CN104181012A - Air sampler - Google Patents
Air sampler Download PDFInfo
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- CN104181012A CN104181012A CN201410422535.8A CN201410422535A CN104181012A CN 104181012 A CN104181012 A CN 104181012A CN 201410422535 A CN201410422535 A CN 201410422535A CN 104181012 A CN104181012 A CN 104181012A
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Abstract
The invention discloses an air sampler which comprises an adsorbent column core, a windshield layer and a base, wherein the adsorbent column core and the windshield layer are respectively and fixedly connected with the base; the adsorbent column core is arranged at the inner side of the windshield layer; the air sampler also comprises a sealing device provided with a first containing cavity and a second containing cavity; the sealing device is arranged on the base in a detachable way; the top end of the first containing cavity and the top end of the second containing cavity are respectively in a closed type; an opening end of the first containing cavity and an opening end of the second containing cavity are respectively arranged at the bottom end of the sealing device and are closed by the base; the second containing cavity is arranged at the outer side of the first containing cavity in a surrounding way; the adsorbent column core is arranged in the first containing cavity; the windshield layer is arranged in the second containing cavity. Therefore, the adsorbent column core is separated from the windshield layer after sampling, the effect of sealing the adsorbent column core can be achieved, the phenomenon that the adsorbent column core is polluted by the windshield layer after sampling can be avoided, and the accuracy of detection results can be improved.
Description
Technical field
The present invention relates to air detection equipment technical field, particularly relate to a kind of air sampler.
Background technology
Air sampler is a kind of supplementary instrument, can the tested gas pollutant in detected surrounding air be gathered or be extracted, and is used in conjunction and just can detects the gaseous contamination substrate concentration being detected in surrounding air with the instrument such as gas chromatograph.
Existing a kind of air sampler comprises adsorbent post core, layer, base and outer cover keep out the wind, wherein adsorbent post core is arranged at center position and is connected with base, the layer that keeps out the wind is arranged at the outside of adsorbent post core, outer cover is arranged at the outside of layer of keeping out the wind, and the layer that keeps out the wind is all connected with base with outer cover.
When sampling, outer cover need to be extractd, the gas in test environment can contact with adsorbent post core via the layer that keeps out the wind, and when sampling finishes, outer cover need to be installed on to base.
But because the layer that keeps out the wind is for porous material layer, after sampling finishes, the gas molecule that is adsorbed in the layer that keeps out the wind can pollute adsorbent post core, and causes testing result inaccurate.Meanwhile, owing to need to carrying out the installation of adsorbent post core before sampling in prior art, in installation process, can cause adsorbent post core contaminated because contacting external environment condition.
Therefore, how avoiding adsorbent post core that contaminated phenomenon occurs is those skilled in the art's technical issues that need to address.
Summary of the invention
In view of this, the application's object is to provide a kind of air sampler, can avoid sampling to finish the contaminated phenomenon of rear adsorbent post core, improves the accuracy of testing result.
The application provides a kind of air sampler, comprise adsorbent post core, layer and base keep out the wind, described adsorbent post core and described in keep out the wind layer be all fixedly connected with described base, and the inner side of the layer that keeps out the wind described in described adsorbent post core is arranged at, also comprise the packoff with the first container cavity and the second container cavity, described packoff and described base detachably arrange, the top of the top of described the first container cavity and described the second container cavity is closed top, the openend of described the first container cavity and described the second container cavity is all positioned at the bottom of described packoff and all by described base, seals, wherein, described the second container cavity is around the outside that is arranged at described the first container cavity, and described adsorbent post core is placed in described the first container cavity, described in keep out the wind and be placed on described the second container cavity.
Preferably, described packoff comprises inner core and urceolus, described urceolus is sheathed on the outside of described inner core, and the top of described inner core and the top of described urceolus be connected and be closed top, and the bottom of described inner core is all connected with described base with the bottom of described urceolus; Described inner core is provided with described the first container cavity, and described adsorbent post core is placed in described the first container cavity; Between the inside surface of described urceolus and the outside surface of described inner core, form described the second container cavity, described in keep out the wind and be placed on described the second container cavity.
Preferably, the bottom of described urceolus and described base by thread detachably arrange, and the bottom of described inner core and the mounting groove of described base connect.
Preferably, the mounting groove of described base is taper mounting groove, and described taper mounting groove arranges to its bottom land convergent along openend; The bottom of described inner core is arc bottom, and the bottom land of described arc bottom and described taper mounting groove connects.
