CN208765175U - A kind of split type fresh air system - Google Patents
A kind of split type fresh air system Download PDFInfo
- Publication number
- CN208765175U CN208765175U CN201821061100.5U CN201821061100U CN208765175U CN 208765175 U CN208765175 U CN 208765175U CN 201821061100 U CN201821061100 U CN 201821061100U CN 208765175 U CN208765175 U CN 208765175U
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- China
- Prior art keywords
- fixedly connected
- air
- installs case
- exhausting duct
- storage box
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- 244000309464 bull Species 0.000 claims abstract description 30
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 238000003860 storage Methods 0.000 claims description 31
- 241000883990 Flabellum Species 0.000 claims description 21
- 238000009423 ventilation Methods 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 3
- 238000009434 installation Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002950 deficient Effects 0.000 abstract description 3
- 238000004887 air purification Methods 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 230000000505 pernicious effect Effects 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 208000001840 Dandruff Diseases 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Ventilation (AREA)
Abstract
The utility model belongs to technical field of air purification, specially a kind of split type fresh air system, including air-exhausting duct and blast pipe, air-exhausting duct is placed horizontally at the top of blast pipe, the bottom of the air-exhausting duct is fixedly connected with the top of blast pipe by symmetrically arranged two fixed links, one end of the air-exhausting duct is communicated with the first installs case, the first driving motor is fixedly connected at the top of first installs case, the first worm screw is fixedly connected on the output shaft of first driving motor, first worm screw runs through the top of the first installs case and extends internally, first support bar is fixedly connected in first installs case, the first bull stick is rotatably connected in the first support bar, the utility model passes through the setting of filter mechanism and counterflow-preventing mechanism, keep apparatus structure simple, ideal purification effect, it is convenient that filtering and purifying is replaced And cleaning, compensate for the defective of existing split type fresh air system.
Description
Technical field
The utility model belongs to technical field of air purification, specially a kind of split type fresh air system.
Background technique
Now, more and more people recognize that the importance of indoor environment, Yao Gaishan room air pollution improve Interior Space
The most directly effective method of makings amount is exactly to improve the circulation of room air, accelerates the discharge of indoor pollution air, accelerating chamber
The injection of outer fresh air, fresh air system are widely used use.
But structure is complicated for existing split type fresh air system, clean-up effect is undesirable, it has not been convenient to filtering and purifying
Dismounting and change is carried out, there are certain defectives.
Utility model content
It is mentioned above in the background art to solve the purpose of this utility model is to provide a kind of split type fresh air system
Problem.
To achieve the above object, the utility model provides the following technical solutions:
A kind of split type fresh air system, including air-exhausting duct and blast pipe, air-exhausting duct are placed horizontally at the top of blast pipe, institute
The bottom for stating air-exhausting duct is fixedly connected with the top of blast pipe by symmetrically arranged two fixed links, one end of the air-exhausting duct
It is communicated with the first installs case, the first driving motor, first driving motor are fixedly connected at the top of first installs case
Output shaft on be fixedly connected with the first worm screw, first worm screw through the first installs case top and extend internally, it is described
It is fixedly connected with first support bar in first installs case, is rotatably connected to the first bull stick in the first support bar, described first
One end fixing sleeve of bull stick is connected to the first gear being meshed with the first worm screw, the one end of first bull stick far from first gear
It is fixedly connected with air draft flabellum, the air-exhausting duct is communicated with the first storage box far from one end of the first installs case, and described first sets
It is fixedly connected with symmetrically arranged two slide bars in object case, sliding block is slidably connected on the slide bar, two sliding blocks are opposite
One end be fixedly connected by upright bar, the upright bar close to the side of air-exhausting duct be fixedly connected with it is symmetrically arranged two support
Block, two supporting blocks are fixedly connected by anti-reverse plate, and the slide bar is fixedly connected with strut far from one end of anti-reverse plate, institute
State strut to be fixedly connected with the inner wall of the first storage box, be arranged with spring on the slide bar, the both ends of the spring respectively with cunning
Block is fixedly connected with strut, and the air-exhausting duct is communicated with the second storage box, second glove close to one end of the first installs case
Sliding is inserted with filter frame in case, and the filter frame runs through the interior bottom of the second storage box and extends outwardly, and the filter frame prolongs
The one end stretched is fixedly connected with fixed block, and the both ends of the fixed block are equipped with screw thread mouth, and the screw thread mouth internal screw thread is connected with lock
Tight screw, second storage box are equipped with thread groove corresponding with lock-screw, are fixedly connected in the filter frame symmetrical
Two pairs of sliding sleeves being arranged slidably connect the first filter layer and the second filter layer in two sliding sleeves of a pair together respectively, described
First installs case is fixedly plugged with ventilation duct far from the side of blast pipe with the second storage box, and the blast pipe is set far from second
One end of object case is communicated with the second installs case, is fixedly connected with the second driving motor at the top of second installs case, and described
It is fixedly connected with the second worm screw on the output shaft of two driving motors, second worm screw is through the top of the second installs case and inside
Extend, is fixedly connected with second support bar in second installs case, the second bull stick, institute are rotatablely connected in the second support bar
One end fixing sleeve for stating the second bull stick is connected to the second gear being meshed with the second worm screw, and second bull stick is far from second gear
One end be fixedly connected with air inlet flabellum, the fixation of the side of first storage box and the second installs case far from air-exhausting duct plugs
There is trapezoidal ventilation duct.
