CN203941038U - Sampling core for air sampler - Google Patents
Sampling core for air sampler Download PDFInfo
- Publication number
- CN203941038U CN203941038U CN201420214750.4U CN201420214750U CN203941038U CN 203941038 U CN203941038 U CN 203941038U CN 201420214750 U CN201420214750 U CN 201420214750U CN 203941038 U CN203941038 U CN 203941038U
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- porous pillar
- sampling
- pillar
- adsorbent
- air sampler
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- 238000005070 sampling Methods 0.000 title claims abstract description 77
- 239000003463 adsorbent Substances 0.000 claims abstract description 42
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 18
- 239000010935 stainless steel Substances 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 2
- 238000003795 desorption Methods 0.000 abstract description 16
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000011109 contamination Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 230000032683 aging Effects 0.000 description 5
- 239000002250 absorbent Substances 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
A sampling core for air sampler, it belongs to the servicing unit in air detection field, it is characterized in that it comprises a porous pillar, in the lower end of porous pillar, inside flange is set, and is provided with stainless steel webmaster in the internal side wall of porous pillar; In the upper end of porous pillar, be provided with netted upper plug head, in the lower end of porous pillar, be provided with netted lower end cap; In the described porous pillar with stainless steel webmaster, be provided with adsorbent.Described porous pillar is stainless-steel pipe, on the tube wall of described porous pillar, is evenly distributed with bleeder vent; In the lower end of porous pillar, be provided with inside flange, the width of flange is about 0.3～0.5mm.The utility model is simple in structure, can realize in the thermal desorption pipe that directly adsorbent with porous pillar is directly inserted to air sampler and detecting, easy to operate, and dependable performance can guarantee to detect the accuracy of data; And the utility model can Reusability, and long service life, effectively reduces use cost.
Description
Technical field;
The utility model relates to sampling core for a kind of air sampler, and it belongs to the servicing unit in air detection field, and the accessory in the air sampling rig using when the airborne gaseous contamination substrate concentration of testing environment.
Background technology:
Conventional air sampling rig has two kinds, active air sampling thief and passive type air sampler at present.
Described active air sampling thief is by asepwirator pump, air-flow measurement device and time set, make the air sample of certain volume at the uniform velocity flow through the adsorbent in sampling thief, gas pollutant is concentrated and be adsorbed in adsorbent, and reach concentrated object of sampling.Be used in conjunction the gaseous contamination substrate concentration that just can detect in detected surrounding air with the instrument such as gas chromatograph.
Described passive type air sampler is a kind of method of sampling based on gaseous state or steam-like pollutant in gas molecule diffusion or penetration theory collection air, it does not have asepwirator pump and air mass flow metering device, by its adsorbent is exposed to certain hour in air, it is the sampling time, (time that sampling starts to finish to experience to sampling is the sampling time), is adsorbed in its inner adsorbent a part of gas pollutant in air.In the sampling time, fixedly time, the adsorbance of adsorbent is directly proportional to gaseous contamination substrate concentration in air; When in air, gaseous contamination substrate concentration is certain, adsorbance was directly proportional to the sampling time.During use, record the sampling time, be used in conjunction and can measure adsorbance with instruments such as gas chromatographs, again by with the various sampling times under, various normal concentration down-sampling detects the mass data (arrange and obtain relation curve in advance) obtain and compares, and just can detect the gaseous contamination substrate concentration being detected in surrounding air.
Sampling core is the core parts of passive type air sampler, is divided into cylindrical adsorbent sampling core and filled type sampling core two classes.Current cylindrical adsorbent sampling core is generally pressed into by absorbent particles the direct conduct sampling of the bar-shaped adsorbent core that diameter is not more than 5mm; Filled type sampling core is generally comprised of porous shell and granular adsorbent, is about to granular adsorbent and is filled in porous shell inside and makes.(some passive type sampling thief core of not sampling, its adsorbent is directly filled in sampling thief housing, after each sampling, needs adsorbent to take out and be filled in thermal desorption pipe to detect.)
