Underground coal mine water curtain dust removal device based on dust concentration detection

Abstract

The invention relates to the technical field of coal mine underground water curtain dust removal, in particular to a coal mine underground water curtain dust removal device based on dust concentration detection. Comprising a moving frame, a first fixing frame, a dust concentration sensor, a second fixing frame, a fan frame, flow guide blades, nozzles, a connecting hose, a water tank, a water pump, a controller, a first control assembly, a second control assembly, a flow guide assembly and a regulation and control assembly. The sensor swings to scan space dust concentration, identifies a dust source core area, and adjusts the nozzle angle and the flow guide blade rotating speed in a linkage manner to form a directional water mist curtain wall, new dust cloud is sensed and responded at the first time through active scanning detection, and dust is prevented from escaping through airflow. Tracking type scanning and spraying dust removal are carried out on dust cloud appearing in a certain range through continuous monitoring and scanning, and active tracking type efficient water mist dust removal treatment on dust is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of water curtain dust removal in coal mines, in particular to a water curtain dust removal device in coal mines based on dust concentration detection. Background Art

[0002] In underground coal mines, dust pollution is a core issue that threatens miners' health and production safety. Existing underground coal mine water curtain dust removal devices generally use fixed or low-speed rotating nozzle structures. Their technical features are mainly reflected in the following: The nozzles are installed at a fixed angle and can only cover the preset area; Some devices are equipped with simple rotation mechanisms, but the rotation cycle is long; Lack of real-time dust concentration detection and spatial positioning functions.

[0003] The existing coal mine underground water curtain dust removal device has significant technical defects when dealing with complex dust sources underground, specifically: Traditional water curtain dust removal systems typically consist of a fixed nozzle array, a high-pressure water pump, and a simple diversion device. For example, a typical tunneling face dust removal system features a linear arrangement of nozzles along the tunnel roof, with a fixed spray angle, creating a water curtain barrier through continuous spraying. Some improved systems use a stepper motor to slowly rotate the nozzles, but this rotation cycle is severely mismatched with the dust dispersion rate. This mechanical design leads to three inherent drawbacks: The spatial response delay is long and transient dust sources cannot be captured; the water mist coverage area is fixed and the coverage rate of mobile dust sources is insufficient; continuous full-area spraying causes waste of water resources.

[0004] In underground fully mechanized mining working faces, when the shearer's cutting drum moves, the concentration of respirable dust it generates can rise sharply in a short period of time, and the spread range expands. At this time, the defects of traditional devices are mainly manifested in the following aspects: Fixed nozzles cannot adjust their angles, resulting in complete exposure of high-concentration dust areas; rotating nozzles cannot be aimed at new dust sources in a timely manner due to mechanical inertia, and the response lag time exceeds the dust diffusion cycle; the lack of dust source positioning capability and the blind expansion of the spraying range will exacerbate the problem of water accumulation in the tunnels.

[0005] Therefore, in response to the above problems, a water curtain dust removal device for coal mines based on dust concentration detection is proposed. The device scans the dust concentration in the space through sensor swinging, identifies the core area of ​​the dust source, and adjusts the nozzle angle and the guide blade speed in a linked manner to form a directional water mist curtain wall. The device senses and responds to the newly appeared dust cloud in the first time through active scanning detection, and prevents dust from escaping through airflow. The device tracks and scans the dust cloud appearing within a certain range through continuous monitoring and scanning, and sprays the dust to remove the dust, thereby realizing efficient water mist dust removal treatment with active dust tracking. Summary of the Invention

[0006] In order to overcome the problem that the water curtain nozzle of the water curtain dust removal device in coal mine underground under the existing technology is usually a fixed angle or slowly rotating mechanism, there is a problem that the water curtain cannot accurately and timely cover the dust cloud with rapidly changing position and intensity generated when the underground working equipment moves.

