Mining area pollution gas detection device

Abstract

The invention discloses a mining area pollution gas detection device, and relates to the technical field of environmental monitoring, the mining area pollution gas detection device comprises a detection cylinder, the interior of the detection cylinder is divided into a plurality of independent detection cavities through partition plates and a rotating cylinder, the rotating cylinder is fixedly connected to the lower surface of a rotating disc, and the rotating disc is rotatably installed at the top end of the detection cylinder. A first multi-stage telescopic pipe, a lifting assembly and a cavity block are arranged on the turntable, the top end of the first multi-stage telescopic pipe is connected with an air suction head, and the lifting assembly drives the first multi-stage telescopic pipe to stretch; an air exhaust assembly in the rotary drum enables the first multi-stage telescopic pipe to form negative pressure, and air is discharged into the detection cavity from an air port. The bottom ends of the detection heads in the cavity blocks are connected with inclined blocks, the inclined plates at the top ends of the partition plates are matched with the inclined blocks, and the detection heads pass through the partition plates through cooperation of the inclined blocks and the inclined plates when rotating along with the rotating disc to detect gas in the detection cavities. The driving assembly drives the turntable to rotate. According to the device, multi-height gas independent sampling detection is realized, and the detection efficiency and precision are improved.

Description

Technical Field

[0001] This invention relates to the field of environmental monitoring technology, specifically to a device for detecting polluting gases in mining areas. Background Technology

[0002] In mining operations, real-time monitoring of pollutant gases is a crucial step in ensuring production safety and protecting the ecological environment. However, existing pollutant gas detection devices in mining areas generally suffer from the technical bottleneck of difficulty in independently sampling and detecting gases at multiple altitudes, which seriously affects the accuracy and application value of the detection data.

[0003] Current mainstream detection devices mostly employ a single suction head for fixed-height sampling, or perform step-by-step sampling by manually adjusting the suction head height. The former can only acquire gas data at a fixed height, failing to reflect the differences in gas concentration distribution at different heights within the mining area—for example, toxic gases with higher densities tend to accumulate at the bottom of the mining area, while a volatile gas diffusion layer may exist in the middle and upper parts, making it difficult to comprehensively assess the pollution status with data from a single height. The latter, while enabling multi-height sampling, requires frequent manual operation, which is not only inefficient but also prone to gas mixing at different heights during the sampling process, leading to cross-contamination of gas components within the detection chamber and preventing independent analysis of gases at each height.

[0004] Some improved devices attempt to use multiple suction heads for parallel sampling, but due to structural design limitations, multiple suction heads must share a single detection system. Gas samples from different heights are prone to mixing in the delivery pipeline, making it difficult to guarantee the independence of the detection results. Furthermore, the multi-suction head structure increases the complexity and maintenance cost of the device, and is susceptible to pipeline blockage and component damage in the complex environment of mining areas, resulting in poor applicability.

[0005] Therefore, how to achieve efficient and independent sampling and detection of gases with different levels of pollution in mining areas without cross-contamination has become a core problem that existing technologies urgently need to solve, and it is also the key starting point for the development of this patent. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a device for detecting polluting gases in mining areas.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a mining area pollutant gas detection device, comprising a detection cylinder, wherein multiple partition plates are fixedly installed inside the detection cylinder, the multiple partition plates are equally spaced along the circumference of the detection cylinder, a turntable is rotatably installed on the top of the detection cylinder, and a rotating cylinder is fixedly installed on the lower surface of the turntable, one end of each partition plate is tightly attached to the outer surface of the rotating cylinder, so that the multiple partition plates divide the interior of the detection cylinder into multiple independent detection chambers, and multiple second exhaust heads are fixedly installed on the detection cylinder, the multiple second exhaust heads are arranged one-to-one with the multiple detection chambers, and a second valve is fixedly installed on the second exhaust head;

[0008] A first multi-stage telescopic tube is fixedly installed on the turntable. An air suction head is fixedly installed on the top end of the first multi-stage telescopic tube. An air port is opened on the rotating drum. An air extraction component is fixedly installed inside the rotating drum. The air extraction component can create a negative pressure inside the first multi-stage telescopic tube and discharge the polluted gas from the air port.

