Dust reducing device for mining machinery

Abstract

The application belongs to the technical field of dust reduction, and discloses a dust reduction device for mine machinery, which comprises a collecting box, a processing box installed on the top of the collecting box, and a dust reduction assembly arranged in the processing box. The first vertical plate and the second vertical plate guide dust particles to move up and down in the processing box. Since the second vertical plate and the first vertical plate are made of glass and have water droplets on the surface, the dust particles contact the water droplets when colliding with the surface of the second vertical plate and the first vertical plate, and the dust particles in the gas are adsorbed by the water droplets. With the continuous spraying of the connecting pipe, the water droplets on the surface of the first vertical plate and the second vertical plate gradually increase, the dust particles fall along the surface of the first vertical plate and the second vertical plate, and are gathered in the included angle between the movable plate and the first vertical plate. In this way, the dust reduction is achieved, and the muddy phenomenon of the mine is avoided.

Description

Technical Field

[0001] This invention belongs to the field of dust suppression technology, specifically a dust suppression device for mining machinery. Background Technology

[0002] Dust is generated in various stages and by various machines during the mining process. This dust mainly originates from the mining, crushing, screening, and transportation of ore. Currently, most dust suppression methods in mines involve spraying water mist to contact dust particles, causing them to gradually condense into larger water droplets or adhere to the surface of the water droplets, forming particles whose weight exceeds the carrying capacity of air, and eventually depositing them. However, while this method can achieve the purpose of dust suppression, long-term spraying of water mist will condense into water, leading to muddy conditions on the mine surface and affecting the normal operation of transportation equipment. Therefore, a dust suppression device for mining machinery is proposed. Summary of the Invention

[0003] To address the problems mentioned in the background section, this invention provides a dust suppression device for mining machinery, which solves the problems of existing devices.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a dust suppression device for mining machinery, comprising a collection box, and further comprising,

[0005] A processing box, which is installed on top of the collection box;

[0006] A dust suppression assembly is disposed inside the processing chamber;

[0007] A water spray assembly, which is fixedly mounted on the top of the treatment tank;

[0008] A suction assembly is installed at one end of the collection box and the processing box, and an air inlet pipe is fixedly installed at the other end of the processing box;

[0009] A transmission assembly, which is mounted on the processing box;

[0010] The dust suppression assembly includes a second vertical plate fixed at equal intervals to the top of the inner wall of the processing box, a connecting plate slidably installed on the side of the collection box, a movable plate fixed to the top of the connecting plate, through slots equidistantly opened on the top of the movable plate, a first vertical plate fixed at equal intervals on the top of the movable plate, and a rectangular through slot opened at the upper end of the first vertical plate.

[0011] The bottom of the processing box is fixedly equipped with limit plates at equal intervals. The first vertical plate is movable between two adjacent limit plates. The first vertical plate and the second vertical plate are staggered. The first vertical plate and the second vertical plate are made of glass.

[0012] The transmission assembly includes a first fixed shaft fixed to the side of the processing box, a cylinder movably sleeved on the outside of the first fixed shaft, a second fixed shaft fixed to the side of the connecting plate, the output end of the cylinder movably sleeved on the outside of the second fixed shaft, a sleeve fixed to the outside of the second fixed shaft, a connecting rod sleeved inside the sleeve, the connecting rod moving outside the collection box via a limiting frame, and an L-shaped groove for the second fixed shaft to slide on the side of the collection box.

[0013] Preferably, the collection box, the processing box and the dust suppression component are inclined downwards at 20 degrees, and the air inlet pipe is horn-shaped.

[0014] Preferably, the suction assembly includes a mesh plate fixed inside one end of the collection box, an absorbent sponge is provided between the mesh plate and the collection box, and the fan is in a non-contact state with the mesh plate.

[0015] Preferably, the water spray assembly includes a water inlet pipe fixed to the top of the treatment box, a connecting pipe connected to the bottom of the water inlet pipe, atomizing nozzles equidistantly arranged on the outside of the connecting pipe, the connecting pipe being disposed between the second vertical plate and the first vertical plate, and a fan fixed to one end of the treatment box.

[0016] Preferably, the lateral end of the L-shaped groove is horizontal with the movable plate, and the limiting frame is fixedly connected to the collection box.

[0017] Preferably, a rectangular drain trough is provided at the bottom of the first vertical plate, and a scraper is hinged to the upper end of the side of the first vertical plate.

