CN116930434A - Indoor pollutant detection device - Google Patents
Indoor pollutant detection device Download PDFInfo
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- CN116930434A CN116930434A CN202311209841.9A CN202311209841A CN116930434A CN 116930434 A CN116930434 A CN 116930434A CN 202311209841 A CN202311209841 A CN 202311209841A CN 116930434 A CN116930434 A CN 116930434A
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- bag
- ring
- fixed ring
- movable ring
- fixedly connected
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- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 9
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 9
- 239000000428 dust Substances 0.000 claims abstract description 32
- 238000005070 sampling Methods 0.000 claims abstract description 19
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 230000000712 assembly Effects 0.000 claims abstract description 6
- 238000000429 assembly Methods 0.000 claims abstract description 6
- 239000000356 contaminant Substances 0.000 claims description 10
- 239000012790 adhesive layer Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- 239000012535 impurity Substances 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
Classifications
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- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses an indoor pollutant detection device, which belongs to the technical field of environment detection equipment and comprises a bottom plate and a top plate, wherein a plurality of groups of sampling assemblies are arranged between the top plate and the bottom plate, each sampling assembly comprises a movable ring and a fixed ring, a dust-proof bag and a wind shielding bag are fixedly arranged between the movable ring and the fixed ring, a plurality of guide rods are fixedly connected between the bottom plate and the top plate, penetrate through the fixed ring and are fixedly connected with the fixed ring, and the guide rods penetrate through the movable ring and are elastically connected with the movable ring; when needs are examined, can emit the air current in the wind blocking bag through the honeycomb duct, later tear wind blocking bag and dust bag, can survey impurity such as dust that contains in the air, can take a sample many times through this structure in the air, also can take a sample at intervals simultaneously to improve the degree of accuracy that detects, and because the design of dust bag and wind blocking bag makes the whole volume of device less, thereby be convenient for install and use.
Description
Technical Field
The invention relates to the technical field of environment detection equipment, in particular to an indoor pollutant detection device.
Background
Along with the sustainable development of the economy in China, various living standards of people are obviously improved, and meanwhile, the requirements of people on indoor environments are higher and higher, especially on public places such as hospitals, factories and markets, proper temperature, humidity and air pressure are required, no pollutant is required, and the air quality is high.
Chinese patent CN211401835U discloses a filtering and collecting device for indoor environment detection, comprising a connecting plate, a fan, a hydraulic rod, and a collecting cover; the upper surface of the connecting plate is rotationally connected with a circular plate, the hydraulic rod is fixedly connected to the circular plate, the collecting cover is fixedly connected to the upper end part of the hydraulic rod, the inner side wall of the collecting cover is fixedly connected with a dust filtering bag, and the fan is positioned on one side of the dust filtering bag and is fixedly connected to the inner side wall of the collecting cover; the small end of the collecting cover is communicated with a gas collecting bottle through a telescopic hose, and the gas collecting bottle is positioned at the lower side of the connecting plate; this scheme not only can effectually collect indoor high altitude's air, can filter the dust in the air moreover and collect, is convenient for the staff to distinguish the detection to air and the dust in the air, has improved the accuracy of air quality testing result to a certain extent.
The dust in the air is filtered through the dust filtering bag, and the air is sampled through the gas collecting bottle, but in the actual use process, as the dust filtering bag and the gas collecting bottle are mutually separated, if the dust filtering bag and the gas collecting bottle need to be sampled for multiple times in different time periods, the whole volume of the equipment can be correspondingly increased, so that the device has certain limitation in installation or use, and the device still has improvement.
Accordingly, there is a need to provide an indoor contaminant detection device that solves the above-mentioned problems.
Disclosure of Invention
The invention aims to provide an indoor pollutant detection device, which is used for solving the problems that the existing device provided in the background art filters dust in air through a dust filtering bag and samples the air through a gas collecting bottle, but in the actual use process, because the dust filtering bag and the gas collecting bottle are mutually separated, if the dust filtering bag and the gas collecting bottle need to be sampled for multiple times in different time periods, the whole volume of the device is correspondingly increased, and the device is limited in installation or use.
