CN211205932U - Portable individual air sampler - Google Patents
Portable individual air sampler Download PDFInfo
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- CN211205932U CN211205932U CN201921877812.9U CN201921877812U CN211205932U CN 211205932 U CN211205932 U CN 211205932U CN 201921877812 U CN201921877812 U CN 201921877812U CN 211205932 U CN211205932 U CN 211205932U
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Abstract
The utility model discloses a portable individual air sampler, which comprises a sampler body, wherein an air inlet cavity, a sampling cavity and an element cavity are sequentially arranged in the sampler from top to bottom; the sampling cavity is internally divided into a plurality of sampling units, and each sampling unit comprises a ventilation cavity and a plurality of air collecting cavities; the lower end of the air inlet cavity is communicated with the sampling unit through an air inlet pipeline; the lower end of the air inlet pipeline corresponding to the air collection cavity is connected with a vacuum sampling bag; an air suction pump and a controller are arranged in the element cavity, and an air path valve is arranged between the element cavity and the sampling cavity; the air inlet end of the air path valve is communicated with only one sampling unit at the same time, the air inlet end can be switched and communicated among the sampling units, the air outlet end of the air path valve is communicated with the air inlet end of the air extracting pump, and the air outlet end of the air extracting pump is communicated with the outside. The utility model can remove the residual gas in the sampler and ensure the purity of the sample; can store multiunit gas sample, and can not the intermix interference between the multiunit sample.
Description
Technical Field
The utility model relates to an empty gas detection surveys technical field, especially relates to a portable individual air sampler.
Background
A large number of environmental problems are generated while the economy of China is developed, and the social attention degree on the environmental problems is higher and higher. The air environment is an important component of the natural environment, has extremely high association with the daily life of people, and along with the frequent occurrence of a series of air pollution events such as haze, indoor decoration pollution and the like, people are more and more interested in the air quality of the people.
The air sampler is used for collecting a gas sample, which is a precondition for analyzing and detecting the quality of air, and the existing air sampler cannot remove the gas left in the sampler after the last gas sampling, so that the gas sampled sample is impure, and the detection and analysis result is not accurate; furthermore, the existing air sampler is difficult to carry a plurality of different air samples in a single sampling device at the same time, and the detection precision of the samples is not influenced by gas mixing.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the utility model provides a portable individual air sampler which can effectively remove the residual gas in the sampler and ensure the purity of the collected gas sample; the utility model discloses can also store the different gas sample of multiunit simultaneously, and can not influence the detection precision because of the intermixing between the gas sample of multiunit.
The technical scheme is as follows: in order to achieve the purpose, the portable individual air sampler comprises a sampler body, wherein an air inlet cavity, a sampling cavity and an element cavity are sequentially arranged in the sampler body from top to bottom; the sampling cavity is internally divided into a plurality of sampling units which are not communicated with each other, and each sampling unit comprises a ventilation cavity and a plurality of air collecting cavities;
the upper end of the air inlet cavity is connected with a gas collecting device, the lower end of the air inlet cavity is communicated with the sampling units through independent air inlet pipelines respectively, and the air inlet pipelines are provided with independent opening and closing valves; the lower end of the air inlet pipeline corresponding to the air collection cavity is connected with a vacuum sampling bag;
the element cavity is not communicated with the sampling cavity, an air suction pump and a controller are arranged in the element cavity, and an air path valve is arranged between the element cavity and the sampling cavity; the open-close valve and the gas circuit valve are both electrically connected with the controller; the air inlet end of the air path valve is communicated with only one sampling unit at the same time, the air inlet end of the air path valve can be switched and communicated among a plurality of sampling units, the air outlet end of the air path valve is communicated with the air inlet end of the air extracting pump, and the air outlet end of the air extracting pump is communicated with the outside.
Furthermore, the sampling units are columnar fan-shaped chambers, and a plurality of sampling units are connected and spliced to form a cylindrical sampling cavity; the gas path valve is in a rotatable disc shape and is arranged below the sampling cavity in a clinging manner; the disc surface of the air path valve is provided with a vertical air path hole, and the air path valve rotates to drive the air path hole to be switched among the plurality of sampling units.
