Windproof and noise reduction type atmospheric particulate matter sampler

Abstract

The utility model discloses a kind of windproof noise reduction type atmospheric particulate matter samplers, including sampling box, and the inside perimeter side of sampling box is equipped with sound-absorbing cotton;Sampling box is equipped with first fixed plate and second fixed plate;Second fixed plate is equipped with second sliding rail, and sliding rail is equipped with rack in second sliding rail, and rack is detachably equipped with multiple sampling tubes on rack;First fixed plate bottom is equipped with first sliding rail, and the top of sampling tube and first sliding rail abut;First fixed plate is equipped with sampling port, and sampling port upper side is equipped with suction pump;Second fixed plate is equipped with moving assembly;First fixed plate is equipped with downcomer, and downcomer is equipped with sealing plug;Downcomer is equipped with pressing assembly;Sampling box is equipped with controller. Sampling of different time periods is set by controller, moving assembly moves rack, sampling tube is sequentially sampled and sealed, so as to realize independent sampling of different time periods, without manual sampling tube replacement, improve sampling efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of atmospheric sampling equipment, and in particular relates to a windproof and noise-reducing atmospheric particulate matter sampler. Background Technology

[0002] Atmospheric particulate matter samplers are crucial equipment in environmental monitoring, primarily used to collect suspended particulate matter and gaseous pollutants from the air. By accurately collecting and analyzing atmospheric samples, this equipment can monitor pollutant concentration levels in real time, providing a scientific basis for assessing ambient air quality and its impact on human health and the ecological environment. In terms of applications, this instrument is widely used not only in atmospheric environmental monitoring by environmental protection departments but also in public health fields such as disease prevention and control, occupational health protection, and provides technical support for environmental research in scientific research institutions. When used in conjunction with analytical instruments, the system can accurately determine the composition and concentration of polluting gases, providing data support for environmental management departments to formulate pollution prevention and control measures, ultimately achieving the goal of protecting the public's healthy living environment. Existing sampling equipment suffers from limited functionality, failing to achieve independent sample dispensing and storage. For example, a constant-flow atmospheric sampling device disclosed in patent publication number CN217901314U uses only one sampling bottle. After each sampling, the sampling bottle must be manually replaced before subsequent sampling can proceed, lacking the ability for automatic sampling at different time periods, leading to a significant waste of human resources. Utility Model Content

[0003] Based on the above background, the purpose of this utility model is to provide a windproof and noise-reducing atmospheric particulate matter sampler.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A windproof and noise-reducing atmospheric particulate matter sampler includes a sampling box, the inner periphery of which is provided with sound-absorbing cotton.

[0006] The sampling box is provided with a first fixing plate and a second fixing plate, with the first fixing plate located above the second fixing plate;

[0007] The second fixed plate is provided with a second slide rail, and a placement rack is slidably provided in the second slide rail. Multiple sampling tubes are detachably provided on the placement rack.

[0008] The bottom of the first fixing plate is provided with a first slide rail, and the top of the sampling tube abuts against the first slide rail;

[0009] A sampling port is provided on the first fixed plate, and an air pump is provided above the sampling port. The air pump is located on the first fixed plate.

[0010] The sampling box is equipped with an air inlet pipe, which is connected to an air pump;

[0011] The second fixed plate is provided with a moving component for controlling the placement frame to slide within the second slide rail, so that the sampling tubes move sequentially below the sampling port;

[0012] The first fixed plate is provided with a feeding pipe, the top of which penetrates the top of the sampling box and the bottom of which penetrates the bottom of the first fixed plate;

[0013] The feed pipe is equipped with a sealing plug;

[0014] The feeding tube is equipped with a pressing component for sealing the sampling tube after sampling with a sealing plug;

[0015] The sampling box is equipped with a controller, which is electrically connected to the air pump.

[0016] The above technical solution involves placing an empty sampling tube into a placement rack, which is then placed into the second slide rail. The controller sets sampling times for different periods. When sampling is required, the moving component moves the placement rack, moving the first sampling tube below the sampling port. The sampling tube abuts against the first slide rail, forming a sealing ring. The vacuum pump starts to expel air from the sampling tube and then samples external air into the tube through the air inlet pipe. The vacuum pump stops, and the moving component continues to move, moving the sampling tube below the discharge pipe. The pressing component presses down the sealing plug to seal the discharge pipe, completing the gas sampling. At this point, the second sampling tube is below the sampling port. The controller starts the vacuum pump according to the time setting to continue sampling, thus achieving independent sampling for different time periods without the need for manual replacement of the sampling tubes, improving sampling efficiency.