Based on the thought, the invention provides the following technical scheme: the indoor pollutant detection device comprises a bottom plate and a top plate, a plurality of groups of sampling assemblies are arranged between the top plate and the bottom plate, each sampling assembly comprises a movable ring and a fixed ring, a dust-proof bag and a wind shielding bag are fixedly arranged between the movable ring and the fixed ring, a plurality of guide rods are fixedly connected between the bottom plate and the top plate, penetrate through the fixed ring and are fixedly connected with the fixed ring, and the guide rods penetrate through the movable ring and are elastically connected with the movable ring;
the guide assembly is slidably arranged between the bottom plate and the top plate, the driving assembly matched with the movable ring is arranged on the fixed ring, and when the guide assembly moves to the inner side of the fixed ring, the driving assembly can be driven to rotate through the traction force of the guide assembly on the driving assembly, so that the movable ring is driven to move in a direction away from the fixed ring, and the air flow passing through the air outlet is blocked by the guide assembly and enters between the movable ring and the fixed ring.
As a further scheme of the invention: the wind shielding bag is positioned at the outer side of the dustproof bag.
As a further scheme of the invention: a telescopic shield is fixedly connected between the fixed ring and the movable ring in each two adjacent groups of sampling assemblies and between the top plate and the movable ring adjacent to the top plate.
As a further scheme of the invention: the air guide assembly comprises a connecting pipe and an air guide plate sleeved outside the connecting pipe, the connecting pipe penetrates through the circle center of the air guide plate and is in threaded connection with the air guide plate, a first magnetic block is fixedly connected to the peripheral surface of the air guide plate, a limiting rod is fixedly connected to the fixing ring and is arranged on the inner side of the movable ring, the outer diameter of the fixing ring is equal to that of the movable ring, the inner diameter of the fixing ring is smaller than that of the movable ring, a notch matched with the first magnetic block is formed in the inner wall of the fixing ring, and the bottom surface of the notch is flush with the top surface of the limiting rod.
As a further scheme of the invention: the driving assembly comprises a rotary table rotationally connected with a fixed ring, an annular groove is formed in the side surface, close to the movable ring, of the fixed ring, the rotary table is rotationally arranged in the annular groove, a convex block is fixedly connected to the inner wall of the rotary table, an arc rod is fixedly connected to one side surface of the convex block, a baffle plate is fixedly arranged in the annular groove, the arc rod penetrates through the baffle plate and is in sliding connection with the baffle plate, a second spring is arranged between the baffle plate and the convex block, a third magnetic block is arranged at a notch in the annular groove and penetrates out of the fixed ring and is in sliding fit with the fixed ring, different magnetic poles are arranged on the opposite side of the third magnetic block to the first magnetic block, a pull rope is fixedly connected between the arc rod and the third magnetic block, a plurality of second magnetic blocks are embedded on the outer side surface of the rotary table, close to the fixed ring, a plurality of fourth magnetic blocks are embedded on one side surface, close to the movable ring, and the second magnetic blocks and the fourth magnetic blocks are provided with the same magnetic poles.
As a further scheme of the invention: the dustproof bag and the wind shielding bag are arranged in a strip shape, a reverse-shaped adhesive layer is arranged on the surface of the dustproof bag and the wind shielding bag, and the dustproof bag and the wind shielding bag are fixedly adhered to the outer sides of the movable ring and the fixed ring in an end-to-end mode.
As a further scheme of the invention: the dustproof bag and the wind shielding bag are annular and fixed on the outer sides of the movable ring and the fixed ring in an adhesive mode.
As a further scheme of the invention: the wind blocking bag is fixedly connected with a flow guide pipe, and a valve is arranged on the flow guide pipe.
As a further scheme of the invention: the wind shielding bag is made of rubber materials, and the dust prevention bag is made of filter paper.
As a further scheme of the invention: the annular groove is internally provided with a roller, the roller is rotationally connected with the fixed ring, and the pull rope bypasses the outer side of the roller.