[0007] The technical solution of the present invention is: a water curtain dust removal device for coal mines based on dust concentration detection, comprising a mobile frame, a first fixed frame, a dust concentration sensor, a second fixed frame, a fan frame, a guide vane, a nozzle, a connecting hose, a water tank, a water pump, a controller, a first control component, a second control component, a guide component and a regulating component, a first fixed frame is arranged below the mobile frame, a dust concentration sensor is arranged outside the first fixed frame, a second fixed frame is arranged below the mobile frame, a fan frame is arranged outside the second fixed frame, a guide vane is arranged inside the fan frame, and two groups of nozzles are arranged outside the fan frame, and the ports of the two groups of nozzles are respectively located at the wind A connecting hose is provided at the input end of the nozzle above and below the fan frame, a water tank is provided on one side of the first fixed frame, two sets of water pumps are provided above the water tank, the input end of the water pump extends into the water tank, the output end of the water pump and the connecting hose are connected to each other, the water pump and the controller are connected through a wireless network, a controller is provided on the other side of the first fixed frame, the controller and the dust concentration sensor are connected through a wireless network, a first control component is provided on one side of the first fixed frame, a second control component is provided on one side of the second fixed frame, a guide component is provided above the fan frame, and two sets of control components are provided on the side of the fan frame, and the two sets of control components correspond to the two sets of nozzles respectively.

[0008] Preferably, the first control component, the second control component, the guide component and the regulating component are respectively controlled by the controller to adjust the angles of the dust concentration sensor, the nozzle and the fan frame, and to start and stop the rotation of the guide blades. The dust concentration within the corresponding angle range is detected by the dust concentration sensor through the light scattering principle detector, and the dust concentration within the swing angle range is scanned and detected by controlling the reciprocating swing of the dust concentration sensor. The real-time dust concentration data is transmitted to the controller via a wireless signal. The controller reads the real-time dust concentration value and compares the dust concentration reading at the current angle in real time during the scanning process. When the dust concentration at a certain angle position is detected to be significantly higher than the preset threshold and higher than its adjacent position, the swing scanning of the dust concentration sensor is stopped immediately, and the angles of the fan frame and the nozzle are adjusted to lock the angle at this position. At the same time, the water pump is started, and high-pressure water is pumped along the two groups The connected hose is transported to the nozzle for spraying, and the water mist covers the core area of ​​the currently detected dust cloud. By controlling the rotation of the guide blades, the dust is gathered to the axial position of the guide fan blade rotation axis to prevent dust from escaping, so that the water mist can better cover the dust in the current area. At the same time, the dust that is swept to the top of the fan frame by the airflow is covered by the water mist sprayed from another set of nozzles facing the top of the fan frame. As the dust source weakens, the dust concentration at the locking point decreases. When the concentration is lower than the threshold and stabilizes for a period of time, the controller turns off the water pump and stops driving the guide blades to rotate, and swings the dust concentration sensor to scan again to find the next target, so as to perceive and respond to the newly emerging dust cloud in the first time through active scanning detection, and prevent dust from escaping through airflow. Through continuous monitoring and scanning, the dust cloud appearing within a certain range is tracked and scanned and sprayed for dust removal, realizing efficient water mist dust removal treatment with active dust tracking.

[0009] Preferably, the first control component includes a first motor and a first rotating shaft. The first motor is provided on one side of the first fixing frame. The first rotating shaft is provided at the output end of the first motor. The first motor and the controller are connected via a wireless network.

[0010] Preferably, the first control assembly further includes a second connecting plate, the outer keyway of the first rotating shaft is connected to the first connecting plate, and the first connecting plate and the dust concentration sensor are connected to each other.

[0011] Preferably, the second control component includes a second motor and a second rotating shaft. The second motor is provided on one side of the second fixing frame. The second rotating shaft is provided at the output end of the second motor. The second motor and the controller are connected via a wireless network.

[0012] Preferably, the second control assembly further includes a second connecting plate, the outer keyway of the second rotating shaft is connected to the second connecting plate, and the second connecting plate and the fan frame are connected to each other.

[0013] Preferably, the guide assembly includes a guide motor and a first connecting shaft. The guide motor is arranged above the fan frame. The output end of the guide motor is provided with a first connecting shaft. The first connecting shaft is connected to the keyway of the guide blade. The guide motor and the controller are connected via a wireless network.

