CN204154546U - A kind of air sampler - Google Patents
A kind of air sampler Download PDFInfo
- Publication number
- CN204154546U CN204154546U CN201420482611.XU CN201420482611U CN204154546U CN 204154546 U CN204154546 U CN 204154546U CN 201420482611 U CN201420482611 U CN 201420482611U CN 204154546 U CN204154546 U CN 204154546U
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- container cavity
- wind
- layer
- urceolus
- base
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Abstract
This application discloses a kind of air sampler, comprise adsorbent post core, keep out the wind layer and base, adsorbent post core and the described layer that keeps out the wind all are 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 base are detachably arranged, the top of the first container cavity and the top of the second container cavity are closed top, and the openend of the first container cavity and the second container cavity is all positioned at the bottom of packoff and is all closed by base; Wherein, the second container cavity is around the outside being arranged at the first container cavity, and adsorbent post core is placed in described first container cavity, keeps out the wind and is placed on the second container cavity.So arrange can ensure to be sampled after, adsorbent post core is isolated with the layer that keeps out the wind, thus the sealing effectiveness played adsorbent post core, can avoid terminating in sampling the phenomenon that backstop stratification of wind pollutes adsorbent post core, and then the accuracy of testing result can be improved.
Description
Technical field
The utility model relates to air detection equipment technical field, particularly relates to a kind of air sampler.
Background technology
Air sampler is a kind of supplementary instrument, can gather or extract the tested gas pollutant in detected surrounding air, is used in conjunction the gaseous contamination substrate concentration that just can detect in detected surrounding air with instruments such as gas chromatographs.
Existing a kind of air sampler comprises adsorbent post core, the layer that keeps out the wind, base and outer cover, 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 the layer that keeps out the wind, and the layer that keeps out the wind all is connected with base with outer cover.
When sampling, need outer cover to extract, the gas in test environment can contact with adsorbent post core via the layer that keeps out the wind, and at the end of to be sampled, needs outer cover to be installed on base.
But because the layer that keeps out the wind is porous material layer, after sampling terminates, the gas molecule being adsorbed in the layer that keeps out the wind can pollute adsorbent post core, and causes testing result inaccurate.Meanwhile, owing to needing the installation carrying out adsorbent post core before sampling in prior art, in installation process, adsorbent post core can be caused contaminated because of contact 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.
Utility model content
In view of this, the object of the application is to provide a kind of air sampler, and sampling can be avoided to terminate the contaminated phenomenon of rear adsorbent post core, improves the accuracy of testing result.
This application provides a kind of air sampler, comprise adsorbent post core, keep out the wind layer and base, described adsorbent post core and the described layer that keeps out the wind all are fixedly connected with described base, and described adsorbent post core be arranged at described in keep out the wind the inner side of layer, also comprise the packoff with the first container cavity and the second container cavity, described packoff and described base are detachably arranged, the top of described first container cavity and the top of described second container cavity are closed top, the openend of described first container cavity and described second container cavity is all positioned at the bottom of described packoff and is all closed by described base, wherein, described second container cavity is around the outside being arranged at described first container cavity, and described adsorbent post core is placed in described first container cavity, described in keep out the wind and be placed on described 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 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 first container cavity, and described adsorbent post core is placed in described first container cavity; Form described second container cavity between the inside surface of described urceolus and the outside surface of described inner core, described in keep out the wind and be placed on described second container cavity.
Preferably, bottom and the described base by thread of described urceolus are detachably arranged, and the bottom of described inner core and the mounting groove of described base abut against.
Preferably, the mounting groove of described base is taper mounting groove, and described taper mounting groove is arranged along openend to its bottom land convergent; The bottom of described inner core is arc bottom, and the bottom land of described arc bottom and described taper mounting groove abuts against.
