning frame is driven to move up and down, so that rust fragments or impurities trapped on the outer side of the filter screen can be scraped into the cleaning box in time, the filter screen is prevented from being blocked, the conveying pipeline is not required to be closed for cleaning, and good conveying efficiency can be maintained.
Description
Technical Field
The invention relates to the technical field of butterfly valves, in particular to a low-temperature butterfly valve with a detachable rust-proof built-in filter screen.
Background
Butterfly valves are a very common valve device, where low temperature butterfly valves are often used in pipes with low ambient temperature, and some butterfly valves are also provided with built-in filter screens in order to prevent the valve body from being blocked.
The three-eccentric butterfly valve with the detachable rust-proof built-in filter screen is provided with the detachable filter screen plate, and the filter screen plate is manually fixed through the fixing ring, so that the butterfly valve is prevented from being separated in use, and the blocking of rust fragments is influenced. According to the scheme, although corrosion fragments can be blocked, the blocked corrosion fragments or impurities in the fluid can be trapped outside the filter screen, so that the filter screen is blocked, the fluid conveying efficiency is affected, and therefore, frequent pipeline closing is often needed for cleaning, and the fluid conveying is troublesome and delayed. Accordingly, the application document provides a low-temperature butterfly valve with a detachable rust-proof built-in filter screen.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a low-temperature butterfly valve with a detachable antirust built-in filter screen.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a take can dismantle low temperature butterfly valve of rust-resistant built-in filter screen, includes the valve body, the valve body both ends all are equipped with square pipe, square intraductal filter screen that is equipped with, square pipe lower extreme fixedly connected with rather than inside communicating clearance box, just the clearance box comprises box mouth and box body, sealed sliding connection has the clearance frame in the box mouth, install the drive arrangement that drives its removal on the clearance frame, one side laminating that the clearance frame is close to the case is on the lateral wall of filter screen.
Preferably, the driving device comprises a telescopic airbag fixedly connected to the upper end of the cleaning frame, the upper end of the telescopic airbag is fixedly connected to the inner top of the square tube, the square tube is fixedly provided with an air storage bag, the telescopic airbag is communicated with the air storage bag through an air inlet tube, a pressure release valve is arranged in the air inlet tube, an arc-shaped groove is formed in the side wall of the square tube, and an exhaust mechanism for exhausting the air storage bag is arranged in the arc-shaped groove.
Preferably, the exhaust mechanism comprises a water wheel rotationally connected in the arc-shaped groove, the water wheel consists of a plurality of blades and a magnetic rotating shaft, a strip-shaped groove is formed in the side wall of the square tube, a magnetic sliding plug is connected in the strip-shaped groove in a sealing sliding manner, a one-way air inlet hole is formed in the inner wall of the strip-shaped groove, a one-way air outlet hole is formed in the side wall of the magnetic sliding plug, and the strip-shaped groove is communicated with the air storage bag through an exhaust pipe.
Preferably, the caliber of the box body is larger than that of the box opening, and the box body and the box opening are both square structures.
Preferably, the cleaning frame is provided with an air outlet pipe communicated with the telescopic air bag, and the pipe diameter of the air outlet pipe is smaller than that of the air inlet pipe.
Preferably, the gas storage bag and the telescopic air bag are both made of rubber materials, a valve core is arranged in the valve body, and a valve rod is arranged on the valve core.
The invention has the following beneficial effects:
1. by arranging the cleaning frame and the driving device, the driving device can be operated by utilizing the kinetic energy of the conveying fluid, so that the cleaning frame is driven to move up and down, rust fragments or impurities trapped on the outer side of the filter screen are scraped into the cleaning box in time, the filter screen is prevented from being blocked, the conveying pipeline is not required to be closed for cleaning, and good conveying efficiency can be maintained by self;
2. through setting up parts such as gas storage bag, flexible gasbag, intake pipe and relief valve, accessible relief valve sets up a threshold, so can clear up regularly, but make the frequent reciprocates of clearance frame clear up to guarantee that clearance frame and filter screen have longer life.
Drawings
FIG. 1 is a schematic diagram of a low temperature butterfly valve with a detachable rust-proof built-in filter screen;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the structure at B-B in FIG. 1;
fig. 4 is a schematic structural diagram of the cleaning frame in the present invention when moving down for cleaning.