Preferably, sliding is inserted with filter screen in the trapezoidal ventilation duct.
Preferably, the filter frame is gelatinization cotton coarse filtration frame.
Preferably, first filter layer is photocatalytic active carbon adsorption layer.
Preferably, second filter layer is HEPA filter layer.
Preferably, being fixedly connected with knob at the top of the fixed block.
Compared with prior art, the utility model has the beneficial effects that working as user when in use, it is first turned on the first drive
The power supply of dynamic motor, the output shaft of the first driving motor drive the rotation of the first worm screw, and the first worm screw drives phase while rotation
The first gear of engagement rotates, and first gear drives the first bar rotation, mistake of first bull stick in rotation in the course of rotation
In journey drive air draft flabellum indoor pernicious gas is discharged, air draft flabellum while air draft, at this time sliding block on slide bar to
The direction of trapezoidal ventilation duct is slided, and the elasticity of spring is squeezed contraction at this time, while support rod drives retaining board from air-exhausting duct
Nozzle at the direction slided to sliding block it is mobile, while air draft flabellum stops working, spring will be prevented using elastic anchorage force
Inverse plate is pushed at nozzle automatically, closes to air-exhausting duct, prevents outdoor pernicious gas from flowing backward, and pollutes indoor fresh sky
Gas is opened the second driving motor, the output shaft of the second driving motor drive second simultaneously when air draft flabellum is while work
Worm screw rotation, the second worm screw drive the second gear rotation being meshed while rotation, and second gear is in the course of rotation
The second bar rotation is driven, the second bull stick drives air inlet flabellum that outdoor fresh air is discharged into interior in the course of rotation,
Outdoor fresh air first passes around blast pipe during being discharged into and discharges into the second storage box, then by the second storage box
Multi-filtering mechanism filtering heel row enter interior, while when needing replacing filter frame or cleaning, first unscrewing lock-screw, then
Filter frame is extracted out out of socket using knob, then the first filter layer and the second filter layer are extracted out out of sliding sleeve, is replaced
Or cleaning, the utility model pass through the setting of filter mechanism and counterflow-preventing mechanism, keep apparatus structure simple, ideal purification effect,
It is convenient that filtering and purifying is replaced and cleaned, compensate for the defective of existing split type fresh air system.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is structural schematic diagram at the A in this Fig. 1；
Fig. 3 is structural schematic diagram at the B in this Fig. 1.
