CN2709035Y - Impact type grading sampler for PM10 and PM2.5 particle in air - Google Patents
Impact type grading sampler for PM10 and PM2.5 particle in air Download PDFInfo
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- CN2709035Y CN2709035Y CN 200420081248 CN200420081248U CN2709035Y CN 2709035 Y CN2709035 Y CN 2709035Y CN 200420081248 CN200420081248 CN 200420081248 CN 200420081248 U CN200420081248 U CN 200420081248U CN 2709035 Y CN2709035 Y CN 2709035Y
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- deflector
- barrier plate
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- 239000002245 particle Substances 0.000 title claims abstract description 49
- 230000004888 barrier function Effects 0.000 claims abstract description 32
- 239000012528 membrane Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 description 16
- 238000001914 filtration Methods 0.000 description 11
- 238000005070 sampling Methods 0.000 description 8
- 239000000428 dust Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 241000700605 Viruses Species 0.000 description 2
- 206010006451 bronchitis Diseases 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 101001017827 Mus musculus Leucine-rich repeat flightless-interacting protein 1 Proteins 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 208000030303 breathing problems Diseases 0.000 description 1
- 210000000621 bronchi Anatomy 0.000 description 1
- 230000002057 chronotropic effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model discloses an impact type grading sampler for pm 10 and pm 2.5 particles in air. The utility model has the structure that a cutting port cover, an air inlet, a filter screen, a connecting piece of the filter screen, a first stage guide plate, a first stage barrier plate, a first connecting piece, a second stage guide plate, a second stage barrier plate, a second connecting piece, a gridding press plate, a grid, a sealing ring, a filter membrane and an air collecting bucket which are orderly connected, wherein, the filter screen is connected with the first stage guide plate through connecting piece of the filter screen; the first stage barrier plate is connected with the second stage guide plate through the first connecting piece; the second stage barrier plate is connected with the air collecting bucket through the second connecting piece. The utility model can collect particles with the aerodynamic diameter of 10 mu m-2.5 mu m and below 2.5 mu m and has the advantage of stable collection efficiency; thus, the utility model eliminates the phenomenon of particle rebounding and particle returning to air currents.
Description
Technical field
The utility model relates to PM10 and PM2.5 particles hit formula andersen sampler in a kind of air.
Background technology
Impact sampler mainly is made of filter screen, porous impact plate, bulky grain entrapment plate and microparticle trapped material.As far back as Enviroment Hygiene and Hygiene Engineering Inst., China Preventive Medical Scien in 1991 and China Environmental Monitoring General Station PM10 particle sampler in utility model patent-a kind of air is just proposed.Along with the further intensification of people to aerosol particle understanding, find that the particle of aerodynamic diameter in 2.5 μ m～10 mu m ranges can be sucked bronchus by the people usually, having the particle that has a strong impact on to be mainly the particle of aerodynamic diameter less than 2.5 μ m to respiratory tract, is the key factor that causes breathing problem to propagate.Existing many reports are pointed out, these aerodynamic diameters are usually carrying bacterium and virus less than the fine particle of 2.5 μ m, its 80% particle can enter into the alveolar of human body, is the one of the main reasons that causes PUD D, also is China's infant bronchitis disease key factor occurred frequently.Be of the harm of prevention PM2.5 particle to human PUD D, be in particular the incidence of disease that reduces the infant bronchitis disease, some developed countries such as the U.S. just came into effect the PM2.5 standard already from 1997, China Beijing also will be at first before 2008 Olympic Games arrives, in line with international standards in the particle context of detection, it is very eager therefore to develop PM2.5 particle sampler.
Impact sampler operation principle: under the suction function of dusty gas, enter sampler at sampler, because granular size is different thereby have different momentum, air-flow will be bigger the particle detention on the entrapment plate of gradation sampler, less dust granules then can be walked around entrapment plate and arrive filtering material, on filtering material, be trapped, thereby reach the purpose of separating different dust granules.In existing impact sampler, the acceleration when air communication is crossed the porous shock plate also is subjected to stopping of entrapment plate, the filtering material of marginal flow below entrapment plate that the air-flow streamline bends and walks around entrapment plate.Smaller particles is because its light weight, inertia is little and walk around entrapment plate in company with air-flow and enter filtering material, and is trapped on filtering material, with these particulate weighing, analyses of holding back on filtering material, just can obtain to reflect the data of the PM10 of air quality.Bigger dust granules is difficult for drifting with the tide with air-flow, under certain conditions because its quality is heavy, inertia is big usually, when the flow direction of air-flow and speed flip-flop, larger particles still by the running orbit motion of former direction, so just break away from air-flow, bumps and is hunted down with entrapment plate.