[0017] Furthermore, the top of the sampling box is provided with a dustproof block, which is located on one side of the air inlet pipe; a movable groove is opened on the side of the dustproof block, a dustproof plate is slidably arranged in the movable groove, and an electric telescopic rod is provided in the movable groove, the output end of which is connected to the side of the dustproof plate;

[0018] The electric telescopic pole is electrically connected to the controller.

[0019] With the above technical solution, when sampling is not required, the electric telescopic rod pushes the dustproof plate out of the moving slot. The dustproof plate covers the top of the air intake pipe to seal the air intake pipe and prevent dust from entering and accumulating at the port of the air intake pipe. When sampling is required, the controller controls the electric telescopic rod to move the dustproof plate into the dustproof block and open the air intake pipe for sampling.

[0020] Furthermore, the pressing component includes a mounting block, the mounting block has threads on its side, the upper end of the feed tube has threads on its inner side, and the mounting block is threadedly connected to the feed tube;

[0021] The mounting block is provided with a handle on its top;

[0022] A cylinder is fixedly installed at the bottom of the mounting block, and a pressure plate is connected to the output end of the cylinder. The pressure plate slides against the inner wall of the feeding pipe.

[0023] The cylinder is electrically connected to the controller.

[0024] The above technical solution involves placing the sealing plug into the feed tube, with the bottom sealing plug abutting against the top of the placement frame. After the mounting block is threaded onto the feed tube, the cylinder drives the pressure plate to press down on the top sealing plug. When the sampling tube moves below the feed tube after sampling, the cylinder drives the pressure plate to move down, generating pressure on the sealing plug and sealing the sampling tube with the bottom sealing plug.

[0025] Furthermore, a sliding groove is provided on the second fixed plate. The sliding groove is U-shaped, and the top of both ends of the sliding groove penetrates the top of the second fixed plate. One end of the sliding groove is located inside the second slide rail, and the other end is located outside the second slide rail.

[0026] The second slide rail has a storage groove inside, and the storage groove is connected to the sliding groove;

[0027] The moving component includes a sliding block, which is U-shaped and slidably disposed in a sliding groove;

[0028] The top of the sliding block is provided with a pushing block, the bottom of the pushing block is provided with a first groove, and one end of the sliding block is slidably disposed in the first groove;

[0029] A telescopic post is provided in the middle of the sliding block, and one end of the telescopic post is connected to the top of the first groove;

[0030] A first spring is sleeved on the outside of the telescopic column, and the two ends of the first spring are respectively connected to the sliding block and the first groove;

[0031] The push block can slide into the storage slot accordingly;

[0032] A threaded rod is rotatably provided on the second fixed plate, one end of which is connected to the output end of the motor; the motor is fixed on the second fixed plate.

[0033] The sliding block is located at one end outside the second slide rail and is threadedly connected to the threaded rod.

[0034] The motor is electrically connected to the controller.

[0035] Through the above technical solution, the motor drives the threaded rod to rotate, thereby driving the sliding block to move, and the pushing block to move accordingly, thus pushing the placement frame.

[0036] Furthermore, the placement rack includes a first placement plate and a second placement plate, the first placement plate being disposed above the second placement plate, and the first placement plate and the second placement plate being connected by a connecting plate;

[0037] The top center of the first placement plate protrudes and abuts against the first slide rail;

[0038] The first placement plate has a first placement slot, and the second placement plate has a second placement slot, which is located below the corresponding first placement slot.

[0039] With the above technical solution, the first placement groove and the second placement groove fix the upper and lower ends of the sampling tube, and the top of the first placement plate abuts against the first slide rail. When the feeding tube is located between two adjacent sampling tubes during the movement, the sealing plug will not fall off.

[0040] Furthermore, an arc-shaped block is slidably provided in the second placement groove, the surface of the arc-shaped block being arc-shaped and corresponding to the arc shape of the bottom of the sampling tube;

[0041] The second placement slot is equipped with a second spring, one end of which is connected to the bottom of the second placement slot and the other end is connected to the bottom of the arc-shaped block.

