Precise intelligent air regulation and dust collection device for cyclone air curtain at tunneling face

Abstract

The application provides a kind of tunneling working face cyclone air curtain precision intelligent air regulating dust collecting device, it includes drawing dust collecting air duct, press-in type air duct and intelligent air curtain adjusting assembly;Drawing dust collecting air duct extends along roadway, press-in type air duct is parallel and interval arranged with drawing dust collecting air duct, press-in type air duct includes cylinder, air deflector, arc air cover and pressure fan, cylinder has axial and multiple side openings, air deflector is opposite to axial opening, arc air cover is covered in the outside of side opening to form first air curtain.Intelligent air curtain adjusting assembly includes dust monitor, controller, driver and multiple switch boards, dust monitor monitors roadway dust concentration, controller adjusts first air curtain according to data control pressure fan and driver.The application can flexibly respond to dust changes, improve work efficiency and reliability, ensure safety in production, meet the needs of intelligentization and automation.

Description

Technical Field

[0001] This invention relates to the field of coal mine dust control technology, specifically to a precise and intelligent air conditioning and dust collection device for a vortex air curtain in a tunneling face. Background Technology

[0002] In coal mining, the tunneling face, as the core working area, poses a significant threat to miners' health and safety due to dust pollution. Among related technologies, tunneling face ventilation systems often employ forced ventilation; however, the airflow generated by this method is easily affected by changes in the roadway space, causing dust to spread into the operating area. This results in low dust collection efficiency and difficulty in forming an effective barrier to isolate the dust source. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a long-pressure, short-extraction ventilation system for coal mine tunneling operations. This system can flexibly respond to changes in dust concentration according to actual conditions, effectively improving the working efficiency and reliability of ventilation and dust collection devices, and providing strong protection for the safe production of coal mine roadways.

[0004] The precision intelligent air conditioning and dust collection device for tunneling faces provided by this invention includes: A dust collection duct is provided, which extends along the length of the coal mine roadway and is connected to a suction fan. A forced-in ventilation duct is provided parallel to and spaced apart from the exhaust dust collection duct in the coal mine roadway. The forced-in ventilation duct includes a cylinder body, a guide plate, an arc-shaped hood, and a compressed air fan. The cylinder body is connected to the compressed air fan. The cylinder body has an axial opening and multiple side openings. A grid frame is provided between the guide plate and the cylinder body. The guide plate is opposite to the axial opening. Multiple side openings are spaced around the cylinder body. Multiple arc-shaped hoods are provided, each corresponding to one of the side openings, to form a first air curtain in the radial direction of the cylinder body. An intelligent air curtain adjustment component includes a dust monitor, a controller, a driver, and multiple switch plates. Each switch plate corresponds to an air outlet of the arc-shaped air hood. The dust monitor is located inside the coal mine roadway and is used to monitor the dust concentration in the roadway. The dust monitor, the controller, and the driver are electrically connected. The output of the driver is drivenly connected to the switch plates. The controller is used to adjust the air compressor and the driver based on the dust concentration data collected by the dust monitor to adjust the first air curtain.

[0005] In summary, the intelligent air conditioning and dust collection device for the vortex air curtain in the tunneling face provided by this invention uses a dust monitor to detect changes in dust concentration in the coal mine roadway in real time. Based on the preset logic in the controller, it precisely adjusts the air compressor and the switch plate 251, realizing intelligent and automated adjustment of the first air curtain 30. This not only meets the development needs of intelligent and automated coal mine operations, but also flexibly responds to changes in dust concentration according to actual conditions, effectively improving the working efficiency and reliability of the ventilation and dust collection device, and providing a strong guarantee for the safe production of coal mine roadways.

[0006] In some embodiments, the intelligent air curtain adjustment assembly further includes a linkage sleeve, which is sleeved on the outside of the cylinder and connected to the output end of the driver. A plurality of switch plates are spaced apart on the linkage sleeve to achieve synchronous adjustment of the plurality of arc-shaped air hoods.

[0007] In some embodiments, the dust monitor is located inside the coal mine roadway and on the side of the intelligent air curtain adjustment assembly away from the tunneling face, and the dust monitor is used to monitor the dust concentration in the roadway behind the first air curtain.

[0008] In some embodiments, the air guide plate has a first inclined surface and a second inclined surface, both of which extend inclinedly outward from the central axis of the cylinder and toward the tunneling face, so as to guide the airflow at the axial opening toward the tunneling face.

