CN215065555U - Unpowered sampling device - Google Patents
Unpowered sampling device Download PDFInfo
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- CN215065555U CN215065555U CN202120123329.2U CN202120123329U CN215065555U CN 215065555 U CN215065555 U CN 215065555U CN 202120123329 U CN202120123329 U CN 202120123329U CN 215065555 U CN215065555 U CN 215065555U
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Abstract
The utility model relates to the field of machinary. An unpowered sampling device comprises a sampling frame, a mounting seat, a telescopic rod, a wind and rain cover and a dust screen; one end of the telescopic rod is hinged with the mounting seat and is relatively locked through a locking mechanism; the other end of the telescopic rod is detachably connected with the top of the wind and rain cover; the wind and rain cover comprises a dome and a lower opening cylinder, and the outer wall of the top of the lower opening cylinder is detachably connected with the inner side wall of the dome; the top center of lower open cylinder can be dismantled with the sampling frame and be connected, and the bottom of lower open cylinder can be dismantled with the dust screen and be connected. When the sample is collected, the sampling unit can effectively avoid the invasion of wind, rain and mosquitoes, and the effectiveness of the collected sample is ensured. The base can be fixed on various surfaces such as walls, trees, telegraph poles and the like. The telescopic arm can horizontally rotate to +/-90 degrees as required, and the extension in the horizontal direction is required, so that the sampling point position can be selected more easily, and the sufficient trapping space of the horizontal plane around the sampling port can be still ensured.
Description
Technical Field
The utility model relates to the technical field of machinery, specifically be sampling device.
Background
Air pollution is one of the most major environmental problems in the world today, and air pollutants can be classified into particulate and gaseous forms according to their morphology. Monitoring the concentration of pollutants in the air is of great significance to the treatment of air pollution and human health.
The conventional active sampling mode of gaseous pollutants relies on a gas pump to collect a large amount of gas in a short time, and target substances in the gas are captured on a filter membrane/absorption liquid/absorption tube for measurement. The active sampling mode needs a power supply, the time scale of monitoring coverage is very short, usually several hours or dozens of hours, and the monitoring operation needs personnel. Active sampling is not suitable for remote areas, monitoring under the conditions of no power supply and unattended operation, and is also not suitable for long-term trend monitoring with large time scale.
Passive sampling (unpowered sampling) refers to a sampling mode in which a sampling device or a gaseous trapping medium is exposed in an atmospheric environment, does not need air extraction power, and directly collects pollutants by virtue of the actions of natural diffusion, migration, sedimentation and the like of molecules of the pollutants to be detected in the atmosphere. The passive sampling device does not need a power supply, does not need to be attended after being properly placed, and can monitor the average condition in the time scale of medium and long term (week or month). Passive sampling techniques allow greater flexibility in the placement of sampling points and lower associated costs than active sampling.
The monitoring factor related to unpowered sampling in the environmental air monitoring is NOx、SO2The sulfation rate, etc. The specifications of the prior unpowered sampling devices of all the monitoring factors are different. However, the following disadvantages exist: 1) influence of rainwater splashing is not fully considered, 2) the selection requirement on sampling points is high, and 3) influence of mosquitoes such as moths cannot be prevented.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides an unpowered sampling device to solve above at least one technical problem.
The technical scheme of the utility model is that: an unpowered sampling device comprises a sampling frame, and is characterized by further comprising a mounting seat, a telescopic rod, a wind and rain cover and a dust screen;
one end of the telescopic rod is hinged with the mounting seat and is relatively locked through a locking mechanism;
the other end of the telescopic rod is detachably connected with the top of the wind and rain cover;
the weather hood comprises a dome and a lower opening cylinder, and the outer wall of the top of the lower opening cylinder is detachably connected with the inner side wall of the dome; the top center of lower open cylinder with the connection can be dismantled to the sampling frame, the bottom of lower open cylinder with the connection can be dismantled to the dust screen.
