Metal mine roadway dust falling device and dust falling method

Abstract

A metal mine roadway dust falling device, including filter dust falling mechanism and spray dust falling mechanism, filter dust falling mechanism includes at least one rotating setting in the roadway drum, and drum and the bottom of roadway are perpendicular to each other, and drum is wound with dust falling filter screen, and the free end of dust falling filter screen is connected with filter screen drive assembly for unhooking dust falling filter screen from drum, and filter screen drive assembly can drive dust falling filter screen to move to be perpendicular to the length direction of roadway after unhooking dust falling filter screen;Spray dust falling mechanism includes at least one horizontal setting above filter dust falling mechanism Spray pipe, and the side wall of spray pipe is provided with multiple main spray heads, and spray pipe is communicated with water supply assembly for conveying clean water to spray pipe.The present application provides a kind of metal mine roadway dust falling device and dust falling method, by setting filter dust falling mechanism and spray dust falling mechanism, can independently operate or cooperate with each other, realize better dust falling effect.

Description

Technical Field

[0001] This invention relates to the field of roadway dust suppression technology, specifically a dust suppression device and method for metal mine roadways. Background Technology

[0002] Metal mine tunnels generate a large amount of dust during operations, which poses a significant threat to the environment and human health, thus requiring timely dust suppression measures. Current dust suppression equipment primarily works by collecting and filtering air. While this method offers good dust suppression, the filter media has a limited lifespan and requires frequent replacement; failure to replace it in a timely manner can drastically reduce its effectiveness. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a dust suppression device and method for metal mine roadways. By setting up a filtration dust suppression mechanism and a spray dust suppression mechanism, they can operate independently or cooperate with each other to achieve better dust suppression results.

[0004] To achieve the above objectives, the specific solution adopted by the present invention is as follows:

[0005] A dust suppression device for metal mine tunnels includes a filtration dust suppression mechanism and a spray dust suppression mechanism;

[0006] The dust-reducing filtration mechanism includes at least one rotating drum rotatably disposed in the tunnel, and the rotating drum is perpendicular to the bottom of the tunnel. A dust-reducing filter screen is wound on the rotating drum. The free end of the dust-reducing filter screen is connected to a filter screen driving component for detaching the dust-reducing filter screen from the rotating drum. After the filter screen driving component detaches the dust-reducing filter screen, it can drive the dust-reducing filter screen to move perpendicular to the length direction of the tunnel.

[0007] The dust suppression spraying mechanism includes at least one spray pipe horizontally disposed above the dust suppression filter mechanism. Multiple main nozzles are connected to the peripheral sidewall of the spray pipe, and the spray pipe is connected to a water supply assembly for conveying clean water into the spray pipe.

[0008] Preferably, the dust removal and filtration mechanism includes a mounting rod and a base fixedly connected to the side wall of the tunnel. The mounting rod is horizontally arranged and extends along the length of the tunnel. A horizontally arranged base plate is fixedly connected to the side of the mounting rod facing away from the side wall. The rotating drum is rotatably arranged between the base plate and the base, and a winding motor for driving the rotating drum is coaxially fixedly connected to the upper end of the rotating drum.

[0009] Preferably, two limiting discs are fixedly provided on the rotating drum, the two limiting discs are respectively close to the mounting rod and the base, and a receiving space for accommodating the dust filter is formed between the two limiting discs.

[0010] Preferably, the dust-reducing filtration mechanism includes a first guide rail fixedly connected to the mounting rod, and the first guide rail extends along the width direction of the aisle. Two first guide grooves with opposite opening directions are slidably formed on the first guide rail, and the two first guide grooves are connected by a through groove. A connecting slider is slidably disposed in one of the first guide grooves, and the connecting slider is detachably connected to the dust-reducing filter screen. The filter screen driving assembly includes a driving slider slidably disposed in the other first guide groove. The driving slider is fixedly connected to the connecting slider through a transmission rod, and the transmission rod passes through the through groove.

[0011] Preferably, the filter drive assembly includes a lead screw for driving the drive slider to move, one end of the lead screw is connected to a drive motor for driving the lead screw to rotate, and the other end of the lead screw is rotatably connected to a bearing seat, and the bearing seat is fixedly connected to the first guide rail.