[0018] Preferably, the scraper is connected to the first vertical plate by a spiral spring, and the scraper is always in contact with the side of the second vertical plate under the action of the spiral spring.

[0019] Preferably, in the initial state, the first vertical plate abuts against the side of the limiting plate, and the limiting plate blocks the rectangular sewage trough.

[0020] Preferably, one end of the connecting rod is movably sleeved inside the sleeve, and the other end of the connecting rod is fixedly fitted with a rectangular mesh frame, which is engaged with the top of the collection box.

[0021] Preferably, the rectangular mesh frame has the same inclination angle as the absorbent sponge, and the rectangular mesh frame has the same width as the cylinder.

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

[0023] This invention guides dust particles through a first and second vertical plate, causing them to move in a wave-like motion within the processing chamber. During this movement, the particles sequentially impact the first and second vertical plates. However, since the first and second vertical plates are made of glass and have water droplets adhering to their surfaces, the dust particles come into contact with the water droplets upon impact. The water droplets then absorb the dust particles from the gas. As the connecting pipe continuously sprays water mist, the water droplets on the surfaces of the first and second vertical plates gradually increase in size, carrying the dust particles as they fall along the surfaces of the first and second vertical plates and accumulate within the angle between the movable plate and the first vertical plate. This process is repeated to achieve dust reduction, avoiding the muddy conditions that can occur in mines caused by direct water mist spraying.

[0024] This invention uses a cylinder to push a second fixed shaft and a connecting plate to move along the transverse end of an L-shaped groove. The rectangular drain trough is in a connected state. During the movement of the movable plate and the first vertical plate, the gap between the through groove and the two adjacent limiting plates coincides. The mud and water in the angle between the first vertical plate and the movable plate fall into the collection box through the rectangular drain trough and the through groove for collection. Meanwhile, the cylinder continues to push the second fixed shaft to move. The second fixed shaft moves to the corner of the L-shaped groove and moves down along the longitudinal end of the L-shaped groove. The scraper moves down to scrape off the mud and dirt attached to the surface of the second vertical plate. The atomizing nozzle continuously sprays water mist that can only contact the side of the first vertical plate, improving the efficiency of water droplets condensing on the side of the first vertical plate, thereby achieving the cleaning of the side of the first vertical plate.

[0025] This invention uses a sleeve to drive a connecting rod and a rectangular mesh frame to move downwards. The rectangular mesh frame applies downward pressure to the absorbent sponge. During the pressure application, the water adsorbed in the absorbent sponge is gradually discharged. Since the treatment box and the collection box are tilted at a 20-degree angle, the squeezed water flows along the bottom of the collection box. At the same time, the drain pipe is opened, and the sludge at the bottom of the collection box is washed during the flow, preventing dust particles from settling at the bottom of the collection box. As the water adsorbed in the absorbent sponge is squeezed out, it can carry the mesh plate and the dust particles that have not been treated in the absorbent sponge, thereby improving the effect of gas dust suppression. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the processing box of the present invention;

[0028] Figure 3 This is a schematic diagram of the cooperation structure between the suction component and the transmission component of the present invention;

[0029] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0030] Figure 5 For the present invention Figure 3Enlarged structural diagram at point B;

[0031] Figure 6 This is a schematic diagram of the cooperation structure between the dust suppression component and the transmission component of the present invention;

[0032] Figure 7 This is a schematic diagram of the planar mating structure of the dust suppression component of the present invention;

[0033] Figure 8 This is a schematic diagram of the external structure of the suction component of the present invention;

[0034] Figure 9 This is an exploded structural diagram of the transmission component of the present invention.

[0035] In the diagram: 1. Collection box; 2. Processing box; 3. Water spray assembly; 31. Water inlet pipe; 32. Connecting pipe; 33. Atomizing nozzle; 4. Suction assembly; 41. Absorbent sponge; 42. Mesh plate; 43. Fan; 5. Transmission assembly; 51. Cylinder; 52. First fixed shaft; 53. Second fixed shaft; 54. Sleeve; 55. Connecting rod; 56. Limiting frame; 57. Rectangular mesh frame; 58. L-shaped groove; 6. Sewage pipe; 7. Dust suppression assembly; 71. Connecting plate; 72. Movable plate; 73. First vertical plate; 74. Rectangular through groove; 75. Scraper; 76. Second vertical plate; 77. Limiting plate; 78. Through groove; 79. Rectangular sewage trough; 8. Air inlet pipe. Detailed Implementation

[0036] 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.

