Mining mine intelligent ventilation device and using method thereof

Abstract

The invention relates to the technical field of mining ventilation, in particular to a mining mine intelligent ventilation device which comprises a fan body providing power, a duckbilled air outlet pipe is fixedly installed at an air outlet of the fan body through a flange, and a flow guide plate used for guiding the airflow direction through the coanda effect is fixedly installed at the top of the duckbilled air outlet pipe through a flange. A plurality of through holes are formed in the middle-rear section of the guide plate in a penetrating mode, and a plurality of air collecting bins are fixedly installed on the concave side of the middle-rear section of the guide plate. The guide plate is arranged on the side edge of air flow, the direction of the air flow is changed through the coanda effect, the air flow moves close to the wall, and the ventilation distance is increased; by matching with the structures such as the air collecting bin, the air conveying pipe and the drainage cover, secondary utilization of high-pressure airflow of the fan is achieved, stable negative pressure is formed in the air collecting bin, air on the guide plate and the side wall of the tunnel is sucked to the concave side through the through holes, the coanda effect is remarkably enhanced, the airflow wall attaching stability is improved, and ventilation dead corners are effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of mining ventilation technology, specifically to an intelligent ventilation device for mining shafts and its usage method. Background Technology

[0002] Mine ventilation systems are a crucial component of mine safety. Their core function lies in using the powerful force generated by the main ventilation fan to compel fresh air from the surface into the intricate network of underground tunnels along the intake shaft. This system acts like a sophisticated air navigation system, precisely delivering clean airflow to every mining face and work chamber through the control of structures such as air doors, air walls, and air bridges. This directly benefits miners' breathing and equipment operation. Simultaneously, it continuously dilutes, carries, and ultimately removes toxic and harmful substances such as methane, dust, and fumes accumulated during production, as well as geothermal heat and moisture. Through this forced and uninterrupted air replacement and circulation, the ventilation system effectively controls the underground climate, fundamentally preventing major risks such as gas poisoning, explosions, fires, and heat hazards. It is an indispensable life-saving project for ensuring mine safety and the health of personnel.

[0003] In the field of mine ventilation, direct-blowing fans have become the basic equipment in existing mine ventilation systems due to their simple structure and convenient installation. Their core working mode is to directly blow air radially into the mine tunnel through the fan impeller, relying on the momentum of the airflow to achieve ventilation. However, this type of fan has some defects under actual mine working conditions. The specific technical problems are as follows:

[0004] 1. The outlet of the direct-blowing fan is mostly circular, and the exhaust airflow is radially disordered and cannot form a directional flow along the wall. At the bends, forks and top areas of the mine tunnel, airflow eddies or stagnant areas are easily generated, which prevents harmful gases and dust from being discharged in time and accumulates in the long term, forming a safety hazard.

[0005] 2. Direct-blowing fans lack a dedicated airflow guiding structure, making it impossible to guide airflow to adhere to the mine tunnel roof. They completely fail to utilize the Coanda effect's wall-attaching enhancement effect, resulting in most of the airflow dissipating in the middle of the tunnel and a short effective ventilation distance. Summary of the Invention

[0006] To address the aforementioned problems, this application provides an intelligent ventilation device for mining operations and its usage method, solving the issues of low air circulation efficiency and short ventilation distance of direct-blowing fans.

[0007] This invention proposes an intelligent ventilation device for mining shafts, including a fan body that provides power, a duckbill air outlet fixedly installed at the air outlet of the fan body via a flange, and a guide plate for guiding the airflow direction by utilizing the Coanda effect fixedly installed at the top of the duckbill air outlet via a flange.

[0008] The middle and rear section of the guide plate has multiple through holes, and multiple air collection chambers are fixedly installed on the concave side of the middle and rear section of the guide plate. High-speed airflow flows inside the air collection chambers, which makes the air pressure on the concave side lower than the air pressure of the guide plate and the tunnel sidewall, making it easier for the main airflow ejected by the blower body to adhere to the outside of the guide plate.

