CN2352949Y - Large flow rate atmosphere sampler - Google Patents
Large flow rate atmosphere sampler Download PDFInfo
- Publication number
- CN2352949Y CN2352949Y CN 98248162 CN98248162U CN2352949Y CN 2352949 Y CN2352949 Y CN 2352949Y CN 98248162 CN98248162 CN 98248162 CN 98248162 U CN98248162 U CN 98248162U CN 2352949 Y CN2352949 Y CN 2352949Y
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- China
- Prior art keywords
- cutter
- intercepter plate
- gas
- utility
- cutting apparatus
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Abstract
The utility model discloses a large flow rate atmosphere sampler. The structure of the utility model comprises a bracket, a box body, suction power, a top cap, a gas cutting apparatus and a sampling filter membrane. The gas cutting apparatus forms a barrel shape, and the middle of the gas cutting apparatus is provided with cutoff plates which are hierarchically arranged and are communicated by staggered gas outlets. The gas enters the cutting apparatus through the edge of the top cap, through graded extraction, large granules are eliminated, and the granules which are finally aggregated on the sampling filter membrane through the cutting apparatus are the granules required to be collected. The utility model with favorable selectivity and stable and reliable operation is especially suitable for collecting and monitoring granules with inhalational performance in the atmosphere, and the utility model can be widely applicable to environment monitoring departments at different levels.
Description
The utility model relates to a kind of mass flow atmospheric sampling thief, is mainly used in the monitoring to inhalable particle in the atmosphere, belongs to environmental technology field.
Environmental pollution has become the significant problem of the common concern in the whole world, and particularly along with the development of industrial economy, the atmospheric pollution in the city is more serious.Inhalable particle in the atmosphere (aerodynamic diameter is smaller or equal to the general name of 10 μ m particles) is suspended in the air for a long time, because it can directly enter the human respiratory tract, excessive suction can cause breathing problem, aggegation takes place in simultaneously this particle diffusion soon and easily, be adsorbed on the foreign matter or with other material chemically reactive, blast easily, therefore, very harmful to the mankind.As this, detect the concentration of inhalable particle in the atmosphere, for judging that air quality has crucial meaning.Disclosed in the prior art big traffic sampling device only is suitable for gathering the gas particles that particle diameter is 100 μ m, and it can not be directly used in the collection to inhalable particle in the atmosphere, can not satisfy the atmospheric surveillance requirements of one's work.
Task of the present utility model provides a kind of mass flow atmospheric sampling thief that is used for gathering atmosphere inhalable particle, can be widely used in air monitoring stations at different levels, point, industrial and mining enterprises and scientific research department carry out the mirror of inhalable particle concentration in the atmosphere and survey and the air quality evaluation, have remedied the defective of prior art.
Task of the present utility model is finished in the following manner.Mainly comprise support in the structure of the present utility model, casing, the power of bleeding, top cover and uniform flow noise elimination cavity, its feature is also to comprise a gas cutter, this gas cutter is a tubular, in tube, be arranged with the adjustable intercepter plate of effective quantity and spacing in parallel, on every layer of intercepter plate, all have the gas port that intermeshes and arrange, having staggered wireway to make between every laminate between intercepter plate communicates, top cover is fixedly mounted on the top of cutter with support connecting piece, the below of cutter is a sampling membrane, in order to collecting the inhalable particle that imports eventually through the intercepter plate Kongzui, the base of cutter is fixed on the casing above the support.
To reach the current stabilization state in order making to gather before gas enters cutter, on the madial wall of the cone barrel top cover above the cutter, to be provided with the helical annular diversion trench.
Adopts between the wireway between the intercepter plate in the cutter and intercepter plate to be threaded, movable cooperation, the air guide mouth of pipe is adjustable apart from the spacing of intercepter plate, and the particle size that can adjust final collection particle is to adapt to different needs.
On the internal layer intercepter plate of cutter, be provided with the particle collecting board, scribble silicone oil or silicone grease class adsorbent on the collecting board, in order to bigger particle is rejected in advance.
The good effect that the utility model is obtained is that it has realized instrument collection to the inhalable fine particle; In addition, change the spacing of interior intercepter plate of cutter and gas port, and the size of air guide caliber, different-grain diameter can be adapted to, particularly the collection and the concentration monitor of ultrafine particle footpath particle; Its good stability, reliable continuously, non-secondary pollution is convenient to safeguard.