[0037] like Figures 1 to 9 As shown, the present invention provides a dust suppression device for mining machinery, including a collection box 1, and further comprising,

[0038] Processing box 2 is installed on top of collection box 1;

[0039] Dust suppression component 7 is installed inside the processing box 2;

[0040] Water spray assembly 3 is fixedly mounted on the top of the treatment tank 2;

[0041] Suction assembly 4 is installed at one end of collection box 1 and processing box 2, and air inlet pipe 8 is fixedly installed at the other end of processing box 2.

[0042] Transmission assembly 5 is mounted on processing box 2;

[0043] The dust suppression component 7 includes a second vertical plate 76 that is fixed at equal intervals to the top of the inner wall of the processing box 2, a connecting plate 71 that is slidably installed on the side of the collection box 1, a movable plate 72 that is fixed to the top of the connecting plate 71, through slots 78 that are equidistantly opened on the top of the movable plate 72, a first vertical plate 73 that is fixed at equal intervals on the top of the movable plate 72, and a rectangular through slot 74 that is opened at the upper end of the first vertical plate 73.

[0044] The bottom of the processing box 2 is fixedly equipped with limit plates 77 at equal intervals. The first vertical plate 73 is movable between two adjacent limit plates 77. The first vertical plate 73 and the second vertical plate 76 are staggered. The first vertical plate 73 and the second vertical plate 76 are made of glass.

[0045] The water spray assembly 3 includes a water inlet pipe 31 fixed to the top of the treatment box 2, a connecting pipe 32 connected to the bottom of the water inlet pipe 31, and atomizing nozzles 33 equidistantly arranged on the outside of the connecting pipe 32. The connecting pipe 32 is located between the second vertical plate 76 and the first vertical plate 73. A fan 43 is fixed to one end of the treatment box 2.

[0046] The collection box 1, the treatment box 2 and the dust suppression component 7 are set at a downward angle of 20 degrees, and the air inlet pipe 8 is horn-shaped.

[0047] Air is drawn from inside the treatment chamber 2 by the fan 43, while outside air enters the chamber 2 through the air inlet pipe 8. Simultaneously, one end of the water inlet pipe 31 connects to the water pump, injecting water into the connecting pipe 32 and spraying it out through the atomizing nozzle 33, filling the treatment chamber 2 with water mist. This water mist adheres to the second vertical plate 76 and the first vertical plate 73. Meanwhile, outside dust enters the treatment chamber 2 and moves towards one end of the chamber 2 through the rectangular channel 74. Guided by the second vertical plate 76, it impacts the surface of the next first vertical plate 73 from the bottom. This process repeats, with the first vertical plate 73 and the second vertical plate 76 guiding the dust particles, causing them to move in waves within the treatment chamber 2, impacting the surface of the first vertical plate 73 in sequence. The second vertical plate 76 and the first vertical plate 73 are made of glass and have water droplets on their surfaces. When dust particles hit the surfaces of the second vertical plate 76 and the first vertical plate 73, they come into contact with the water droplets and are absorbed by the water droplets. As the connecting pipe 32 continues to spray water mist, the water droplets on the surfaces of the first vertical plate 73 and the second vertical plate 76 gradually increase in size, carrying dust particles down along the surfaces of the first vertical plate 73 and the second vertical plate 76, located between the two adjacent limiting plates 77, and gathered in the angle between the movable plate 72 and the first vertical plate 73. This process is repeated to achieve the purpose of dust suppression and avoid the muddy phenomenon in the mine caused by direct spraying of water mist.

[0048] like Figure 2 and Figure 3As shown, the suction assembly 4 includes a mesh plate 42 fixed inside one end of the collection box 1, and an absorbent sponge 41 is provided between the mesh plate 42 and the collection box 1. The fan 43 is in a non-contact state with the mesh plate 42.

[0049] The fan 43 draws gas from the outside through the treatment box 2. The gas containing dust particles enters the treatment box 2 for dust suppression. The water spray component 3 continuously injects water mist into the treatment box 2. The water mist is drawn towards one end of the treatment box 2 by the suction of the fan 43 and blown into the water-absorbing sponge 41 by the fan 43. The water-absorbing sponge 41 absorbs the water mist and further processes the dust particles that cannot be processed. The treated gas is discharged through the top of the water-absorbing sponge 41, thus achieving the purpose of gas dust suppression.

