CN116893083B - Device for detecting concentration of nano particles in air - Google Patents
Device for detecting concentration of nano particles in air Download PDFInfo
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- CN116893083B CN116893083B CN202310895568.3A CN202310895568A CN116893083B CN 116893083 B CN116893083 B CN 116893083B CN 202310895568 A CN202310895568 A CN 202310895568A CN 116893083 B CN116893083 B CN 116893083B
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- air
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- 239000002105 nanoparticle Substances 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 75
- 238000005070 sampling Methods 0.000 claims abstract description 73
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 18
- 238000009833 condensation Methods 0.000 claims abstract description 16
- 230000005494 condensation Effects 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims description 12
- 210000001503 joint Anatomy 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 description 11
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000003475 lamination Methods 0.000 description 3
- 230000036541 health Effects 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 210000003781 tooth socket Anatomy 0.000 description 2
- 206010073310 Occupational exposures Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000675 occupational exposure Toxicity 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 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
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
-
- 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
- G01N1/24—Suction devices
-
- 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
- G01N1/26—Devices for withdrawing samples in the gaseous state with provision for intake from several spaces
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/065—Investigating concentration of particle suspensions using condensation nuclei counters
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- 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
Abstract
The invention discloses a device for detecting concentration of nano particles in air, which relates to the technical field of air detection and comprises a detection box, wherein a condensation particle counter is fixedly arranged at the top of the detection box, a placing groove is formed in one side of the detection box, the inner wall of the placing groove is rotationally connected with a height-adjusting sampling assembly, one end of the height-adjusting sampling assembly is fixedly connected with an upper air inlet pipe, one end of the upper air inlet pipe is fixedly connected with a filter pipe, and a sampling conversion mechanism is fixedly arranged in the middle of the inner wall of the detection box; according to the invention, the height position of the sleeve assembly arranged on the lifting frame is adjustable in a manner of arranging the lifting frame capable of being turned over and connecting the adjusting seat with the lifting frame in a sliding manner; the air inlet holes are formed in the plurality of adjusting sleeves, the plurality of adjusting sleeves are arranged in a sliding mode, the flexibility of the height positions of the air inlet holes is further improved, and then free sampling of air at different height positions is achieved.
Description
Technical Field
The invention relates to the technical field of air detection, in particular to a device for detecting concentration of nano particles in air.
Background
Along with the rapid development of technology, the nano material is widely applied to the fields of microelectronics, chemical industry, energy, environment and the like. However, due to the small size of the nanoparticles, access to the respiratory tract can affect human health, especially increasing the likelihood of occupational exposure for workers engaged in nanomaterial production and use. Therefore, it is important to detect the concentration of nanoparticles in the air in the working environment, so as to determine whether the concentration meets the health standard.
An existing air particulate matter detection device, such as an air particulate matter detection device disclosed in publication number CN217688439U, is provided with an external air inlet, and air sequentially passes through a detection unit and a filtering unit after entering a gas storage device, so as to detect the concentration of particulate matters in the air and filter the particulate matters. However, the detection air inlet position of such detection apparatus is single; the working environment of a person is a three-dimensional space, and the mass of dust and particles makes the distribution of air layers at different heights have great difference, so that the air inlet at a single position of the existing detection equipment is difficult to realize accurate sampling detection of the air at different positions in the three-dimensional working environment, and improvement is necessary.
Disclosure of Invention
The invention aims to provide a device for detecting the concentration of nano particles in air, so as to solve the problem that the detection equipment in the prior art provided in the background art is difficult to realize accurate sampling detection of air at different height positions.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the device comprises a detection box, wherein a condensation particle counter is fixedly arranged at the top of the detection box, a placing groove is formed in one side of the detection box, the inner wall of the placing groove is rotationally connected with a height-adjusting sampling assembly, one end of the height-adjusting sampling assembly is fixedly connected with an upper air inlet pipe, one end of the upper air inlet pipe is fixedly connected with a filter pipe, a plurality of filter assemblies are fixedly arranged in the middle of the filter pipe, and a filter control valve is fixedly arranged on one side of each filter assembly; one end of the filter pipe is fixedly connected with a discharge pipe, and a discharge control valve is fixedly arranged in the middle of the discharge pipe;
the middle part of the inner wall of the detection box is fixedly provided with a sampling conversion mechanism, one side of the sampling conversion mechanism is fixedly connected with a plurality of shunt sampling pipes, the sampling conversion mechanism is communicated with the plurality of shunt sampling pipes, and one ends of the plurality of shunt sampling pipes are respectively communicated with different positions of the filter pipe;
the sampling operation is carried out by different shunting sampling pipes through the sampling conversion mechanism, the input fixedly connected with detection pipe of condensation particle counter, the middle part fixed mounting of detection pipe has the detection air supply valve, the one end fixedly connected with sampling air pump of detection pipe, the one end of sampling air pump is through communicating pipe and sampling conversion mechanism fixed connection.
