CN217006511U - Portable fog water sampling device - Google Patents

Abstract

The utility model discloses a portable fog sampling device, belonging to the technical field of environmental detection; the device comprises a pipeline, wherein one end of the pipeline is provided with a variable speed fan, the other end of the pipeline is provided with a sampling plate, and a condensing device is arranged below the sampling plate; the lower end of the pipeline is provided with a water collecting hole which is positioned below the tail end of the sampling plate; a collecting device is arranged below the water collecting hole and comprises a filter membrane, a y-shaped drainage rod and a collecting bottle from top to bottom. The sampling device disclosed by the utility model is small in volume, portable in use, capable of being carried to different places for sample collection, capable of overcoming most of terrain limitation, and capable of selecting different fan gears for sampling according to actual conditions. The water sample is filtered by using the filter membrane, and the collected water sample can be directly subjected to a normal trace element or H, O isotope test without additional sample treatment, so that the later work of a laboratory is reduced; the water sample drainage after y shape drainage stick will filter is prevented that the water sample from being siphoned away by the hose in to the receiving flask.

Description

Portable fog water sampling device

Technical Field

The utility model belongs to the technical field of environment detection, and particularly relates to a portable fog water sampling device.

Background

Fog is a weather phenomenon consisting of tiny water droplets or ice crystals suspended in near-ground air, a product of the condensation (or desublimation) of water vapor in the near-ground layer air. In the prior art, the water mist collected for H, O isotope test analysis is the water drops naturally condensed on the collecting blade, so that the limitation is large, and the problem of water sample pollution possibly exists, thereby causing large test errors. And the fog water is difficult to collect due to the uncertainty of the fog forming time and the complexity of the terrain, and a mobile fog water collecting device is not available in China.

In order to solve the above problems, chinese patent CN204202921U discloses a device for rapidly collecting mist, which is provided with a mist reaction vessel, wherein a funnel-shaped water collection vessel and a water collection bottle connected with the water collection vessel are arranged at the lower part of the mist reaction vessel, and the mist reaction vessel comprises at least two annular hollow condensation pipes arranged along the vertical direction and at least one vertical hollow condensation pipe communicated with the annular hollow condensation pipes. This patent uses a condenser tube to rapidly condense air, but the design of the condenser tube of the device is complex. For another example, chinese patent document CN214010837U discloses a fully automatic fog sampler which is easy to install. Including variable speed fan, stationary fluid case, filter screen, fixing device and wind channel, wherein, wind channel one end sets up variable speed fan, sets up the network camera on the wind channel of variable speed fan upside, sets up visibility sensor on the network camera, and the wind channel other end sets up the filter screen, and the filter screen downside sets up the water catch bowl, and the wind channel upside sets up integrated control terminal, and variable speed fan, network camera and visibility sensor all are connected to integrated control terminal, and the wind channel downside sets up fixing device. The device can automatically collect fog samples of the whole fog event, is suitable for long-time data monitoring, but can only carry out long-time monitoring in a small range, the sample time does not have identity, and no filtering device is arranged, the collected fog is not suitable for direct H, O isotope test, and the samples which are not processed for a long time in the field can cause pollution. In view of the above, it is desirable to provide a portable, fast, and collection and filtration device for sampling H, O isotopes.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model aims to provide a portable fog sampling device which can be used for convenient and pollution-free sampling in the field, has no special terrain limitation, is provided with a filtering and collecting device and provides great convenience for subsequent testing work.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a portable fog sampling device comprises a pipeline, wherein one end of the pipeline is provided with a variable speed fan, the other end of the pipeline is provided with a sampling plate, and a condensing device is arranged below the sampling plate; the lower end of the pipeline is provided with a water collecting hole, and the water collecting hole is positioned below the tail end of the sampling plate; and a collecting device is connected below the water collecting hole and comprises a filter membrane, a y-shaped drainage rod and a collecting bottle from top to bottom.

The condensing device rapidly reduces the temperature of the sampling plate, and the fog is rapidly condensed on the sampling plate and then flows into the water collecting hole along the sampling plate; and the fog in the water collecting holes is filtered by a filter membrane and then is drained to a collecting bottle by a y-shaped drainage rod. The sampling device has the functions of filtering and collecting, and collected samples can be directly subjected to element testing without additional sample treatment, so that a large amount of later work is reduced.

Further, the sampling board is the high polishing to 10000 mesh corrosion resistant plate, sampling board fixed connection be in the upper end of pipeline, with the contained angle of pipeline is 15 ~ 20. The utility model uses 10000-mesh stainless steel plates as sampling plates to collect fog, which is superior to a reticular collecting plate in collecting area and efficiency.

Furthermore, the condensing device comprises a steel cylinder with built-in dry ice, and an air inlet needle is arranged above the steel cylinder. The dry ice is gasified to absorb a large amount of heat, so that the temperature of the sampling plate is rapidly reduced, and the fog is condensed on the sampling plate; the utility model uses dry ice to condense fog, and compared with a condensing tube and an antifreeze, the utility model has the advantages of simple structure, convenient use and controllability.

Furthermore, the collecting device also comprises an air outlet positioned on the side of the y-shaped drainage rod, a hose is connected to the air outlet, and the other end of the hose is connected with an extraction device; the extraction device is arranged in the middle of the lower end of the pipeline. The mist in the water collecting hole is extracted by the extraction device through the hose, so that the mist smoothly flows into the collecting bottle after passing through the filter membrane.

Furthermore, the extraction device comprises an air suction port, front-end moisture absorption cotton, a drying agent, rear-end moisture absorption cotton and a second fan which are arranged in sequence, and the hose is connected with the air suction port.

Furthermore, filter screens are arranged at two ends of the front-end moisture absorption cotton and the rear-end moisture absorption cotton. The filter screen can be fixed to the absorbent cotton on the one hand, and on the other hand can also filter some impurity.

Furthermore, sampling device still includes shield and handle, the shield with the tip swing joint of pipeline, the handle with the downside fixed connection of pipeline. Furthermore, the handle is provided with four switches of 'off', '1 st gear', '2 nd gear' and 'filtering'.

Furthermore, the filter membrane is an acetic acid filter membrane, and the pore size is 0.22 μm or 0.45 μm.

Furthermore, the variable speed fan has two gears of power, and the air suction speed is 1m/s and 3m/s respectively.

The using method of the fog water sampling device comprises the following steps:

s1, after a sampling point is reached, opening a dustproof cover, and inserting a collecting device, a steel cylinder with built-in dry ice and a hose; if the field fog concentration is higher, the switch is pushed to the '1 st gear'; if the field fog concentration is low, the switch is pushed to the 2 gear; absorbing a large amount of heat when the dry ice is gasified to quickly reduce the temperature of the sampling plate, condensing the fog on the sampling plate, and then flowing into a water collecting tank along the sampling plate;

s2, pushing the switch to be 'filtered', starting a second fan to work, filtering the fog water sample from the water collecting tank through a filtering membrane, then draining the fog water sample into a collecting bottle through a y-shaped drainage rod, and pushing the switch to be 'off' after the collection is finished;

s3, after sampling is finished, pulling out the collecting bottle, covering the bottle cover, placing the collecting bottle into a plastic sealing bag, recording sampling information, pulling out a dry ice steel bottle, and finally cleaning the sampling plate and the water collecting tank by using deionized water; pushing the switch to filter for air pumping to prevent the pollution of the next sample, replacing the filter membrane during the next sampling to prevent the reverse pollution of impurities in the air, and finally closing the dust cover to the next sampling point;

and S4, collecting a plurality of samples, carrying the samples into a laboratory for classification and arrangement, compiling test numbers, then carrying out normal trace element or H, O isotope test, and analyzing results.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the sampling device is small in size and portable in use, can be carried to different places for sample collection, overcomes most of terrain limitation, and can select different fan gears for sampling according to actual conditions.

(2) The collecting device comprises the filter membrane, the y-shaped drainage rod and the collecting bottle, the filter membrane is used for filtering the water sample, the collected water sample can be directly subjected to normal trace element or H, O isotope test, extra sample treatment is not needed, and a large amount of later work is reduced; the y shape drainage stick is with the water sample drainage after filtering to the receiving flask in, can prevent simultaneously that the water sample from being siphoned away by the hose.

(3) The utility model uses 10000-mesh stainless steel plates as sampling plates to collect fog, which is superior to a reticular collecting plate in collecting area and efficiency.

(4) Compared with the use of a condensation pipe and antifreeze, the utility model uses dry ice to condense fog, and has simple structure, convenient use and controllability.

Drawings

FIG. 1 is a schematic structural view of a fog sampling device of the present invention;

FIG. 2 is a schematic view of the structure of the collecting device;

FIG. 3 is a schematic view of the structure of the extracting device;

FIG. 4 is a schematic bottom view of the handle;

FIG. 5 is a schematic view of a screen;

fig. 6 is a schematic structural view of a sampling plate.

In the figure: 1. a dust cover; 2. a pipeline; 3. a sampling plate; 4. an extraction device; 401. an air suction port; 402. a front end filter screen; 403. a rear end filter screen; 404. a second fan; 405. the rear end is made of moisture absorption cotton; 406. front end absorbent cotton; 407. a desiccant; 5. filtering with a screen; 6. a variable speed fan; 7. a water collection tank; 8. a collection device; 801. filtering the membrane; 802. a y-shaped drainage rod; 803. a collection bottle; 804. an air outlet; 9. a hose; 10. a steel cylinder; 11. an air inlet needle; 12. a switch; 13. a handle; 1301. a battery cover; 1302. a battery.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

As shown in fig. 1 to 2, the embodiment provides a portable fog sampling device, which includes a pipeline 2, a variable speed fan 6 is arranged at one end of the pipeline 2, a sampling plate 3 is arranged at the other end of the pipeline, and a condensing device is arranged below the sampling plate 3; the lower end of the pipeline 2 is provided with a water collecting hole which is positioned below the tail end of the sampling plate 3; the collecting device 8 is connected below the water collecting hole, and the collecting device 8 comprises a filter membrane 801, a y-shaped drainage rod 802 and a collecting bottle 803 from top to bottom. The filter membrane 801 is an acetic acid filter membrane, the aperture is 0.22 mu m, the y-shaped drainage rod 802 is made of plastic, and the volume of the collection bottle 803 is 3 mL; the collecting device 8 further comprises an air outlet 804 positioned on the side of the y-shaped drainage rod, a hose 9 is connected to the air outlet 804, and the other end of the hose 9 is connected with the extraction device 4; the extraction device 4 is arranged in the middle of the lower end of the pipeline 2; the mist in the water collecting holes is extracted by the extracting device 4 through the hose 9, and flows into the collecting bottle 803 after smoothly passing through the filter membrane 801. As shown in fig. 3, the drawing device 4 includes an air inlet 401, a front end absorbent cotton 406, a drying agent 407, a rear end absorbent cotton 405 and a second fan 404 arranged from left to right, and the hose 9 is connected to the air inlet 401; two ends of the front end absorbent cotton 406 are provided with front end filter screens 402, and two ends of the rear end absorbent cotton 405 are provided with rear end filter screens 403; the front end filter screen 402 and the rear end filter screen 403 can fix the absorbent cotton on one hand, and can also filter part of impurities on the other hand.

The sampling plate 3 of the embodiment is a stainless steel plate with the high polishing degree of 10000 meshes, the sampling plate 3 is fixedly connected to the upper left end of the pipeline 2, and the included angle between the sampling plate 3 and the pipeline 2 is 17 degrees; the 10000-mesh stainless steel plate is used as the sampling plate 3 for fog collection, and is superior to a net-shaped collection plate in collection area and efficiency. The condensing device comprises a steel cylinder 10 with built-in dry ice, the volume of the steel cylinder 10 is 50mL, and an air inlet needle 11 is arranged above the steel cylinder 10; the dry ice is gasified to absorb a large amount of heat, so that the temperature of the sampling plate 3 is rapidly reduced, and the fog is condensed on the sampling plate 3; the utility model uses dry ice to condense fog, and compared with a condensing tube and an antifreeze, the utility model has the advantages of simple structure, convenient use and controllability.

The sampling device of this embodiment still includes shield 1 and handle 13, and shield 1 passes through the bearing with the tip of pipeline 2 and is connected, handle 13 and the downside fixed connection of pipeline 2. The handle 13 is provided with four options of 'off', '1 gear', '2 gear' and 'filtering', the switch 12 is pushed to '1 gear', and the air suction speed of the variable speed fan 6 is 1 m/s; the switch 12 is pushed to the 2 gear, and the air suction speed of the variable speed fan 6 is 3 m/s; the switch 12 is pushed to 'filtration', the second fan 404 starts to work, the air suction rate of the second fan 404 is 0.2m/s, and the water sample in the water collecting tank 7 flows into the collecting bottle 803 through the filter membrane 801; the switch 12 is pushed "off" and the sampling device stops operating. As shown in fig. 4, two No. 7 batteries 1302 are arranged in the handle 13, and a battery cover 1301 covers the batteries 1302.

The front end of the variable speed fan 6 of this embodiment is provided with a filter screen 5, as shown in fig. 5, the filter screen 5 is composed of five concentric circles, the diameter of the outermost circle is 50mm, and a fixed steel plate is arranged at every 45 °. The pipeline 2, the sampling plate 3 and the handle 13 are all made of stainless steel, as shown in fig. 6, the sampling plate 3 is 2mm thick, and the tail end is triangular.

The using method of the fog water sampling device comprises the following steps:

s1, after a sampling point is reached, opening a dustproof cover 1, and inserting a collecting device 8, a steel cylinder 10 with built-in dry ice and a hose 9; if the field fog concentration is higher, the air suction speed of the variable speed fan 6 is adjusted to be 1 m/s; if the field fog concentration is low, adjusting the air suction speed of the variable speed fan 6 to be 3 m/s; the dry ice is gasified to absorb a large amount of heat to rapidly reduce the temperature of the sampling plate 3, and the fog water is condensed on the sampling plate 3 and then flows into the water collecting tank 7 along the sampling plate 3;

s2, pushing the switch 12 to be 'filtered', starting the second fan 404 to work, filtering the fog water sample from the water collecting tank 7 through the filtering membrane 801, then draining the fog water sample into the collecting bottle 803 through the y-shaped drainage rod 802, and pushing the switch 12 to be 'off' after about 2mL of the fog water sample is collected;

s3, after sampling is finished, pulling out the collecting bottle 803, covering the bottle cover, putting the collecting bottle into a plastic sealing bag, recording sampling information, pulling out the dry ice steel cylinder 10, and finally cleaning the sampling plate 3 and the water collecting tank 7 by using deionized water; pushing the switch 12 to the 'filtering' state for air pumping to prevent the next sample from being polluted, replacing the filter membrane 801 at the next sampling time to prevent the impurities in the air from being reversely polluted, and finally closing the dustproof cover 1 to the next sampling point;

and S4, after a plurality of samples are collected, the samples are taken into a laboratory for classification and arrangement, test numbers are compiled, then H, O isotope tests are carried out, and results are analyzed.

Example 2

The portable fog sampling device of the present embodiment is substantially the same as embodiment 1, except that the volume of the collection bottle 803 of the present embodiment is 50 mL; the suction air speed of the speed-changing fan 6 in 1 gear is 3m/s, and the suction air speed of the speed-changing fan in 2 gear is 6 m/s; the second fan 404 has an intake air rate of 0.5 m/s; the filter membrane 801 is an acetic acid filter membrane, and the aperture is 0.45 mu m; the fog water collected by the fog water sampling device is suitable for testing the normal trace elements.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. A portable fog sampling device is characterized by comprising a pipeline, wherein one end of the pipeline is provided with a variable speed fan, the other end of the pipeline is provided with a sampling plate, and a condensing device is arranged below the sampling plate; the lower end of the pipeline is provided with a water collecting hole, and the water collecting hole is positioned below the tail end of the sampling plate; and a collecting device is connected below the water collecting hole and comprises a filter membrane, a y-shaped drainage rod and a collecting bottle from top to bottom.

2. The portable fog sampling device of claim 1, wherein the sampling plate is a stainless steel plate with a high polished diameter of 10000 meshes, and the sampling plate is fixedly connected to the upper end of the pipeline and forms an included angle of 15-20 degrees with the pipeline.

3. The portable fog sampling device of claim 1, wherein the condensing device comprises a steel cylinder with dry ice inside, and an air inlet needle is arranged above the steel cylinder.

4. The portable fog sampling device of claim 1, wherein the collection device further comprises an air outlet located on a side of the y-shaped drainage rod, a hose is connected to the air outlet, and an extraction device is connected to the other end of the hose.

5. The portable fog sampling device of claim 4, wherein the pumping device comprises an air inlet, a front-end absorbent cotton, a drying agent, a rear-end absorbent cotton and a second fan, which are arranged in sequence, and the hose is connected with the air inlet.

6. The portable fog sampling device of claim 5, wherein both ends of the front end absorbent cotton and the rear end absorbent cotton are provided with filter screens.

7. The portable fog sampling device of claim 1, further comprising a dust cap and a handle, wherein the dust cap is movably connected to an end of the conduit, and the handle is fixedly connected to a lower side of the conduit.

8. The portable fog sampling device of claim 1, wherein the filter membrane is an acetate filter membrane having a pore size of 0.22 μm or 0.45 μm.

9. The portable fog sampling device of claim 1 wherein the variable speed fan has two power levels with respective air intake rates of 1m/s and 3 m/s.

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