CN201583435U - PM10 particle impact type single-stage sampler - Google Patents
PM10 particle impact type single-stage sampler Download PDFInfo
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- CN201583435U CN201583435U CN2009203500827U CN200920350082U CN201583435U CN 201583435 U CN201583435 U CN 201583435U CN 2009203500827 U CN2009203500827 U CN 2009203500827U CN 200920350082 U CN200920350082 U CN 200920350082U CN 201583435 U CN201583435 U CN 201583435U
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Abstract
The utility model discloses a PM (Particle Matter)10 particle impact type single-stage sampler, which mainly comprises an inlet filter screen, an air inlet, an impact plate, a connecting piece, a filter paper collecting plate, a sealing washer, a support filtering screen and a base. During collection, a sucking pump is connected to an air outlet of the base; and airflow carrying particle matters is injected through a spray nozzle of the air inlet and then is stopped by the impact plate to do curved motion so as to keep away from a barrier. When the airflow turns, all particle matters with different sizes in the airflow have the trend of keeping the linear motion in the original direction caused by the inertia action. The diameters of the particle matters are larger, the momentum of the particle matters is larger, so that the inertia of the particle matters is larger and the distance for impact force is longer, i.e. the cutoff distance of the particle matters is longer. The particle matters the cutoff distance of which is larger to a certain extent, i.e. the particle maters the particle diameter of which is larger to a certain extent possibly and straightly impact to the impact plate so as to be captured by the impact plate. Smaller particles can reach the filter paper collecting plate along with the airflow so as to be collected and used as a detecting sample for analysis. The utility model can effectively collect aerosol particles the particle diameters of which are less than 10mu m and has stable acquisition efficiency.
Description
Technical field
The utility model relates to sampling apparatus, and specifically a kind of particles hit formula single-stage sampling apparatus belongs to the device of a kind of PM10 of the collection particulate matter in the field of analytic instrument, can be multiple analytical instrument analytic sample is provided.
Background technology
Along with industrial expansion, the particulate pollutant degree in the atmosphere constantly increases.These particulate pollutants can damage nervous system and carcinogenic various objectionable impuritiess in the absorbed air, propagate in air.In a single day these particles that are adsorbed with harmful substances enter our respiratory system, or are penetrated into people's lung, can cause the various respiratory tract disease, bring a lot of negative effects for environment and human health.Compare, the floating life-span of coarse particle in atmosphere that diameter is bigger is very short, and particle diameter is less than the easier human body that enters of small particle (PM10) of 10um, and the hold-up time is longer in environment, the heavy metal and the poisonous and harmful substance of absorption are more, thereby also bigger to the harm of human body.And the often more difficult collection of the particle of small particle diameter, it is very eager therefore to develop the small particle gathering-device.
The principle of work of impact sampler is: the airflow of carrier band particle is after the air intake opening nozzle penetrates, and stopping of plate will move along a curved path to get around barrier owing to being collided.When air-flow took place to turn, all big or small particles all had to keep straight-line trend on original direction because of its inertia effect in the air-flow.The particle diameter is big more, and its momentum is big more, thereby the inertia that is had is also big more, and the distance of preshoot is also long more, and promptly particle is long more by distance.End the big particle that arrives to a certain degree of distance, promptly particle diameter arrives particle to a certain degree greatly, might be flushed on the shock plate always, thereby be captured by shock plate.And smaller particle can be followed air-flow arrival filter paper collector and is collected, and analyzes as test sample.
The structure more complicated of existing P M10 and PM2.5 collision sampling thief adopts multistagely more, and the mechanism in porous road removes and installs more complicated, and particle bounce-back and particle take place, and to return to the air-flow phenomenon more serious.