[0009] Preferably, a mounting bracket is fixedly installed on the outside of the fan body, and the mounting bracket is connected to the inner wall of the tunnel through an angle-adjustable fixed bracket.

[0010] Preferably, the gas collection chamber is located below the through hole, with an air inlet pipe fixedly installed on one side and an air vent pipe fixedly installed on the other side, the air vent pipe being parallel to the tangent at the end of the guide plate.

[0011] Preferably, an air supply pipe is fixedly installed through the outer side of the air outlet pipe of the fan body, a horn-shaped flow guide is fixedly installed at the bottom of the air supply pipe, and multiple conveying pipes are fixedly installed at the end of the air supply pipe, each conveying pipe being connected to a certain group of air inlet pipes.

[0012] Preferably, a one-way valve and a micro regulating valve are fixedly installed on the outside of the delivery pipe, with the one-way valve being further away from the gas delivery pipe than the micro regulating valve.

[0013] Preferably, a control unit and a communication unit are fixedly installed on the outside of the fan body casing. The communication unit is electrically connected to the mine central control system, and the control unit is electrically connected to the fan body.

[0014] Preferably, an airflow wall adhesion sensor is embedded in the rear edge of the air guide plate, and the airflow wall adhesion sensor is electrically connected to the control unit.

[0015] Preferably, a laser irradiation unit is fixedly installed at the end edge of the guide plate, and the laser irradiation unit is electrically connected to the control unit.

[0016] The present invention also provides a method for using an intelligent ventilation device in a mining mine, comprising the following steps:

[0017] S1. Installation and calibration of the device: Fix the blower body to the preset position in the mine tunnel using the mounting bracket, ensure that the duckbill air outlet pipe faces the ventilation direction, start the laser irradiation unit, calibrate the angle between the end of the guide plate and the inner wall of the mine tunnel according to the laser beam, and adjust the installation angle of the guide plate to meet the installation requirements.

[0018] S2, Ventilation Start-up: The fan body is started by the control unit. The airflow output by the fan body is compressed into a flat high-speed airflow through the duckbill air outlet pipe. Under the guidance of the guide plate, it flows into the depth of the mine tunnel. At the same time, part of the high-pressure airflow at the air outlet of the fan body enters the air delivery pipe through the diversion hood and is then transported to the gas collection chamber through the delivery pipe.

[0019] S3, Airflow regulation: The control unit controls the micro regulating valve to open to the initial opening. After the high-pressure airflow enters the gas collection chamber, it forms a negative pressure. The air pressure of the guide plate and the tunnel side wall is drawn to the concave side through the through hole, which enhances the airflow wall-adhering effect. The airflow in the gas collection chamber is discharged through the vent pipe and merges with the main airflow.

[0020] S4. Real-time monitoring and intelligent adjustment: The airflow wall-attachment sensor monitors the pressure difference between the convex and concave sides of the guide vane in real time and transmits the monitoring data to the control unit. The control unit analyzes the monitoring data through a built-in algorithm. If the pressure difference is lower than the set threshold, it indicates that the airflow has a tendency to detach. The control unit increases the opening of the micro-adjustment valve and can also appropriately increase the speed of the fan body to enhance the negative pressure suction effect and the main airflow energy. If the pressure difference is higher than the set threshold, it indicates that the airflow adheres to the wall stably. The control unit reduces the opening of the micro-adjustment valve to reduce energy consumption.

[0021] S5. Remote monitoring: The control unit transmits the fan operating parameters and airflow wall monitoring data to the mine central control system in real time through the communication unit. The staff can remotely view the operating status of the device through the central control system and issue control commands through the central control system when necessary to achieve remote control.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] First, this invention sets a guide plate on the side of the airflow to change the direction of the airflow using the Coanda effect, causing the airflow to move along the wall and increasing the ventilation distance. Furthermore, by setting through holes in the middle and rear section of the guide plate, and in conjunction with structures such as an air collection chamber, air supply pipe, and flow hood, the high-pressure airflow of the fan is reused, forming a stable negative pressure in the air collection chamber. Through the through holes, the air from the guide plate and the side wall of the tunnel is drawn to the concave side, which significantly enhances the Coanda effect, improves the stability of the airflow along the wall, and effectively avoids the generation of ventilation dead zones.

[0024] Secondly, the addition of airflow wall adhesion sensors and control units enables real-time monitoring and intelligent control of airflow wall adhesion status. The control unit can dynamically adjust the fan speed and micro-regulating valve opening based on monitoring data to adapt to different mine working conditions, reducing energy consumption while ensuring ventilation effect and improving the intelligence level of the device.

[0025] Third, a laser irradiation unit is set at the end of the guide plate, which facilitates angle calibration during device installation and daily inspection, solving the problems of low accuracy and cumbersome operation of traditional manual measurement. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 A schematic diagram of the overall structure of an intelligent ventilation device for mining shafts and its usage method provided by the present invention;

[0028] Figure 2 A schematic diagram of the hood connection for an intelligent ventilation device for mining shafts and its usage method provided by the present invention;

[0029] Figure 3 A schematic diagram of the guide plate connection for an intelligent ventilation device for mining shafts and its usage method provided by the present invention;

[0030] Figure 4 This is a schematic diagram of the gas collection chamber connection for an intelligent ventilation device for mining shafts and its usage method provided by the present invention.

[0031] In the picture:

[0032] 1. Fan body; 2. Mounting bracket; 3. Guide plate; 4. Control unit; 5. Communication unit; 6. Through hole; 7. Laser irradiation unit; 8. Air collection chamber; 9. Exhaust pipe; 10. Inlet pipe; 11. Delivery pipe; 12. One-way valve; 13. Miniature regulating valve; 14. Air delivery pipe; 15. Drainage hood; 16. Duckbill outlet pipe; 17. Airflow wall adhesion sensor. Detailed Implementation

[0033] To make the objectives, technical means, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0035] like Figure 1 As shown, this embodiment of the invention provides an intelligent ventilation device for mining shafts, including a fan body 1 that provides power. The fan body 1 is a mine explosion-proof axial flow fan with a rated air volume of 10,000-15,000 m³ / h. An installation bracket 2 is fixedly installed on the outside of the fan body 1. The installation bracket 2 is made of Q235 steel to ensure load-bearing stability. The installation bracket 2 is connected to the inner wall of the tunnel through an angle-adjustable fixed bracket.

[0036] Furthermore, such as Figure 1 As shown, the air outlet of the fan body 1 is fixedly installed with a duckbill air outlet pipe 16 via a flange. The inlet section to outlet section of the duckbill air outlet pipe 16 has a contraction ratio of 4:1. The top of the duckbill air outlet pipe 16 is fixedly installed with a guide plate 3 for guiding the airflow direction using the Coanda effect via a flange.

[0037] The guide plate 3 has a variable curvature arc structure with a curvature radius of 250mm in the initial section and gradually changes to 600mm in the middle and rear sections. The central angle is 135°, which is suitable for the arc-shaped top wall of the mine tunnel. The outlet width of the duckbill air outlet pipe 16 is the same as the width of the guide plate 3, and the outlet thickness is 8mm. It can compress the airflow output by the blower body 1 into a flat high-speed airflow.

[0038] Furthermore, such as Figure 3 As shown, the guide plate 3 has multiple through holes 6 through its rear section. The diameter of the through holes 6 is 4mm. They are evenly distributed in an array along the length and width of the guide plate 3 with a spacing of 50mm. The convex side of the through holes 6 is inclined at 18° to the end of the guide plate 3.

[0039] Multiple air collection chambers 8 are fixedly installed on the concave side of the middle and rear section of the guide plate 3. The air collection chamber 8 is a rectangular closed cavity made of aluminum alloy. The inner wall is coated with polytetrafluoroethylene dust-repellent coating. There is high-speed airflow inside the air collection chamber 8, which makes the air pressure on the concave side lower than that on the guide plate 3 and the side wall of the tunnel, making it easier for the main airflow ejected by the fan body 1 to adhere to the outside of the guide plate 3.

