Dust sampling device for occupational health sampling

Abstract

The invention belongs to the technical field of dust sampling, and discloses a dust sampling device for occupational health sampling, which comprises a dust sampler, a tripod can be tightly clamped on the bottom end of the dust sampler, a sampling head can be in threaded connection in the top end of the dust sampler, and a plurality of dust inlet holes are formed in the sampling head in a surrounding manner; a motor on a chassis is manually started to drive a screw rod to rotate and drive a sliding block and a toothed plate to synchronously move, the moving toothed plate is in contact with and meshed with teeth, so that a double-layer rotating plate is driven to rotate, an abutting breast board is driven to generate angle inclination, a rubber abutting plate is in contact with and abuts against the outer wall of a sampling head, and the sampling head is reinforced; the wind power can automatically drive the wind wheel on the transverse rod and the top plates on the two sides to synchronously rotate, the T-shaped pressing plate is driven to horizontally move up and down in a reciprocating mode, then the multiple brushes can be driven to move up and down on the multiple dust inlet holes in a reciprocating mode, the surface of the dust inlet holes can be continuously cleaned, and the working efficiency of dust collecting and sampling is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of dust sampling, in particular to a dust sampling device for occupational health sampling. Background Art

[0002] Dust sampler refers to a portable device for collecting dust samples in dusty air. It measures the dust concentration in the air. In addition to the need for safe production management, it also provides a scientific basis for the study of dust prevention, dust reduction and dust removal measures. Using dust sampler to measure dust is a recognized method with high accuracy. It is widely used in health monitoring and evaluation in disease prevention, environmental monitoring, labor protection, safety supervision, military, scientific research and teaching, metallurgy, petrochemical, railway, building materials and other departments. It is specially used to measure the average dust concentration in the air in the workplace of production teams. The evaluation of indoor air quality in environmental protection standards generally adopts an 8-hour sampling time, and the short-term sampling time is 2 hours or 1 hour. These time settings are generally used for rapid evaluation of ambient air quality or monitoring of special places; When using the dust sampler for occupational health sampling, care must be taken to avoid strong vibration, collision, dust, rain, and snow. When used outdoors, special attention must be paid to the impact of environmental factors on the equipment. If dust sampling is carried out outdoors and severe windy weather is encountered, relying solely on a small section of threaded installation connection between the sampling head and the sampler may not be enough to ensure the stable installation of the sampling head for a long time. In addition, when encountering windy weather, a kind of particulate impurities contained in the wind may block the dust inlet hole on the sampling head, causing inconvenience to the overall sampling process, thereby affecting the occupational health sampling effect. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides a dust sampling device for occupational health sampling.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dust sampling device for occupational health sampling, comprising a dust sampler, a tripod can be tightly clamped on the bottom end of the dust sampler, a sampling head can be threadedly connected to the top end of the dust sampler, a plurality of dust inlet holes are arranged around the sampling head, a reinforcement sampling part is provided on the top outer wall of the dust sampler, the reinforcement sampling part includes a chassis fixedly connected to the top outer wall of the dust sampler, a clamping structure capable of reinforcing and limiting the sampling head is provided on the chassis, a rotating structure with driving capability is also provided on one side of the top end of the chassis, and a cleaning structure capable of cleaning each of the dust inlet holes is provided on the rotating structure; The clamping structure includes three T-shaped round rods, the bottom ends of the three T-shaped round rods are fixedly connected to the top outer wall of the chassis, the three T-shaped round rods are movably sleeved with a pressure plate, and the outer walls of one end of the three pressure plates are fixedly connected with a rubber plate, and the other ends of the three rubber plates can be intermittently and tightly connected to the outer wall of the sampling head; Among them, the cleaning structure includes a vertical cylinder rod, and the vertical cylinder rod is fixedly connected with a horizontal plate ring near the top. A plurality of brushes are fixedly connected with the inner wall of the horizontal plate ring in a surrounding manner. Each of the brushes can be intermittently slidably connected with the sampling head and multiple dust inlet holes.

[0005] Preferably, the clamping structure specifically includes a double-layer rotating plate which is rotatably connected to the outer wall of the top end of the chassis, three partitions are fixedly connected in a surrounding manner in the double-layer rotating plate, and square groove plates are also slidably connected to the three pressure railings.

[0006] Preferably, the outer walls of the three square groove plates can be slidably connected to the inner wall of the double-layer rotating plate, and the top outer walls of the three square groove plates are fixedly connected with T-shaped shafts. The three T-shaped shafts are also rotatably connected to one end of the double-layer rotating plate, and the outer wall of the double-layer rotating plate is also specifically fixedly connected with a plurality of teeth in a circumferential manner.

[0007] Preferably, the rotating structure includes a support plate and a motor fixedly connected to the outer wall of one end of the support plate, the motor is specifically a model that can rotate forward and reverse, a screw is fixedly connected to the motor, a guide rod is provided below the screw, a slider is threadedly connected to the screw, and the bottom end of the support plate is fixedly connected to the outer wall of one side of the top of the chassis.

[0008] Preferably, a tooth plate is slidably connected to the guide rod, and the tooth plate and the plurality of teeth can be intermittently meshed and connected, the outer wall on one side of the top end of the tooth plate is fixedly connected to the outer wall on the bottom end of the sliding block, and one end of the guide rod is fixedly connected to the outer wall on one end of the support plate.

[0009] Preferably, a turntable is fixedly connected to one section of the screw rod, a turn handle is fixedly connected to the outer wall of the side surface of one end of the turntable, a hollow long plate is slidably connected to the turn handle, and a vertical rod is fixedly connected to the top of the hollow long plate.

[0010] Preferably, a rubber card is fixedly connected to the outer wall of the vertical rod near the top, and an annular groove that fits and engages with the rubber card is opened in the inner wall of the vertical tube rod near the bottom, the outer wall of the vertical rod and the bottom end of the vertical tube rod are through-slidably connected, and a limiting block is through-slidably connected on the outer wall of the vertical tube rod.

[0011] Preferably, the cleaning structure further includes a rectangular groove plate fixedly connected to the outer wall on one side of the top end of the chassis, a short rectangular groove is formed through one end of the rectangular groove plate, and a rectangular groove is formed through the other end of the rectangular groove plate.

[0012] Preferably, a T-shaped pressing plate is fixedly connected to the outer wall of one end of the horizontal plate ring, and the T-shaped pressing plate and the inner wall of the bottom end of the short square groove can be intermittently fitted and connected.

[0013] Preferably, a cross bar is fixedly connected to the inner walls at both ends of the rectangular trough plate, a wind wheel is movably sleeved on the outer wall of the cross bar, and a top plate is fixedly connected to the outer walls on both sides of the wind wheel, and the outer walls at one end of the two top plates can be intermittently fitted and slidably connected to the outer wall of the bottom end of the T-shaped pressure plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention starts the motor on the chassis manually, so that the motor drives the screw to rotate. The rotation of the screw drives the slider and the tooth plate to move synchronously. The moving tooth plate contacts and meshes with the teeth installed on the outer wall of the double-layer rotating plate, thereby driving the double-layer rotating plate to rotate, driving the T-shaped shaft and the square slot plate to deviate synchronously, driving the pressure bar plate to tilt at an angle in the double-layer rotating plate, and driving the rubber pressure plate to contact and press against the outer wall of the sampling head, thereby reinforcing it. When the screw rotates, the present invention will also synchronously drive the turntable and the handle to rotate, thereby driving the hollow long plate and the vertical rod to move synchronously, and the rubber card on the vertical rod can drive the vertical cylinder rod to move downward, and the downward moving vertical cylinder rod will drive the horizontal plate ring and multiple brushes to move downward synchronously to perform a short surface cleaning of the multiple dust inlet holes. In windy weather, the wind will automatically drive the wind wheel on the horizontal rod to rotate, and the rotating wind wheel will drive the top plates on both sides to rotate synchronously and drive the T-shaped pressure plate to perform a reciprocating translation up and down in the short rectangular groove area, thereby driving the multiple brushes to perform a reciprocating up and down movement in the area of ​​the multiple dust inlet holes, so as to continuously clean the surface of the multiple dust inlet holes, thereby increasing the work efficiency of dust collection and sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall front plan structure of the reinforced sampling part of the present invention; Figure 3 This is a schematic diagram of the partial split structure of the reinforced sampling part of the present invention; Figure 4 This is a schematic diagram of the overall structure of the reinforced sampling part of the present invention; Figure 5 It is a schematic diagram of the local structure of the reinforced sampling part of the present invention; Figure 6 It is a schematic diagram of the partial cross-sectional structure of the reinforced sampling part of the present invention (part 1); Figure 7 It is a schematic diagram of the partial cross-sectional structure of the reinforced sampling part of the present invention (part 2); Figure 8 For the present invention Figure 7 Schematic diagram of the local enlarged structure at point A in the middle.

[0016] In the figure: 1. Dust sampler; 11. Tripod; 12. Sampling head; 13. Dust inlet hole; 2. Strengthen the sampling part; 21. Chassis; 22. Double-layer rotating plate; 23. Partition plate; 24. Tooth plate; 2401. Tooth; 25. T-shaped round rod; 26. Pressure railing; 27. Square slot plate; 28. T-shaped shaft; 29. ​​Rubber plate; 230. Support plate; 231. Motor; 232. Screw rod; 233. Slider; 234. Turntable; 235. Turning handle; 236. Hollow long plate; 237. Vertical rod; 238. Rubber card; 239. Vertical cylinder rod; 240. Limit block; 241. Horizontal plate ring; 242. Brush; 243. T-shaped pressure plate; 244. Rectangular slot plate; 245. Short rectangular slot; 246. Rectangular slot; 247. Horizontal rod; 248. Wind wheel; 249. Top plate. DETAILED DESCRIPTION

[0017] 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.

[0018] like Figures 1 to 8 As shown, the present invention provides a dust sampling device for occupational health sampling, including a dust sampler 1, a tripod 11 can be tightly clamped on the bottom end of the dust sampler 1, a sampling head 12 can be threadedly connected inside the top end of the dust sampler 1, and a plurality of dust inlet holes 13 are arranged around the sampling head 12, a reinforcement sampling part 2 is provided on the top outer wall of the dust sampler 1, and the reinforcement sampling part 2 includes a chassis 21 fixedly connected to the top outer wall of the dust sampler 1, and the chassis 21 is provided with a clamping structure capable of reinforcing and limiting the sampling head 12, and a rotating structure with driving capability is also provided on one side of the top end of the chassis 21, and a cleaning structure capable of cleaning each dust inlet hole 13 is provided on the rotating structure; The above scheme is adopted: the motor 231 on the chassis 21 is manually started, so that the motor 231 drives the screw 232 to rotate, and the rotation of the screw 232 drives the slider 233 and the toothed plate 24 to move synchronously, and the moving toothed plate 24 will contact and mesh with the teeth 2401 installed on the outer wall of the double-layer rotating plate 22, thereby driving the double-layer rotating plate 22 to rotate, driving the T-shaped shaft 28 and the square slot plate 27 to deviate synchronously, driving the pressure fence plate 26 to produce an angle inclination in the double-layer rotating plate 22, and driving the rubber pressure plate 29 to contact and press against the outer wall of the sampling head 12 to reinforce it. When the screw 232 rotates, it will also synchronously drive the turntable 234 and the handle 235 to rotate, thereby driving the hollow long The plate 236 and the vertical rod 237 move synchronously, and the rubber card 238 on the vertical rod 237 can drive the vertical tube rod 239 to move downward, and the downward moving vertical tube rod 239 will drive the horizontal plate ring 241 and multiple brushes 242 to move downward synchronously to perform a short surface cleaning of the multiple dust inlet holes 13. In windy weather, the wind will automatically drive the wind wheel 248 on the horizontal rod 247 to rotate, and the rotating wind wheel 248 will drive the top plates 249 on both sides to rotate synchronously and drive the T-shaped pressure plate 243 to perform reciprocating translation up and down in the short rectangular groove 245, thereby driving the multiple brushes to perform reciprocating up and down movement in the multiple dust inlet holes 13 to continuously clean their surfaces.

[0019] The clamping structure includes three T-shaped round rods 25, the bottom ends of the three T-shaped round rods 25 are fixedly connected to the top outer wall of the chassis 21, and the three T-shaped round rods 25 are movably sleeved with a pressure plate 26, and the outer wall of one end of the three pressure plates 26 is also fixedly connected with a rubber plate 29, and the other ends of the three rubber plates 29 can be intermittently and tightly connected to the outer wall of the sampling head 12; The clamping structure specifically includes a double-layer rotating plate 22 which is rotatably connected to the top outer wall of the chassis 21, three partitions 23 are fixedly connected in a surrounding manner in the double-layer rotating plate 22, three pressure railings 26 are also slidably connected with square groove plates 27, the outer walls of the three square groove plates 27 can be slidably connected to the inner wall of the double-layer rotating plate 22, T-shaped shafts 28 are fixedly connected to the top outer walls of the three square groove plates 27, and the three T-shaped shafts 28 are also rotatably connected to one end of the double-layer rotating plate 22, and a plurality of teeth 2401 are specifically fixedly connected in a surrounding manner on the outer wall of the double-layer rotating plate 22.

[0020] The above scheme is adopted: when the tooth plate 24 contacts and engages with the teeth 2401 installed on the outer wall of the double-layer rotating plate 22, the double-layer rotating plate 22 can be driven to rotate. The rotating double-layer rotating plate 22 will drive the T-shaped shaft 28 and the square slot plate 27 to be offset synchronously, and the square slot plate 27 can drive the pressure plate 26 to produce an angle inclination in the double-layer rotating plate 22, gradually approaching the sampling head 12, until it drives the rubber pressure plate 29 to contact and press against the outer wall of the sampling head 12, thereby reinforcing it, helping the sampling head 12 to always maintain a stable state on the dust sampler 1, which is beneficial to the sampling effect of the sampling head 12 on dust.

[0021] The rotating structure includes a support plate 230 and a motor 231 fixedly connected to the outer wall of one end of the support plate 230. The motor 231 is specifically a model that can rotate forward and backward. A screw 232 is fixedly connected to the motor 231. A guide rod is provided below the screw 232. A slider 233 is threadedly connected to the screw 232. The bottom end of the support plate 230 is fixedly connected to the outer wall of one side of the top of the chassis 21. A tooth plate 24 is slidably connected to the guide rod. The tooth plate 24 and a plurality of teeth 2401 can be intermittently meshed. The outer wall of one side of the top of the tooth plate 24 is fixedly connected to the outer wall of the bottom end of the slider 233. One end of the guide rod is fixedly connected to the outer wall of one end of the support plate 230. The screw rod 232 is fixedly connected to the wall, a turntable 234 is fixedly connected to one section of the rod body of the screw rod 232, a turntable 234 is fixedly connected to the outer wall of the side of one end of the turntable 234, a turn handle 235 is fixedly connected to the turn handle 235 with a hollow long plate 236 in a sliding fit, a vertical rod 237 is fixedly connected to the top of the hollow long plate 236, a rubber card 238 is fixedly connected to the outer wall of the vertical rod 237 near the top, an annular groove that fits and snaps with the rubber card 238 is provided in the inner wall near the bottom of the vertical tube rod 239, the outer wall of the vertical rod 237 and the bottom end of the vertical tube rod 239 are through-connected and slidably connected, and a limiting block 240 is slidably connected to the outer wall of the vertical tube rod 239.

[0022] The above scheme is adopted: when the dust sampler 1 is started to perform dust sampling, the motor 231 on the chassis 21 can be started synchronously, so that the motor 231 drives the screw 232 to rotate, and the rotation of the screw 232 will drive the slider 233 and the tooth plate 24 to move synchronously. When the tooth plate 24 moves passively, it will move horizontally through the installation setting of the guide rod, thereby also synchronously driving the slider 233 to translate. When the screw 232 rotates, it will also synchronously drive the turntable 234 and the handle 235 to rotate. The rotating handle 235 slides in the hollow long plate 236, thereby driving the hollow long plate 236 and the vertical rod 237 to move synchronously, and the moving hollow long plate 236 will pass through the limit block 240 installed on the vertical rod 237 to achieve a horizontal movement effect, thereby driving the vertical cylinder rod 239 to move downward through the rubber card 238 on the vertical rod 237.

[0023] The cleaning structure includes a vertical cylinder rod 239, a horizontal plate ring 241 is fixedly connected to the vertical cylinder rod 239 near the top, and a plurality of brushes 242 are fixedly connected to the inner wall of the horizontal plate ring 241 in a surrounding manner, and each brush 242 can be intermittently fitted and slidably connected with the sampling head 12 and the plurality of dust inlet holes 13; The cleaning structure specifically includes a rectangular slot plate 244 fixedly connected to the outer wall on one side of the top of the chassis 21, a short rectangular slot 245 is opened through one end of the rectangular slot plate 244, and a rectangular slot 246 is opened through the other end of the rectangular slot plate 244. A T-shaped pressure plate 243 is fixedly connected to the outer wall of one end of the horizontal plate ring 241, and the T-shaped pressure plate 243 and the inner wall of the bottom end of the short rectangular slot 245 can be intermittently fitted and connected. Cross bars 247 are fixedly connected to the inner walls of both ends of the rectangular slot plate 244, and a wind wheel 248 is movably sleeved on the outer wall of the cross bar 247. Top plates 249 are fixedly connected to the outer walls on both sides of the wind wheel 248, and the outer walls of one end of the two top plates 249 can be intermittently fitted and slidably connected to the outer wall of the bottom end of the T-shaped pressure plate 243.

[0024] By adopting the above scheme: the downward moving vertical cylinder rod 239 will drive the horizontal plate ring 241 and multiple brushes 242 to move downward synchronously, and then the multiple dust inlet holes 13 can be briefly cleaned on the surface by multiple brushes 242, and the horizontal plate ring 241 driven to move downward will also synchronously drive the T-shaped pressure plate 243 to move downward and stick to the inner wall of one end of the short rectangular groove 245, and in windy weather, the wind will automatically drive the wind wheel 248 on the horizontal rod 247 to rotate, and the rotating wind wheel 248 will drive the top plates 249 on both sides to rotate synchronously, thereby the two rotating top plates 249 will hit and drive the T-shaped pressure plate 243 to move up and down reciprocatingly in the local area of ​​the short rectangular groove 245, and then drive the multiple brushes to move up and down reciprocatingly in the local area of ​​the multiple dust inlet holes 13, so as to continuously clean their surfaces.

[0025] The working principle and use process of the present invention are as follows: after manually screwing the sampling head 12 into the dust sampler 1, when the dust sampler 1 is started to perform dust sampling, the motor 231 on the chassis 21 can be started synchronously, so that the motor 231 drives the screw 232 to rotate, and the rotation of the screw 232 drives the slider 233 and the tooth plate 24 to move synchronously. When the tooth plate 24 is passively moved, it will move horizontally through the installation setting of the guide rod, thereby synchronously driving the slider 233 to translate, and the moving tooth plate 24 will contact and engage with the outer wall of the double-layer rotating plate 22. The teeth 2401 installed therein drive the double-layer rotating plate 22 to rotate, and the rotating double-layer rotating plate 22 drives the T-shaped shaft 28 and the square slot plate 27 to deviate synchronously, so that the square slot plate 27 can drive the pressing fence plate 26 to tilt at an angle in the double-layer rotating plate 22, gradually approaching the sampling head 12, until the rubber pressing plate 29 is driven to contact and press against the outer wall of the sampling head 12, thereby reinforcing it, helping the sampling head 12 to always maintain a stable state on the dust sampler 1, which is beneficial to the sampling effect of the sampling head 12 on dust, and can also increase the service life of the two; When the screw 232 rotates, it will also synchronously drive the turntable 234 and the handle 235 to rotate. The rotating handle 235 slides in the hollow long plate 236, thereby driving the hollow long plate 236 and the vertical rod 237 to move synchronously, and the moving hollow long plate 236 will pass through the limit block 240 installed on the vertical rod 237 to achieve a horizontal movement effect, thereby passing through the rubber card 238 on the vertical rod 237 to drive the vertical cylinder rod 239 to move downward, and the downward moving vertical cylinder rod 239 will drive the horizontal plate ring 241 and multiple brushes 242 to move downward synchronously, so that the multiple dust inlet holes 13 can be briefly cleaned on the surface through the multiple brushes 242, and the driven downward The moving horizontal plate ring 241 will also synchronously drive the T-shaped pressure plate 243 to move down and stick to the inner wall of one end of the short rectangular groove 245, and in windy weather, the wind will automatically drive the wind wheel 248 on the horizontal bar 247 to rotate, and the rotating wind wheel 248 will drive the top plates 249 on both sides to rotate synchronously, thereby the two rotating top plates 249 will hit and drive the T-shaped pressure plate 243 to move up and down reciprocatingly in the local area of ​​the short rectangular groove 245, and then drive multiple brushes to move up and down reciprocatingly in the local area of ​​multiple dust inlet holes 13, so as to continuously clean the surface thereof, thereby improving the efficiency of dust collection and sampling and ensuring the normal operation of the sampling work.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust sampling device for occupational health sampling, comprising a dust sampler (1), characterized in that: The bottom end of the dust sampler (1) can be tightly connected to a tripod (11), the top end of the dust sampler (1) can be threadedly connected to a sampling head (12), a plurality of dust inlet holes (13) are arranged around the sampling head (12), a reinforced sampling portion (2) is provided on the outer wall of the top end of the dust sampler (1), the reinforced sampling portion (2) includes a chassis (21) fixedly connected to the outer wall of the top end of the dust sampler (1), the chassis (21) is provided with a clamping structure capable of reinforcing and limiting the sampling head (12), a rotating structure with driving capability is also provided on one side of the top end of the chassis (21), and the rotating structure is provided with a cleaning structure capable of cleaning each of the dust inlet holes (13); The clamping structure comprises three T-shaped round rods (25), the bottom ends of the three T-shaped round rods (25) are fixedly connected to the top outer wall of the bottom plate (21), the three T-shaped round rods (25) are movably sleeved with a pressure plate (26), and one end of the outer wall of the three pressure plates (26) is fixedly connected to a rubber plate (29), and the other ends of the three rubber plates (29) can be intermittently and tightly connected to the outer wall of the sampling head (12); The cleaning structure comprises a vertical cylinder rod (239), the vertical cylinder rod (239) is fixedly connected to a horizontal plate ring (241) near the top, and a plurality of brushes (242) are fixedly connected to the inner wall of the horizontal plate ring (241) in a surrounding manner, and each of the brushes (242) can be intermittently slidably connected to the sampling head (12) and the plurality of dust inlet holes (13).