Preferably, also comprise the porous protective cover being provided with multiple bleeder vent, the outside of the layer that keeps out the wind described in described porous protective cover is arranged at and described porous protective cover is arranged at described 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, the layer that keeps out the wind described in is 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 all are 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 are detachably arranged, the top of the first container cavity and the top of the second container cavity are closed top, and the openend of the first container cavity and the second container cavity is all positioned at the bottom of packoff and is all closed by base; Wherein, the second container cavity is around the outside being arranged at the first container cavity, and adsorbent post core is placed in described first container cavity, keeps out the wind and is placed on the second container cavity.Setting like this, 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 keep out the wind layer and adsorbent post core isolated by the chamber wall of the first container cavity, namely the first container cavity is the space that adsorbent post core provides sealing, and then 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, thus can ensure to be sampled after, adsorbent post core is isolated with the layer that keeps out the wind, thus the sealing effectiveness played adsorbent post core, can avoid terminating in sampling the phenomenon that backstop stratification of wind pollutes adsorbent post core, and then the accuracy of testing result can be improved.Meanwhile, owing to not needing the installation carrying out adsorbent post core before sampling, and then the phenomenon that adsorbent post core polluted at installation process external environment can be avoided, and then the accuracy of testing result can be ensured further.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of air sampler in a kind of embodiment that Fig. 1 provides for the application;
Structural representation when air sampler is in 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, first container cavity 4, second container cavity 5, base 6, adsorbent post core 7, the layer 8 that keeps out the wind, taper mounting groove 9, porous protective cover 10, bleeder vent 11.
Embodiment
The utility model discloses a kind of air sampler, sampling can be avoided to terminate the contaminated phenomenon of rear adsorbent post core, improve the accuracy of testing result.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
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, structural representation when air sampler is in 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, keep out the wind layer 8 and base 6, the layer 8 that wherein keeps out the wind is arranged at the outside of adsorbent post core 7 and keep out the wind layer 8 and adsorbent post core 7 are all fixedly connected with base 6, also comprise the packoff 1 detachably arranged with base 6, wherein packoff 1 is provided with the first container cavity 4 and the second container cavity 5, the top of the first container cavity 4 and the top of the second container cavity 5 are closed top, and the openend of the first container cavity 4 and the openend of the second container cavity 5 are all positioned at the bottom of packoff 1.Wherein, the second container cavity 5 is around the outside being 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.
Setting like this, when sampling, packoff 1 is removed from base 6, the layer 8 that keeps out the wind will be exposed in detected environment, pollutant in air 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 time required for sampling, packoff 1 is installed on 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 is all closed by base, so keep out the wind layer 8 and adsorbent post core 7 isolated by the chamber wall of the first container cavity 4, namely the first container cavity 4 is the space that adsorbent post core 7 provides sealing, and then layer 8 pairs of adsorbent post 7 core 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, thus can ensure to be sampled after, adsorbent post core 7 is isolated with the layer 8 that keeps out the wind, thus the sealing effectiveness played adsorbent post core 7, can avoid terminating in sampling the phenomenon that backstop stratification of wind 8 pollutes adsorbent post core 7, and then the accuracy of testing result can be improved.Meanwhile, owing to not needing the installation carrying out adsorbent post core 7 before sampling, and then the phenomenon that adsorbent post core 7 polluted at installation process external environment can be avoided, and then the accuracy of testing result can be ensured further.
It should be noted that, in this embodiment, the openend of the first container cavity 4 and the openend of the second container cavity 5 are all positioned at the bottom of packoff 1, the top of the first container cavity 4 and the top of the second container cavity 5 are 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 abut against, the openend of the first container cavity 4 and the openend of the second container cavity 5 are all closed by base 6, and then can ensure sampling before and sampling terminate after, first container cavity 4 and the second container cavity 5 are two independent annular seal spaces, and then can ensure that adsorbent post core 7 is placed in separately in the first closed container cavity 4, thus the contaminated phenomenon of adsorbent post core 7 can be avoided.
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 at the bottom of packoff 1, can so that packoff 1 installation and ensure that adsorbent post core 7 and the layer 8 that keeps out the wind are placed in corresponding container cavity respectively, and by the openend of the openend of the first container cavity 4 and the second container cavity 5 being all arranged at the bottom of packoff 1, can ensure after sampling terminates, base 6 plays the effect of the openend of closed two container cavities, and then can ensure that the first container cavity 4 and the second container cavity 5 become closed cavity after sampling terminates, thus play the effect that adsorbent post core 7 and the layer 8 that keeps out the wind are sealed separately.