Preferably, also comprise the porous protective cover that is provided with a plurality of bleeder vents, outside and the described porous protective cover of the layer that keeps out the wind described in described porous protective cover is arranged at are arranged at described the second container cavity.
Preferably, the top of described porous protective cover is provided with the screw thread for matching with the bottom of described urceolus.
Preferably, described adsorbent post core comprises net cylinder and adsorbent, and described adsorbent is filled in described net cylinder.
Preferably, described in, keep out the wind layer for filter paper layer or nuclear pore filter film layer or porous polyethylene rete.
A kind of air sampler that the application provides, comprise adsorbent post core, keep out the wind layer and base, adsorbent post core and the layer that keeps out the wind are all fixedly connected with base, and adsorbent post core is arranged at the inner side of the layer that keeps out the wind, also comprise the packoff with the first container cavity and the second container cavity, packoff and described base detachably arrange, the top of the top of the first container cavity and the second container cavity is closed top, and the openend of the first container cavity and the second container cavity is all positioned at the bottom of packoff and all by base, seals; Wherein, the second container cavity is around the outside that is arranged at the first container cavity, and adsorbent post core is placed in described the first container cavity, keeps out the wind and is placed on the second container cavity.So arrange, because packoff is provided with two independent container cavities, and adsorbent post core is placed in the first container cavity, keep out the wind and be placed on the second container cavity, so keeping out the wind, to pass through the chamber wall of the first container cavity isolated for layer and adsorbent post core, the first container cavity provides the space of sealing for adsorbent post core, and then the layer of can avoiding keeping out the wind pollutes adsorbent post core, compared with prior art, packoff arranges two independent container cavities, and adsorbent post core is placed in the first container cavity, keep out the wind and be placed in the second container cavity, thereby after can guaranteeing to wait to sample, adsorbent post core is isolated with the layer that keeps out the wind, thereby play the sealing effectiveness to adsorbent post core, can avoid finishing in sampling the phenomenon that backstop stratification of wind pollutes adsorbent post core, and then can improve the accuracy of testing result.Meanwhile, owing to need to not carrying out the installation of adsorbent post core before sampling, and then can avoid the phenomenon that adsorbent post core polluted at installation process peripheral environment, and then can further guarantee the accuracy of testing result.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of air sampler in a kind of embodiment that Fig. 1 provides for the application;
The structural representation of air sampler when sample states in a kind of embodiment that Fig. 2 provides for the application;
Structural representation when air sampler is sampled in a kind of embodiment that Fig. 3 provides for the application;
Wherein, in Fig. 1 to Fig. 3:
Packoff 1, inner core 2, arc bottom 2a, urceolus 3, the first container cavity 4, the second container cavity 5, base 6, adsorbent post core 7, layer 8, taper mounting groove 9, porous protective cover 10, bleeder vent 11 keep out the wind.
Embodiment
The invention discloses a kind of air sampler, can avoid sampling to finish the contaminated phenomenon of rear adsorbent post core, improve the accuracy of testing result.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1 to Fig. 3, the structural representation of air sampler in a kind of embodiment that Fig. 1 provides for the application, the structural representation of air sampler when sample states in a kind of embodiment that Fig. 2 provides for the application, structural representation when air sampler is sampled in a kind of embodiment that Fig. 3 provides for the application.
In this embodiment, air sampler comprises adsorbent post core 7, layer 8 and base 6 keep out the wind, wherein keep out the wind layer 8 be arranged at the outside of adsorbent post core 7 and keep out the wind layer 8 and adsorbent post core 7 be all fixedly connected with base 6, also comprise and the detachable packoff 1 arranging of base 6, wherein packoff 1 is provided with the first container cavity 4 and the second container cavity 5, the top of the top of the first container cavity 4 and the second container cavity 5 is closed top, and the openend of the openend of the first container cavity 4 and the second container cavity 5 is all positioned at the bottom of packoff 1.Wherein, the second container cavity 5 is around the outside that is arranged at the first container cavity 1, and adsorbent post core 7 is placed in the first container cavity 4, and the layer 8 that keeps out the wind is placed in the second container cavity 5.
