CN113108216A - Portable air quality detection device for pollution site assessment - Google Patents
Portable air quality detection device for pollution site assessment Download PDFInfo
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- CN113108216A CN113108216A CN202110371212.0A CN202110371212A CN113108216A CN 113108216 A CN113108216 A CN 113108216A CN 202110371212 A CN202110371212 A CN 202110371212A CN 113108216 A CN113108216 A CN 113108216A
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- detector
- supporting leg
- supporting
- air quality
- quality detection
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- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 238000009434 installation Methods 0.000 claims abstract description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 239000013618 particulate matter Substances 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims 1
- 239000003570 air Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000001303 quality assessment method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
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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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
-
- 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
- F16M11/046—Allowing translations adapted to upward-downward translation movement
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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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a portable air quality detection device for pollution site assessment, which comprises a detection instrument body, a detector support, a height adjusting motor, a supporting leg mounting threaded block, a detector auxiliary supporting leg and a detector clamping assembly. The invention relates to the technical field of air quality detection devices, in particular to a portable air quality detection device for evaluating a polluted site, which is convenient to move, has excellent installation stability and is not easy to damage a detection instrument body.
Description
Technical Field
The invention relates to the technical field of air quality detection devices, in particular to a portable air quality detection device for pollution site assessment.
Background
The air quality monitor is a latest scientific and technological product which is developed based on the principle of constant potential electrolytic sensor to detect polluted gas and the principle of light scattering and is developed by combining the internationally mature electronic technology and the network communication technology, and can realize the real-time monitoring of the ambient air quality.
The fixed air quality detection devices in the market are inconvenient to move and monitor and use multipoint position environments according to control quality assessment requirements, and although some air quality detection devices which are convenient to move exist in the market at present, the air quality detection devices are poor in overall support stability and windproof performance; in addition, current detecting instrument body and detector support are the integral type setting usually, are not convenient for overhaul the detecting instrument body and maintain.
Disclosure of Invention
In order to overcome the defects, the invention provides the portable air quality detection device for evaluating the polluted site, which is convenient to move, has excellent installation stability and is not easy to damage the detection instrument body.
The invention provides the following technical scheme: the invention relates to a portable air quality detection device for evaluating a polluted site, which comprises a detection instrument body, a detector bracket, a height adjusting motor, a supporting leg mounting thread block, a detector auxiliary supporting leg, a fixing plate and a detector clamping assembly, wherein the detector bracket comprises a supporting base, two groups of supporting columns and a supporting cavity, the supporting columns are arranged on the supporting base, the supporting cavity is arranged at the upper end of each supporting column, the height adjusting screws are rotatably arranged between the supporting base and the supporting cavity, the two groups of supporting columns are arranged, the two groups of supporting columns are symmetrically arranged at two sides of the height adjusting screws, the height adjusting motor is arranged in the supporting cavity, the height adjusting screws are connected with an output shaft of the height adjusting motor, a placing cavity is arranged at the upper end of the supporting cavity, the placing cavity is a hollow cavity structure with an opening at the upper end, the detecting instrument body is arranged in the placing cavity and located between the detecting instrument clamping assemblies, the middle of the supporting leg mounting thread block is arranged on the height adjusting screw rod through threaded connection, the supporting leg mounting thread block is arranged on two groups of supporting columns in a sliding mode, clamping grooves are formed in two sides of the supporting leg mounting thread block, the upper end of the detecting instrument auxiliary supporting leg is hinged in the clamping grooves, the detecting instrument auxiliary supporting leg is provided with two groups of detecting instrument auxiliary supporting legs, the two groups of detecting instrument auxiliary supporting legs are hinged in the two groups of clamping grooves respectively, the lower end of the detecting instrument auxiliary supporting leg is provided with an accommodating groove, one end of a fixing plate is hinged to be arranged at the lower end of the accommodating groove, and the fixing plate is.
Further, detector clamping component includes clamping screw, fixed knob and sets up the head, clamping screw rotates through threaded connection and locates on placing the chamber lateral wall, the clamping screw both ends are located respectively to fixed knob and the head of setting up, detector clamping component is equipped with the multiunit, the multiunit detector clamping component is in regard to placing chamber axis symmetry setting.
Furthermore, a fastening pad is arranged on the fastening head, and the fastening pad is an elastic rubber pad.