In figure: 1- air-exhausting duct, 2- blast pipe, 3- fixed link, the first installs case of 4-, the first driving motor of 5-, the first snail of 6-
Bar, 7- first support bar, the first bull stick of 8-, 9- first gear, 10- air draft flabellum, the first storage box of 11-, 12- slide bar, 13-
Sliding block, 14- upright bar, 15- supporting block, the anti-reverse plate of 16-, 17- strut, 18- spring, the second storage box of 19-, 20- filter frame, 21-
Fixed block, 22- lock-screw, 23- sliding sleeve, the first filter layer of 24-, the second filter layer of 25-, 26- ventilation duct, 27- second are installed
Case, the second driving motor of 28-, the second worm screw of 29-, 30- second support bar, the second bull stick of 31-, 32- second gear, 33- air inlet
Flabellum, the trapezoidal ventilation duct of 34-, 35- filter screen, 36- knob.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of split type fresh air system, including air-exhausting duct 1
With blast pipe 2, air-exhausting duct 1 is placed horizontally at the top of blast pipe 2, and the bottom of air-exhausting duct 1 and the top of blast pipe 2 pass through symmetrical
Two fixed links 3 being arranged are fixedly connected, and one end of air-exhausting duct 1 is communicated with the first installs case 4, for air draft mechanism to be arranged, the
The top of one installs case 4 is fixedly connected with the first driving motor 5, for driving the rotation of the first worm screw 6, the first driving motor 5
The first worm screw 6 is fixedly connected on output shaft, for driving the first gear 9 being meshed to rotate, the first worm screw 6 is through the first peace
The top of vanning 4 simultaneously extends internally, and is fixedly connected with first support bar 7 in the first installs case 4, is used to support the first bull stick 8, the
Be rotatably connected to the first bull stick 8 on one support rod 7, be used to support first gear 9, one end fixing sleeve of the first bull stick 8 be connected to
The first gear 9 that first worm screw 6 is meshed, for drive air draft flabellum 10 rotate, the first bull stick 8 far from first gear 9 one
End is fixedly connected with air draft flabellum 10, for indoor pernicious gas to be discharged, the one end of air-exhausting duct 1 far from the first installs case 4
It is communicated with the first storage box 11, for counterflow-preventing mechanism to be arranged, symmetrically arranged two are fixedly connected in the first storage box 11
Slide bar 12 is used to support sliding block 13, sliding block 13 is slidably connected on slide bar 12, is used to support upright bar 14, and two sliding blocks 13 are opposite
One end be fixedly connected by upright bar 14, upright bar 14 is fixedly connected with symmetrically arranged two supports close to the side of air-exhausting duct 1
Block 15, is used to support anti-reverse plate 16, and two supporting blocks 15 are fixedly connected by anti-reverse plate 16, are stopped working for air draft flabellum 10
In the case where, anti-reverse plate 16 closes exhaust duct under the resilient support effect of spring 18, prevents outdoor air from falling
It fills, pollutes indoor fresh air, slide bar 12 is fixedly connected with strut 17 far from one end of anti-reverse plate 16, and strut 17 is set with first
The inner wall of object case 11 is fixedly connected, and is used to support slide bar 12, is arranged with spring 18 on slide bar 12, the both ends of spring 18 respectively with cunning
Block 13 is fixedly connected with strut 17, and for playing the role of resilient support to sliding block 13, air-exhausting duct 1 is close to the first installs case 4
One end is communicated with the second storage box 19, and for filter mechanism to be arranged, sliding is inserted with filter frame 20 in the second storage box 19, is used for
Air filtering and the first filter layer 24 of setting and the second filter layer 25 are crossed, filter frame 20 runs through the interior bottom of the second storage box 19 simultaneously
Extend outwardly, one end that filter frame 20 extends is fixedly connected with fixed block 21, is used to support filter frame 20, the both ends of fixed block 21
Equipped with screw thread mouth, screw thread mouth internal screw thread is connected with lock-screw 22, and the second storage box 19 is equipped with corresponding with lock-screw 22
Thread groove, it is easy to disassemble for filter frame 20 to be fixed, symmetrically arranged two pairs of sliding sleeves are fixedly connected in filter frame 20
23, for the first filter layer 24 and the second filter layer 25 of being slidably connected, with the is slidably connected in two sliding sleeves 23 of a pair respectively
One filter layer 24 and the second filter layer 25, the first installs case 4 and the second side of the storage box 19 far from blast pipe 2 are fixed to insert
Equipped with ventilation duct 26, blast pipe 2 is communicated with the second installs case 27 far from one end of the second storage box 19, for air inlet fan to be arranged
Structure, the top of the second installs case 27 are fixedly connected with the second driving motor 28, for driving the rotation of the second worm screw 29, the second driving
The second worm screw 29 is fixedly connected on the output shaft of motor 28, for driving the second gear 32 that is meshed to rotate, the second worm screw 29
Through the second installs case 27 top and extend internally, be fixedly connected with second support bar 30 in the second installs case 27, for branch
The second bull stick 31 is supportted, the second bull stick 31 is rotatablely connected in second support bar 30, is used to support air inlet flabellum 33, the second bull stick 31
One end fixing sleeve is connected to the second gear 32 being meshed with the second worm screw 29, for driving the rotation of the second bull stick 31, the second bull stick
31 one end far from second gear 32 are fixedly connected with air inlet flabellum 33, for by outdoor fresh air suction chamber, first
Storage box 11 and the second side of the installs case 27 far from air-exhausting duct 1 are fixedly plugged with trapezoidal ventilation duct 34；Further, terraced
Sliding is inserted with filter screen 35 in shape ventilation duct 34, for carrying out preliminary filtering to the air of sucking；Further, it filters
Frame 20 is gelatinization cotton coarse filtration frame, can cross 20 microns or more in air filtering of floating dust, as float hair, pollen, dandruff of pet is equivalent
Rate is up to 92% or more；Further, the first filter layer 24 is photocatalytic active carbon adsorption layer, can to chemical gas and peculiar smell into
Row absorption；Further, the second filter layer 25 is HEPA filter layer, can be carried out to germ, smog, pellet
Filter；Further, the top of fixed block 21 is fixedly connected with knob 36, dismantles for convenient to filter frame 20.