[0042] Through the above technical solution, the elastic force of the second spring can make the top of the sampling tube better contact with the first slide rail.

[0043] Furthermore, both ends of the first slide rail are inclined upwards.

[0044] The above technical solution allows the second spring to be compressed along the inclined track before sampling, and to return to normal along the track after sampling and sealing.

[0045] Furthermore, the sampling box is equipped with soundproof doors on both sides.

[0046] The above technical solution facilitates the placement of the rack into the sampling box from one end and its removal from the other end.

[0047] This utility model has the following beneficial effects:

[0048] 1. By setting sampling times for different time periods through the controller, when sampling is required, the moving component moves the placement rack, causing the first sampling tube on the placement rack to move below the sampling port. The sampling tube abuts against the first slide rail, forming a sealing ring. The air pump starts to expel the air from the sampling tube and then samples external air into the sampling tube through the air inlet pipe. The air pump stops, and the moving component continues to move, moving the sampling tube below the discharge pipe. The pressing component presses down the sealing plug to seal the discharge pipe, completing the gas sampling. At this time, the second sampling tube is located below the sampling port. The controller starts the air pump according to the time setting to continue sampling, thereby realizing independent sampling for different time periods without the need for manual replacement of sampling tubes, improving sampling efficiency.

[0049] 2. The dustproof plate prevents dust from entering and accumulating at the air inlet. The second spring allows the top of the sampling tube to better contact the first slide rail, improving sampling accuracy. The sound-absorbing cotton reduces noise generated during sampling. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0051] Figure 1 This is a front sectional view of the present invention;

[0052] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0053] Figure 3 This is a three-dimensional structural diagram of the sampling box of this utility model;

[0054] Figure 4 This is a three-dimensional cross-sectional structural diagram of the placement rack of this utility model;

[0055] Figure 5 This is a three-dimensional structural diagram of the second fixing plate of this utility model;

[0056] Figure 6 This is a cross-sectional three-dimensional structural diagram of the mobile component of this utility model.

[0057] Wherein: 1. First fixing plate; 11. First slide rail; 12. Sampling port;

[0058] 2. Second fixing plate; 21. Second slide rail; 22. Sliding groove; 23. Storage groove;

[0059] 3. Placement rack; 31. First placement plate; 32. Second placement plate; 33. First placement slot; 34. Second placement slot; 35. Arc-shaped block; 36. Second spring; 37. Connecting plate;

[0060] 4. Air pump;

[0061] 5. Sampling tube; 51. Sealing plug;

[0062] 6. Feed pipe;

[0063] 7. Sliding block; 71. Pushing block; 72. First groove; 73. Telescopic column; 74. First spring; 75. Threaded rod; 76. Motor;

[0064] 8. Mounting block; 81. Cylinder; 82. Pressure plate;

[0065] 9. Sampling box; 91. Air inlet pipe; 92. Controller; 93. Dustproof block; 94. Dustproof plate; 95. Moving trough; 96. Electric telescopic rod; 97. Soundproof door. Detailed Implementation

[0066] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0067] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0068] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0069] like Figure 1-6As shown, a windproof and noise-reducing atmospheric particulate matter sampler includes a sampling box 9, with sound-absorbing cotton provided on the inner periphery of the sampling box 9; a first fixing plate 1 and a second fixing plate 2 are provided inside the sampling box 9, with the first fixing plate 1 positioned above the second fixing plate 2; a second slide rail 21 is provided on the second fixing plate 21, and a placement rack 3 is slidably mounted inside the second slide rail 21, with multiple sampling tubes 5 detachably mounted on the placement rack 3; a first slide rail 11 is provided at the bottom of the first fixing plate 1, and the top of the sampling tubes 5 abuts against the first slide rail 11; a sampling port 12 is provided on the first fixing plate 1, and an air pump 4 is provided above the sampling port 12, mounted on the first fixing plate 1; the sampling box... The sampling box 9 is equipped with an air inlet pipe 91, which is connected to the air pump 4; the second fixed plate 2 is equipped with a moving component for controlling the placement frame 3 to slide within the second slide rail 21, so that the sampling tubes 5 move sequentially below the sampling port 12; the first fixed plate 1 is equipped with a feeding pipe 6, the top of which penetrates the top of the sampling box 9 and the bottom of which penetrates the bottom of the first fixed plate 1; a sealing plug 51 is provided inside the feeding pipe 6; a pressing component is provided inside the feeding pipe 6 for sealing the sampling tubes 5 after sampling with the sealing plug 51; the sampling box 9 is equipped with a controller 92, which is electrically connected to the air pump 4, and soundproof doors 97 are rotatably provided on both sides of the sampling box 9.