[0014] Preferably, the regulating component includes a fixing block and a regulating motor. The fixing block is provided on one side of the fan frame, and the regulating motor is provided on one side of the fixing block. The regulating motor and the controller are connected via a wireless network.

[0015] Preferably, the regulating assembly further includes a second connecting shaft and a connecting frame. The output end of the regulating motor is provided with the second connecting shaft. The outer keyway of the second connecting shaft is connected to the connecting frame. The connecting frame and the nozzle are connected to each other.

[0016] Preferably, a mounting assembly is provided above the mobile frame, and the mounting assembly includes a mounting frame, a guide rod, a fixing bolt and a mounting plate. A mounting frame is provided above the mobile frame, a guide rod is provided on the inner side of the mounting frame, the guide rod and the mobile frame are slidingly connected, a fixing bolt is provided on the inner side of the mobile plate, the fixing bolt and the mobile frame are threadedly connected, and two sets of mounting plates are provided on the side of the mounting frame.

[0017] As a preference, the controller performs the following specific steps when executing control: S1: Start the reciprocating swing scanning of the dust concentration sensor, detect the dust concentration data within its swing angle range in real time, and transmit the data to the controller via the wireless network; S2: The controller compares the dust concentration readings at the current angle in real time. If the dust concentration value at a certain angle position is detected and satisfies both: (a) Significantly higher than the preset threshold; (b) a concentration higher than that of its neighboring locations; The dust concentration sensor will immediately stop its swing scanning and generate a lock instruction; S3: Execute the following linkage operations according to the lock instruction: (c) adjusting the angle of the fan frame and the nozzle by the second control assembly so that the fan frame and the nozzle are aligned with the peak position of the dust concentration; (d) Start the water pump and guide assembly so that high-pressure water is delivered to the nozzle through the connecting hose to spray water mist, and at the same time, the guide blades rotate to gather the dust axially toward the fan frame; S4: Continuously monitor the dust concentration at the locked position. If the concentration value continues to be lower than the preset threshold and remains stable for a set period of time, turn off the water pump and the diversion component, and return to step S1 to restart the scan.

[0018] Beneficial effects of the present invention: The present invention controls the first control component, the second control component, the guide component and the regulating component respectively through a controller to adjust the angles of the dust concentration sensor, the nozzle and the fan frame, and to start and stop the rotation of the guide blades. The dust concentration within the corresponding angle range is detected by the dust concentration sensor through the light scattering principle detector, and the dust concentration within the swing angle range is scanned and detected by controlling the reciprocating swing of the dust concentration sensor. The real-time dust concentration data is transmitted to the controller through a wireless signal. The controller reads the real-time dust concentration value and compares the dust concentration reading at the current angle in real time during the scanning process. When it is detected that the dust concentration at a certain angle position is significantly higher than the preset threshold and higher than its adjacent position, the swing scanning of the dust concentration sensor is stopped immediately, and the angles of the fan frame and the nozzle are adjusted to lock the angle at this position. At the same time, the water pump is started, and high-pressure water is pumped along the two connected groups. The hose is connected to the nozzle for spraying, and the water mist covers the core area of ​​the currently detected dust cloud. By controlling the rotation of the guide blades, the dust is gathered to the axial position of the guide fan blade rotation axis to prevent dust from escaping, so that the water mist can better cover the dust in the current area. At the same time, the dust that is swept to the top of the fan frame by the airflow is covered by the water mist sprayed from another set of nozzles above the fan frame. As the dust source weakens, the dust concentration at the locking point decreases. When the concentration is lower than the threshold and stabilizes for a period of time, the controller turns off the water pump and stops driving the guide blades to rotate, and swings the dust concentration sensor to scan again to find the next target, so as to perceive and respond to the newly emerging dust cloud in the first time through active scanning detection, and prevent dust from escaping through airflow. Through continuous monitoring and scanning, the dust cloud appearing within a certain range is tracked and scanned and sprayed for dust removal, realizing efficient water mist dust removal treatment with active dust tracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a first three-dimensional structural schematic diagram of a water curtain dust removal device for an underground coal mine based on dust concentration detection according to the present invention; Figure 2 Shown is a second three-dimensional structural schematic diagram of the coal mine underground water curtain dust removal device based on dust concentration detection of the present invention; Figure 3 Shown is a schematic diagram of the first cross-sectional structure of the water curtain dust removal device for underground coal mines based on dust concentration detection of the present invention; Figure 4 Shown is a schematic diagram of the second cross-sectional structure of the water curtain dust removal device for underground coal mines based on dust concentration detection of the present invention; Figure 5 Shown is a third three-dimensional schematic diagram of the coal mine underground water curtain dust removal device based on dust concentration detection of the present invention; Figure 6 Shown is a fourth three-dimensional schematic diagram of the coal mine underground water curtain dust removal device based on dust concentration detection of the present invention; Explanation of the accompanying drawings: 1. Mobile frame; 2. First fixed frame; 3. Dust concentration sensor; 4. Second fixed frame; 5. Fan frame; 6. Guide blade; 7. Nozzle; 8. Connecting hose; 9. Water tank; 10. Water pump; 11. Controller; 101. First motor; 102. First rotating shaft; 103. First connecting plate; 201. Second motor; 202. Second rotating shaft; 203. Second connecting plate; 301. Guide motor; 302. First connecting shaft; 401. Fixed block; 402. Control motor; 403. Second connecting shaft; 404. Connecting frame; 501. Mounting frame; 502. Guide rod; 503. Fixing bolt; 504. Mounting plate. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and examples.

