An integrated sampling device for ambient air particulate matter

Abstract

The present application relates to the field of particulate matter sampling, and discloses a comprehensive sampling device for ambient air particulate matter, which comprises an information collector, a support fixedly installed at the bottom of the information collector, a storage box arranged at the side of the information collector, a tank storage block fixedly installed at the top of the storage box, a first sampling head connected to the top of the information collector, a second sampling head connected to the top of the first sampling head, a taking-out device arranged on the first sampling head and the second sampling head, and a sampling cover fixedly installed at the top of the second sampling head; the unused filter paper mounting piece is installed in the inside of the isolation piece through the placing piece, the filter paper mounting piece inside the second sampling head can be replaced when the second sampling head is blocked or the filter paper mounting piece is full, the problem that the collected particles may be shaken off when the filter paper mounting piece is taken out is reduced, the possible error in detection is reduced, and the convenience and accuracy of sample collection are improved.

Description

Technical Field

[0001] This invention relates to the field of particulate matter sampling technology, and more specifically, to a comprehensive sampling device for ambient air particulate matter. Background Technology

[0002] Environmental particulate sampling refers to the process of collecting suspended particulate matter of a specific size from the air using scientific methods. It provides physical samples for subsequent concentration analysis and composition studies. To accomplish this crucial step, integrated environmental particulate sampling devices have emerged. These devices can typically collect particulate matter of different sizes simultaneously (such as PM2.5 and PM10) and can integrate gas sampling functions. Through precise flow control and a staged cutting head, they achieve efficient and standardized collection of target particulate matter, making them a core foundational equipment for conducting atmospheric environmental research and pollution source apportionment.

[0003] A Total Suspended Particulate Matter (TSP) sampling head is a device used in environmental monitoring to collect total suspended particulate matter in the air. Its top is designed with a specially sized air intake cutter that utilizes the principle of inertial separation to allow particles with an aerodynamic equivalent diameter of less than 100 micrometers to enter the sampling head with the airflow. These particles are then effectively trapped by an internally supported filter membrane, thus completing the sample collection. This device is widely used for monitoring ambient air quality and workplace dust concentrations.

[0004] When using a dust sampling head, filter paper needs to be installed. This requires using tweezers to pick up the filter paper and then attach it to the dust sampling head. After the filter paper has finished sampling, it needs to be removed. During the removal process, the filter paper may shake outdoors, causing the dust and particulate matter collected on the filter paper to fall off. This can easily lead to errors during laboratory testing. Summary of the Invention

[0005] This invention provides a comprehensive sampling device for ambient air particulate matter, which solves the technical problem in related technologies where filter paper needs to be picked up with tweezers and then installed on a dust sampling head. After the filter paper has been sampled, it is then removed. However, during the removal process, the filter paper may shake outdoors, causing the dust and particulate matter collected on the filter paper to fall off, which can easily lead to errors during laboratory testing.

[0006] This invention provides a comprehensive sampling device for ambient air particulate matter, including an information collector. A support is fixedly installed at the bottom of the information collector, a storage box is provided on the side of the information collector, a tank storage block is fixedly installed on the top of the storage box, a first sampling head is connected to the top of the information collector, a second sampling head is connected to the top of the first sampling head, and both the first and second sampling heads are provided with a removal device. A sampling cover is fixedly installed on the top of the second sampling head. The removal device includes filter paper disposed inside the first and second sampling heads, and the removal device is used to replace and remove the filter paper.

[0007] The extraction device includes an isolating component, a sealing component, a filter paper mounting component, an extraction component, a placement component, a transmission component, and a moving component. The isolating component is fixedly installed on the second sampling head. The sealing component is fixedly installed inside the second sampling head. The filter paper mounting component is provided at the lower part of the sealing component. The transmission component is provided at the lower part of the filter paper mounting component. The extraction component and the placement component are provided on both sides of the isolating component. The extraction component is used to extract the filter paper mounting component. The placement component is used to place the filter paper mounting component inside the isolating component. The bottom of the isolating component, located below the placement component, is provided with a moving component. The moving component is used to adjust the movement of the filter paper mounting component inside the isolating component.

[0008] As a further optimization of the present invention, the isolation component includes an isolation plate fixedly installed outside the second sampling head, an isolation groove is provided inside the isolation plate, an isolation protrusion is fixedly installed on one side of the isolation plate, the isolation protrusion is used to place the placement component, and a removal component is provided on the side away from the isolation protrusion.