2. The dust sampling device for occupational health sampling according to claim 1 is characterized in that: The clamping structure specifically includes a double-layer rotating plate (22) which is rotatably connected to the top outer wall of the chassis (21), three partition plates (23) are fixedly connected in a surrounding manner in the double-layer rotating plate (22), and square groove plates (27) are also slidably connected to the three pressure railings (26).

3. The dust sampling device for occupational health sampling according to claim 2 is characterized in that: The outer walls of the three square groove plates (27) can be fitted and slidably connected to the inner wall of the double-layer rotating plate (22); the top outer walls of the three square groove plates (27) are fixedly connected with a T-shaped shaft (28); the three T-shaped shafts (28) are also connected to one end of the double-layer rotating plate (22) for through-connection and rotation; the outer wall of the double-layer rotating plate (22) is also specifically fixedly connected with a plurality of teeth (2401) in a surrounding manner.

4. The dust sampling device for occupational health sampling according to claim 3 is characterized in that: The rotating structure comprises a support plate (230) and a motor (231) fixedly connected to an outer wall at one end of the support plate (230); the motor (231) is specifically a model capable of forward and reverse rotation; a screw rod (232) is fixedly connected to the motor (231); a guide rod is provided below the screw rod (232); a slider (233) is threadedly connected to the screw rod (232); and the bottom end of the support plate (230) is fixedly connected to an outer wall at one side of the top end of the chassis (21).

5. The dust sampling device for occupational health sampling according to claim 4 is characterized in that: A toothed plate (24) is slidably connected to the guide rod, and the toothed plate (24) and the plurality of teeth (2401) can be intermittently meshed, an outer wall on one side of the top end of the toothed plate (24) and an outer wall on the bottom end of the slider (233) are fixedly connected, and one end of the guide rod and an outer wall on one end of the support plate (230) are fixedly connected.

6. The dust sampling device for occupational health sampling according to claim 5 is characterized in that: A rotating disk (234) is fixedly connected to one section of the rod body of the screw rod (232), a rotating handle (235) is fixedly connected to the outer wall of the side surface of one end of the rotating disk (234), a hollow long plate (236) is slidably connected to the rotating handle (235), and a vertical rod (237) is fixedly connected to the top end of the hollow long plate (236).

7. The dust sampling device for occupational health sampling according to claim 6 is characterized in that: A rubber card (238) is fixedly connected to the outer wall of the vertical rod (237) near the top end, and an annular groove that fits and engages with the rubber card (238) is opened in the inner wall of the vertical tube rod (239) near the bottom end. The outer wall of the vertical rod (237) and the bottom end of the vertical tube rod (239) are connected in a through-sliding manner, and the outer wall of the vertical tube rod (239) is connected in a through-sliding manner to a limiting block (240).

8. The dust sampling device for occupational health sampling according to claim 7 is characterized in that: The cleaning structure specifically includes a rectangular slot plate (244) fixedly connected to an outer wall on one side of the top end of the chassis (21), a short rectangular slot (245) being provided through one end of the rectangular slot plate (244), and a rectangular slot (246) being provided through the other end of the rectangular slot plate (244).

9. The dust sampling device for occupational health sampling according to claim 8, characterized in that: A T-shaped pressing plate (243) is fixedly connected to the outer wall of one end of the horizontal plate ring (241), and the T-shaped pressing plate (243) and the inner wall of the bottom end of the short rectangular groove (245) can be intermittently fitted and connected.

10. The dust sampling device for occupational health sampling according to claim 9, characterized in that: A cross bar (247) is fixedly connected to the inner walls at both ends of the rectangular slot plate (244), a wind wheel (248) is movably sleeved on the outer wall of the cross bar (247), and a top plate (249) is fixedly connected to the outer walls on both sides of the wind wheel (248), and the outer walls at one end of the two top plates (249) can be intermittently fitted and slidably connected to the outer wall of the bottom end of the T-shaped pressure plate (243).

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