CN108799531A - A kind of aperture-type air register - Google Patents
A kind of aperture-type air register Download PDFInfo
- Publication number
- CN108799531A CN108799531A CN201810709309.6A CN201810709309A CN108799531A CN 108799531 A CN108799531 A CN 108799531A CN 201810709309 A CN201810709309 A CN 201810709309A CN 108799531 A CN108799531 A CN 108799531A
- Authority
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- China
- Prior art keywords
- blade
- arc shaped
- gear
- shaped blade
- adjustment disk
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims description 31
- 238000009423 ventilation Methods 0.000 claims description 7
- 238000009304 pastoral farming Methods 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding 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
- 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
- F16K3/03—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 a closure member in the form of an iris-diaphragm
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Flow Control Members (AREA)
Abstract
The present invention provides a kind of aperture-type air register, the present invention includes left plate, blade locating ring, arc shaped blade, gear adjustment disk, wind-guiding head, body housing, executing agency;Arc shaped blade is not necessarily to axial rotation, and with pipeline inner wall grazing, stuck will not occur for arc shaped blade, to relax the gap between arc shaped blade and pipeline inner wall;Arc shaped blade is brought together at wind-guiding head, and arc shaped blade one end is embedded into the annular groove of wind-guiding head, is fitted into closely, is laminated closely between arc shaped blade, can effectively reduce inleakage;Blade is support jointly in leeward, the ability for making arc shaped blade be provided with fabulous anti-high wind pressure impact by more rhizome stalks and annular groove;It is synchronouss with the rotation radian of the arc shaped blade in air register by being equipped with pointer and dial on gearcase, it can intuitively reflect that air register blade closes up or the degree of diastole, accomplish the air quantity in precisely adjusting pipeline.
Description
Technical field
The present invention relates to air quantity regulation technology fields, and in particular to a kind of aperture-type air register.
Background technology
Air register is also volume damper, is widely used in the places such as industrial premises, civil buildings, ocean platform, ship
Ventilation tubing in, be essential end fitting in air conditioning and air purification process.Air register both can be used for adjusting
The air quantity for saving branch pipe, the mixing that can be used for fresh air and return air are adjusted.Common air register structure such as Fig. 1 institutes currently on the market
Show, by bolt or the method for welding on a circular shaft, fixes one or more pieces circular blades, pass through outside regulating mechanism
Rotation drives shaft rotation, so that blade is changed the mode of angle in pipeline, to change the draught area in pipeline, to change
The air force flowed through in pipeline.But such air register has the following problems in actual use:
One, gap is larger between blade and pipeline inner wall, causes opposite inleakage very big(General meeting >=8~10% after testing), from
And ventilation cannot be blocked well.The problem Producing reason is this because air register blade rotates smooth in pipeline, just must
Must there are gaps between blade and pipeline inner wall, in addition manufacture the location tolerance in engineering, can all allow blade can not possibly be with
Tight fit between pipeline inner wall.
Two, the anti-high wind pressure energy force difference of blade.The blade of air register generally selects the thin plate of 1-2mm, fixes on the rotating shaft
Area it is smaller, so in actual fabrication can not other structures reinforce support blade.Inside the pipeline of high wind pressure, air register
Blade be easy to be deformed, to which bigger increases inleakage.
Three, when general air register is by adjusting the executing agency of outside, but adjusting the executing agency of outside, because can not
The accurate angle for knowing that blade is gone to inside pipeline cannot accomplish precisely to adjust so it is also random, not quantifiable to adjust angle
Save air quantity.
Invention content
In order to solve the problems in the existing technology, the present invention provides a kind of aperture-type air registers, have and precisely adjust
Section air quantity effectively reduces the characteristics of inleakage.