Further, be equipped with the air inlet on the detecting instrument body, be equipped with the particulate matter filter screen on the air inlet.
Further, detecting instrument body upper portion is equipped with liquid crystal display, detecting instrument body lower part is equipped with the radiating groove.
Furthermore, a clamping groove is formed in the upper surface of the support base, and the lower end of the auxiliary support leg of the detector is clamped in the clamping groove.
Furthermore, a universal wheel is arranged below the supporting base, and a brake pad is arranged on the universal wheel.
Further, the height adjusting motor is a forward and reverse double-rotation motor.
The invention with the structure has the following beneficial effects: according to the portable air quality detection device for evaluating the polluted site, the auxiliary supporting legs of the detector are matched with the universal wheels, so that the portable movement of the whole device is met, and the support stability of the device in the use state is considered; meanwhile, through the arrangement of the detector clamping assembly, the convenient installation and fastening of the detecting instrument body and the convenient disassembly and maintenance of the detecting instrument body are realized, and the overall practicability of the device is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of a portable air quality detection device for evaluating a contaminated site according to the present invention;
fig. 2 is a schematic structural diagram of a use state of the portable air quality detection device for evaluating a contaminated site according to the present invention.
Wherein, 1, the detecting instrument body, 2, the detector support, 3, the altitude mixture control motor, 4, supporting leg installation screw thread piece, 5, the detector auxiliary supporting leg, 6, the fixed plate, 7, the detector clamping component, 8, support base, 9, the support column, 10, the altitude mixture control screw, 11, support chamber, 12, clamping screw, 13, fixed knob, 14, tight head, 15, fasten the pad, 16, the air inlet, 17, liquid crystal display, 18, the radiating groove, 19, the universal wheel, 20, place the chamber.
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; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in FIGS. 1-2, the technical scheme adopted by the invention is as follows: a portable air quality detection device for evaluating a polluted site comprises a detection instrument body 1, a detector support 2, a height adjusting motor 3, a support leg mounting thread block 4, a detector auxiliary support leg 5, a fixing plate 6 and a detector clamping component 7, wherein the detector support 2 comprises a support base 8, support columns 9, height adjusting screw rods 10 and support cavities 11, the support columns 9 are arranged on the support base 8, the support cavities 11 are arranged at the upper ends of the support columns 9, the height adjusting screw rods 10 are rotatably arranged between the support base 8 and the support cavities 11, the support columns 9 are provided with two groups, the two groups of support columns 9 are symmetrically arranged at two sides of the height adjusting screw rods 10, the height adjusting motor 3 is arranged in the support cavities 11, the height adjusting screw rods 10 are connected with output shafts of the height adjusting motor 3, a placing cavity 20 is arranged at the upper end of the support cavity 11, and the placing cavity, detector clamping unit 7 is located and is placed on 20 relative both sides walls in chamber, detecting instrument body 1 is located and is placed the intracavity 20 and be located between the detector clamping unit 7, locate on height-adjusting screw 10 through threaded connection at 4 middle parts of supporting leg installation screw thread piece, 4 sliding locate on two sets of support columns 9 of supporting leg installation screw thread piece, the block recess has all been seted up to 4 both sides of supporting leg installation screw thread piece, 5 upper ends of detector auxiliary supporting leg are articulated to be located in the block recess, detector auxiliary supporting leg 5 is equipped with two sets ofly, two sets of detector auxiliary supporting leg 5 are articulated respectively to be located in two sets of block recesses, 5 lower extremes of detector auxiliary supporting leg are equipped with and accomodate the groove, 6 one ends of fixed plate are articulated to be located and accomodate the groove lower extreme, under the initial.
Wherein, detector clamping component 7 includes clamping screw 12, fixed knob 13 and solid head 14, and clamping screw 12 rotates to locate through threaded connection and places on the chamber 20 lateral wall, and fixed knob 13 and solid head 14 are located clamping screw 12 both ends respectively, and detector clamping component 7 is equipped with the multiunit, and multiunit detector clamping component 7 is in placing chamber 20 axis symmetry setting. The fastening head 14 is provided with a fastening pad 15, and the fastening pad 15 is an elastic rubber pad.
Be equipped with air inlet 16 on the detecting instrument body 1, be equipped with the particulate matter filter screen on the air inlet 16. The upper part of the detecting instrument body 1 is provided with a liquid crystal display screen 17, and the lower part of the detecting instrument body 1 is provided with a heat radiating groove 18.