[0050] like Figures 2-9 As shown, the transmission assembly 5 includes a first fixed shaft 52 fixed to the side of the processing box 2, a cylinder 51 movably sleeved on the outside of the first fixed shaft 52, a second fixed shaft 53 fixed to the side of the connecting plate 71, the output end of the cylinder 51 movably sleeved on the outside of the second fixed shaft 53, a sleeve 54 fixed to the outside of the second fixed shaft 53, a connecting rod 55 sleeved inside the sleeve 54, the connecting rod 55 movably outside the collection box 1 through the limiting frame 56, and an L-shaped groove 58 for the second fixed shaft 53 to slide on the side of the collection box 1.

[0051] The lateral end of the L-shaped groove 58 is kept horizontal with the movable plate 72, and the limiting frame 56 is fixedly connected to the collection box 1.

[0052] A rectangular drain trough 79 is provided at the bottom of the first vertical plate 73, and a scraper 75 is hinged to the upper end of the side of the first vertical plate 73.

[0053] The scraper 75 is connected to the first vertical plate 73 by a spiral spring, and the scraper 75 is always in contact with the side of the second vertical plate 76 under the action of the spiral spring.

[0054] In the initial state, the first vertical plate 73 abuts against the side of the limiting plate 77, and the limiting plate 77 blocks the rectangular sewage trough 79.

[0055] The blower 43 is turned off and the cylinder 51 pushes the second fixed shaft 53 and the connecting plate 71 to move along the transverse end of the L-shaped groove 58. The connecting plate 71 drives the movable plate 72 to move towards one end of the treatment box 2. During the movement, the first vertical plate 73 disengages from the side contact of the limiting plate 77, and the rectangular sewage trough 79 is in a connected state. The scraper 75 is pushed to rotate at the hinge point with the first vertical plate 73 and compress the spiral spring, shortening the distance between the first vertical plate 73 and the second vertical plate 76. At the same time, during the movement of the movable plate 72 and the first vertical plate 73, the gap between the through groove 78 and the two adjacent limiting plates 77 coincides. At this time, the mud and water in the angle between the first vertical plate 73 and the movable plate 72 fall into the collection box 1 through the rectangular sewage trough 79 and the through groove 78 for collection.

[0056] Meanwhile, cylinder 51 continuously pushes the second fixed shaft 53 to move. The second fixed shaft 53 moves to the corner of the L-shaped groove 58 and moves down along the longitudinal end of the L-shaped groove 58, thereby driving the connecting plate 71, movable plate 72, first vertical plate 73 and scraper 75 to move down. The scraper 75 scrapes off the mud and dirt attached to the surface of the second vertical plate 76. At the same time, the atomizing nozzle 33 continuously sprays water mist that can only contact the side of the first vertical plate 73, improving the efficiency of water droplets condensing on the side of the first vertical plate 73, thereby achieving the cleaning of the side of the first vertical plate 73.

[0057] like Figure 3 , Figure 6 and Figure 8 As shown, one end of the connecting rod 55 is movably sleeved inside the sleeve 54, and the other end of the connecting rod 55 is fixedly fitted with a rectangular mesh frame 57, which is engaged with the top of the collection box 1.

[0058] The rectangular mesh frame 57 has the same tilt angle as the water-absorbing sponge 41, and the rectangular mesh frame 57 has the same width as the cylinder 51.

[0059] As the cylinder 51 pushes the second fixed shaft 53 to move along the transverse end of the L-shaped groove 58, the limiting frame 56 limits the connecting rod 55, so that the sleeve 54 is gradually fitted onto the outside of the connecting rod 55. When the second fixed shaft 53 moves to the longitudinal end, the sleeve 54 drives the connecting rod 55 and the rectangular mesh frame 57 to move downward. The rectangular mesh frame 57 applies downward pressure to the water-absorbing sponge 41. During the pressure application, the water absorbed in the water-absorbing sponge 41 is gradually discharged. Since the treatment box 2 and the collection box 1 are tilted at 20 degrees and the blower 43 and the mesh plate 42 are in a non-contact state, the squeezed water flows along the bottom of the collection box 1 and will not come into contact with the blower 43. At the same time, the drain pipe 6 is opened, and the sludge at the bottom of the collection box 1 is washed during the flow to prevent dust particles from settling at the bottom of the collection box 1.