The utility model content
The purpose of this utility model provides a kind of PM10 particles hit formula single-stage sampling thief; It can realize the particulate less than 10um is sampled, and can be multiple analytical instrument sampling;
For achieving the above object, the technical solution used in the present invention is:
A kind of PM10 particles hit formula single-stage sampling thief comprises air intake opening, web member, base,
Base is the tubular structure of upper end open, and the sidewall or the bottom surface of tubular structure are provided with the gas outlet; Web member is arranged at the top of base, and air intake opening is arranged at the top of web member, air intake opening, web member, base) between be removable imperial connection;
Described air intake opening is the tubular structure of both ends open, and the internal cavity of porch, upper end is small top and big bottom, taper type or tubaeform, and the nozzle at middle part is a column type or square, and the radial dimension of the internal cavity in exit, lower end is greater than the radial dimension of nozzle; Porch at air intake opening is provided with intake screen;
Web member is a ring texture, is provided with carriage or hook on the madial wall of ring-type, and carriage or hook are placed with impingement plate, impingement plate be in nozzle under, impingement plate is the disk-like structure that upper center has groove;
The top of base is provided with inner stopper, and inner stopper is placed with packing washer from bottom to up successively, supports filter screen and filter paper collector, and web member is pressed together on the inner stopper of base.
The nozzle of described air intake opening axially should be more than or equal to 1 with the ratio of radial dimension; The radial dimension of impingement plate is 2-4 with the ratio of the radial dimension of nozzle; The nozzle of described air intake opening should be greater than 1 with the diameter ratio of nozzle to the distance of impingement plate; Gas flow by air intake opening should be 10-25L/min.
The both sides of impingement plate are provided with height-adjustable clip, the adjustable height of itself and nozzle; Scribble adhesion material on the impingement plate; Described filter paper collector adopts gas penetration potential better, and solid is held back than good filter membrane material and made, as the Teflon filter membrane.
When gathering, connect aspiration pump at the place, gas outlet of base, the airflow of carrier band particle is after the air intake opening nozzle penetrates, and stopping of plate will move along a curved path to get around barrier owing to being collided.When air-flow took place to turn, all big or small particles all had to keep straight-line trend on original direction because of its inertia effect in the air-flow.The particle diameter is big more, and its momentum is big more, thereby the inertia that is had is also big more, and the distance of preshoot is also long more, and promptly particle is long more by distance.End the big particle that arrives to a certain degree of distance, promptly particle diameter arrives particle to a certain degree greatly, might be flushed on the shock plate always, thereby be captured by shock plate.And smaller particle can be followed air-flow arrival filter paper collector and is collected, and analyzes as test sample.The utility model can effectively be collected the aerosol particle less than 10um, has stable collecting efficiency.
The utility model adopts single-stage but nozzle arrangements is simple in structure, is easy to dismounting.Adhesion material on the impingement plate can effectively reduce the particle rebound phenomena.Filter membrane adopts good permeability to hold back than high filter membrane material, effectively avoids the air-flow reentry phenomenon of particle.
Description of drawings
Fig. 1 is a structural representation of the present invention;
1 is intake screen among the figure, and 2 is air intake opening, and 3 is impingement plate, and 4 is web member, and 5 is the filter paper collector, and 6 is packing washer, and 7 for supporting filter screen, and 8 is base.
Embodiment
See also shown in Figure 1.A kind of PM10 particles hit of the utility model formula single-stage sampling thief, its primary structure is followed successively by from top to bottom: intake screen, air intake opening, impingement plate, web member, the filter paper collector supports filter screen, packing washer, and base constitutes.
Base 8 is the tubular structure of upper end open, and the sidewall or the bottom surface of tubular structure are provided with the gas outlet; Web member 4 is arranged at the top of base 8, and air intake opening 2 is arranged at the top of web member 4, and 8 of air intake openings 2, web member 4, base connect by bolt;
Described air intake opening 2 is the tubular structure of both ends open, the internal cavity of porch, upper end is small top and big bottom, taper type or tubaeform, the nozzle at middle part is a column type or square, and the radial dimension of the internal cavity in exit, lower end is greater than the radial dimension of nozzle; Be provided with intake screen 1 in the porch of air intake opening 2;
The top of base 8 is provided with inner stopper, and inner stopper is placed with packing washer 6 from bottom to up successively, supports filter screen 7 and filter paper collector 5, and web member 4 is pressed together on the inner stopper of base 8.
The nozzle of described air intake opening be 1.8 axially with the ratio of radial dimension; The radial dimension of impingement plate 3 is 3 with the ratio of the radial dimension of nozzle; The nozzle of air intake opening should be greater than 1.5 with the diameter ratio of nozzle to the distance of impingement plate.
Gas flow by air intake opening should be 10-25L/min.
The both sides of impingement plate 3 are provided with height-adjustable clip, the adjustable height of itself and nozzle; Scribble adhesion material on the impingement plate.