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 inner core 2 is connected with the top of urceolus 3 and both tops are closed top.The hollow space of inner core 2 is the first container cavity 4, adsorbent post core 7 is placed in the hollow space of inner core 2 and adsorbent post core 7 is placed in the first container cavity 4, the space formed between the outside surface of inner core 4 and the inside surface of urceolus 5 is the second container cavity 5, and the layer 8 that keeps out the wind is placed in the space between the outside surface of inner core 2 and the inside surface of urceolus 3 layer 8 that namely keeps out the wind and is placed in the second container cavity 5.
Setting like this, by urceolus 3 being sheathed on the outside of inner core 2, can ensure 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 inner core 2 is all connected with base 6 with the bottom of urceolus 3, after packoff 1 installs, the barrel of inner core 2 plays buffer action, ensure that adsorbent post core 7 is placed in the space of sealing, simultaneously the barrel of urceolus 3 will keep out the wind layer 8 and external environment condition isolated, the layer 8 that makes to keep out the wind is placed in the space of sealing.
Simultaneously, the top of the top of inner core 2 with urceolus 3 is connected, so when winning in the process of urceolus 3, inner core 2 together can move along with urceolus 3, namely ensure that inner core 2 and urceolus 3 are separated with base 6 simultaneously, and then the layer 8 that can ensure 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 the accuracy of testing result can be ensured further.
It should be noted that, in this embodiment, merely provide a kind of concrete set-up mode of packoff, certainly do not get rid of the set-up mode adopting other yet, if the top of inner core and the top of urceolus are what be separatedly installed, first remove urceolus, then the dismounting of inner core can just be carried out, when installing, inner core being first installed and then urceolus being installed or directly adopting the mode of building to carry out the production of packoff, ensureing 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 are removably connected 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 abut against.So, can ensure that the first container cavity 4 and the second container cavity 5 are the cavity of opposing seal, and then adsorbent post core 7 can be avoided contaminated.
Meanwhile, realize removably connecting between urceolus 3 and base 6 by screw thread, be convenient to carry out the dismounting between urceolus 3 and base 6 and installation, can also ensure simultaneously urceolus 6 will keep out the wind layer 8 and external environment condition isolated, realize the sealing to the layer 8 that keeps out the wind.
It should be noted that, in this embodiment, merely disclose a kind of urceolus 3 and the connected mode between inner core 2 and base 6, certainly, the set-up mode adopting other is not got rid of yet, as adopted screw thread to realize dismountable setting equally inner core and base, or holding mouth is set at base, the bottom of urceolus arranges flexible holding projection, when holding projection is placed in holding mouth, namely realize packoff to be connected with base, when holding is protruding and holding mouth is separated, under the effect of external force, packoff and base can be dismantled, the separation of both realizations.
In addition, in this embodiment, the mounting groove of base is taper mounting groove 9, and taper mounting groove 9 is arranged along openend to its bottom land convergent; The bottom of inner core 2 is arc bottom 2a, and the bottom land of arc bottom 2a and taper mounting groove 9 abuts against.Setting like this, the openend diameter of taper mounting groove 9 is greater than the diameter of its bottom land, and the arc bottom 2a being so convenient to inner core 2 realizes being separated or abutting with taper mounting groove 9; Meanwhile, due to the setting of taper mounting groove 9 and the bottom of inner core 2 is set to arc bottom 2a, bottom and the bottom land of being convenient to inner core 2 abut against, and then can ensure 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 inner core 2 and the bottom land of taper mounting groove 9 abut against is curved end 2a, can expand the contact area between inner core 2 and bottom land, be convenient to realize sealing with this.
The set-up mode of packoff in above-detailed, is hereafter being introduced to other associated components of air sampler.