[0021] See also Figure 1 and Figure 2The present invention provides an embodiment: a water curtain dust removal device for an underground coal mine based on dust concentration detection, comprising a mobile frame 1, a first fixed frame 2, a dust concentration sensor 3, a second fixed frame 4, a fan frame 5, a guide blade 6, a nozzle 7, a connecting hose 8, a water tank 9, a water pump 10, a controller 11, a first control component, a second control component, a guide component and a regulating component. The first fixed frame 2 is arranged below the mobile frame 1, the dust concentration sensor 3 is arranged outside the first fixed frame 2, the second fixed frame 4 is arranged below the mobile frame 1, the fan frame 5 is arranged outside the second fixed frame 4, the guide blade 6 is arranged on the inner side of the fan frame 5, and two groups of nozzles 7 are arranged on the outer side of the fan frame 5, and the ports of the two groups of nozzles 7 are respectively located above the fan frame 5. and below, the input end of the nozzle 7 is provided with a connecting hose 8, a water tank 9 is provided on one side of the first fixed frame 2, and two groups of water pumps 10 are provided above the water tank 9. The input end of the water pump 10 extends into the inside of the water tank 9, and the output end of the water pump 10 and the connecting hose 8 are connected to each other. The water pump 10 and the controller 11 are connected through a wireless network. A controller 11 is provided on the other side of the first fixed frame 2, and the controller 11 and the dust concentration sensor 3 are connected through a wireless network. A first control component is provided on one side of the first fixed frame 2, and a second control component is provided on one side of the second fixed frame 4. A guide component is provided above the fan frame 5, and two groups of regulating components are provided on the side of the fan frame 5. The two groups of regulating components correspond to the two groups of nozzles 7 respectively, and are respectively controlled by the controller 11 The first control component, the second control component, the guide component and the regulating component are used to adjust the angles of the dust concentration sensor 3, the nozzle 7 and the fan frame 5, and to start and stop the rotation of the guide blade 6. The dust concentration sensor 3 detects the dust concentration within the corresponding angle range through the light scattering principle detector, and controls the dust concentration within the swing angle range to scan and detect the dust concentration by controlling the reciprocating swing of the dust concentration sensor 3. The real-time dust concentration data is transmitted to the controller 11 via a wireless signal. The controller 11 reads the real-time dust concentration value and compares the dust concentration reading at the current angle in real time during the scanning process. When it is detected that the dust concentration at a certain angle position is significantly higher than the preset threshold and higher than its adjacent position, the swing of the dust concentration sensor 3 is stopped immediately. Scan, and adjust the angles of the fan frame 5 and the nozzle 7, lock the angle at this position, and start the water pump 10 at the same time. High-pressure water is transported to the nozzle 7 along the two sets of connecting hoses 8 and sprayed out. The water mist covers the core area of ​​the dust cloud currently detected. By controlling the rotation of the guide blades, the dust is gathered toward the axial position of the guide fan blade rotation axis to prevent dust from escaping, so that the water mist can better cover the dust in the current area. At the same time, the dust that is rolled to the top of the fan frame 5 by the airflow is covered by the water mist sprayed from another set of nozzles 7 above the fan frame 5. As the dust source weakens, the dust concentration at the locking point decreases. When the concentration is lower than the threshold and stabilizes for a period of time, the controller 11 turns off the water pump 10 and stops driving the guide blades 6 to rotate, and swings the dust concentration sensor 3 to scan again to find the next target.

[0022] See also Figure 3 and Figure 4 In this embodiment, the first control component includes a first motor 101 and a first rotating shaft 102. The first motor 101 is provided on one side of the first fixed frame 2, and the output end of the first motor 101 is provided with the first rotating shaft 102. The first motor 101 and the controller 11 are connected through a wireless network. The first control component also includes a second connecting plate 203. The outer keyway of the first rotating shaft 102 is connected with the first connecting plate 103. The first connecting plate 103 and the dust concentration sensor 3 are connected to each other. When in use, the first rotating shaft 102 is driven to rotate by starting the first motor 101, and the first connecting plate 103 is driven to rotate by the rotation of the first rotating shaft 102. The detection angle of the dust concentration sensor 3 can be adjusted by rotating the first connecting plate 103. The second control component includes a second motor 201 and a second rotating shaft 202. The second motor 201 is provided on one side of the second fixed frame 4, and the output end of the second motor 201 is provided with the second rotating shaft 202. The second The motor 201 and the controller 11 are connected via a wireless network. The second control component also includes a second connecting plate 203. The outer keyway of the second rotating shaft 202 is connected to the second connecting plate 203. The second connecting plate 203 and the fan frame 5 are connected to each other. When in use, the second rotating shaft 202 is driven to rotate by starting the second motor 201, and the second connecting plate 203 is driven to rotate by the rotation of the second rotating shaft 202. The angle of the fan frame 5 can be adjusted by rotating the second connecting plate 203. The guide assembly includes a guide motor 301 and a first connecting shaft 302. The guide motor 301 is provided above the fan frame 5. The output end of the guide motor 301 is provided with a first connecting shaft 302. The first connecting shaft 302 is keyway connected to the guide blade 6. The guide motor 301 and the controller 11 are connected via a wireless network. When in use, the first connecting shaft 302 is driven to rotate by starting the guide motor 301, and the guide blade 6 is driven to rotate by the rotation of the first connecting shaft 302.

[0023] See also Figure 5 and Figure 6In this embodiment, the regulating component includes a fixed block 401 and a regulating motor 402. The fixed block 401 is provided on one side of the fan frame 5, and the regulating motor 402 is provided on one side of the fixed block 401. The regulating motor 402 and the controller 11 are connected through a wireless network. The regulating component also includes a second connecting shaft 403 and a connecting frame 404. The output end of the regulating motor 402 is provided with the second connecting shaft 403. The outer keyway of the second connecting shaft 403 is connected to the connecting frame 404. The connecting frame 404 and the nozzle 7 are connected to each other. When in use, the second connecting shaft 403 is driven to rotate by starting the regulating motor 402, and the connecting frame 404 is driven to rotate by the rotation of the second connecting shaft 403. The angle of the nozzle 7 is adjusted by rotating the connecting frame 404. , a mounting assembly is provided above the mobile frame 1, and the mounting assembly includes a mounting frame 501, a guide rod 502, a fixing bolt 503 and a mounting plate 504. A mounting frame 501 is provided above the mobile frame 1, and a guide rod 502 is provided on the inner side of the mounting frame 501, and the guide rod 502 and the mobile frame 1 are slidably connected, and a fixing bolt 503 is provided on the inner side of the mobile plate, and the fixing bolt 503 is threadedly connected to the mobile frame 1, and two groups of mounting plates 504 are provided on the side of the mounting frame 501. When in use, the device is installed and fixed on the top surface of the tunnel by the two groups of mounting plates 504, and the position of the mobile frame 1 is fine-tuned by pushing the mobile frame 1 to slide along the guide rod 502, and the position of the mobile frame 1 is fixed by rotating and tightening the fixing bolt 503.