Compared with the prior art, the invention has the beneficial effects that: the device is matched with the guide assembly through the driving assembly, the guide assembly moves between the top plate and the bottom plate along with the air deflector, the guide assembly is matched with the fixed rings in each group, so that the movable ring moves towards the direction away from the fixed rings, at the moment, the air flow passing through the air outlet overflows to the periphery under the blocking of the air deflector and enters between the fixed rings and the movable ring, and is captured by the air deflector bag, dust in the air flow is captured by the dust deflector bag, when detection is needed, the air flow in the air deflector bag is discharged through the guide tube, then the air deflector bag and the dust deflector bag are torn off, impurities such as dust contained in the air can be detected, the air in the air can be sampled for multiple times through the structure, and meanwhile, the air can be sampled at intervals, so that the detection accuracy is improved.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a diagram of the distribution of the wind shield and the telescoping shield of the present invention;
FIG. 3 is a schematic view of the guide bar and first spring structure of the present invention;
FIG. 4 is a schematic view of a first magnetic block and a stop lever according to the present invention;
FIG. 5 is a schematic view of the structure of the air deflector, the fixed ring and the movable ring of the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 5A according to the present invention;
FIG. 7 is a schematic diagram of a pull cord connection structure of the present invention;
FIG. 8 is a cross-sectional view of a retaining ring of the present invention;
FIG. 9 is a second magnet distribution diagram of the present invention;
FIG. 10 is a first magnet distribution diagram of the present invention;
FIG. 11 is a schematic view of the wind shielding tape structure of the present invention;
FIG. 12 is a schematic view of the adhesive layer structure of the present invention;
FIG. 13 is a schematic view showing the structure of a second embodiment of the present invention for driving the connection pipe to rotate;
fig. 14 is an enlarged schematic view of the structure of fig. 13 at B according to the present invention.
In the figure: 1. a ventilation hood; 2. a telescoping shield; 3. a wind shielding bag; 4. a bottom plate; 5. a fixing plate; 6. a top plate; 7. a bracket; 8. a moving ring; 9. a fixing ring; 10. a guide rod; 11. a first spring; 12. a connecting pipe; 13. a first magnetic block; 14. a limit rod; 15. a dust-proof bag; 16. an air deflector; 17. a servo motor; 18. a turntable; 19. a second magnetic block; 20. a third magnetic block; 21. a bump; 22. an arc-shaped rod; 23. a second spring; 24. a baffle; 25. a pull rope; 26. a roller; 27. a fourth magnetic block; 28. a flow guiding pipe; 29. an adhesive layer; 30. a connecting rod; 31. an electromagnet; 32. a slide block; 33. a clamping block; 34. a traction rope; 35. and (3) a fan blade.
Detailed Description
As shown in fig. 1-3, an indoor pollutant detecting device comprises a bottom plate 4 and a top plate 6, a plurality of groups of sampling components are arranged between the top plate 6 and the bottom plate 4, the sampling components comprise a movable ring 8 and a fixed ring 9, a dust-proof bag 15 and a wind shielding bag 3 are fixedly arranged between the movable ring 8 and the fixed ring 9, in practical application, a fixed plate 5 is fixedly sleeved on the outer side of the top plate 6, the fixed plate 5 is arranged at an air outlet on a wall, specifically, an air outlet is formed in the indoor wall, a ventilation hood 1 is fixedly arranged at the air outlet, a fan is arranged in the ventilation hood 1 so as to lead indoor air out through the air outlet, the fixed plate 5 is fixedly arranged on the outer side of the wall and aligned with the air outlet, and air flow led out through the air outlet can be captured by the sampling components, so that sampling operation is completed, and later workers are facilitated to detect the air.
A plurality of guide rods 10 are fixedly connected between the bottom plate 4 and the top plate 6, the guide rods 10 penetrate through the fixed ring 9 and are fixedly connected with the fixed ring 6, the guide rods 10 penetrate through the movable ring 8 and are in sliding connection with the fixed ring 9, a plurality of first springs 11 are sleeved outside the guide rods 10, the first springs 11 are arranged between the movable ring 8 and the fixed ring 9 and between the top plate 6 and the adjacent movable ring 8 between two groups of sampling components, so that elastic connection between the movable ring 8 and the guide rods 10 is achieved, a guide component is slidably arranged between the bottom plate 4 and the top plate 6, a driving component matched with the movable ring 8 is arranged on the fixed ring 9, in an initial state, the movable ring 8 and the fixed ring 9 are in a mutually attached state, when the guide component moves to the inner side of the fixed ring 9, the driving component can be driven to rotate through the traction force of the guide component on the driving component, the movable ring 8 is driven to move in a direction away from the fixed ring 9, and at the moment, air flow passing through an air outlet is blocked by the guide component, and enters between the movable ring 8 and the fixed ring 9, and is favorable for completing sampling operation.