[0009] In some embodiments, the air guide plate includes a first guide plate and a second guide plate, the first inclined surface is disposed on the first guide plate, the second inclined surface is disposed on the second guide plate, and the first guide plate and the second guide plate are connected at an angle.

[0010] In some embodiments, the included angle between the first guide plate and the second guide plate is set to 120° to 160°.

[0011] In some embodiments, the extractable dust collection duct further includes an annular pipe, a first annular plate, and a second annular plate. The annular pipe is connected to the air compressor and is sleeved on the outside of the extractable dust collection duct. The annular pipe has a first opening. The first annular plate and the second annular plate are disposed opposite each other on both sides of the first opening. The first annular plate and the second annular plate extend along the radial direction of the extractable dust collection duct to form a second air curtain extending along the radial direction of the extractable dust collection duct.

[0012] In some embodiments, the annular tube has a second opening, the annular tube is provided with an arc-shaped plate, and the exhaust-type dust collection duct has a conical guide plate. The conical guide plate and the arc-shaped plate are disposed opposite to each other outside the second opening to guide the airflow at the second opening toward the tunneling face to form a third air curtain.

[0013] In some embodiments, the first air curtain, the second air curtain, and the third air curtain are arranged at intervals along the tunneling direction of the coal mine roadway, and the third air curtain is arranged closer to the tunneling face than the second air curtain.

[0014] In some embodiments, the extractable dust collection duct has an air intake, and a filter screen is provided at the air intake. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a precise and intelligent air conditioning and dust collection device for a tunneling face vortex air curtain provided in an embodiment of the present invention.

[0016] Figure 2 This is a three-dimensional schematic diagram of the cylinder of the precision intelligent air conditioning and dust collection device for tunneling face vortex air curtain provided in an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the cylinder structure in a precision intelligent air conditioning and dust collection device for a tunneling face vortex air curtain provided in an embodiment of the present invention.

[0018] Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the cylinder along AA.

[0019] Figure 5 This is a three-dimensional schematic diagram of the extractable dust collection duct in the precision intelligent air conditioning and dust collection device for vortex air curtain in tunneling face provided in an embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of the extractable dust collection duct in the precision intelligent air conditioning and dust collection device for tunneling faces provided in an embodiment of the present invention.

[0021] Attached reference numeral: 100, tunneling face; 10. Extraction-type dust collection duct; 11. Conical deflector plate; 12. Air intake; 13. Filter screen; 141. Annular tube; 1411. First opening; 1412. Second opening; 142. First annular plate; 143. Second annular plate; 144. Arc-shaped plate; 20. Forced-in air duct; 21. Duct body; 211. Axial opening; 212. Side opening; 22. Air guide plate; 221. First guide plate; 2211. First inclined surface; 222. Second guide plate; 2221. Second inclined surface; 23. Arc-shaped air hood; 231. Air outlet; 24. Grid frame; 25. Intelligent air curtain adjustment assembly; 251. Switch board; 252. Driver; 253. Linkage bushing; 254. Mounting base; 27. Lifting ring; 30. First wind curtain; 40. Second wind curtain; 50. Third wind curtain. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] like Figures 1 to 6 As shown, an embodiment of the present invention provides a precise intelligent air conditioning and dust collection device for a vortex air curtain in a tunneling face. It includes an extractable dust collection duct 10, a forced-in duct 20, and an intelligent air curtain adjustment component 25. The extractable dust collection duct 10 extends along the length of the coal mine roadway and is connected to a suction fan. The forced-in duct 20 includes a cylinder 21, a guide plate 22, an arc-shaped hood 23, and a compressed air fan. The cylinder 21 is parallel to and spaced apart from the extractable dust collection duct 10 within the coal mine roadway. The cylinder 21 is connected to the compressed air fan and has an axial opening 211 and multiple side openings 212. A grid frame 24 is provided between the guide plate 22 and the cylinder 21, with the guide plate 22 opposite to the axial opening 211. Multiple side openings 212 are spaced around the cylinder 21, and multiple arc-shaped wind hoods 23 are provided. The arc-shaped wind hoods 23 are correspondingly installed on the outside of the side openings 212 to form a first air curtain 30 in the radial direction of the cylinder 21.