[0070] Before sampling using the sampling box 9, place the empty sampling tube 5 into the placement rack 3, and then place the placement rack 3 into the sampling box 9 and install it into the second slide rail 21. The controller 92 sets sampling for different time periods. When sampling is required, the moving component moves the placement rack 3, causing the first sampling tube 5 on the placement rack 3 to move below the sampling port 12. The sampling tube 5 abuts against the first slide rail 11, forming a sealing ring. The air pump 4 starts to expel the air from the sampling tube 5 and then samples external air into the sampling tube 5 through the air inlet pipe 91. The air pump 4 is then turned off, and the moving component continues to move, moving the sampling tube 5 below the discharge pipe 6. The pressing component presses down the sealing plug 51 to seal the discharge pipe 6, completing the gas sampling. At this time, the second sampling tube 5 is located below the sampling port 12. The controller 92 starts the air pump 4 according to the time setting to continue sampling, thereby realizing independent sampling for different time periods without the need for manual replacement of the sampling tube 5, thus improving sampling efficiency.

[0071] Furthermore, a dustproof block 93 is provided on the top of the sampling box 9, and the dustproof block 93 is located on one side of the air inlet pipe 91; a movable groove 95 is provided on the side of the dustproof block 93, and a dustproof plate 94 is slidably provided in the movable groove 95. An electric telescopic rod 96 is provided in the movable groove 95, and the output end of the electric telescopic rod 96 is connected to the side of the dustproof plate 94; the electric telescopic rod 96 is electrically connected to the controller 92, and the dustproof plate 94 covers the top of the air inlet pipe 91 to seal the air inlet pipe 91, preventing dust from entering and accumulating at the port of the air inlet pipe 91.

[0072] Furthermore, the pressing assembly includes a mounting block 8, which has threads on its side and threads on the inner side of the upper end of the feed tube 6. The mounting block 8 is threadedly connected to the feed tube 6. The top of the mounting block 8 has a handle. A cylinder 81 is fixedly mounted on the bottom of the mounting block 8. The output end of the cylinder 81 is connected to a pressure plate 82, which slides against the inner wall of the feed tube 6. The cylinder 81 is electrically connected to the controller 92. The mounting block 8 and the feed tube 6 are detachably installed. After the sealing plug 51 is inserted from the top of the feed tube 6, the mounting block 8 is threadedly installed to the feed tube 6. The cylinder 81 drives the pressure plate 82 to press down the top sealing plug 51. When the sampling tube 5 moves below the feed tube 6 after sampling, the cylinder 81 drives the pressure plate 82 to move down, generating pressure on the sealing plug 51 and sealing the bottom sealing plug 51 with the sampling tube 5.

[0073] Furthermore, a sliding groove 22 is provided on the second fixed plate 2. The sliding groove 22 is U-shaped, and the tops of both ends of the sliding groove 22 penetrate through the top of the second fixed plate 2. One end of the sliding groove 22 is located inside the second slide rail 21, and the other end is located outside the second slide rail 21. A storage groove 23 is provided inside the second slide rail 21, and the storage groove 23 communicates with the sliding groove 22. The moving component includes a sliding block 7, which is U-shaped and slidably disposed in the sliding groove 22. A pushing block 71 is provided at the top of the sliding block 7, and a first groove 72 is provided at the bottom of the pushing block 71. One end of the sliding block 7 is slidably disposed in the first groove 72. A telescopic column 73 is provided in the middle of the sliding block 7, and one end of the telescopic column 73 is connected to the top of the first groove 72. A first spring 74 is sleeved on the outside of the telescopic column 73. The two ends of the spring 74 are connected to the sliding block 7 and the first groove 72 respectively; the push block 71 can slide into the storage groove 23 accordingly; a threaded rod 75 is rotatably provided on the second fixed plate 2, and one end of the threaded rod 75 is connected to the output end of the motor 76; the motor 76 is fixed on the second fixed plate 2; the end of the sliding block 7 located outside the second slide rail 21 is threadedly connected to the threaded rod 75; the motor 76 is electrically connected to the controller 92. First, the push block 71 is pressed into the storage groove 23, and the placement rack 3 is placed in the second slide rail 21. Under the elastic force of the first spring 74, the push block 71 is pushed out of the storage groove 23 and located on one side of the placement rack 3. The motor 76 drives the threaded rod 75 to rotate, thereby driving the sliding block 7 to move, and the push block 71 moves accordingly, pushing the placement rack 3.