[0012] Preferably, the first guide rail is fixedly connected to two vertically distributed and parallel extension rods. The two extension rods are connected by two parallel fixed rods. The fixed rod passes downward through one of the lower extension rods and is fitted with a rotating sleeve. A guiding gap is formed between the two rotating sleeves for the dust filter to pass through.

[0013] Preferably, the dust suppression spraying mechanism includes at least two spray pipes, and all the spray pipes are evenly distributed along the length of the roadway, and each spray pipe is connected to a lifting drive assembly for driving the spray pipe to move up and down.

[0014] Preferably, the lifting drive assembly includes a second guide rail fixedly mounted on the side wall of the tunnel. The second guide rail has at least one second guide groove perpendicular to the bottom of the tunnel. At least one guide slider is slidably mounted in the second guide groove. All the guide sliders are fixedly connected to a mounting base. The mounting base is connected to a lifting drive for driving the mounting base to move. The mounting base is also rotatably connected to a rotating shaft. The spray pipe is coaxially fixedly connected to the rotating shaft.

[0015] Preferably, the mounting base is fixedly connected to a water guide tank, and the water guide tank is connected to the water supply component. The water guide tank is also connected to a plurality of auxiliary nozzles, which are inclined downward and face the side of the tunnel.

[0016] A method for dust suppression in metal mine roadways, based on the aforementioned dust suppression device for metal mine roadways, includes the following steps:

[0017] Real-time monitoring of dust levels in the tunnels;

[0018] When the amount of dust reaches a preset first threshold, the dust-suppressing filter is moved to a state perpendicular to the length direction of the roadway by the filter drive component, and the dust-suppressing filter is used to filter and suppress dust.

[0019] When the amount of dust reaches a preset second threshold, the water supply component is used to deliver clean water to the spray pipe, so that the clean water is sprayed out from the main nozzle to reduce dust.

[0020] In use, this invention first collects air quality data, particularly dust levels, from an air quality collector installed inside the tunnel. Then, when the dust level reaches a preset first threshold, a filter drive assembly detaches the dust-suppressing filter from the rotating drum and drives it perpendicular to the length of the tunnel. The filter then intercepts and filters the dust, achieving dust suppression. When the dust level reaches a preset second threshold, relying solely on the filtration mechanism becomes insufficient. At this point, a spray dust suppression mechanism is used simultaneously. Specifically, a water supply assembly inputs clean water into the spray pipes, which is then sprayed through the main nozzles to form a water mist or curtain. As the water droplets fall, they contact and adhere to the dust particles in the air, achieving dust suppression. The simultaneous operation of the filtration and spray dust suppression mechanisms ensures effective dust suppression. Multiple main nozzles can be directed in different directions to expand the coverage area of ​​the clean water and further enhance the dust suppression effect. Furthermore, after a period of use, dust filters accumulate a lot of dust on their surface. The water droplets sprayed by the dust suppression spray mechanism can wash away the dust adhering to the filter surface, thereby restoring the filter's filtration capacity. This invention, by setting up a filtration dust suppression mechanism and a spray dust suppression mechanism, can operate independently or in combination to achieve better dust suppression results. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional view of the overall structure of the dust suppression device of the present invention;

[0023] Figure 2 This is a front view of the overall structure of the dust suppression device of the present invention;

[0024] Figure 3 This is a schematic diagram of the filter drive assembly;

[0025] Figure 4 yes Figure 3 Enlarged view of section A;

[0026] Figure 5 This is a schematic diagram of the driving method for the slider;

[0027] Figure 6 This is a structural diagram of the lifting drive assembly.

[0028] Reference numerals: 1-Side panel, 2-Partition plate, 3-Canopy, 4-Installation space, 5-Spray pipe, 6-Dust filter, 7-Level pad, 8-Sewage drainage channel, 9-First guide rail, 10-First guide groove, 11-Connecting slider, 12-Suspension rod, 13-Mounting rod, 14-Rewinding motor, 15-Base plate, 16-Rotating drum, 17-Extension rod, 18-Fixing rod, 19-Rotating sleeve, 20-Guiding gap, 21-Limiting plate, 22-Base, 23-Through groove, 24-Drive motor, 25-Lead screw, 26-Transmission rod, 27-Drive slider, 28-Shaft seat, 29-Second guide rail, 30-Lifting driver, 31-Mounting seat, 32-Second guide groove, 33-Guide slider, 34-Fixing block, 35-Rotating shaft, 36-Water guide box, 37-Secondary nozzle. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0030] like Figures 1 to 6 As shown, a dust suppression device for metal mine tunnels includes a filtration dust suppression mechanism and a spray dust suppression mechanism.