[0040] Furthermore, such as Figure 4 As shown, the gas collection chamber 8 is located below the through hole 6. An air inlet pipe 10 with a diameter of 8mm is fixedly installed on one side of the gas collection chamber 8, and an air vent pipe 9 with a diameter of 2mm is fixedly installed on the other side. The air vent pipe 9 is parallel to the tangent at the end of the guide plate 3.

[0041] Furthermore, such as Figure 2 As shown, an air supply pipe 14 is fixedly installed through the outside of the air outlet pipe of the fan body 1. The air supply pipe 14 is made of PU hose with a diameter of 50mm. A horn-shaped flow guide hood 15 is fixedly installed at the bottom of the air supply pipe 14. The large opening diameter of the flow guide hood 15 is 100mm, and the small opening diameter is the same as the diameter of the air supply pipe 14. Multiple delivery pipes 11 are fixedly installed at the end of the air supply pipe 14. The delivery pipes 11 are made of PU hose with a diameter of 20mm. Each delivery pipe 11 is connected to a certain group of air inlet pipes 10 through a quick connector or a multi-port pipe.

[0042] Furthermore, such as Figure 1 As shown, a control unit 4 and a communication unit 5 are fixedly installed on the outer side of the fan body 1. The communication unit 5 is electrically connected to the mine central control system, and the control unit 4 is electrically connected to the fan body 1.

[0043] In this embodiment, the control unit 4 uses an STM32F103 microcontroller as the core controller, with a built-in adaptive control algorithm for operating conditions. The communication unit 5 uses an intrinsically safe wireless communication module for mining, which supports 4G or LoRa communication protocols.

[0044] Furthermore, such as Figure 2As shown, a one-way valve 12 and a micro regulating valve 13 are fixedly installed on the outside of the delivery pipe 11. The one-way valve 12 is further away from the gas delivery pipe 14 than the micro regulating valve 13.

[0045] In this embodiment, the one-way valve 12 is a miniature spring-type one-way valve with an opening pressure of 0.02MPa, which can effectively prevent the backflow of airflow in the gas collection chamber 8. The miniature regulating valve 13 is an electric regulating ball valve with an adjustment accuracy of 0.1%, which can accurately adjust the airflow through the control unit 4.

[0046] Furthermore, such as Figure 1 As shown, an airflow wall-attachment sensor 17 is embedded in the rear edge of the guide plate 3, and the airflow wall-attachment sensor 17 is electrically connected to the control unit 4.

[0047] In this embodiment, the laser irradiation unit 7 is a mining intrinsically safe red laser pointer with a power of 6mW and a wavelength of 650nm. In addition to calibrating the angle between the end of the guide plate 3 and the inner wall of the mine tunnel and assisting in the installation and calibration of the device, the laser irradiation unit 7 can also use the visibility of the red light beam in the dusty environment of the mine to display the wall-attached flow trajectory of the main airflow in real time. Combined with the monitoring data of the airflow wall-attached sensor 17, it can intuitively determine whether the airflow has detached, eddyed or other abnormal states. At the same time, the stable red light of this unit can serve as a visual marker for the direction of ventilation airflow, making it easy for underground workers to intuitively identify the effective ventilation area. It can also be used during daily inspections to quickly determine whether the guide plate has been displaced or deformed due to mine vibration by observing the relative position of the beam and the guide plate 3, and to promptly detect potential device malfunctions.

[0048] Furthermore, such as Figure 1 As shown, a laser irradiation unit 7 is fixedly installed on the end edge of the guide plate 3, and the laser irradiation unit 7 is electrically connected to the control unit 4.

[0049] In this embodiment, the airflow wall adhesion sensor 17 is a differential pressure sensor with a measurement range of 0-500Pa and an accuracy of ±1Pa. The airflow wall adhesion state is determined by monitoring the pressure difference between the convex and concave sides of the guide plate 3.

[0050] Specific working methods:

[0051] S1. Device installation and calibration: Fix the blower body 1 to the preset ventilation position in the mine tunnel using the mounting bracket 2, adjust the duckbill air outlet pipe 16 to face the depth of the mine, start the laser irradiation unit 7, and project the laser spot onto the wall of the mine tunnel. Adjust the installation angle of the guide plate 3 according to the position of the spot so that the angle between the end of the guide plate 3 and the inner wall of the tunnel is 8°. After calibration, stick the angle scale sticker on the wall along the laser projection path.