The relatively active sampling thief of passive type sampling thief, its feature is not need the power of bleeding, do not need flow measurement device yet, volume is little, and quality is light, simple to operate, can be used for the detection that individual Exposure is evaluated, also can be placed on appointed place, continuous sampling, for evaluating certain section of time environmental quality average level.The passive type method of sampling, simple and convenient, be not subject to regional limits, without professional's operation, can greatly reduce workload and the cost of sampling.
With sampling core passive type sampling thief relatively not with sampling core passive type sampling thief, there is easy and simple to handle, high conformity, the advantage such as can repeated multiple timesly use, therefore, as the core parts of passive type air sampler, sampling precision, cost of manufacture and the serviceable life of sampling core are played conclusive effect to the cost performance of whole sampling thief.
Application number is that the patent document of 201220149200.X discloses a kind of air volatile contaminant concentration detection passive filling adsorption sampling device (being a kind of passive type filled-type air sampler).This device comprises granular pattern adsorbent, porous shell, base, outer cover and rubber seal.Wherein: granular pattern adsorbent is filled in porous shell, shell is positioned on base, and outer cover covers shell and by O-ring seal and base seal.During sampling, removing outer cover sampling starts.After sampling time arrives, cover immediately upper outer cover, take back (returning) laboratory, the porous shell that adsorbent is housed is taken out, again granular pattern adsorbent is taken out in porous shell, put into thermal desorption pipe, then thermal desorption pipe is put in the gas chromatograph with thermal desorption function, measure the gaseous contamination substrate concentration that is sampled environment.
Application number is that 201010165561.9 patent document discloses the passive adsorbing and sampling device (being the non-filled-type air sampler of a kind of passive type) that a kind of concentration of volatile contaminant in indoor air detects, this device comprises cylindrical adsorbent, base, outer cover and rubber washer; Wherein, cylindrical adsorbent is placed on base, and external cover is outside cylindrical adsorbent and by packing ring and base seal.During sampling, removing outer cover sampling starts.After sampling time arrives, the upper outer cover of cover, takes back (returning) laboratory immediately, cylindrical adsorbent is taken out, directly put into thermal desorption pipe, then thermal desorption pipe is put in the gas chromatograph with thermal desorption function, measure the gaseous contamination substrate concentration that is sampled environment.
Above-mentioned application number is that the disclosed adsorbing and sampling device of the patent document of 201220149200.X exists following shortcoming: first, porous shell adopts macromolecular material to make, non-refractory.So the porous shell that adsorbent is housed directly can not be put into thermal desorption pipe, so operation steps is identical with the sampling thief of the core of not sampling, does not have to be simplified because of the operation steps that makes of sampling core; Secondly, while measuring, all need to carry out granular pattern adsorbent to take out in porous shell at every turn, put into the operation of thermal desorption pipe, have unavoidably the unrestrained error of adsorbent, affect accuracy of detection.
Above-mentioned application number is that 201010165561.9 the disclosed adsorbing and sampling device of patent document exists following shortcoming: first, cylindrical adsorbent sampling core is generally usingd absorbent particles and is made bar-shaped adsorbent that diameter is not more than 5mm directly as sampling core as raw material, but current the most frequently used high-efficient granule shape adsorbent can not be made into bar-shaped.Secondly, adopting absorbent particles is that the physical strength of the bar-shaped sampling core made of raw material is on the low side, and easily damaged, serviceable life is limited.
Summary of the invention:
The utility model provides the design proposal of a kind of easy and simple to handle, high precision, low cost, long-life sampling core.