The filter paper collector adopts gas penetration potential better, and solid is held back than good filter membrane material and made, as the Teflon filter membrane.
When the air of carrier band particle broke the barriers, particle was followed the streamline of fluid or is separated mainly with streamline and determined by stokes number.Work as S
t＜＜1 o'clock, the charged aerosol particle can be followed the streamline of gas, and at this moment the trajectory of streamline and particle overlaps.Work as S
t＞＞1 o'clock, the trajectory of particle was separated with streamline, and particle can keep the trace of oneself to travel forward.When the charged aerosol particle passed through nozzle, its stokes number was:
Wherein, ρ
pBe the charged aerosol Particle Density, d
pBe particle diameter, U is the gas velocity at nozzle place, and η is a gas viscosity, D
0Be hole diameter.
The airflow of carrier band particle is after the air intake opening nozzle penetrates, and stopping of plate will move along a curved path to get around barrier owing to being collided.When air-flow took place to turn, all big or small particles all had to keep straight-line trend on original direction because of its inertia effect in the air-flow.The particle diameter is big more, and its momentum is big more, thereby the inertia that is had is also big more, and the distance of preshoot is also long more, and promptly particle is long more by distance.End the big particle that arrives to a certain degree of distance, promptly particle diameter arrives particle to a certain degree greatly, might be flushed on the shock plate always, thereby be captured by shock plate.And smaller particle can be followed air-flow arrival filter paper collector and is collected, and analyzes as test sample.
Claims (6)
1. PM10 particles hit formula single-stage sampling thief is characterized in that:
Comprise air intake opening (2), web member (4), base (8),
Base (8) is the tubular structure of upper end open, and the sidewall or the bottom surface of tubular structure are provided with the gas outlet; Web member (4) is arranged at the top of base (8), and air intake opening (2) is arranged at the top of web member (4), is removable imperial connection between air intake opening (2), web member (4), base (8);
Described air intake opening (2) is the tubular structure of both ends open, the internal cavity of porch, upper end is small top and big bottom, taper type or tubaeform, the nozzle at middle part is a column type or square, and the radial dimension of the internal cavity in exit, lower end is greater than the radial dimension of nozzle; Be provided with intake screen (1) in the porch of air intake opening (2);
Web member (4) is a ring texture, is provided with carriage or hook on the madial wall of ring-type, and carriage or hook are placed with impingement plate (3), impingement plate (3) be in nozzle under, impingement plate (3) has the disk-like structure of groove for upper center;
The top of base (8) is provided with inner stopper, and inner stopper is placed with packing washer (6) from bottom to up successively, supports filter screen (7) and filter paper collector (5), and web member (4) is pressed together on the inner stopper of base (8).
2. sampling thief as claimed in claim 1 is characterized in that: the nozzle of described air intake opening axially should be more than or equal to 1 with the ratio of radial dimension; The radial dimension of impingement plate (3) is 2-4 with the ratio of the radial dimension of nozzle.
3. sampling thief as claimed in claim 1 is characterized in that: the nozzle of described air intake opening should be greater than 1 with the diameter ratio of nozzle to the distance of impingement plate.
4. sampling thief as claimed in claim 1 is characterized in that: the gas flow by air intake opening should be 10-25L/min.
5. sampling thief as claimed in claim 1 is characterized in that: the both sides of impingement plate (3) are provided with height-adjustable clip, the adjustable height of itself and nozzle; Scribble adhesion material on the impingement plate.
