CN207095932U - gaseous pollutant sampling device and gaseous pollutant adsorption system - Google Patents
gaseous pollutant sampling device and gaseous pollutant adsorption system Download PDFInfo
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- CN207095932U CN207095932U CN201721620520.8U CN201721620520U CN207095932U CN 207095932 U CN207095932 U CN 207095932U CN 201721620520 U CN201721620520 U CN 201721620520U CN 207095932 U CN207095932 U CN 207095932U
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Abstract
The utility model provides a gaseous pollutant sampling device and gaseous pollutant adsorption system relates to the technical field that gaseous pollutant detected, include: the device comprises an absorption device, an adsorption device, a buffer device and an air suction device. Through setting up buffer, will enter into the gas drying in the getter device, reduce the hydrone in the gas, avoid the hydrone in the gas to damage the getter device, it can't adsorb the solid particle pollutant in the gas collection system who has alleviated existence among the prior art, the sampling pump easily receives the technical problem of moisture damage, has realized the effective absorption of solid particle pollutant to and the technical effect of the life of extension sampling pump.
Description
Technical field
Detection for gaseous contaminants technical field is the utility model is related to, more particularly, to a kind of gaseous contaminant sampling apparatus
And gas pollutant adsorption system.
Background technology
Because China's haze is increasingly severe, people also gradually step up to the consciousness of environmental protection, more people's concerns
Air quality, the at present monitoring of air molecule pollution are generally sampled using concentration method.
Gas collecting device generally includes sampling pump, absorption plant and for connecting sampling pump and absorption plant or absorption
The connecting pipe of device and absorption plant, substantial amounts of gas is absorbed by absorbing liquid or solid absorbent or detention, make
Originally the less polluter of concentration is concentrated, so that analysis determines.
But used gas collecting device is unable to adsorbent solid particulate pollutant, the hydrone in gas can enter
Into sampling pump, after long-term use of, can cause sampling pump because circuit board make moist fail, the life-span of sampling pump can be by significantly
Shorten.
Utility model content
The purpose of this utility model is to provide a kind of gaseous contaminant sampling apparatus and gas pollutant adsorption system, with
Alleviate present in prior art in gas collecting device can not adsorbent solid particulate pollutant, the damage of sampling pump moisture-sensitive
Technical problem.
Gaseous contaminant sampling apparatus provided by the utility model, including：Absorption plant, adsorbent equipment, buffer unit and
Getter device；
Absorption plant is provided with air inlet, and first gas passage, absorption dress are provided between absorption plant and buffer unit
Put and be arranged at including the first absorbing cylinder and the second absorbing cylinder, the first absorbing cylinder in absorption plant, air inlet passes through the first absorbing cylinder
Connected with absorption plant, the second absorbing cylinder is arranged in buffer unit, and first gas passage is filled by the second absorbing cylinder and buffering
Put connection；
Getter device is connected with buffer unit, and getter device is used to by air inlet enter gas in absorption plant,
And the gas in absorption plant is entered by gas passage in buffer unit, the first absorbing cylinder is used successively with the second absorbing cylinder
Particulate pollutant in adsorbed gas, buffer unit is used for dry gas, and dried gas is transferred into getter device
It is interior.
Further, absorption plant includes the first absorption bottle and the second absorption bottle；
Air inlet is arranged in the side wall of the first absorption bottle, and the first absorbing cylinder connects with air inlet, in the first absorption bottle
Gas is entered in the second absorption bottle by second gas passage, and the gas in the second absorption bottle is entered by first gas passage
Into buffer unit.
Further, absorption plant also included for the first communicating pipe；
The first absorbing liquid and the second absorbing liquid are respectively arranged with first absorption bottle and the second absorption bottle, the first communicating pipe
One end is connected with the first absorbing cylinder, and the other end of the first communicating pipe is extend into the first absorbing liquid, so that the first absorbing liquid absorbs
Gaseous contaminant；
The port position positioned at the first absorption bottle of second gas passage is higher than the liquid level position of the first absorbing liquid, the second gas
The another port of body passage is extend into the second absorbing liquid, so that the second absorbing liquid absorbs the gaseous contamination in the first absorption bottle
Thing.