[0060] As the water absorbed by the water-absorbing sponge 41 is squeezed out, it can carry the mesh plate 42 and the dust particles that were not handled by the water-absorbing sponge 41, thereby improving the dust suppression effect of the gas and extending the service life of the water-absorbing sponge 41. Regularly replacing the water-absorbing sponge 41 will make its dust suppression effect even better.

[0061] Working principle and usage process of this invention:

[0062] Air is drawn from inside the treatment chamber 2 by the fan 43, while outside air enters the chamber 2 through the air inlet pipe 8. Simultaneously, one end of the water inlet pipe 31 connects to the water pump, injecting water into the connecting pipe 32 and spraying it out through the atomizing nozzle 33, filling the treatment chamber 2 with water mist. This water mist adheres to the second vertical plate 76 and the first vertical plate 73. Meanwhile, outside dust enters the treatment chamber 2 and moves towards one end of the chamber 2 through the rectangular channel 74. Guided by the second vertical plate 76, it impacts the surface of the next first vertical plate 73 from the bottom. This process repeats, with the first vertical plate 73 and the second vertical plate 76 guiding the dust particles to form a layer inside the treatment chamber 2. As the wave moves downwards, it successively impacts the second vertical plate 76 and the first vertical plate 73 during the movement. However, since the second vertical plate 76 and the first vertical plate 73 are made of glass and have water droplets attached to their surfaces, dust particles come into contact with the water droplets when they impact the surfaces of the second vertical plate 76 and the first vertical plate 73. The water droplets adsorb the dust particles in the gas. As the connecting pipe 32 continues to spray water mist, the water droplets on the surfaces of the first vertical plate 73 and the second vertical plate 76 gradually increase in size, carrying dust particles as they fall along the surfaces of the first vertical plate 73 and the second vertical plate 76, located between the two adjacent limiting plates 77, and accumulating in the angle between the movable plate 72 and the first vertical plate 73.

[0063] The fan 43 draws gas from the outside through the treatment box 2. The gas containing dust particles enters the treatment box 2 for dust suppression. The water spray assembly 3 continuously injects water mist into the treatment box 2. The water mist is drawn towards one end of the treatment box 2 by the suction of the fan 43 and blown into the water-absorbing sponge 41 by the fan 43. The water-absorbing sponge 41 absorbs the water mist and further processes the dust particles that cannot be treated. The treated gas is discharged through the top of the water-absorbing sponge 41.

[0064] The fan 43 shuts off and, via cylinder 51, pushes the second fixed shaft 53 and connecting plate 71 to move along the transverse end of the L-shaped groove 58. Meanwhile, the connecting plate 71 drives the movable plate 72 to move towards one end of the treatment box 2. During this movement, the first vertical plate 73 disengages from the side contact of the limiting plate 77, and the rectangular sewage trough 79 is in a connected state. The scraper 75 is pushed to rotate at the hinge point with the first vertical plate 73, compressing the spiral spring and shortening the distance between the first vertical plate 73 and the second vertical plate 76. Simultaneously, during the movement of the movable plate 72 and the first vertical plate 73, the gap between the through groove 78 and the two adjacent limiting plates 77 coincides. At this time, the first vertical... The mud and water within the angle between plate 73 and movable plate 72 fall into the collection box 1 through rectangular drain trough 79 and through trough 78 for collection. Meanwhile, cylinder 51 continuously pushes the second fixed shaft 53 to move. The second fixed shaft 53 moves to the corner of L-shaped groove 58 and moves down along the longitudinal end of L-shaped groove 58, thereby driving the connecting plate 71, movable plate 72, first vertical plate 73 and scraper 75 to move down. The scraper 75 scrapes off the mud and dirt attached to the surface of the second vertical plate 76. At the same time, the atomizing nozzle 33 continuously sprays water mist that can only contact the side of the first vertical plate 73, improving the efficiency of water droplets condensing on the side of the first vertical plate 73.

[0065] As the cylinder 51 pushes the second fixed shaft 53 to move along the transverse end of the L-shaped groove 58, the limiting frame 56 limits the connecting rod 55, causing the sleeve 54 to gradually fit over the outside of the connecting rod 55. When the second fixed shaft 53 moves to the longitudinal end, the sleeve 54 drives the connecting rod 55 and the rectangular mesh frame 57 to move downward. The rectangular mesh frame 57 applies downward pressure to the absorbent sponge 41. During the pressure application, the water absorbed by the absorbent sponge 41 is gradually discharged. Since the treatment box 2 and the collection box 1 are tilted at 20 degrees and the blower 43 and the mesh plate 42 are in a non-contact state, the squeezed water flows along the bottom of the collection box 1 and will not come into contact with the blower 43. At the same time, the drain pipe 6 is opened, and the sludge at the bottom of the collection box 1 is washed during the flow to prevent dust particles from settling at the bottom of the collection box 1.

