Metal mine roadway dust falling device and dust falling method

Abstract

A dust falling device for a metal mine roadway comprises a filtering dust falling mechanism and a spraying dust falling mechanism. The filtering and dust-falling mechanism comprises at least one rotating cylinder rotationally arranged in the roadway, the rotating cylinder is perpendicular to the bottom of the roadway, a dust-falling filter screen is wound around the rotating cylinder, and the free end of the dust-falling filter screen is connected with a filter screen driving assembly used for removing the dust-falling filter screen from the rotating cylinder. The filter screen driving assembly can drive the dust falling filter screen to move to be perpendicular to the length direction of the roadway after removing the dust falling filter screen. The spraying dust-falling mechanism comprises at least one spraying pipe horizontally arranged above the filtering dust-falling mechanism, a plurality of main spraying heads are arranged on the peripheral side wall of the spraying pipe in a communicating mode, and the spraying pipe is communicated with a water supply assembly used for conveying clean water into the spraying pipe. According to the dust falling device and method for the metal mine roadway, the filtering dust falling mechanism and the spraying dust falling mechanism are arranged and can operate independently or cooperate with each other, and the better dust falling effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel dust reduction, in particular to a metal mine tunnel dust reduction device and a dust reduction method. Background Art

[0002] During the operation of metal mine tunnels, a large amount of dust will be generated, which is very harmful to the environment and personnel health, so dust reduction treatment is needed in time. In the existing technology, dust reduction equipment mainly completes dust reduction by collecting air and filtering it. Although this method has a good dust reduction effect, the life of the filter material is limited and the replacement frequency is high. If it is not replaced in time, the dust reduction effect will be greatly reduced. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a metal mine tunnel dust reduction device and a dust reduction method. By setting a filtering dust reduction mechanism and a spraying dust reduction mechanism, the two mechanisms can operate independently or cooperate with each other to achieve a better dust reduction effect.

[0004] In order to achieve the above object, the specific scheme adopted by the present invention is: A dust reduction device for a metal mine tunnel, comprising a filtering dust reduction mechanism and a spraying dust reduction mechanism; The filtering dust reduction mechanism comprises at least one rotating drum rotatably arranged in the lane, and the rotating drum is perpendicular to the bottom of the lane, a dust reduction filter is wound on the rotating drum, and a filter driving assembly for removing the dust reduction filter from the rotating drum is connected to the free end of the dust reduction filter, and the filter driving assembly can drive the dust reduction filter to move perpendicular to the length direction of the lane after removing the dust reduction filter; The spray dust reduction mechanism includes at least one spray pipe horizontally arranged above the filtering dust reduction mechanism, a plurality of main nozzles are connected and arranged on the peripheral side wall of the spray pipe, and the spray pipe is connected to a water supply component for conveying clean water to the spray pipe.

[0005] Preferably, the filtering and dust reduction mechanism includes a mounting rod and a base fixedly connected to the side wall of the alley, the mounting rod is horizontally arranged and extends along the length direction of the alley, the side of the mounting rod facing away from the side wall is fixedly connected to a horizontally arranged base plate, the rotating drum is rotatably arranged between the base plate and the base, and the upper end of the rotating drum is coaxially fixedly connected to a winding motor for driving the rotating drum to rotate.

[0006] Preferably, two limiting plates are fixedly provided on the rotating drum, the two limiting plates are respectively close to the mounting rod and the base, and an accommodating space for accommodating the dust suppression filter is formed between the two limiting plates.

[0007] Preferably, the filtering and dust reduction mechanism includes a first guide rail fixedly connected to the mounting rod, and the first guide rail extends along the width direction of the alley, and two first guide grooves with opposite opening directions are slidably opened on the first guide rail, and the two first guide grooves are connected by a through groove, and a connecting slider is slidably arranged in one of the first guide grooves, and the connecting slider is detachably connected to the dust reduction filter, and the filter driving assembly includes a driving slider slidably arranged in another first guide groove, and the driving slider is fixedly connected to the connecting slider through a transmission rod, and the transmission rod passes through the through groove.

[0008] Preferably, the filter drive assembly includes a screw for driving the drive slider to move, one end of the screw is connected to a drive motor for driving the screw to rotate, the other end of the screw is rotatably connected to a shaft seat, and the shaft seat is fixedly connected to the first guide rail.