So arrange, when sampling, packoff 1 is removed from base 6, the layer 8 that keeps out the wind will be exposed in detected environment, airborne pollutant can only infiltrate in adsorbent post core 7 via the layer 8 that keeps out the wind, avoid adsorbent post core 7 to be directly exposed in external environment condition, after reaching the needed time of sampling, packoff 1 is installed on to base 6.Because packoff 1 is provided with two independent container cavities, and adsorbent post core 7 is placed in the first container cavity 4, the layer 8 that keeps out the wind is placed in the second container cavity 5, and the openend of the openend of the first container cavity 4 and the second container cavity 5 all seals by base, so keep out the wind layer 8 and adsorbent post core 7 is isolated by the chamber wall of the first container cavity 4, the first container cavity 4 provides the space of sealing for adsorbent post core 7, and then 8 pairs of adsorbent post 7 core of layer of can avoiding keeping out the wind pollute, compared with prior art, packoff 1 arranges two independent container cavities, and adsorbent post core 7 is placed in the first container cavity 4, the layer 8 that keeps out the wind is placed in the second container cavity 5, thereby after can guaranteeing to wait to sample, adsorbent post core 7 is isolated with the layer 8 that keeps out the wind, thereby play the sealing effectiveness to adsorbent post core 7, can avoid finishing in sampling the phenomenon that backstop stratification of wind 8 pollutes adsorbent post core 7, and then can improve the accuracy of testing result.Meanwhile, owing to need to not carrying out the installation of adsorbent post core 7 before sampling, and then can avoid the phenomenon that adsorbent post core 7 polluted at installation process peripheral environment, and then can further guarantee the accuracy of testing result.
It should be noted that, in this embodiment, the openend of the openend of the first container cavity 4 and the second container cavity 5 is all positioned at the bottom of packoff 1, the top of the top of the first container cavity 4 and the second container cavity 5 is closed top, so, when installing, packoff 1 is sheathed on adsorbent post core 7 and the layer 8 that keeps out the wind, and the bottom of packoff 1 and base 6 connect, the openend of the openend of the first container cavity 4 and the second container cavity 5 all seals by base 6, and then can guarantee sampling before and sampling finish after, the first container cavity 4 and the second container cavity 5 are two independent annular seal spaces, and then can guarantee that adsorbent post core 7 is placed in separately in the first container cavity 4 of sealing, thereby can avoid adsorbent post core 7 contaminated phenomenons.
Also it should be noted that, in this embodiment, the openend of the openend of the first container cavity 4 and the second container cavity 5 is arranged to the bottom of packoff 1, can be so that the installation of packoff 1 and guarantee adsorbent post core 7 and the layer 8 that keeps out the wind is placed in respectively in corresponding container cavity, and by the openend of the openend of the first container cavity 4 and the second container cavity 5 being all arranged to the bottom of packoff 1, can guarantee after sampling finishes, base 6 plays the effect of the openend of two container cavities of sealing, and then can guarantee that the first container cavity 4 and the second container cavity 5 become the cavity of sealing after sampling finishes, thereby play adsorbent post core 7 and layer 8 effect sealing separately of keeping out the wind.
In further scheme, for the ease of forming the first container cavity 4 and the second container cavity 5, in this embodiment, packoff comprises inner core 2 and urceolus 3, wherein urceolus 3 is sheathed on the outside of inner core 2, and the top of the top of inner core 2 and urceolus 3 is connected and both tops are closed top.The hollow space of inner core 2 is the first container cavity 4, the hollow space that adsorbent post core 7 is placed in inner core 2 is that adsorbent post core 7 is placed in the first container cavity 4, between the inside surface of the outside surface of inner core 4 and urceolus 5, formed space is the second container cavity 5, and the layer 8 that keeps out the wind in layer 8 space being placed between the outside surface of inner core 2 and the inside surface of urceolus 3 of keeping out the wind is placed in the second container cavity 5.
So arrange, by urceolus 3 being sheathed on to the outside of inner core 2, can guarantee that packoff 1 has two independent container cavities, the openend of inner core 2 is the bottom of inner core 2, and the blind end of inner core 2 is the top of inner core 2; The openend of urceolus 3 is the bottom of urceolus 3, the blind end of urceolus 3 is the top of urceolus 3, the bottom of the bottom of inner core 2 and urceolus 3 is all connected with base 6, after packoff 1 installs, the barrel of inner core 2 plays buffer action, guarantee that adsorbent post core 7 is placed in the space of sealing, the barrel of urceolus 3 layer 8 that will keep out the wind is isolated with external environment condition simultaneously, makes to keep out the wind layers 8 to be placed in the space of sealing.
