CN103175712A - PM1 (Particulate Matter) jointed multi-level cutting sampling head - Google Patents
PM1 (Particulate Matter) jointed multi-level cutting sampling head Download PDFInfo
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- CN103175712A CN103175712A CN2011104359787A CN201110435978A CN103175712A CN 103175712 A CN103175712 A CN 103175712A CN 2011104359787 A CN2011104359787 A CN 2011104359787A CN 201110435978 A CN201110435978 A CN 201110435978A CN 103175712 A CN103175712 A CN 103175712A
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Abstract
The embodiment of the invention discloses a PM1 (Particulate Matter) jointed multi-level cutting sampling head. The PM1 jointed multi-level cutting sampling head adopts a laminar combined structure and comprises a cutting port cover, a PM2.5 impacting port layer, a PM2.5 impacting plate layer, a PM1 impacting port layer, a PM1 impacting plate layer, a filter membrane collecting layer and a PUF (Polyurethane Foam) collecting layer which are respectively formed from top to bottom. According to the PM1 jointed multi-level cutting sampling head, the design flow rate can reach 300L/Min, thus the actual demands of the sampling process to the flow rate and the sampling time can be met; and the PM1 aerosol particles and gaseous pollutants can be collected at the same time, so that the graded collection of the particulate matters can be realized, and the automatic control is realized under the premise that the stability and accuracy of the flow rate are met. The cutting power cover adopts circular arc shape design, thus the gas can circle round and flow into a cutting head, and as a result, the stability and the uniformity of the collected gas flow are improved.
Description
Technical field
The present invention relates to a kind of cutting sampling head, relate in particular to the conjuncted multistage cutting sampling head of a kind of PM1.
Background technology
PM1 refers to the particle of aerodynamics equivalent diameter≤1 μ m, and in pellet (inhalable particulates), PM1 can suck the human lung depths by respiratory system, and is even more serious to the harmfulness of health.PM1 is as the part of airborne pellet, should be separately as an Air Quality Evaluation index in the environmental monitoring field.
In the sample grading technology of Atmospheric particulates, main employing is to impact cutting technique, namely utilize inertia impact drive principle to carry out cascade sampling to particle, gather simultaneously PM1 and gaseous state persistence organic pollutant (being called for short POPs), just need to adopt multistage multifunctional sampling instrument.Because China is more late to the research starting of aerosol particle, the sample devices of the aerosol particle that Environmental Protection in China department uses is mostly by external introduction, domestic design and the ability of producing the multistage collecting device of gasoloid a little less than, there is no stronger competitiveness, (100L/Min or 1000L/Min) is limited for its range ability; The eight grades of impactor Sioutas Cascade Impactor of MOUDIMMI, Andersen (SKC) that commonly use in the world, its flow is only 9L/min-90L/min, and small volume, can not satisfy particulate form POPs far away and analyze desired sample size.In addition, these multistage sampling devices also all can not gather gaseous state POPs simultaneously.And the large traffic sampling device of comparatively commonly using in atmosphere POPs research, although can gather simultaneously particulate form and gaseous contaminant, the particle of its collection is also overall suspended pellet (TSP) substantially, does not realize the sample grading of particle.Also can't realize automatic control, discharge stability and accuracy are not ideal enough.
Summary of the invention
Embodiment of the present invention technical matters to be solved is, the conjuncted multistage cutting sampling head of a kind of PM1 is provided.Can reach the collection flow of 300L/Min, satisfy in sampling process the actual demand to uninterrupted and sampling time; Can gather simultaneously PM1 aerosol particle and gaseous contaminant, realize the sample grading to particle; Realize automatically controlling under the prerequisite that satisfies discharge stability and accuracy.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides the conjuncted multistage cutting sampling head of a kind of PM1, the conjuncted multistage cutting sampling head of described PM1 is the layering unitized construction, is mainly impacted by cutting lid, PM2.5 from top to bottom and chews layer, PM2.5 and impact flaggy, PM1 and impact and chew layer, PM1 and impact flaggy, filter membrane collecting layer, PUF collecting layer and form;
Described PM2.5 impacts and chews layer and described PM1 and impact and chew layer and include to impact and chew plate and be located at described impact and chew the impact of at least one group of equidistant ring shooting distribution on different-diameter on plate and chew;
It is the first right cylinder that the upper end is chewed in described impact; It is the second right cylinder that the middle part is chewed in described impact, and described the first right cylinder is connected by the first taper platform with described the second right cylinder; It is the second taper platform that the lower end is chewed in described impact, and described the second taper platform is connected with described the second right cylinder;
Described impact is chewed and is that hollow structure, its inwall are that the upper end is large, the taper platform that the lower end is little.