[0024] The intelligent air curtain adjustment component 25 includes a dust monitor, a controller, a driver 252, and multiple switch plates 251. The switch plates 251 are set one-to-one with the air outlets 231 of the arc-shaped air hood 23. The dust monitor is installed in the coal mine roadway and is used to monitor the dust concentration in the coal mine roadway. The dust monitor, controller, and driver are electrically connected. The output end of the driver is connected to the switch plates. The controller is used to adjust the air compressor and driver to adjust the first air curtain according to the dust concentration data collected by the dust monitor.

[0025] In the long-pressure short-extraction ventilation system, long-pressure (forced ventilation) refers to the use of a long-distance cylinder 21 to transport fresh air from outside the coal mine roadway to the tunneling face 100, creating a positive pressure environment to suppress dust diffusion. Short-extraction (extraction ventilation) refers to the installation of a shorter extraction dust collection duct 10 and a suction fan near the tunneling face 100 to extract and purify dust-laden air nearby, thereby achieving dust removal. Figures 1 to 6 The direction indicated by the middle arrow is the direction of airflow.

[0026] In this embodiment, the cylinder 21 and the exhaust-type dust collection duct 10 are arranged in parallel and at a certain distance from each other, so that fresh air and polluted air form an orderly flow path in the roadway, avoiding mutual interference of airflows and thus improving ventilation efficiency. The axial opening 211 is the main channel for fresh air to flow to the tunneling face 100. The grid frame 24 and guide plate at the axial opening 211 can rectify the airflow, guiding it towards the tunneling face 100 in a predetermined direction to improve dust suppression.

[0027] Multiple side openings 212 serve as secondary channels for fresh air to enter the coal mine roadway. The multiple side openings 212 and the corresponding arc-shaped wind hoods 23 can form a first air curtain 30 with the air blown out from the side openings 212, effectively preventing the dust and harmful gases generated at the tunneling face 100 from spreading to other areas of the roadway.

[0028] Furthermore, the intelligent air curtain adjustment component 25 can monitor the dust concentration in the coal mine roadway using a dust monitor. A critical threshold is preset in the controller. When the controller compares the dust concentration collected by the dust monitor with the critical threshold, if the dust concentration in the coal mine roadway exceeds the critical threshold, the controller can adjust the first air curtain via a compressed air fan and a drive unit. On one hand, the compressed air fan can adjust the air velocity at the air outlet 231 of the arc-shaped air hood 23 according to the controller's instructions. By increasing or decreasing the air velocity, the intensity of the first air curtain 30 is changed to better block the diffusion of dust and harmful gases. On the other hand, the drive unit 252 can move the switch plate 251 at the air outlet 231. Through the movement of the switch plate 251, fine adjustment of parameters such as the flow rate and swirl angle at the air outlet 231 can be achieved. For example, when the dust concentration is high, the driver can drive the switch plate 251 to appropriately reduce the flow rate of the air outlet 231, and at the same time adjust the swirl angle to make the first air curtain 30 more compact and effective, thereby enhancing the ability to block dust and harmful gases.

[0029] In summary, the intelligent air conditioning and dust collection device for the vortex air curtain in the tunneling face provided by this invention uses an intelligent air curtain adjustment component 25 to sense changes in dust concentration in the coal mine roadway in real time through a dust monitor. Based on the preset logic in the controller, it precisely adjusts the air compressor and the switch plate 251, realizing intelligent and automated adjustment of the first air curtain 30. This not only meets the development needs of intelligent and automated coal mine operations, but also flexibly responds to changes in dust concentration according to actual conditions, effectively improving the working efficiency and reliability of the ventilation and dust collection device, and providing a strong guarantee for the safe production of coal mine roadways.

[0030] In this embodiment, as Figure 2 , Figure 3 and Figure 4 As shown, the arc-shaped profile of the arc-shaped hood 23 allows airflow to flow more smoothly when passing through the hood, reducing airflow turbulence and energy loss, while also expanding the coverage area of ​​the airflow, making the ventilation effect more uniform and widespread. Furthermore, the intelligent air curtain adjustment component 25 can adjust the intensity of the air curtain by controlling the airflow volume of the vent 231. For example, if it is necessary to increase the intensity of the air curtain to more effectively block dust diffusion, the driver 252 will drive the switch plate 251 to move away from the vent 231, increasing the opening area of ​​the vent 231, allowing more airflow to be ejected through the vent 231, forming a stronger air curtain. This effectively blocks the dust generated at the tunneling face 100 within a certain range, preventing it from spreading to the surrounding environment, thereby reducing the harm of dust to the health of workers. It also helps improve visibility at the working face, increasing work efficiency and safety.