6. sampling thief as claimed in claim 1 is characterized in that: described filter paper collector adopts gas penetration potential better, and solid is held back than good filter membrane material and made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203500827U CN201583435U (en) | 2009-12-23 | 2009-12-29 | PM10 particle impact type single-stage sampler |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920288351.1 | 2009-12-23 | ||
| CN2009203500827U CN201583435U (en) | 2009-12-23 | 2009-12-29 | PM10 particle impact type single-stage sampler |
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| Publication Number | Publication Date |
|---|---|
| CN201583435U true CN201583435U (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203500827U Expired - Fee Related CN201583435U (en) | 2009-12-23 | 2009-12-29 | PM10 particle impact type single-stage sampler |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243147A (en) * | 2011-04-20 | 2011-11-16 | 中山大学 | Percussive ultrafine particle cutting device |
| CN102890021A (en) * | 2011-07-22 | 2013-01-23 | 北京汇***经济技术开发有限公司 | Sample feeding device for nuclear biochemical aerosol joint monitoring and alarming system |
| CN104006991A (en) * | 2014-06-04 | 2014-08-27 | 武汉市天虹仪表有限责任公司 | Membrane supporter for containing smoke sampling filter membrane |
| CN105890526A (en) * | 2014-09-09 | 2016-08-24 | 西南科技大学 | Micro sheet-shaped particle sampling device capable of layered buffering |
| CN105954067A (en) * | 2016-04-26 | 2016-09-21 | 中南大学 | Sampling film and method for detection and analysis of iron ore sintering flue gas ultrafine particles by using sampling film |
| CN107238558A (en) * | 2017-06-23 | 2017-10-10 | 南京工业大学 | A kind of Multifunctional particulate matter sampling apparatus based on CCD/CMOS chips |
| CN108613847A (en) * | 2016-12-10 | 2018-10-02 | 中国科学院大连化学物理研究所 | A kind of air sampler increasing acquisition flow |
| 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 |
| CN111999221A (en) * | 2020-08-20 | 2020-11-27 | 南华大学 | Impact distance adjustable inertial impactor and dust concentration measuring method |
| CN113310853A (en) * | 2020-02-27 | 2021-08-27 | 北京慧荣和科技有限公司 | Aerodynamic particle size testing device |
| CN114260187A (en) * | 2021-12-21 | 2022-04-01 | 优缇智能科技（苏州）有限公司 | Aerosol sorting and generating device |
-
2009
- 2009-12-29 CN CN2009203500827U patent/CN201583435U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243147B (en) * | 2011-04-20 | 2014-07-16 | 中山大学 | Percussive ultrafine particle cutting device |
| CN102243147A (en) * | 2011-04-20 | 2011-11-16 | 中山大学 | Percussive ultrafine particle cutting device |
| CN102890021A (en) * | 2011-07-22 | 2013-01-23 | 北京汇***经济技术开发有限公司 | Sample feeding device for nuclear biochemical aerosol joint monitoring and alarming system |
| CN102890021B (en) * | 2011-07-22 | 2014-12-31 | 北京汇***经济技术开发有限公司 | Sample feeding device for nuclear biochemical aerosol joint monitoring and alarming system |
| CN104006991A (en) * | 2014-06-04 | 2014-08-27 | 武汉市天虹仪表有限责任公司 | Membrane supporter for containing smoke sampling filter membrane |
| CN104006991B (en) * | 2014-06-04 | 2017-03-29 | 武汉市天虹仪表有限责任公司 | A kind of film support for placing smoke dust sampling filter membrane |
| CN105890526B (en) * | 2014-09-09 | 2018-11-02 | 西南科技大学 | A kind of small sheet-like particle sampling apparatus of layered buffer |
| CN105890526A (en) * | 2014-09-09 | 2016-08-24 | 西南科技大学 | Micro sheet-shaped particle sampling device capable of layered buffering |
| CN105954067A (en) * | 2016-04-26 | 2016-09-21 | 中南大学 | Sampling film and method for detection and analysis of iron ore sintering flue gas ultrafine particles by using sampling film |
| CN108613847A (en) * | 2016-12-10 | 2018-10-02 | 中国科学院大连化学物理研究所 | A kind of air sampler increasing acquisition flow |
| CN107238558A (en) * | 2017-06-23 | 2017-10-10 | 南京工业大学 | A kind of Multifunctional particulate matter sampling apparatus based on CCD/CMOS chips |
| 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 |
| CN113310853A (en) * | 2020-02-27 | 2021-08-27 | 北京慧荣和科技有限公司 | Aerodynamic particle size testing device |
| CN111999221A (en) * | 2020-08-20 | 2020-11-27 | 南华大学 | Impact distance adjustable inertial impactor and dust concentration measuring method |
| CN114260187A (en) * | 2021-12-21 | 2022-04-01 | 优缇智能科技（苏州）有限公司 | Aerosol sorting and generating device |
| CN114260187B (en) * | 2021-12-21 | 2024-01-30 | 优缇智能科技（苏州）有限公司 | Aerosol sorting and generating device |
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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: 20100915 Termination date: 20121229 |