[0009] A lifting assembly is fixedly installed on the turntable. The lifting assembly is fixedly connected to the air intake head and can extend or retract the top of the first multi-stage telescopic tube.

[0010] A cavity block is fixedly installed on the turntable. A detection head is provided inside the cavity block. An inclined block is fixedly installed on the bottom end of the detection head. An inclined plate is fixedly installed on the top end of the partition plate. The inclination of the inclined plate matches the inclination of the inclined block. A conduit is fixedly installed on the top end of the detection head. A guide rod is fixedly installed on the suction head. A movable block is fixedly installed on the bottom end of the guide rod. The movable block is located inside the conduit and is slidably connected to the conduit.

[0011] The detection cylinder is equipped with a drive assembly that can drive the turntable to rotate.

[0012] Preferably, the lifting assembly includes a second multi-stage telescopic tube, a second air pump, and a connecting pipe; the second air pump is fixedly installed on the turntable, the bottom end of the second multi-stage telescopic tube is fixedly connected to the turntable, the top end of the second multi-stage telescopic tube is fixedly connected to the suction head, a first exhaust head is fixedly installed on the top end of the second multi-stage telescopic tube, a first valve is fixedly installed on the first exhaust head, the second air pump is fixedly installed on the turntable, one end of the connecting pipe is fixedly connected to the air outlet end of the second air pump, and the other end of the connecting pipe is fixedly connected to the bottom end of the second multi-stage telescopic tube.

[0013] Preferably, the air extraction assembly includes an air bucket, an air inlet pipe, and a first air pump; the top of the air bucket is fixedly connected to the turntable, the interior of the air bucket is connected to the interior of the first multi-stage telescopic pipe, the top of the air inlet pipe is fixedly connected to the bottom of the air bucket, the first air pump is fixedly installed inside the rotating drum, and the bottom of the air inlet pipe is fixedly connected to the air inlet end of the first air pump.

[0014] Preferably, an air guide plate is fixedly installed on the inner surface of the rotating drum at the air inlet, and the air outlet of the first air pump is fixedly connected to the air guide plate through multiple connecting pipes.

[0015] Preferably, the drive assembly includes a motor, a gear, and a gear ring. The gear ring is fixedly connected to the turntable, the motor is fixedly mounted on the outer surface of the detection cylinder, the gear is fixedly mounted on the output end of the motor, and the gear and the gear ring are in a meshing state.

[0016] Preferably, a filter plate is fixedly installed at the air inlet of the suction head.

[0017] Compared with the prior art, the present invention provides a device for detecting polluted gases in mining areas, which has the following beneficial effects:

[0018] 1. The device uses a lifting assembly to drive the suction head to rise and fall synchronously, enabling continuous collection of pollutant gases at different heights. Combined with the independent detection chambers formed by the partition plate and the rotating drum, gas samples from each height are stored and tested separately, avoiding cross-mixing. The detection head sequentially detects the gas in each chamber as the rotating disc rotates, accurately capturing differences in gas concentration at different heights. This provides reliable data support for analyzing the distribution of pollution in mining areas, solving the detection bias problems caused by single-height or mixed sampling in traditional devices.

[0019] 2. The device adopts an automated structure with a motor-driven turntable rotation and an air pump controlling the raising and lowering of the telescopic pipe, eliminating the need for frequent manual adjustments and reducing operational intensity in complex mining environments. The filter plate prevents dust from clogging the pipeline, the corrosion-resistant material is suitable for harsh mining conditions, and the independent exhaust head design facilitates quick emptying of the detection chamber. The overall structure is compact and easy to maintain, enabling stable operation in dusty and vibrating mining environments, enhancing the device's practical application value and promotion potential.

[0020] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the detection cylinder, rotating cylinder, and partition plate in this invention;

[0024] Figure 3 This is a schematic cross-sectional view of the turntable and rotating cylinder in this invention;

[0025] Figure 4 This is a cross-sectional structural diagram of the conduit, guide rod, and movable block in this invention.

[0026] In the diagram: 1. Detection cylinder; 2. Turntable; 3. Rotating cylinder; 4. Divider plate; 5. First multi-stage telescopic tube; 6. Inhalation head; 7. Filter plate; 8. Air hopper; 9. Inlet pipe; 10. First air pump; 11. Air guide plate; 12. Air inlet; 13. Second multi-stage telescopic tube; 14. Second air pump; 15. Connecting pipe; 16. First exhaust head; 17. First valve; 18. Cavity block; 19. Detection head; 20. Inclined block; 21. Guide tube; 22. Guide rod; 23. Movable block; 24. Inclined plate; 25. Motor; 26. Gear; 27. Gear ring; 28. Second exhaust head; 29. ​​Second valve. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1 to 4 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0028] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Please combine Figures 1 to 4 As shown, this invention provides a mining area pollutant gas detection device that can efficiently collect and independently detect pollutant gases at different heights and in different areas of the mining area. The following is a detailed description of the specific structure and working process.

[0031] The detection device includes a detection cylinder 1, which is made of corrosion-resistant, high-strength metal. Multiple partition plates 4 are fixedly installed inside the cylinder. These partition plates 4 are evenly spaced along the circumference of the detection cylinder 1, and the number of partition plates 4 can be set according to actual detection requirements, typically 4-8. A rotating cylinder 3 is installed inside the detection cylinder 1. One end of each partition plate 4 is tightly fitted to the outer surface of the subsequently installed rotating cylinder 3, dividing the interior of the detection cylinder 1 into multiple independent detection chambers. Each detection chamber has the same volume, ensuring consistent gas detection conditions.

[0032] To facilitate gas discharge from the detection chambers, multiple second exhaust heads 28 are fixedly installed on the detection cylinder 1. Each second exhaust head 28 corresponds to one of the detection chambers, meaning each detection chamber is connected to a second exhaust head 28. A second valve 29 is fixedly installed on each second exhaust head 28. The second valve 29 is manually or electrically controlled. When a detection chamber completes gas detection, the corresponding second valve 29 is opened, allowing the gas to be discharged through the second exhaust head 28, facilitating the next detection operation.

[0033] A turntable 2 is rotatably mounted on the top of the detection cylinder 1 via a bearing. A rotating cylinder 3 is fixedly mounted at the center of the lower surface of the turntable 2. The bottom end of the rotating cylinder 3 is rotatably connected to the detection cylinder 1. The rotating cylinder 3 and the turntable 2 are coaxially arranged. The height of the rotating cylinder 3 is adapted to the height of the internal partition plate 4 of the detection cylinder 1, ensuring that the partition plate 4 can fit tightly against its outer surface. The rotating cylinder 3 can rotate synchronously with the turntable 2. An air port 12 is opened on the rotating cylinder 3, and the position of the air port 12 corresponds to the position of the detection chamber, which is used to transport the collected polluted gas into the detection chamber.

[0034] A first multi-stage telescopic tube 5 is fixedly installed on the turntable 2. An air intake head 6 is fixedly installed on the top of the first multi-stage telescopic tube 5. In order to prevent dust, particulate matter and other impurities in the air of the mining area from entering the device and affecting the detection accuracy and service life of the components, a filter plate 7 is fixedly installed at the air inlet of the air intake head 6. The filter plate 7 adopts a high-density filter screen, which can effectively filter impurities with a diameter greater than 0.1mm.

[0035] An air extraction assembly is fixedly installed inside the rotating drum 3 to create negative pressure inside the first multi-stage telescopic tube 5, thereby enabling the intake and transport of polluted gas. The air extraction assembly includes an air bucket 8, an air inlet pipe 9, and a first air pump 10. The air bucket 8 is funnel-shaped, with its top fixedly connected to the rotating disc 2. The interior of the air bucket 8 is connected to the interior of the first multi-stage telescopic tube 5, forming a gas flow channel. The top of the air inlet pipe 9 is fixedly connected to the bottom of the air bucket 8. The air inlet pipe 9 uses a rigid pipe to ensure the stability of gas transport. The first air pump 10 is fixedly installed inside the rotating drum 3. The first air pump 10 is a high-negative-pressure, low-noise miniature air pump, and the bottom of the air inlet pipe 9 is fixedly connected to the air inlet end of the first air pump 10.

[0036] To optimize the gas discharge path, a gas guide plate 11 is fixedly installed on the inner surface of the rotating cylinder 3 at the gas port 12. The gas outlet of the first gas pump 10 is fixedly connected to the gas guide plate 11 through multiple connecting pipes. The connecting pipes are evenly distributed on the gas guide plate 11. After the gas is pressurized by the first gas pump 10, it is transported to the gas guide plate 11 through the connecting pipes. Under the guidance of the gas guide plate 11, it is evenly discharged from the gas port 12 into the corresponding detection chamber.

[0037] A lifting assembly is fixedly installed on the turntable 2. This lifting assembly is fixedly connected to the suction head 6 and is used to drive the top end of the first multi-stage telescopic tube 5 to extend or retract, thereby adjusting the height of the suction head 6 and realizing the collection of polluted gas at different heights. The lifting assembly includes a second multi-stage telescopic tube 13, a second air pump 14, and a connecting pipe 15.

[0038] The second air pump 14 is fixedly installed on the turntable 2. The second air pump 14 is a micro air pump with stable air pressure. The bottom end of the second multi-stage telescopic tube 13 is fixedly connected to the turntable 2, and the top end of the second multi-stage telescopic tube 13 is fixedly connected to the suction head 6. The second multi-stage telescopic tube 13 is arranged parallel to the first multi-stage telescopic tube 5, and together they support and lift the suction head 6. The top end of the second multi-stage telescopic tube 13 is fixedly installed with a first exhaust head 16, and the first exhaust head 16 is fixedly installed with a first valve 17. The first valve 17 is used to control the discharge of gas inside the second multi-stage telescopic tube 13. One end of the connecting pipe 15 is fixedly connected to the air outlet end of the second air pump 14, and the other end of the connecting pipe 15 is fixedly connected to the bottom end of the second multi-stage telescopic tube 13, forming a gas delivery channel.

[0039] When it is necessary to raise the suction head 6, the second air pump 14 is started. The second air pump 14 delivers gas through the connecting pipe 15 to the interior of the second multi-stage telescopic pipe 13, causing the second multi-stage telescopic pipe 13 to extend under air pressure, thereby driving the suction head 6 and the first multi-stage telescopic pipe 5 to rise synchronously. When it is necessary to lower the suction head 6, the second air pump 14 is turned off and the first valve 17 is opened. The gas inside the second multi-stage telescopic pipe 13 is discharged through the first exhaust head 16. The second multi-stage telescopic pipe 13 contracts under its own weight and the weight of the suction head 6, and the suction head 6 and the first multi-stage telescopic pipe 5 are lowered accordingly.

[0040] A cavity block 18 is fixedly installed on the turntable 2. The cavity block 18 has a hollow structure and a detection head 19 is installed inside. The detection head 19 uses a high-precision gas sensor and can detect a variety of common mining pollutants, such as methane, carbon monoxide, and sulfur dioxide. An inclined block 20 is fixedly installed on the bottom end of the detection head 19. The bottom end of the inclined block 20 has a sloping structure. An inclined plate 24 is fixedly installed on the top end of the partition plate 4. The inclination of the inclined plate 24 matches the inclination of the inclined surface of the inclined block 20 to ensure smooth contact between the two.

[0041] To ensure the stability of the lifting and lowering movement of the detection head 19, a conduit 21 is fixedly installed on the top of the detection head 19. The conduit 21 is a hollow straight tube structure. A guide rod 22 is fixedly installed on the suction head 6. The guide rod 22 is coaxially arranged with the conduit 21. A movable block 23 is fixedly installed on the bottom end of the guide rod 22. The diameter of the movable block 23 is adapted to the inner diameter of the conduit 21. The movable block 23 is located inside the conduit 21 and is slidably connected to the conduit 21. Through the cooperation between the guide rod 22 and the conduit 21, the lifting and lowering of the detection head 19 is guided, preventing the detection head 19 from deviating.

[0042] A drive assembly is installed on the detection cylinder 1 to drive the turntable 2 to rotate, enabling the detection head 19 to sequentially detect different detection chambers. The drive assembly includes a motor 25, a gear 26, and a gear ring 27. The gear ring 27 is fixedly mounted on the lower edge of the turntable 2, and is coaxial with the turntable 2. The motor 25 is fixedly mounted on the outer surface of the detection cylinder 1 via a bracket. The motor 25 is a stepper motor, which can achieve precise speed control. The gear 26 is fixedly mounted on the output end of the motor 25, and the gear 26 is meshed with the gear ring 27, achieving power transmission through gear drive. When the motor 25 starts, the output end of the motor 25 drives the gear 26 to rotate, the gear 26 drives the gear ring 27 to rotate, and thus drives the turntable 2 to rotate slowly around the axis of the detection cylinder 1. The speed is generally controlled at 1-2 revolutions per minute to ensure that the detection head 19 has sufficient time to detect each detection chamber.

[0043] When detecting polluting gases in the mining area, the device is first initialized to ensure that all second valves 29 and first valve 17 are closed, and the suction head 6 is located at the lowest position in the detection area. Then, the first air pump 10 is started. The first air pump 10 creates a negative pressure inside the first multi-stage telescopic pipe 5 through the air inlet pipe 9 and the air bucket 8. The polluting gases in the mining area are filtered by the filter plate 7 of the suction head 6 and then sucked into the first multi-stage telescopic pipe 5. They then pass through the air bucket 8 and the air inlet pipe 9 in sequence and enter the first air pump 10. After being pressurized by the first air pump 10, they are transported to the air guide plate 11 through the connecting pipe and finally discharged from the air outlet 12 into the corresponding detection chamber.

[0044] Once air begins to enter the first detection chamber, the second air pump 14 and motor 25 are activated. After motor 25 starts, the meshing transmission of gear 26 and gear ring 27 drives the turntable 2 to rotate slowly. After the second air pump 14 starts, it delivers gas through connecting pipe 15 to the interior of the second multi-stage telescopic pipe 13. Under air pressure, the second multi-stage telescopic pipe 13 gradually extends, causing the first multi-stage telescopic pipe 5 to extend synchronously, gradually increasing the height of the suction head 6, thereby collecting polluted gas at different heights within the detection area. As the turntable 2 rotates, the air inlet 12 corresponds sequentially to different detection chambers, and polluted gas at different heights is delivered to each chamber, achieving independent collection of gas at multiple heights.

[0045] During the rotation of the turntable 2, the detection head 19 rotates along with the turntable 2, needing to pass over multiple partition plates 4. When the detection head 19 rotates to the partition plate 4, the inclined surface of the inclined block 20 first contacts the inclined plate 24 at the top of the partition plate 4. Due to the matching inclination of the two, the inclined plate 24 generates an upward thrust on the inclined block 20, pushing the inclined block 20 and the detection head 19 upward. The conduit 21 slides upward along the movable block 23 of the guide rod 22 until the entire inclined block 20 enters the interior of the cavity block 18. At this time, the inclined block 20 completely seals the bottom end of the cavity block 18, preventing gas leakage and mixing between different detection chambers. After the detection head 19 passes the partition plate 4, the inclined block 20 separates from the inclined plate 24. Under the gravity of the detection head 19 and the inclined block 20, the detection head 19 moves downward, and the conduit 21 slides downward along the movable block 23 of the guide rod 22. The detection head 19 enters the next detection chamber to detect the composition and concentration of the pollutant gas in that detection chamber.

[0046] After all detection chambers have completed gas collection and detection, the first air pump 10, the second air pump 14, and the motor 25 are turned off. The first valve 17 is opened, and the gas inside the second multi-stage telescopic tube 13 is discharged through the first exhaust head 16. The second multi-stage telescopic tube 13 and the first multi-stage telescopic tube 5 retract, and the suction head 6 returns to its lowest position. Subsequently, according to the detection requirements, the corresponding second valve 29 can be opened, and the gas in each detection chamber can be discharged through the second exhaust head 28, completing one detection cycle.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A device for detecting polluted gases in a mining area, characterized in that: The device includes a detection cylinder (1), inside which multiple partition plates (4) are fixedly installed. The multiple partition plates (4) are evenly distributed in the circumferential direction of the detection cylinder (1). A turntable (2) is rotatably installed on the top of the detection cylinder (1). A rotating cylinder (3) is fixedly installed on the lower surface of the turntable (2). One end of each partition plate (4) is tightly attached to the outer surface of the rotating cylinder (3), so that the multiple partition plates (4) divide the interior of the detection cylinder (1) into multiple independent detection chambers. Multiple second exhaust heads (28) are fixedly installed on the detection cylinder (1). The multiple second exhaust heads (28) are arranged one-to-one with the multiple detection chambers. A second valve (29) is fixedly installed on the second exhaust head (28). The turntable (2) is fixedly installed with a first multi-stage telescopic tube (5), and a suction head (6) is fixedly installed on the top end of the first multi-stage telescopic tube (5). The rotating drum (3) is provided with an air port (12). An air extraction component is fixedly installed inside the rotating drum (3). The air extraction component can create a negative pressure inside the first multi-stage telescopic tube (5) and discharge the polluted gas from the air port (12). A lifting assembly is fixedly installed on the turntable (2). The lifting assembly is fixedly connected to the suction head (6) and can extend or retract the top of the first multi-stage telescopic tube (5). A cavity block (18) is fixedly installed on the turntable (2). A detection head (19) is provided inside the cavity block (18). An inclined block (20) is fixedly installed on the bottom end of the detection head (19). An inclined plate (24) is fixedly installed on the top end of the partition plate (4). The inclination of the inclined plate (24) is adapted to the inclination of the inclined surface of the inclined block (20). A conduit (21) is fixedly installed on the top end of the detection head (19). A guide rod (22) is fixedly installed on the suction head (6). A movable block (23) is fixedly installed on the bottom end of the guide rod (22). The movable block (23) is located inside the conduit (21) and is slidably connected to the conduit (21). The detection cylinder (1) is equipped with a drive assembly that can drive the turntable (2) to rotate.

2. The mining area polluted gas detection device according to claim 1, characterized in that: The lifting assembly includes a second multi-stage telescopic tube (13), a second air pump (14), and a connecting tube (15). The second air pump (14) is fixedly installed on the turntable (2). The bottom end of the second multi-stage telescopic tube (13) is fixedly connected to the turntable (2). The top end of the second multi-stage telescopic tube (13) is fixedly connected to the suction head (6). A first exhaust head (16) is fixedly installed on the top end of the second multi-stage telescopic tube (13). A first valve (17) is fixedly installed on the first exhaust head (16). The second air pump (14) is fixedly installed on the turntable (2). One end of the connecting pipe (15) is fixedly connected to the air outlet of the second air pump (14). The other end of the connecting pipe (15) is fixedly connected to the bottom end of the second multi-stage telescopic tube (13).

3. The mining area polluted gas detection device according to claim 1, characterized in that: The air extraction assembly includes an air bucket (8), an air inlet pipe (9), and a first air pump (10); The top of the air bucket (8) is fixedly connected to the turntable (2), the interior of the air bucket (8) is connected to the interior of the first multi-stage telescopic tube (5), the top of the air inlet pipe (9) is fixedly connected to the bottom of the air bucket (8), the first air pump (10) is fixedly installed inside the rotating drum (3), and the bottom of the air inlet pipe (9) is fixedly connected to the air inlet end of the first air pump (10).

4. The mining area polluted gas detection device according to claim 3, characterized in that: An air guide plate (11) is fixedly installed on the inner surface of the rotating drum (3) and at the air inlet (12). The air outlet of the first air pump (10) is fixedly connected to the air guide plate (11) through multiple connecting pipes.

5. A mining area polluted gas detection device according to claim 1, characterized in that: The drive assembly includes a motor (25), a gear (26) and a gear ring (27). The gear ring (27) is fixedly connected to the turntable (2). The motor (25) is fixedly installed on the outer surface of the detection cylinder (1). The gear (26) is fixedly installed on the output end of the motor (25). The gear (26) and the gear ring (27) are in a meshing state.

6. The mining area polluted gas detection device according to claim 1, characterized in that: A filter plate (7) is fixedly installed at the air inlet of the suction head (6).

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