[0009] Preferably, the first guide rail is fixedly connected to two extension rods which are distributed up and down and parallel to each other. The two extension rods are connected by two fixed rods which are parallel to each other. The fixed rod passes downward through one of the extension rods located below and is then sleeved with a rotating sleeve. A guide gap is formed between the two rotating sleeves for the dust reduction filter to pass through.

[0010] Preferably, the spray dust reduction mechanism includes at least two spray pipes, and all the spray pipes are evenly distributed along the length direction of the tunnel, and each of the spray pipes is connected to a lifting drive assembly for driving the spray pipe to move up and down.

[0011] Preferably, the lifting drive assembly includes a second guide rail fixedly arranged on the side wall of the alley, the second guide rail is provided with at least one second guide groove perpendicular to the bottom of the alley, at least one guide slider is slidably arranged in the second guide groove, all the guide sliders are commonly and fixedly connected to a mounting seat, and the mounting seat is connected to a lifting drive for driving the mounting seat to move, the mounting seat is also rotatably connected to a rotating shaft, and the spray pipe is coaxially and fixedly connected to the rotating shaft.

[0012] Preferably, the mounting seat is fixedly connected to a water guide box, and the water guide box is connected to the water supply assembly. The water guide box is also connected to a plurality of auxiliary nozzles, and the auxiliary nozzles are arranged to be tilted downward and toward the side of the tunnel.

[0013] A method for reducing dust in a metal mine tunnel, based on the above-mentioned device for reducing dust in a metal mine tunnel, comprises the following steps: Collect the dust amount in the lane in real time; When the dust amount reaches a preset first threshold, the filter driving assembly is used to drive the dust reduction filter to move to a state perpendicular to the length direction of the lane, and the dust reduction filter is used to filter and reduce dust; When the dust amount reaches a preset second threshold, the water supply assembly is used to transport clean water to the spray pipe, so that the clean water is sprayed out from the main nozzle to spray and reduce dust.

[0014] When the present invention is used, the air quality in the lane is first collected by an air quality collector arranged inside the lane, especially the amount of dust; then, when the amount of dust reaches a preset first threshold, the dust filter is untied from the drum by using a filter driving assembly, and the dust filter is driven to a state perpendicular to the length direction of the lane; then, the dust is intercepted and filtered by the dust filter to achieve the effect of dust reduction; when the amount of dust reaches a preset second threshold, the effect of dust reduction by filtering the dust reduction mechanism alone is not good. At this time, the dust reduction is carried out simultaneously by using a spray dust reduction mechanism. Specifically, clean water is input into the spray pipe by using a water supply assembly, and the clean water is sprayed out through the main nozzle to form a water mist or a water curtain. The water droplets contact and adhere to the dust in the air during the falling process to achieve the effect of dust reduction. At this time, the filtering dust reduction mechanism and the spray dust reduction mechanism act simultaneously to ensure the dust reduction effect. The directions of the multiple main nozzles can be different, thereby expanding the coverage area of ​​the clean water and improving the dust reduction effect. In addition, after a period of use, a lot of dust will adhere to the surface of the dust filter, and the water droplets sprayed by the spray dust reduction mechanism can also wash away the dust adhered to the surface of the dust filter, thereby restoring the filtering capacity of the dust filter. The present invention can independently operate or cooperate with each other by setting a filtering dust reduction mechanism and a spray dust reduction mechanism to achieve a better dust reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional diagram of the overall structure of the dust suppression device of the present invention; Figure 2 This is a front view of the overall structure of the dust suppression device of the present invention; Figure 3 is a schematic diagram of the structure of the filter drive assembly; Figure 4 yes Figure 3 A magnified view of part A; Figure 5It is a schematic diagram of the driving mode of the driving slider; Figure 6 It is a structural schematic diagram of the lifting drive component.

