CN107179221A - PM2.5 sampling apparatuses - Google Patents
PM2.5 sampling apparatuses Download PDFInfo
- Publication number
- CN107179221A CN107179221A CN201710530406.4A CN201710530406A CN107179221A CN 107179221 A CN107179221 A CN 107179221A CN 201710530406 A CN201710530406 A CN 201710530406A CN 107179221 A CN107179221 A CN 107179221A
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- gas
- strainer
- sampling
- cutters
- filter mechanism
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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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (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 present invention relates to enviromental monitoring equipment technical field, a kind of PM2.5 sampling apparatuses, including sampling end portion, PM2.5 cutters, extension tube, filter mechanism, traffic monitoring mechanism, vavuum pump and the controller being sequentially connected are disclosed；Gas to be detected enters PM2.5 cutters by sampling end portion, and the gas after being separated through PM2.5 cutters particle enters filter mechanism through extension tube, and the filtering enrichment PM2.5 particles on filter mechanism, remaining gas is discharged through traffic monitoring mechanism by vavuum pump.The device of the present invention can realize the PM2.5 particles sampling of real-time online, and gas flow is monitored in real time, it is ensured that be consistent in the unit interval by the gas volume of filter mechanism, improve detection efficiency；Dynamic heat mechanism is added, strainer and the ambient humidity of testing agency in drying and processing, reduction system are first carried out to the gas for entering filter mechanism, the service life of equipment is effectively extended.
Description
Technical field
The invention belongs to enviromental monitoring equipment technical field, it is related to a kind of PM2.5 sampling apparatuses.
Background technology
Because air environmental pollution situation is increasingly serious, the monitoring to Atmospheric Grains seems important all the more.Air
Grain thing refers to the general name of scattered solid-state or liquid particles shape material in an atmosphere, and its particle size range is about 0.1-2210 micro-
Rice.PM2.5 refers to particulate matter of the diameter less than or equal to 2.5 microns, also referred to as lung particulate matter in air.Its diameter is also
Less than the 1/20 of the hairline thickness of people.Although PM2.5 is the seldom component of content in earth atmosphere composition, it is to air
Quality and visibility etc. have important influence.Compared with thicker Atmospheric particulates, PM2.5 particle diameters are small, rich in it is substantial amounts of it is poisonous,
Harmful substance and residence time length in an atmosphere, fed distance are remote, thus to the influence of health and atmosphere quality
It is bigger.
The methods of detection Atmospheric particulates are more at present, and the equipment of independent detection is also more, typically for air
Grain thing, which carries out analysis, to be needed to detect the composition species and its quality of some elements present in particulate matter gross mass and particulate matter.
The sampling apparatus of detection device, which is set, also important influence to testing result.
The content of the invention
It is an object of the present invention to propose a kind of PM2.5 sampling apparatuses, PM2.5 particles can be efficiently separated out, are improved dense
Spend accuracy of detection.
In order to achieve the above object, the technical scheme that provides of the present invention is：PM2.5 sampling apparatuses, including be sequentially connected
Sampling end portion, PM2.5 cutters, extension tube, filter mechanism, traffic monitoring mechanism, vavuum pump and controller；Gas to be detected by
Sampling end portion enters PM2.5 cutters, and the gas after being separated through PM2.5 cutters particle enters filter mechanism through extension tube,
The filtering enrichment PM2.5 particles on filter mechanism, remaining gas is discharged through traffic monitoring mechanism by vavuum pump.
Preferably, the sampling end portion includes upper cover and the taper bucket；The upper cover periphery is uniformly distributed some air inlets, respectively
Along provided with weather shield in air inlet；The taper deep bead of indent, the deep bead upper surface are provided with the middle of the upper cover upper surface
Provided with a cover plate；The taper bucket upper port is tightly connected with the upper cover, and lower port is sealed with the PM2.5 cutters to be connected
Connect.
Preferably, the PM2.5 cutters include air inlet, disengagement chamber and gas outlet；Air inlet and the sampling end portion
It is tightly connected, gas outlet is a conical pipe, is tightly connected with the extension tube.