Further, buffer unit includes surge flask and drier；
Second absorbing cylinder is arranged in surge flask, and first gas passage connects with the second absorbing cylinder, and the second absorbing cylinder is with delaying
The inwall connection of bottle is rushed, the second absorbing cylinder is used to adsorb the gas particles pollutant in the second absorption bottle；
Drier is arranged at the bottom of surge flask, drier be used for will after the processing of the second absorbing cylinder gas absorption dehydration.
Further, buffer unit also included for the second communicating pipe；
One end of second communicating pipe is connected with the second absorbing cylinder, and the other end of the second communicating pipe is extend into drier, with
The gas after the processing of the second absorbing cylinder is set fully to be contacted with drier.
Further, getter device includes asepwirator pump and third gas passage；
Surge flask is provided with gas outlet, and asepwirator pump is connected by third gas passage with gas outlet, and asepwirator pump is used for will be slow
Rush bottle and produce negative pressure, so that the gas in surge flask is entered in asepwirator pump by third gas passage.
Further, drier is any of silica gel particle, calcium chloride and activated alumina.
Further, the material of the first absorbing cylinder and the second absorbing cylinder is high polymer material.
Further, high polymer material is polyurethane material.
Gas pollutant adsorption system provided by the utility model, including gaseous contaminant sampling apparatus.
Gaseous contaminant sampling apparatus provided by the utility model, including：Absorption plant, adsorbent equipment, buffer unit and
Getter device；Absorption plant is provided with air inlet, and first gas passage, absorption dress are provided between absorption plant and buffer unit
Put and be arranged at including the first absorbing cylinder and the second absorbing cylinder, the first absorbing cylinder in absorption plant, air inlet passes through the first absorbing cylinder
Connected with absorption plant, the second absorbing cylinder is arranged in buffer unit, and first gas passage is filled by the second absorbing cylinder and buffering
Put connection；Getter device is connected with buffer unit, and getter device is used to by air inlet enter gas in absorption plant, and
The gas in absorption plant is set to be entered by gas passage in buffer unit, the first absorbing cylinder is used for successively with the second absorbing cylinder
Particulate pollutant in adsorbed gas, buffer unit is used for dry gas, and dried gas is transferred in getter device.
By setting buffer unit, the gas that will go into getter device is dried, and is reduced the hydrone in gas, is avoided in gas
Hydrone damages getter device, and alleviating can not adsorbent solid particle contamination in gas collecting device present in prior art
Thing, the technical problem of sampling pump moisture-sensitive damage, effective absorption of solid grain contamination is realized, and extend sampling pump
The technique effect of service life.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the overall structure diagram for the gaseous contaminant sampling apparatus that the utility model embodiment provides；
Fig. 2 is the structural representation of the absorption plant in the gaseous contaminant sampling apparatus that the utility model embodiment provides
Figure；
Fig. 3 is the structural representation of the buffer unit in the gaseous contaminant sampling apparatus that the utility model embodiment provides
Figure；
Fig. 4 is the structural representation of the getter device in the gaseous contaminant sampling apparatus that the utility model embodiment provides
Figure.
Icon：100- absorption plants；The absorption bottles of 110- first；111- air inlets；The absorbing liquids of 112- first；120- second inhales
Receive bottle；The absorbing liquids of 121- second；130- second gas passages；The communicating pipes of 140- first；200- adsorbent equipments；210- first is adsorbed
Cylinder；The absorbing cylinders of 220- second；300- buffer units；310- surge flasks；320- drier；The communicating pipes of 330- second；400- air-breathings
Device；410- asepwirator pumps；420- third gas passages；500- first gas passages.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, such as occur term " " center ", " on ", " under ", " left side ",
" right side ", " vertical ", " level ", " interior ", " outer " etc., orientation or position relationship indicated by it be based on orientation shown in the drawings or
Position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply signified device or member
Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
In addition, such as there is term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or implying relative
Importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term such as occurs in description of the present utility model
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirect by intermediary
It is connected, can is the connection of two element internals.For the ordinary skill in the art, on being understood with concrete condition
State concrete meaning of the term in the utility model.