[0017] Figure markings: 1-side side, 2-interlayer board, 3-ceiling, 4-installation space, 5-spray pipe, 6-dust reduction filter, 7-raising layer, 8-sewage drainage channel, 9-first guide rail, 10-first guide groove, 11-connecting slider, 12-suspension rod, 13-mounting rod, 14-winding motor, 15-base plate, 16-rotating drum, 17-extension rod, 18-fixing rod, 19-rotating sleeve, 20-guide gap, 21-limiting plate, 22-base, 23-through groove, 24-drive motor, 25-screw, 26-transmission rod, 27-drive slider, 28-axle seat, 29-second guide rail, 30-lifting drive, 31-mounting seat, 32-second guide groove, 33-guide slider, 34-fixed block, 35-rotating shaft, 36-water guide box, 37-auxiliary nozzle. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 6 As shown, a dust reduction device for a metal mine tunnel includes a filtering dust reduction mechanism and a spraying dust reduction mechanism.

[0020] The filtering and dust reduction mechanism includes at least one rotating drum 16 rotatably arranged in the alley, and the rotating drum 16 is perpendicular to the bottom of the alley, and a dust reduction filter 6 is wound on the rotating drum 16. The free end of the dust reduction filter 6 is connected to a filter driving assembly for removing the dust reduction filter 6 from the rotating drum 16, and after the filter driving assembly removes the dust reduction filter 6, it can drive the dust reduction filter 6 to move perpendicular to the length direction of the alley.

[0021] The spray dust reduction mechanism includes at least one spray pipe 5 horizontally arranged above the filtering dust reduction mechanism, a plurality of main nozzles are connected on the peripheral side wall of the spray pipe 5, and the spray pipe 5 is connected to a water supply component for conveying clean water to the spray pipe 5.

[0022] When the present invention is used, the air quality in the lane, especially the amount of dust, is first collected by an air quality collector arranged inside the lane; then, when the amount of dust reaches a preset first threshold, the dust filter 6 is untied from the drum 16 by using a filter driving assembly, and the dust filter 6 is driven to a state perpendicular to the length direction of the lane; then, the dust is intercepted and filtered by the dust filter 6 to achieve the effect of dust reduction; when the amount of dust reaches a preset second threshold, the effect of dust reduction by relying solely on the filtering dust reduction mechanism is not good. At this time, the dust is simultaneously reduced by using a spray dust reduction mechanism. Specifically, clean water is input into the spray pipe 5 by using a water supply assembly, and the clean water is then sprayed through the main nozzle to form a water mist or a water curtain. The water droplets contact and adhere to the dust in the air during the falling process to achieve the effect of dust reduction. At this time, the filtering dust reduction mechanism and the spray dust reduction mechanism act simultaneously to ensure the dust reduction effect. The directions of the multiple main nozzles can be different, thereby expanding the coverage area of ​​the clean water and improving the dust reduction effect. On the other hand, the dust filter 6 can be used to quickly filter out large particles of dust, while small particles of dust can be treated by the spray dust reduction mechanism. The two dust reduction mechanisms cooperate with each other to fully treat dust of different particle sizes, thereby improving the dust reduction effect. In addition, after the dust filter 6 has been used for a period of time, a lot of dust will adhere to the surface, and the water droplets sprayed by the spray dust reduction mechanism can also wash away the dust adhered to the surface of the dust filter 6, thereby restoring the filtering capacity of the dust filter 6.

[0023] The present invention provides a filtering dust reduction mechanism and a spraying dust reduction mechanism, which can operate independently or cooperate with each other to achieve a better dust reduction effect.

[0024] The specific structure of the filtering dust reduction mechanism is as follows: the filtering dust reduction mechanism includes a mounting rod 13 and a base 22 fixedly connected to the side 1 of the lane, the mounting rod 13 is horizontally arranged and extends along the length direction of the lane, and a horizontally arranged base plate 15 is fixedly connected to the side of the mounting rod 13 facing away from the side 1, and a rotating drum 16 is rotatably arranged between the base plate 15 and the base 22, and a winding motor 14 for driving the rotating drum 16 to rotate is coaxially fixedly connected to the upper end of the rotating drum 16. When the amount of dust in the lane reaches a preset first threshold, the filter screen drive assembly is used to untie the dust reduction filter screen 6 from the rotating drum 16. When the amount of dust drops below the first threshold, the winding motor 14 is used to drive the rotating drum 16 to rotate, so that the dust reduction filter screen 6 is rewound onto the rotating drum 16 for subsequent reuse. The base plate 15 and the base 22 jointly support the rotating drum 16 to improve the stability of the rotating drum 16.