Furthermore, the bottle wall of the sampler is provided with an observation window which surrounds a circle along the circumferential direction.
Furthermore, the gas collection device is arranged in a containing cavity above the gas inlet cavity, the gas collection device comprises a connecting hose and a sampling gun, the sampling gun is formed by connecting a sampling gun head and a telescopic sampling pipe body, and an annular clamping groove is formed in the sampling gun head; a clamping plate is arranged above the containing cavity, and a clamping groove opening is formed in the clamping plate; the sampling gun head is clamped on the clamping plate through the matching limit of the annular clamping groove and the clamping groove opening.
Furthermore, the sampling gun head is clamped in the middle of the clamping plate, a hemispherical flow homogenizing plate is arranged above the clamping plate, and a dust cover is covered above the flow homogenizing plate.
Further, a handle is arranged above the sampler, and a pulley is arranged at the bottom end of the sampler.
Has the advantages that: the utility model discloses a portable individual air sampler, including the air inlet chamber that communicates, sampling chamber and component chamber, divide into a cavity of taking a breath and a plurality of air collection chamber in the sampling chamber, be provided with the aspiration pump in the component chamber, the setting of the cavity of taking a breath can discharge the residual gas in the sample thief, ensures the purity of the gas sample of sampling, and a plurality of air collection chamber can deposit different gas samples respectively, and can not take place to mix between the sample; the gas sampling device of the air sampler is arranged in a telescopic manner and is easy to store in the storage cavity, and the acquisition gun head comprises two working modes of clamping on the clamping plate and removing direct sampling so as to adapt to various working scenes; the sampler is provided with a handle and a pulley, and is convenient to carry.
Drawings
FIG. 1 is a schematic view of an air sampler as a whole;
FIG. 2 is a schematic overall view of the air intake chamber;
FIG. 3 is a top view of the air intake chamber;
FIG. 4 is a schematic view of the receiving chamber.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The portable individual air sampler as shown in fig. 1 to 4 comprises a sampler 1 body, wherein an air inlet cavity 3, a sampling cavity 4 and an element cavity 2 are sequentially arranged in the sampler 1 from top to bottom; the sampling cavity 4 is internally divided into a plurality of sampling units 5, the sampling units 5 are not communicated with each other, each sampling unit 5 comprises a ventilation cavity 6 and a plurality of air collection cavities 7, the ventilation cavity 6 is used for cleaning residual gas, the air collection cavities 7 are used for collecting and storing gas samples, and the specific working mode is detailed below;
the upper end of the air inlet cavity 3 is connected with a gas collecting device 13, the gas collecting device 13 is used for collecting gas samples, the lower end of the air inlet cavity 3 is communicated with the plurality of sampling units 5 through independent air inlet pipelines 9, independent on-off valves 10 are arranged on the plurality of air inlet pipelines 9, and the on-off valves 10 can control the on-off state of the air inlet pipelines 9; the lower end of the air inlet pipeline 9 corresponding to the air collection cavity 7 is connected with a vacuum sampling bag 8, and the vacuum sampling bag 8 is used for storing a gas sample;
the element cavity 2 is not communicated with the sampling cavity 4, an air suction pump 14 and a controller 15 are arranged in the element cavity 2, and an air path valve 11 is arranged between the element cavity 2 and the sampling cavity 4; the on-off valve 10 and the gas circuit valve 11 are both electrically connected to the controller 15, and the controller 15 controls the on-off state of the on-off valve 10 and the operating state of the gas circuit valve 11; the air inlet end of the air path valve 11 is communicated with only one sampling unit 5, the air inlet end of the air path valve 11 can be switched and communicated among the sampling units 5, the air outlet end of the air path valve 11 is communicated with the air inlet end of the air pump 14, and the air outlet end of the air pump 14 is communicated with the outside.