[0052] S2, Ventilation Start-up: The fan body 1 is started by the control unit 4, and the initial speed of the fan is set to 1450 r / min. The airflow output by the fan is compressed into a flat high-speed airflow through the duckbill air outlet pipe 16. Under the guidance of the guide plate 3, it flows into the depth of the mine tunnel. At the same time, part of the high-pressure airflow at the air outlet of the fan body 1 enters the air delivery pipe 14 through the diversion hood 15, and then is delivered to the gas collection chamber 8 through the delivery pipe 11.

[0053] S3, airflow control: The control unit 4 controls the micro regulating valve 13 to open to 50% of the initial opening. After the high-pressure airflow enters the air collection chamber 8, it forms a negative pressure. The air is drawn from the concave side of the guide plate 3 through the through hole 6 into the main airflow on the convex side, which enhances the airflow adhering to the wall. The excess airflow in the air collection chamber 8 is discharged through the vent pipe 9 and merges with the main airflow.

[0054] S4. Real-time monitoring and intelligent adjustment: The airflow wall sensor 17 monitors the pressure difference between the convex and concave sides of the guide plate 3 in real time. The monitoring data is transmitted to the control unit 4. The pressure difference threshold is set to 100-200Pa. If the monitored pressure difference is 80Pa, which is lower than the set threshold, the control unit 4 controls the micro-regulating valve 13 to increase the opening to 70% and simultaneously controls the fan body 1 to increase the speed to 1500r / min to enhance the negative pressure suction effect and the main airflow energy. If the monitored pressure difference is 220Pa, which is higher than the set threshold, the control unit 4 controls the micro-regulating valve 13 to decrease the opening to 30% to reduce energy consumption.

[0055] S5. Remote monitoring: Control unit 4 transmits data such as fan speed, micro regulating valve opening, and airflow pressure difference to the mine central control system in real time through communication unit 5. The staff can view the operating status of the device through the central control system display screen. When it is necessary to adjust the ventilation parameters, the staff can issue a command through the central control system, which is transmitted to control unit 4 through communication unit 5 to realize remote control.

[0056] In practical applications, the device in this embodiment improves airflow stability against the wall by more than 40%, reduces ventilation dead zones by 60%, improves the efficiency of harmful gas discharge by 35%, and has a high degree of intelligence, which can effectively reduce manual operation and maintenance costs.

[0057] In the description of this invention, it should be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 limiting the scope of protection of this invention.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smart ventilation device for mining shafts, comprising a fan body (1) providing power, characterized in that: The air outlet of the blower body (1) is connected to a duckbill-shaped air outlet pipe (16) for compressing the airflow into a flat jet; the outlet side of the duckbill-shaped air outlet pipe (16) is provided with a guide plate (3) for guiding the flat jet to flow against the mine wall; the device also includes a negative pressure enhancement system, which includes: a flow guide hood (15), which is disposed inside the air outlet of the blower body (1) for collecting part of the high-pressure airflow; an air delivery pipe (14), one end of which is connected to the flow guide hood (15); and multiple The gas collection chamber (8) is fixedly installed on the concave side of the guide plate (3) and connected to the flow hood (15) through the gas supply pipe (14); the middle and rear section of the guide plate (3) is provided with a plurality of through holes (6) corresponding to the gas collection chamber (8). By introducing high-pressure airflow into the gas collection chamber (8), negative pressure is generated at the through holes (6), which draws the air between the convex side of the guide plate (3) and the tunnel wall to the concave side, so as to actively enhance the adhesion effect of the flat jet on the guide plate (3).

2. The intelligent ventilation device for mining shafts according to claim 1, characterized in that: The fan body (1) is fixedly mounted with a mounting bracket (2) on the outside. The mounting bracket (2) is connected to the inner wall of the tunnel through an angle-adjustable fixed bracket.

