CN103398878B - A kind of passive type air sampler - Google Patents
A kind of passive type air sampler Download PDFInfo
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- CN103398878B CN103398878B CN201310356702.9A CN201310356702A CN103398878B CN 103398878 B CN103398878 B CN 103398878B CN 201310356702 A CN201310356702 A CN 201310356702A CN 103398878 B CN103398878 B CN 103398878B
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- adsorption cover
- type air
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- air sampler
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Abstract
The invention discloses a kind of passive type air sampler, adsorption cover has been established in main adsorbent box upper cover, the lower inner wall of the intrinsic via layer of adsorption cover, porous guard shield and adsorption cover body defines purification chamber, and via layer, gland bonnet and upper inside wall define the accommodating cavity of accommodating additional adsorbent.The invention also discloses another kind of passive type air sampler, comprise the adsorption cover covering main adsorbent cage, adsorption cover body and be connected between the intrinsic porous inner cylinder of adsorption cover and define the accommodating cavity holding additional adsorbent, gland bonnet is fastened on adsorption cover body.In the process of transport, by the gap that adsorption cover is connected with main adsorbent box, or the gap be connected with base by adsorption cover enters into the part pollutant of passive sample devices inside can by additional adsorbent adsorption cleaning, thus reduce the contaminated degree of passive type air sampler to a great extent, ensure the accuracy that passive type air sampler is sampled as much as possible.
Description
Technical field
The present invention relates to air detection technical field, more particularly, relate to a kind of passive type air sampler.
Background technology
Air sampler is divided into active sampling thief and passive sample devices.Active sampling thief is by asepwirator pump, air-flow measurement device and time set, the air sample of certain volume is made at the uniform velocity to flow through adsorbent in sampling thief, gas pollutant is concentrated to be adsorbed in adsorbent, then be used in conjunction with instruments such as gas chromatographs, detect the gaseous contamination substrate concentration in detected surrounding air.
Passive type air sampler does not have asepwirator pump and air mass flow counter device, is within the sampling time of setting, is exposed in atmosphere by the adsorbent in passive type air sampler, the pollutant of a part of gas in air is adsorbed in adsorbent.When the sampling time is fixed, the adsorbance of adsorbent is directly proportional to gaseous contamination substrate concentration in air; When gaseous contamination substrate concentration is certain in atmosphere, adsorbance was directly proportional to the sampling time.The sampling time is recorded during use, be used in conjunction with instruments such as gas chromatographs and can measure adsorbance, again by with under the various sampling time, various normal concentration down-sampling detects the mass data obtained and compares, and just can detect the gaseous contamination substrate concentration in detected surrounding air.Passive type air sampler is widely used because of advantages such as volume are little, quality is light, simple and quick.
Passive type air sampler normally gives client by modes such as mailing, and sends laboratory back to by same mode and analyze.In transmittance process, the environmental pollution states in the packaging of passive type air sampler or residing means of transport has just become uncontrollable factor.Once contaminated in transmittance process, will there is not amendable deviation in the sampled result of passive type air sampler.And the sealing means of existing passive type air sampler, no matter be aluminium foil bag sealing, plastics or glass sleeve seal, can sealing, be not absolutely gas-tight, some pollutant still can be infiltrated by gap, causes passive sample devices to pollute.
Therefore, how to design a kind of passive type air sampler, this passive type air sampler can reduce the contaminated degree of passive type air sampler as much as possible, thus ensures the accuracy of passive type air sampler sampling as far as possible, is those skilled in the art's critical problems urgently to be resolved hurrily.
Summary of the invention
The object of this invention is to provide a kind of passive type air sampler, this passive type air sampler can reduce the contaminated degree of passive type air sampler as much as possible, thus ensures the accuracy of passive type air sampler sampling as much as possible.
For achieving the above object, the invention provides following technical scheme:
A kind of passive type air sampler, comprise main adsorbent box, be positioned at the main adsorbent of described main adsorbent box, at the openend of described main adsorbent box, from near described main adsorbent to be disposed with away from described main adsorbent the first separation net, control apart from frame, keep out the wind layer and porous guard shield, also comprise:
Cover on described main adsorbent box, and the adsorption cover removably connected with described main adsorbent box, described adsorption cover comprises:
Adsorption cover body;
Be connected in described adsorption cover body, and the internal wall separates of described adsorption cover body is become the via layer of upper inside wall and lower inner wall, described via layer offers some through holes, and described via layer, described porous guard shield and described lower inner wall define purification chamber;
Be fastened on the gland bonnet on described adsorption cover, described gland bonnet, described via layer and described upper inside wall define accommodating cavity;
Be contained in the additional adsorbent in described accommodating cavity.