[0074] Furthermore, the placement rack 3 includes a first placement plate 31 and a second placement plate 32. The first placement plate 31 is positioned above the second placement plate 32, and the first placement plate 31 and the second placement plate 32 are connected by a connecting plate 37. The top center of the first placement plate 31 protrudes and abuts against the first slide rail 11. A first placement groove 33 is formed on the first placement plate 31, and a second placement groove 34 is formed on the second placement plate 32. The second placement groove 34 is positioned below the corresponding first placement groove 33, and an arc-shaped block 35 slides within the second placement groove 34. The surface of the arc-shaped block 35 is arc-shaped and corresponds to the arc shape of the bottom of the sampling tube 5; a second spring 36 is provided in the second placement groove 34, one end of the second spring 36 is connected to the bottom of the second placement groove 34, and the other end is connected to the bottom of the arc-shaped block 35. The two ends of the first slide rail 11 are inclined upwards. The first placement groove 33 and the second placement groove 34 fix the upper and lower ends of the sampling tube 5, and the top of the first placement plate 31 abuts against the first slide rail 11. When the feeding tube 6 is located between two adjacent sampling tubes 5 during the movement, the sealing plug 51 will not fall off.

[0075] The working principle of this utility model is as follows: First, place the empty sampling tube 5 into the placement rack 3, open the soundproof door 97 of the sampling box 9, press the push block 71 into the storage groove 23, and slide the placement rack 3 into the second slide rail 21. The top of the placement rack 3 and the top of the sampling tube 5 are both in contact with the first slide rail 11. The push block 71 pops out from the storage groove 23 into the second slide rail 21, and is used to push the placement rack 3 on one side. At this time, the first sampling tube 5 in the placement rack 3 is located below the sampling port 12, and the end of the first placement plate 31 is located below the feed tube 6, abutting the bottom of the feed tube 6. Place the sealing plug 51 into the feed tube 6. The sealing plug 51 will not fall off the feed tube 6. Thread the mounting block 8 to the feed tube 6. Set different settings through the controller 92. When sampling is required, the electric telescopic rod 96 moves the dustproof plate 94 into the dustproof block 93, opens the air inlet pipe 91, and starts to expel the air from the sampling tube 5. Then, the external air is sampled into the sampling tube 5 through the air inlet pipe 91. The air pump 4 is turned off, and the motor 76 drives the threaded rod 75 to rotate, thereby moving the sliding block 7. The pushing block 71 moves accordingly and pushes the placement frame 3 from the side. The sampling tube 5 moves to the bottom of the discharge pipe 6. The pressing component presses down the sealing plug 51 to seal the discharge pipe 6, completing the gas sampling. This allows for independent sampling at different time periods without the need for manual replacement of the sampling tube 5, improving sampling efficiency. After sampling, the placement frame 3 is taken out from the soundproof door 97 on the other side.

[0076] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A windproof and noise-reducing atmospheric particulate matter sampler, comprising a sampling box (9), characterized in that: The sampling box (9) is provided with sound-absorbing cotton on its inner periphery; The sampling box (9) is provided with a first fixing plate (1) and a second fixing plate (2), with the first fixing plate (1) located above the second fixing plate (2); The second fixed plate (2) is provided with a second slide rail (21), and a placement rack (3) is slidably provided in the second slide rail (21). Multiple sampling tubes (5) are detachably provided on the placement rack (3). The first fixed plate (1) has a first slide rail (11) at the bottom, and the top of the sampling tube (5) abuts against the first slide rail (11); A sampling port (12) is provided on the first fixed plate (1), and an air pump (4) is provided above the sampling port (12). The air pump (4) is located on the first fixed plate (1). The sampling box (9) is provided with an air inlet pipe (91), which is connected to the air pump (4); The second fixed plate (2) is provided with a moving component for controlling the placement frame (3) to slide in the second slide rail (21) so that the sampling tube (5) moves sequentially below the sampling port (12); The first fixing plate (1) is provided with a feeding pipe (6), the top of the feeding pipe (6) penetrates the top of the sampling box (9), and the bottom penetrates the bottom of the first fixing plate (1); The feed pipe (6) is equipped with a sealing plug (51); The feeding tube (6) is equipped with a pressing component, which is used to seal the sampling tube (5) after sampling with the sealing plug (51); The sampling box (9) is equipped with a controller (92), which is electrically connected to the air pump (4).