[0009] As a further optimization of the present invention, the sealing element includes a first fixing block fixedly installed inside the second sampling head, a second fixing post symmetrically arranged fixedly installed on the top of the first fixing block, a second connecting block slidably installed on the outside of the second fixing post, a first fixing plate fixedly installed on the top of the second fixing post, a first spring provided on the top of the second connecting block, a symmetrically arranged sealing plate fixedly installed on the lower part of the second connecting block, a first fixing post fixedly installed on the lower part of the sealing plate, a first connecting block fixedly installed on the bottom of the first fixing post, the first connecting block contacting the filter paper mounting component for sealing the filter paper mounting component, and a sealing protrusion provided on the first fixing block for placing the sealing plate.

[0010] As a further optimization of the present invention, the filter paper mounting component includes a filter paper placement plate that is slidably installed on the inner wall of the second sampling head, and a filter paper squeezing plate is provided at the lower part of the filter paper placement plate, and the filter paper placement plate and the filter paper squeezing plate are in frictional contact.

[0011] As a further optimization of the present invention, the extraction component includes an extraction plate that is slidably installed inside the isolation component, a first handle is fixedly installed on the top of the extraction plate, and a placement groove is provided inside the extraction plate.

[0012] As a further optimization of the present invention, the placement component includes a mounting plate that is slidably mounted on the isolation protrusion, and a second handle is fixedly mounted on the top of the mounting plate.

[0013] As a further optimization of the present invention, the transmission component includes transmission protrusions symmetrically arranged and fixedly installed on the inner wall of the second sampling head. A screw is fixedly installed on the top of the transmission protrusion, and the output end of the screw is connected to a first motor. A third fixing block is provided outside the first motor, and a transmission sealing ring is fixedly installed on the side of the third fixing block.

[0014] As a further optimization of the present invention, the moving component includes a second motor fixedly installed at the bottom of the isolation plate and located below the placement component. The end of the second motor is connected to a pressing moving strip, and the pressing moving strip rotates to drive the filter paper mounting component to move.

[0015] As a further optimization of the present invention, an air inlet plate is fixedly installed on the top of the second sampling head, the top of the air inlet plate is fixedly installed with the sampling cover, and air inlets are symmetrically arranged on the side of the air inlet plate.

[0016] As a further optimization of the present invention, the bottom of the filter paper mounting component is provided with an elastic material, which is rubber.

[0017] The beneficial effects of this invention are as follows:

[0018] The present invention discloses an ambient air particulate matter comprehensive sampling device. An unused filter paper mounting piece is installed inside an isolation component via a placement component. Then, a transmission component raises and lowers the device to replace any clogged or exhausted filter paper mounting pieces inside the second sampling head. A moving component moves the unused filter paper mounting piece into the second sampling head. A sealing component seals the space above and below the second sampling head to prevent air leakage during replacement. The transmission component then rises, bringing the filter paper mounting piece into contact with the upper sealing component, thus completing the replacement. Finally, a removal component collects and places the sampled filter paper mounting piece, reducing the possibility of collected particles being shaken off during removal, minimizing detection errors, and improving the convenience and accuracy of sample collection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall shape of the device of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall device installation of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the extraction device of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the extraction component of the present invention;

[0023] Figure 5 This is a schematic diagram of the installation structure of the extraction component of the present invention;

[0024] Figure 6 This is a schematic diagram of the internal structure of the sealing element of the present invention;

[0025] Figure 7 This is a schematic diagram of the internal structure of the transmission component of the present invention;

[0026] Figure 8 This is a schematic diagram of the internal structure of the isolation component of the present invention.

[0027] In the picture:

[0028] 1. Information collector; 11. Support; 12. Storage box; 13. Tank storage block; 14. First sampling head; 15. Second sampling head; 16. Sampling cover; 161. Air inlet plate; 162. Air inlet

[0029] 2. Removal device; 21. Isolating element; 211. Isolating plate; 212. Isolating groove; 213. Isolating protrusion; 22. Sealing element; 221. First fixing block; 222. First fixing post; 223. First connecting block; 224. Second fixing post; 225. First fixing plate; 226. Second connecting block; 227. First spring; 228. Sealing plate; 229. Sealing protrusion; 23. Filter paper mounting component; 231. Filter paper 232. Placement plate; 24. Filter paper squeezing plate; 25. Take-out component; 26. Take-out plate; 27. First handle; 28. Placement slot; 29. ​​Placement component; 20. Mounting plate; 21. Second handle; 22. Transmission component; 233. Transmission sealing ring; 24. Third fixing block; 25. Transmission protrusion; 26. Screw; 27. First motor; 28. Moving component; 29. ​​Second motor; 20. Squeezing moving strip. Detailed Implementation