General impact sampler exists particle bounce-back and particle to return to the air-flow phenomenon.So-called particle bounce-back is because the oarse-grained faster inertia force of speed during greater than the adhesive force on the surface of entrapment plate, and the bulky grain plate that will be captured bounces back in the air-flow and goes; So-called particle returns to air-flow because high velocity air will be deposited in the lip-deep bulky grain refunds of filtering material in air-flow.These two kinds of phenomenons all can have a strong impact on the accuracy of sample test and cause the instability of gradation sampler arresting efficiency.
Summary of the invention
The purpose of this utility model provides PM10 and PM2.5 particles hit formula andersen sampler in a kind of air.
It is connected with cutting flap, air inlet, screen pack, screen pack connector, first order deflector, first order barrier plate, first connector, second level deflector, second level barrier plate, second connector, grid pressing plate, grid, sealing ring, filter membrane, gas collection bucket in turn, screen pack is connected by the screen pack connector with first order deflector, first order barrier plate is connected by first connector with second level deflector, and second level barrier plate is connected by second connector with the gas collection bucket.
The utility model is traps air kinetic diameter 10 μ m～2.5 μ m and following two other particles of level of 2.5 μ m effectively, have stable arresting efficiency, have eliminated particle bounce-back and particle and have returned to the air-flow phenomenon.
The multistage elutriating apparatus of the utility model PM2.5.Be coated with on barrier plate with adhering material, filtering material adopts the stronger filter membrane of adsorptivity, eliminates existing impact sampler particle bounce-back and particle so largely and returns to problems such as air-flow phenomenon.
Description of drawings
PM10 that Fig. 1 is and PM2.5 particles hit formula andersen sampler structural representation;
Fig. 2 is the utility model deflector structure schematic diagram;
Fig. 3 is that the utility model first order is caught granular size and held back the relationship between efficiency schematic diagram;
Fig. 4 is that granular size and the schematic diagram that concerns of holding back efficient are caught in the utility model second level.
The specific embodiment
The impacting type andersen sampler of PM10 and PM2.5 particle is connected with cutting flap 1 in turn, air inlet 2, screen pack 3, screen pack connector 4, first order deflector 5, first order barrier plate 6, first connector 7, second level deflector 8, second level barrier plate 9, second connector 10, grid pressing plate 11, grid 12, sealing ring 13, filter membrane 14, gas collection bucket 15, screen pack 3 is connected by screen pack connector 4 with first order deflector 5, first order barrier plate 6 is connected by first connector 7 with second level deflector 8, and second level barrier plate 9 is connected by second connector 10 with gas collection bucket 15.
The utility model mainly contains the two-stage sample level and forms.Every grade is adopted layer that deflector is housed, and the chronotropic action by deflector reaches the dust granules of holding back different range.38 pod apertures are housed on the deflector, and pod apertures is evenly distributed on the circumference of deflector.The hole count of first order deflector and second level deflector is identical with distribution, and the aperture difference.The diameter of first order deflector pod apertures is 5mm, and the diameter of second level deflector pod apertures is 2.3mm.
Fig. 3 shows that first order sample level has reached more than 95% the arresting efficiency of 10 μ m and above particle.Fig. 4 shows that second level sample level has reached more than 90% the arresting efficiency of 2.5 μ m and above particle.Filtering filter membrane reaches more than 95% greater than the particulate of 70 nanometers, the rejection of virus diameter in the air.The utility model sampling sizer can reach the purpose of particle gradation preferably.