As a further scheme of the invention: the height-adjusting sampling assembly comprises a lifting frame, one side of the bottom of the lifting frame is rotationally connected with one end of the inner wall of the placing groove, one side of the lifting frame is slidably connected with an adjusting seat, one side of the adjusting seat is fixedly connected with a sleeve assembly, the sleeve assembly comprises a plurality of adjusting sleeves which are slidably connected with one another, one side of each of the plurality of adjusting sleeves is provided with an air inlet hole, and the inner walls of the plurality of air inlet holes are respectively connected with a dustproof pad in a clamping mode; the bottom fixedly connected with joint piece of crane, the joint groove has been seted up to the one end of standing groove, realizes the vertical spacing of crane through the joint of joint piece and joint groove.
As a further scheme of the invention: the bottom fixedly connected with butt joint cover of sleeve pipe subassembly, the bottom of butt joint cover is linked together with last intake pipe, a plurality of the equal fixedly connected with reposition of redundant personnel intake pipe in one side of inlet port, a plurality of the one end of reposition of redundant personnel intake pipe all extends to in the butt joint cover and fixed mounting has reposition of redundant personnel admission valve.
As a further scheme of the invention: the sampling conversion mechanism comprises an outer cover plate, a plurality of communication ports are formed in one side of the outer cover plate, a plurality of shunt sampling pipes are fixedly connected with the communication ports respectively, a switching plate is rotatably connected to the inner wall of the outer cover plate, the middle part of the switching plate is provided with the switching ports, the positions of the switching ports are correspondingly arranged with the communication ports, namely the switching ports can be sequentially and correspondingly arranged with the communication ports through rotation of the switching plate, a switching motor is fixedly arranged at the bottom of the outer cover plate, a driving gear is fixedly connected to the output end of the switching motor, and a driving tooth socket is formed in the edge of the bottom of the switching plate and is in meshed connection with the driving tooth socket; the communicating pipe is rotationally connected with the middle part of the switching plate; the inner wall of the switching plate is fixedly provided with an air pressure sensor.
As a further scheme of the invention: the middle part fixedly connected with evacuation pipe of communicating pipe, the middle part fixed mounting of evacuation pipe has the exhaust valve, the one end fixedly connected with evacuation pump of evacuation pipe, the one end fixedly connected with air supply pipe of evacuation pump, the air supply pipe is linked together with the bottom of detecting the case.
As a further scheme of the invention: a handle groove is formed in one side of the detection box, and a lifting handle is rotatably connected to the inner wall of the handle groove; the two sides of the bottom of the detection box are provided with lamination grooves, one side of the inner wall of each lamination groove is rotationally connected with a folding supporting plate, and the other side of the inner wall of each lamination groove is provided with an inclined plane.
As a further scheme of the invention: one end of the detection box is fixedly connected with an air inlet net frame, the inner wall of the air inlet net frame is fixedly connected with a dustproof net, one side of the air inlet net frame is fixedly connected with a lower air inlet pipe, one end of the lower air inlet pipe is fixedly connected with the filter pipe, and the middle part of the lower air inlet pipe is fixedly provided with a lower air inlet valve.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the height position of the sleeve assembly arranged on the lifting frame is adjustable in a manner of arranging the lifting frame capable of being turned over and connecting the adjusting seat with the lifting frame in a sliding manner; the air inlet holes are formed in the plurality of adjusting sleeves, the plurality of adjusting sleeves are arranged in a sliding mode, the flexibility of the height positions of the air inlet holes is further improved, and then free sampling of air at different height positions is achieved;
according to the invention, the plurality of split air inlet pipes are connected with the plurality of air inlet holes, and the plurality of split air inlet valves are used for respectively controlling the plurality of split air inlet pipes, so that the device can select the air inlet holes at proper positions to carry out air inlet sampling according to actual sampling detection requirements, namely, multi-point sampling detection on air at different height positions is realized; one end of each of the plurality of split-flow sampling pipes is communicated with different positions of the filter pipe respectively; therefore, the detection of the air in different filtering states is realized; through setting up sample conversion mechanism, realize detecting the selection of air sampling position on the filter tube for the device can satisfy different operation needs.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of a sleeve assembly of the present invention;
FIG. 3 is a cross-sectional view of a sleeve assembly of the present invention;
FIG. 4 is a cross-sectional view of the test cassette of the present invention;
FIG. 5 is a cross-sectional view of a sample conversion mechanism of the present invention;
FIG. 6 is a cross-sectional view of a sample conversion mechanism of the present invention.