[0025] Because the dust filter 6 needs to be able to be wound onto the drum 16, the dust filter 6 needs to be able to be deformed. In order to prevent the dust filter 6 from being deflected and damaged during the winding process, two limit plates 21 are fixedly provided on the drum 16. The two limit plates 21 are respectively close to the mounting rod 13 and the base 22, and a storage space for accommodating the dust filter 6 is formed between the two limit plates 21.

[0026] In order to ensure that the filter driving assembly can smoothly drive the dust filter 6 to move to a state perpendicular to the length direction of the alley, the filtering dust reduction 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 alley, and the first guide rail 9 is slidably opened with two first guide grooves 10 with opposite opening directions, and the two first guide grooves 10 are connected through a through groove 23, a connecting slider 11 is slidably arranged in one of the first guide grooves 10, and the connecting slider 11 is detachably connected to the dust filter 6, and the filter driving assembly includes a driving slider 27 slidably arranged in the other first guide groove 10, and the driving 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 volume in the lane reaches a preset first threshold, the driving slider 27 drives the connecting slider 11 to slide through the transmission rod 26, and then the connecting slider 11 drives the dust filter 6 to move, and while the dust filter 6 is untied from the drum 16, a part of the dust filter 6 is driven to move parallel to the width direction of the lane. At this time, this part of the dust filter 6 is perpendicular to the length direction of the lane, so that dust in the air can be effectively intercepted and filtered. By setting the first guide rail 9 and the first guide groove 10, it can be ensured that the dust filter 6 is moved to a state perpendicular to the length direction of the lane, thereby ensuring the dust reduction effect.

[0027] The specific driving method of the driving slider 27 is as follows: the filter driving assembly includes a lead screw 25 for driving the driving slider 27 to move, one end of the lead screw 25 is connected to a driving motor 24 for driving the lead screw 25 to rotate, and the other end of the lead screw 25 is rotatably connected to a shaft seat 28, and the shaft seat 28 is fixedly connected to the first guide rail 9. When it is necessary to drive the dust filter 6, the lead screw 25 is driven to rotate by the driving motor 24, and the driving slider 27 is driven to move during the rotation of the lead screw 25. The rotation direction of the lead screw 25 can be controlled by controlling the rotation direction of the driving motor 24, thereby changing the moving direction of the driving slider 27, and the control process is simple.

[0028] In order to further ensure that the dust filter 6 can be smoothly wound onto or unwound from the drum 16, the first guide rail 9 is fixedly connected to two extension rods 17 that are distributed up and down and parallel to each other. The two extension rods 17 are connected by two parallel fixed rods 18. The fixed rod 18 passes downward through an extension rod 17 located below and is then sleeved 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. The dust filter 6 passes through the guide gap 20 during the process of being unwound from the drum 16 and moving, and during the process of being rolled onto the drum 16, so that the moving direction of the dust filter 6 can be controlled to prevent the dust filter 6 from being offset and unable to move smoothly. 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 the rotating sleeve 19 from excessive friction with the dust filter 6 and causing damage to the dust filter 6.

[0029] Furthermore, in order to ensure that the dust filter 6 can smoothly pass through the guide gap 20 and ensure that the overall shape of the dust filter 6 is stable, the dust filter includes a plurality of shaping rods arranged perpendicular to the bottom of the tunnel, and a distance is left between two adjacent shaping rods. The shaping rods can be used to prevent the dust filter 6 from being excessively deformed, thereby ensuring that the dust filter 6 can smoothly pass through the guide gap 20. On the other hand, a lifting ring can be fixedly connected to a shaping rod located at the edge of the dust filter 6, and a hanging rod 12 is fixedly provided on the connecting slider 11. The detachable connection between the connecting slider 11 and the dust filter 6 is achieved through the cooperation between the lifting ring and the hanging rod 12. Accordingly, at least one pin for limiting the position of the lifting ring should be provided on the hanging rod 12 to prevent the lifting ring from falling off the hanging rod 12, causing the dust filter 6 to separate from the connecting slider 11.