[0024] The specific steps of the controller 11 when executing control are as follows: S1: Start the reciprocating swing scanning of the dust concentration sensor 3, detect the dust concentration data within the swing angle range in real time, and transmit the data to the controller 11 via the wireless network; S2: The controller 11 compares the dust concentration readings at the current angle in real time. If the dust concentration value at a certain angle position is detected to satisfy both: (a) Significantly higher than the preset threshold; (b) a concentration higher than that of its neighboring locations; The oscillating scanning of the dust concentration sensor 3 is immediately stopped, and a locking instruction is generated; S3: Execute the following linkage operations according to the lock instruction: (c) adjusting the angles of the fan frame 5 and the nozzle 7 by the second control assembly so as to align them with the peak position of the dust concentration; (d) starting the water pump 10 and the guide assembly so that high-pressure water is delivered to the nozzle 7 through the connecting hose 8 to spray water mist, while the guide blades 6 rotate to axially gather the dust toward the fan frame 5; S4: Continuously monitor the dust concentration at the locked position. If the concentration value is continuously lower than the preset threshold and remains stable for a set period of time, turn off the water pump 10 and the diversion component, and return to step S1 to restart the scan.

[0025] Before using this device, the following assembly and initialization steps must be completed: first, fix the mobile frame 1 to the top of the coal mine tunnel through the installation component. The specific operation is: connect the installation frame 501 to the tunnel top surface with bolts through the mounting plates 504 on both sides, push the mobile frame 1 to slide to the preset position along the guide rod 502, and rotate the fixing bolts 503 to complete the mechanical locking; install the first fixed frame 2 and the second fixed frame 4 in sequence under the mobile frame 1, the outer side of the first fixed frame 2 is connected to the dust concentration sensor 3 through the first control component, and the outer side of the second fixed frame 4 is connected to the fan frame 5 through the second control component; install the two sets of nozzles 7 on the upper and lower sides of the fan frame 5 respectively, and connect them to the output end of the water pump 10 above the water tank 9 through the connecting hose 8 to ensure the sealing of the water channel; install the guide blade 6 on the inner side of the fan frame 5, and realize the rotation drive through the guide component; When the device is running, the controller 11 performs the following automated operation process: During the spatial scanning phase, the dust concentration sensor 3 is driven by the first control component to perform a reciprocating swing scan. The sensor uses the light scattering principle to detect the dust concentration at each angle in real time, and the data is wirelessly transmitted to the controller 11. The controller 11 has a built-in algorithm that dynamically analyzes the scan data. When it detects that the dust concentration at a certain angle simultaneously meets the "exceeds the preset threshold" and "is higher than the concentration in the adjacent area", the locking mechanism is immediately triggered. Directional dust removal stage: The fan frame 5 is driven to rotate by the second control component so that the nozzle group 7 is aimed at the peak area of ​​dust concentration; The water pump 10 is started to pressurize the clean water in the water tank 9 and deliver it to the nozzle 7, forming a conical water mist curtain wall. At the same time, the guide assembly drives the guide blades 6 to rotate, generating a spiral airflow in the direction of the axis of the fan frame 5, forcing the dust to gather in the water mist coverage area. The control component adjusts the angle of the nozzle 7 in real time according to the dust diffusion direction. The lower nozzle 7 keeps spraying to cover the main dust source area, and the upper nozzle 7 sprays to form a secondary interception curtain. The following intelligent control strategies are implemented during the continuous operation of the device: Concentration monitoring and exit mechanism: The controller 11 continuously collects dust concentration data in the locked area. When the detection value is lower than the threshold for a period of time, it automatically performs the following operations: Gradually reduce the output pressure of the water pump 10 to the standby state; Stop the guide blade 6 from rotating and reset the angle of the fan frame 5; Restart the dust concentration sensor 3 to scan the entire space.

[0026] Through the above steps, the controller 11 is used to control the first control component, the second control component, the guide component and the regulating component respectively to adjust the angle of the dust concentration sensor 3, the nozzle 7 and the fan frame 5, and to start and stop the rotation of the guide blade 6. The dust concentration sensor 3 uses the light scattering principle to detect the dust concentration within the corresponding angle range, and the dust concentration sensor 3 is controlled to swing back and forth to perform scanning detection on the dust concentration within its swing angle range. The real-time dust concentration data is transmitted to the controller 11 using a wireless signal. The controller 11 reads the real-time dust concentration value and compares the dust concentration reading at the current angle in real time during the scanning process. When the dust concentration at a certain angle position is detected to be significantly higher than the preset threshold and higher than its adjacent position, the swing scanning of the dust concentration sensor 3 is stopped immediately, and the angle of the fan frame 5 and the nozzle 7 is adjusted to lock the angle at this position. At the same time, the water pump 10 is started, and the high pressure The water is transported to the nozzle 7 along the two sets of connecting hoses 8 and sprayed out. The water mist covers the core area of ​​the dust cloud currently detected. The dust is gathered toward the axial position of the guide fan blade rotating shaft by controlling the rotation of the guide fan blade to prevent the dust from escaping, so that the water mist can better cover the dust in the current area. At the same time, the dust that is rolled to the top of the fan frame 5 by the airflow is covered by the water mist sprayed by another set of nozzles 7 facing the top of the fan frame 5. As the dust source weakens, the dust concentration at the locking point decreases. When the concentration is lower than the threshold and stabilizes for a period of time, the controller 11 turns off the water pump 10 and stops driving the guide blades 6 to rotate, and swings the dust concentration sensor 3 again to scan and find the next target, thereby using active scanning detection to perceive and respond to the newly appeared dust cloud in the first time, and using airflow to prevent dust from escaping. Continuous monitoring and scanning are used to track and scan and spray the dust cloud appearing within a certain range, thereby realizing efficient water mist dust removal treatment with active dust tracking.

[0027] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A water curtain dust removal device for an underground coal mine based on dust concentration detection, comprising a movable frame (1), characterized in that: The mobile frame (1) further comprises a first fixed frame (2), a dust concentration sensor (3), a second fixed frame (4), a fan frame (5), a guide blade (6), a nozzle (7), a connecting hose (8), a water tank (9), a water pump (10), a controller (11), a first control component, a second control component, a guide component and a regulating component. The first fixed frame (2) is provided below the mobile frame (1), the dust concentration sensor (3) is provided outside the first fixed frame (2), the second fixed frame (4) is provided below the mobile frame (1), the fan frame (5) is provided outside the second fixed frame (4), the guide blade (6) is provided inside the fan frame (5), and two groups of nozzles (7) are provided outside the fan frame (5), the ports of the two groups of nozzles (7) are respectively located above and below the fan frame (5), and the nozzles (7) The input end of the first fixed frame (2) is provided with a connecting hose (8), a water tank (9) is provided on one side of the first fixed frame (2), two groups of water pumps (10) are provided above the water tank (9), the input end of the water pump (10) extends into the interior of the water tank (9), the output end of the water pump (10) and the connecting hose (8) are connected to each other, the water pump (10) and the controller (11) are connected via a wireless network, the other side of the first fixed frame (2) is provided with a controller (11), the controller (11) and the dust concentration sensor (3) are connected via a wireless network, a first control component is provided on one side of the first fixed frame (2), a second control component is provided on one side of the second fixed frame (4), a flow guide component is provided above the fan frame (5), and two groups of control components are provided on the side of the fan frame (5), and the two groups of control components correspond to the two groups of nozzles (7) respectively.

2. The coal mine underground water curtain dust removal device based on dust concentration detection according to claim 1 is characterized in that: The first control component comprises a first motor (101) and a first rotating shaft (102); the first motor (101) is provided on one side of the first fixing frame (2); the first rotating shaft (102) is provided at the output end of the first motor (101); and the first motor (101) and the controller (11) are connected via a wireless network.