In this embodiment; in order to protect the layer 8 that keeps out the wind; also be provided with porous protective cover 10, multiple bleeder vent 11 is along the circumference of porous protective cover 10 and axial distribution, 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 arranging porous protective cover 10, can play a supporting role to the layer 8 that keeps out the wind, arranging of bleeder vent 11 can ensure that the objectionable impurities be sampled in gas can infiltrate via bleeder vent 11 layer 8 that keeps out the wind simultaneously, and then infiltrates adsorbent post core 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 of the bottom being arranged at urceolus 3, so when needs are sampled, by rotating urceolus 3, can ensure that urceolus 3 and inner core 2 are separated with base 6 simultaneously, staff axially promotes urceolus 3 and inner core 2, when the bottom of urceolus 3 arrives the top of porous protective cover 10, can by rotating urceolus 3, ensure the internal thread of urceolus 3 is screwed mutually with the external thread on porous protective cover 10 top, and then realize urceolus 3 and be fixedly connected with porous protective cover 10 top, be convenient to lay packoff 1.After sampling terminates, by rotating urceolus 3, can ensure that urceolus 3 and porous protective cover 10 are separated, staff axially makes urceolus 3 decline, and then by screw thread, urceolus 3 and base 6 is fixedly connected, realizes the independent sealing of adsorbent post core 7.
It should be noted that, in this embodiment, in order to ensure that the bottom of urceolus 3 can be connected by the top of screw thread with porous protective cover 10, place, the top diameter of porous protective cover 10 is identical for place, the position diameter installing the bottom of urceolus 3 with base 6, and thread forms set by the top of porous protective cover 10 is identical with the form of the screw thread set by base 6, so can ensure 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, does not certainly also get rid of the adsorbent adopting other.
In addition, the layer 8 of keeping out the wind, for filter paper layer or nuclear pore filter film layer or porous polyethylene rete, so can ensure 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 what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model 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 (8)
1. an air sampler, comprise adsorbent post core, keep out the wind layer and base, described adsorbent post core and the described layer that keeps out the wind all are fixedly connected with described base, and described adsorbent post core be arranged at described in keep out the wind the inner side of layer, it is characterized in that, also comprise the packoff with the first container cavity and the second container cavity, described packoff and described base are detachably arranged, the top of described first container cavity and the top of described second container cavity are closed top, the openend of described first container cavity and described second container cavity is all positioned at the bottom of described packoff and is all closed by described base, wherein, described second container cavity is around the outside being arranged at described first container cavity, and described adsorbent post core is placed in described first container cavity, described in keep out the wind and be placed on described 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, 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 first container cavity, and described adsorbent post core is placed in described first container cavity; Form described second container cavity between the inside surface of described urceolus and the outside surface of described inner core, described in keep out the wind and be placed on described second container cavity.
3. air sampler as claimed in claim 2, it is characterized in that, bottom and the described base by thread of described urceolus are detachably arranged, and the bottom of described inner core and the mounting groove of described base abut against.
4. air sampler as claimed in claim 3, it is characterized in that, the mounting groove of described base is taper mounting groove, and described taper mounting groove is arranged along openend to its bottom land convergent; The bottom of described inner core is arc bottom, and the bottom land of described arc bottom and described taper mounting groove abuts against.
5. air sampler as claimed in claim 3, is characterized in that, also comprise the porous protective cover being provided with multiple bleeder vent, the outside of the layer that keeps out the wind described in described porous protective cover is arranged at and described porous protective cover is arranged at described second container cavity.
6. as the air sampler that claim 5 is stated, it 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 any one of claim 1 to 6, is characterized in that, described adsorbent post core comprises net cylinder and adsorbent, and described adsorbent is filled in described net cylinder.
8., as the air sampler that claim 7 is stated, it is characterized in that, described in the layer that keeps out the wind be filter paper layer or nuclear pore filter film layer or porous polyethylene rete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420482611.XU CN204154546U (en) | 2014-08-25 | 2014-08-25 | A kind of air sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420482611.XU CN204154546U (en) | 2014-08-25 | 2014-08-25 | A kind of air sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204154546U true CN204154546U (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420482611.XU Withdrawn - After Issue CN204154546U (en) | 2014-08-25 | 2014-08-25 | A kind of air sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204154546U (en) |
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2014
- 2014-08-25 CN CN201420482611.XU patent/CN204154546U/en not_active Withdrawn - After Issue
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