In the figure: 1. a detection box; 2. a lifting frame; 3. an adjusting seat; 4. a sleeve assembly; 401. adjusting the sleeve; 402. a butt joint cover; 403. a split air inlet pipe; 404. a dust-proof pad; 5. a condensation particle counter; 6. an air inlet net rack; 7. an upper air inlet pipe; 8. a lower air inlet pipe; 9. a filter tube; 10. a filter assembly; 11. a filter control valve; 12. a discharge control valve; 13. a split sampling tube; 14. an outer cover plate; 15. a communication port; 16. a switching board; 17. a switching port; 18. a communicating pipe; 19. an air pressure sensor; 20. a drive gear; 21. folding the support plate; 22. a lifting handle; 23. and evacuating the pump.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, in an embodiment of the present invention, a device for detecting concentration of nanoparticles in air includes a detection box 1, a condensation particle counter 5 is fixedly installed on the top of the detection box 1, and the condensation particle counter 5 is configured to perform calculation and detection on concentration of nanoparticles in air, where the condensation particle counter 5 is implemented by using a prior art means, such as UF-CPC 100 type condensation particle counter 5;
a placing groove is arranged on one side of the detection box 1, the inner wall of the placing groove is rotationally connected with a height-adjusting sampling component,
the height-adjusting sampling assembly comprises a lifting frame 2, one side of the bottom of the lifting frame 2 is rotationally connected with one end of the inner wall of the accommodating groove, one side of the lifting frame 2 is slidably connected with an adjusting seat 3, one side of the adjusting seat 3 is fixedly connected with a sleeve assembly 4, the bottom of the lifting frame 2 is fixedly connected with a clamping block, one end of the accommodating groove is provided with a clamping groove, and vertical limiting of the lifting frame 2 is realized through clamping of the clamping block and the clamping groove; the height position of the sleeve assembly 4 arranged on the lifting frame 2 is adjustable by arranging the lifting frame 2 which can be turned over and connecting the adjusting seat 3 with the lifting frame 2 in a sliding way;
the sleeve assembly 4 comprises a plurality of adjusting sleeves 401 which are connected in a sliding manner, and one sides of the adjusting sleeves 401 are provided with air inlets; the air inlet holes are formed in the plurality of adjusting sleeves 401, and the plurality of adjusting sleeves 401 are arranged in a sliding mode, so that the flexibility of the height positions of the air inlet holes is further improved, and the free sampling of the air at different height positions is further realized;
in order to seal and prevent dust of the unused air inlet holes, the inner walls of the plurality of air inlet holes are all clamped and connected with a dust pad 404;
the bottom of the sleeve assembly 4 is fixedly connected with a butt joint cover 402, the bottom of the butt joint cover 402 is communicated with an upper air inlet pipe 7, one side of each of a plurality of air inlet holes is fixedly connected with a split air inlet pipe 403, and one end of each of the plurality of split air inlet pipes 403 extends into the butt joint cover 402 and is fixedly provided with a split air inlet valve; the plurality of split air inlet pipes 403 are connected with the plurality of air inlet holes, and the plurality of split air inlet pipes 403 are respectively controlled by the plurality of split air inlet valves, so that the device can select the air inlet holes at proper positions to carry out air inlet sampling according to actual sampling detection requirements, namely, multi-point sampling detection of air at different height positions is realized;
one end of the height-adjusting sampling assembly is fixedly connected with an upper air inlet pipe 7, one end of the upper air inlet pipe 7 is fixedly connected with a filter pipe 9, a plurality of filter assemblies 10 are fixedly arranged in the middle of the filter pipe 9, and a filter control valve 11 is fixedly arranged on one side of each filter assembly 10; the filtering component 10 is used for filtering and removing pollutant particles in the air, and is implemented by adopting the prior art means, one end of the filtering pipe 9 is fixedly connected with a discharge pipe, and the middle part of the discharge pipe is fixedly provided with a discharge control valve 12;