[0031] The dust suppression filtration mechanism includes at least one rotating drum 16 rotatably disposed in the tunnel, and the rotating drum 16 is perpendicular to the bottom of the tunnel. A dust suppression filter 6 is wound on the rotating drum 16. The free end of the dust suppression filter 6 is connected to a filter drive assembly for detaching the dust suppression filter 6 from the rotating drum 16. After the filter drive assembly detaches the dust suppression filter 6, it can drive the dust suppression filter 6 to move perpendicular to the length direction of the tunnel.

[0032] The dust suppression spraying mechanism includes at least one spray pipe 5 horizontally disposed above the dust suppression filter mechanism. Multiple main nozzles are connected to the peripheral sidewall of the spray pipe 5, and the spray pipe 5 is connected to a water supply component for conveying clean water into the spray pipe 5.

[0033] In use, this invention first collects air quality data, particularly dust levels, from an air quality collector installed inside the tunnel. Then, when the dust level reaches a preset first threshold, a filter drive assembly detaches the dust-suppressing filter 6 from the rotating drum 16 and drives it perpendicular to the length of the tunnel. The filter then intercepts and filters the dust, achieving dust suppression. When the dust level reaches a preset second threshold, relying solely on the filtration mechanism is insufficient. At this point, a spray dust suppression mechanism is used simultaneously. Specifically, a water supply assembly inputs clean water into the spray pipe 5, which is then sprayed through the main nozzles to form a water mist or curtain. As the water droplets fall, they contact and adhere to the dust in the air, achieving dust suppression. The simultaneous operation of the filtration and spray dust suppression mechanisms ensures effective dust suppression. Multiple main nozzles can be directed in different directions to expand the coverage area of ​​the clean water and further enhance the dust suppression effect. On the other hand, the dust-suppressing filter 6 can quickly filter out large dust particles, while small dust particles can be suppressed by the spray dust suppression mechanism. The two dust suppression mechanisms work together to effectively suppress dust particles of different sizes, thus improving the dust suppression effect. In addition, after a period of use, a lot of dust will adhere to the surface of the dust-suppressing filter 6. The water droplets sprayed by the spray dust suppression mechanism can wash away the dust adhering to the surface of the dust-suppressing filter 6, thereby restoring the filtration capacity of the dust-suppressing filter 6.

[0034] This invention, by setting up a filtration dust suppression mechanism and a spray dust suppression mechanism, can operate independently or cooperate with each other to achieve a better dust suppression effect.

[0035] The specific structure of the dust suppression filtration mechanism is as follows: The dust suppression filtration mechanism includes a mounting rod 13 and a base 22 fixedly connected to the side wall 1 of the tunnel. The mounting rod 13 is horizontally arranged and extends along the length of the tunnel. A horizontally arranged base plate 15 is fixedly connected to the side of the mounting rod 13 facing away from the side wall 1. A rotating drum 16 is rotatably arranged between the base plate 15 and the base 22, and a winding motor 14 for driving the rotation of the rotating drum 16 is coaxially fixedly connected to the upper end of the rotating drum 16. When the amount of dust in the tunnel reaches a preset first threshold, the dust suppression filter 6 is unloaded from the rotating drum 16 using the filter drive assembly. When the amount of dust drops below the first threshold, the winding motor 14 drives the rotating drum 16 to rotate, thereby rewinding the dust suppression filter 6 back onto the rotating drum 16 for subsequent reuse. The base plate 15 and the base 22 jointly support the rotating drum 16, improving the stability of the rotating drum 16.

[0036] Because the dust filter 6 needs to be able to be wound onto the rotating drum 16, the dust filter 6 needs to be deformable. In order to prevent the dust filter 6 from being damaged due to skewing during the winding process, two limiting discs 21 are fixedly installed on the rotating drum 16. The two limiting discs 21 are close to the mounting rod 13 and the base 22 respectively, and a receiving space for accommodating the dust filter 6 is formed between the two limiting discs 21.