Simultaneously, the top of inner core 2 is connected with the top of urceolus 3, so when winning in the process of urceolus 3, inner core 2 can be along with urceolus 3 together moves, guarantee that inner core 2 and urceolus 3 are separated with base 6 simultaneously, and then the layer 8 that can guarantee to keep out the wind to be exposed to time of external environment condition identical with the open-assembly time of adsorbent post core 7, and then can further guarantee the accuracy of testing result.
It should be noted that, in this embodiment, only be to provide a kind of concrete set-up mode of packoff, certainly do not get rid of the set-up mode that adopts other yet, if the top of the top of inner core and urceolus is what be separatedly installed, first remove urceolus, then just can carry out the dismounting of inner core, when installing, inner core and then installation urceolus are first installed or are directly adopted the mode of building to carry out the production of packoff, guarantee that the inside of packoff forms two independently cavitys.
In further scheme, the bottom of urceolus 3 is provided with internal thread, and base 6 is provided with external thread, and the bottom of urceolus 3 and base 6 removably connect by internal thread and the externally threaded realization that cooperatively interacts, base 6 is provided with mounting groove, and the bottom of inner core 2 and the bottom land of mounting groove connect.So, can guarantee that the first container cavity 4 is the cavity of relative sealing with the second container cavity 5, and then can avoid adsorbent post core 7 contaminated.
Meanwhile, by screw thread, realize removably connecting between urceolus 3 and base 6, be convenient to carry out dismounting and the installation between urceolus 3 and base 6, can also guarantee that urceolus 6 layer 8 that will keep out the wind is isolated with external environment condition simultaneously, realize keeping out the wind layers 8 sealing.
It should be noted that, in this embodiment, connected mode between a kind of urceolus 3 and inner core 2 and base 6 is just disclosed, certainly, do not get rid of the set-up mode that adopts other yet, as adopted equally screw thread to realize dismountable setting inner core and base, or at base, holding mouth is set, the bottom of urceolus arranges flexible holding projection, when holding projection is placed in holding mouth, realizing packoff is connected with base, when holding projection is separated with holding mouth, under the effect of external force, packoff and base can be dismantled, realize both separation.
In addition, in this embodiment, the mounting groove of base is taper mounting groove 9, and taper mounting groove 9 arranges to its bottom land convergent along openend; The bottom of inner core 2 is arc bottom 2a, and the bottom land of arc bottom 2a and taper mounting groove 9 connects.So arrange, the openend diameter of taper mounting groove 9 is greater than the diameter of its bottom land, and the arc bottom 2a of being so convenient to inner core 2 realizes separated or butt with taper mounting groove 9; Meanwhile, because the setting of taper mounting groove 9 and the bottom of inner core 2 are set to arc bottom 2a, bottom and the bottom land of being convenient to inner core 2 connect, and then can guarantee the sealing of inner core 2.
It should be noted that, in this embodiment, the arc bottom 2a of inner core specifically refers to that the end face that the bottom land of inner core 2 and taper mounting groove 9 connects is curved end 2a, with this, can expand the contact area between inner core 2 and bottom land, is convenient to realize sealing.
In above-detailed the set-up mode of packoff, below other associated components to air sampler are being introduced.
In this embodiment; for the layer 8 that keeps out the wind is protected; also be provided with porous protective cover 10, a plurality of bleeder vents 11 are along the circumferential and axial distribution of porous protective cover 10, and porous protective cover 10 is arranged at the outside of the layer 8 that keeps out the wind and is placed in the second container cavity 5 together with the layer 8 that keeps out the wind.So, by porous protective cover 10 is set, can 8 play a supporting role to the layer that keeps out the wind, the objectionable impurities that can guarantee to be sampled in gas is set can infiltrates the layer 8 that keeps out the wind via bleeder vent 11 of bleeder vent 11 simultaneously, and then infiltrate adsorbent post cores 7 via the layer 8 that keeps out the wind.
It should be noted that, in this embodiment, adsorbent post core 7 is arranged at centre position, and the layer 8 that keeps out the wind is arranged at the periphery of adsorbent post core 7, and porous protective cover 10 is arranged at the periphery of the layer 8 that keeps out the wind.
