A volatile organic compound waste gas collecting and detecting device for environment detection

Abstract

This invention relates to the field of waste gas detection technology, and more particularly to a volatile organic compound (VOC) waste gas collection and detection device for environmental monitoring. The device includes a mobile trolley with a rotating disk. The rotating disk is equipped with a telescopic, longitudinally swinging swing arm module. A waste gas collection device and a drilling device are installed at the outer end of the swing arm module. All components work together to achieve efficient detection. The mobile trolley replaces manually operated handheld equipment, ensuring the safety of testing personnel and reducing potential risks. The rotating disk and swing arm module work together to allow the device to flexibly adjust the detection angle and range, adapting to different terrains and waste gas emission locations. In particular, the telescopic design of the swing arm module reduces radial dimensions and overall length while ensuring precise and stable telescopic control, greatly improving the device's practicality. This device has broad application prospects; in the mining industry, it provides strong data support for mine environmental management, helping to optimize mining processes and reduce pollution emissions.

Description

Technical Field

[0001] This invention relates to the field of waste gas detection technology, and in particular to a volatile organic compound (VOC) waste gas collection and detection device for environmental monitoring. Background Technology

[0002] Waste gas is usually generated during mineral mining. The composition and emission volume of this waste gas vary depending on the type of mineral, mining method (open-pit mining, underground mining, etc.), and technological process.

[0003] Methane (CH): Commonly found in coal mining (gas), it is a volatile gas released during coal formation. It is flammable, explosive, and a greenhouse gas. Sulfides (such as SO₂, H₂S): Released during the mining of sulfur-containing minerals (such as iron sulfide ore and coal) through oxidation or reaction with water, potentially forming acid rain or irritating the respiratory tract. Nitrogen oxides (NOx): Generated during blasting when the high temperatures generated by the explosion of explosives cause nitrogen and oxygen in the air to react.

[0004] Dust and harmful gases (such as SO and NOx) diffuse into the atmosphere, potentially causing smog and acid rain, thus affecting air quality. Therefore, after mining operations, it is necessary to monitor the areas of the mine that generate waste gas. In areas where waste gas levels exceed standards, a multi-pronged approach is needed, including process optimization, equipment upgrades, pollution control, and management and control, to reduce the hazards caused by mining.

[0005] In existing mine waste gas collection, workers usually carry instruments into the mine shaft to collect the data. Before mining, some undeveloped mines need to detect the gas composition of the area. Moreover, undeveloped mines are more risky and prone to collapse, which could affect the safety of workers. Summary of the Invention

[0006] The purpose of this invention is to provide an environmental monitoring device for collecting and detecting volatile organic compounds (VOCs) in waste gas, addressing the shortcomings of existing technologies.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows:

[0008] An environmental monitoring device for collecting and detecting volatile organic compounds (VOCs) waste gas includes a mobile trolley, which is equipped with a rotating disk. The rotating disk is equipped with a telescopic and longitudinally swinging swing arm module. The waste gas collection device and a drilling device are installed at the outer end of the swing arm module.

[0009] The swing arm module has a longitudinally arranged fixed plate installed at its outer end. The exhaust gas collection device includes a collection mounting base installed on the fixed plate. The collection mounting base is provided with a first collection drive plate that can move longitudinally. The first collection drive plate is equipped with a first universal joint that can swing at multiple angles. A bottom connecting seat that can swing at multiple angles is installed at the bottom of the first universal joint. A collection pipe is installed at the bottom of the bottom connecting seat. The collection pipe includes a conveying pipe and an exhaust pipe installed at the outer end of the conveying pipe. The exhaust pipe can swing around the conveying pipe at multiple angles. The bottom of the bottom connecting seat is connected to the exhaust pipe.

[0010] The drilling device includes a drilling mounting base installed on a fixed plate. The drilling mounting base has a drilling mounting plate arranged laterally and a horizontal pressing device that drives the drilling mounting plate to move laterally. The drilling mounting plate is equipped with a drilling drive motor. The driving end of the drilling drive motor is equipped with a drilling shaft. The outer end of the drilling shaft is equipped with a drill bit module. The outer end of the drilling mounting plate is equipped with a guide plate. Multiple elastic contact arms that can expand outward are arranged around the guide plate. The guide plate is formed with a drilling drive hole for the drilling shaft to move through. The drilling mounting plate is equipped with multiple elastic guide shafts. The guide plate is formed with elastic guide holes for the elastic guide shafts to move through.

[0011] The swing arm module is equipped with a pipe installation structure along its route. The pipe installation structure includes a hook seat, and a guide ring is installed at the bottom of the hook seat. The conveying pipe can pass through multiple guide rings in sequence. The moving trolley is equipped with a waste gas storage box for collecting waste gas, and the inner end of the conveying pipe is connected to the waste gas storage box.

[0012] The beneficial effects of this invention are:

[0013] 1. Employing exhaust gas collection and drilling devices, the components work collaboratively for efficient detection. A mobile trolley replaces manual handheld equipment, ensuring the safety of inspection personnel and reducing potential risks. The rotating disc and swing arm module work together to allow for flexible adjustment of the detection angle and range, adapting to different terrains and exhaust emission locations. In particular, the swing arm module features a telescopic design, reducing radial dimensions and overall length while ensuring precise and stable telescopic control, greatly enhancing the device's practicality.

[0014] 2. The exhaust gas collection device is one of the core innovations of this equipment. Through a clever combination of the first universal joint, the bottom connecting seat, and the collection pipe, it endows the extraction pipe with multi-angle swing functionality. This not only allows for precise targeting of exhaust gas leakage areas, effectively avoiding missed sampling in dead zones, but also dynamically tracks the mainstream direction when exhaust gas emissions are unstable, ensuring the representativeness of the collected samples and significantly improving the accuracy of the detection data. Simultaneously, the exhaust gas collection device is also equipped with a first drive component and a swing drive module, enabling precise adjustment of the collection pipe in height, horizontal direction, and multiple angles (front, back, left, and right), further enhancing the flexibility and accuracy of the collection.

[0015] 3. This device has a very broad application prospect. In the mining industry, it can detect the composition of exhaust gases in real time and accurately, providing strong data support for mine environmental management, helping to optimize mining processes and reduce pollution emissions. In industrial parks, it can effectively monitor volatile organic compound (VOC) emissions from factories, ensuring the air quality of the surrounding environment and protecting residents' health. With increasingly stringent environmental protection requirements, this innovative exhaust gas collection and detection device is expected to be applied in more scenarios, promoting the continuous development of environmental monitoring technology and making an important contribution to global environmental protection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the exhaust gas collection and detection device.

[0017] Figure 2 This is a schematic diagram of the exhaust gas collection and detection device from the front view.

[0018] Figure 3 This is a cross-sectional structural diagram showing the connection between the swing arm module and the rotating disk.

[0019] Figure 4 This is a schematic diagram of the waste gas collection device.

[0020] Figure 5 This is a schematic diagram of the connection between the first and second universal joints.

[0021] Figure 6 This is a schematic diagram showing the connection between the first acquisition driver board and the second acquisition driver board.

[0022] Figure 7 This is a structural diagram of a square opening and a mesh module.

[0023] Figure 8 This is a cross-sectional structural diagram showing the connection between the frame and the mesh module.

[0024] Figure 9 This is a schematic diagram of the drilling device.

[0025] Figure 10 This is a schematic diagram of the drilling device from the front view.

[0026] The reference numerals in the figures include:

[0027] 1-Mobile trolley, 11-Rotating disc, 111-Counterweight, 112-Supporting hydraulic cylinder, 113-Hook seat, 114-Guide ring, 115-Exhaust gas storage box, 116-Exhaust gas storage chamber, 117-Intake pipe,

[0028] 118 - Exhaust pipe, 119 - Winding reel

[0029] 12-Swing arm module,

[0030] 121-First drive arm, 122-Hollow trough, 123-Second drive arm, 124-Fixed plate,

[0031] 125-Hydraulic module, 126-Swing arm guide rail, 127-Swing arm sliding seat, 128-Tail-end air pump, 2-Exhaust gas collection device, 21-Collection mounting base.

[0032] 210 - First acquisition drive board, 211 - First longitudinal track, 212 - First sliding plate,

[0033] 213 - First electric actuator, 214 - First transverse plate, 215 - First servo motor

[0034] 216-First drive shaft, 217-First universal joint, 218-Second universal joint, 219-Bottom connector, 22-First cross-shaped module, 221-First top slot, 222-First bottom slot

[0035] 223 - Second cross module, 224 - Second top slot, 225 - Second bottom slot

[0036] 226 - Axial hollow hole, 227 - Axial guide groove, 228 - Axial sliding block

[0037] 23-Second acquisition drive board, 231-Horizontal guide plate, 232-Horizontal guide groove,

[0038] 233-Second sliding plate, 234-Bottom connecting column, 235-Bottom movable hole, 236-Conveying pipe,

[0039] 237 - Air extraction pipe, 238 - Horizontal electric actuator, 239 - Head-end air extraction pump

[0040] 24-Oscillation drive module, 241-First drive gear, 242-First semi-circular gear,

[0041] 243 - First gear drive shaft, 244 - First transmission gear, 245 - Drive swing arm,

[0042] 246 - Second gear drive shaft, 247 - Second semi-circular gear, 248 - Oscillating drive motor

[0043] 3-Square opening, 31-Barrier module, 311-First barrier, 312-Second barrier, 313-Frame, 314-Diagonal extension plate, 315-Extension track, 316-Diagonal sliding seat

[0044] 32-Moving drive structure, 321-Adjusting threaded hole, 322-Adjusting threaded post, 323-Adjusting sliding groove, 324-Guide inclined surface, 325-Adjusting compression spring, 326-Diagonal adjusting seat.

[0045] 4-Drilling device, 41-Drilling fixing base, 411-Drilling mounting plate, 412-Horizontal pressure device,

[0046] 413-Drilling drive motor, 414-Drilling shaft, 415-Drill bit module, 416-Guide plate,

[0047] 417 - Elastic guide shaft, 418 - Elastic guide hole, 419 - Guide compression spring

[0048] 42-Elastic contact arm, 421-First contact arm, 422-Second contact arm, 423-Elastic groove

[0049] 424 - Elastic compression spring, 425 - Contact seat, 426 - Friction block, 427 - Drilling drive hole. Detailed Implementation

[0050] The present invention will now be described in detail with reference to the accompanying drawings.

[0051] like Figure 1-10 As shown.

[0052] An environmental monitoring device for collecting and detecting volatile organic compounds (VOCs) includes a mobile trolley 1, which has a vehicle body and multiple counterweights 111 that provide gravity stability to the vehicle.

[0053] Specifically, the mobile vehicle 1 is equipped with a Bluetooth module and a control board. Staff can use a handheld remote control to move the mobile vehicle 1, allowing staff to stay away from the mine and ensuring the safety of the data collection.

[0054] The mobile trolley 1 is equipped with a rotating disk 11, which is driven by an HKS series spiral swing cylinder. The rotating disk 11 is equipped with a telescopic and longitudinally swinging swing arm module 12. The rotating disk 11 is equipped with a support hydraulic cylinder 112 that supports the swing arm module 12. The drive end of the support hydraulic cylinder 112 extends out, causing the swing arm module 12 to swing upward and form an angle with the mobile trolley 1.

[0055] The swing arm module 12 is equipped with an exhaust gas collection device 2 and a drilling device 4 at its outer end. The mobile trolley 1 can move to the area where mineral resources need to be explored. The mobile trolley 1 can replace the manual exhaust gas collection device 2, which not only reduces the health hazards caused by exhaust gases, but also reduces the risk of life and health from potential mine collapses, thus ensuring the safety and stability of the collection. The rotating disk 11 is driven by hydraulic power, i.e., a hydraulic cylinder, and rotates on the mobile trolley 1, allowing the swing arm module 12 to face multiple directions and collect data from areas in different directions.

[0056] Specifically, the swing arm module 12 includes a first drive arm 121 longitudinally oscillatingly mounted on the rotating disk 11. The first drive arm 121 has a hollow groove 122 formed along its length. A second drive arm 123 is slidably mounted in the hollow groove 122. A hydraulic module 125 is arranged within the hollow groove 122, driving the second drive arm 123 to move along the length of the hollow groove 122. The hydraulic module 125 includes a first hydraulic cylinder mounted at the bottom of the hollow groove 122, a second hydraulic cylinder mounted at the drive end of the first hydraulic cylinder, and a third hydraulic cylinder mounted at the drive end of the second hydraulic cylinder. The drive end of the third hydraulic cylinder is connected to the end of the second drive arm 123. This multi-stage hydraulic cylinder design, consisting of multiple nested cylinders of different diameters, eliminates the need for multiple independent hydraulic cylinders, significantly reducing the radial dimension and overall length of the swing arm module 12. The pistons of the multi-stage cylinders extend or retract sequentially in descending order of diameter. The hydraulic system precisely controls the action sequence of each stage cylinder, avoiding impact and vibration during extension and retraction.

[0057] In addition, a swing arm guide rail 126 is arranged along the length of the hollow groove 122, and a swing arm sliding seat 127 that slides with the swing arm guide rail 126 is provided along the second drive arm 123. Under the drive of the multi-stage hydraulic cylinder, the second drive arm 123 can move stably and accurately in the hollow groove 122 to realize the overall length extension and retraction of the swing arm module 12.

[0058] The swing arm module 12 has a longitudinally arranged fixed plate 124 installed at its outer end. The exhaust gas collection device 2 includes a collection mounting base 21 installed on the fixed plate 124. The collection mounting base 21 is provided with a first collection drive plate 210 that can move longitudinally. The first collection drive plate 210 is equipped with a first universal joint 217 that can swing at multiple angles. The bottom of the first universal joint 217 is equipped with a bottom connecting seat 219 that can swing at multiple angles. The bottom of the bottom connecting seat 219 is equipped with a collection pipe. The collection pipe includes a conveying pipe 236 and an exhaust pipe 237 installed at the outer end of the conveying pipe 236. The exhaust pipe 237 can swing around the conveying pipe 236 at multiple angles. The bottom of the bottom connecting seat 219 is connected to the exhaust pipe 237.

[0059] During data collection, the first universal joint 217 located on the first acquisition drive plate 210 can swing at multiple angles, and the bottom connecting seat 219 can also swing around the first universal joint 217 at multiple angles simultaneously. Therefore, the extraction pipe 237 installed at the head end of the delivery pipe 236 can swing at multiple angles under the drive of the bottom connecting seat 219, further fine-tuning the orientation of the opening, making the position more accurate when collecting exhaust gas. Moreover, due to the use of the first universal joint 217, its angle diversity is further improved, covering airflow in different directions: the extraction pipe 237 can rotate horizontally and swing up and down, flexibly aligning with different directions of the exhaust gas leak, avoiding airflow dead zones caused by fixed angles. When exhaust gas emissions are unstable, such as when airflow is turbulent, swinging the extraction pipe 237 can dynamically track the mainstream direction, ensuring that representative samples with average concentrations are collected, avoiding single-angle sampling deviations.

[0060] When collecting exhaust gas from mines, the vertical swing function allows the pipe head to be adjusted up and down to adapt to the exhaust gas content at different altitudes, eliminating the need for frequent replacement of sampling equipment.

[0061] The mobile trolley 1 is equipped with an exhaust gas storage box 115 for collecting exhaust gas. The inner end of the conveying pipe 236 is connected to the exhaust gas storage box 115. The exhaust gas storage box 115 is provided with multiple exhaust gas storage chambers 116. Each exhaust gas storage chamber 116 is equipped with an air inlet pipe 117 for introducing exhaust gas and an exhaust pipe 118 for discharging exhaust gas. Each air inlet pipe 117 and exhaust pipe 118 is equipped with a valve to prevent different exhaust gases from mixing and affecting the detection. Multiple ventilation pipes are arranged inside the exhaust gas storage box 115. One end of each ventilation pipe is connected to each air inlet pipe 117, and the other end of each ventilation pipe is connected to the tail end of the conveying pipe 236, so that the collected exhaust gas can be introduced into different exhaust gas storage chambers 116. For example, exhaust gas collected at different altitudes can be introduced into different exhaust gas storage chambers 116, and exhaust gas from different areas can be detected and analyzed one by one.

[0062] An exhaust gas pump 128 is installed outside the exhaust gas storage box 115. The exhaust gas pump 128 can draw the gas from the conveying pipe 236 into the exhaust gas storage box 115, prevent the exhaust gas from stagnating in the conveying pipe 236, improve the flow of the gas, and quickly classify and store the collected exhaust gas.

[0063] A gas analyzer is also installed outside the exhaust gas storage tank 115. The gas analyzer has a gas inlet, which can be aligned with the exhaust pipe 118 to detect the exhaust gas composition in different exhaust gas storage chambers 116 one by one, achieving diversified detection without transporting the gas back to the laboratory for detection and analysis.

[0064] The head of the conveying pipe 236 is also equipped with a head-end air pump 239. The head-end cylinder can guide the gas in the air extraction pipe 237 to be quickly drawn into the conveying pipe 236. Together with the tail-end air pump 128 at the tail end of the conveying pipe 236, the gas can be quickly collected and transported.

[0065] Since the swing arm module 12 is telescopic and has a variable length, the conveying pipe 236 needs to change accordingly to match the length of the swing arm module 12. To address this, the swing arm module 12 has a pipe mounting structure along its length, including a hook seat 113. A guide ring 114 is installed at the bottom of the hook seat 113, through which the conveying pipe 236 can pass sequentially. Adjacent guide rings 114 are spaced apart. The rotating disk 11 is equipped with a winding disk 119, which rotates under the drive of a motor. The inner end of the conveying pipe 236 is wound around the winding disk 119. When the swing arm module 12 retracts and shortens, the winding disk 119 rotates to wind the conveying pipe 236, preventing it from falling to the ground. Conversely, when the swing arm module 12 unfolds and lengthens, the winding disk 119 rotates in reverse to lead out the conveying pipe 236, preventing it from becoming too taut and breaking, thus accommodating the length extension and retraction of the swing arm module 12. Ensure stable transport of exhaust gas in pipeline 236.

[0066] The exhaust gas collection device 2 also includes a first drive assembly disposed on the collection mounting base 21. The first drive assembly includes a first longitudinal rail 211 arranged along the longitudinal direction of the collection mounting base 21. A first sliding plate 212 is slidably mounted on the first longitudinal rail 211. A first electric push rod 213 is arranged longitudinally on the collection mounting base 21. The drive end of the first electric push rod 213 is connected to the first sliding plate 212. The bottom of the first sliding plate 212 is connected to the first collection drive plate 210.

[0067] In this embodiment, when it is necessary to adjust the height of the air extraction pipe 237, the first drive component works, the first electric push rod 213 drives the first sliding plate 212, which is slidably mounted on the first longitudinal track 211, to move up and down, and the first acquisition drive plate 210 connected to the first sliding plate 212 moves up and down to achieve height adjustment.

[0068] A first drive shaft 216 arranged longitudinally is mounted on the top of the first acquisition drive plate 210, and the first drive shaft 216 is connected to a first universal joint 217. The first universal joint 217 includes a first cross module 22 mounted on the top, a first bottom groove 222 is formed on the top of the first universal joint 217, and a first top groove 221 is formed on the bottom of the first drive shaft 216; the front and rear ends of the first cross module 22 are rotatably connected to the first top groove 221, and the left and right ends of the first cross module 22 are rotatably connected to the first bottom groove 222; the first universal joint 217 can swing longitudinally back and forth and left and right around the first cross module 22; the first universal joint 217 has an axial hollow hole 226 formed along its length, and a second universal joint 218 is slidably mounted on the axial hollow hole 226; a second cross module 223 is provided at the bottom of the second universal joint 218, and the top of the bottom connecting seat 219 is rotatably connected to the second cross module 223. In this embodiment, under the action of the first cross module 22, the first drive shaft 216 can rotate and cooperate with the top of the first universal shaft 217, that is, the first universal shaft 217 can swing back and forth around the first cross module 22, and swing left and right around the first cross module 22, so as to realize the swing in four directions.

[0069] A second universal joint 218 is slidably mounted on the bottom of the first universal joint 217. A second top groove 224 is formed on the bottom of the second universal joint 218. A second bottom groove 225 is formed on the top of the bottom connecting seat 219. The front and rear ends of the second cross module 223 are rotatably connected to the second bottom groove 225; the left and right ends of the second cross module 223 are rotatably connected to the second top groove 224. The bottom connecting seat 219 can swing longitudinally back and forth and left and right around the second cross module 223. In this embodiment, similar to the principle of the first cross module 22, the bottom connecting seat 219 can swing left and right around the second cross module 223 and swing forward and backward around the second cross module 223, achieving swinging in four directions. The exhaust pipe 237 installed at the bottom of the bottom connecting seat 219 can swing in multiple directions, further improving the flexibility of the swing.

[0070] Specifically, a second acquisition drive plate 23 is provided below the first acquisition drive plate 210. The second acquisition drive plate 23 can swing back and forth around the first acquisition drive plate 210. A horizontally arranged guide plate 231 is installed at the bottom of the second acquisition drive plate 23. A horizontal guide groove 232 is formed along the length direction of the horizontal guide plate 231. A second sliding plate 233 is slidably installed in the horizontal guide groove 232. A bottom connecting post 234 is installed at the bottom of the second sliding plate 233. The bottom connecting post 234 is connected to the air extraction pipe 237. The bottom of the bottom connecting seat 219 is connected to the second sliding plate 233. In this embodiment, since the second acquisition drive plate 23 can swing back and forth around the first acquisition drive plate 210, the air extraction pipe 237 installed on the second acquisition drive plate 23 can swing back and forth. The opening of the air extraction pipe 237 can face different angles, which can be determined by the angle of the second acquisition drive plate 23. Therefore, multi-directional angle adjustment can be achieved. In addition, the transverse guide groove 232 of the transverse guide plate 231 allows the second sliding plate 233 to move. Since the bottom of the second sliding plate 233 is connected to the air extraction pipe 237 through the bottom connecting column 234, the air extraction pipe 237 can swing left and right when the second sliding plate 233 moves along the transverse guide groove 232, so as to further realize multi-directional angle adjustment. The angle of swing in the left and right directions can be related to the moving position of the second sliding plate 233.

[0071] Preferably, a transverse electric push rod 238 is provided on one side of the transverse guide plate 231. The driving end of the transverse electric push rod 238 is connected to the second sliding plate 233, which can drive the second sliding plate 233 to move along the transverse guide groove 232, thereby adjusting the left and right swing angle of the exhaust pipe 237.

[0072] The first drive shaft 216 and the first universal joint 217 are rotatably connected through the first cross module 22, and the second universal joint 218 and the bottom connecting seat 219 are rotatably connected through the second cross module 223. With the cooperation of the two universal modules, the air extraction pipe 237 located on the second acquisition drive plate 23 can swing more left and right, and swing more back and forth, which can further improve the accuracy and achieve precise multi-directional adjustment with multiple orientation angles.

[0073] Specifically, the first acquisition drive plate 210 is provided with a swing drive module 24 that drives the second acquisition drive plate 23 to swing back and forth. The swing drive module 24 includes a first drive gear 241 disposed on the back of the first acquisition drive plate 210; the first acquisition drive plate 210 is equipped with a first semi-circular gear 242 and a first gear drive shaft 243 coaxially connected to the first semi-circular gear 242; a first transmission gear 244 fixed to the first gear drive shaft 243 is mounted on the back of the first acquisition drive plate 210, and the first transmission gear 244 meshes with the first drive gear 241 for transmission; the first semi-circular gear 242 is driven by the first transmission gear 244 mounted on the first gear drive shaft 243 meshing with the first drive gear 241 of the first acquisition drive plate 210, thereby realizing the rotation of the first semi-circular gear 242 and the synchronous rotation of the first gear drive shaft 243.

[0074] A drive arm 245 is mounted on the first drive gear shaft 243, and a second gear drive shaft 246 is mounted on the second acquisition drive plate 23. The second gear drive shaft 246 is equipped with a second semi-circular gear 247 that meshes with the first semi-circular gear 242. The bottom of the drive arm 245 is connected to the second gear drive shaft 246. When the first gear drive shaft 243 rotates, the second gear drive shaft 246 rotates synchronously under the action of the drive arm 245. Simultaneously, the second semi-circular gear 247 meshes with the first semi-circular gear 242, causing the second acquisition drive plate 23 to rotate around the second gear drive shaft 246, achieving a back-and-forth swing. Under the action of the drive arm 245, the first semi-circular gear 242 and the second semi-circular gear 247 always maintain a meshed transmission state.

[0075] Preferably, a first horizontal plate 214 is mounted on the top of the first sliding plate 212, and a first servo motor 215 is mounted on the first horizontal plate 214. A first drive shaft 216 is mounted on the drive end of the first servo motor 215. A second sliding plate 233, which is slidably mounted on the horizontal guide groove 232, is formed with a bottom movable hole 235. The bottom movable hole 235 allows the bottom connecting post 234 to rotate. The top of the bottom connecting post 234 is connected to the bottom connecting seat 219. Therefore, when the drive end of the first servo motor 215 rotates, the first drive shaft 216 rotates, which can synchronously drive the first universal joint 217, the second universal joint 218, the bottom connecting seat 219, and the bottom connecting post 234 to rotate synchronously, so that the air extraction pipe 237 connected to the bottom connecting post 234 can rotate horizontally. Furthermore, the direction of the pipe opening can be further adjusted at multiple angles.

[0076] Preferably, when the first semi-circular gear 242 and the second semi-circular gear 247 mesh, the second acquisition drive plate 23 and the first acquisition drive plate 210 swing to form an included angle, at which time the distance between the second acquisition drive plate 23 and the first acquisition drive plate 210 will change; in response, the first universal shaft 217 is formed with an axial guide groove 227 along the axial direction, the axial guide groove 227 is connected to the axial hollow hole 226, and the outer wall of the second universal shaft 218 has an axial sliding block 228 that slides with the axial guide groove 227; the first universal shaft 217 and the second universal shaft 218 can slide with each other, and the second universal shaft 218 slides with the axial guide groove 227 of the first universal shaft 217 through the axial sliding block 228 to adjust the overall length; and under the limiting action of the axial guide groove 227, when the first universal shaft 217 rotates, the second universal shaft 218 rotates synchronously to ensure the consistency of rotation.

[0077] When the first drive shaft 216 rotates, the first universal joint 217 rotates synchronously under the connection of the first cross module 22. When the second universal joint 218 rotates synchronously, the bottom connecting seat 219 rotates synchronously under the connection of the second cross module 223.

[0078] Preferably, the back of the first acquisition drive board 210 is provided with a swing drive motor 248 that is connected to the first drive gear 241. The swing drive motor 248 is a servo motor. Under the action of the swing drive motor 248, the first drive gear 241 can rotate to drive the first semi-circular gear 242 to rotate, thereby realizing the meshing transmission with the second semi-circular gear 247.

[0079] It should be noted that the acquisition mounting base 21 is equipped with a battery pack, which can power the servo motor and the swing drive motor 248 to ensure the stability of multi-directional adjustment.

[0080] The extraction pipe 237 is provided with a square opening 3, and a baffle module 31 is provided in the square opening 3. The baffle module 31 includes a first baffle 311 and a second baffle 312 with the same mesh area, wherein the second baffle 312 is attached to the surface of the first baffle 311. The baffle module 31 is provided with a mesh adjustment structure to adjust the mesh area. In this embodiment, the mesh area can be flexibly adjusted, which can effectively block impurities, adapt to the concentration and flow rate of exhaust gas, and adaptively adjust the mesh size according to the size of impurity particles, ensuring the smoothness and stability of the collection process.

[0081] The square opening 3 for air extraction is provided with a frame 313 for installing the first baffle 311. The first baffle 311 is fixedly installed on the frame 313. The two opposite corners of the second baffle 312 are provided with outwardly extending diagonal extension plates 314. The two opposite corners of the frame 313 are provided with extension rails 315. The diagonal extension plates 314 are provided with diagonal sliding seats 316 that slide with the extension rails 315. The frame 313 is provided with a moving drive structure 32 that drives the diagonal sliding seats 316 to move along the extension rails 315. The second baffle 312 moves along the diagonal of the first baffle 311 and slides along the extension track 315 of the frame 313 via the diagonal sliding seat 316 of the diagonal extension plate 314. The mesh of the first baffle 311 will intersect with the mesh of the second baffle 312. At this time, the intersecting mesh reduces the overall mesh diameter and the mesh area, thereby adjusting the mesh size. When the meshes of the first baffle 311 and the second baffle 312 are coaxially aligned, the mesh area is at its maximum.

[0082] By adopting the above scheme, the first baffle 311 and the second baffle 312 can intercept impurities in the exhaust gas, prevent larger particles of impurities from entering the collection pipe, and avoid impurities from damaging subsequent detection equipment or affecting the accuracy of detection results.

[0083] When the exhaust gas concentration is high, the second baffle 312 can be adjusted by moving the drive structure 32 to move along the diagonal of the first baffle 311, so that the meshes of the first baffle 311 and the second baffle 312 are staggered, reducing the mesh area and the amount of exhaust gas entering the collection pipe per unit time. This prevents the collection device from being damaged or its detection accuracy from being affected by excessive exhaust gas concentration. When the exhaust gas flow rate is large, the mesh area can also be adjusted in a similar way to ensure that the collection process is stable and that the collection device will not malfunction due to excessive exhaust gas flow rate.

[0084] If the impurity particles in the exhaust gas are large, the mesh area can be reduced to more effectively block the impurities; if the impurity particles are small, the mesh area can be appropriately increased to improve the exhaust gas collection efficiency while ensuring the blocking of impurities.

[0085] Preferably, the moving drive structure 32 includes an adjusting threaded hole 321 located at one corner of the frame 313, an adjusting threaded post 322 with a spiral lifting mechanism installed in the adjusting threaded hole 321, and an adjusting drive block installed at the bottom of the adjusting threaded post 322; the frame 313 is formed with a concave adjusting sliding groove 323, one end of the adjusting sliding groove 323 is connected to the adjusting threaded hole 321, an extension track 315 is arranged in the adjusting sliding groove 323, a diagonal adjusting seat 326 is slidably installed in the adjusting sliding groove 323, the top of the diagonal adjusting seat 326 is connected to the diagonal extension plate 314, and a guide slope 324 is formed on the side of the diagonal adjusting seat 326 near the adjusting threaded hole 321; an adjusting compression spring 325 is provided in the adjusting sliding groove 323 to drive the diagonal adjusting seat 326 closer to the adjusting threaded hole 321. Initially, the adjusting threaded column 322 retracts and rises within the adjusting threaded hole 321. At this time, the diagonal adjusting seat 326 located in the adjusting sliding groove 323 approaches the adjusting threaded hole 321 under the elastic drive of the adjusting compression spring 325. The meshes of the first baffle 311 and the second baffle 312 are coaxially aligned, maximizing the mesh area. To reduce the mesh area, the adjusting threaded column 322 is rotated, and the adjusting threaded column 322 moves downward continuously. After contacting the guide slope 324 of the diagonal adjusting seat 326, the diagonal adjusting seat 326 moves inward along the adjusting sliding groove 323, thereby driving the second baffle 312 to move on the surface of the first baffle 311. The meshes of the first baffle 311 and the second baffle 312 intersect. At this time, the intersecting meshes reduce the overall mesh diameter and the mesh area, thus achieving mesh size adjustment.

[0086] The entire mobile drive structure 32 is integrated on the frame 313 of the square opening 3 of the air extraction pipe 237. The layout of components such as the adjusting threaded hole 321, adjusting sliding groove 323, and extension track 315 is compact and reasonable, making full use of the space of the frame 313 without adding too many external structures, making the overall structure of the device simpler and realizing complex functions in a limited space, which is conducive to the installation and use of the device in different environments.

[0087] Preferably, besides adjusting the mesh area by alternating the first and second baffles, the mesh area can also be adjusted using deformable materials such as shape memory alloys or smart polymers. Taking shape memory alloys as an example, the principle of thermal expansion and contraction is utilized; applying a specific temperature causes the alloy to change shape, thus altering the mesh size. When the exhaust gas concentration is high, increasing the baffle temperature causes the alloy to deform, reducing the mesh size and decreasing the air intake; conversely, when the concentration is low, decreasing the temperature enlarges the mesh size, increasing the air intake. This method enables precise and automated adjustment with a rapid response.

[0088] When collecting gas from the mine, some small openings become blocked, so the area needs to be drilled. After drilling, the gas and fine particles inside are collected. Therefore, a drilling device 4 is installed on the outer end of the swing arm module 12. The drilling device 4 includes a drilling mounting base 41 mounted on a fixed plate 124. The drilling mounting base 41 has a drilling mounting plate 411 arranged laterally and a horizontal pressing device 412 that drives the drilling mounting plate 411 to move laterally. The drilling mounting plate 411 is equipped with a drilling drive motor 413. The driving end of the drilling drive motor 413 is equipped with a drilling shaft 414. The outer end of the drilling shaft 414 is equipped with a drill bit module 415. The outer end of the drilling mounting plate 411 is equipped with a guide plate 416. The periphery of the guide plate 416 is arranged with multiple elastic contact arms 42 that can be extended outward. The guide plate 416 is formed with a drilling drive hole 427 through which the drilling shaft 414 moves. The drilling mounting plate 411 is equipped with multiple elastic guide shafts 417. The guide plate 416 is formed with elastic guide holes 418 through which the elastic guide shafts 417 move. The elastic guide shafts 417 are fitted with guide compression springs 419, which can elastically spring the drilling mounting plate 411 away.

[0089] During drilling, the elastic contact arm 42 installed on the guide plate 416 will continuously extend, and the outer end of the elastic contact arm 42 will contact the mountain wall of the mine to achieve initial positioning. This reduces the possibility of displacement during drilling. After the drill bit module 415 installed on the drilling shaft 414 contacts the mountain wall of the mine, the multiple elastic contact arms 42 will make initial positioning by frictional contact with the mountain wall of the mine. The drill bit module 415 of the drilling shaft 414 can drill more accurately and is less prone to displacement, ensuring the accuracy of drilling. During drilling, driven by the horizontal pressure device 412, the drilling mounting plate 411 will continuously move closer to the guide plate 416, that is, the drill bit module 415 can also continuously drill into the hole.

[0090] Preferably, the horizontal pressure device 412 is a hydraulic cylinder installed on the fixed plate 124. When drilling, the driving end of the hydraulic cylinder extends and drives the drilling mounting plate 411 to continuously approach the guide plate 416, ensuring that the drill bit module 415 can continuously drill into the hole.

[0091] Furthermore, during drilling, the mine wall may be uneven, with a slope. To ensure that the drill bit module 415 can drill horizontally, the drilling device 4 also includes an elastic contact arm 42, including a first contact arm 421 hinged to the edge of the guide plate 416. The first contact arm 421 is rotatably connected to the guide plate 416 via a hinge shaft and a hinge hole. The hinge shaft is fitted with a torsion spring, which can drive the first contact arm 421 to rotate elastically. When the first contact arm 421 is not subjected to external force, it will elastically swing back. The first contact arm 421 has an elastic groove 423 formed along its length. A second contact arm 422 is slidably installed in the elastic groove 423. An elastic compression spring 424 is provided in the elastic groove 423 to drive the second contact arm 422 to pop outward. A contact seat 425 is installed at the outer end of the second contact arm 422, and a friction block 426 is installed at the outer end of the contact seat 425. When multiple elastic contact arms 42 contact the mountain wall, depending on the slope, the second contact arms 422 of some elastic contact arms 42 can pop outward under the elastic drive of the elastic compression spring 424, increasing or shortening the overall length. This allows the friction blocks 426 of the second contact arms 422 to contact the mountain wall. With multiple elastic contact arms 42 in contact with the mountain wall, the friction force is greatly increased, ensuring that the drill bit module 415 can drill horizontally. The special structure of the elastic contact arms 42 can automatically adjust according to the slope of the mountain wall, ensuring that the drill bit module 415 drills horizontally, providing a reliable means for collecting exhaust gas samples from enclosed areas.

[0092] This invention employs an exhaust gas collection device 2 and a drilling device 4, with each component working in concert to achieve efficient detection. A mobile trolley 1 replaces manually operated handheld equipment, ensuring the safety of inspection personnel and reducing potential risks. The rotating disk 11, in conjunction with the swing arm module 12, allows the device to flexibly adjust the detection angle and range, adapting to different terrains and exhaust gas emission locations. In particular, the swing arm module 12 utilizes a multi-stage hydraulic cylinder design, reducing radial dimensions and overall length while ensuring precise and stable telescopic control, greatly enhancing the device's practicality.

[0093] The exhaust gas collection device 2 is one of the core innovations of this equipment. Through a clever combination of a universal joint, a bottom connecting seat 219, and the collection pipe, it endows the extraction pipe 237 with multi-angle swing functionality. This not only allows for precise alignment with exhaust gas leaks, effectively avoiding missed sampling in dead zones, but also enables dynamic tracking of the mainstream direction when exhaust gas emissions are unstable, ensuring the representativeness of the collected samples and significantly improving the accuracy of the detection data. Simultaneously, the exhaust gas collection device 2 is also equipped with a first drive component and a swing drive module 24, enabling precise adjustment of the collection pipe in height, horizontal direction, and multiple angles (front, back, left, and right), further enhancing the flexibility and accuracy of the collection.

[0094] This device has a wide range of applications. In the mining industry, it can accurately detect the composition of exhaust gases in real time, providing strong data support for mine environmental management and helping to optimize mining processes and reduce pollution emissions. In industrial parks, it can effectively monitor volatile organic compound (VOC) emissions from factories, ensuring air quality in the surrounding environment and protecting residents' health. With increasingly stringent environmental protection requirements, this innovative exhaust gas collection and detection device is expected to be applied in more scenarios, promoting the continuous development of environmental monitoring technology and making a significant contribution to global environmental protection.

[0095] In summary, the present invention possesses the aforementioned excellent characteristics, thereby enhancing its performance in use compared to previous technologies and making it a highly practical product. The above description is merely a preferred embodiment of the present invention. For those skilled in the art, based on the concept of the present invention, there will be changes in specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A volatile organic compound (VOC) waste gas collection and detection device for environmental monitoring, comprising a mobile trolley, the mobile trolley being equipped with a rotatable rotating disk, and the rotating disk being equipped with a telescopic and longitudinally swinging swing arm module, characterized in that: The outer end of the swing arm module is equipped with an exhaust gas collection device and a drilling device. The swing arm module has a longitudinally arranged fixed plate installed at its outer end. The exhaust gas collection device includes a collection mounting base installed on the fixed plate. The collection mounting base is provided with a first collection drive plate that can move longitudinally. The first collection drive plate is equipped with a first universal joint that can swing at multiple angles. A bottom connecting seat that can swing at multiple angles is installed at the bottom of the first universal joint. A collection pipe is installed at the bottom of the bottom connecting seat. The collection pipe includes a conveying pipe and an exhaust pipe installed at the outer end of the conveying pipe. The exhaust pipe can swing around the conveying pipe at multiple angles. The bottom of the bottom connecting seat is connected to the exhaust pipe. The drilling device includes a drilling mounting base installed on a fixed plate. The drilling mounting base has a drilling mounting plate arranged laterally and a horizontal pressing device that drives the drilling mounting plate to move laterally. The drilling mounting plate is equipped with a drilling drive motor. The driving end of the drilling drive motor is equipped with a drilling shaft. The outer end of the drilling shaft is equipped with a drill bit module. The outer end of the drilling mounting plate is equipped with a guide plate. Multiple elastic contact arms that can expand outward are arranged around the guide plate. The guide plate is formed with a drilling drive hole for the drilling shaft to move through. The drilling mounting plate is equipped with multiple elastic guide shafts. The guide plate is formed with elastic guide holes for the elastic guide shafts to move through. The swing arm module is equipped with a pipe installation structure along the way. The pipe installation structure includes a hook seat, and a guide ring is installed at the bottom of the hook seat. The conveying pipe can pass through multiple guide rings in sequence. The mobile trolley is equipped with a waste gas storage box for collecting waste gas. The inner end of the conveying pipe is connected to the waste gas storage box. The swing arm module includes a first drive arm that is longitudinally swinging and mounted on a rotating disk. The first drive arm has a hollow groove formed along its length. A second drive arm is slidably mounted in the hollow groove. A hydraulic module that drives the second drive arm to move along the length of the hollow groove is arranged inside the hollow groove. The exhaust gas collection device also includes a first drive assembly disposed on the collection mounting base. The first drive assembly includes a first longitudinal rail arranged along the longitudinal direction of the collection mounting base, a first sliding plate slidably mounted on the first longitudinal rail, a first electric push rod arranged longitudinally on the collection mounting base, and the drive end of the first electric push rod connected to the first sliding plate. A first transverse plate arranged laterally is mounted on the top of the first sliding plate, the bottom of the first sliding plate is connected to the first collection drive plate, a first servo motor is mounted on the first transverse plate, a first drive shaft is mounted on the drive end of the first servo motor, and the first drive shaft is connected to the first universal joint. Below the first acquisition drive board is a second acquisition drive board. The second acquisition drive board can swing back and forth around the first acquisition drive board. A horizontal guide plate arranged horizontally is installed at the bottom of the second acquisition drive board. A horizontal guide groove is formed along the length of the horizontal guide plate. A second sliding plate is slidably installed in the horizontal guide groove. A bottom connecting column is installed at the bottom of the second sliding plate. The bottom connecting column is connected to the air extraction pipe. The bottom of the bottom connecting seat is connected to the second sliding plate. The first acquisition drive board is equipped with a swing drive module that drives the second acquisition drive board to swing back and forth. The swing drive module includes a first drive gear disposed on the back of the first acquisition drive board. The first acquisition drive board is equipped with a first semi-circular gear and a first gear drive shaft coaxially connected to the first semi-circular gear. A first transmission gear fixed to the first gear drive shaft is mounted on the back of the first acquisition drive board. The first transmission gear meshes with the first drive gear. A drive swing arm is mounted on the first drive gear shaft. The second acquisition drive board is equipped with a second gear drive shaft. The second gear drive shaft is equipped with a second semi-circular gear that meshes with the first semi-circular gear. The bottom of the drive swing arm is connected to the second gear drive shaft.

2. The volatile organic compound (VOC) waste gas collection and detection device for environmental monitoring according to claim 1, characterized in that: The first universal joint includes a first cross module mounted on the top, a first bottom groove formed on the top of the first universal joint, and a first top groove formed on the bottom of the first drive shaft; the front and rear ends of the first cross module are rotatably connected to the first top groove, and the left and right ends of the first cross module are rotatably connected to the first bottom groove; the first universal joint can swing longitudinally back and forth and longitudinally left and right around the first cross module; the first universal joint has an axial hollow hole formed along its length, a second universal joint is slidably mounted in the axial hollow hole, a second cross module is provided at the bottom of the second universal joint, and the top of the bottom connecting seat is rotatably connected to the second cross module; The first universal joint has an axial guide groove formed along the axial direction, which is connected to the axial hollow hole. The outer wall of the second universal joint has an axial sliding block that slides with the axial guide groove. The bottom of the second universal joint has a second top groove formed, the top of the bottom connecting seat has a second bottom groove formed, and the front and rear ends of the second cross module are rotatably connected to the second bottom groove. The left and right ends of the second cross module are rotatably connected to the second top slot; the bottom connecting seat can swing back and forth longitudinally and left and right longitudinally around the second cross module.

3. The volatile organic compound (VOC) waste gas collection and detection device for environmental monitoring according to claim 1, characterized in that: The drilling device further includes an elastic contact arm, including a first contact arm hinged to the edge of the guide plate. The first contact arm has an elastic groove formed along its length. A second contact arm is slidably installed in the elastic groove. An elastic compression spring that drives the second contact arm to pop outward is provided in the elastic groove. A contact seat is installed at the outer end of the second contact arm, and a friction block is installed at the outer end of the contact seat.

4. The volatile organic compound (VOC) waste gas collection and detection device for environmental monitoring according to any one of claims 1 to 3, characterized in that: The air extraction pipe is provided with a square opening, and a baffle module is provided in the square opening. The baffle module includes a first baffle and a second baffle with the same mesh area, wherein the second baffle slides against the surface of the first baffle. The baffle module is provided with a mesh adjustment structure to adjust the mesh area.

5. The volatile organic compound (VOC) waste gas collection and detection device for environmental monitoring according to claim 4, characterized in that: The square opening is provided with a frame for installing the first baffle. The first baffle is fixedly installed on the frame. The two opposite corners of the second baffle are provided with outwardly extending diagonal extension plates. The two opposite corners of the frame are provided with extension tracks. The diagonal extension plates are provided with diagonal sliding seats that slide with the extension tracks. The frame is provided with a moving drive structure that drives the diagonal sliding seats to move along the extension tracks.

6. The volatile organic compound (VOC) waste gas collection and detection device for environmental monitoring according to claim 5, characterized in that: The moving drive structure includes an adjusting threaded hole located at one corner of the frame, a spirally lifting adjusting threaded post installed in the adjusting threaded hole, a concave adjusting sliding groove formed in the frame, one end of the adjusting sliding groove communicating with the adjusting threaded hole, a diagonal adjusting seat installed at the bottom of the extension track, the diagonal adjusting seat slidably installed in the adjusting sliding groove, a guide slope formed on the side of the diagonal adjusting seat near the adjusting threaded hole; an adjusting compression spring is provided in the adjusting sliding groove to drive the diagonal adjusting seat closer to the adjusting threaded hole.

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