As shown in fig. 2-12, the air guiding assembly includes a connecting pipe 12 and an air guiding plate 16 sleeved outside the connecting pipe 12, the air guiding plate 16 is in a circular structure, and the outer diameter of the air guiding plate 16 is slightly smaller than the inner diameter of the fixing ring 9, specifically, external threads are provided outside the connecting pipe 12, so that the connecting pipe 12 passes through the center of the air guiding plate 16 and is in threaded connection with the air guiding plate 16, in order to limit the air guiding plate 16, a first magnetic block 13 is fixedly connected to the outer peripheral surface of the air guiding plate 16, a limit rod 14 is fixedly connected to the fixing ring 9, the limit rod 14 is arranged inside the movable ring 8, and when the air guiding plate 16 rotates, the first magnetic block 13 can be in contact with the limit rod 14, so that the air guiding plate is limited, and rotation of the air guiding plate is avoided.
During actual use, the outer diameters of the fixed ring 9 and the movable ring 8 are equal, the inner diameter of the fixed ring 9 is smaller than that of the movable ring 8, a notch matched with the first magnetic block 13 is formed in the inner wall of the fixed ring 9, and the bottom surface of the notch is flush with the top surface of the limit rod 14, so that the first magnetic block 13 can smoothly slide from the limit rod 14 to the notch.
The driving assembly comprises a rotary table 18 rotationally connected with the fixed ring 9, specifically, an annular groove is formed in the side surface, close to the movable ring 8, of the fixed ring 9, the rotary table 18 is rotationally arranged in the annular groove, a convex block 21 is fixedly connected to the inner wall of the rotary table 18, an arc rod 22 is fixedly connected to one side surface of the convex block 21, the arc rod 22 coincides with the circle center of the fixed ring 9, a baffle 24 is arranged in the annular groove, the baffle 24 is fixedly connected with the fixed ring 9, the arc rod 22 penetrates through the baffle 24 and is in sliding connection with the baffle 24, a second spring 23 is arranged between the baffle 24 and the convex block 21, and the second spring 23 can be sleeved on the outer side of the arc rod 22 in practical application.
Further, still be provided with third magnetic path 20 in the notch department that is located in the annular groove, third magnetic path 20 one end is passed solid fixed ring 9 and is put in the notch department, and third magnetic path 20 and solid fixed ring 9 sliding fit, when first magnetic path 13 is located the notch department, third magnetic path 20 and first magnetic path 13 mutually support, and the opposite one side of both has different magnetic poles, fixedly connected with stay cord 25 between arc pole 22 and third magnetic path 20, for the steady removal of stay cord 25, be provided with roller 26 in the annular groove, roller 26 rotates with solid fixed ring 9 to be connected, and stay cord 25 is walked around from the outside of roller 26.
Furthermore, a plurality of second magnetic blocks 19 are embedded on the outer side surface of the turntable 18, the second magnetic blocks 19 are fixedly connected with the turntable 18, a plurality of fourth magnetic blocks 27 are fixedly embedded on one side surface of the movable ring 8, which is close to the fixed ring 9, the opposite surfaces of the second magnetic blocks 19 and the fourth magnetic blocks 27 have the same magnetic poles, and the second magnetic blocks 19 and the fourth magnetic blocks 27 are distributed in a staggered manner in the initial state, so that the plurality of second magnetic blocks 19 and the fourth magnetic blocks 27 are mutually staggered in the horizontal direction.
In order to sample the air in the room, the wind shielding bag 3 is made of an elastic material such as plastic or rubber, and the dust shielding bag 15 is made of a material such as filter paper capable of filtering dust, and in actual use, the wind shielding bag 3 is located outside the dust shielding bag 15.