Technical proposal that the invention solves the above-mentioned problems is:A kind of aperture-type air register, including the positioning of left plate, blade
Circle, arc shaped blade, gear adjustment disk, wind-guiding head, body housing, executing agency;
Body housing lower face is equipped with leeward pipe fitting, and leeward pipe fitting is connected to body housing;Body housing upper surface is fixed
There are bracing ring, bracing ring to be equipped with gear adjustment disk, gear adjustment disk lower face is equipped with face gear, and gear adjusts disk center
It is equipped with wind-guiding head at position, is connected by more rhizome stalks between gear adjustment disk and wind-guiding head;
Gear adjustment disk is equipped with multiple guide grooves, and guide groove surrounds gear adjustment disk annular array;Leaf is equipped with above gear adjustment disk
Piece locating ring, blade locating ring are fixedly linked with body housing;
Multiple arcs blade is equipped between gear adjustment disk and blade locating ring, arc shaped blade is with equal angular successively folded array
It forms, opposite can be slided between two neighboring arc shaped blade, arc shaped blade is connected by riveting pin with gear adjustment disk, arc
Shape blade is fixedly linked with blade locating ring;
Body housing is equipped with executing agency, and executing agency includes transmission gear, and transmission gear is engaged with face gear.
Further, face gear is partial gear, and face gear institute is 120 ° -150 ° to central angle.
Further, stalk surrounds gear adjustment disk central axis annular array.
Further, among guide groove it is rectangle, both ends are semicircle.
Further, wind-guiding head is equipped with annular groove, and arc shaped blade both ends are semicircle, adjusts ventilation quantity and reduces
When, arc shaped blade closes up, in one end insertion annular groove of arc shaped blade.
Further, executing agency further includes handwheel, gearcase, dial, transmission shaft, transmission shaft one end and handwheel phase
Even, the other end is connected across body housing with transmission gear, and gearcase is fixed on transmission shaft, and gearcase is located at body housing
Outside;Transmission shaft, transmission gear, handwheel coaxial arrangement, gearcase central axis and center transmission shaft axis are misaligned, on gearcase
Equipped with dial, dial, which is equipped with, adjusts scale, and it is 180 ° to central angle to adjust scale institute, adjusts scale along dial circumference
Direction is uniformly distributed, and gearcase center position is equipped with pointer, is rotatedly connected between pointer and gearcase.
Further, left plate upper surface is equipped with windward pipe fitting, left plate and upcast ventilation pipe fittings, left plate and sheet
Body case is connected, the tight left plate of blade locating ring.
The present invention has advantageous effect:
(1)Gap is larger between solving the blade and pipeline inner wall of existing air register in the present invention, causes opposite inleakage big
The problem of;Arc shaped blade is not necessarily to axial rotation, and with pipeline inner wall grazing, stuck will not occur for arc shaped blade, to relax arc
Gap between blade and pipeline inner wall;Arc shaped blade only does the variation of angle on pipe section, is not in and pipeline inner wall
Stuck phenomenon;Arc shaped blade is brought together at wind-guiding head, and arc shaped blade one end is embedded into the annular groove of wind-guiding head, is fitted into tight
It is close, it is laminated closely between arc shaped blade, can effectively reduce inleakage, opposite inleakage < 1% is measured through experiment;
(2)The present invention solves the anti-high wind pressure energy force difference of existing blade, and yielding, the blade deformed, which can greatly increase, to leak out
Amount, or even the problem of air register due adjustment effect cannot be played;Pass through the more rhizome stalks and wind-guiding head on gear adjustment disk
The annular groove of upper fixed arc shaped blade supports blade jointly together, in leeward, and arc shaped blade is made to be provided with fabulous anti-height
The ability of wind pressure impact has prevented largely to leak out caused by arc shaped blade deforms;Solves the anti-high wind pressure of existing arc shaped blade
Energy force difference, yielding, the arc shaped blade deformed can greatly increase inleakage, or even cannot play the due adjusting of air register
The problem of effect;
(3)It is inaccurate that the present invention solves the problems, such as that general air register air quantity is adjusted;By being equipped with pointer and quarter on gearcase
Scale, it is synchronous with the rotation radian of the arc shaped blade in air register, it can intuitively reflect that air register blade closes up or the degree of diastole,
Accomplish precisely to adjust the air quantity in pipeline.
Description of the drawings
Fig. 1 is explosive view of the present invention.
Fig. 2 is sectional view of the present invention.
Fig. 3 is gear adjustment disk structural schematic diagram of the present invention.
Fig. 4 is arc shaped blade of the present invention and gear adjustment disk installation diagram.
Fig. 5 is wind-guiding header structure schematic diagram of the present invention.