the middle part of the inner wall of the detection box 1 is fixedly provided with a sampling conversion mechanism, one side of the sampling conversion mechanism is fixedly connected with a plurality of shunt sampling pipes 13, the sampling conversion mechanism is communicated with the plurality of shunt sampling pipes 13, and one ends of the plurality of shunt sampling pipes 13 are respectively communicated with different positions of the filter pipe 9; therefore, the detection of the air in different filtering states is realized; when needed, the filter components 10 with different filtering functions can be alternately used, so that different actual filtering treatment requirements are met; referring to fig. 4, in this embodiment, two filter assemblies 10 are provided, three split-flow sampling tubes 13 are provided, and the three split-flow sampling tubes 13 are respectively connected to one end of the filter tube 9 near the upper air inlet tube 7, the filter tube 9 between the two filter assemblies 10, and one end of the filter tube 9 near the outlet tube, so as to respectively realize detection of air in an unfiltered state, filtration of air after primary filtration, and detection of air after secondary filtration;
sampling operation is carried out by different shunting sampling pipes 13 through a sampling conversion mechanism, the input end of the condensation particle counter 5 is fixedly connected with a detection pipe, the middle part of the detection pipe is fixedly provided with a detection air supply valve, one end of the detection pipe is fixedly connected with a sampling air pump, and one end of the sampling air pump is fixedly connected with the sampling conversion mechanism through a communicating pipe 18; through the periodic action of the sampling air pump, the air flow is driven to enter the condensation particle counter 5 from the outside through each pipeline.
The sampling conversion mechanism comprises an outer cover plate 14, a plurality of communication ports 15 are formed in one side of the outer cover plate 14, a plurality of shunt sampling pipes 13 are fixedly connected with the plurality of communication ports 15 respectively, a switching plate 16 is rotatably connected to the inner wall of the outer cover plate 14, a switching port 17 is formed in the middle of the switching plate 16, the position of the switching port 17 is correspondingly arranged with the communication ports 15, namely, the switching port 17 can be sequentially correspondingly arranged with each communication port 15 through the rotation of the switching plate, a switching motor is fixedly arranged at the bottom of the outer cover plate 14, a driving gear 20 is fixedly connected to the output end of the switching motor, a driving tooth slot is formed in the edge of the bottom of the switching plate 16, and the driving gear 20 is in meshed connection with the driving tooth slot; the communicating pipe 18 is rotatably connected with the middle part of the switching plate 16; the sampling conversion mechanism is arranged to realize the selection of the sampling position of the detection air on the filter pipe 9;
the inner wall of the switching plate 16 is fixedly provided with an air pressure sensor 19, and the air quantity entering the outer cover plate 14 is detected by arranging the air pressure sensor 19, so that the sample quantity fed into the condensation particle counter 5 is balanced, and the detection accuracy is improved.
The middle part of the communicating pipe 18 is fixedly connected with an emptying pipe, the middle part of the emptying pipe is fixedly provided with an emptying valve, one end of the emptying pipe is fixedly connected with an emptying pump 23, one end of the emptying pump 23 is fixedly connected with an air supply pipe, the air supply pipe is communicated with the bottom of the detection box 1, the middle part of the air supply pipe is fixedly provided with a one-way valve, and the conduction direction of the guide valve is that the emptying pump 23 conducts to the outside of the detection box 1; by arranging the structures such as the emptying pipe, the emptying pump 23 and the like, the outer cover plate 14 and the gas in the internal pipeline of the device are extracted and discharged, so that the influence of residual air on the detection accuracy is avoided.
A handle groove is formed in one side of the detection box 1, and a lifting handle 22 is rotatably connected to the inner wall of the handle groove; the folding support plate 21 is rotated and connected with the supporting plate 21, the other side of the inner wall of the folding support plate is set to be inclined plane, the center of the bottom of the detection box 1 is rotated and connected with a plurality of bearing rollers, so that the detection box 1 can be conveniently carried and moved, the bottom surface of the folding support plate 21 is lower than the bottom surface of the bearing rollers after being overturned and contacted with the inclined plane, the rotation angle of the folding support plate 21 is greater than ninety degrees, the supporting and pushing contact between the folding support plate 21 and the inclined plane is utilized, the limiting of the folding support plate 21 is realized, and the integral support of the detection box 1 is further realized.