Preferably, described impact is chewed the upper end and is inserted for being used for the first right cylinder that plate is chewed in described impact, and the described first cylindrical external diameter is that 14-24 mm, internal diameter are 6-12mm, is highly 9-15 mm;
It is the second right cylinder that the middle part is chewed in described impact, and the described second cylindrical external diameter is 14-18mm, is highly 18-25mm;
Described the first right cylinder and described the second right cylinder by diameter from top to bottom linear described the first taper platform that reduces be connected, the height of described the first taper platform is 2-6mm; The described second cylindrical external diameter is identical with the lower end external diameter of described the first taper platform;
It is diameter linear described the second taper platform that reduces from top to bottom that the lower end is chewed in described impact, and the lower end external diameter of described the second taper platform is 4-10mm, and bottom diameter is 3-8mm, and the upper end external diameter of described the second taper platform is identical with the described second cylindrical external diameter;
Described impact is chewed and is that hollow structure, its inwall are that upper-end inner diameter is 6-12mm, and bottom diameter is the taper platform of 3-8mm.
Preferably, to chew the number that described in plate, impact is chewed be 10-30 in described impact.
Preferably, described cutting lid is circular-arc top cover.
Preferably, described PM2.5 impacts flaggy and comprises PM2.5 shock plate and PM2.5 support, and the PM2.5 circular groove that described PM2.5 shock plate is upper end open, the height of described PM2.5 circular groove are 45-70mm, and outside dimension is 300-400mm, and internal diameter size is 150-250mm;
Described PM2.5 support comprises the horizontal backing plate of PM2.5 and at least 3 bayonet sockets that are used for the fixing horizontal backing plate of described PM2.5.
Preferably, described PM1 impacts flaggy and comprises PM1 shock plate and PM1 support, and the PM1 circular groove that described PM1 shock plate is upper end open, the height of described PM1 circular groove are 25-35mm, and outside dimension is 250-350mm, and internal diameter size is 150-250mm;
Described PM1 support comprises the horizontal backing plate of PM1 and at least 3 bayonet sockets that are used for the fixing horizontal backing plate of described PM1.
Preferably, described PM1 impacts and chews layer distance that arrives described PM1 impact flaggy between 1-4mm.
Preferably, center, described filter membrane collecting layer is the rectangle filter screen, described rectangle filter screen surrounding sealing.
Preferably, described PUF collecting layer comprises cylindrical tube, and coordinates with described cylindrical tube, is movably installed in the glass cylinder on described cylindrical tube.
Preferably, connect by four groups of box fasteners between every layer of the conjuncted multistage cutting sampling head of described PM1.
Implement the embodiment of the present invention, have following beneficial effect: the conjuncted multistage cutting sampling head of PM1 of the present invention can gather PM1 aerosol particle and gaseous contaminant (for example air Pesticides, polychlorinated biphenyl and polynuclear aromatics) simultaneously, realization realizes automatically controlling to the sample grading of particle with under the prerequisite that satisfies discharge stability and accuracy, and is specific as follows:
At first, the unitary tapered design that impact is chewed and tapering can guarantee the impulsive force of air-flow, the arrangement that impact is chewed and number are unique, add the PM1 impact and chew the impact distance of PM1 impact flaggy between 1-4mm, impact distance is preferably between 2mm-3mm, guarantees that the cutting particle diameter of atmosphere meets designing requirement.Therefore, the present invention chews inner conical design and the accurate measure of impact distance by impact, makes the cutting particle diameter more accurate, and airborne target particles thing is issued to the target of accurate layering in the inertial impact force cutting, can effectively improve collection efficiency;
Secondly, principle of hydrodynamics is satisfied in the circular-arc design of cutting lid, makes the gas convolution enter cutting head, makes the air-flow of collection more stable, even, and the energy waterproof; The cutting lid evenly increases for radius from top to bottom, is conducive to that in sampling process, non-target bulky grain thing and rainwater enter the sampling system device, also is beneficial to security and aesthetic property that instrument is carried simultaneously;
Again, design discharge of the present invention can reach 300L/Min, the characteristics that multi-staged air sampling thief in the past is middle low discharge have been broken through, flow design standard in 300L/min can satisfy the sample requirement of persistence organic pollutant (be called for short POPs), satisfies simultaneously in sampling process the actual demand to uninterrupted and sampling time.