Fig. 6 is arc shaped blade structural schematic diagram of the present invention.
Fig. 7 is blade locating ring front view of the present invention.
Fig. 8 is blade locating ring sectional view of the present invention.
Fig. 9 is gear box structure schematic diagram of the present invention.
In figure:1- left plates, 2- blade locating rings, 3- arc shaped blades, 4- gear adjustment disks, 5- wind-guiding heads, 6- sheets are external
Shell, 7- executing agencies, 8- windward pipe fittings, 9- leeward pipe fittings, 10- bracing rings, 12- face gears, 13- stalks, 14- annulars
Groove, 15- guide grooves, 16- transmission gears, 17- handwheels, 18- gearcases, 19- dials, 20- transmission shafts, 21- adjust scale,
22- pointers.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific implementation mode the present invention is further illustrated.
A kind of aperture-type air register, including left plate 1, blade locating ring 2, arc shaped blade 3, gear adjustment disk 4, wind-guiding head
5, body housing 6, executing agency 7;
Windward pipe fitting 8, leeward pipe fitting 9, the compression moulding on hydraulic press of body housing 6;
6 lower face of body housing is equipped with leeward pipe fitting 9, and leeward pipe fitting 9 is connected to body housing 6;6 upper surface of body housing
It is welded with bracing ring 10, bracing ring 10 is equipped with gear adjustment disk 4, and bracing ring 10 plays the role of supporting gear adjustment disk 4;Tooth
Take turns adjustment disk 4 lower face and be equipped with face gear 12, face gear 12 is partial gear, face gear 12 be to central angle
120°;4 center position of gear adjustment disk is equipped with wind-guiding head 5, passes through three rhizome stalks 13 between gear adjustment disk 4 and wind-guiding head 5
It is connected, wind-guiding head 5 is equipped with annular groove 14, and stalk 13 surrounds 4 central axis annular array of gear adjustment disk;Stalk 13 and ring
Connected in star 14 supports arc shaped blade 3 in leeward well, the ability for making arc shaped blade 3 have anti-high wind pressure impact, will not
It deforms, has prevented blade and leaked out caused by not being resistant to high wind pressure deformation.
Gear adjustment disk 4 is equipped with multiple guide grooves 15, and guide groove 15 is among 4 annular array of gear adjustment disk, guide groove 15
For rectangle, both ends are semicircle;4 top of gear adjustment disk is equipped with blade locating ring 2, and blade locating ring 2 is welded with body housing 6
It is connected;
Multiple arcs blade 3 is equipped between gear adjustment disk 4 and blade locating ring 2, arc shaped blade 3 is overlapped successively with equal angular
It arranges, opposite can be slided between two neighboring arc shaped blade 3, arc shaped blade 3, which passes through, rivets pin and gear adjustment disk 4
It is connected, arc shaped blade 3 is fixedly linked with blade locating ring 2;3 both ends of arc shaped blade are semicircle, when adjusting ventilation quantity reduction,
Arc shaped blade 3 closes up, in one end insertion annular groove 14 of arc shaped blade 3;
1 upper surface of left plate is equipped with windward pipe fitting 8, and left plate 1 is connected to windward pipe fitting 8, left plate 1 and body housing 6
It is connected, blade locating ring 2 pushes against left plate 1;
Body housing 6 is equipped with executing agency 7, and executing agency 7 includes transmission gear 16, handwheel 17, gearcase 18, dial
19, transmission shaft 20,20 one end of transmission shaft are connected with handwheel 17, and the other end is connected across body housing 6 with transmission gear 16, transmission
Gear 16 is bevel gear, and transmission gear 16 is engaged with face gear 12;Gearcase 18 is fixed on transmission shaft 20, gearcase 18
In outside body housing 6;Transmission shaft 20, transmission gear 16, handwheel 17 are coaxially disposed, in 18 central axis of gearcase and transmission shaft 20
Mandrel line is misaligned, gearcase 18 be equipped with dial 19, dial 19 be equipped with adjust scale 21, adjust scale 21 to circle
Heart angle is 180 °, adjusts scale 21 and is uniformly distributed along 19 circumferencial direction of dial, and 18 center position of gearcase is equipped with pointer 22,
It is rotatedly connected between pointer 22 and gearcase 18.With the rotation of handwheel 17, pointer 22 is also rotating, and is carved on indication dial disc 19
The variation of degree, to direct, image, intuitive reflection air register blade closes up or the degree of diastole, accomplishes precisely to adjust pipeline
Interior air quantity.