As a first embodiment of the structure of the dust-proof bag 15 and the wind-proof bag 3, the dust-proof bag 15 and the wind-proof bag 3 may be annular and fixed on the outer sides of the movable ring 8 and the fixed ring 9 by bonding.
As a second embodiment of the structure of the dust-proof bag 15 and the wind-proof bag 3, the dust-proof bag 15 and the wind-proof bag 3 can be also provided in a belt shape, the surface of the dust-proof bag 15 and the wind-proof bag 3 is provided with a bonding layer 29 in a shape of a Chinese character 'hui', and the dust-proof bag is fixedly bonded to the outer sides of the movable ring 8 and the fixed ring 9 in an end-to-end mode, thereby being beneficial to the disassembly and the installation of the dust-proof bag 15 and the wind-proof bag 3.
In addition, a flow guide pipe 28 is fixedly connected to the wind shielding bag 3, and a valve is arranged on the flow guide pipe 28 so as to guide out the air flow captured by the wind shielding bag 3.
Of course, in order to avoid the air flow passing through the air outlet from flowing out of the movable ring 8 and the fixed ring 9, the telescopic shield 2 is fixedly connected between the fixed ring 9 and the movable ring 8 in two adjacent groups of sampling assemblies and between the top plate 6 and the movable ring 8 adjacent to the fixed ring.
In actual use, when the air flow passing through the air outlet needs to be sampled, the connecting pipe 12 can be driven to rotate, as the connecting pipe 12 is in threaded connection with the air deflector 16 and the first magnetic block 13 is in contact with the limit rod 14, the air deflector 16 can be driven to move towards the bottom plate 4 in the rotating process, when the air deflector 16 moves to the inner side of the fixed ring 9 in the first group, the first magnetic block 13 on the outer side of the air deflector 16 is positioned at the notch, the third magnetic block 20 can be driven to slide outwards by the attraction between the first magnetic block 13 and the third magnetic block 20 to pull the pull rope 25, the turntable 18 can be driven to rotate relative to the fixed ring 9 by the pulling force of the arc rod 22 by the pull rope 25, so that the second magnetic block 19 on the turntable 18 is aligned with the fourth magnetic block 27 on the movable ring 8, at this time, the repulsive force between the second magnetic block 19 and the fourth magnetic block 27 can drive the movable ring 8 to overcome the acting force of the first spring 11 and move towards the direction away from the fixed ring 9, the air deflector 16 is positioned at the inner side of the fixed ring 9, and the air deflector 16 and the fixed ring 9 can prevent the air flow from being led out, and because the movable ring 8 and the fixed ring 9 are in a separated state at this time, when the air flow hits the air deflector 16 and the fixed ring 9, the air flow can flow around to enter between the movable ring 8 and the fixed ring 9, dust in the air can be filtered through the dustproof bag 15, and when the air flow passes through the dustproof bag 15, the air baffle bag 3 is filled up, and the air baffle bag 3 is promoted to expand outwards;
along with the movement of the air deflector 16, when the first magnetic block 13 moves out of the notch, the first magnetic block 13 and the third magnetic block 20 are staggered, at the moment, the lug 21 is driven to reset under the action of the second spring 23, so that the rotary table 18 is driven to move reversely to reset, the second magnetic block 19 and the fourth magnetic block 27 are staggered again, the first spring 11 can drive the movable ring 8 to move towards the fixed ring 9 and be gradually attached to the fixed ring 9, after the movable ring 8 is attached to the fixed ring 9, air flow is stored among the movable ring 8, the fixed ring 9 and the wind shielding bag 3, and impurities such as dust of air are captured by the dustproof bag 15, so that the detection of the dust shielding bag is facilitated for workers;
when the air deflector 16 is staggered with the fixed rings 9, air flow passing through the air outlet can be guided out of the room along the fixed rings 9, and the like, the air deflector 16 can be matched with the fixed rings 9 in each group in the moving process, so that each group of sampling assemblies can sample indoor air;
in summary, the device is matched with the guide assembly through the driving assembly, and along with the movement of the air guide plate 16 between the top plate 6 and the bottom plate 4, the air guide plate is matched with the fixed rings 9 in each group, so that the movable rings 8 move away from the fixed rings 9, at the moment, the air flow passing through the air outlet overflows to the periphery under the blocking of the air guide plate 16 and enters between the fixed rings 9 and the movable rings 8, and is captured by the air shielding bag 3, dust in the air flow is captured by the dust shielding bag 15, when detection is needed, the air flow in the air shielding bag 3 can be discharged through the guide pipe 28, then the air shielding bag 3 and the dust shielding bag 15 are torn off, impurities such as dust in the air can be detected, the air in the air can be sampled for a plurality of times through the structure, and meanwhile, the air can be sampled for a period of time, so that the detection accuracy is improved, and the whole device is small in size due to the design of the dust shielding bag 15 and the air shielding bag 3, so that the device is convenient to install and use.