[0037] To ensure that the filter drive assembly can smoothly drive the dust-suppressing filter 6 to a position perpendicular to the length direction of the tunnel, the dust-suppressing filter mechanism includes a first guide rail 9 fixedly connected to the mounting rod 13, and the first guide rail 9 extends along the width direction of the tunnel. Two first guide grooves 10 with opposite opening directions are slidably opened on the first guide rail 9, and the two first guide grooves 10 are connected through a through groove 23. A connecting slider 11 is slidably disposed in one of the first guide grooves 10, and the connecting slider 11 is detachably connected to the dust-suppressing filter 6. The filter drive assembly includes a drive slider 27 slidably disposed in the other first guide groove 10. The drive slider 27 is fixedly connected to the connecting slider 11 through a transmission rod 26, and the transmission rod 26 passes through the through groove 23. When the dust level in the tunnel reaches a preset first threshold, the drive slider 27 drives the connecting slider 11 to slide via the transmission rod 26. This, in turn, causes the connecting slider 11 to move the dust-suppressing filter 6. Simultaneously, as the dust-suppressing filter 6 is detached from the rotating drum 16, a portion of it moves parallel to the width direction of the tunnel. At this point, this portion of the filter 6 is perpendicular to the length direction of the tunnel, effectively intercepting and filtering dust from the air. By setting the first guide rail 9 and the first guide groove 10, it is ensured that the dust-suppressing filter 6 is moved to a state perpendicular to the length direction of the tunnel, thus guaranteeing the dust suppression effect.

[0038] The specific driving method of the drive slider 27 is as follows: the filter drive assembly includes a lead screw 25 for driving the drive slider 27 to move. One end of the lead screw 25 is connected to a drive motor 24 for driving the lead screw 25 to rotate, and the other end of the lead screw 25 is rotatably connected to a bearing 28, which is fixedly connected to the first guide rail 9. When it is necessary to drive the dust filter 6, the drive motor 24 drives the lead screw 25 to rotate. During the rotation of the lead screw 25, the drive slider 27 moves. By controlling the rotation direction of the drive motor 24, the rotation direction of the lead screw 25 can be controlled, thereby changing the movement direction of the drive slider 27. The control process is simple.

[0039] To further ensure that the dust filter 6 can be smoothly wound onto or detached from the rotating drum 16, the first guide rail 9 is fixedly connected to two vertically distributed and parallel extension rods 17. The two extension rods 17 are connected by two parallel fixed rods 18. The fixed rod 18 passes downward through the lower extension rod 17 and is fitted with a rotating sleeve 19. A guide gap 20 is formed between the two rotating sleeves 19 for the dust filter 6 to pass through. During the process of detaching from and moving from the rotating drum 16, as well as during the process of being wound onto the rotating drum 16, the dust filter 6 passes through the guide gap 20. This controls the direction of movement of the dust filter 6 and prevents it from deviating and thus hindering its smooth movement. On the other hand, when the dust filter 6 contacts and rubs against the rotating sleeve 19, it can drive the rotating sleeve 19 to rotate, thereby preventing excessive friction between the rotating sleeve 19 and the dust filter 6 and causing damage to the dust filter 6.

[0040] Furthermore, to ensure that the dust filter 6 can smoothly pass through the guide gap 20 and maintain the overall stability of the dust filter 6, the dust filter includes multiple shaping rods perpendicular to the bottom of the tunnel. A distance is left between adjacent shaping rods. These shaping rods prevent excessive deformation of the dust filter 6, thus ensuring its smooth passage through the guide gap 20. On the other hand, a lifting ring can be fixedly connected to one of the shaping rods located at the edge of the dust filter 6, and a suspension rod 12 is fixedly installed on the connecting slider 11. The lifting ring and suspension rod 12 cooperate to achieve a detachable connection between the connecting slider 11 and the dust filter 6. Correspondingly, at least one pin should be provided on the suspension rod 12 to limit the position of the lifting ring, preventing the lifting ring from detaching from the suspension rod 12 and causing the dust filter 6 to separate from the connecting slider 11.