Fig. 1 is the overall structure diagram for the gaseous contaminant sampling apparatus that the present embodiment provides；Fig. 2 carries for the present embodiment
The structural representation of absorption plant in the gaseous contaminant sampling apparatus of confession；Fig. 3 is the gaseous contaminant that the present embodiment provides
The structural representation of buffer unit in sampling apparatus；Fig. 4 is the suction in the gaseous contaminant sampling apparatus that the present embodiment provides
The structural representation of device of air.
As Figure 1-4, the gaseous contaminant sampling apparatus that the present embodiment provides, including：Absorption plant 100, absorption dress
Put 200, buffer unit 300 and getter device 400；Absorption plant 100 is provided with air inlet 111, and absorption plant 100 fills with buffering
First gas passage 500 is provided between putting 300, adsorbent equipment 200 includes the first absorbing cylinder 210 and the second absorbing cylinder 220, the
One absorbing cylinder 210 is arranged in absorption plant 100, and air inlet 111 is connected by the first absorbing cylinder 210 with absorption plant 100, the
Two absorbing cylinders 220 are arranged in buffer unit 300, and first gas passage 500 passes through the second absorbing cylinder 220 and buffer unit 300
Connection；Getter device 400 is connected with buffer unit 300, and getter device 400 is used to gas entering suction by air inlet 111
In receiving apparatus 100, and the gas in absorption plant 100 is set to be entered by gas passage in buffer unit 300, the first absorbing cylinder
210 and second particulate pollutant that is used for successively in adsorbed gas of absorbing cylinder 220, buffer unit 300 is used for dry gas, and general
Dried gas is transferred in getter device 400.
Wherein, getter device 400 makes gas in absorption plant 100 and buffer unit 300 produce negative pressure, makes gas from entering
Gas port 111 is entered in absorption plant 100, and the gas after gas treatment in absorption plant 100 passes through first gas passage 500
Enter in buffer unit 300, buffer unit 300 dries gas, make the gas liquid molecule that is flowed through in getter device 400 compared with
It is few, it is fragile to prevent that getter device 400 from making moist.
First absorbing cylinder 210 is arranged in absorption plant 100, is made from the solid particle in the gas of the entrance of air inlet 111
Absorption realizes that the concentration of solid grain contamination is collected on the first absorbing cylinder 210.
Second absorbing cylinder 220 is arranged in buffer unit 300, makes to enter in buffer unit 300 out of absorption plant 100
Gas in solid particle adsorb on the second absorbing cylinder 220, further collect solid grain contamination, absorption more adds
Entirely.
Further, the material of the first absorbing cylinder 210 and the second absorbing cylinder 220 is high polymer material.
Further, high polymer material is polyurethane material.
The material of first absorbing cylinder 210 and the second absorbing cylinder 220 can be a variety of, such as：Polyurethane, aluminum oxide and natural
Clay etc., it is preferred that the material of the first absorbing cylinder 210 and the second absorbing cylinder 220 is polyurethane material.