[0031] Conversely, if an excessively strong air curtain is not required based on actual conditions, or in order to save energy, the driver 252 will move the switch plate 251 closer to the air vent 231, reducing the opening area of ​​the air vent 231, reducing the output of airflow, and optimizing the ventilation and dust reduction effect.

[0032] Furthermore, the intelligent air curtain adjustment component 25 also includes a linkage sleeve 253, which is sleeved on the outside of the cylinder 21. The linkage sleeve 253 is connected to the output end of the driver 252. Multiple switch plates 251 are spaced apart on the linkage sleeve 253 to achieve synchronous adjustment of multiple arc-shaped air hoods 23, which helps to form a uniform and stable air curtain.

[0033] Optionally, the actuator 252 can be configured as a cylinder, and the actuator 252 can be detachably mounted to the outside of the cylinder 21 via a mounting base 254, for example, a bolt structure or a snap-fit ​​structure.

[0034] Furthermore, the cylinder 21 is provided with a slide rail, which extends along the axial direction of the cylinder 21. The switch plate or linkage shaft is sleeved on the slide rail to limit the movement direction of the switch.

[0035] In addition, a lifting ring 27 is provided on the outside of the cylinder 21 to facilitate the fixing and installation of the cylinder 21.

[0036] In this embodiment, the dust monitor is located inside the coal mine roadway and on the side of the intelligent air curtain adjustment component 25 away from the tunneling face 100. The dust monitor is used to monitor the dust concentration in the roadway behind the first air curtain 30. The dust monitor is electrically connected to the driver 252.

[0037] Specifically, during actual operation, the dust monitor transmits the detected dust concentration data to the actuator 252 in real time. When the detected dust concentration is below the safety threshold, the actuator 252 maintains its current operating state, keeping the switch plate 251 of the intelligent air curtain adjustment component 25 unchanged, allowing the ventilation system to operate at the existing airflow and air curtain intensity, which meets ventilation needs while saving energy. When the dust concentration exceeds the safety threshold, the actuator 252 moves the switch plate 251 to increase the opening area of ​​the air vent 231, increase the airflow, and enhance the air curtain intensity to more effectively block dust diffusion.

[0038] like Figure 1 , Figure 2 , Figure 3 As shown, in some embodiments, the air guide plate 22 has a first inclined surface 2211 and a second inclined surface 2221. Both the first inclined surface 2211 and the second inclined surface 2221 extend outward from the central axis of the cylinder 21 and toward the tunneling face 100 to guide the airflow at the axial opening 211 toward the tunneling face 100. That is, when the air compressor delivers fresh air through the cylinder 21 to the axial opening 211, the first inclined surface 2211 and the second inclined surface 2221 can change the direction of airflow, causing the air that might have been jetted along the axial direction of the cylinder 21 to be diverted and flow toward the tunneling face 100, thereby expanding the coverage area of ​​fresh air and ensuring that all areas of the tunneling face 100 are adequately ventilated.

[0039] Furthermore, the air guide plate 22 includes a first guide plate 221 and a second guide plate 222. A first inclined surface 2211 is disposed on the first guide plate 221, and a second inclined surface 2221 is disposed on the second guide plate 222. The first guide plate 221 and the second guide plate 222 are connected at an angle, and the included angle formed by the first guide plate 221 and the second guide plate 222 is set to 120° to 160°.

[0040] Specifically, when fresh air impacts the first inclined surface 2211 of the first guide plate 221, part of the airflow will flow along the direction of the first inclined surface 2211, while another part of the airflow will flow along the second inclined surface 2221 of the second guide plate 222, thereby forming a rotating and mixing area between the air guide plate 22 and the tunneling face 100, which helps to improve the ventilation effect.

[0041] Furthermore, setting the angle between the first guide plate 221 and the second guide plate 222 to 120° to 160° is the optimal solution derived by the inventors based on extensive experimental data and theoretical analysis. If the angle is too small, such as less than 120°, the airflow will be significantly constrained when passing through the guide plate 22, resulting in excessively concentrated airflow that cannot effectively diffuse to the surrounding area of ​​the working face, leading to insufficient ventilation in some areas and easy accumulation of gas and dust. Conversely, if the angle is too large, such as greater than 160°, the airflow will be excessively dispersed when passing through the guide plate 22, weakening the airflow force and failing to adequately deliver fresh air to the more distant parts of the working face, which will also affect the ventilation effect.