[0066] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust falling device for a mine machine, comprising a collection box (1), characterized in that: It also includes, Processing box (2), which is installed on top of the collection box (1); Dust suppression assembly (7), the dust suppression assembly (7) is disposed inside the processing box (2); A water spray assembly (3) is fixedly mounted on the top of the treatment tank (2); A suction assembly (4) is installed at one end of the collection box (1) and the processing box (2), and an air inlet pipe (8) is fixed at the other end of the processing box (2). Transmission assembly (5), which is mounted on the processing box (2); The dust suppression component (7) includes a second vertical plate (76) fixed at equal intervals to the top of the inner wall of the processing box (2), a connecting plate (71) slidably installed on the side of the collection box (1), a movable plate (72) fixed on the top of the connecting plate (71), through slots (78) equidistantly opened on the top of the movable plate (72), a first vertical plate (73) fixed at equal intervals on the top of the movable plate (72), and a rectangular through slot (74) opened at the upper end of the first vertical plate (73). The bottom of the processing box (2) is fixedly fitted with limiting plates (77) at equal intervals. The first vertical plate (73) moves between two adjacent limiting plates (77). The first vertical plate (73) and the second vertical plate (76) are staggered. The first vertical plate (73) and the second vertical plate (76) are made of glass. The transmission assembly (5) includes a first fixed shaft (52) fixed to the side of the processing box (2), a cylinder (51) is movably sleeved on the outside of the first fixed shaft (52), a second fixed shaft (53) is fixed to the side of the connecting plate (71), the output end of the cylinder (51) is movably sleeved on the outside of the second fixed shaft (53), a sleeve (54) is fixed to the outside of the second fixed shaft (53), a connecting rod (55) is sleeved inside the sleeve (54), the connecting rod (55) moves to the outside of the collection box (1) through a limiting frame (56), and an L-shaped groove (58) is opened on the side of the collection box (1) for the second fixed shaft (53) to slide. The lateral end of the L-shaped groove (58) is kept horizontal with the movable plate (72), and the limiting frame (56) is fixedly connected to the collection box (1); A rectangular drain trough (79) is provided at the bottom of the first vertical plate (73), and a scraper (75) is hinged to the upper end of the side of the first vertical plate (73). In the initial state, the first vertical plate (73) abuts against the side of the limiting plate (77), and the rectangular sewage trough (79) is blocked by the limiting plate (77).

2. The dust reducing device for a mine machinery according to claim 1, characterized by: The collection box (1), the processing box (2) and the dust suppression component (7) are inclined downward at 20 degrees, and the air inlet pipe (8) is horn-shaped.

3. The dust suppression device for mining machinery according to claim 1, characterized in that: The suction assembly (4) includes a mesh plate (42) fixed inside one end of the collection box (1), and an absorbent sponge (41) is provided between the mesh plate (42) and the collection box (1). A fan (43) is fixed at one end of the processing box (2), and the fan (43) is in a non-contact state with the mesh plate (42).

4. The dust suppression device for mining machinery according to claim 3, characterized in that: The water spray assembly (3) includes a water inlet pipe (31) fixed to the top of the treatment box (2), and a connecting pipe (32) is connected to the bottom of the water inlet pipe (31). Atomizing nozzles (33) are equidistantly arranged on the outside of the connecting pipe (32). The connecting pipe (32) is located between the second vertical plate (76) and the first vertical plate (73).

5. The dust suppression device for mining machinery according to claim 1, characterized in that: The scraper (75) is connected to the first vertical plate (73) by a spiral spring, and the scraper (75) is always in contact with the side of the second vertical plate (76) under the action of the spiral spring.

6. The dust suppression device for mining machinery according to claim 3, characterized in that: One end of the connecting rod (55) is movably sleeved inside the sleeve (54), and the other end of the connecting rod (55) is fixedly fitted with a rectangular mesh frame (57), which is engaged with the top of the collection box (1).

7. The dust suppression device for mining machinery according to claim 6, characterized in that: The rectangular mesh frame (57) and the absorbent sponge (41) are tilted at the same angle.

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