The upper surface of the supporting base 8 is provided with a clamping groove, and the lower end of the auxiliary supporting leg 5 of the detector is clamped in the clamping groove. The universal wheel 19 is arranged below the supporting base 8, and the brake pad is arranged on the universal wheel 19.
The height adjusting motor 3 is a forward and reverse rotation motor.
When the device is used, in an initial state, the fixing plate 6 is accommodated in the accommodating groove of the auxiliary supporting leg 5 of the detector, the upper end of the auxiliary supporting leg 5 of the detector is accommodated in the clamping groove of the supporting leg mounting threaded block 4, the lower end of the auxiliary supporting leg 5 of the detector is accommodated in the clamping groove, the device is conveniently moved to a position to be used through the moving action of the universal wheel 19, the height adjusting motor 3 is started to rotate forwards, the height adjusting motor 3 drives the height adjusting screw rod 10 to rotate, the supporting leg mounting threaded block 4 is driven to ascend when the height adjusting screw rod 10 rotates, the lower end of the auxiliary supporting leg 5 of the detector is driven to be away from the clamping groove when the supporting leg mounting threaded block 4 ascends, then the auxiliary supporting leg 5 of the detector is pulled out of the clamping groove, the fixing plate 6 is pulled out of the accommodating groove, the height adjusting motor 3 is, if the ground is unstable, the fixing plate 6 can be fixed on the ground through the fixing holes by screws; when the detecting instrument body 1 needs to be overhauled and maintained, the fixing knob 13 only needs to be screwed, the clamping of the detecting instrument body 1 is loosened, and the detecting instrument body 1 is taken down.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a contaminated site aassessment is with portable air quality detection device which characterized in that: the detector comprises a detecting instrument body, a detector bracket, a height adjusting motor, a supporting leg mounting thread block, a detector auxiliary supporting leg, a fixing plate and a detector clamping assembly, wherein the detector bracket comprises a supporting base, supporting columns, a height adjusting screw rod and a supporting cavity, the supporting columns are arranged on the supporting base, the supporting cavity is arranged at the upper end of the supporting columns, the height adjusting screw rod is rotatably arranged between the supporting base and the supporting cavity, the supporting columns are provided with two groups, the two groups of supporting columns are symmetrically arranged at two sides of the height adjusting screw rod, the height adjusting motor is arranged in the supporting cavity, the height adjusting screw rod is connected with an output shaft of the height adjusting motor, a placing cavity is arranged at the upper end of the supporting cavity, the placing cavity is a hollow cavity structure with an opening at the upper end, the detector clamping assembly is arranged on two opposite side walls of the placing, the utility model discloses a height-adjusting screw rod, including supporting leg installation thread piece, detector auxiliary supporting leg, fixed plate, supporting leg installation thread piece, height-adjusting screw rod, supporting leg installation thread piece middle part is located through threaded connection, supporting leg installation thread piece slides and locates on two sets of support columns, the block recess has all been seted up to supporting leg installation thread piece both sides, detector auxiliary supporting leg upper end is articulated to be located in the block recess, detector auxiliary supporting leg is equipped with two sets ofly, and is two sets of detector auxiliary supporting leg articulates respectively locates in two sets of block recesses, detector auxiliary supporting leg lower extreme is equipped with.
2. The portable air quality detection device for pollution site assessment according to claim 1, wherein: the detector clamping assembly comprises a fixing screw rod, a fixing knob and a fastening head, the fixing screw rod is rotatably arranged on the side wall of the placing cavity through threaded connection, the fixing knob and the fastening head are respectively arranged at two ends of the fixing screw rod, and the detector clamping assembly is provided with a plurality of groups and a plurality of groups which are symmetrically arranged relative to the axis of the placing cavity.
3. The portable air quality detection device for pollution site assessment according to claim 1, wherein: the fastening head is provided with a fastening pad which is an elastic rubber pad.
4. The portable air quality detection device for pollution site assessment according to claim 3, wherein: the detecting instrument body is provided with an air inlet, and a particulate matter filter screen is arranged on the air inlet.
5. The portable air quality detection device for pollution site assessment according to claim 1, wherein: the upper portion of the detecting instrument body is provided with a liquid crystal display screen, and the lower portion of the detecting instrument body is provided with a heat dissipation groove.