Preferably, the filter mechanism includes gas filtration mouth, strainer, high pressure apparatus and strainer transmission mechanism；The gas
Filter tip is tightly connected above strainer with the extension tube；The high pressure apparatus is located at strainer lower section and the filter tip phase
Right, the high pressure apparatus position relative with filter tip is provided with exhaust tube；The exhaust tube is connected with the traffic monitoring mechanism；Institute
State strainer transmission mechanism and drive strainer movement.
Preferably, the strainer transmission mechanism includes motor, driving wheel, driven pulley and some runners；The strainer coiling
It is wound in after each runner on driven pulley, is bypassed successively on driving wheel；The motor driving driving wheel is rotated, and drives each turn
Wheel and driven pulley are rotated.
Preferably, traffic monitoring mechanism includes pressure sensor, flow sensor, flow regulator and flow controller,
The pressure sensor, flow sensor and flow regulator are respectively placed between the exhaust tube of the filter mechanism and vavuum pump
Air pipe on.
Preferably, in addition to dynamic heat mechanism, in the extension tube.
Preferably, the dynamic heat mechanism includes meteorological detection unit, heating unit and heat control unit.
Preferably, the meteorological detection unit real-time online detects the humiture of environment, and the humiture detected is real
When be transmitted to heat control unit, the heat control unit adjusts the heating unit in real time according to the humiture situation of detection
Heating-up temperature.
Beneficial effects of the present invention：PM2.5 sampling apparatuses of the present invention, can be achieved the PM2.5 particles sampling of real-time online, and
Gas flow is monitored in real time, it is ensured that be consistent, improve by the gas volume of filter mechanism in the unit interval
Detection efficiency；Dynamic heat mechanism is added, strainer in drying and processing, reduction system is first carried out to the gas for entering filter mechanism
And the ambient humidity of testing agency, effectively extend the service life of equipment.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is PM2.5 sampling apparatuses structural representation of the present invention；
Fig. 2 is sampling end portion structural representation；
Fig. 3 is filter mechanism schematic diagram.
Reference：10th, sampling end portion；11st, upper cover；111st, air inlet；112nd, weather shield；113rd, deep bead；114th, cover
Plate；12nd, the taper bucket；20th, PM2.5 cutters；30th, extension tube；40th, filter mechanism；41st, filter tip；42nd, strainer；43rd, top pressure
Machine；44th, exhaust tube；45th, driving wheel；46th, driven pulley；47th, the first runner；48th, the second runner；50th, traffic monitoring mechanism；51、
Pressure sensor；52nd, flow sensor；53rd, flow regulator；60th, vavuum pump；70th, dynamic heat mechanism；71st, heating unit；
72nd, meteorological detection unit.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
Embodiment 1
As illustrated in fig. 1 and 2, PM2.5 sampling apparatuses of the invention, including the sampling end portion 10, the PM2.5 that are sequentially connected are cut
Device 20, extension tube 30, filter mechanism 40, traffic monitoring mechanism 50, vavuum pump 60 and controller.During work, gas to be detected by
Sampling end portion 10 enters PM2.5 cutters 20, and the gas after being separated through the particle of PM2.5 cutters 20 entered through extension tube 30
Filter structure 40, the filtering enrichment PM2.5 particles on filter mechanism 40, remaining gas is through traffic monitoring mechanism 50, by vavuum pump 60
Discharge.
Wherein, sampling end portion 10 includes upper cover 11 and the taper bucket 12, if as shown in Fig. 2 the periphery of upper cover 11 is uniformly distributed
Dry air inlet 111, surrounding air is gathered from all directions, and all directions are come from the gas sample for ensureing collection.Each air inlet
Along weather shield 12 is provided with 111, prevent rainwater from entering in sampling apparatus.The taper provided with indent is kept off in the middle of the upper surface of upper cover 11
Aerofoil 113, so that the gas flow the taper bucket 12 of the inspiration of each air inlet 111；A cover plate 114 is provided with the upper surface of deep bead 113,
With shading wind and rain.The above-mentioned upper port of the taper bucket 12 is tightly connected with the upper cover 11, and lower port is sealed with above-mentioned PM2.5 cutters 20
Connection.Above-mentioned PM2.5 cutters 20 include air inlet, disengagement chamber and gas outlet, the cone of the air inlet and above-mentioned sampling end portion 10
The lower port of shape bucket 12 is tightly connected, and above-mentioned gas outlet is a conical pipe, is tightly connected with extension tube 30.