Working principle: when user when in use, be first turned on the power supply of the first driving motor 5, the first driving motor 5
Output shaft drives the rotation of the first worm screw 6, and the first worm screw 6 drives the first gear 9 being meshed to rotate while rotation, the first tooth
Wheel 9 drives the first bull stick 8 to rotate in the course of rotation, and the first bull stick 8 drives air draft flabellum 10 by room in the course of rotation
Interior pernicious gas discharge, for air draft flabellum 10 while air draft, sliding block 13 is on slide bar 12 to trapezoidal ventilation duct 34 at this time
Direction is slided, and the elasticity of spring 18 is squeezed contraction at this time, while upright bar 14 drives anti-reverse plate 16 from the nozzle of air-exhausting duct 1
The direction slided to sliding block 13 is mobile, and while air draft flabellum 10 stops working, spring 18 will be anti-reverse using elastic anchorage force
Plate 16 is pushed at nozzle automatically, closes to air-exhausting duct 1, prevents outdoor pernicious gas from flowing backward, and pollutes indoor fresh sky
Gas, when air draft flabellum 10 work while, the second driving motor 28 is opened simultaneously, the output shaft band of the second driving motor 28
Dynamic second worm screw 29 rotation, the second worm screw 29 drive the second gear 32 being meshed to rotate while rotation, second gear 32
The second bull stick 31 is driven to rotate in the course of rotation, the second bull stick 31 drives air inlet flabellum 33 will be outdoor in the course of rotation
Fresh air be discharged into interior, outdoor fresh air first passes around blast pipe 2 during being discharged into and discharges into the second storage box 19
In, then enter interior by the multi-filtering mechanism filtering heel row in the second storage box 19, while working as and needing replacing filter frame 20
Or when cleaning, lock-screw 22 is first unscrewed, then 36 filter frame 20 is extracted out out of socket using knob, then by the first filter layer
24 and second filter layer 25 extracted out out of sliding sleeve 23, replaced or cleaned.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of split type fresh air system, including air-exhausting duct (1) and blast pipe (2), air-exhausting duct (1) are placed horizontally at blast pipe
(2) top, it is characterised in that: the bottom of the air-exhausting duct (1) and the top of blast pipe (2) are solid by symmetrically arranged two
Fixed pole (3) is fixedly connected, and one end of the air-exhausting duct (1) is communicated with the first installs case (4), the top of first installs case (4)
Portion is fixedly connected with the first driving motor (5), is fixedly connected with the first worm screw on the output shaft of first driving motor (5)
(6), first worm screw (6) runs through the top of the first installs case (4) and extends internally, fixed in first installs case (4)
It is connected with first support bar (7), is rotatably connected to the first bull stick (8) on the first support bar (7), first bull stick (8)
One end fixing sleeve be connected to the first gear (9) being meshed with the first worm screw (6), first bull stick (8) is far from first gear
(9) one end is fixedly connected with air draft flabellum (10), and the air-exhausting duct (1) is communicated with the far from the one end of the first installs case (4)
One storage box (11), first storage box (11) is interior to be fixedly connected with symmetrically arranged two slide bars (12), the slide bar
(12) it is slidably connected on sliding block (13), the opposite one end of two sliding blocks (13) is fixedly connected by upright bar (14), described
Upright bar (14) is fixedly connected with symmetrically arranged two supporting blocks (15), two supporting blocks close to the side of air-exhausting duct (1)
(15) it is fixedly connected by anti-reverse plate (16), the slide bar (12) is fixedly connected with strut far from the one end of anti-reverse plate (16)
(17), the strut (17) is fixedly connected with the inner wall of the first storage box (11), is arranged with spring (18) on the slide bar (12),
The both ends of the spring (18) are fixedly connected with sliding block (13) and strut (17) respectively, and the air-exhausting duct (1) is close to the first installation
One end of case (4) is communicated with the second storage box (19), and sliding is inserted with filter frame (20) in second storage box (19), described