In Fig. 1, the pod apertures of 38 diameter 5mm is evenly distributed on the first order deflector 5.38 pod apertures are all equal to the distance of first order barrier plate 6.Screen pack can stop the particle that 100 μ m are above, reduces the influence of bulky grain to the gradation sampling.First order deflector makes the particle enter sampler have certain momentum, and the particle about 10 μ m can just strike on the first order barrier plate and is adsorbed.The particle that 10 μ m are following is because momentum is little, and no show first order barrier plate is taken out of from the space of first order barrier plate by air-flow.Be second level deflector 8 below the first order barrier plate, also be uniform-distribution with 38 pod apertures above, distribution situation is identical with first order deflector, but the diameter of pod apertures is 2.3mm.It below the deflector of the second level second level barrier plate 9, gas by first order barrier plate is forming certain flow velocity again by second level deflector, particle about aerodynamic diameter 2.5 μ m can just strike on the barrier plate of the second level, then flows out from the space of second level barrier plate with gas less than the particle of 2.5 μ m.Be filter under the barrier plate of the second level, filter is by grid pressing plate 11, filter membrane 14, and grid 12, sealing ring 13 and gas collection bucket 15 are formed.The filter membrane that the particle that comes out from second level barrier plate is filtered the device is held back.
The utility model ground floor deflector hole area is 500mm
2～1500mm
2, the distance between the ground floor deflector and first barrier plate is 1～2cm.The area of second layer deflector is 100～300mm
2, the distance between the second layer deflector and second barrier plate is 1～2cm.The shape in hole also is not limited to circle simultaneously.Can adapt to sampling under the different flow situation by changing bump distance and hole area.
Whole sampler is secondary bump gradation sampler, and the bump gradation is captured minority clashing into for the second time in the gradation process further clashing into for the first time the bulky grain that is not captured in the gradation process.Therefore the effective detention bulky grain of this gradation sampler energy has been eliminated particle bounce-back and particle to a great extent and has been returned to problems such as air-flow phenomenon and arresting efficiency instability.
Because air sampling is generally in field operation, external environment can influence the character of sample gas, thereby the flow that influences sample gas causes experimental error.The utility model andersen sampler is equipped with the intelligent vacuum pump, and after setting flow, vavuum pump can reach the stable of flow by the power that changes self, thereby has eliminated because of the unstable error that causes of flow.
Each sample level of the utility model andersen sampler can be dismantled, and samples as the single-stage sample level.
Embodiment 1
This example with the filter membrane of different materials as the filtration film.Filtering material in the existing impact sampler is the glass fibre element, finds by parallel laboratory test, and this novel sampling sizer adopts filter membrane to have better adsorptivity.Table 1 is identical sampler parallel laboratory test result under the different weather condition.
The different membrane materials of table 1 are held back effect relatively to particulate in air
| Membrane material | Fine PM2.5 (ug/m 3) | Cloudy day PM2.5 (ug/m 3) | Rainy day PM2.5 (ug/m 3) |
| Plain this sampler of filter material of glass fibre commonly used is held back than (the plain filter material of glass fibre commonly used/this sampler film) with film | 89.5 122.2 0.73 | 78.6 90.4 0.87 | 30.2 41.7 0.72 |
This example is sampled to different sampling sites with the novel sampling device, and contrast domestic and foreign literature, this sampler have effectively been held back the following particle of aerodynamic diameter 2.5um.Table 2 is the TSP and the PM2.5 value of each sampling site.
Table 2
| Sampled point | PM10(ug/m 3) | ?PM2.5(ug/m 3) | ?PM2.5/PM10(％) |
| 1# 2# 3# | 118 166 80 | ?56 ?90 ?42 | ?47.5 ?54.2 ?52.5 |
Claims (5)
1, PM10 and PM2.5 particles hit formula andersen sampler in a kind of air, it is characterized in that it is connected with cutting flap (1) in turn, air inlet (2), screen pack (3), screen pack connector (4), first order deflector (5), first order barrier plate (6), first connector (7), second level deflector (8), second level barrier plate (9), second connector (10), grid pressing plate (11), grid (12), sealing ring (13), filter membrane (14), gas collection bucket (15), screen pack (3) is connected by screen pack connector (4) with first order deflector (5), first order barrier plate (6) is connected by first connector (7) with second level deflector (8), and second level barrier plate (9) is connected by second connector (10) with gas collection bucket (15).
2, PM10 and PM2.5 particles hit formula andersen sampler in a kind of air according to claim 1 is characterized in that said ground floor deflector hole area is 500～1500mm
2
3, PM10 and PM2.5 particles hit formula andersen sampler in a kind of air according to claim 1 is characterized in that the distance between the said ground floor deflector and first barrier plate is 1～2cm.