6. The portable air quality detection device for pollution site assessment according to claim 1, wherein: the upper surface of the support base is provided with a clamping groove, and the lower end of the auxiliary support leg of the detector is clamped in the clamping groove.
7. The portable air quality detection device for pollution site assessment according to claim 1, wherein: the support base below is equipped with the universal wheel, be equipped with the brake block on the universal wheel.
8. The portable air quality detection device for pollution site assessment according to claim 1, wherein: the height adjusting motor is a forward and reverse rotation motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110371212.0A CN113108216A (en) | 2021-04-07 | 2021-04-07 | Portable air quality detection device for pollution site assessment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110371212.0A CN113108216A (en) | 2021-04-07 | 2021-04-07 | Portable air quality detection device for pollution site assessment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113108216A true CN113108216A (en) | 2021-07-13 |
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ID=76715366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110371212.0A Pending CN113108216A (en) | 2021-04-07 | 2021-04-07 | Portable air quality detection device for pollution site assessment |
Country Status (1)
| Country | Link |
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| CN (1) | CN113108216A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116242670A (en) * | 2023-05-12 | 2023-06-09 | 北京建工环境修复股份有限公司 | Air quality detection device |
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| US5421549A (en) * | 1993-12-30 | 1995-06-06 | Richards; John W. | Support stand for optical equipment |
| US20150225123A1 (en) * | 2012-08-29 | 2015-08-13 | Tactiqa Technology Ab | Transportation box for technical equipment |
| CN108918767A (en) * | 2018-05-08 | 2018-11-30 | 芜湖渤江智能科技有限公司 | A kind of industrial plant air detecting device |
| CN109696161A (en) * | 2018-12-28 | 2019-04-30 | 陕西理工大学 | A kind of balance and stability mechanism of geological mapping instrument |
| CN110195813A (en) * | 2019-01-04 | 2019-09-03 | 大连思博科技服务有限公司 | A kind of movable type tachymeter |
| CN210771117U (en) * | 2019-09-27 | 2020-06-16 | 威海市三维工程测绘有限公司 | Surveying instrument positioner for surveying and mapping engineering |
| CN210890664U (en) * | 2019-08-09 | 2020-06-30 | 浙江晶熠科技有限公司 | Small-size environment weather station |
| CN211010646U (en) * | 2019-10-24 | 2020-07-14 | 张志刚 | GPS surveying instrument |
| CN211525894U (en) * | 2019-12-16 | 2020-09-18 | 福建中凯检测技术有限公司 | Support for indoor air detection |
| CN212004877U (en) * | 2020-03-23 | 2020-11-24 | 四川呈采工程勘察设计有限公司 | Cadastral surveying and mapping device |
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2021
- 2021-04-07 CN CN202110371212.0A patent/CN113108216A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5421549A (en) * | 1993-12-30 | 1995-06-06 | Richards; John W. | Support stand for optical equipment |
| US20150225123A1 (en) * | 2012-08-29 | 2015-08-13 | Tactiqa Technology Ab | Transportation box for technical equipment |
| CN108918767A (en) * | 2018-05-08 | 2018-11-30 | 芜湖渤江智能科技有限公司 | A kind of industrial plant air detecting device |
| CN109696161A (en) * | 2018-12-28 | 2019-04-30 | 陕西理工大学 | A kind of balance and stability mechanism of geological mapping instrument |
| CN110195813A (en) * | 2019-01-04 | 2019-09-03 | 大连思博科技服务有限公司 | A kind of movable type tachymeter |
| CN210890664U (en) * | 2019-08-09 | 2020-06-30 | 浙江晶熠科技有限公司 | Small-size environment weather station |
| CN210771117U (en) * | 2019-09-27 | 2020-06-16 | 威海市三维工程测绘有限公司 | Surveying instrument positioner for surveying and mapping engineering |
| CN211010646U (en) * | 2019-10-24 | 2020-07-14 | 张志刚 | GPS surveying instrument |
| CN211525894U (en) * | 2019-12-16 | 2020-09-18 | 福建中凯检测技术有限公司 | Support for indoor air detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116242670A (en) * | 2023-05-12 | 2023-06-09 | 北京建工环境修复股份有限公司 | Air quality detection device |
| CN116242670B (en) * | 2023-05-12 | 2023-06-30 | 北京建工环境修复股份有限公司 | Air quality detection device |
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Application publication date: 20210713 |