Filter frame (20) runs through the interior bottom of the second storage box (19) and extends outwardly, and one end that the filter frame (20) extends is fixed to be connected
It is connected to fixed block (21), the both ends of the fixed block (21) are equipped with screw thread mouth, and the screw thread mouth internal screw thread is connected with lock-screw
(22), second storage box (19) is equipped with thread groove corresponding with lock-screw (22), fixes in the filter frame (20)
Symmetrically arranged two pairs of sliding sleeves (23) are connected with, slidably connect the first filter layer respectively in same a pair of two sliding sleeves (23)
(24) and the second filter layer (25), side of first installs case (4) with the second storage box (19) far from blast pipe (2) are solid
Surely it being inserted with ventilation duct (26), the blast pipe (2) is communicated with the second installs case (27) far from the one end of the second storage box (19),
It is fixedly connected with the second driving motor (28) at the top of second installs case (27), the output of second driving motor (28)
It is fixedly connected on axis the second worm screw (29), second worm screw (29) is run through the top of the second installs case (27) and inwardly prolonged
It stretches, is fixedly connected with second support bar (30) in second installs case (27), is rotatablely connected on the second support bar (30)
One end fixing sleeve of second bull stick (31), second bull stick (31) is connected to the second gear being meshed with the second worm screw (29)
(32), second bull stick (31) is fixedly connected with air inlet flabellum (33) far from the one end of second gear (32), and described first sets
The side of object case (11) and the second installs case (27) separate air-exhausting duct (1) is fixedly plugged with trapezoidal ventilation duct (34).
2. a kind of split type fresh air system according to claim 1, it is characterised in that: sliding in the trapezoidal ventilation duct (34)
It is dynamic to be inserted with filter screen (35).
3. a kind of split type fresh air system according to claim 1, it is characterised in that: the filter frame (20) is gelatinization cotton
Coarse filtration frame.
4. a kind of split type fresh air system according to claim 1, it is characterised in that: first filter layer (24) is to urge
Change activated carbon adsorption layer.
5. a kind of split type fresh air system according to claim 1, it is characterised in that: second filter layer (25) is
HEPA filter layer.
6. a kind of split type fresh air system according to claim 1, it is characterised in that: the top of the fixed block (21) is solid
Surely knob (36) are connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821061100.5U CN208765175U (en) | 2018-07-05 | 2018-07-05 | A kind of split type fresh air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821061100.5U CN208765175U (en) | 2018-07-05 | 2018-07-05 | A kind of split type fresh air system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208765175U true CN208765175U (en) | 2019-04-19 |
Family
ID=66128743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821061100.5U Active CN208765175U (en) | 2018-07-05 | 2018-07-05 | A kind of split type fresh air system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208765175U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425682A (en) * | 2019-08-09 | 2019-11-08 | 台州市立医院 | A kind of fungi-proofing air interchanger of hospital ventilation |
| CN116499059A (en) * | 2023-06-28 | 2023-07-28 | 西安四腾环境科技有限公司 | Ventilation backflow preventing device for laboratory |
-
2018
- 2018-07-05 CN CN201821061100.5U patent/CN208765175U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425682A (en) * | 2019-08-09 | 2019-11-08 | 台州市立医院 | A kind of fungi-proofing air interchanger of hospital ventilation |
| CN116499059A (en) * | 2023-06-28 | 2023-07-28 | 西安四腾环境科技有限公司 | Ventilation backflow preventing device for laboratory |
| CN116499059B (en) * | 2023-06-28 | 2023-09-08 | 西安四腾环境科技有限公司 | Ventilation backflow preventing device for laboratory |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20190425 Address after: 621000 Yongxing Industrial Park, Mianyang High-tech Zone, Sichuan Province Patentee after: SICHUAN MIANYANG GUOQIANG SPECIAL DOOR INDUSTRY CO., LTD. Address before: 246000 Shifengshan District, Zongyang Town, Zongyang County, Anqing City, Anhui Province, 43 Building No. 2 Patentee before: Wu Junye |