[0030] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0031] like Figures 1 to 3 As shown in the figure, an ambient air particulate matter comprehensive sampling device according to an embodiment of the present invention includes an information collector 1. A bracket 11 is fixedly installed at the bottom of the information collector 1. A storage box 12 is provided on the side of the information collector 1. A tank storage block 13 is fixedly installed on the top of the storage box 12. A first sampling head 14 is connected to the top of the information collector 1. A second sampling head 15 is connected to the top of the first sampling head 14. Both the first sampling head 14 and the second sampling head 15 are provided with a removal device 2. A sampling cover 16 is fixedly installed on the top of the second sampling head 15. The removal device 2 includes filter paper disposed in the first sampling head 14 and the second sampling head 15. The removal device 2 is used to replace and remove the filter paper.

[0032] like Figures 4 to 8 As shown, the extraction device 2 includes an isolation member 21, a sealing member 22, a filter paper mounting member 23, an extraction member 24, a placement member 25, a transmission member 26, and a moving member 27. The isolation member 21 is fixedly installed on the second sampling head 15. The sealing member 22 is fixedly installed inside the second sampling head 15. The filter paper mounting member 23 is provided at the lower part of the sealing member 22. The transmission member 26 is provided at the lower part of the filter paper mounting member 23. The extraction member 24 and the placement member 25 are provided on both sides of the isolation member 21. The extraction member 24 is used to extract the filter paper mounting member 23. The placement member 25 is used to place the filter paper mounting member 23 inside the isolation member 21. The bottom of the isolation member 21, below the placement member 25, is provided with a moving member 27. The moving member 27 is used to adjust the movement of the filter paper mounting member 23 inside the isolation member 21.

[0033] It should be noted that, in the initial state, the seal 22 and the filter paper mounting part 23 remain as follows: Figure 4 and Figure 5As shown, the filter paper mounting component 23 is used to block the channel inside the isolation component 21, allowing the second sampling head 15 to communicate vertically without air leakage into the isolation component 21. When the filter paper mounting component 23 inside the second sampling head 15 needs to be removed or becomes blocked due to external environmental factors, the air pump inside the information collector 1 is turned off, and then the transmission component 26 is activated. The transmission component 26 moves the filter paper mounting component 23 towards the lower part of the second sampling head 15 until the filter paper mounting component 23 is parallel to the lower part of the groove inside the isolation component 21, at which point the transmission component 26 stops moving. The upper and lower parts of the sealing element 22 are also sealed, preventing air leakage. Then, the moving element 27 is activated, causing the filter paper mounting element 23 located inside the upper isolating element 21 of the moving element 27 to move. When the moving element 27 rotates, the filter paper mounting element 23 inside the top isolating element 21 of the moving element 27 moves closer to the extraction element 24, thereby squeezing the filter paper mounting element 23 inside the second sampling head 15 into the extraction element 24. This allows the sampled filter paper mounting element 23 to move into the extraction element 24, while a new filter paper mounting element 23 moves into the second sampling head 15. Internally, the filter paper mounting piece 23 is installed inside the isolation piece 21, thus completing the replacement. Then, the transmission component 26 is activated to rise, causing the filter paper mounting piece 23 at the top of the transmission component 26 to contact the sealing component 22, thereby releasing the seal of the sealing component 22. Afterwards, the air pump inside the information collector 1 is activated to draw air from the sampling cover 16 for re-collection. This device uses the placement component 25 to install the unused filter paper mounting piece 23 inside the isolation component 21. Then, by raising and lowering the transmission component 26, the filter paper mounting piece 23 that is blocked or has finished collecting can be replaced inside the second sampling head 15. The moving component 27 moves the unused filter paper mounting component 23 into the interior of the second sampling head 15. The space above and below the second sampling head 15 is sealed by the sealing component 22 to prevent air leakage during replacement. Then, the transmission component 26 rises, so that the filter paper mounting component 23 contacts the upper sealing component 22, thereby completing the replacement. Afterwards, the extraction component 24 collects and places the sampled filter paper mounting component 23, reducing the possibility of the collected particles being shaken off when the filter paper mounting component 23 is removed, reducing the possible errors in detection, and improving the convenience and accuracy of sample collection.

[0034] like Figure 4 and Figure 8 As shown, the isolation component 21 includes an isolation plate 211 fixedly installed outside the second sampling head 15. An isolation groove 212 is provided inside the isolation plate 211. An isolation protrusion 213 is fixedly installed on one side of the isolation plate 211. The isolation protrusion 213 is used to place the placement component 25. A removal component 24 is provided on the side away from the isolation protrusion 213.

[0035] It should be noted that the width of the isolation groove 212 allows the filter paper mounting component 23 to slide inside the isolation plate 211, while the isolation protrusion 213 allows the placement component 25 to seal the isolation plate 211. The removal component 24 is placed on the isolation plate 211 on the side away from the placement component 25, which can collect and place the collected filter paper mounting component 23.

[0036] like Figures 3 to 6 As shown, the sealing element 22 includes a first fixing block 221 fixedly installed inside the second sampling head 15. A second fixing post 224 symmetrically arranged is fixedly installed on the top of the first fixing block 221. A second connecting block 226 is slidably installed on the outside of the second fixing post 224. A first fixing plate 225 is fixedly installed on the top of the second fixing post 224. A first spring 227 is provided on the top of the second connecting block 226. A sealing plate 228 symmetrically arranged is fixedly installed on the lower part of the second connecting block 226. A first fixing post 222 is fixedly installed on the lower part of the sealing plate 228. A first connecting block 223 is fixedly installed on the bottom of the first fixing post 222. The first connecting block 223 contacts the filter paper mounting component 23 and is used to seal the filter paper mounting component 23. A sealing protrusion 229 is provided on the first fixing block 221. The sealing protrusion 229 is used to place the sealing plate 228.

[0037] It should be noted that when the filter paper mounting component 23 descends, under the action of the first spring 227, the second connecting block 226 causes the sealing plate 228 to engage with the groove on the first fixing block 221, thereby isolating the space above and below the first fixing block 221 inside the second sampling head 15, facilitating the replacement of the filter paper mounting component 23 and preventing air leakage during replacement.

[0038] like Figure 6 As shown, the filter paper mounting component 23 includes a filter paper placement plate 231 that is slidably installed on the inner wall of the second sampling head 15. A filter paper squeezing plate 232 is provided at the lower part of the filter paper placement plate 231, and the filter paper placement plate 231 and the filter paper squeezing plate 232 are in frictional contact.

[0039] It should be noted that the filter paper mounting component 23 includes a filter paper placement plate 231 that is slidably installed on the inner wall of the second sampling head 15. A filter paper squeezing plate 232 is provided at the lower part of the filter paper placement plate 231. The filter paper placement plate 231 and the filter paper squeezing plate 232 are in frictional contact. Filter paper is placed between the filter paper placement plate 231 and the filter paper squeezing plate 232, which can clamp the filter paper, thereby facilitating the sampling of air and the replacement of filter paper.

[0040] like Figures 2 to 4As shown, the extraction component 24 includes an extraction plate 241 that is slidably installed inside the isolation component 21. A first handle 242 is fixedly installed on the top of the extraction plate 241, and a placement groove 243 is provided inside the extraction plate 241.

[0041] It should be noted that the extraction component 24 includes an extraction plate 241 that is slidably installed inside the isolation component 21. A first handle 242 is fixedly installed on the top of the extraction plate 241. A placement groove 243 is opened inside the extraction plate 241. The placement groove 243 is in a parallel and connected state with the isolation groove 212. The diameter of the placement groove 243 is the same as the width of the isolation groove 212. The bottom of the placement groove 243 is horizontal with the groove at the bottom of the isolation plate 211. Therefore, when the moving component 27 is activated and drives the filter paper mounting component 23 at the bottom of the placement component 25 to move closer to the extraction component 24, the filter paper mounting component 23 inside the second sampling head 15 can be squeezed into the placement groove 243, thereby completing the function of collecting and isolating the filter paper mounting component 23 after sampling.

[0042] like Figures 3 to 4 As shown, the placement component 25 includes a mounting plate 251 that is slidably mounted on the isolation protrusion 213, and a second handle 252 is fixedly mounted on the top of the mounting plate 251.

[0043] It should be noted that the placement component 25 includes a mounting plate 251 that is slidably mounted on the isolation protrusion 213. A second handle 252 is fixedly mounted on the top of the mounting plate 251. The isolation plate 211 is provided with the isolation protrusion 213. When the mounting plate 251 is placed on the isolation protrusion 213, the top of the isolation protrusion 213 can be sealed to prevent air leakage inside the isolation plate 211.

[0044] like Figures 4 to 7 As shown, the transmission component 26 includes transmission protrusions 263 symmetrically arranged and fixedly installed on the inner wall of the second sampling head 15. A screw 264 is fixedly installed on the top of the transmission protrusion 263. The output end of the screw 264 is connected to a first motor 265. A third fixing block 262 is provided outside the first motor 265. A transmission sealing ring 261 is fixedly installed on the side of the third fixing block 262.

[0045] It should be noted that when the screw 264 starts and drives the transmission sealing ring 261 to the bottom, the top of the transmission sealing ring 261 and the groove at the bottom of the isolation plate 211 are at the same level. The third fixing block 262 is equipped with a sensor. When the transmission sealing ring 261 moves to the top and bottom, it can be used to start the screw 264 to rotate forward and reverse, thereby driving the transmission sealing ring 261 to rise or fall.

[0046] like Figures 5 to 8As shown, the moving part 27 includes a second motor 271 fixedly installed at the bottom of the isolation plate 211 and located below the placement part 25. The end of the second motor 271 is connected to a pressing moving strip 272, which rotates to drive the filter paper mounting part 23 to move.

[0047] It should be noted that the extrusion moving strip 272 is rotatably mounted on the inner wall of the isolation plate 211, and the shape of the extrusion moving strip 272 is the arc shape of the outer wall of the mounting plate 251. Therefore, when the second motor 271 rotates, it can drive the extrusion moving strip 272 to rotate. The extrusion moving strip 272 rotates around the output shaft of the second motor 271, and its length exceeds the radius of the arc. Therefore, when rotating, it can drive the internally sliding filter paper mounting component 23 to move closer to the center of the transmission sealing ring 261, thereby achieving the effect that the rotation of the extrusion moving strip 272 can... The purpose of the filter paper mounting component 23 at the bottom of the mounting plate 251 is to press it towards the removal component 24. If the filter paper mounting component 23 at the top of the transmission sealing ring 261 is placed in a horizontal position in the isolation groove 212, the filter paper mounting component 23 inside one side of the mounting plate 251 will press the filter paper mounting component 23 at the top of the transmission sealing ring 261 to achieve the effect of replacement and collection. The rotation of the pressing moving bar 272 can press the filter paper mounting component 23 at the bottom of the mounting plate 251 towards the removal component 24, so that the filter paper mounting component 23 moves into the interior of the second sampling head 15, thereby achieving the effect and purpose of replacement.

[0048] like Figures 2 to 5 As shown, an air inlet plate 161 is fixedly installed on the top of the second sampling head 15. The top of the air inlet plate 161 is fixedly installed with the sampling cover 16. Air inlets 162 are symmetrically arranged on the side of the air inlet plate 161.

[0049] It should be noted that an air inlet plate 161 is fixedly installed on the top of the second sampling head 15. The top of the air inlet plate 161 is fixedly installed with the sampling cover 16. The side of the air inlet plate 161 is symmetrically provided with air inlets 162 for air intake. The design of the protruding lower part of the air inlet plate 161 and the sampling cover 16 can be used to isolate some larger leaves and solids.

[0050] like Figures 4 to 5 As shown, the bottom of the filter paper mounting component 23 is provided with an elastic material, which is rubber.

[0051] It should be noted that the top of the filter paper mounting component 23 is provided with an elastic material, which is rubber. This prevents the transmission sealing ring 261 from deforming upon contact with the filter paper mounting component 23, while also ensuring a seal between the top of the transmission sealing ring 261 and the bottom of the filter paper mounting component 23.

[0052] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of the embodiments described above, all of which are within the protection scope of the present invention.