3. The intelligent ventilation device for mining shafts according to claim 1, characterized in that: The gas collection chamber (8) is located below the through hole (6). An air inlet pipe (10) is fixedly installed on one side of the gas collection chamber (8), and an air vent pipe (9) is fixedly installed on the other side. The air vent pipe (9) is parallel to the tangent at the end of the guide plate (3).

4. The intelligent ventilation device for mining shafts according to claim 1, characterized in that: The gas delivery pipe (14) is fixedly installed through the outside of the air outlet pipe of the blower body (1). Multiple delivery pipes (11) are fixedly installed at the end of the gas delivery pipe (14), and each delivery pipe (11) is connected to a certain group of air inlet pipes (10).

5. A smart ventilation device for mining shafts according to claim 4, characterized in that: The outside of the delivery pipe (11) is connected to a one-way valve (12) and a micro regulating valve (13). The one-way valve (12) is further away from the gas delivery pipe (14) than the micro regulating valve (13).

6. The intelligent ventilation device for mining shafts according to claim 1, characterized in that: The fan body (1) is fixedly installed with a control unit (4) and a communication unit (5) on the outside of the casing. The communication unit (5) is electrically connected to the mine control system, and the control unit (4) is electrically connected to the fan body (1).

7. A smart ventilation device for mining shafts according to claim 6, characterized in that: An airflow wall-attachment sensor (17) is embedded in the rear edge of the guide plate (3), and the airflow wall-attachment sensor (17) is electrically connected to the control unit (4).

8. A smart ventilation device for mining shafts according to claim 6, characterized in that: A laser irradiation unit (7) is fixedly installed on the end edge of the guide plate (3), and the laser irradiation unit (7) is electrically connected to the control unit (4).

9. The intelligent ventilation device for mining shafts according to any one of claims 1-8, wherein the method of use is as follows: S1. Installation and calibration of the device: Fix the blower body (1) in the preset position of the mine tunnel by using the mounting bracket (2), ensure that the duckbill air outlet pipe (16) faces the ventilation direction, start the laser irradiation unit (7), calibrate the angle between the end of the guide plate (3) and the inner wall of the mine tunnel according to the laser projection spot, and adjust the installation angle of the guide plate (3) to meet the installation requirements. S2, Ventilation Start-up: The blower body (1) is started by the control unit (4). The airflow output by the blower body (1) is compressed into a flat high-speed airflow through the duckbill air outlet pipe (16). Under the guidance of the guide plate (3), it flows into the depth of the mine tunnel. At the same time, part of the high-pressure airflow at the outlet of the blower body (1) enters the air delivery pipe (14) through the diversion hood (15) and is then delivered to the gas collection chamber (8) through the delivery pipe (11). S3, airflow regulation: The control unit (4) controls the micro regulating valve (13) to open to the initial opening degree. After the high-pressure airflow enters the gas collection chamber (8), a negative pressure is formed. The air pressure of the guide plate (3) and the tunnel side wall is drawn to the concave side through the through hole (6), which strengthens the airflow wall-adhering effect. The airflow in the gas collection chamber (8) is discharged through the vent pipe (9) and merges with the main airflow. S4. Real-time monitoring and intelligent adjustment: The airflow wall-attachment sensor (17) monitors the pressure difference between the convex and concave sides of the guide plate (3) in real time and transmits the monitoring data to the control unit (4). The control unit (4) analyzes the monitoring data through the built-in algorithm. If the pressure difference is lower than the set threshold, it indicates that the airflow has a tendency to break away. The control unit (4) increases the opening of the micro-adjustment valve (13) and can appropriately increase the speed of the fan body (1) to enhance the negative pressure suction effect and the main airflow energy. If the pressure difference is higher than the set threshold, it indicates that the airflow adheres to the wall stably. The control unit (4) reduces the opening of the micro-adjustment valve (13) to reduce energy consumption. S5. Remote monitoring: The control unit (4) transmits the fan operating parameters and airflow wall monitoring data to the mine central control system in real time through the communication unit (5). The staff can remotely view the device operating status through the central control system and issue control commands through the central control system when necessary to achieve remote control.

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