3. The coal mine underground water curtain dust removal device based on dust concentration detection according to claim 2 is characterized in that: The first control component further comprises a first connecting plate (103), the outer keyway of the first rotating shaft (102) is connected to the first connecting plate (103), and the first connecting plate (103) and the dust concentration sensor (3) are connected to each other.

4. The coal mine underground water curtain dust removal device based on dust concentration detection according to claim 1 is characterized in that: The second control component comprises a second motor (201) and a second rotating shaft (202); the second motor (201) is provided on one side of the second fixing frame (4); the second rotating shaft (202) is provided at the output end of the second motor (201); and the second motor (201) and the controller (11) are connected via a wireless network.

5. The coal mine underground water curtain dust removal device based on dust concentration detection according to claim 4 is characterized in that: The second control assembly further comprises a second connecting plate (203), the outer keyway of the second rotating shaft (202) is connected to the second connecting plate (203), and the second connecting plate (203) and the fan frame (5) are connected to each other.

6. The coal mine underground water curtain dust removal device based on dust concentration detection according to claim 1 is characterized in that: The guide assembly comprises a guide motor (301) and a first connecting shaft (302); the guide motor (301) is arranged above the fan frame (5); the output end of the guide motor (301) is provided with the first connecting shaft (302); the first connecting shaft (302) and the guide blade (6) are key-connected; and the guide motor (301) and the controller (11) are connected via a wireless network.

7. The coal mine underground water curtain dust removal device based on dust concentration detection according to claim 1 is characterized in that: The control component comprises a fixed block (401) and a control motor (402). The fixed block (401) is provided on one side of the fan frame (5), and the control motor (402) is provided on one side of the fixed block (401). The control motor (402) and the controller (11) are connected via a wireless network.

8. The coal mine underground water curtain dust removal device based on dust concentration detection according to claim 7 is characterized in that: The regulating assembly further comprises a second connecting shaft (403) and a connecting frame (404); the output end of the regulating motor (402) is provided with the second connecting shaft (403); the outer keyway of the second connecting shaft (403) is connected to the connecting frame (404); and the connecting frame (404) and the nozzle (7) are connected to each other.

9. The coal mine underground water curtain dust removal device based on dust concentration detection according to claim 1, characterized in that: A mounting assembly is provided above the mobile frame (1), and the mounting assembly includes a mounting frame (501), a guide rod (502), a fixing bolt (503) and a mounting plate (504). The mounting frame (501) is provided above the mobile frame (1), a guide rod (502) is provided on the inner side of the mounting frame (501), the guide rod (502) and the mobile frame (1) are slidably connected, a fixing bolt (503) is provided on the inner side of the mobile plate, and the fixing bolt (503) and the mobile frame (1) are threadedly connected, and two groups of mounting plates (504) are provided on the side of the mounting frame (501).

10. The coal mine underground water curtain dust removal device based on dust concentration detection according to claim 1, characterized in that: The specific steps of the controller (11) when executing control are as follows: S1: Start the reciprocating swing scanning of the dust concentration sensor (3), detect the dust concentration data within the swing angle range in real time, and transmit the data to the controller (11) via a wireless network; S2: The controller (11) compares the dust concentration readings at the current angle in real time. If the dust concentration value at a certain angle position satisfies both of the following conditions: (a) Significantly higher than the preset threshold; (b) a concentration higher than that of its neighboring locations; The swing scanning of the dust concentration sensor (3) is immediately stopped, and a locking instruction is generated; S3: Execute the following linkage operations according to the lock instruction: (c) adjusting the angles of the fan frame (5) and the nozzle (7) through the second control component so as to align them with the peak position of the dust concentration; (d) starting the water pump (10) and the guide assembly so that high-pressure water is delivered to the nozzle (7) through the connecting hose (8) to spray out water mist, while the guide blades (6) rotate to gather the dust axially toward the fan frame (5); S4: Continuously monitor the dust concentration at the locked position. If the concentration value is continuously lower than the preset threshold and remains stable for a set period of time, turn off the water pump (10) and the diversion component, and return to step S1 to restart the scan.

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