2. The windproof and noise-reducing atmospheric particulate matter sampler according to claim 1, characterized in that: The sampling box (9) is provided with a dustproof block (93) on the top, and the dustproof block (93) is located on one side of the air inlet pipe (91); the side of the dustproof block (93) is provided with a moving groove (95), and a dustproof plate (94) is slidably provided in the moving groove (95); an electric telescopic rod (96) is provided in the moving groove (95), and the output end of the electric telescopic rod (96) is connected to the side of the dustproof plate (94); The electric telescopic rod (96) is electrically connected to the controller (92).

3. The windproof and noise-reducing atmospheric particulate matter sampler according to claim 1, characterized in that: The pressing assembly includes a mounting block (8), the mounting block (8) has threads on its side, the upper end of the feed tube (6) has threads on its inner side, and the mounting block (8) is threadedly connected to the feed tube (6). The mounting block (8) is provided with a handle on its top; The bottom of the mounting block (8) is fixedly provided with a cylinder (81), and the output end of the cylinder (81) is connected to a pressure plate (82). The pressure plate (82) slides against the inner wall of the feeding pipe (6). The cylinder (81) is electrically connected to the controller (92).

4. The windproof and noise-reducing atmospheric particulate matter sampler according to claim 1, characterized in that: The second fixing plate (2) is provided with a sliding groove (22). The sliding groove (22) is U-shaped, and the top of both ends of the sliding groove (22) penetrates the top of the second fixing plate (2). One end of the sliding groove (22) is located inside the second slide rail (21), and the other end is located outside the second slide rail (21). The second slide rail (21) has a storage groove (23) inside, and the storage groove (23) is connected to the sliding groove (22); The moving component includes a sliding block (7), which is U-shaped and slidably disposed in a sliding groove (22); The sliding block (7) has a push block (71) at the top and a first groove (72) at the bottom. One end of the sliding block (7) is slidably disposed in the first groove (72). The sliding block (7) is provided with a telescopic column (73) in the middle position, and one end of the telescopic column (73) is connected to the top of the first groove (72); The telescopic column (73) is fitted with a first spring (74) on its outer side, and the two ends of the first spring (74) are respectively connected to the sliding block (7) and the first groove (72); The push block (71) can slide into the storage slot (23); A threaded rod (75) is rotatably provided on the second fixing plate (2), one end of which is connected to the output end of the motor (76); the motor (76) is fixed on the second fixing plate (2); The sliding block (7) is threaded to the threaded rod (75) at one end located outside the second slide rail (21); The motor (76) is electrically connected to the controller (92).

5. The windproof and noise-reducing atmospheric particulate matter sampler according to claim 1, characterized in that: The placement rack (3) includes a first placement plate (31) and a second placement plate (32), the first placement plate (31) is disposed above the second placement plate (32), and the first placement plate (31) and the second placement plate (32) are connected by a connecting plate (37); The top center of the first placement plate (31) protrudes and abuts against the first slide rail (11); The first placement plate (31) has a first placement groove (33), and the second placement plate (32) has a second placement groove (34), which is located below the corresponding first placement groove (33).

6. The windproof and noise-reducing atmospheric particulate matter sampler according to claim 5, characterized in that: An arc-shaped block (35) is slidably provided in the second placement groove (34). The surface of the arc-shaped block (35) is arc-shaped and corresponds to the arc shape of the bottom of the sampling tube (5). The second placement groove (34) is provided with a second spring (36), one end of the second spring (36) is connected to the bottom of the second placement groove (34), and the other end is connected to the bottom of the arc block (35).

7. The windproof and noise-reducing atmospheric particulate matter sampler according to claim 6, characterized in that: The first slide rail (11) is inclined upward at both ends.

8. The windproof and noise-reducing atmospheric particulate matter sampler according to any one of claims 1-7, characterized in that: The sampling box (9) is equipped with soundproof doors (97) on both sides.

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