As shown in fig. 3, 5 and 13-14, the inner sides of the bottom plate 4 and the top plate 6 are respectively fixed with a bracket 7;
as the first embodiment for driving the connecting pipe 12 to rotate, both ends of the connecting pipe 12 penetrate through the bracket 7 and are rotationally connected with the bracket 7, the servo motor 17 is fixedly connected to the bracket 7 at the top plate 6, the connecting pipe 12 is in transmission connection with the output shaft of the servo motor 17 so as to drive the connecting pipe 12 to rotate, thereby driving the air deflector 16 to move, and in actual use, a time relay can be electrically connected to the connecting pipe 12 of the servo motor 17, so that the servo motor 17 is controlled to intermittently start and stop, the air deflector 16 is driven to move at one end distance outside the connecting pipe 12 at intervals, sampling work is performed at intervals, the whole sampling time is prolonged, and air under each indoor time period is sampled, and the accuracy of samples is improved.
As a second embodiment for driving the connecting pipe 12 to rotate, a connecting rod 30 may be coaxially disposed inside the connecting pipe 12, two ends of the connecting rod 30 respectively pass through the bracket 7 and are rotationally connected with the same, one end of the connecting rod 30 close to the top plate 6 is fixedly connected with a fan blade 35, a blind hole is formed on the outer circumferential surface of the connecting rod 30, a clamping block 33 is slidably disposed in the blind hole, specifically, a supporting spring is disposed at the bottom end inside the blind hole, two ends of the supporting spring are respectively fixedly connected with the clamping block 33 and one surface opposite to the blind hole, and a clamping groove matched with the clamping block 33 is formed on the inner wall of the connecting pipe 12;
further, a chute is provided at one end of the connecting rod 30 close to the bottom plate 4, a sliding block 32 is slidably provided in the chute, a traction rope 34 is fixedly connected between the sliding block 32 and the limiting block, the traction rope 34 is slidably connected with the connecting rod 30, specifically, the cross sections of the sliding block 32 and the chute are all of a T shape, so that the sliding block 32 is prevented from being separated from the connecting rod 30, a retainer is fixedly connected with the outer side of the bottom plate 4 through a supporting rod, an electromagnet 31 is mounted on the retainer, the sliding block 32 is made of an iron block, in the actual use process, an air flow led out through an air outlet can drive a fan blade 35 to rotate, and then the connecting rod 30 is driven to rotate, the connecting rod 30 can drive the connecting pipe 12 to rotate through the cooperation of a clamping block 33 and a clamping groove, when the connecting pipe 12 rotates, the air deflector 16 can be driven to move for sampling work, when the electromagnet 31 is electrified, the sliding block 32 is driven to slide outwards, the sliding block 32 can be driven to drive the connecting rod 32 to be separated from the clamping groove through the traction rope 34, the connecting rod 30 is separated from the connecting pipe 12 at the moment and is in a self-rotating state, the air deflector 16 cannot move relative to the connecting pipe 12, the electromagnet 31 can be controlled to be prolonged in the actual use process, and the period of the whole period can be controlled by controlling the connection of the electromagnet 31 to be prolonged.
The connection between the servo motor 17, the electromagnet 31 and the time relay is a mature technical means in the electrical field, and will not be described in detail.
As shown in fig. 7, the top surface and the bottom surface of the end of the third magnetic block 20 located in the annular groove are provided with protrusions, so as to avoid the third magnetic block 20 from being separated from the fixing ring 9.