The sampling units 5 are columnar fan-shaped chambers, and a plurality of sampling units 5 are spliced to form a cylindrical sampling cavity 4; the gas path valve 11 is in a rotatable disc shape and is arranged below the sampling cavity 4 in a clinging manner; a vertical gas path hole 12 is formed in the disc surface of the gas path valve 11, and the gas path valve 11 rotates to drive the gas path hole 12 to be switched among the plurality of sampling units 5, so that the gas inlet end of the air pump 14 is switched among the plurality of sampling units 5; the design structure of the air path valve 11 is relatively simplified, so that the whole sampler 1 is relatively light.
The bottle wall of the sampler 1 is provided with an observation window 17 which surrounds a circle along the circumferential direction, so that the internal condition of the sampler 1 can be observed conveniently.
The gas collection device 13 is arranged in a containing cavity 22 above the gas inlet cavity 3, the gas collection device 13 comprises a connecting hose 16 and a sampling gun 18, the sampling gun 18 is formed by connecting a sampling gun head 20 and a telescopic sampling pipe body 21, and the sampling gun head 20 is provided with an annular clamping groove 24; a clamping plate 23 is arranged above the containing cavity 22, and a clamping groove opening is formed in the clamping plate 23; the sampling gun head 20 is clamped on the clamping plate 23 through the matching limit of the annular clamping groove 24 and the clamping groove opening.
The gas collection device 13 comprises a storage state and a taking-out state; when the gas sampling device 13 is in a storage state, the connecting hose 16 is positioned in the storage cavity 22, the sampling tube body 21 is contracted, and the sampling gun head 20 is clamped on the clamping groove opening, so that the gas sampling device 13 is suitable for collecting gas in places such as workshops and indoor places, and an operator does not need to hold the sampling gun head 20 by hand to collect the gas difficultly; when the gas sampling device 13 is in a taking-out state, the sampling gun head 20 is taken down from the notch, and the sampling tube body 21 is extended, so that an operator can conveniently collect gas in a designated area.
The sampling gun head 20 is clamped in the middle of the clamping plate 23, and a hemispherical flow homogenizing plate 26 is arranged above the clamping plate 23, so that when the device collects gas in indoor places and the like, the collected gas can be more uniform and stable, and the sampling effect is improved; a dust cover 27 covers the flow equalizing plate 26 to prevent dust and impurities from entering the device from the sampling gun head 20 when the sampler 1 is not in a working state.
A handle 28 is arranged above the sampler 1, and a pulley 29 is arranged at the bottom end of the sampler 1, so that the sampler is convenient to carry.
The utility model discloses a concrete working method as follows: in an initial state, the opening and closing valve 10 is fully opened, the gas path hole 12 is communicated with the ventilation cavity 6, the air pump 14 pumps gas, and the gas at the initial stage, the gas in each cavity of the sampler 1 and the gas in the vacuum sampling bag 8 which are collected by the gas sampling device 13 are all pumped by the air pump 14, so that the function of removing residual gas in the sampler 1 is achieved; then, the gas path valve 11 rotates, the gas path hole 12 is switched to be communicated with an air collection cavity 7, the opening and closing valve 10 corresponding to the air collection cavity 7 is still opened, the other opening and closing valves 10 are closed, the air suction pump 14 vacuumizes the air collection cavity 7, the vacuum sampling bag 8 collects sample gas, the opening and closing valve 10 corresponding to the vacuum sampling bag 8 is closed after collection is completed, and the gas path valve 11 rotates to perform sample collection work of the next vacuum sampling bag 8; if the collected sample is different from the sample collected last time, the opening and closing valve 10 corresponding to the vacuum sampling bag 8 which has collected the sample is closed, the rest opening and closing valves 10 are opened, the residual gas is removed again, and then the collection of the sample gas is continued; so come the utility model discloses can store different sample gas, and can not take place to mix between the sample gas and interfere the detection precision.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (6)