Claims

1. An ambient air particulate matter comprehensive sampling device, comprising an information collector (1), characterized in that: The bottom of the information collector (1) is fixedly installed with a bracket (11), the side of the information collector (1) is provided with a storage box (12), the top of the storage box (12) is fixedly installed with a tank storage block (13), the top of the information collector (1) is connected with a first sampling head (14), the top of the first sampling head (14) is connected with a second sampling head (15), both the first sampling head (14) and the second sampling head (15) are provided with a removal device (2), the top of the second sampling head (15) is fixedly installed with a sampling cover (16), the removal device (2) includes filter paper set in the first sampling head (14) and the second sampling head (15), the removal device (2) is used to replace and remove the filter paper; The extraction device (2) includes an isolation member (21), a sealing member (22), a filter paper mounting member (23), an extraction member (24), a placement member (25), a transmission member (26), and a moving member (27). The isolation member (21) is fixedly installed on the second sampling head (15). The sealing member (22) is fixedly installed inside the second sampling head (15). The filter paper mounting member (23) is provided at the lower part of the sealing member (22). The transmission member (26) is provided at the lower part of the filter paper mounting member (23). The extraction member (24) and the placement member (25) are provided on both sides of the isolation member (21). The extraction member (24) is used to extract the filter paper mounting member (23), and the placement member (25) is used to place the filter paper mounting member (23) into the filter paper mounting member (24). The filter paper mounting component (23) is placed inside the isolation component (21). A movable component (27) is provided at the bottom of the isolation component (21) below the placement component (25). The isolation component (21) includes an isolation plate (211) fixedly installed outside the second sampling head (15). An isolation groove (212) is provided inside the isolation plate (211). An isolation protrusion (213) is fixedly installed on one side of the isolation plate (211). The isolation protrusion (213) is used to place the placement component (25). A take-out component (24) is provided on the side away from the isolation protrusion (213). The sealing component (22) includes a first fixing block (221) fixedly installed inside the second sampling head (15). The top of the first fixing block (221) is fixedly mounted with symmetrically arranged second fixing columns (224). The outside of the second fixing column (224) is slidably mounted with a second connecting block (226). The top of the second fixing column (224) is fixedly mounted with a first fixing plate (225). The top of the second connecting block (226) is provided with a first spring (227). The lower part of the second connecting block (226) is fixedly mounted with symmetrically arranged sealing plates (228). The lower part of the sealing plate (228) is fixedly mounted with a first fixing column (222). The bottom of the first fixing column (222) is fixedly mounted with a first connecting block (223). The first connecting block (223) and the filter paper mounting component are connected. (23) Contact, used to seal the filter paper mounting part (23), the first fixing block (221) is provided with a sealing protrusion (229), the sealing protrusion (229) is used to place the sealing plate (228), the transmission part (26) includes a transmission protrusion (263) fixedly installed on the inner wall of the second sampling head (15), the top of the transmission protrusion (263) is fixedly installed with a screw (264), the output end of the screw (264) is connected to a first motor (265), the outside of the first motor (265) is provided with a third fixing block (262), the side of the third fixing block (262) is fixedly installed with a transmission sealing ring (261), when the moving part (27) is started,When the filter paper mounting piece (23) at the bottom of the placement piece (25) moves along the isolation groove (212) towards the extraction piece (24), the filter paper mounting piece (23) inside the second sampling head (15) is squeezed into the interior of the extraction piece (24).

2. The ambient air particulate matter comprehensive sampling device according to claim 1, characterized in that: The filter paper mounting component (23) includes a filter paper placement plate (231) that is slidably installed on the inner wall of the second sampling head (15). A filter paper squeezing plate (232) is provided at the lower part of the filter paper placement plate (231), and the filter paper placement plate (231) and the filter paper squeezing plate (232) are in frictional contact.

3. The ambient air particulate matter comprehensive sampling device according to claim 2, characterized in that: The extraction component (24) includes an extraction plate (241) that is slidably installed inside the isolation component (21). A first handle (242) is fixedly installed on the top of the extraction plate (241), and a placement slot (243) is provided inside the extraction plate (241).

4. The ambient air particulate matter comprehensive sampling device according to claim 3, characterized in that: The placement component (25) includes a mounting plate (251) that is slidably mounted on an isolation protrusion (213), and a second handle (252) is fixedly mounted on the top of the mounting plate (251).

5. The ambient air particulate matter comprehensive sampling device according to claim 4, characterized in that: The moving part (27) includes a second motor (271) fixedly installed at the bottom of the isolation plate (211) and located below the placement part (25). The end of the second motor (271) is connected to a squeezing moving strip (272), which rotates to drive the filter paper mounting part (23) to move.

6. The ambient air particulate matter comprehensive sampling device according to claim 5, characterized in that: An air inlet plate (161) is fixedly installed on the top of the second sampling head (15). The top of the air inlet plate (161) is fixedly installed with the sampling cover (16). Air inlets (162) are symmetrically arranged on the side of the air inlet plate (161).

7. The ambient air particulate matter comprehensive sampling device according to claim 6, characterized in that: The bottom of the filter paper mounting component (23) is provided with an elastic material, which is rubber.

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