In the figure: 1 valve body, 2 case, 3 valve rod, 4 side's pipe, 5 filter screen, 6 clearance frame, 7 flexible gasbag, 8 blast pipe, 9 outlet duct, 10 clearance box, 101 box mouth, 102 box body, 11 water wheels, 111 blade, 112 magnetism pivot, 12 bar grooves, 13 magnetism system sliding plug, 14 one-way inlet port, 15 one-way venthole, 16 air storage bag, 17 intake pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-4, a low-temperature butterfly valve with a detachable rust-proof built-in filter screen comprises a valve body 1, wherein a valve core 2 is arranged in the valve body 1, and a valve rod 3 is arranged on the valve core 2. Both ends of the valve body 1 are provided with square pipes 4, a filter screen 5 is arranged in each square pipe 4, the lower end of each square pipe 4 is fixedly connected with a cleaning box 10 communicated with the inside of each square pipe, each cleaning box 10 consists of a box opening 101 and a box body 102, the caliber of each box body 102 is larger than that of each box opening 101, and each box body 102 and each box opening 101 are of square structures. The cleaning frame 6 is hermetically and slidingly connected in the box opening 101, and in an initial state, the lower end of the cleaning frame 6 is arranged in the box opening 101, so that fluid can be prevented from flowing into the cleaning box 10, and in addition, an air hole (not shown in the figure) is formed in the upper end of the cleaning box 10, so that when the cleaning frame 6 moves downwards in specific manufacturing, air in the cleaning box 10 can be discharged, and the cleaning frame 6 can be conveniently moved downwards without obstruction;
when the cleaning frame 6 moves downwards to clean, the fluid can flow into the cleaning box through the cleaning frame 6 when the lower part of the cleaning frame 6 enters the box body 102, so that rust fragments and impurities in the cleaning frame 6 can be flushed into the cleaning box, and the cleaning frame 6 can be cleaned.
The cleaning frame 6 is provided with a driving device for driving the cleaning frame to move, and one side of the cleaning frame 6, which is close to the valve core 2, is attached to the side wall of the filter screen 5.
The driving device comprises a telescopic airbag 7 fixedly connected to the upper end of the cleaning frame 6, the upper end of the telescopic airbag 7 is fixedly connected to the inner top of the square tube 4, the square tube 4 is fixedly provided with an air storage bag 16, the telescopic airbag 7 is communicated with the air storage bag 16 through an air inlet tube 17, the cleaning frame 6 is provided with an air outlet tube 9 communicated with the telescopic airbag 7, and the tube diameter of the air outlet tube 9 is smaller than that of the air inlet tube 17.
The air storage bag 16 and the telescopic air bag 7 are made of rubber materials. And a pressure release valve is arranged in the air inlet pipe 17. It should be noted that, when cleaning the cleaning box 10 regularly, only the state of the air storage bag 16 above the square tube 4 needs to be observed, when the volume of the air storage bag 16 continuously decreases, it can be judged that the cleaning frame 6 in the device moves downwards to clean, at this time, the cleaning box 10 cannot be opened to clean, otherwise, the fluid in the valve body 1 leaks, and when the volume of the air storage bag 16 continuously increases, it can be judged that the pressure release valve is closed, at this time, the cleaning box 10 can be opened to clean. In addition, the volume of the air storage bag 16 can be set larger, and the threshold value of the pressure release valve can be set larger, so that on one hand, the cleaning period of the cleaning frame 6 can be properly prolonged, the abrasion of the cleaning frame 6 and the filter screen 5 can be reduced, and on the other hand, the cleaning box 10 can be ensured to have enough time to clean.
The side wall of the square tube 4 is provided with an arc-shaped groove, an exhaust mechanism for exhausting the air storage bag 16 is arranged in the arc-shaped groove, the exhaust mechanism comprises a water wheel 11 rotationally connected in the arc-shaped groove, the water wheel 11 consists of a plurality of blades 111 and a magnetic rotating shaft 112, specifically, the magnetic poles of the magnetic rotating shaft 112 are symmetrically distributed along a vertical central line as shown in fig. 2, and the two magnetic poles of the magnetic sliding plug 13 are symmetrically distributed along the vertical central line.
The side wall of the square tube 4 is provided with a bar-shaped groove 12, a magnetic sliding plug 13 is connected in the bar-shaped groove 12 in a sealing sliding manner, the inner wall of the bar-shaped groove 12 is provided with a one-way air inlet hole 14, the side wall of the magnetic sliding plug 13 is provided with a one-way air outlet hole 15, and the bar-shaped groove 12 is communicated with the air storage bag 16 through an exhaust pipe 8. It should be noted that, the unidirectional air inlet hole 14 restricts the air from flowing into the bar-shaped groove 12 from the outside of the bar-shaped groove 12 in one direction, the unidirectional air outlet hole 15 restricts the air from flowing from the left side of the magnetic sliding plug 13 to the right side of the magnetic sliding plug in one direction, and a unidirectional valve corresponding to the flow direction is specifically arranged in the hole, so that the magnetic sliding plug 13 can continuously blow the air into the air storage bag 16 when moving back and forth.