Preferably, described via layer is integrated with described adsorption cover body is formed.
Preferably, described via layer is equipped with the second separation net on the end face of described gland bonnet.
Preferably, described adsorption cover screws on described main adsorbent box.
Present invention also offers another kind of passive type air sampler, comprise
Base;
Be inserted into the main adsorbent cage in the blind hole of described base;
Be contained in the main adsorbent in described main adsorbent cage;
Cover the porous guard shield of described main adsorbent cage, the inwall of described porous guard shield be connected with the layer that keeps out the wind,
Also comprise:
Cover the adsorption cover of described porous guard shield, described adsorption cover comprises:
Adsorption cover body,
Be connected to the intrinsic porous inner cylinder of described adsorption cover, accommodating cavity is defined between described adsorption cover body and described porous inner cylinder, define between described porous inner cylinder and described porous guard shield and purify chamber, described porous inner cylinder offers some through holes, and described adsorption cover body is removably connected on described base;
Be contained in the additional adsorbent in described accommodating cavity;
Be fastened on the gland bonnet on described adsorption cover body.
Preferably, described porous inner cylinder is connected to the end near base on described adsorption cover body.
Preferably, described porous inner cylinder is integrated with described adsorption cover body is formed.
Preferably, described adsorption cover screws on described base.
Preferably, described porous inner cylinder is connected with separation net on the surface of described additional adsorbent.
As can be seen from technique scheme, the present invention is provided with additional adsorbent, in the process of transport, by the gap that adsorption cover is connected with main adsorbent box, or the gap be connected with base by adsorption cover enters into the part pollutant of passive type air sampler inside can by additional adsorbent adsorption cleaning, thus reduce the contaminated degree of passive type air sampler to a great extent, ensure the accuracy that passive type air sampler is sampled as much as possible.
Accompanying drawing explanation
In order to be illustrated more clearly in the scheme in the embodiment of the present invention, be briefly described to the accompanying drawing of embodiment or required use below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The wiring layout of the passive type air sampler that Fig. 1 provides for the specific embodiment of the invention;
The overall appearance schematic diagram of passive type air sampler of Fig. 2 for providing in Fig. 1;
The wiring layout of the passive type air sampler that Fig. 3 provides for another specific embodiment of the present invention;
The overall appearance schematic diagram of passive type air sampler of Fig. 4 for providing in Fig. 3.
Wherein, 10 be gland bonnet, 11 be main adsorbent box, 12 to be main adsorbent, 13 be the first separation net, 14 be the layer that keeps out the wind apart from frame, 15,16 be porous guard shield, 17 be adsorption cover body, 171 be via layer, 172 be additional adsorbent for through hole, 18 is the second separation net, 19,20 be gland bonnet, 21 be base, 22 to be main adsorbent, 23 be main adsorbent cage, 24 be porous inner cylinder, 261 be through hole, 27 be separation net, 28 be adsorption cover body, 29 be additional adsorbent, 100 be purification chamber, 200 be purification chamber for porous guard shield, 25 layer, 26 that keeps out the wind for control.
Embodiment
The invention discloses a kind passive type air sampler, this passive type air sampler can reduce the contaminated degree of passive type air sampler as much as possible, thus ensures the accuracy of passive type air sampler sampling as much as possible.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on embodiments of the invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of protection of the invention.
Please refer to Fig. 1-Fig. 4.The wiring layout of the passive sample devices that Fig. 1 provides for the specific embodiment of the invention; The one-piece construction schematic diagram of the passive sample devices that Fig. 2 provides for the specific embodiment of the invention; The wiring layout of the passive sample devices that Fig. 3 provides for the specific embodiment of the invention; The one-piece construction schematic diagram of the passive sample devices that Fig. 4 provides for the specific embodiment of the invention.