[0030] The specific structure of the spray dust reduction mechanism is as follows: the spray dust reduction mechanism includes at least two spray pipes 5, and all the spray pipes 5 are evenly distributed along the length direction of the lane, and 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 arranged on the side wall 1 of the lane, and the second guide rail 29 is provided with at least one second guide groove 32 perpendicular to the bottom of the lane, and at least one guide slider 33 is slidably arranged in the second guide groove 32, and all the guide sliders 33 are fixedly connected to the mounting seat 31, and the guide slider 33 is fixedly connected to the mounting seat 31 through a fixing block 34, and the mounting seat 31 is connected to a lifting driver 30 for driving the mounting seat 31 to move, and the mounting seat 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 lane is greater than the preset second threshold, the lifting drive assembly can be used to drive the spray pipe 5 to move downward, and then clean water can be sprayed. By adjusting the height of the spray pipe 5, the clean water can be used to clean different positions of the dust filter 6 to ensure that the dust removal capacity of the dust filter 6 can be restored. The second guide rail 29 and the second guide groove 32 can limit the moving direction of the spray pipe 5 to ensure that the spray pipe 5 can operate stably.

[0031] Considering that a lot of dust will also accumulate on the side wall 1 of the lane, in order to further improve the dust reduction effect, the mounting seat 31 is fixedly connected with a water guide box 36, and the water guide box 36 is connected to the water supply assembly, and the water guide box 36 is also connected to a plurality of auxiliary nozzles 37, and the auxiliary nozzles 37 are arranged downwardly and facing the side wall of the lane. The auxiliary nozzles 37 can clean different positions of the side wall 1 as the mounting seat 31 rises and falls, thereby achieving the purpose of improving the dust reduction effect.

[0032] Furthermore, the water supply component 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, and transport the clean water to the spray pipe 5 and the water guide box 36 through the water supply pump, and then spray the clean water from the main nozzle and the auxiliary nozzle 37.

[0033] In order to facilitate the installation of the lifting drive assembly, an interlayer plate 2 is fixedly provided on the upper part of the tunnel, and an installation space 4 is formed between the interlayer plate 2 and the ceiling 3 of the tunnel. The lifting drive assembly and the water supply assembly are both arranged in the installation space 4.

[0034] Furthermore, a raising layer 7 is provided at the bottom of the tunnel, and the raising layer 7 is correspondingly arranged below the spray dust reduction mechanism, and a sewage drainage channel 8 is provided at the edge of the raising layer 7. After the clean water sprayed by the spray dust reduction mechanism adheres to the dust and falls on the raising layer 7, it can be gathered into sewage and flow into the sewage drainage channel 8, thereby facilitating the discharge of sewage and avoiding pollution caused by the long-term presence of sewage in the tunnel.

[0035] The present invention further provides a method for reducing dust in a metal mine tunnel. Based on the above-mentioned device for reducing dust in a metal mine tunnel, the method includes S1 to S3.

[0036] S1. Collect the dust amount in the tunnel in real time.

[0037] S2. When the dust amount reaches a preset first threshold, the filter driving assembly is used to drive the dust reduction filter 6 to move to a state perpendicular to the length direction of the lane, and the dust reduction filter 6 is used to filter and reduce dust.

[0038] S3. When the amount of dust reaches a preset second threshold, clean water is delivered to the spray pipe 5 by using the water supply assembly, so that the clean water is sprayed out from the main nozzle to spray and reduce dust.

[0039] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0040] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dust suppression device for a metal mine tunnel, characterized in that: Including filtering dust reduction mechanism and spraying dust reduction mechanism; The filtering dust reduction mechanism comprises at least one rotating drum (16) rotatably arranged in the tunnel, and the rotating drum (16) is perpendicular to the bottom of the tunnel, a dust reduction filter (6) is wound on the rotating drum (16), a filter drive assembly for removing the dust reduction filter (6) from the rotating drum (16) is connected to the free end of the dust reduction filter (6), and the filter drive assembly can drive the dust reduction filter (6) to move to a position perpendicular to the length direction of the tunnel after removing the dust reduction filter (6); The spray dust reduction mechanism comprises at least one spray pipe (5) horizontally arranged above the filtering dust reduction mechanism, a plurality of main spray heads are connected and arranged on the peripheral side wall of the spray pipe (5), and the spray pipe (5) is connected to a water supply component for conveying clean water to the spray pipe (5).