Description of drawings
Fig. 1 is the structural representation of the conjuncted multistage cutting sampling head of a kind of PM1 of the present invention;
Fig. 2 is that structural representation is chewed in the impact of the conjuncted multistage cutting sampling head of a kind of PM1 of the present invention;
Fig. 3 is that a layer structural representation chewed in the PM2.5 impact of the conjuncted multistage cutting sampling head of a kind of PM1 of the present invention;
Fig. 4 is that a layer structural representation chewed in the PM1 impact of the conjuncted multistage cutting sampling head of a kind of PM1 of the present invention;
Fig. 5 is that the PM2.5 of the conjuncted multistage cutting sampling head of a kind of PM1 of the present invention impacts the flaggy structural representation;
Fig. 6 is that the PM1 of the conjuncted multistage cutting sampling head of a kind of PM1 of the present invention impacts the flaggy structural representation.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
As Figure 1-Figure 4, the conjuncted multistage cutting sampling head of a kind of PM1, the conjuncted multistage cutting sampling head of described PM1 is the layering unitized construction, mainly impacted by cutting lid 1, PM2.5 from top to bottom and chew layer 2, PM2.5 and impact flaggy 3, PM1 and impact and chew layer 4, PM1 and impact flaggy 5, filter membrane collecting layer 6, PUF collecting layer and form 7
Described PM2.5 impacts and chews layer 2 and described PM1 and impact and chew layer 4 and include to impact and chew plate and be located at least one group of impact that equidistant ring shooting distributes on different-diameter that described impact chews on plate and chew 23;
It is the first right cylinder 231 that 23 upper ends are chewed in described impact; It is the second right cylinder 233 that 23 middle parts are chewed in described impact, and described the first right cylinder 231 is connected by the first taper platform 232 with described the second right cylinder 233; It is the second taper platform 234 that 23 lower ends are chewed in described impact, and described the second taper platform 234 is connected 233 with described the second right cylinder;
Described impact is chewed 23 and is hollow structure, and its inwall is that the upper end is large, the taper platform 235 that the lower end is little.
Preferably, described impact is chewed 23 upper ends and is inserted for being used for the first right cylinder 231 that plate is chewed in described impact, and the external diameter of described the first right cylinder 231 is that 14-24 mm, internal diameter are 6-12mm, is highly 9-15 mm;
It is the second right cylinder 233 that the middle part is chewed in described impact, and the external diameter of described the second right cylinder 233 is 14-18mm, is highly 18-25mm;
Described the first right cylinder 231 and described the second right cylinder 233 by diameter from top to bottom linear described the first taper platform 232 that reduces be connected, the height of described the first taper platform 232 is 2-6mm; The external diameter of described the second right cylinder 233 is identical with the lower end external diameter of described the first taper platform 232;
It is diameter linear described the second taper platform 232 that reduces from top to bottom that 23 lower ends are chewed in described impact, the lower end external diameter of described the second taper platform 232 is 4-10mm, bottom diameter is 3-8mm, and the upper end external diameter of described the second taper platform 232 is identical with the external diameter of described the second right cylinder 233;
Described impact is chewed 23 and is hollow structure, and its inwall is that upper-end inner diameter is 6-12mm, and bottom diameter is the taper platform 235 of 3-8mm.
It is between 390-410mm that plate 21 diameters are chewed in the PM2.5 impact, about diameter 300mm left and right and diameter 250mm, the uniform circular groove 22 of twice is arranged, the groove radius of both correspondences is respectively about 15mm and 20mm, the connector 24 that it is 5-7mm that diameter 40-50mm position has into three diameters of equilateral triangle is used for fixing cutting lid and shock plate.
Need to prove, described circular groove is arc groove.
It is between 390-410mm that plate 41 diameters are chewed in the PM1 impact, about diameter 310mm left and right and diameter 220mm, the uniform circular groove 42 of twice is arranged, the groove radius of both correspondences is respectively about 15mm and 20mm, the connector 44 that it is 5-7mm that diameter 40-50mm position has into three diameters of equilateral triangle is used for fixing cutting lid and shock plate.Impact is chewed 23 and is chewed the surperficial one-tenth three circle arrangements of plate perpendicular to described PM1 impact, and diameter is respectively about 300mm, 200mm and 100mm, and every circle impact is chewed 23 one-tenth and equidistantly arranged.