In the embodiment, filter mechanism 40 includes gas filtration mouth 41, strainer 42, high pressure apparatus 43 and strainer transmission mechanism.
As shown in figure 3, gas filtration mouth 41 is tightly connected located at the top of strainer 42 with above-mentioned extension tube 30；High pressure apparatus 43 is located at strainer
The lower section position relative with filter tip 41, and the position relative with filter tip 41 of high pressure apparatus 43 is provided with exhaust tube 44, the exhaust tube
44 are connected with above-mentioned traffic monitoring mechanism 50.Strainer transmission mechanism is then including motor, driving wheel 45, driven pulley 46 and some turns
Wheel, the first runner 47 and the second runner 48 as shown in Figure 3.Untapped strainer 42 is coiled on driven pulley 46, is bypassed successively
It is wound in after first runner 47 and the second runner 48 on driving wheel 45.Motor driving driving wheel 45 is rotated, and drives each runner
Rotated with driven pulley 46, so as to drive strainer 42 to move, carry out particulate matter enrichment next time, and the strainer 42 used is twined
On driving wheel 45.When opening filter tip 41 is filtered to be enriched with PM2.5 particles on strainer 42, in the control of controller
Under system, high pressure apparatus 43 presses strainer 42 thereon upwards, strainer 42 is close on filter tip 41, then opens filter tip 41, very
Empty pump 60 is started working, from exhaust tube 44 to lower pumping；After the gas by predetermined unit volume, vavuum pump 60 stops
Work, and filter tip 41 is closed, high pressure apparatus 43 unclamps strainer 42, starts motor driving driving wheel 45 and drives strainer 42 to move, makes
The enrichment point that PM2.5 particles have been enriched on strainer 42 is moved on the test point of detection means, while next section of strainer 42
It also is moved into the filtering richness that the position of the harvester filter tip 41 carries out the PM2.5 particles in next unit volume gas
Collection, is so constantly repeated, and realizes the PM2.5 samplings of real-time online.
Above-mentioned traffic monitoring mechanism 50 includes pressure sensor 51, flow sensor 52, flow regulator 53 and flow control
Device processed.Wherein, pressure sensor 51, flow sensor 52 and flow regulator 53 are respectively placed in the pumping of above-mentioned filter mechanism 40
On air pipe between pipe 44 and vavuum pump 60.Using pressure sensor 51 and flow sensor 52, above-mentioned mistake is passed through in monitoring in real time
The gas pressure and instantaneous delivery of filter structure 40, and Monitoring Data is transmitted to flow controller, flow controller is tied according to monitoring
Really, control flow regulator 53 maintains or adjusted flow, makes to keep constant by the gas flow of filter mechanism 40, even if unit
Keep constant by the gas volume of filter mechanism 40 in time.
Embodiment 2
It can also increase by a dynamic heat mechanism 70, as shown in figure 1, can be by the dynamic on the basis of above-described embodiment 1
Heating arrangements 70 carry out heating, drying in above-mentioned extension tube 30 to the gas in extension tube 30, reduce as far as possible and enter filtering
Gas humidity in mechanism 40 and the other devices of detecting system, so that strainer 42 and other devices of detecting system keep drying,
Avoid influenceing accuracy of detection, while also extending the service life of equipment.
Specifically, the dynamic heat mechanism 70 includes meteorological detection unit 72, heating unit 71 and heat control unit.Its
In, the meteorological real-time online of detection unit 72 detects the humiture of environment, and the humiture detected is transmitted into computer heating control in real time
Unit, heat control unit adjusts the heating-up temperature of heating unit 71 further according to the humiture situation of detection in real time.
Using the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (9)
1.PM2.5 sampling apparatuses, it is characterised in that：Including the sampling end portion (10) being sequentially connected, PM2.5 cutters (20), prolong
Long tube (30), filter mechanism (40), traffic monitoring mechanism (50), vavuum pump (60) and controller；Gas to be detected is by sampling end
Portion (10) enters PM2.5 cutters (20), and the gas after being separated through PM2.5 cutters (20) particle enters through extension tube (30)
Filter mechanism (40), the filtering enrichment PM2.5 particles on filter mechanism (40), remaining gas through traffic monitoring mechanism (50), by
Vavuum pump (60) is discharged.