The gaseous contaminant sampling apparatus that the present embodiment provides, including：Absorption plant 100, adsorbent equipment 200, buffering dress
Put 300 and getter device 400；Absorption plant 100 is provided with air inlet 111, is set between absorption plant 100 and buffer unit 300
First gas passage 500 is equipped with, adsorbent equipment 200 includes the first absorbing cylinder 210 and the second absorbing cylinder 220, the first absorbing cylinder 210
It is arranged in absorption plant 100, air inlet 111 is connected by the first absorbing cylinder 210 with absorption plant 100, the second absorbing cylinder 220
It is arranged in buffer unit 300, first gas passage 500 is connected by the second absorbing cylinder 220 with buffer unit 300；Air-breathing fills
400 to be put to be connected with buffer unit 300, getter device 400 is used to by air inlet 111 enter gas in absorption plant 100,
And the gas in absorption plant 100 is entered by gas passage in buffer unit 300, the first absorbing cylinder 210 and second is inhaled
The particulate pollutant that attached cylinder 220 is used in adsorbed gas successively, buffer unit 300 are used for dry gas, and by dried gas
Body is transferred in getter device 400.By setting buffer unit 300, the gas that will go into getter device 400 is dried, and is subtracted
Hydrone in few gas, avoid the hydrone in gas from damaging getter device 400, alleviate gas present in prior art
In harvester can not adsorbent solid particulate pollutant, sampling pump moisture-sensitive damage technical problem, realize solid particle dirt
Effective absorption of thing is contaminated, and extends the technique effect of the service life of sampling pump.
On the basis of above-described embodiment, further, the suction in the gaseous contaminant sampling apparatus that the present embodiment provides
Receiving apparatus 100 includes the first absorption bottle 110 and the second absorption bottle 120；Air inlet 111 is arranged at the side wall of the first absorption bottle 110
On, the first absorbing cylinder 210 is connected with air inlet 111, and the gas in the first absorption bottle 110 is entered by second gas passage 130
Into the second absorption bottle 120, the gas in the second absorption bottle 120 enters buffer unit 300 by first gas passage 500
It is interior.
Further, absorption plant 100 also included for the first communicating pipe 140；First absorption bottle 110 and the second absorption bottle 120
The first absorbing liquid 112 and the second absorbing liquid 121 are inside respectively arranged with, one end of the first communicating pipe 140 connects with the first absorbing cylinder 210
Logical, the other end of the first communicating pipe 140 is extend into the first absorbing liquid 112, so that the first absorbing liquid 112 absorbs gaseous contamination
Thing；The port position positioned at the first absorption bottle 110 of second gas passage 130 is higher than the liquid level position of the first absorbing liquid 112, the
The another port of two gas passages 130 is extend into the second absorbing liquid 121, so that the second absorbing liquid 121 absorbs the first absorption bottle
Gaseous contaminant in 110.
Wherein, the first absorbing liquid 112 and second is set to absorb respectively in the first absorption bottle 110 and the second absorption bottle 120
Liquid 121, the pollutant in gas is absorbed in the first absorbing liquid 112 and the second absorbing liquid 121, makes the pollutant in gas dense
Shrink in the first absorbing liquid 112 and the second absorbing liquid 121, by analyze in the first absorbing liquid 112 and the second absorbing liquid 121 into
Point, can determine whether out which pollutant is included in gas, the first absorbing liquid 112 and the second absorbing liquid 121 are arranged to pure water, in pure water
Impurity is not contained, when avoiding analyzing composition in liquid, impurity causes error to analysis.
The port that second gas passage 130 is located at the second absorption bottle 120 is extend into the second absorbing liquid 121, makes the first suction
The gas received in bottle 110 is directly contacted by second gas passage 130 with the second absorbing liquid 121 in the second absorption bottle 120, is made
Second absorbing liquid, 121 more preferable concentrated gas pollutant.
The gaseous contaminant sampling apparatus that the present embodiment provides, by the first absorption bottle 110 and the second absorption bottle 120
The first absorbing liquid 112 and the second absorbing liquid 121 are placed, the pollutant in gas is concentrated in into the first absorbing liquid 112 and second inhales
Receive in liquid 121, facilitate researcher to analyze gas pollutant composition.