[0041] The specific structure of the dust suppression spraying mechanism is as follows: The dust suppression spraying mechanism includes at least two spray pipes 5, and all spray pipes 5 are evenly distributed along the length of the roadway. Each spray pipe 5 is connected to a lifting drive assembly for driving the spray pipe 5 to move up and down. The lifting drive assembly includes a second guide rail 29 fixedly installed on the side wall 1 of the roadway. At least one second guide groove 32 perpendicular to the bottom of the roadway is opened on the second guide rail 29. At least one guide slider 33 is slidably installed in the second guide groove 32. All guide sliders 33 are fixedly connected to a mounting base 31, and the guide sliders 33 are fixedly connected to the mounting base 31 through a fixing block 34. The mounting base 31 is connected to a lifting driver 30 for driving the mounting base 31 to move. The mounting base 31 is also rotatably connected to a rotating shaft 35, and the spray pipe 5 is coaxially fixedly connected to the rotating shaft 35. When the amount of dust in the tunnel exceeds a preset second threshold, the lifting drive assembly can be used to drive the spray pipe 5 downwards and then spray cleaning water. By adjusting the height of the spray pipe 5, the cleaning water can be used to clean different positions of the dust-suppressing filter 6, ensuring that the dust-suppressing capacity of the dust-suppressing filter 6 can be restored. The setting of the second guide rail 29 and the second guide groove 32 can limit the movement direction of the spray pipe 5, ensuring that the spray pipe 5 can operate stably.

[0042] Considering that a large amount of dust will accumulate on the sidewall 1 of the tunnel, in order to further improve the dust suppression effect, a water guide tank 36 is fixedly connected to the mounting base 31, and the water guide tank 36 is connected to the water supply component. The water guide tank 36 is also connected to multiple auxiliary nozzles 37, which are inclined downwards and face the sidewall of the tunnel. The auxiliary nozzles 37 can clean different positions on the sidewall 1 as the mounting base 31 is raised and lowered, thereby improving the dust suppression effect.

[0043] Furthermore, the water supply assembly includes a water supply pipe and at least one water supply pump. The water supply pipe can use metal mine circulating water as the source of clean water. The water supply pump delivers the clean water to the spray pipe 5 and the water guide tank 36, and then sprays the clean water from the main nozzle and the auxiliary nozzle 37.

[0044] To facilitate the installation of the lifting drive components, a partition plate 2 is fixedly installed on the upper part of the tunnel. An installation space 4 is formed between the partition plate 2 and the roof 3 of the tunnel. The lifting drive components and the water supply components are both installed in the installation space 4.

[0045] Furthermore, a raised floor 7 is provided at the bottom of the tunnel, and the raised floor 7 is located below the dust suppression spraying mechanism. A sewage drainage channel 8 is provided at the edge of the raised floor 7. After the cleaning water sprayed by the dust suppression spraying mechanism adheres to the dust and falls onto the raised floor 7, it can collect into sewage and flow into the sewage drainage channel 8, thereby facilitating the discharge of sewage and preventing sewage from remaining in the tunnel for a long time and causing pollution.

[0046] The present invention further provides a method for dust suppression in metal mine roadways, based on the aforementioned dust suppression device for metal mine roadways, the method comprising S1 to S3.

[0047] S1. Real-time collection of dust levels in the tunnel.

[0048] S2. When the amount of dust reaches the preset first threshold, the dust-suppressing filter 6 is moved to a state perpendicular to the length direction of the tunnel by the filter drive component, and the dust-suppressing filter 6 is used to filter and suppress dust.

[0049] S3. When the amount of dust reaches the preset second threshold, clean water is supplied to the spray pipe 5 using the water supply component, so that the clean water is sprayed out from the main nozzle to spray and reduce dust.