In the present invention one specific embodiment, passive type air sampler comprises main adsorbent box 11, main adsorbent 12, first separation net 13, control apart from frame 14, the layer 15 that keeps out the wind, porous guard shield 16, also comprise adsorption cover, this adsorption cover comprises adsorption cover body 17, via layer 171, gland bonnet 10 and additional adsorbent 19.
Wherein, main adsorbent 12 is positioned at main adsorbent box 11, at the openend of main adsorbent 12, from near main adsorbent 12 to be disposed with away from main adsorbent 12 first separation net 13, control apart from frame 14, keep out the wind layer 15, and porous guard shield 16, the effect of porous guard shield 16 is pressed on the port of main adsorbent box 11 apart from frame 14 and the layer 15 that keeps out the wind the first separation net 13, control.The distance that the effect controlling distance frame 14 is control first separation net 13 and keeps out the wind between layer 15, the first separation net 13 and the air layer defining between layer 15 and hold air that keeps out the wind.
The internal wall separates of adsorption cover body 17 is upper and lower two parts by the via layer 171 be connected in adsorption cover body 17, is respectively upper inside wall and lower inner wall.Via layer 171 offers some through holes 172, via layer 171, porous guard shield 16 and lower inner wall define purification chamber 100.Gland bonnet 10 is fastened on adsorption cover body 17, and gland bonnet 10, via layer 171 and upper inside wall define accommodating cavity, and additional adsorbent 19 is positioned at this accommodating cavity.
During assembling, first in the via layer 171 of adsorption cover, fill additional adsorbent 19, and it is for subsequent use to build gland bonnet 10.Then, in main adsorbent box 11, put into appropriate main adsorbent 12, then put in order the first separation net 13, control apart from frame 14, keep out the wind layer 15, and above-mentioned material is pressed on main adsorbent box 11 by porous guard shield 16.Finally adsorption cover is covered on main adsorbent box 11.
Additional adsorbent 19 is provided with in this embodiment, in the process of transport, the gap be connected with main adsorbent box 11 by adsorption cover is entered into passive sample devices and purifies part pollutant in chamber 100, after through hole 172, by additional adsorbent 19 adsorption cleaning, thus reduce the contaminated degree of passive sample devices to a great extent, ensure the accuracy that passive sample devices is sampled as much as possible.
Preferably, the via layer 171 in above-mentioned is integrated with adsorption cover body 17 to be formed.This enhance the stability of structure, improve the usability of passive sample devices.
In the present invention one specific embodiment, also comprise the second separation net 18, this second separation net 18 is layed in via layer 171 on the end face of gland bonnet 10, and the object of laying the second separation net 18 is to prevent the additional adsorbent 19 in via layer 171 from leaking in purification chamber 100.
In the present invention one specific embodiment, the adsorption cover in above-mentioned screws on main adsorbent box 11, and adsorption cover is provided with internal thread, main adsorbent box 11 is provided with the external thread with internal thread adaptation.Screw connection structure is simple, connection is reliable, mounting or dismounting are convenient.
When sampling to air, screwed off by adsorption cover from main adsorbent box 11, pollutant, after the infiltration layer by layer of porous guard shield 16, the layer 15 that keeps out the wind, air layer, the first separation net 13, is finally adsorbed in main adsorbent 12.After sampling terminates, adsorption cover is tightened on main adsorbent box 11 immediately, and records the sampling time.
In another specific embodiment of the present invention, passive type air sampler comprises base 21, main adsorbent cage 23, main adsorbent 22, porous guard shield 24, also comprise adsorption cover, this adsorption cover comprises adsorption cover body 28, porous inner cylinder 26, gland bonnet 20 and additional adsorbent 29.
Wherein, main adsorbent 22 is arranged in main adsorbent cage 23, and main adsorbent cage 23 is inserted in the blind hole on base 21, is covered with porous guard shield 24 outside main adsorbent cage 23, the inwall of this porous guard shield 24 is connected with the layer 25 that keeps out the wind, and this porous guard shield 24 is connected on base 21.
Being connected to the accommodating cavity defined between porous inner cylinder 26 in adsorption cover body 28 and adsorption cover body 28 for holding additional adsorbent 29, defining between porous inner cylinder 26 and porous guard shield 24 and purifying chamber 200.Adsorption cover body 28 is removably connected on base 21, porous inner cylinder 26 is provided with some through holes 261, and gland bonnet 20 is fastened on adsorption cover body 28, for sealing the additional adsorbent 29 in accommodating cavity.