The purpose of this utility model is achieved in that
A sampling core for air sampler, is characterized in that it comprises a porous pillar, in the lower end of described porous pillar, inside flange is set, and is provided with stainless steel webmaster in the internal side wall of porous pillar; Upper end at described porous pillar is provided with netted upper plug head, in the lower end of described porous pillar, is provided with netted lower end cap; In the described porous pillar with stainless steel webmaster, be provided with adsorbent.
Described porous pillar is stainless-steel pipe, on the tube wall of described porous pillar, is evenly distributed with bleeder vent; Lower end at described porous pillar is provided with inside flange, and the width of flange is about 0.3～0.5mm.
The aperture of described bleeder vent is 1～2mm.
In the upper end of described porous pillar, be provided with 1～2 fabrication hole; The external diameter of described porous pillar is less than 5mm.
Described stainless steel webmaster is the tubular structure that rectangle stainless (steel) wire sheet is reeled.
Described netted lower end cap is the mould punching part of the stainless (steel) wire sheet that structure is identical with netted upper plug head.
The utility model is simple in structure, can realize in the thermal desorption pipe that directly adsorbent with porous pillar is directly inserted to air sampler and detecting, easy to operate, and dependable performance can guarantee to detect the accuracy of data; And the utility model can Reusability, and long service life, effectively reduces use cost.
Accompanying drawing explanation:
Fig. 1 is the structural representation of invention
Embodiment:
Below in conjunction with Fig. 1, the utility model is further detailed:
As shown in fig. 1, the utility model comprises porous pillar 1, stainless steel webmaster 2, netted lower end cap 3, adsorbent 4 and netted upper plug head 5.
Its concrete structure is as follows: the lower end at described porous pillar 1 arranges inside flange 11, is provided with stainless steel webmaster 2 in the internal side wall of porous pillar 1; In the upper end of described porous pillar 1, be provided with netted upper plug head 5, in the lower end of described porous pillar 1, be provided with netted lower end cap 3; In the described porous pillar 1 with stainless steel webmaster 2, be provided with adsorbent 4.
Porous pillar 1 adopts stainless-steel thin-wall pipe to make, and need have enough rigidity, can guarantee that whole sampling core does not deform.
The external diameter of porous pillar 1 is slightly less than the internal diameter of the thermal desorption pipe of air sampler, and the internal diameter of thermal desorption pipe is 5mm conventionally, is convenient to like this utility model to be placed in thermal desorption pipe.The inside flange 11 that the lower end of described porous pillar 1 arranges is for coordinating with netted lower end cap 3, and the width of its flange is about 0.3～0.5mm.
Described porous pillar 1 is provided with a large amount of equally distributed bleeder vents 12, and aperture is 1～2mm; The upper end of porous pillar 1 is provided with 1～2 fabrication hole 13, and the purposes of described fabrication hole 13 is after detection finishes, and utilizes crochet hook to hook described fabrication hole 13, can easily sampling core be taken out in thermal desorption pipe.
Described stainless steel webmaster 2 adopts rectangle net sheet to reel and forms; The mesh of stainless (steel) wire should be enough little, can guarantee that granular adsorbent 4 can not spilt by mesh.
Netted lower end cap 3 and netted upper plug head 5 adopt stainless (steel) wire to make, and adopt diel by the impact briquetting of stainless (steel) wire sheet, and the material of netted lower end cap 3 and netted upper plug head 5 is identical with shape.
Adsorbent 4 adopts commercially available all kinds of applicable adsorbents, and the best adsorbent of effect is TENAX at present.
Assembly process of the present utility model is as follows:
1) porous pillar 1 is stood on desktop, by rod iron, netted lower end cap 3 is filled on earth from top to bottom, fill in to porous pillar to in-flanges 11 places;
2) in porous pillar, fill in stainless steel webmaster 2;
3) in porous pillar, insert prior load weighted adsorbent 4;
4) fill in upper plug head 5.
It is standby that the utility model assembling should be placed in airtight container.When needs are delivered, the utility model is sampled to put into heat ageing instrument aging for core, then the utility model after aging is packed in passive type air sampler, and hurry the delivery as much as possible.