What accompanying drawing 1 provided is structural representation of the present utility model.
Accompanying drawing 2 is structural representations of gas cutter.
Accompanying drawing 3 is A-A views of Fig. 2.
Below in conjunction with accompanying drawing the utility model is described further
The utility model that provides by accompanying drawing 1, the mass flow atmospheric sampling thief, comprise support 1 in the structure, casing 2 is arranged above, both are fastenedly connected, bleed power 3 and uniform flow noise elimination cavity 9 are housed in the casing 2, the bleed upper end of power 3 is provided with a taper gas collecting jar with ground-on cover plate, its top is a sampling membrane 8, the upper end of cartridge type gas cutter 4 bases and casing 2 is fixed, and is added with packoff, and gas collection top cover 6 is a cone barrel, it is fixed in cutter 4 tops by support connecting piece 5, is provided with the ring-like diversion trench 7 of spiral on the inner tube wall of top cover 6.See accompanying drawing 2, three layers of gas intercepter plate are arranged in the gas cutter, top layer is 14, middle level 15, the bottom 16, cutter is when manufacturing, after the layering processing, butt joint is got up again, interlayer is added with sealing gasket 10, intercepter plate 14,15,16 vertical view can be provided by Fig. 3 signal, gas port 18 position of opening only, every layer all inequality, be interwoven, the number of plies of intercepter plate is set by different detection requirements, is communicated with by wireway between every laminate, in Fig. 2, wireway 11,12,13, the mouth of pipe of wireway is apart from the spacing scalable of intercepter plate, wireway 11,12,13 with intercepter plate 14,15, thread connecting mode is all adopted in 16 cooperation, regulates very convenient, the size of intercepter plate gas port 8 and the caliber of wireway can be set equally on request, at internal layer intercepter plate 15,16 panel is provided with collecting board 17, scribbles similar silicone oil or silicone grease class adsorbent above, larger particles can be collected rejecting before sampling, thereby guarantee through intercepter plate 16, the gas that is passed through by wireway 11, what collect through the sampling membrane 8 of below all is satisfactory molecules again, such as the inhalable particle.
The utility model mass flow atmospheric sampling thief is particularly suitable for collection and the monitoring of particle diameter in the air less than 10 μ m inhalable particles.
Below sketch the course of work of the present utility model.When instrument is in sample states, air in the environment vertically enters in the top cover 6, under the effect of the power 3 of bleeding, make the gas constant current, inlet velocity is kept certain value, can remove the bigger particle of aerodynamic diameter, under the effect of helical annular diversion trench 7, make air form current stabilization and enter cutter, the gas port of air-flow on upper strata intercepter plate 14 enters down one deck through wireway 13, the particle that particle diameter is big has bigger kinetic energy and hits on the silicone oil collecting board of middle level, the little particle of particle diameter enters basecoat through lower floor's wireway 12 with air-flow, selected after, enter the filter membrane 8 of cutter below again through wireway 11, the particle of needs is collected on this filter membrane, under the dynamic action of bleeding, the gas behind the control of dust flows into uniform flow noise elimination cavity 9, makes it become laminar condition by turbulent flow, overcome the howling that falls gas simultaneously, at last by 19 emptyings of gas throttling hole.
This sampling thief configuration automaton, utilization throttling orifice plate principle, measure throttling orifice plate by micro-pressure sensor and adopt pressure mouth and atmospheric pressure differential, can record gas flow indirectly, the output signal of micro-pressure sensor is sent into 80C196 and is carried out A/D conversion and data processing after differential amplification, simultaneously measured value and setting value are compared, and changes the size of the power dc brushless motor speed governing voltage of bleeding according to control law, thereby reach the constant purpose of Control Flow, realize control automatically.
Claims (4)
1, a kind of mass flow atmospheric sampling thief, comprise support (1) in the structure, casing (2), the power (3) of bleeding, top cover (6) and uniform flow noise elimination cavity (9), it is characterized in that: it also comprises gas cutter (4), cutter (4) is a tubular, in tube, be provided with effective quantity, and the intercepter plate that spacing is adjustable, all have the gas port that intermeshes and arrange on every layer of intercepter plate, having staggered wireway to make between plate between intercepter plate communicates, top cover (6) is fixedly mounted on the top of cutter (4) with support connecting piece (5), the below of cutter (4) is sampling membrane (8), and the base of cutter (4) is fixedlyed connected with casing (2).
2, by the described air sampler of claim 1, it is characterized in that top cover (6) is a cone barrel, has helical annular diversion trench (7) on the tube inwall.
3, by the described air sampler of claim 1, it is characterized in that the wireway between the intercepter plate in the cutter (4) is threaded with the intercepter plate employing, the air guide mouth of pipe is adjustable apart from the spacing of intercepter plate.
4, by the described air sampler of claim 1, it is characterized in that the internal layer intercepter plate of cutter (4) is provided with particle collecting board (17), scribble silicone oil or silicone grease class adsorbent on the collecting board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98248162 CN2352949Y (en) | 1998-11-16 | 1998-11-16 | Large flow rate atmosphere sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98248162 CN2352949Y (en) | 1998-11-16 | 1998-11-16 | Large flow rate atmosphere sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2352949Y true CN2352949Y (en) | 1999-12-08 |
Family
ID=33993230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98248162 Expired - Fee Related CN2352949Y (en) | 1998-11-16 | 1998-11-16 | Large flow rate atmosphere sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2352949Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062706A (en) * | 2010-12-22 | 2011-05-18 | 北京大学 | Passive sampling device for atmospheric particulates |
| CN102221483A (en) * | 2011-06-01 | 2011-10-19 | 山东大学 | Single-particle sampler |
| 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 |
| CN102798552A (en) * | 2011-05-23 | 2012-11-28 | 佛山市环保技术与装备研发专业中心 | PM10 single-stage atmosphere sampling cutter |
| CN102890016A (en) * | 2012-05-24 | 2013-01-23 | 深圳国技仪器有限公司 | Support for air samplers |
| CN103966081A (en) * | 2014-05-09 | 2014-08-06 | 北京联合大学 | Negative-pressure filter membrane microbial sampler |
| CN105938062A (en) * | 2016-06-16 | 2016-09-14 | 北京放射性核素实验室 | Stereo sampling cabin for extra-large flow aerosol sampler |
| CN106680042A (en) * | 2015-11-09 | 2017-05-17 | 无锡中衡环境科技有限公司 | Air particulate sampler |
| CN106938168A (en) * | 2017-05-08 | 2017-07-11 | 王伟刚 | A kind of exhaust emissions and air cleaning tapping equipment |
| CN107036859A (en) * | 2016-12-22 | 2017-08-11 | 杭州克霾环保科技有限公司 | Multistage particulate matter cutter |
-
1998
- 1998-11-16 CN CN 98248162 patent/CN2352949Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062706B (en) * | 2010-12-22 | 2012-07-04 | 北京大学 | Passive sampling device for atmospheric particulates |
| CN102062706A (en) * | 2010-12-22 | 2011-05-18 | 北京大学 | Passive sampling device for atmospheric particulates |
| CN102798552A (en) * | 2011-05-23 | 2012-11-28 | 佛山市环保技术与装备研发专业中心 | PM10 single-stage atmosphere sampling cutter |
| CN102798552B (en) * | 2011-05-23 | 2014-09-03 | 佛山市环保技术与装备研发专业中心 | PM10 single-stage atmosphere sampling cutter |
| CN102221483B (en) * | 2011-06-01 | 2013-03-20 | 山东大学 | Single-particle sampler |
| CN102221483A (en) * | 2011-06-01 | 2011-10-19 | 山东大学 | Single-particle sampler |
| 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 |
| CN102890016A (en) * | 2012-05-24 | 2013-01-23 | 深圳国技仪器有限公司 | Support for air samplers |
| CN103966081A (en) * | 2014-05-09 | 2014-08-06 | 北京联合大学 | Negative-pressure filter membrane microbial sampler |
| CN103966081B (en) * | 2014-05-09 | 2015-12-09 | 北京联合大学 | A kind of negative pressure filter membrane microorganism sampler |
| CN106680042A (en) * | 2015-11-09 | 2017-05-17 | 无锡中衡环境科技有限公司 | Air particulate sampler |
| CN105938062A (en) * | 2016-06-16 | 2016-09-14 | 北京放射性核素实验室 | Stereo sampling cabin for extra-large flow aerosol sampler |
| CN107036859A (en) * | 2016-12-22 | 2017-08-11 | 杭州克霾环保科技有限公司 | Multistage particulate matter cutter |
| CN106938168A (en) * | 2017-05-08 | 2017-07-11 | 王伟刚 | A kind of exhaust emissions and air cleaning tapping equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |