A dual-channel constant-current water separation sampler

Abstract

The present invention relates to the field of environmental detection technology, specifically to a dual-path constant-current water-dividing sampler, comprising a support frame, a sampler body is arranged on the top of the support frame, a first connecting frame is arranged on the sampler body, a first sampling assembly, a first water-dividing bottle, a second sampling assembly and a second water-dividing bottle are arranged on the first connecting frame, and the structure of the second sampling assembly is the same as that of the first sampling assembly. The beneficial effects of the present invention are: when the speed at which the gas enters the solution is relatively fast, the mixing effect of the impeller on the bubbles and the solution is improved, thereby improving the efficiency of harmful substances such as formaldehyde in the bubbles being absorbed by the solution, and when the speed at which the gas enters the solution is relatively slow, the solution below the partition and the solution above the partition form a circulation, thereby improving the uniformity of the mixing of the solution and the bubbles, and at the same time, avoiding the splashing water droplets generated when the bubbles burst may enter the sampler body along with the airflow, thereby affecting the operation of the sampler body.

Description

Technical Field

[0001] The invention relates to the technical field of environmental detection, and in particular to a dual-path constant-current water splitting sampler. Background Art

[0002] Indoor air quality testing is a technical process of analyzing and testing the excessive indoor air pollutants caused by indoor decoration and furniture purchase. A test report is issued based on the test results. When conducting indoor air quality testing, it is often necessary to complete the sampling of air samples through a sampling device, and then use special testing equipment to detect the content of harmful substances such as formaldehyde and benzene in the air.

[0003] The sampling device usually samples toxic and harmful substances in the air after indoor decoration. Formaldehyde can be dissolved in water, and its carrier is the formaldehyde phenolphthalein reagent (liquid) in the sampling bottle. When the sampler is working, the indoor air is drawn into the detection carrier. After the sampling is completed, the air sample carrier is tested and analyzed to obtain data.

[0004] An intelligent dual-path constant-current atmospheric sampler disclosed in Chinese patent CN216160257U includes a shell, a partition is welded inside the shell, an inner liner is fixedly installed on the top of the partition, a constant temperature component is arranged inside the inner liner, and a base is installed at the bottom of the inner cavity of the inner liner and the top of the partition.

[0005] However, compared with the existing technology and the comparative solution, it can be seen that the sampler still has the following problems in actual use:

[0006] When the air sampling device in the prior art is in use, air directly enters the sampling bottle through the air inlet pipe, the bubbles generated are relatively large, the contact area with the formaldehyde phenolphthalein reagent in the sampling bottle is small, and the mixing uniformity is poor, so that the formaldehyde in the air is not completely absorbed by the formaldehyde phenolphthalein reagent in the sampling bottle, resulting in the accuracy of the post-collection detection may be affected. At the same time, since the bubbles in the sampling bottle are relatively large, the splashing water droplets generated when the bubbles burst may enter the sampler along with the airflow, affecting the operation of the sampler. Summary of the invention

[0007] The present invention provides a dual-path constant-current water separation sampler to solve the above-mentioned technical problems.

[0008] A dual-channel constant-current water-dividing sampler of the present invention adopts the following technical scheme: comprising a support frame, a sampler body is arranged on the top of the support frame, a first connecting frame is arranged on the sampler body, a first sampling assembly, a first water-dividing bottle, a second sampling assembly and a second water-dividing bottle are arranged on the first connecting frame, and the structure of the second sampling assembly is the same as that of the first sampling assembly;

[0009] The first sampling assembly includes a sampling bottle, a circulation assembly is arranged inside the sampling bottle, a mixing assembly is arranged at the bottom inside the sampling bottle, a first air inlet pipe is arranged at the bottom of the sampling bottle, and the first air inlet pipe is connected to the mixing assembly;

[0010] The circulation component comprises a separator, a slider is arranged on the separator, an inverted cone is arranged at the bottom of the separator, an annular groove is arranged at the bottom of the separator, and a first channel and a second channel are arranged on the separator;

[0011] The mixing assembly comprises a fifth connecting pipe, a limiting ring is arranged on the fifth connecting pipe, an opening is opened on the fifth connecting pipe, a second connecting frame is arranged on the top of the fifth connecting pipe, and the second connecting frame is rotatably connected to an impeller.

[0012] Furthermore, a first connecting tube is arranged between the first sampling assembly and the first water distribution bottle, a second connecting tube is arranged between the first water distribution bottle and the sampler body, a third connecting tube is arranged between the second sampling assembly and the second water distribution bottle, and a fourth connecting tube is arranged between the second water distribution bottle and the sampler body.

[0013] Furthermore, a second air inlet pipe and a second air outlet pipe are provided on the first water distribution bottle. The structure of the second water distribution bottle is the same as that of the first water distribution bottle. The second air outlet pipe is connected to the sampler body through a second connecting pipe.

[0014] Furthermore, a first air outlet pipe is arranged on the top of the sampling bottle, the first air outlet pipe is connected to the second air inlet pipe through a first connecting pipe, a slide groove is arranged at the bottom inside the sampling bottle, a connecting cover is arranged at the bottom of the sampling bottle, and a connecting hole is arranged on the connecting cover.

[0015] Furthermore, the sampling bottle is plugged into the first connecting frame.

[0016] Furthermore, the slider is slidably connected inside the slide groove.

[0017] Furthermore, the first channel is in the shape of a cone that is small at the top and large at the bottom, and the second channel is in the shape of a funnel that is large at the top and small at the bottom. The second channel runs through the partition and the inverted cone.

[0018] Furthermore, there are multiple first channels, which are distributed in a circular array in the annular groove, and the second channel is arranged in the middle of the separator.

[0019] Furthermore, the fifth connecting pipe is inserted into the connecting hole, and one end of the first air intake pipe is connected to the fifth connecting pipe.

[0020] Further, the number of impellers is the same as the number of first channels, the positions of the impellers are staggered with the positions of the first channels, the number of openings is the same as the number of impellers, and the positions of the openings correspond to the positions of the impellers.

[0021] The beneficial effects of the present invention are: when the speed at which the gas enters the solution is relatively fast, the mixing effect of the impeller on the bubbles and the solution is improved, thereby improving the efficiency of the solution absorbing harmful substances such as formaldehyde in the bubbles; when the speed at which the gas enters the solution is relatively slow, the solution below the partition and the solution above the partition form a circulation, thereby improving the uniformity of the mixing of the solution and the bubbles, and at the same time, preventing the splashing water droplets generated when the bubbles burst from entering the sampler body along with the airflow and affecting the operation of the sampler body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a structural schematic diagram of a first viewing angle of an embodiment of the present invention;

[0024] Figure 2 It is a structural schematic diagram of a second viewing angle of an embodiment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the sampler body of an embodiment of the present invention;

[0026] Figure 4 It is a schematic cross-sectional structural diagram of a first water-distributing bottle according to an embodiment of the present invention;

[0027] Figure 5 It is a partial cross-sectional structural schematic diagram of the first sampling assembly of an embodiment of the present invention;

[0028] Figure 6 It is a schematic cross-sectional structural diagram of a first sampling assembly according to an embodiment of the present invention;

[0029] Figure 7 for Figure 6 A is an enlarged schematic diagram of the structure in the first state;

[0030] Figure 8 for Figure 6 A schematic diagram of the structure in the second state is enlarged;

[0031] Fig. 9 It is a schematic cross-sectional view of a sampling bottle according to an embodiment of the present invention;

[0032] Fig.10 for Fig. 9 A schematic diagram of the structure enlarged at B in the middle;

[0033] Fig.11It is a structural schematic diagram of a circulation component of an embodiment of the present invention from a first perspective;

[0034] Fig.12 It is a structural schematic diagram of a second viewing angle of a circulation component of an embodiment of the present invention;

[0035] Fig.13 It is a schematic cross-sectional structural diagram of a circulation assembly according to an embodiment of the present invention from a third viewing angle;

[0036] Fig.14 It is a cross-sectional structural schematic diagram of a circulation component of an embodiment of the present invention;

[0037] Fig.15 Schematic diagram of the structure of a mixing assembly according to an embodiment of the present invention.

[0038] In the figure: 1, support frame; 2, sampler body; 3, first connecting frame; 4, first sampling assembly; 41, sampling bottle; 411, first air outlet pipe; 412, slide groove; 413, connecting cover; 414, connecting hole; 42, circulation assembly; 421, partition; 422, slider; 423, inverted cone; 424, annular groove; 425, first channel; 426, second channel; 43, mixing assembly; 431, fifth connecting pipe; 432, limiting ring; 433, opening; 434, second connecting frame; 435, impeller; 44, first air inlet pipe; 5, first water distribution bottle; 501, second air inlet pipe; 502, second air outlet pipe; 6, second sampling assembly; 7, second water distribution bottle; 8, first connecting pipe; 9, second connecting pipe; 10, third connecting pipe; 11, fourth connecting pipe. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] An embodiment of a dual-path constant-current water splitting sampler of the present invention is as follows: Figures 1 to 3As shown, it includes a support frame 1, a sampler body 2 is arranged on the top of the support frame 1, a first connecting frame 3 is arranged on the sampler body 2, a first sampling component 4, a first water distribution bottle 5, a second sampling component 6 and a second water distribution bottle 7 are arranged on the first connecting frame 3, the structure of the second sampling component 6 is the same as that of the first sampling component 4, a first connecting tube 8 is arranged between the first sampling component 4 and the first water distribution bottle 5, a second connecting tube 9 is arranged between the first water distribution bottle 5 and the sampler body 2, a third connecting tube 10 is arranged between the second sampling component 6 and the second water distribution bottle 7, and a fourth connecting tube 11 is arranged between the second water distribution bottle 7 and the sampler body 2;

[0041] like Figure 3 to Figure 4 As shown, the first water distribution bottle 5 is provided with a second air inlet pipe 501 and a second air outlet pipe 502. The structure of the second water distribution bottle 7 is the same as that of the first water distribution bottle 5. The second air outlet pipe 502 is connected to the sampler body 2 through a second connecting pipe 9.

[0042] like Figure 3 , Figures 5 to 8 As shown, the first sampling assembly 4 includes a sampling bottle 41, a circulation assembly 42, a mixing assembly 43 and a first air inlet pipe 44. The sampling bottle 41 is plugged into the first connecting frame 3. The circulation assembly 42 is arranged inside the sampling bottle 41. The mixing assembly 43 is arranged at the bottom of the sampling bottle 41. The first air inlet pipe 44 is arranged at the bottom of the sampling bottle 41, and the first air inlet pipe 44 is connected to the mixing assembly 43.

[0043] like Figure 3 , Fig. 9 , Fig.10 As shown, a first air outlet pipe 411 is provided at the top of the sampling bottle 41, and the first air outlet pipe 411 is connected to the second air inlet pipe 501 through the first connecting pipe 8. A slide groove 412 is provided at the bottom of the sampling bottle 41, and a connecting cover 413 is provided at the bottom of the sampling bottle 41, and a connecting hole 414 is provided on the connecting cover 413;

[0044] like Figures 7 to 14 As shown, the circulation component 42 includes a separator 421, a slider 422, an inverted cone 423, an annular groove 424, a first channel 425 and a second channel 426. The separator 421 is provided with a slider 422, which is slidably connected to the inside of the slide groove 412. The bottom of the separator 421 is provided with an inverted cone 423, and the bottom of the separator 421 is provided with an annular groove 424. The separator 421 is provided with a first channel 425 and a second channel 426. The first channel 425 is a cone with a small top and a large bottom, and the second channel 426 is a funnel shape with a large top and a small bottom, and the second channel 426 runs through the separator 421 and the inverted cone 423. There are multiple first channels 425, which are distributed in a circular array in the annular groove 424, and the second channel 426 is provided in the middle of the separator 421.

[0045] like Figure 7 , Figure 8 , Fig.14 , Fig.15 As shown, the mixing assembly 43 includes a fifth connecting pipe 431, a limiting ring 432, an opening 433, a second connecting frame 434 and an impeller 435. The fifth connecting pipe 431 is inserted into the connecting hole 414, one end of the first air inlet pipe 44 is connected to the fifth connecting pipe 431, a limiting ring 432 is provided on the fifth connecting pipe 431, an opening 433 is opened on the fifth connecting pipe 431, a second connecting frame 434 is provided on the top of the fifth connecting pipe 431, and the second connecting frame 434 is rotatably connected to the impeller 435, the number of impellers 435 is the same as the number of the first channels 425, the positions of the impellers 435 are staggered with the positions of the first channels 425, the number of openings 433 is the same as the number of impellers 435, and the positions of the openings 433 correspond to the positions of the impellers 435.

[0046] The working process is as follows:

[0047] S1. When in use, the absorption solution is added to the sampling bottle 41. Since the buoyancy of the partition 421 is greater than the gravity of the partition 421 itself, the slider 422 slides in the slide groove 412, so that the partition 421 moves upward, and the solution is continuously added so that the solution level is flush with the top of the circulation component 42.

[0048] S2, start the sampler body 2, the sampler body 2 is evacuated, the outside air enters the fifth connecting pipe 431 through the first air inlet pipe 44, and enters the solution inside the sampling bottle 41 from the opening 433 on the fifth connecting pipe 431. Since the position of the opening 433 corresponds to the position of the impeller 435, the bubbles generated by the gas entering the solution at the opening 433 push the impeller 435 to rotate. As the impeller 435 rotates, the bubbles are broken up and the solution is stirred to mix with the bubbles.

[0049] S3. When the speed at which the gas enters the solution is fast, more gas enters the solution per unit time, so that the amount of bubbles generated in the solution is relatively large. Since the amount of bubbles generated in the solution is relatively large, the liquid level of the solution rises greatly, so that the partition 421 is in a mixture of the solution and the bubbles. Since the partition 421 is in the mixture of the solution and the bubbles, and the density of the mixture of the solution and the bubbles is less than the density of the solution, the buoyancy of the partition 421 becomes smaller, and the gravity of the partition 421 itself is greater than the buoyancy of the partition 421, so that the partition 421 moves downward;

[0050] S4. As the partition 421 moves, the space below the partition 421 becomes smaller. During the process of the bubbles formed at the opening 433 rising and colliding with the partition 421 and moving toward the first channel 425, the bubbles are more affected by the rotating impeller 435, thereby improving the mixing effect of the impeller 435 on the bubbles and the solution, and further improving the efficiency of the harmful substances such as formaldehyde in the bubbles being absorbed by the solution;

[0051] S5. When the speed at which the gas enters the solution is slow, the gas entering the solution per unit time is small, so that the amount of bubbles generated in the solution is relatively small. Since the amount of bubbles generated in the solution is relatively small, the liquid level of the solution rises at a small amplitude, and the liquid level of the solution does not exceed the partition 421. As the bubbles rise, since the bottom of the partition 421 is provided with an inverted cone 423, the bubbles move along the inverted cone 423 to the annular groove 424. Since the position of the impeller 435 is staggered with the position of the first channel 425, the bubbles driven by the impeller 435 are prevented from passing directly through the first channel 425, and the time the bubbles stay in the solution is increased, thereby ensuring the mixing effect of the bubbles and the solution. The bubbles enter the first channel 425 from the annular groove 424, and then move upward along the first channel 425. The bubbles generated previously rise under the push of the subsequent bubbles.

[0052] S6. When the bubble bursts, the solution constituting the bubble film forms droplets, which flow downward under the action of gravity, and after reaching the partition 421, they fall below the partition 421 along the second channel 426, while the subsequent bubbles continue to carry part of the solution from the first channel 425 to the top of the partition 421, so that the solution below the partition 421 and the solution above the partition 421 form a circulation, thereby improving the uniformity of the mixing of the solution and the bubbles;

[0053] S7, as the bubbles rise, harmful substances such as formaldehyde in the bubbles are absorbed by the solution, and after the bubbles burst, the gas flows along the first gas outlet pipe 411, the first connecting pipe 8 and the second gas inlet pipe 501 into the first water distribution bottle 5, and as the gas flows, splashing water droplets generated when the bubbles mixed in the gas burst fall into the first water distribution bottle 5;

[0054] S8. The gas separated from the splashing water droplets enters the sampler body 2 through the second air outlet pipe 502 and the second connecting pipe 9 to prevent the splashing water droplets generated when the bubbles burst from entering the sampler body 2 along with the air flow and affecting the operation of the sampler body 2. After the sampling is completed, the content of harmful substances such as formaldehyde in the air can be obtained by detecting the solution that has absorbed harmful substances such as formaldehyde.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual-channel constant-current water sampler, characterized in that: It comprises a support frame, a sampler body is arranged on the top of the support frame, a first connecting frame is arranged on the sampler body, a first sampling assembly, a first water distribution bottle, a second sampling assembly and a second water distribution bottle are arranged on the first connecting frame, and the structure of the second sampling assembly is the same as that of the first sampling assembly; The first sampling assembly comprises a sampling bottle, a circulation assembly is arranged inside the sampling bottle, a mixing assembly is arranged at the bottom inside the sampling bottle, a first air inlet pipe is arranged at the bottom of the sampling bottle, and the first air inlet pipe is connected to the mixing assembly; The circulation assembly comprises a separator, a slider is arranged on the separator, an inverted cone is arranged at the bottom of the separator, an annular groove is arranged at the bottom of the separator, and a first channel and a second channel are arranged on the separator; The mixing assembly comprises a fifth connecting pipe, a limiting ring is arranged on the fifth connecting pipe, an opening is opened on the fifth connecting pipe, a second connecting frame is arranged on the top of the fifth connecting pipe, and the second connecting frame is rotatably connected to an impeller; The first channel is in the shape of a cone with a small top and a large bottom, the second channel is in the shape of a funnel with a large top and a small bottom, and the second channel runs through the partition and the inverted cone; The first channels are multiple in number and are distributed in a circumferential array in the annular groove, and the second channel is arranged in the middle of the separator; The number of the impellers is the same as the number of the first channels, the positions of the impellers are staggered with the positions of the first channels, the number of the openings is the same as the number of the impellers, and the positions of the openings correspond to the positions of the impellers.

2. A dual-channel constant-current water splitting sampler according to claim 1, characterized in that: A first connecting tube is provided between the first sampling assembly and the first water distribution bottle, a second connecting tube is provided between the first water distribution bottle and the sampler body, a third connecting tube is provided between the second sampling assembly and the second water distribution bottle, and a fourth connecting tube is provided between the second water distribution bottle and the sampler body.

3. A dual-channel constant-current water splitting sampler according to claim 2, characterized in that: The first water distribution bottle is provided with a second air inlet pipe and a second air outlet pipe. The structure of the second water distribution bottle is the same as that of the first water distribution bottle. The second air outlet pipe is connected to the sampler body through a second connecting pipe.

4. A dual-channel constant-current water splitting sampler according to claim 3, characterized in that: A first air outlet pipe is arranged on the top of the sampling bottle, and the first air outlet pipe is connected to the second air inlet pipe through the first connecting pipe. A slide groove is provided at the bottom of the sampling bottle, and a connecting cover is provided at the bottom of the sampling bottle, and a connecting hole is provided on the connecting cover.

5. A dual-channel constant-current water splitting sampler according to claim 1, characterized in that: The sampling bottle is plugged into the first connecting frame.

6. A dual-channel constant-current water splitting sampler according to claim 4, characterized in that: The sliding block is slidably connected inside the sliding groove.

7. A dual-channel constant-current water splitting sampler according to claim 4, characterized in that: The fifth connecting pipe is inserted into the connecting hole, and one end of the first air intake pipe is connected to the fifth connecting pipe.

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