It is further, slow in the gaseous contaminant sampling apparatus that the present embodiment provides on the basis of above-described embodiment
Flushing device 300 includes surge flask 310 and drier 320；Second absorbing cylinder 220 is arranged in surge flask 310, first gas passage
500 are connected with the second absorbing cylinder 220, and the second absorbing cylinder 220 is connected with the inwall of surge flask 310, and the second absorbing cylinder 220 is used to inhale
Gas particles pollutant in attached second absorption bottle 120；Drier 320 is arranged at the bottom of surge flask 310, and drier 320 is used
In will after the second absorbing cylinder 220 is handled gas absorption dehydration.
Wherein, drier 320 is placed in surge flask 310, is entered by first gas passage 500 in surge flask 310
Gas, dried by drier 320, reduce the fluid molecule in gas, the gas for making to enter in getter device 400 is done
It is dry, avoid, because of gas moisture, damaging getter device 400, realize the technique effect for improving the service life of getter device 400.
Further, drier 320 is any of silica gel particle, calcium chloride and activated alumina.
Drier 320 can be a variety of, such as：Silica gel particle, calcium chloride and activated alumina etc., can be according to actual conditions
Select the different species of drier 320.
Further, buffer unit 300 also included for the second communicating pipe 330；One end of second communicating pipe 330 and the second absorption
Cylinder 220 is connected, and the other end of the second communicating pipe 330 is extend into drier 320, so that the gas after the processing of the second absorbing cylinder 220
Body fully contacts with drier 320.
Wherein, the gas entered by first gas passage 500 in surge flask 310, first adsorbed through the second absorbing cylinder 220
Particulate matter in gas, fully contacted with the drier 320 in surge flask 310 by the second communicating pipe 330 after absorption, make gas
Fully dry.
Further, getter device 400 includes asepwirator pump 410 and third gas passage 420；Surge flask 310 is provided with out
Gas port, asepwirator pump 410 are connected by third gas passage 420 with gas outlet, and asepwirator pump 410 is negative for surge flask 310 to be produced
Pressure, so that the gas in surge flask 310 is entered in asepwirator pump 410 by third gas passage 420.
Wherein, the air-breathing of asepwirator pump 410, absorption plant 100 and buffer unit 300 is produced negative pressure, ensure gas circulation, inhale
Air pump 410 is connected by third gas passage 420 with surge flask 310, can be fixedly connected in the side wall of third gas passage 420 dry
Drying prescription 320, the gas in third gas passage 420 is further dried, realizes repeatedly dry effect.
The present embodiment provides gaseous contaminant sampling apparatus, by placing drier 320 in surge flask 310, makes entrance
Dried to the gas in asepwirator pump 410, avoid, because of gas moisture, damaging asepwirator pump 410, effectively improving the use of asepwirator pump 410
In the life-span, more suitably promote the use of.
The gas pollutant adsorption system that the present embodiment provides, including gaseous contaminant sampling apparatus.
Because the technique effect of the gas pollutant adsorption system of the present embodiment offer samples with above-mentioned gaseous contaminant
The technique effect of device is identical, is not repeating herein.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
- A kind of 1. gaseous contaminant sampling apparatus, it is characterised in that including：Absorption plant, adsorbent equipment, buffer unit and air-breathing Device；The absorption plant is provided with air inlet, and being provided with first gas between the absorption plant and the buffer unit leads to Road, the adsorbent equipment include the first absorbing cylinder and the second absorbing cylinder, and first absorbing cylinder is arranged in the absorption plant, The air inlet is connected by first absorbing cylinder with the absorption plant, and second absorbing cylinder is arranged at the buffering dress In putting, the first gas passage is connected by second absorbing cylinder with the buffer unit；The getter device is connected with the buffer unit, and the getter device is used to enter gas by the air inlet In the absorption plant, and the gas in the absorption plant is set to be entered by the gas passage in the buffer unit, The particulate pollutant that first absorbing cylinder is used in adsorbed gas successively with second absorbing cylinder, the buffer unit are used for Dry gas, and dried gas is transferred in the getter device.