In order to realize the detection to the air on lower height, the one end fixedly connected with of detection case 1 admits air rack 6, the inner wall fixedly connected with dust screen of rack 6 admits air, the one side fixedly connected with of rack 6 admits air intake pipe 8 down, the one end and the filter tube 9 fixed connection of intake pipe 8 down, the middle part fixed mounting of intake pipe 8 down has the admission valve.
When the device is used, the whole device is pushed and moved to a using position, each folding supporting plate 21 is rotated and unfolded, and the folding supporting plates 21 are used for supporting the whole detection box 1;
when the air at the height of the detection box 1 is required to be detected or the detection height is not required, the lower air inlet valve can be opened to carry out air inlet, and external air enters the filter pipe 9 through the air inlet net frame 6 and the lower air inlet pipe 8;
when air at a higher position is required to be detected, the lifting frame 2 is rotated, so that a clamping block on the lifting frame 2 is clamped with a clamping groove, the lifting frame 2 is vertical, the height positions of all air inlets are adjusted in a sliding adjustment seat 3 and drawing and pulling mode of all adjustment sleeves 401, sampling air inlet of air at a position without height is realized, when air at a certain height is required, a split air inlet valve on a split air inlet pipe 403 connected with the air inlet corresponding to the air inlet at the height is opened, external air enters the split air inlet pipe 403 from the air inlet and then enters a filter pipe 9 through an upper air inlet pipe 7;
when air detection at a certain position in the filter tube 9 is required, the driving gear 20 is started to rotate by the driving motor, and then the switching plate 16 is driven to rotate, so that the switching port 17 is aligned with the split sampling tube 13 connected with the position, and when the sampling air pump is started to perform air extraction sampling, each valve on the air path is opened, the rest valves are closed, the air pressure in the outer cover plate 14 is detected by the air pressure sensor 19, and when the air pressure reaches a preset value. The detection air supply valve is opened to supply air into the condensation particle counter 5 from the detection pipe, an operation panel of the condensation particle counter 5 is arranged on the top of the detection box 1 in a protruding mode, the condensation particle counter 5 is operated to calculate the concentration of nano particles in the air, after one sampling detection is completed, the evacuation valve can be started, and the air in the outer cover plate 14 and all communicated pipelines is discharged so as to carry out subsequent detection.
The present invention is not limited to the above embodiments, but is capable of modification and variation in all aspects, including those of ordinary skill in the art, without departing from the spirit and scope of the present invention.
Claims (4)
1. The device for detecting the concentration of the nano particles in the air is characterized by comprising a detection box (1), wherein a condensation particle counter (5) is fixedly arranged at the top of the detection box (1), a placing groove is formed in one side of the detection box (1), a height-adjusting sampling assembly is rotatably connected to the inner wall of the placing groove, an upper air inlet pipe (7) is fixedly connected to one end of the height-adjusting sampling assembly, a filter pipe (9) is fixedly connected to one end of the upper air inlet pipe (7), a sampling conversion mechanism is arranged in the middle of the inner wall of the detection box (1), a detection pipe is fixedly connected to the input end of the condensation particle counter (5), a sampling air pump is fixedly connected to one end of the detection pipe, and one end of the sampling air pump is fixedly connected with the sampling conversion mechanism through a communication pipe (18);
the height-adjusting sampling assembly comprises a lifting frame (2), one side of the bottom of the lifting frame (2) is rotationally connected with one end of the inner wall of the placing groove, one side of the lifting frame (2) is slidably connected with an adjusting seat (3), one side of the adjusting seat (3) is fixedly connected with a sleeve assembly (4), the sleeve assembly (4) comprises a plurality of adjusting sleeves (401) which are slidably connected with one another, and one side of each of the adjusting sleeves (401) is provided with an air inlet hole; the bottom of the sleeve assembly (4) is fixedly connected with a butt joint cover (402), the bottom of the butt joint cover (402) is communicated with an upper air inlet pipe (7), one side of each of a plurality of air inlet holes is fixedly connected with a split air inlet pipe (403), and one ends of the split air inlet pipes (403) extend into the butt joint cover (402);
one side of the sampling conversion mechanism is fixedly connected with a plurality of split-flow sampling pipes (13), and one end of each split-flow sampling pipe (13) is communicated with the filter pipe (9); a plurality of filter components (10) are fixedly arranged in the middle of the filter pipe (9), and a filter control valve (11) is fixedly arranged on one side of the filter components (10); the sampling conversion mechanism comprises an outer cover plate (14), a plurality of communication ports (15) are formed in one side of the outer cover plate (14), a plurality of shunt sampling pipes (13) are fixedly connected with the plurality of communication ports (15) respectively, a switching plate (16) is rotatably connected to the inner wall of the outer cover plate (14), a switching port (17) is formed in the middle of the switching plate (16), a switching motor is fixedly mounted at the bottom of the outer cover plate (14), a driving gear (20) is fixedly connected to the output end of the switching motor, driving tooth grooves are formed in the edges of the bottom of the switching plate (16), and the driving gear (20) is in meshed connection with the driving tooth grooves; an air pressure sensor (19) is fixedly arranged on the inner wall of the switching plate (16).