[0050] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0051] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A metal mine roadway dust falling device, characterized in that, The filter dust falling mechanism comprises at least one rotating drum (16) arranged in the tunnel, the rotating drum (16) is perpendicular to the bottom of the tunnel, a dust falling filter screen (6) is wound on the rotating drum (16), the free end of the dust falling filter screen (6) is connected with a filter screen driving assembly for releasing the dust falling filter screen (6) from the rotating drum (16), and the filter screen driving assembly can drive the dust falling filter screen (6) to move to be perpendicular to the length direction of the tunnel after the dust falling filter screen (6) is released. The spray dust falling mechanism comprises at least one spray pipe (5) arranged above the filter dust falling mechanism, a plurality of main spray heads are arranged on the side wall of the spray pipe (5) in communication, and the spray pipe (5) is communicated with a water supply assembly for supplying clean water into the spray pipe (5). The spray dust falling mechanism comprises at least two spray pipes (5), and all the spray pipes (5) are uniformly distributed along the length direction of the tunnel, and each spray pipe (5) is connected with a lifting driving assembly for driving the spray pipe (5) to move up and down. The lifting driving assembly comprises a second guide rail (29) fixedly arranged on the side slope (1) of the tunnel, at least one second guide groove (32) perpendicular to the bottom of the tunnel is formed in the second guide rail (29), at least one guide sliding block (33) is slidably arranged in the second guide groove (32), all the guide sliding blocks (33) are fixedly connected with a mounting seat (31) together, the mounting seat (31) is connected with a lifting driver (30) for driving the mounting seat (31) to move, the mounting seat (31) is further rotatably connected with a rotating shaft (35), and the spray pipe (5) is coaxially fixedly connected with the rotating shaft (35). The mounting seat (31) is fixedly connected with a water guide box (36), the water guide box (36) is communicated with the water supply assembly, and the water guide box (36) is further communicated with a plurality of auxiliary spray heads (37), the auxiliary spray heads (37) are downwardly inclined and face the side slope of the tunnel. The filter dust falling mechanism comprises a mounting rod (13) and a base (22) fixedly connected with the side slope (1) of the tunnel, the mounting rod (13) is horizontally arranged and extends along the length direction of the tunnel, a horizontal base plate (15) is fixedly connected to the side of the mounting rod (13) away from the side slope (1), the rotating drum (16) is rotatably arranged between the base plate (15) and the base (22), and the upper end of the rotating drum (16) is coaxially fixedly connected with a winding motor (14) for driving the rotating drum (16) to rotate.

2. The metal mine roadway dust falling device according to claim 1, characterized in that, Two limiting discs (21) are fixedly arranged on the rotating drum (16), the two limiting discs (21) are respectively close to the mounting rod (13) and the base (22), and a containing space for containing the dust falling filter screen (6) is formed between the two limiting discs (21).

3. A metal mine roadway dust falling device according to claim 2, characterized in that, ​ 4. The metal mine roadway dust falling device according to claim 2, characterized in that, The filter dust falling mechanism comprises a first guide rail (9) fixedly connected with the mounting rod (13), and the first guide rail (9) extends along the width direction of the roadway, two first guide grooves (10) with opposite opening directions are slidably arranged on the first guide rail (9), and the two first guide grooves (10) are communicated through a through groove (23), one of the first guide grooves (10) is slidably provided with a connecting sliding block (11), the connecting sliding block (11) is detachably connected with the dust falling filter screen (6), the filter screen driving assembly comprises a driving sliding block (27) slidably arranged in the other first guide groove (10), the driving sliding block (27) is fixedly connected with the connecting sliding block (11) through a transmission rod (26), and the transmission rod (26) penetrates through the through groove (23).

5. A metal mine roadway dust falling device according to claim 4, characterized in that, The filter screen driving assembly comprises a lead screw (25) for driving the driving sliding block (27) to move, one end of the lead screw (25) is connected with a driving motor (24) for driving the lead screw (25) to rotate, the other end of the lead screw (25) is rotatably connected with an axle seat (28), and the axle seat (28) is fixedly connected with the first guide rail (9).

6. A metal mine roadway dust falling device according to claim 5, characterized in that, The first guide rail (9) is fixedly connected with two extension rods (17) which are distributed above and below and parallel to each other, the two extension rods (17) are connected through two parallel fixing rods (18), the fixing rod (18) penetrates through the lower one of the extension rods (17) and is sleeved with a rotating sleeve (19), and the rotating sleeves (19) form a guide gap (20) for the dust falling filter screen (6) to pass through.

7. A method of reducing dust in a metal mine tunnel, characterized by, Based on the metal mine roadway dust falling device in any one of claims 1-6, the method comprises the following steps: Real-time collection of the dust amount of the roadway; When the dust amount reaches a preset first threshold value, the dust falling filter screen (6) is driven by the filter screen driving assembly to move to a state perpendicular to the length direction of the roadway, and the dust falling filter screen (6) is used for filtering dust; When the dust amount reaches a preset second threshold value, the water supply assembly is used for conveying clean water to the spray pipe (5), so that the clean water is sprayed from the main spray head for spray dust falling.

Images