During assembling, first adsorption cover body 28 and porous inner cylinder 26 are connected as one, then in the upper direction accommodating cavity of adsorption cover body 28, fill additional adsorbent 29, and it is for subsequent use to build gland bonnet 20.Then, by the blind hole filled in main adsorbent cage 23 inserted base 21 of main adsorbent 22, and the porous guard shield 24 installing the layer 25 that keeps out the wind is connected on base 21, main adsorbent cage 23 is covered.Finally adsorption cover is located on base 21.
Additional adsorbent 29 is provided with in this embodiment, in the process of transport, the gap be connected with base 21 by adsorption cover enters into the part pollutant in the purification chamber 200 of passive type air sampler, after through hole 261, by additional adsorbent 29 adsorption cleaning, thus reduce the contaminated degree of passive type air sampler to a great extent, ensure the accuracy that passive type air sampler is sampled as much as possible.
Preferably, porous inner cylinder 26 is connected to the end near base 21 on adsorption cover body 28.The volume of accommodating cavity can be increased so as much as possible, more additional adsorbent 29 is contained in accommodating cavity.
Preferably, the porous inner cylinder 26 in above-mentioned is integrated with adsorption cover body 28 to be formed.This enhance the stability of structure, improve the usability of passive type air sampler.
In the present invention one specific embodiment, adsorption cover screws on base 21, and adsorption cover body 28 is provided with external thread, base 21 is provided with the internal thread with this external thread adaptation.Screw connection structure is simple, connection is reliable, mounting or dismounting are convenient.
In the present invention one specific embodiment, porous inner cylinder 26 is connected with separation net 27 on the surface of additional adsorbent 29.The object of separation net 27 is to prevent the additional adsorbent 29 in accommodating cavity from leaking in purification chamber 200.
When sampling to air, screwed off by adsorption cover from main adsorbent box 21, pollutant, after the infiltration layer by layer of porous guard shield 24, the layer 25 that keeps out the wind, air layer and main adsorbent cage 23, is adsorbed on main adsorbent 22.After sampling terminates, adsorption cover is tightened on main adsorbent box 21 immediately, and records the sampling time.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a passive type air sampler, comprise main adsorbent box (11), be positioned at the main adsorbent (12) of described main adsorbent box (11), at the openend of described main adsorbent box (11), from close described main adsorbent (12) to being disposed with the first separation net (13), control away from described main adsorbent (12) apart from frame (14), the layer that keeps out the wind (15) and porous guard shield (16), it is characterized in that, also comprise:
Cover on described main adsorbent box (11), and the adsorption cover removably connected with described main adsorbent box (11), described adsorption cover comprises:
Adsorption cover body (17);
Be connected in described adsorption cover body (17), and the internal wall separates of described adsorption cover body (17) is become the via layer (171) of upper inside wall and lower inner wall, described via layer (171) offers some through holes (172), described via layer (171), described porous guard shield (16) and described lower inner wall define purification chamber (100);
Be fastened on the gland bonnet (10) on described adsorption cover body (17), described gland bonnet (10), described via layer (171) and described upper inside wall define accommodating cavity;
Be contained in the additional adsorbent (19) in described accommodating cavity.
2. passive type air sampler according to claim 1, is characterized in that, described via layer (171) is integrated with described adsorption cover body (17) to be formed.
3. passive type air sampler according to claim 1, is characterized in that, described via layer (171) is equipped with the second separation net (18) on the end face of described gland bonnet (10).
4. passive type air sampler according to claim 1, is characterized in that, described adsorption cover screws on described main adsorbent box (11).
5. a passive type air sampler, comprises
Base (21);
Be inserted into the main adsorbent cage (23) in the blind hole of described base (21);
Be contained in the main adsorbent (22) in described main adsorbent cage (23);
Cover the porous guard shield (24) of described main adsorbent cage (23), the inwall of described porous guard shield (24) be connected with the layer that keeps out the wind (25),
It is characterized in that, also comprise:
Cover the adsorption cover of described porous guard shield (24), described adsorption cover comprises:
Adsorption cover body (28);
Be connected to the porous inner cylinder (26) in described adsorption cover body (28), accommodating cavity is defined between described adsorption cover body (28) and described porous inner cylinder (26), define between described porous inner cylinder (26) and described porous guard shield (24) and purify chamber (200), described porous inner cylinder (26) offers some through holes (261), described adsorption cover body (28) is removably connected on described base (21);
Be contained in the additional adsorbent (29) in described accommodating cavity;
Be fastened on the gland bonnet (20) on described adsorption cover body (28).