[0042] Optionally, the included angle formed by the first guide plate 221 and the second guide plate 222 can be set to 120°, 150° or 160°, etc.

[0043] like Figure 1 , Figure 5 and Figure 6 As shown, in some embodiments, the exhaust-type dust collection duct 10 further includes an annular pipe 141, a first annular plate 142, and a second annular plate 143. The annular pipe 141 is connected to a compressed air fan and is sleeved on the outside of the exhaust-type dust collection duct 10. The annular pipe 141 has a first opening 1411. The first annular plate 142 and the second annular plate 143 are disposed on opposite sides of the first opening 1411. The first annular plate 142 and the second annular plate 143 both extend along the radial direction of the exhaust-type dust collection duct 10 to form a second air curtain 40 extending along the radial direction of the exhaust-type dust collection duct 10.

[0044] Specifically, when the air compressor is started, air enters the annular pipe 141 through the air compressor and flows within the annular pipe 141. Since the annular pipe 141 has a first opening 1411, and the first annular plate 142 and the second annular plate 143 extend radially along the exhaust-type dust collection duct 10, after the air flows out from the first opening 1411, it is blocked and guided by the first annular plate 142 and the second annular plate 143, forming a second air curtain 40 extending radially along the exhaust-type dust collection duct 10. This forms an air barrier in the radial direction of the exhaust-type dust collection duct 10, effectively preventing dust generated at the tunneling face 100 from spreading to other areas of the roadway. In particular, for dust outside the axial air curtain range of the exhaust-type dust collection duct 10, the second air curtain 40 can play a supplementary blocking role, further improving the ventilation system's dust control capability.

[0045] Furthermore, the annular pipe 141 has a second opening 1412, and an arc-shaped plate 144 is provided on the annular pipe 141. The exhaust-type dust collection duct 10 has a conical guide plate 11. The conical guide plate 11 and the arc-shaped plate 144 are arranged opposite to each other on the outside of the second opening 1412 to guide the airflow at the second opening 1412 toward the tunneling face 100 to form a third air curtain 50.

[0046] In other words, the air inside the annular pipe 141 can be divided into a first airflow and a second airflow. The first airflow forms a second air curtain 40 through the first opening 1411. The second air curtain 40 forms a transverse air barrier around the exhaust dust collection duct 10, which can effectively prevent the dust generated at the tunneling face 100 from spreading to other areas of the roadway. The second airflow flows along the surface of the arc-shaped plate 144 through the second opening 1412, and gradually converges and accelerates under the action of the conical guide plate 11, forming a third air curtain 50.

[0047] The third air curtain 50 can directly impact the dust and harmful gases generated at the tunneling face 100, rapidly dispersing them and preventing their spread to other areas of the tunnel. Furthermore, the third air curtain 50 can work in conjunction with the second air curtain 40 to comprehensively block and dilute dust and harmful gases from different directions and angles, greatly improving the ventilation system's control over pollutants and effectively reducing dust concentration and harmful gas content within the tunnel.

[0048] Furthermore, the first air curtain 30, the second air curtain 40, and the third air curtain 50 are set at intervals along the tunneling direction of the coal mine roadway, and the third air curtain 50 is set closer to the tunneling face 100 than the second air curtain 40. This can form a multi-level, zoned ventilation control method, avoiding ventilation dead zones and airflow short circuits that may occur when using a single air curtain for ventilation. This allows the ventilation system to operate more efficiently and reduces ventilation energy consumption and costs.

[0049] It should be noted that the positions of the first air curtain 30, the second air curtain 40, and the third air curtain 50 can be set as needed. For example, the first air curtain 30 can be set relatively close to the tunneling face 100 relative to the third air curtain 50, the third air curtain 50 can be set between the first air curtain 30 and the second air curtain 40, and the second air curtain 40 can be located on the outside of the coal mine roadway. In this layout, the first air curtain 30 can quickly dilute and block the newly generated dust and harmful gases, reducing their diffusion outside the roadway. The second air curtain 40, located on the outside of the roadway, mainly serves to stabilize the overall airflow in the roadway and prevent external airflow from interfering with the ventilation effect inside the roadway.

[0050] Of course, in some embodiments, the first air curtain 30 is positioned away from the tunneling face 100 relative to the second air curtain 40, that is, the first air curtain 30 is positioned on the outside of the coal mine roadway.