2. PM2.5 sampling apparatuses according to claim 1, it is characterised in that：The sampling end portion (10) includes upper cover
And the taper bucket (12) (11)；Upper cover (11) periphery is uniformly distributed edge in some air inlets (111), each air inlet (111) and set
There is weather shield (112)；The taper deep bead (113) of indent, the deep bead (113) are provided with the middle of upper cover (11) upper surface
Upper surface is provided with a cover plate (114)；The taper bucket (12) upper port is tightly connected with the upper cover (11), lower port with it is described
PM2.5 cutters (20) are tightly connected.
3. PM2.5 sampling apparatuses according to claim 1, it is characterised in that：The PM2.5 cutters (20) include air inlet
Mouth, disengagement chamber and gas outlet；Air inlet is tightly connected with the sampling end portion (10), and gas outlet is a conical pipe, is prolonged with described
Long tube (30) is tightly connected.
4. PM2.5 sampling apparatuses according to claim 1, it is characterised in that：The filter mechanism (40) includes gas mistake
Filter tip (41), strainer (42), high pressure apparatus (43) and strainer transmission mechanism；The gas filtration mouth (41) is on strainer (42)
Side, is tightly connected with the extension tube (30)；The high pressure apparatus (43) is located at strainer (42) lower section and the filter tip (41) phase
Right, the high pressure apparatus (43) position relative with filter tip (41) is provided with exhaust tube (44)；The exhaust tube (44) and the stream
Measure monitor control mechanism (50) connection；The strainer transmission mechanism drives strainer (42) mobile.
5. PM2.5 sampling apparatuses according to claim 4, it is characterised in that：The strainer transmission mechanism includes motor, master
Driving wheel (45), driven pulley (46) and some runners；The strainer (42) coil on driven pulley (46), bypass successively each runner it
After be wound on driving wheel (45)；The motor driving driving wheel (45) rotates, and drives each runner and driven pulley (46) to rotate.
6. PM2.5 sampling apparatuses according to claim 1, it is characterised in that：Traffic monitoring mechanism (50) is passed including pressure
Sensor (51), flow sensor (52), flow regulator (53) and flow controller, the pressure sensor (51), flow are passed
Sensor (52) and flow regulator (53) are respectively placed between the exhaust tube of the filter mechanism (40) (44) and vavuum pump (60)
Air pipe on.
7. the PM2.5 sampling apparatuses according to claim any one of 1-6, it is characterised in that：Also include dynamic heat mechanism
(70), in the extension tube (30).
8. PM2.5 sampling apparatuses according to claim 7, it is characterised in that：The dynamic heat mechanism (70) includes gas
As detection unit (72), heating unit (71) and heat control unit.
9. PM2.5 sampling apparatuses according to claim 8, it is characterised in that：The meteorological detection unit (72) exists in real time
Line detects the humiture of environment, and the humiture detected is transmitted into heat control unit, the heat control unit root in real time
The heating-up temperature of the heating unit (71) is adjusted in real time according to the humiture situation of detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710530406.4A CN107179221A (en) | 2017-06-29 | 2017-06-29 | PM2.5 sampling apparatuses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710530406.4A CN107179221A (en) | 2017-06-29 | 2017-06-29 | PM2.5 sampling apparatuses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107179221A true CN107179221A (en) | 2017-09-19 |
Family
ID=59845501
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710530406.4A Pending CN107179221A (en) | 2017-06-29 | 2017-06-29 | PM2.5 sampling apparatuses |
Country Status (1)
| Country | Link |
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| CN (1) | CN107179221A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966331A (en) * | 2017-10-23 | 2018-04-27 | 中国科学院东北地理与农业生态研究所 | The harvester and method that field test soil-plant system organic pollution soil-gas exchanges |
| CN109932221A (en) * | 2017-12-15 | 2019-06-25 | 中国科学院大连化学物理研究所 | A kind of modular atmosphere sampling instrument and application |
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| CN107966331B (en) * | 2017-10-23 | 2020-08-14 | 中国科学院东北地理与农业生态研究所 | Collection system for testing soil-plant system organic pollutant soil-gas exchange |
| CN109932221A (en) * | 2017-12-15 | 2019-06-25 | 中国科学院大连化学物理研究所 | A kind of modular atmosphere sampling instrument and application |
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Application publication date: 20170919 |