- 2. gaseous contaminant sampling apparatus according to claim 1, it is characterised in that the absorption plant includes first and inhaled Receive bottle and the second absorption bottle；The air inlet is arranged in the side wall of first absorption bottle, and first absorbing cylinder connects with the air inlet, institute The gas stated in the first absorption bottle is entered in second absorption bottle by second gas passage, in second absorption bottle Gas is entered in the buffer unit by the first gas passage.
- 3. gaseous contaminant sampling apparatus according to claim 2, it is characterised in that the absorption plant also includes first Communicating pipe；It is respectively arranged with the first absorbing liquid and the second absorbing liquid in first absorption bottle and second absorption bottle, described first One end of communicating pipe connects with first absorbing cylinder, and the other end of first communicating pipe extend into first absorbing liquid In, so that first absorbing liquid absorbs gaseous contaminant；The port position positioned at first absorption bottle of the second gas passage is higher than the liquid level position of first absorbing liquid Put, the another port of the second gas passage is extend into second absorbing liquid, so that second absorbing liquid absorbs institute State the gaseous contaminant in the first absorption bottle.
- 4. gaseous contaminant sampling apparatus according to claim 3, it is characterised in that the buffer unit includes surge flask And drier；Second absorbing cylinder is arranged in the surge flask, and the first gas passage connects with second absorbing cylinder, institute The inwall that the second absorbing cylinder is stated with the surge flask is connected, and second absorbing cylinder is used to adsorb the gas in second absorption bottle Body particulate pollutant；The drier is arranged at the bottom of the surge flask, the drier be used for will after second absorbing cylinder processing gas Body absorption dehydration.
- 5. gaseous contaminant sampling apparatus according to claim 4, it is characterised in that the buffer unit also includes second Communicating pipe；One end of second communicating pipe connects with second absorbing cylinder, and the other end of second communicating pipe extend into described In drier, so that gas fully contacts with the drier after second absorbing cylinder processing.
- 6. gaseous contaminant sampling apparatus according to claim 5, it is characterised in that the getter device includes asepwirator pump With third gas passage；The surge flask is provided with gas outlet, and the asepwirator pump is connected by the third gas passage with the gas outlet, institute State asepwirator pump to be used to the surge flask producing negative pressure, so that the gas in the surge flask is entered by the third gas passage Enter into the asepwirator pump.
- 7. gaseous contaminant sampling apparatus according to claim 5, it is characterised in that the drier be silica gel particle, Any of calcium chloride and activated alumina.
- 8. gaseous contaminant sampling apparatus according to claim 1, it is characterised in that first absorbing cylinder and described The material of two absorbing cylinders is high polymer material.
- 9. gaseous contaminant sampling apparatus according to claim 8, it is characterised in that the high polymer material is polyurethane Material.
- 10. a kind of gas pollutant adsorption system, it is characterised in that dirty including the gaseous state as described in claim any one of 1-9 Contaminate thing sampling apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721620520.8U CN207095932U (en) | 2017-11-27 | 2017-11-27 | gaseous pollutant sampling device and gaseous pollutant adsorption system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721620520.8U CN207095932U (en) | 2017-11-27 | 2017-11-27 | gaseous pollutant sampling device and gaseous pollutant adsorption system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207095932U true CN207095932U (en) | 2018-03-13 |
Family
ID=61538681
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721620520.8U Expired - Fee Related CN207095932U (en) | 2017-11-27 | 2017-11-27 | gaseous pollutant sampling device and gaseous pollutant adsorption system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207095932U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326371A (en) * | 2020-09-29 | 2021-02-05 | 王俭 | Sampling device for gaseous pollutant sample discharged by boiler combustion in alpine region |
-
2017
- 2017-11-27 CN CN201721620520.8U patent/CN207095932U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326371A (en) * | 2020-09-29 | 2021-02-05 | 王俭 | Sampling device for gaseous pollutant sample discharged by boiler combustion in alpine region |
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Granted publication date: 20180313 Termination date: 20191127 |