In addition, in further scheme, the top of porous protective cover 8 is provided with external thread, this external thread matches with the internal thread that is arranged at the bottom of urceolus 3, so when needs are sampled, by rotation urceolus 3, can guarantee that urceolus 3 and inner core 2 are separated with base 6 simultaneously, staff is along axial lifting urceolus 3 and inner core 2, when the bottom of urceolus 3 arrives the top of porous protective cover 10, can be by rotation urceolus 3, assurance screws the internal thread of urceolus 3 and the external thread on porous protective cover 10 tops mutually, and then realize urceolus 3 and be fixedly connected with porous protective cover 10 tops, be convenient to lay packoff 1.After sampling finishes, by rotation urceolus 3, can guarantee that urceolus 3 and porous protective cover 10 are separated, staff, along axially making urceolus 3 decline, is then fixedly connected urceolus 3 and base 6 by screw thread, realizes the independent sealing of adsorbent post core 7.
It should be noted that, in this embodiment, in order to guarantee that the bottom of urceolus 3 can be connected with the top of porous protective cover 10 by screw thread, place, the top diameter of porous protective cover 10 and base 6 are identical for place, the position diameter of bottom of urceolus 3 is installed, and the form of the screw thread that the set thread forms in the top of porous protective cover 10 is set with base 6 is identical, so can guarantee that the top of urceolus 3 can be connected by screw thread with the top of porous protective cover 10.
In further scheme, adsorbent post core 7 comprises net cylinder and adsorbent, and adsorbent is filled in the hollow space of net cylinder, and adsorbent is activated charcoal preferably, certain adsorbent that adopts other of also not getting rid of.
In addition, the layer 8 that keeps out the wind, for filter paper layer or nuclear pore filter film layer or porous polyethylene rete, so can guarantee that harmful gas can infiltrate into adsorbent post core 7 via the layer 8 that keeps out the wind.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. an air sampler, comprise adsorbent post core, layer and base keep out the wind, described adsorbent post core and described in keep out the wind layer be all fixedly connected with described base, and the inner side of the layer that keeps out the wind described in described adsorbent post core is arranged at, it is characterized in that, also comprise the packoff with the first container cavity and the second container cavity, described packoff and described base detachably arrange, the top of the top of described the first container cavity and described the second container cavity is closed top, the openend of described the first container cavity and described the second container cavity is all positioned at the bottom of described packoff and all by described base, seals, wherein, described the second container cavity is around the outside that is arranged at described the first container cavity, and described adsorbent post core is placed in described the first container cavity, described in keep out the wind and be placed on described the second container cavity.
2. air sampler as claimed in claim 1, it is characterized in that, described packoff comprises inner core and urceolus, described urceolus is sheathed on the outside of described inner core, and the top of described inner core is connected with the top of described urceolus and is closed top, and the bottom of described inner core is all connected with described base with the bottom of described urceolus; Described inner core is provided with described the first container cavity, and described adsorbent post core is placed in described the first container cavity; Between the inside surface of described urceolus and the outside surface of described inner core, form described the second container cavity, described in keep out the wind and be placed on described the second container cavity.
3. air sampler as claimed in claim 2, is characterized in that, the bottom of described urceolus and described base by thread detachably arrange, and the bottom of described inner core and the mounting groove of described base connect.
4. air sampler as claimed in claim 3, is characterized in that, the mounting groove of described base is taper mounting groove, and described taper mounting groove arranges to its bottom land convergent along openend; The bottom of described inner core is arc bottom, and the bottom land of described arc bottom and described taper mounting groove connects.
5. air sampler as claimed in claim 3, is characterized in that, also comprises the porous protective cover that is provided with a plurality of bleeder vents, and outside and the described porous protective cover of the layer that keeps out the wind described in described porous protective cover is arranged at are arranged at described the second container cavity.
6. the air sampler of stating as claim 5, is characterized in that, the top of described porous protective cover is provided with the screw thread for matching with the bottom of described urceolus.
7. the air sampler as described in claim 1 to 6 any one, is characterized in that, described adsorbent post core comprises net cylinder and adsorbent, and described adsorbent is filled in described net cylinder.
8. the air sampler of stating as claim 7, is characterized in that, described in keep out the wind layer for filter paper layer or nuclear pore filter film layer or porous polyethylene rete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410422535.8A CN104181012B (en) | 2014-08-25 | 2014-08-25 | A kind of air sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410422535.8A CN104181012B (en) | 2014-08-25 | 2014-08-25 | A kind of air sampler |
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| CN104181012A true CN104181012A (en) | 2014-12-03 |
| CN104181012B CN104181012B (en) | 2016-08-31 |
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| CN201410422535.8A Active CN104181012B (en) | 2014-08-25 | 2014-08-25 | A kind of air sampler |
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| Publication number | Publication date |
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| CN104181012B (en) | 2016-08-31 |
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