Described impact is chewed described in plate and to be impacted that to chew 23 number be 10-30.
Preferably, described impact is chewed described in plate and to be impacted that to chew 23 number be 18-20.
Described cutting lid 1 is circular-arc top cover.The top cover of this shape is conducive to avoid that in sampling process, non-target bulky grain thing and rainwater enter the sampling system device, also is beneficial to security and the aesthetic property of instrument carrying simultaneously; It is basically identical that the flaggy outside dimension is impacted in cutting lid lower end outside dimension and lower end.
Described PM2.5 impacts flaggy 3 and comprises PM2.5 shock plate 31 and PM2.5 support 32, described PM2.5 shock plate 31 is the PM2.5 circular groove of upper end open, described PM2.5 support comprises the horizontal backing plate 321 of PM2.5 and at least 3 the first bayonet sockets 322 that are used for the fixing horizontal backing plate of described PM2.5, the height of described PM2.5 circular groove is 45-70mm, outside dimension is 300mm-400mm, and internal diameter size is 150mm-250mm.
Preferably, the height of described PM2.5 circular groove is 58-60mm, and outside dimension is 350mm, and internal diameter size is 220mm, wall thickness 3MM.
Described PM1 impacts flaggy 5 and comprises PM1 shock plate 51 and PM1 support 52, described PM1 shock plate 51 is the PM1 circular groove of upper end open, described PM1 support 52 comprises the horizontal backing plate 521 of PM1 and at least 3 the second bayonet sockets 522 that are used for the fixing horizontal backing plate of described PM1, the height of described PM1 circular groove is 25-35mm, outside dimension is 250-350mm, and internal diameter size is 150-250mm.
Preferably, the height of described PM1 circular groove is 28-30mm, and outside dimension is 300mm, and internal diameter size is 200mm, wall thickness 3mm.
Described PM1 impact is chewed layer 2 and is impacted the distance of flaggy 3 between 1-4mm to described PM1.
Preferably, described PM1 impact is chewed layer 2 and is arrived the distance of described PM1 impact flaggy 3 between 2-3mm.
Between described filter membranous layer 6 external diameter 290-310 mm, height is in the 450mm left and right, and the center is rectangle filter screen 61, the surrounding sealing, and filter screen 61 length 80-100mm, width is between 150-180mm.
Described PUF collects, and 7 comprise cylindrical tube 71, and coordinate with described cylindrical tube 71, are movably installed in the glass cylinder on described cylindrical tube 71.Described cylindrical 71 built-in pipe diameters are between 80-100mm, and height can seal after loading onto supporting glass cylinder between 120-130mm fully.
Connect by four groups of box fasteners 8 between every layer of the conjuncted multistage cutting sampling head of described PM1.
Above disclosed is only a kind of preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (10)
1. conjuncted multistage cutting sampling head of PM1, it is characterized in that, the conjuncted multistage cutting sampling head of described PM1 is the layering unitized construction, is mainly impacted by cutting lid, PM2.5 from top to bottom and chews layer, PM2.5 and impact flaggy, PM1 and impact and chew layer, PM1 and impact flaggy, filter membrane collecting layer, PUF collecting layer and form;
Described PM2.5 impacts and chews layer and described PM1 and impact and chew layer and include to impact and chew plate and be located at described impact and chew the impact of at least one group of equidistant ring shooting distribution on different-diameter on plate and chew;
It is the first right cylinder that the upper end is chewed in described impact; It is the second right cylinder that the middle part is chewed in described impact, and described the first right cylinder is connected by the first taper platform with described the second right cylinder; It is the second taper platform that the lower end is chewed in described impact, and described the second taper platform is connected with described the second right cylinder;
Described impact is chewed and is that hollow structure, its inwall are that the upper end is large, the taper platform that the lower end is little.
2. the conjuncted multistage cutting sampling head of PM1 as claimed in claim 1, it is characterized in that, described impact is chewed the upper end and is inserted for being used for the first right cylinder that plate is chewed in described impact, and the described first cylindrical external diameter is that 14-24 mm, internal diameter are 6-12mm, is highly 9-15 mm;
It is the second right cylinder that the middle part is chewed in described impact, and the described second cylindrical external diameter is 14-18mm, is highly 18-25mm;
Described the first right cylinder and described the second right cylinder by diameter from top to bottom linear described the first taper platform that reduces be connected, the height of described the first taper platform is 2-6mm; The described second cylindrical external diameter is identical with the lower end external diameter of described the first taper platform;
It is diameter linear described the second taper platform that reduces from top to bottom that the lower end is chewed in described impact, and the lower end external diameter of described the second taper platform is 4-10mm, and bottom diameter is 3-8mm, and the upper end external diameter of described the second taper platform is identical with the described second cylindrical external diameter;
Described impact is chewed and is that hollow structure, its inwall are that upper-end inner diameter is 6-12mm, and bottom diameter is the taper platform of 3-8mm.
3. the conjuncted multistage cutting sampling head of PM1 as claimed in claim 1, is characterized in that, it is 10-30 that the number that described in plate, impact is chewed is chewed in described impact.
4. the conjuncted multistage cutting sampling head of PM1 as claimed in claim 1, is characterized in that, described cutting lid is circular-arc top cover.
5. the conjuncted multistage cutting sampling head of PM1 as claimed in claim 1, it is characterized in that, described PM2.5 impacts flaggy and comprises PM2.5 shock plate and PM2.5 support, the PM2.5 circular groove that described PM2.5 shock plate is upper end open, the height of described PM2.5 circular groove is 45-70mm, outside dimension is 300-400mm, and internal diameter size is 150-250mm;
Described PM2.5 support comprises the horizontal backing plate of PM2.5 and at least 3 bayonet sockets that are used for the fixing horizontal backing plate of described PM2.5.
6. the conjuncted multistage cutting sampling head of PM1 as claimed in claim 1, it is characterized in that, described PM1 impacts flaggy and comprises PM1 shock plate and PM1 support, the PM1 circular groove that described PM1 shock plate is upper end open, the height of described PM1 circular groove is 25-35mm, outside dimension is 250-350mm, and internal diameter size is 150-250mm;
Described PM1 support comprises the horizontal backing plate of PM1 and at least 3 bayonet sockets that are used for the fixing horizontal backing plate of described PM1.
7. the conjuncted multistage cutting sampling head of PM1 as claimed in claim 1, is characterized in that, described PM1 impacts and chews layer distance that arrives described PM1 impact flaggy between 1-4mm.
8. the conjuncted multistage cutting sampling head of PM1 as claimed in claim 1, is characterized in that, center, described filter membrane collecting layer is the rectangle filter screen, described rectangle filter screen surrounding sealing.
9. the conjuncted multistage cutting sampling head of PM1 as claimed in claim 1, is characterized in that, described PUF collecting layer comprises cylindrical tube, and coordinates with described cylindrical tube, is movably installed in the glass cylinder on described cylindrical tube.
10. the conjuncted multistage cutting sampling head of PM1 as claimed in claim 1, is characterized in that, connects by four groups of box fasteners between every layer of the conjuncted multistage cutting sampling head of described PM1.
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| CN201110435978.7A CN103175712B (en) | 2011-12-23 | 2011-12-23 | PM1 (Particulate Matter) jointed multi-level cutting sampling head |
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| CN201110435978.7A CN103175712B (en) | 2011-12-23 | 2011-12-23 | PM1 (Particulate Matter) jointed multi-level cutting sampling head |
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| CN106018154A (en) * | 2016-07-16 | 2016-10-12 | 河南省计量科学研究院 | Atmospheric particulate matter monitoring device |
| CN107525691A (en) * | 2017-08-21 | 2017-12-29 | 河南鑫安利安全科技股份有限公司 | One kind is used for dust sampling and processing unit |
| CN108844786A (en) * | 2018-06-26 | 2018-11-20 | 重庆交通大学 | A kind of multistage series-parallel modularization sub-micron big flow collector |
| CN109073523A (en) * | 2016-01-13 | 2018-12-21 | 亲切消费者有限公司 | Cascade impactor plate coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109073523A (en) * | 2016-01-13 | 2018-12-21 | 亲切消费者有限公司 | Cascade impactor plate coating |
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| CN108844786A (en) * | 2018-06-26 | 2018-11-20 | 重庆交通大学 | A kind of multistage series-parallel modularization sub-micron big flow collector |
| CN108844786B (en) * | 2018-06-26 | 2020-09-11 | 重庆交通大学 | Multistage series-parallel modular submicron large-flow collector |
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| Publication number | Publication date |
|---|---|
| CN103175712B (en) | 2015-06-17 |
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