This patent is used for passive sampling method to carry out long time period's sample collection. When the sample is collected, the sampling unit can effectively avoid the invasion of wind, rain and mosquitoes, and the effectiveness of the collected sample is ensured.
The base can be fixed on various surfaces such as walls, trees, telegraph poles and the like. The telescopic arm can rotate horizontally +/-90 degrees as required, and meanwhile, the telescopic arm can extend horizontally as required, so that the sampling point position can be selected more easily, and the horizontal plane around the sampling port can still be ensured to have enough trapping space even if the telescopic arm is installed at an eave and a corner.
Further preferably, the top of the sampling rack is in threaded connection with the lower opening cylinder. The sampling frame is convenient to disassemble.
Further preferably, the locking mechanism comprises a screw and a wing nut, and the screw penetrates through the mounting seat and the telescopic rod to be in threaded connection with the wing nut.
The installation of the telescopic rod is convenient to realize.
Further preferably, the outer wall of the top of the lower opening cylinder is provided with an external thread, and the inner side wall of the dome is provided with an internal thread matched with the external thread of the lower opening cylinder.
The assembly of the lower opening cylinder with the dome is facilitated.
Further preferably, the bottom of the lower opening cylinder is provided with an internal thread;
and the periphery of the dustproof net is provided with an external thread in threaded connection with the bottom of the lower opening cylinder.
The assembly of the dust screen is convenient.
Further preferably, the top of the sampling frame is provided with an external thread in threaded connection with the lower opening cylinder.
The disassembly and assembly of the sampling frame are convenient to realize.
Further preferably, an extending column extending upwards is arranged at the top of the dome, and an external thread is arranged on the extending column;
the extending column penetrates through the end part of the telescopic rod and is locked through a butterfly nut.
The installation of dome and telescopic link is convenient.
Further preferably, the sampling rack is a sampling rack for mounting a filter membrane. Is conveniently applicable to NOx、SO2And sampling by adopting a small-aperture filter membrane method.
And the bottom of the sampling frame is provided with a pipe clamp for clamping the filter membrane.
Or the sampling frame is an alkali piece sampling frame. For sampling the sulfation rate.
The sampling frame comprises an upright post, a supporting plate and a pressing ring, and external threads are arranged at the top of the upright post;
the stand with the upside of backup pad links to each other, the bottom of backup pad is equipped with the collar, the collar with clamping ring threaded connection, just the clamping ring is used for pushing down the outward flange of alkali piece, the alkali piece centre gripping in the backup pad with between the clamping ring.
The alkali piece is convenient to install and fix.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a mounting base according to embodiment 1 of the present invention;
fig. 3 is a schematic structural view of a telescopic rod according to embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a weather hood according to embodiment 1 of the present invention;
fig. 5 is a schematic structural view of a dust screen according to embodiment 2 of the present invention;
fig. 6 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 7 is a bottom view of the sampling rack according to embodiment 2 of the present invention.
In the figure: 1 is the mounting hole, 2 is the round hole, 3 is the telescopic link, 4 is the mount pad connecting portion, 5 is the weather hood connecting portion, 6 is the dome, 7 is the under shed drum, 8 is dome top screw thread, 9 is the junction, 10 is the sampling frame mounting hole, 11 is the internal thread, 12 is the dust screen, 13 is the sampling frame, 131 is the backup pad, 132 is the clamping ring.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 5, in embodiment 1, an unpowered sampling device includes a sampling frame 13, a mounting seat, a telescopic rod 3, a wind and rain cover, and a dust screen. The mounting seat is provided with a mounting hole 1 for mounting. The mounting seat is provided with a round hole 2 for hinging the telescopic rod 3. One end of the telescopic rod 3 is hinged with the mounting seat and is relatively locked by a locking mechanism; the other end of the telescopic rod 3 is detachably connected with the top of the wind and rain cover. One end of the telescopic rod 3 is provided with two ear parts which are arranged in parallel and are used as a mounting seat connecting part 4 for hinging the mounting seat. The other end of the telescopic rod 3 is provided with an extension part which is a wind and rain cover connecting part 5 for installing a wind and rain cover.
The weather hood comprises a dome 6 and a lower opening cylinder 7, wherein the outer wall of the top of the lower opening cylinder 7 is detachably connected with the inner side wall of the dome 6; the top center of the lower opening cylinder 7 is detachably connected with the sampling frame 13, and the bottom of the lower opening cylinder 7 is detachably connected with the dust screen. This patent is used for passive sampling method to carry out long time period's sample collection. When the sample is collected, the sampling unit can effectively avoid the invasion of wind, rain and mosquitoes, and the effectiveness of the collected sample is ensured. The base can be fixed on various surfaces such as walls, trees, telegraph poles and the like. The telescopic arm can rotate horizontally +/-90 degrees as required, and meanwhile, the telescopic arm can extend horizontally as required, so that the sampling point position can be selected more easily, and the horizontal plane around the sampling port can still be ensured to have enough trapping space even if the telescopic arm is installed at an eave and a corner. The outer edge of the dome 6 is lower than the top of the lower open cylinder 7.
The telescopic rod is a commercial product. Therefore, the structure of the device is not described in detail in this patent.
The lowest position of the sampling frame is higher than the bottom of the lower opening cylinder. And the height difference is more than 8 cm.
The top of the sampling frame 13 is in threaded connection with the lower opening cylinder 7. Facilitating the disassembly of the sampling stand 13.
The locking mechanism comprises a screw rod and a butterfly nut, and the screw rod penetrates through the mounting seat and the telescopic rod 3 to be in threaded connection with the butterfly nut. The installation of the telescopic rod 3 is convenient to realize.
The junction 9 of the top outer wall of the lower open cylinder 7 and the inner side wall of the dome 6 is a threaded junction. The top outer wall of lower open cylinder 7 is equipped with the external screw thread, and the inside wall of dome 6 is equipped with the internal thread with the external screw thread assorted of lower open cylinder 7. Facilitating assembly of the lower open cylinder 7 with the dome 6. Or the top outer wall of the lower opening cylinder 7 and the inner side wall of the dome 6 are clamped with the clamping groove through mutually matched buckles.
The bottom of the lower opening cylinder 7 is provided with an internal thread 11; the periphery of the dustproof net 12 is provided with an external thread which is in threaded connection with the bottom of the lower opening cylinder 7. Facilitating assembly of the dust screen 12.
The top of the sampling frame 13 is provided with an external thread which is in threaded connection with the lower opening cylinder 7. The disassembly and assembly of the sampling frame 13 are convenient. The center of the lower opening cylinder is provided with a sampling frame mounting hole 10. The top of the sampling frame 13 is in threaded connection with the sampling frame mounting hole.
The top of the dome 6 is provided with an extending column extending upwards, and the extending column is provided with an external thread (namely a dome top thread 8); the end part of the extension column penetrating through the telescopic rod 3 is locked by a butterfly nut. The dome 6 and the telescopic rod 3 are convenient to install.
The sampling rack 13 is a sampling rack 13 for mounting a filter. Is conveniently applicable to NOx、SO2And sampling by adopting a small-aperture filter membrane method. The bottom of the sampling frame 13 is provided with a pipe clamp for clamping the filter membrane.
During sampling, firstly, a filter membrane (a commercially available product) meeting specific sampling requirements is installed on the sampling frame 13, the sampling frame 13 is provided with a weather hood, a dust screen is installed, and sampling at specific time is carried out according to the requirements.
The initial length of the telescopic arm is 0.3 m. The longest is extendable to 1.5 m.
The inner diameter of a lower opening cylinder of the wind-rain cover can be 9cm, and the inner diameter of the pipe clamp is 1 cm.
Referring to fig. 6, fig. 7 and embodiment 2, the difference between embodiment 1 and embodiment 2 is that the sampling rack 13 is an alkaline plate sampling rack 13. For sampling the sulfation rate. The sampling frame 13 comprises a column, a support plate 131 and a press ring 132, and the top of the column is provided with an external thread; the stand links to each other with the upside of backup pad 131, and the bottom of backup pad is equipped with the collar, collar and clamping ring 132 threaded connection, and the clamping ring is used for pushing down the outward flange of alkali piece, and the alkali piece centre gripping is between backup pad and clamping ring. The alkali piece is convenient to install and fix.
When sampling, firstly, the alkali piece (a commercial product) is installed on the sampling frame 13, the sampling frame 13 is provided with a weather hood, a dust screen is installed, and sampling at a specific time is carried out according to requirements.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An unpowered sampling device comprises a sampling frame, and is characterized by further comprising a mounting seat, a telescopic rod, a wind and rain cover and a dust screen;
one end of the telescopic rod is hinged with the mounting seat and is relatively locked through a locking mechanism;
the other end of the telescopic rod is detachably connected with the top of the wind and rain cover;
the weather hood comprises a dome and a lower opening cylinder, and the outer wall of the top of the lower opening cylinder is detachably connected with the inner side wall of the dome; the top center of lower open cylinder with the connection can be dismantled to the sampling frame, the bottom of lower open cylinder with the connection can be dismantled to the dust screen.
2. An unpowered sampling device according to claim 1, wherein: the top of the sampling frame is in threaded connection with the lower opening cylinder.
3. An unpowered sampling device according to claim 1, wherein: the locking mechanism comprises a screw and a butterfly nut, and the screw penetrates through the mounting seat and the telescopic rod to be in threaded connection with the butterfly nut.
4. An unpowered sampling device according to claim 1, wherein: the outer wall of the top of the lower opening cylinder is provided with an external thread, and the inner side wall of the dome is provided with an internal thread matched with the external thread of the lower opening cylinder.
5. An unpowered sampling device according to claim 1, wherein: the bottom of the lower opening cylinder is provided with an internal thread;
and the periphery of the dustproof net is provided with an external thread in threaded connection with the bottom of the lower opening cylinder.
6. An unpowered sampling device according to claim 1, wherein: and the top of the sampling frame is provided with an external thread in threaded connection with the lower opening cylinder.
7. An unpowered sampling device according to claim 1, wherein: an extending column extending upwards is arranged at the top of the dome, and external threads are arranged on the extending column;
the extending column penetrates through the end part of the telescopic rod and is locked through a butterfly nut.
8. An unpowered sampling device according to claim 1, wherein: the sampling frame is used for installing a filter membrane;
and the bottom of the sampling frame is provided with a pipe clamp for clamping the filter membrane.
9. An unpowered sampling device according to claim 1, wherein: the sampling frame is an alkali piece sampling frame.
10. An unpowered sampling device according to claim 9, wherein: the sampling frame comprises an upright post, a supporting plate and a pressing ring, and external threads are arranged at the top of the upright post;
the stand with the upside of backup pad links to each other, the bottom of backup pad is equipped with the collar, the collar with clamping ring threaded connection, just the clamping ring is used for pushing down the outward flange of alkali piece, the alkali piece centre gripping in the backup pad with between the clamping ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120123329.2U CN215065555U (en) | 2021-01-18 | 2021-01-18 | Unpowered sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120123329.2U CN215065555U (en) | 2021-01-18 | 2021-01-18 | Unpowered sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215065555U true CN215065555U (en) | 2021-12-07 |
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ID=79249356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120123329.2U Active CN215065555U (en) | 2021-01-18 | 2021-01-18 | Unpowered sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215065555U (en) |
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2021
- 2021-01-18 CN CN202120123329.2U patent/CN215065555U/en active Active
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