2. A dust suppression device for a metal mine tunnel as claimed in claim 1, characterized in that: The filtering dust reduction mechanism comprises a mounting rod (13) and a base (22) fixedly connected to a side wall (1) of the tunnel; the mounting rod (13) is arranged horizontally and extends along the length direction of the tunnel; a horizontally arranged base plate (15) is fixedly connected to a side of the mounting rod (13) facing away from the side wall (1); the rotating drum (16) is rotatably arranged between the base plate (15) and the base (22); and a winding motor (14) for driving the rotating drum (16) to rotate is coaxially fixedly connected to the upper end of the rotating drum (16).

3. A dust suppression device for a metal mine tunnel as claimed in claim 2, characterized in that: Two limit plates (21) are fixedly arranged on the rotating drum (16), the two limit plates (21) are respectively close to the mounting rod (13) and the base (22), and an accommodation space for accommodating the dust reduction filter (6) is formed between the two limit plates (21).

4. A dust suppression device for a metal mine tunnel as claimed in claim 2, characterized in that: The filtering dust reduction mechanism comprises 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 lane; the first guide rail (9) is slidably provided with two first guide grooves (10) with opening directions opposite to each other, and the two first guide grooves (10) are connected via a through groove (23); a connecting slider (11) is slidably provided in one of the first guide grooves (10), and the connecting slider (11) is detachably connected to the dust reduction filter (6); the filter driving assembly comprises a driving slider (27) slidably provided in the other first guide groove (10), and the driving slider (27) is fixedly connected to the connecting slider (11) via a transmission rod (26), and the transmission rod (26) passes through the through groove (23).

5. A dust suppression device for metal mine tunnels as claimed in claim 4, characterized in that: The filter screen drive assembly comprises 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, the other end of the lead screw (25) is rotatably connected to a shaft seat (28), and the shaft seat (28) is fixedly connected to the first guide rail (9).

6. A dust suppression device for a metal mine tunnel as claimed in claim 5, characterized in that: The first guide rail (9) is fixedly connected to two extending rods (17) which are distributed vertically and parallel to each other. The two extending rods (17) are connected via two fixing rods (18) which are parallel to each other. The fixing rod (18) passes downward through one of the extending rods (17) located below and is then sleeved with a rotating sleeve (19). A guide gap (20) is formed between the two rotating sleeves (19) for the dust suppression filter (6) to pass through.

7. A dust suppression device for metal mine tunnels as claimed in claim 1, characterized in that: The spray dust reduction mechanism comprises at least two spray pipes (5), and all the spray pipes (5) are evenly distributed along the length direction of the tunnel, and each of the spray pipes (5) is connected to a lifting drive assembly for driving the spray pipe (5) to move up and down.

8. A dust suppression device for a metal mine tunnel as claimed in claim 7, characterized in that: The lifting drive assembly comprises a second guide rail (29) fixedly arranged on a side wall (1) of the tunnel, the second guide rail (29) being provided with at least one second guide groove (32) perpendicular to the bottom of the tunnel, at least one guide slider (33) being slidably arranged in the second guide groove (32), all the guide sliders (33) being fixedly connected to a mounting seat (31), and the mounting seat (31) being connected to a lifting drive (30) for driving the mounting seat (31) to move, the mounting seat (31) being rotatably connected to a rotating shaft (35), and the spray pipe (5) being coaxially fixedly connected to the rotating shaft (35).

9. A dust suppression device for a metal mine tunnel as claimed in claim 8, characterized in that: The mounting seat (31) is fixedly connected to a water guide box (36), and the water guide box (36) is in communication with the water supply assembly. The water guide box (36) is also in communication with a plurality of auxiliary nozzles (37), and the auxiliary nozzles (37) are arranged to be tilted downward and face the side of the laneway.

10. A method for reducing dust in a metal mine tunnel, characterized in that: Based on a metal mine tunnel dust suppression device as described in any one of claims 1 to 9, the method comprises the following steps: Collect the dust amount in the lane in real time; When the dust volume reaches a preset first threshold, the filter screen drive assembly is used to drive the dust reduction filter screen (6) to move to a state perpendicular to the length direction of the laneway, and the dust reduction filter screen (6) is used to filter and reduce dust; When the amount of dust reaches a preset second threshold, the water supply assembly is used to transport clean water to the spray pipe (5), so that the clean water is sprayed out from the main nozzle to spray and reduce dust.

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