4, PM10 and PM2.5 particles hit formula andersen sampler in a kind of air according to claim 1 is characterized in that the hole area of said second layer deflector is 100～300mm
2
5, PM10 and PM2.5 particles hit formula andersen sampler in a kind of air according to claim 1 is characterized in that the distance between the said second layer deflector and second barrier plate is 1～2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420081248 CN2709035Y (en) | 2004-07-22 | 2004-07-22 | Impact type grading sampler for PM10 and PM2.5 particle in air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420081248 CN2709035Y (en) | 2004-07-22 | 2004-07-22 | Impact type grading sampler for PM10 and PM2.5 particle in air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2709035Y true CN2709035Y (en) | 2005-07-13 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420081248 Expired - Fee Related CN2709035Y (en) | 2004-07-22 | 2004-07-22 | Impact type grading sampler for PM10 and PM2.5 particle in air |
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| Country | Link |
|---|---|
| CN (1) | CN2709035Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589937A (en) * | 2012-02-01 | 2012-07-18 | 武汉智迅创源科技发展股份有限公司 | Air monitoring and classified sampling method and device |
| CN102680349A (en) * | 2012-03-30 | 2012-09-19 | 北京盈胜泰科技术有限公司 | PM2.5 monitoring equipment |
| CN101692021B (en) * | 2009-10-21 | 2012-10-31 | 武汉市天虹仪表有限责任公司 | Single-channel multi-functional medium flow atmospheric particulate cascade sampling cutter |
| CN102798553A (en) * | 2011-05-23 | 2012-11-28 | 佛山市环保技术与装备研发专业中心 | PM2.5 (Particular Matter 2.5) single-grade atmosphere sampling cutter |
| CN104162971A (en) * | 2013-05-15 | 2014-11-26 | 科倍隆有限公司 | Screw machine and method as well as processing installation for the processing of bulk material |
| CN104535464A (en) * | 2014-12-04 | 2015-04-22 | 苏州国环环境检测有限公司 | Apparatus for detecting particles in air |
| CN109557006A (en) * | 2018-11-23 | 2019-04-02 | 河北弘顺安全技术服务有限公司 | A kind of environmental detection set and its environment detection method suitable for street lamp |
| CN112525624A (en) * | 2020-11-25 | 2021-03-19 | 江苏农林职业技术学院 | Particle capture device based on unmanned aerial vehicle flight platform |
-
2004
- 2004-07-22 CN CN 200420081248 patent/CN2709035Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101692021B (en) * | 2009-10-21 | 2012-10-31 | 武汉市天虹仪表有限责任公司 | Single-channel multi-functional medium flow atmospheric particulate cascade sampling cutter |
| CN102798553A (en) * | 2011-05-23 | 2012-11-28 | 佛山市环保技术与装备研发专业中心 | PM2.5 (Particular Matter 2.5) single-grade atmosphere sampling cutter |
| CN102798553B (en) * | 2011-05-23 | 2014-09-03 | 佛山市环保技术与装备研发专业中心 | PM2.5 (Particular Matter 2.5) single-grade atmosphere sampling cutter |
| CN102589937A (en) * | 2012-02-01 | 2012-07-18 | 武汉智迅创源科技发展股份有限公司 | Air monitoring and classified sampling method and device |
| CN102680349A (en) * | 2012-03-30 | 2012-09-19 | 北京盈胜泰科技术有限公司 | PM2.5 monitoring equipment |
| CN102680349B (en) * | 2012-03-30 | 2016-03-30 | 北京安赛博技术有限公司 | The monitoring equipment of a kind of PM2.5 |
| CN104162971A (en) * | 2013-05-15 | 2014-11-26 | 科倍隆有限公司 | Screw machine and method as well as processing installation for the processing of bulk material |
| CN104162971B (en) * | 2013-05-15 | 2017-04-12 | 科倍隆有限公司 | Screw machine and method as well as processing installation for the processing of bulk material |
| US9688003B2 (en) | 2013-05-15 | 2017-06-27 | Coperion Gmbh | Screw machine and method as well as processing installation for the processing of bulk material |
| CN104535464A (en) * | 2014-12-04 | 2015-04-22 | 苏州国环环境检测有限公司 | Apparatus for detecting particles in air |
| CN109557006A (en) * | 2018-11-23 | 2019-04-02 | 河北弘顺安全技术服务有限公司 | A kind of environmental detection set and its environment detection method suitable for street lamp |
| CN112525624A (en) * | 2020-11-25 | 2021-03-19 | 江苏农林职业技术学院 | Particle capture device based on unmanned aerial vehicle flight platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050713 Termination date: 20130722 |