6. passive type air sampler according to claim 5, is characterized in that, described porous inner cylinder (26) is connected to the upper end near base (21) of described adsorption cover body (28).
7. passive type air sampler according to claim 5, is characterized in that, described porous inner cylinder (26) is integrated with described adsorption cover body (28) to be formed.
8. passive type air sampler according to claim 5, is characterized in that, described adsorption cover screws on described base (21).
9. passive type air sampler according to claim 5, is characterized in that, described porous inner cylinder (26) is connected with separation net (27) on the surface of described additional adsorbent (29).
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| CN201310356702.9A CN103398878B (en) | 2013-08-15 | 2013-08-15 | A kind of passive type air sampler |
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| CN201310356702.9A CN103398878B (en) | 2013-08-15 | 2013-08-15 | A kind of passive type air sampler |
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| CN103398878B true CN103398878B (en) | 2015-08-19 |
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| FR3036488B1 (en) * | 2015-05-22 | 2017-10-06 | Ste Action Europe Sarl | DEVICE FOR SAMPLING AND ANALYSIS |
| CN105115791B (en) * | 2015-09-16 | 2018-03-06 | 深圳市建筑科学研究院股份有限公司 | A kind of passive type pollutes flux sampler |
| CN106353426A (en) * | 2016-08-31 | 2017-01-25 | 科邦检测集团有限公司 | Badge type passive air sampler based on MCM-41 molecular sieve |
| CN106769235B (en) * | 2016-11-23 | 2019-07-30 | 厦门大学 | A kind of environmental contaminants time series concentration passive type sampling apparatus |
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| IT1247306B (en) * | 1991-05-06 | 1994-12-12 | Philips Automation S P A | Sampling head of self-aspirating air |
| US7636154B1 (en) * | 2006-12-21 | 2009-12-22 | Itt Manufacturing Enterprises, Inc. | Modular optical detection system for point airborne and area surface substance detection |
| US20110004418A1 (en) * | 2007-06-05 | 2011-01-06 | Chillrud Steven N | Systems and Devices for Collecting Time and Space Resolved Air Samples |
| CN101126686B (en) * | 2007-09-29 | 2011-03-16 | 山东省职业卫生与职业病防治研究院 | Tube type pump-free type samplers |
| US7690276B1 (en) * | 2007-11-28 | 2010-04-06 | The United States Of America As Represented By The Secretary Of The Army | High-efficiency air intake for aerosol air samplers |
| US8196479B2 (en) * | 2009-10-20 | 2012-06-12 | Midwest Research Institute, Inc. | Portable multi-tube air sampler unit |
| WO2011133822A1 (en) * | 2010-04-21 | 2011-10-27 | Flow Systems, Inc. | Differential pressure constant volume flow air sampler |
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| CN102353561B (en) * | 2011-06-22 | 2014-08-13 | 深圳市建筑科学研究院有限公司 | Semi-passive air sampler |
| CN202494588U (en) * | 2012-03-26 | 2012-10-17 | 中国环境科学研究院 | Passive air sampler |
| CN202676514U (en) * | 2012-04-10 | 2013-01-16 | 清华大学 | Passive type filling type adsorption sampling device for air volatile contaminant concentration detection |
| CN102788718B (en) * | 2012-09-04 | 2014-05-14 | 南京大学 | Passive sampler for polycyclic aromatic hydrocarbon in indoor air and sampling testing method thereof |
| CN102944449A (en) * | 2012-11-21 | 2013-02-27 | 环境保护部南京环境科学研究所 | Passive sampling device of multi-component atmospheric organic pollutants |
| CN103033398B (en) * | 2012-12-19 | 2015-02-11 | 深圳市建筑科学研究院股份有限公司 | Timed passive air sampler |
| CN203443812U (en) * | 2013-08-15 | 2014-02-19 | 深圳市建筑科学研究院有限公司 | Passive air sampler |
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