In the use process of the device, in the initial state, as shown in fig. 1, the lower end of the cleaning frame 6 is located in the box opening 101, and at this time, the box opening 101 can be sealed, so that fluid cannot enter the cleaning box 10.
When the fluid in the pipeline flows through the device, the fluid passes through the square pipe 4, so that the water wheel 11 in the arc-shaped groove can be pushed to circularly rotate. When the water wheel 11 rotates, the magnetic rotating shaft 112 of the water wheel 11 also rotates, the two magnetic poles of the magnetic rotating shaft 112 are continuously opposite to the same magnetic pole of the magnetic sliding plug 13 and periodically attract and repel each other, so that the magnetic sliding plug 13 can reciprocate back and forth, and air can be continuously blown into the air storage bag 16 through the exhaust pipe 8 under the unidirectional air inlet and outlet effects of the unidirectional air inlet hole 14 and the unidirectional air outlet hole 15, the air storage bag 16 is continuously expanded, and the air pressure in the air storage bag 16 is also continuously increased.
When the air pressure value in the air storage bag 16 rises to the threshold value of the pressure relief valve in the air inlet pipe 17, the pressure relief valve is opened, high-pressure air flow in the air storage bag 16 rapidly flows into the telescopic air bag 7 through the air inlet pipe 17 and is discharged from the air outlet pipe 9, and the air outlet amount discharged from the air outlet pipe 9 is smaller than the air inlet amount of the air inlet pipe 17 because the pipe diameter of the air inlet pipe 17 is larger than the pipe diameter of the air outlet pipe 9, so that the air pressure value in the telescopic air bag 7 is continuously increased, the telescopic air bag 7 is stretched, and the cleaning frame 6 can be pushed to move downwards. Referring to fig. 4, the cleaning frame 6 may scrape the rust fragments or other impurities trapped on the outer side of the filter screen 5 into the cleaning box 10, and the fluid may flow into the cleaning box 10 through the cleaning frame 6, so that the fluid may flush the rust fragments or impurities in the cleaning frame 6 into the cleaning box 10, and may clean the cleaning frame 6, thereby preventing the filter screen 5 from being re-polluted when the cleaning frame is reset.
When the air pressure value in the air storage bag 16 is smaller than the threshold value of the pressure relief valve in the air inlet pipe 17, the pressure relief valve is closed, the telescopic air bag 7 can shrink under the action of self elasticity and discharge the redundant air along the air outlet pipe 9, and the telescopic air bag 7 also pulls the cleaning frame 6 to move upwards to reset when shrinking.
To sum up, this device is in the use, exhaust mechanism can be continuous to the air storage bag 16 air feed to under the effect of the relief valve in intake pipe 17, flexible gasbag 7 is flexible once at intervals, thereby promote the clearance frame 6 and reciprocate once, so can regularly scrape into clearance box 10 with the corrosion piece and the impurity that hold back on the filter screen 5, need not to close whole conveying line and clear up, can remain higher fluid conveying efficiency all the time, and make clearance frame 6 clear up at intervals, reducible clearance frame 6 and filter screen 5's wearing and tearing, extension two life, only need the debris in the periodical clearance box 10 can.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. The utility model provides a take can dismantle low temperature butterfly valve of rust-resistant built-in filter screen, includes valve body (1), its characterized in that, valve body (1) both ends all are equipped with square pipe (4), be equipped with filter screen (5) in square pipe (4), square pipe (4) lower extreme fixedly connected with rather than communicating clearance box (10) in inside, just clearance box (10) are by box mouth (101) and box body (102) constitution, sealed sliding connection has clearance frame (6) in box mouth (101), install the drive arrangement who drives its removal on clearance frame (6), one side that clearance frame (6) is close to case (2) is laminated on the lateral wall of filter screen (5);
the driving device comprises a telescopic airbag (7) fixedly connected to the upper end of a cleaning frame (6), the upper end of the telescopic airbag (7) is fixedly connected to the inner top of a square pipe (4), an air storage bag (16) is fixedly arranged on the square pipe (4), the telescopic airbag (7) is communicated with the air storage bag (16) through an air inlet pipe (17), a pressure release valve is arranged in the air inlet pipe (17), an arc-shaped groove is formed in the side wall of the square pipe (4), and an exhaust mechanism for exhausting the air storage bag (16) is arranged in the arc-shaped groove;
the exhaust mechanism comprises a water wheel (11) which is rotationally connected in an arc-shaped groove, the water wheel (11) consists of a plurality of blades (111) and a magnetic rotating shaft (112), a strip-shaped groove (12) is formed in the side wall of the square tube (4), a magnetic sliding plug (13) is connected in the strip-shaped groove (12) in a sealing sliding manner, a one-way air inlet hole (14) is formed in the inner wall of the strip-shaped groove (12), a one-way air outlet hole (15) is formed in the side wall of the magnetic sliding plug (13), and the strip-shaped groove (12) is communicated with an air storage bag (16) through an exhaust pipe (8).