Claims (10)
1. The utility model provides an indoor pollutant detection device, includes bottom plate and roof, is provided with multiunit sampling assembly between roof and the bottom plate, its characterized in that: the sampling assembly comprises a movable ring and a fixed ring, a dust-proof bag and a wind shielding bag are fixedly arranged between the movable ring and the fixed ring, a plurality of guide rods are fixedly connected between the bottom plate and the top plate, the guide rods penetrate through the fixed ring and are fixedly connected with the fixed ring, and the guide rods penetrate through the movable ring and are elastically connected with the movable ring;
the guide assembly is slidably arranged between the bottom plate and the top plate, the driving assembly matched with the movable ring is arranged on the fixed ring, and when the guide assembly moves to the inner side of the fixed ring, the driving assembly can be driven to rotate through the traction force of the guide assembly on the driving assembly, so that the movable ring is driven to move in a direction away from the fixed ring, and air flow is blocked by the guide assembly and enters between the movable ring and the fixed ring.
2. An indoor contaminant detection assembly according to claim 1, wherein: the wind shielding bag is positioned at the outer side of the dustproof bag.
3. An indoor contaminant detection assembly according to claim 2, wherein: a telescopic shield is fixedly connected between the fixed ring and the movable ring in each two adjacent groups of sampling assemblies and between the top plate and the movable ring adjacent to the top plate.
4. An indoor contaminant detection assembly according to claim 3, wherein: the air guide assembly comprises a connecting pipe and an air guide plate sleeved outside the connecting pipe, the connecting pipe penetrates through the circle center of the air guide plate and is in threaded connection with the air guide plate, a first magnetic block is fixedly connected to the peripheral surface of the air guide plate, a limiting rod is fixedly connected to the fixing ring and is arranged on the inner side of the movable ring, the outer diameter of the fixing ring is equal to that of the movable ring, the inner diameter of the fixing ring is smaller than that of the movable ring, a notch matched with the first magnetic block is formed in the inner wall of the fixing ring, and the bottom surface of the notch is flush with the top surface of the limiting rod.
5. The indoor contaminant detection device of claim 4, wherein: the driving assembly comprises a rotary table rotationally connected with a fixed ring, an annular groove is formed in the side surface, close to the movable ring, of the fixed ring, the rotary table is rotationally arranged in the annular groove, a convex block is fixedly connected to the inner wall of the rotary table, an arc rod is fixedly connected to one side surface of the convex block, a baffle plate is fixedly arranged in the annular groove, the arc rod penetrates through the baffle plate and is in sliding connection with the baffle plate, a second spring is arranged between the baffle plate and the convex block, a third magnetic block is arranged at a notch in the annular groove and penetrates out of the fixed ring and is in sliding fit with the fixed ring, different magnetic poles are arranged on the opposite side of the third magnetic block to the first magnetic block, a pull rope is fixedly connected between the arc rod and the third magnetic block, a plurality of second magnetic blocks are embedded on the outer side surface of the rotary table, close to the fixed ring, a plurality of fourth magnetic blocks are embedded on one side surface, close to the movable ring, and the second magnetic blocks and the fourth magnetic blocks are provided with the same magnetic poles.
6. An indoor contaminant detection assembly according to claim 1, wherein: the dustproof bag and the wind shielding bag are arranged in a strip shape, a reverse-shaped adhesive layer is arranged on the surface of the dustproof bag and the wind shielding bag, and the dustproof bag and the wind shielding bag are fixedly adhered to the outer sides of the movable ring and the fixed ring in an end-to-end mode.
7. An indoor contaminant detection assembly according to claim 1, wherein: the dustproof bag and the wind shielding bag are annular and fixed on the outer sides of the movable ring and the fixed ring in an adhesive mode.
8. An indoor contaminant detection assembly according to claim 1, wherein: the wind blocking bag is fixedly connected with a flow guide pipe, and a valve is arranged on the flow guide pipe.
9. An indoor contaminant detection assembly according to claim 1, wherein: the wind shielding bag is made of rubber materials, and the dust prevention bag is made of filter paper.
10. An indoor contaminant detection assembly according to claim 5, wherein: the annular groove is internally provided with a roller, the roller is rotationally connected with the fixed ring, and the pull rope bypasses the outer side of the roller.
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