2. The device for detecting the concentration of nano particles in the air according to claim 1, wherein the middle part of the communicating pipe (18) is fixedly connected with an emptying pipe, the middle part of the emptying pipe is fixedly provided with an emptying valve, one end of the emptying pipe is fixedly connected with an emptying pump (23), one end of the emptying pump (23) is fixedly connected with an air supply pipe, and the air supply pipe is communicated with the bottom of the detection box (1).
3. The device for detecting the concentration of nano particles in the air according to claim 1, wherein a handle groove is formed in one side of the detection box (1), and a lifting handle (22) is rotatably connected to the inner wall of the handle groove; the detection box is characterized in that laminated board grooves are formed in two sides of the bottom of the detection box (1), a folding supporting plate (21) is rotatably connected to one side of the inner wall of each laminated board groove, and an inclined plane is arranged on the other side of the inner wall of each laminated board groove.
4. The device for detecting the concentration of nano particles in the air according to claim 1, wherein one end of the detection box (1) is fixedly connected with an air inlet net frame (6), the inner wall of the air inlet net frame (6) is fixedly connected with a dust screen, one side of the air inlet net frame (6) is fixedly connected with a lower air inlet pipe (8), one end of the lower air inlet pipe (8) is fixedly connected with a filter pipe (9), and a lower air inlet valve is fixedly arranged in the middle of the lower air inlet pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310895568.3A CN116893083B (en) | 2023-07-20 | 2023-07-20 | Device for detecting concentration of nano particles in air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310895568.3A CN116893083B (en) | 2023-07-20 | 2023-07-20 | Device for detecting concentration of nano particles in air |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116893083A CN116893083A (en) | 2023-10-17 |
| CN116893083B true CN116893083B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310895568.3A Active CN116893083B (en) | 2023-07-20 | 2023-07-20 | Device for detecting concentration of nano particles in air |
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| CN1269480A (en) * | 1998-11-19 | 2000-10-11 | 普拉塞尔技术有限公司 | Rotary valve |
| KR200200526Y1 (en) * | 2000-05-30 | 2000-10-16 | 주식회사신동쎄미코리아 | Air sampling apparatus for particle measurement |
| KR101467398B1 (en) * | 2013-07-17 | 2014-12-02 | 김중구 | Multitude Sampling Device for Measurement of Air Pollution |
| CN210571604U (en) * | 2019-06-25 | 2020-05-19 | 厦门隆力德环境技术开发有限公司 | Portable air sampling instrument |
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| CN214473205U (en) * | 2021-04-09 | 2021-10-22 | 河北嘉澳环境检测技术有限公司 | High-altitude polluted gas detection equipment |
| CN113670677A (en) * | 2021-08-23 | 2021-11-19 | 四川省兴欣钒科技有限公司 | Deaminizing tower vacuum sampling device and application method thereof |
| CN215811933U (en) * | 2021-09-17 | 2022-02-11 | 贵州省环境工程评估中心 | Sampling device for environmental monitoring |
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| CN210571604U (en) * | 2019-06-25 | 2020-05-19 | 厦门隆力德环境技术开发有限公司 | Portable air sampling instrument |
| CN214309774U (en) * | 2021-02-05 | 2021-09-28 | 厦门昱润环保科技有限公司 | Liftable empty gas detection surveys sampling device |
| CN214473205U (en) * | 2021-04-09 | 2021-10-22 | 河北嘉澳环境检测技术有限公司 | High-altitude polluted gas detection equipment |
| CN113670677A (en) * | 2021-08-23 | 2021-11-19 | 四川省兴欣钒科技有限公司 | Deaminizing tower vacuum sampling device and application method thereof |
| CN215811933U (en) * | 2021-09-17 | 2022-02-11 | 贵州省环境工程评估中心 | Sampling device for environmental monitoring |
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| CN116893083A (en) | 2023-10-17 |
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