When rotation hand wheel 17, transmission gear 16 is engaged with face gear 12, and band moving gear adjustment disk 114 rotates, arc-shaped leaf
The pin that piece 3 is mounted in guide groove 15 can drive arc shaped blade 3 to move, and change the radian that arc shaped blade 3 arranges, gradually to wind-guiding
First 5 draw close, and the common movement of all arc shaped blades 3 causes the circle that arc shaped blade 3 surrounds to become smaller constantly, until all blades close
Hold together at wind-guiding head 5,3 inner edge of all arc shaped blades is embedded in annular groove 14, is closed up closely, is not stayed a gap, maximum
Limit reduces inleakage, through experiment, opposite inleakage < 1%;
Many other changes and remodeling can be made by not departing from the spirit and scope of the present invention.It should be appreciated that the present invention is not limited to
Specific embodiment, the scope of the present invention are defined by the following claims.
Claims (7)
1. a kind of aperture-type air register, which is characterized in that including left plate, blade locating ring, arc shaped blade, gear adjustment disk,
Wind-guiding head, body housing, executing agency;
Body housing lower face is equipped with leeward pipe fitting, and leeward pipe fitting is connected to body housing;Body housing upper surface is fixed
There are bracing ring, bracing ring to be equipped with gear adjustment disk, gear adjustment disk lower face is equipped with face gear, and gear adjusts disk center
It is equipped with wind-guiding head at position, is connected by more rhizome stalks between gear adjustment disk and wind-guiding head;
Gear adjustment disk is equipped with multiple guide grooves, and guide groove surrounds gear adjustment disk annular array;Leaf is equipped with above gear adjustment disk
Piece locating ring, blade locating ring are fixedly linked with body housing;
Multiple arcs blade is equipped between gear adjustment disk and blade locating ring, arc shaped blade is with equal angular successively folded array
It forms, opposite can be slided between two neighboring arc shaped blade, arc shaped blade is connected by riveting pin with gear adjustment disk, arc
Shape blade is fixedly linked with blade locating ring;
Body housing is equipped with executing agency, and executing agency includes transmission gear, and transmission gear is engaged with face gear.
2. a kind of aperture-type air register as described in claim 1, which is characterized in that the executing agency further includes handwheel, tooth
Box, dial, transmission shaft are taken turns, transmission shaft one end is connected with handwheel, and the other end is connected across body housing with transmission gear, gear
Box is fixed on transmission shaft, and gearcase is located at outside body housing;Transmission shaft, transmission gear, handwheel coaxial arrangement, gearcase center
Axis and center transmission shaft axis are misaligned, and gearcase is equipped with dial, and dial, which is equipped with, adjusts scale, adjusts scale institute
It is 180 ° to central angle, adjusts scale and be uniformly distributed along dial circumferencial direction, gearcase center position is equipped with pointer, pointer
It is rotatedly connected between gearcase.
3. a kind of aperture-type air register as claimed in claim 1 or 2, which is characterized in that the left plate upper surface is equipped with upper
Blast connection, left plate and upcast ventilation pipe fittings, left plate are connected with body housing, and blade locating ring pushes against left plate.
4. a kind of aperture-type air register as claimed in claim 1 or 2, which is characterized in that the face gear is incomplete tooth
Wheel, face gear institute are 120 ° -150 ° to central angle.
5. a kind of aperture-type air register as described in claim 1, which is characterized in that the stalk adjusts disk center around gear
Axis annular array.
6. a kind of aperture-type air register as claimed in claim 1 or 2, which is characterized in that be rectangle, both ends among the guide groove
For semicircle.