[0051] like Figure 5 As shown, in some embodiments, the exhaust-type dust collection duct 10 has an air intake 12, and a filter screen 13 is provided at the air intake 12 to perform preliminary filtration of the intake air and intercept larger particulate impurities in the air.

[0052] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] In this invention, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A precise and intelligent air conditioning and dust collection device for a vortex air curtain in a tunneling face, characterized in that, include: A dust collection duct is provided, which extends along the length of the coal mine roadway and is connected to a suction fan. A forced-in ventilation duct is provided parallel to and spaced apart from the exhaust dust collection duct in the coal mine roadway. The forced-in ventilation duct includes a cylinder body, a guide plate, an arc-shaped hood, and a compressed air fan. The cylinder body is connected to the compressed air fan. The cylinder body has an axial opening and multiple side openings. A grid frame is provided between the guide plate and the cylinder body. The guide plate is opposite to the axial opening. Multiple side openings are spaced around the cylinder body. Multiple arc-shaped hoods are provided, each corresponding to one of the side openings, to form a first air curtain in the radial direction of the cylinder body. An intelligent air curtain adjustment component includes a dust monitor, a controller, a driver, and multiple switch plates. Each switch plate corresponds to an air outlet of the arc-shaped air hood. The dust monitor is located inside the coal mine roadway and is used to monitor the dust concentration in the roadway. The dust monitor, the controller, and the driver are electrically connected. The output of the driver is drivenly connected to the switch plates. The controller is used to adjust the air compressor and the driver based on the dust concentration data collected by the dust monitor to adjust the first air curtain. The exhaust-type dust collection duct also includes an annular pipe, a first annular plate, and a second annular plate. The annular pipe is connected to the air compressor and is sleeved on the outside of the exhaust-type dust collection duct. The annular pipe has a first opening. The first annular plate and the second annular plate are disposed opposite each other on both sides of the first opening. The first annular plate and the second annular plate extend along the radial direction of the exhaust-type dust collection duct to form a second air curtain extending along the radial direction of the exhaust-type dust collection duct. The annular tube has a second opening and an arc-shaped plate is provided on the annular tube. The exhaust-type dust collection duct has a conical guide plate. The conical guide plate and the arc-shaped plate are positioned opposite each other on the outside of the second opening to guide the airflow at the second opening toward the tunneling face to form a third air curtain. The third air curtain cooperates with the second air curtain to block and dilute dust and harmful gases from different directions and angles in an all-round way.

2. The precise intelligent air conditioning and dust collection device for the vortex air curtain at the tunneling face according to claim 1, characterized in that, The intelligent air curtain adjustment assembly also includes a linkage sleeve, which is sleeved on the outside of the cylinder and connected to the output end of the driver. Multiple switch plates are spaced apart on the linkage sleeve to achieve synchronous adjustment of multiple arc-shaped air hoods.

3. The precise intelligent air conditioning and dust collection device for the vortex air curtain at the tunneling face according to claim 1, characterized in that, The dust monitor is located inside the coal mine roadway and on the side of the intelligent air curtain adjustment component away from the tunneling face. The dust monitor is used to monitor the dust concentration in the roadway behind the first air curtain.

4. The precise intelligent air conditioning and dust collection device for vortex air curtain at the tunneling face according to claim 1, characterized in that, The air guide plate has a first inclined surface and a second inclined surface. Both the first inclined surface and the second inclined surface extend outward from the central axis of the cylinder and toward the tunneling face to guide the airflow at the axial opening toward the tunneling face.

5. The precise intelligent air conditioning and dust collection device for the vortex air curtain at the tunneling face according to claim 4, characterized in that, The air guide plate includes a first guide plate and a second guide plate, with the first inclined surface disposed on the first guide plate and the second inclined surface disposed on the second guide plate, and the first guide plate and the second guide plate being connected at an angle.

6. The precise intelligent air conditioning and dust collection device for vortex air curtain at the tunneling face according to claim 5, characterized in that, The included angle between the first guide plate and the second guide plate is set to 120° to 160°.

7. The precise intelligent air conditioning and dust collection device for vortex air curtain at the tunneling face according to claim 1, characterized in that, The first air curtain, the second air curtain, and the third air curtain are arranged at intervals along the tunneling direction of the coal mine roadway, and the third air curtain is arranged closer to the tunneling face than the second air curtain.

8. The precise intelligent air conditioning and dust collection device for vortex air curtain at the tunneling face according to claim 1, characterized in that, The exhaust-type dust collection duct has an air intake, and a filter screen is provided at the air intake.

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