1. A portable individual air sampler characterized by: the sampler comprises a sampler (1) body, wherein an air inlet cavity (3), a sampling cavity (4) and an element cavity (2) are sequentially arranged in the sampler (1) from top to bottom; the sampling cavity (4) is internally divided into a plurality of sampling units (5), the sampling units (5) are not communicated with each other, and each sampling unit (5) comprises a ventilation cavity (6) and a plurality of air collecting cavities (7);
the upper end of the air inlet cavity (3) is connected with a gas collecting device (13), the lower end of the air inlet cavity (3) is communicated with the sampling units (5) through independent air inlet pipelines (9), and the air inlet pipelines (9) are provided with independent opening and closing valves (10); the lower end of the air inlet pipeline (9) corresponding to the air collection cavity (7) is connected with a vacuum sampling bag (8);
the element cavity (2) is not communicated with the sampling cavity (4), an air suction pump (14) and a controller (15) are arranged in the element cavity (2), and an air path valve (11) is arranged between the element cavity (2) and the sampling cavity (4); the open/close valve (10) and the gas path valve (11) are both electrically connected to the controller (15); the air inlet end of the air path valve (11) is communicated with only one sampling unit (5) at the same time, the air inlet end of the air path valve (11) can be switched and communicated among a plurality of sampling units (5), the air outlet end of the air path valve (11) is communicated with the air inlet end of the air extraction pump (14), and the air outlet end of the air extraction pump (14) is communicated with the outside.
2. A portable individual air sampler as claimed in claim 1 wherein: the sampling units (5) are columnar fan-shaped chambers, and the sampling units (5) are connected and spliced to form a columnar sampling cavity (4); the air path valve (11) is in a rotatable disc shape and is arranged below the sampling cavity (4) in a clinging manner; vertical gas circuit holes (12) are formed in the disc face of the gas circuit valve (11), and the gas circuit valve (11) rotates to drive the gas circuit holes (12) to be switched among the sampling units (5).
3. A portable individual air sampler as claimed in claim 2 wherein: the bottle wall of the sampler (1) is provided with an observation window (17) which surrounds a circle along the circumferential direction.
4. A portable individual air sampler as claimed in claim 1 wherein: the gas collection device (13) is arranged in a containing cavity (22) above the gas inlet cavity (3), the gas collection device (13) comprises a connecting hose (16) and a sampling gun (18), the sampling gun (18) is formed by connecting a sampling gun head (20) and a telescopic sampling pipe body (21), and an annular clamping groove (24) is formed in the sampling gun head (20); a clamping plate (23) is arranged above the containing cavity (22), and a clamping groove opening is formed in the clamping plate (23); the sampling gun head (20) is arranged on the clamping plate (23) in a clamping way through the matching and limiting of the annular clamping groove (24) and the clamping groove opening.
5. A portable individual air sampler as claimed in claim 4 wherein: the sampling gun head (20) is clamped in the middle of the clamping plate (23), a hemispherical flow homogenizing plate (26) is arranged above the clamping plate (23), and a dust cover (27) covers the flow homogenizing plate (26).
6. A portable individual air sampler as claimed in claim 1 wherein: a handle (28) is arranged above the sampler (1), and a pulley (29) is arranged at the bottom end of the sampler (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921877812.9U CN211205932U (en) | 2019-11-04 | 2019-11-04 | Portable individual air sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921877812.9U CN211205932U (en) | 2019-11-04 | 2019-11-04 | Portable individual air sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211205932U true CN211205932U (en) | 2020-08-07 |
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ID=71883481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921877812.9U Active CN211205932U (en) | 2019-11-04 | 2019-11-04 | Portable individual air sampler |
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| Country | Link |
|---|---|
| CN (1) | CN211205932U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112011445A (en) * | 2020-09-09 | 2020-12-01 | 苏州华达仪器设备有限公司 | Air-borne dust and bacteria sampler |
-
2019
- 2019-11-04 CN CN201921877812.9U patent/CN211205932U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112011445A (en) * | 2020-09-09 | 2020-12-01 | 苏州华达仪器设备有限公司 | Air-borne dust and bacteria sampler |
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