7. a kind of aperture-type air register as claimed in claim 1 or 2, which is characterized in that it is recessed that the wind-guiding head is equipped with annular
Slot, arc shaped blade both ends are semicircle, and when adjusting ventilation quantity reduction, arc shaped blade closes up, one end embedded rings of arc shaped blade
In connected in star.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810709309.6A CN108799531A (en) | 2018-07-02 | 2018-07-02 | A kind of aperture-type air register |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810709309.6A CN108799531A (en) | 2018-07-02 | 2018-07-02 | A kind of aperture-type air register |
Publications (1)
Publication Number | Publication Date |
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CN108799531A true CN108799531A (en) | 2018-11-13 |
Family
ID=64072795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201810709309.6A Pending CN108799531A (en) | 2018-07-02 | 2018-07-02 | A kind of aperture-type air register |
Country Status (1)
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CN (1) | CN108799531A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109878691A (en) * | 2019-02-18 | 2019-06-14 | 中国电子科技集团公司第三十八研究所 | A kind of means of deflation and aerostatics of regulating flow quantity |
CN110894882A (en) * | 2019-09-19 | 2020-03-20 | 北京西门子西伯乐斯电子有限公司 | Regulating valve |
CN112412729A (en) * | 2020-12-04 | 2021-02-26 | 河南玄龟智能科技研究院有限公司 | Plunger urea pump |
CN113483107A (en) * | 2021-05-31 | 2021-10-08 | 李丽平 | Automatic regulating device for water pressure sudden increase in water pump |
CN114228847A (en) * | 2021-12-27 | 2022-03-25 | 上海智能网联汽车技术中心有限公司 | Active opening and closing type automobile tail wing |
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GB1319886A (en) * | 1970-11-10 | 1973-06-13 | Rheinstahl Huettenwerke Ag | Shutoff and regulating slide valve |
JP3037175U (en) * | 1996-10-24 | 1997-05-06 | 株式会社清水合金製作所 | Valve position gauge |
CN205780973U (en) * | 2016-07-05 | 2016-12-07 | 湖南科技大学 | A kind of electric and pneumatic volume damper of Wind ring type |
CN107076317A (en) * | 2014-09-30 | 2017-08-18 | 日本电产科宝株式会社 | Volume control device and vehicle |
US20170292616A1 (en) * | 2014-09-19 | 2017-10-12 | Atlas Copco Airpower, Naamloze Vennootschap | Inlet valve for a compressor |
CN206830827U (en) * | 2017-05-16 | 2018-01-02 | 宁波田湖阀门科技有限公司 | Aperture-type flow control valve |
CN207049351U (en) * | 2017-07-20 | 2018-02-27 | 深圳市圣地保人防有限公司 | A kind of electric closed valve door |
CN208919365U (en) * | 2018-07-02 | 2019-05-31 | 江苏永胜海洋工程有限公司 | A kind of aperture-type air register |
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2018
- 2018-07-02 CN CN201810709309.6A patent/CN108799531A/en active Pending
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GB1319886A (en) * | 1970-11-10 | 1973-06-13 | Rheinstahl Huettenwerke Ag | Shutoff and regulating slide valve |
JP3037175U (en) * | 1996-10-24 | 1997-05-06 | 株式会社清水合金製作所 | Valve position gauge |
US20170292616A1 (en) * | 2014-09-19 | 2017-10-12 | Atlas Copco Airpower, Naamloze Vennootschap | Inlet valve for a compressor |
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CN207049351U (en) * | 2017-07-20 | 2018-02-27 | 深圳市圣地保人防有限公司 | A kind of electric closed valve door |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109878691A (en) * | 2019-02-18 | 2019-06-14 | 中国电子科技集团公司第三十八研究所 | A kind of means of deflation and aerostatics of regulating flow quantity |
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CN110894882B (en) * | 2019-09-19 | 2024-10-01 | 北京西门子西伯乐斯电子有限公司 | Regulating valve |
CN112412729A (en) * | 2020-12-04 | 2021-02-26 | 河南玄龟智能科技研究院有限公司 | Plunger urea pump |
CN113483107A (en) * | 2021-05-31 | 2021-10-08 | 李丽平 | Automatic regulating device for water pressure sudden increase in water pump |
CN113483107B (en) * | 2021-05-31 | 2023-11-24 | 国网(天津)综合能源服务有限公司 | Automatic regulating device for water pump internal water pressure sudden increase |
CN114228847A (en) * | 2021-12-27 | 2022-03-25 | 上海智能网联汽车技术中心有限公司 | Active opening and closing type automobile tail wing |
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