2. The low-temperature butterfly valve with the detachable antirust built-in filter screen according to claim 1, wherein the caliber of the box body (102) is larger than that of the box opening (101), and the box body (102) and the box opening (101) are of square structures.
3. The low-temperature butterfly valve with the detachable antirust built-in filter screen according to claim 1, wherein an air outlet pipe (9) communicated with the telescopic air bag (7) is arranged on the cleaning frame (6), and the pipe diameter of the air outlet pipe (9) is smaller than that of the air inlet pipe (17).
4. The low-temperature butterfly valve with the detachable antirust built-in filter screen according to claim 1, wherein the gas storage bag (16) and the telescopic air bag (7) are made of rubber materials, a valve core (2) is arranged in the valve body (1), and a valve rod (3) is arranged on the valve core (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111374353.4A CN114151552B (en) | 2021-11-19 | 2021-11-19 | Low-temperature butterfly valve with detachable antirust built-in filter screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111374353.4A CN114151552B (en) | 2021-11-19 | 2021-11-19 | Low-temperature butterfly valve with detachable antirust built-in filter screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114151552A CN114151552A (en) | 2022-03-08 |
| CN114151552B true CN114151552B (en) | 2023-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111374353.4A Active CN114151552B (en) | 2021-11-19 | 2021-11-19 | Low-temperature butterfly valve with detachable antirust built-in filter screen |
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| Country | Link |
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| CN (1) | CN114151552B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797257A (en) * | 2022-04-30 | 2022-07-29 | 绍兴砩特环保科技有限公司 | High-precision microporous filter |
| CN118654129A (en) * | 2024-05-31 | 2024-09-17 | 江苏苏盐阀门机械有限公司 | A butterfly valve with sealing protection structure |
| CN119042184B (en) * | 2024-10-16 | 2025-03-14 | 普斐特油气工程(江苏)股份有限公司 | A high stability impact resistant hydraulic throttle valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210123019U (en) * | 2019-05-21 | 2020-03-03 | 浙江苏正自控阀门有限公司 | Pneumatic butterfly valve |
| CN111686529A (en) * | 2020-06-26 | 2020-09-22 | 陈辉辉 | Dust removal device for boiler tail gas |
| CN212745077U (en) * | 2020-07-28 | 2021-03-19 | 重庆捷阀阀业有限公司 | Three-eccentric butterfly valve with detachable rust-proof built-in filter screen |
| CN213393587U (en) * | 2020-09-17 | 2021-06-08 | 天津市金蝶阀门制造有限公司 | Prevent blockking up effectual butterfly valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7552906B2 (en) * | 2006-07-17 | 2009-06-30 | Rain Bird Corporation | Valve assembly |
-
2021
- 2021-11-19 CN CN202111374353.4A patent/CN114151552B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210123019U (en) * | 2019-05-21 | 2020-03-03 | 浙江苏正自控阀门有限公司 | Pneumatic butterfly valve |
| CN111686529A (en) * | 2020-06-26 | 2020-09-22 | 陈辉辉 | Dust removal device for boiler tail gas |
| CN212745077U (en) * | 2020-07-28 | 2021-03-19 | 重庆捷阀阀业有限公司 | Three-eccentric butterfly valve with detachable rust-proof built-in filter screen |
| CN213393587U (en) * | 2020-09-17 | 2021-06-08 | 天津市金蝶阀门制造有限公司 | Prevent blockking up effectual butterfly valve |
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| Publication number | Publication date |
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| CN114151552A (en) | 2022-03-08 |
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