Using method of the present utility model:
The utility model should pack in suitable sealed package before dispatching from the factory.
During use, open sealed package, instructions according to various sampling thiefs operates, in the environment that the utility model is exposed to be sampled, airborne harmful gas passes bleeder vent 12 and stainless steel webmaster 2 by the mode of diffusion, enter the gap between absorbent particles, be finally adsorbed agent absorption.
Sampling thief by specification after sampling is required to sealing, put into packing container, send or deliver laboratory.When being ready to it to detect, take out the sampling core in sampling thief, directly fill in thermal desorption pipe and detect, measure the adsorbance of adsorbent to objectionable impurities in sampling core.
The sampling core of having loaded is reusable, completes the sampling core of detection after heat ageing instrument is aging, can again pack air sampler into and be delivered for use.After prolonged and repeated use, the adsorbent in sampling core may lose efficacy, and now adsorbent can be taken out, and inserted after new adsorbent, again came into operation.
Claims (6)
1. sampling core for an air sampler, it is characterized in that it comprises a porous pillar (1), lower end at described porous pillar (1) arranges inside flange (11), is provided with stainless steel webmaster (2) in the internal side wall of porous pillar (1); Upper end at described porous pillar (1) is provided with netted upper plug head (5), in the lower end of described porous pillar (1), is provided with netted lower end cap (3); In the described porous pillar (1) with stainless steel webmaster (2), be provided with adsorbent (4).
2. sampling core for air sampler as described in claim 1, is characterized in that described porous pillar (1) is stainless-steel pipe, is evenly distributed with bleeder vent (12) on the tube wall of described porous pillar (1); Lower end at described porous pillar (1) is provided with inside flange (11), and the width of flange is about 0.3～0.5mm.
3. sampling core for air sampler as described in claim 2, is characterized in that the aperture of described bleeder vent (12) is 1～2mm.
As described in claim 1 air sampler with sampling core, it is characterized in that being provided with 1～2 fabrication hole (13) in the upper end of described porous pillar (1); The external diameter of described porous pillar (1) is less than 5mm.
5. sampling core for air sampler as described in claim 1, is characterized in that the tubular structure that described stainless steel webmaster (2) is reeled for rectangle stainless (steel) wire sheet.
6. sampling core for air sampler as described in claim 1, is characterized in that described netted lower end cap (3) and netted upper plug head (5) are the mould punching part of the stainless (steel) wire sheet that structure is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420214750.4U CN203941038U (en) | 2014-04-29 | 2014-04-29 | Sampling core for air sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420214750.4U CN203941038U (en) | 2014-04-29 | 2014-04-29 | Sampling core for air sampler |
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| Publication Number | Publication Date |
|---|---|
| CN203941038U true CN203941038U (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420214750.4U Expired - Lifetime CN203941038U (en) | 2014-04-29 | 2014-04-29 | Sampling core for air sampler |
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| Country | Link |
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| CN (1) | CN203941038U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926116A (en) * | 2014-04-29 | 2014-07-16 | 深圳市建筑科学研究院股份有限公司 | Sampling core for air sampler |
| CN107201898A (en) * | 2016-03-18 | 2017-09-26 | 中国石油化工股份有限公司 | A kind of adsorption structure and its manufacture method for stratum |
-
2014
- 2014-04-29 CN CN201420214750.4U patent/CN203941038U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926116A (en) * | 2014-04-29 | 2014-07-16 | 深圳市建筑科学研究院股份有限公司 | Sampling core for air sampler |
| CN103926116B (en) * | 2014-04-29 | 2017-01-11 | 深圳市建筑科学研究院股份有限公司 | Sampling core for air sampler |
| CN107201898A (en) * | 2016-03-18 | 2017-09-26 | 中国石油化工股份有限公司 | A kind of adsorption structure and its manufacture method for stratum |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |