A kind of spray dust suppression device for mine

Abstract

The present invention relates to the technical field of dust suppression, and specifically discloses a mine spray dust suppression device, comprising: a dust suction cylinder and a suction fan, the dust suction cylinder comprises an outer cylinder layer and an inner cylinder layer, a trumpet-shaped diffusion structure 1 is formed at the first end of the inner cylinder layer, a plurality of mist nozzles 1 are arranged at intervals on the periphery of the diffusion structure 1, and the water mist sprayed by the plurality of mist nozzles 1 forms a trumpet-shaped spray water curtain, the suction fan is arranged at the second end of the inner cylinder layer, a dust filtering device is arranged inside the inner cylinder layer, a dust collecting device is arranged below the dust filtering device, a trumpet-shaped diffusion structure 2 is formed at the first end of the outer cylinder layer, an air duct is formed between the inner cylinder layer and the outer cylinder layer, the suction fan sucks wind into the inner cylinder layer, and discharges the wind from between the diffusion structure 1 and the diffusion structure 2 through the air duct. The mine spray dust suppression device of the present invention can form a trumpet-shaped spray water curtain to prevent further diffusion of dust, and can also form a circulating dust removal to improve the dust removal effect.

Description

Technical Field

[0001] The invention relates to the technical field of dust suppression, and in particular to a spray dust suppression device for mining. Background Art

[0002] Mining operations generate a large amount of dust, which may contain coal dust, silica dust and other harmful particles. If the dust concentration in the air exceeds the standard, it will not only affect the vision of the workers, but also seriously threaten the respiratory health of the miners, and may cause explosions under certain conditions. Therefore, in order to reduce the dust concentration in the workplace and protect workers from dust, spray dust suppression equipment is usually used. Spray dust suppression equipment can produce extremely fine water droplets. These tiny droplets have a large contact area with the dust particles in the air, making it easier to combine and settle, effectively reducing the dust content in the air.

[0003] The Chinese patent with the announcement number CN214944403U discloses an automatic spray dust reduction device for mining, including a coal mine dust suction cylinder, a mist spray is fixedly installed on the front side of the coal mine dust suction cylinder, a suction fan is fixedly installed on the rear side of the coal mine dust suction cylinder, a filter plate is fixedly installed inside the coal mine dust suction cylinder, and a rotating shaft is rotatably connected at the center of the circle on the rear side of the filter plate. The technical solution turns on the suction fan to suck air into the coal mine dust suction cylinder, filters the dust in the air through the filter plate, and the mist spray reduces the dust on the filtered air, thereby reducing the content of dust impurities in the air.

[0004] Since a large amount of dust generated during underground mining operations will continuously spread from the work point to the surrounding area, it is impossible to quickly control the dust diffusion by only using the suction fan in the above technical solution for suction; and although the mist spray can reduce dust in the filtered air, a large amount of dust will still remain on the ground after the water dries, which is easy to float into the air again, thereby endangering the health of miners.

[0005] Therefore, the art needs a mining spray dust suppression device to solve the above problems. Summary of the invention

[0006] The present invention provides a spray dust suppression device for mining, aiming to solve the technical problems that the spray dust suppression device in the related art cannot quickly control the dust diffusion, the dust suppression effect is poor in durability, and the dust is easy to float in the air again.

[0007] A mining spray dust suppression device of the present invention comprises a dust collection cylinder and a suction fan arranged in the dust collection cylinder, the dust collection cylinder comprises an outer cylinder layer and an inner cylinder layer, a trumpet-shaped diffusion structure 1 is formed at the first end of the inner cylinder layer, a plurality of mist nozzles 1 are arranged at intervals on the periphery of the diffusion structure 1, water mist sprayed from the plurality of mist nozzles 1 forms a trumpet-shaped spray water curtain, the suction fan is arranged at the second end of the inner cylinder layer, a dust filtering device is arranged inside the inner cylinder layer, a dust collecting device is arranged below the dust filtering device, a trumpet-shaped diffusion structure 2 is formed at the first end of the outer cylinder layer, an air duct is formed between the inner cylinder layer and the outer cylinder layer, the suction fan sucks wind into the inner cylinder layer, and discharges the wind from between the diffusion structure 1 and the diffusion structure 2 through the air duct.

[0008] Beneficial effects: The trumpet-shaped spray water curtain formed by multiple mist nozzles can cover the working point where dust is generated, block the dust inside the spray water curtain, and prevent the dust from further spreading in time; and when the suction fan is sucking air, the air located at the outer periphery of the spray water curtain will pass through the spray water curtain and enter the inner cylinder layer. When the air passes through the spray water curtain, it will become moist and easier to combine with dust, thereby accelerating the adsorption of dust in the air; after the air is filtered by the dust filtering device of the inner cylinder layer, it is discharged from between the diffusion structure one and the diffusion structure two. The discharged air forms another layer of water curtain around the spray water curtain, further preventing the dust from spreading, and at the same time, it can pass through the spray water curtain formed by the mist nozzle one to re-enter the working point where dust is generated to participate in dust reduction, thus forming a circulating dust removal, improving the dust removal effect, reducing the dust falling to the ground, and improving the problem of settled dust floating again.

[0009] Preferably, the dust filtering device includes baffle one, baffle two and baffle three arranged in sequence along the air inlet direction, baffle one and baffle three are connected to the inner cylinder layer, and are arranged obliquely from top to bottom toward the second end of the inner cylinder layer, and an air flow space is reserved between the bottom of baffle one and baffle three and the inner wall of the inner cylinder layer, baffle two is connected to the inner cylinder layer, and the top of baffle two extends between baffle one and baffle three, and an air flow space is reserved between the top of baffle two and the inner wall of the inner cylinder layer.

[0010] Beneficial effect: The humid air entering the inner cylinder layer moves through the air duct formed by baffles one, two and three, and the dust in the humid air will collide with and adhere to baffles one, two and three, thereby filtering the air.

[0011] Preferably, a plurality of mist nozzles 2 are arranged on the top of the inner wall of the inner cylinder layer, the plurality of mist nozzles 2 are located in front of the baffle 1 along the air inlet direction, and the spraying directions of the plurality of mist nozzles 2 are inclined toward the direction close to the second end of the inner cylinder layer.

[0012] Beneficial effect: The two pairs of mist nozzles further humidify the air entering the inner cylinder layer, which is beneficial to the precipitation of dust in the air and improves the treatment effect of dust in the air.

[0013] Preferably, the baffle plate 3 is rotatably connected to the inner cylinder layer, a semicircular push block is fixedly connected to the side of the baffle plate 3 facing the baffle plate 2, the push block is located above the rotation axis of the baffle plate 3, and a baffle block 1 is fixedly connected to the top of the inner wall of the inner cylinder layer;

[0014] The baffle plate 2 includes a vertical portion and an arc portion, the vertical portion is provided with a through groove connected to the dust collecting device, the arc portion is provided with an impeller 1 rotatably connected to the inner cylinder layer, a lever 1 is connected to the rotating shaft of the impeller 1, and when the lever 1 contacts the push block, it pushes the push block to drive the baffle plate 3 to rotate, so that the baffle plate 3 collides with the baffle plate 1.

[0015] Beneficial effect: It is beneficial for the dust attached to the baffle plate to vibrate and fall into the dust collecting device.

[0016] Preferably, the baffle plate 1 is rotatably connected to the inner cylinder layer, one end of the rotating shaft of the baffle plate 1 extends to the outside of the inner cylinder layer and is fixedly connected to a fixing rod, the outer wall of the inner cylinder layer is fixedly connected to a mounting block, and a spring 1 is connected between the fixing rod and the mounting block;

[0017] The outer periphery of the inner cylinder layer is rotatably connected to impeller 2, and impeller 2 is connected to lever 2. The top of the inner wall of the inner cylinder layer is fixedly connected to block 2. When the lever 2 contacts the fixed rod, it pushes the fixed rod to drive baffle 1 to rotate, so that baffle 1 collides with block 2.

[0018] Beneficial effect: It is beneficial for the dust attached to the baffle plate 3 to vibrate and fall into the dust collecting device.

[0019] Preferably, the dust collection device includes a collection box and a louver plate arranged on the top of the collection box, the louver plate includes a driving assembly, a mounting frame, and blades evenly spaced apart in the mounting frame, the blades are rotatably connected to the mounting frame, and the driving assembly drives the blades to rotate.

[0020] Preferably, a driving cavity is opened on one side of the installation frame, one end of the rotating shaft of the blade extends into the driving cavity and is fixedly connected with a connecting handle, a connecting rod is arranged in the driving cavity, and a mounting handle corresponding to each of the connecting handles is fixedly connected to the connecting rod, and each of the connecting handles is rotatably connected to the corresponding mounting handle;

[0021] The driving assembly drives the connecting rod to move up and down, and the mounting handle on the connecting rod drives the blade to rotate through the connecting handle.

[0022] Beneficial effect: The driving component drives the connecting rod to move up and down, and the mounting handle on the connecting rod drives the blade to rotate through the connecting handle, so that the opening at the top of the collection box can be opened or closed by the rotation of each blade. On the one hand, when the blade is opened, the dust falling on the blade can be collected in the collection box. On the other hand, when the blade is closed, a large amount of wind entering the inner cylinder layer is prevented from entering the collection box, affecting the dust removal effect.

[0023] Preferably, the driving assembly includes a driving rod and a connecting rod, the driving rod is vertically slidably connected in the through groove, and is vertically elastically connected to the baffle 2, a semicircular driving block is provided on the top of the driving rod, the connecting rod is fixedly connected to the driving rod, and the connecting rod extends into the driving cavity, the connecting rod is fixedly connected to a driving head, a sliding groove is provided on the connecting rod, and the driving head is slidably arranged in the sliding groove, the blades of the impeller 1 push the driving block and the driving rod to move downward, the driving rod drives the connecting rod to move downward through the connecting rod and the driving head, and the connecting rod drives the blade plate to open through the mounting handle and the connecting handle.

[0024] Preferably, an air supply cavity is provided on one side of the collecting box close to the second end of the inner cylinder layer, and the air supply cavity connects the inside of the inner cylinder layer with the outside of the outer cylinder layer.

[0025] Beneficial effect: By setting up the air supply cavity, the air volume discharged from between the inner cylinder layer and the outer cylinder layer is guaranteed, which helps to blow the humid air further forward, expand the range of the water curtain, and improve the dust removal effect.

[0026] Preferably, the mining spray dust suppression device further comprises a mounting seat, the dust collection cylinder is rotatably connected to the mounting seat, and a driving member for driving the dust collection cylinder to rotate is disposed on the mounting seat.

[0027] The beneficial effects of the present invention are:

[0028] (1) The present invention provides a diffusion structure and a plurality of mist nozzles on the periphery of the diffusion structure, so that the mist nozzles form a trumpet-shaped spray water curtain on the periphery of the operation point where dust is generated, thereby blocking the dust inside the spray water curtain and preventing the dust from further spreading in time;

[0029] (2) When the suction fan of the present invention sucks air, the air located at the periphery of the spray water curtain will pass through the spray water curtain and enter the inner cylinder layer. When the air passes through the spray water curtain, it will become moist and more easily combine with dust, thereby accelerating the adsorption of dust in the air;

[0030] (3) In the present invention, after the air is filtered by the dust filter device of the inner cylinder layer, it is discharged from between the diffusion structure 1 and the diffusion structure 2. The discharged air forms another layer of water curtain around the spray water curtain, which further prevents the dust from spreading. At the same time, it can pass through the spray water curtain formed by the mist nozzle 1 and re-enter the dust generating operation point to participate in dust reduction, forming a cyclic dust removal, improving the dust removal effect, reducing the dust falling to the ground, and improving the problem of settled dust floating again. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a mining spray dust suppression device of the present invention.

[0032] Figure 2 A cross-sectional view of a mine spray dust suppression device according to the present invention Figure 1 .

[0033] Figure 3 A cross-sectional view of a mine spray dust suppression device according to the present invention Figure 2 .

[0034] Figure 4 A cross-sectional view of a mine spray dust suppression device according to the present invention Figure 3 .

[0035] Figure 5 The present invention is a schematic structural diagram of a shutter plate of a spray dust suppression device for mining.

[0036] Figure 6 The present invention is a cross-sectional view of a shutter plate of a spray dust suppression device for mining.

[0037] Reference numerals:

[0038] 1. Mounting seat; 11. Mounting frame; 12. Drive motor 1; 13. Mounting plate; 14. Electric telescopic rod; 2. Suction fan; 21. Fan; 22. Drive motor 2; 3. Outer cylinder layer; 31. Diffusion structure 2; 4. Inner cylinder layer; 41. Diffusion structure 1; 42. Mist nozzle 1; 43. Water cavity; 44. Mist nozzle 2; 45. Block 1; 46. Block 2; 47. Mounting block; 48. Spring 1; 5. Water tank; 61. Baffle 1; 611. Fixing rod; 62. Baffle 2; 621. Vertical part; 622, arc-shaped part; 623, fixing plate; 63, baffle three; 631, push block; 7, impeller one; 71, lever one; 8, impeller two; 81, lever two; 9, collecting box; 90, air supply chamber; 901, pressure valve; 91, mounting frame; 911, driving chamber; 92, blade; 921, connecting handle; 93, connecting rod; 931, mounting handle; 932, slide groove; 94, driving rod; 941, driving block; 95, connecting rod; 951, driving head; 96, extension plate; 97, spring two. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0040] like Figures 1 to 6 As shown, a mining spray dust suppression device of the present invention comprises a mounting seat 1, a dust collection cylinder and a suction fan 2 arranged in the dust collection cylinder. The mounting seat 1 is rotatably connected with a mounting frame 11, and the dust collection cylinder is installed on the mounting frame 11. The mounting seat 1 is provided with a driving member for driving the mounting frame 11 to rotate. As an example, the driving member is a driving motor 12. The driving motor 12 drives the dust collection cylinder to rotate by driving the mounting frame 11 to rotate, so that the dust collection cylinder can adapt to dust removal in more directions. The mounting frame 11 is rotatably connected with a mounting plate 13, and the dust collection cylinder is installed on the mounting plate 13. An electric telescopic rod 14 is hinged between the mounting frame 11 and the mounting plate 13. The electric telescopic rod 14 drives the mounting plate 13 to drive the dust collection cylinder to rotate up and down, so that the dust collection cylinder can further adapt to dust removal in more directions without moving the mounting seat 1.

[0041] like Figures 1 to 3 As shown, the dust collection cylinder includes an outer cylinder layer 3 and an inner cylinder layer 4. A trumpet-shaped diffusion structure 41 is formed at the first end of the inner cylinder layer 4. A plurality of mist nozzles 42 are arranged at intervals on the periphery of the diffusion structure 41. A water cavity 43 is formed near the first end of the inner cylinder layer 4, and the mist nozzle 42 is connected to the water cavity 43. A water storage tank 5 is provided on the mounting seat 1, and the water storage tank 5 is connected to the water cavity 43. The water mist sprayed from the plurality of mist nozzles 42 forms a trumpet-shaped spray water curtain at the front end of the diffusion structure 41. The suction fan 2 includes a fan 21 and a driving motor 22 for driving the fan 21 to rotate. The fan 21 is installed at the second end of the inner cylinder layer 4, and the driving motor 22 is installed outside the second end of the outer cylinder layer 3. A dust filtering device is provided inside the inner cylinder layer 4, and a dust collecting device is provided below the dust filtering device.

[0042] The first end of the outer cylinder layer 3 is formed with a trumpet-shaped diffusion structure 2 31. An air duct is formed between the inner cylinder layer 4 and the outer cylinder layer 3, and the suction fan 2 sucks the wind into the inner cylinder layer 4 and discharges the wind from between the diffusion structure 1 41 and the diffusion structure 2 31 through the air duct.

[0043] The trumpet-shaped spray water curtain formed by multiple mist nozzles 42 can cover the working point where dust is generated, block the dust inside the spray water curtain, and prevent the dust from further spreading in time; and when the suction fan 2 is sucking air, the air located at the outer periphery of the spray water curtain will pass through the spray water curtain and enter the inner cylinder layer 4. When the air passes through the spray water curtain, it will become moist and easier to combine with dust, thereby accelerating the adsorption of dust in the air; after the air is filtered by the dust filtering device of the inner cylinder layer 4, it is discharged from between the diffusion structure 1 41 and the diffusion structure 2 31. Since the air becomes moist when passing through the spray water curtain, the discharged air forms another layer of water curtain around the spray water curtain, further preventing the dust from spreading, and at the same time, it can pass through the spray water curtain formed by the mist nozzle 42 to re-enter the working point where dust is generated to participate in dust reduction. Under the action of the suction fan 2, a circulating dust removal is formed to improve the dust removal effect.

[0044] The dust filtering device includes baffle plate 1 61, baffle plate 2 62 and baffle plate 3 63 arranged in sequence along the air inlet direction. Baffle plate 1 61 and baffle plate 3 63 are connected to the inner cylinder layer 4 and are arranged obliquely from the top to the bottom toward the second end of the inner cylinder layer 4. A wind-passing space is reserved between the bottom of baffle plate 1 61 and baffle plate 3 63 and the inner wall of the inner cylinder layer 4. Baffle plate 2 62 is connected to the inner cylinder layer 4, and the top of baffle plate 2 62 extends between baffle plate 1 61 and baffle plate 3 63. A wind-passing space is reserved between the top of baffle plate 2 62 and the inner wall of the inner cylinder layer 4. The humid air entering the inner cylinder layer 4 moves through the air duct formed by baffle plate 1 61, baffle plate 2 62 and baffle plate 3 63, and the dust in the humid air will collide with and adhere to baffle plate 1 61, baffle plate 2 62 and baffle plate 3 63, thereby filtering the air.

[0045] A plurality of mist nozzles 2 44 are arranged on the top of the inner wall of the inner cylinder layer 4. The plurality of mist nozzles 2 44 are located in front of the baffle 1 61 along the air inlet direction, and the spraying directions of the plurality of mist nozzles 2 44 are inclined toward the direction close to the second end of the inner cylinder layer 4. The mist nozzles 2 44 are also connected to the water cavity 43 of the inner cylinder layer 4. The mist nozzles 2 44 further humidify the air entering the inner cylinder layer 4, which is beneficial to the precipitation of dust in the air and improves the treatment effect of dust in the air.

[0046] The baffle plate 3 63 is rotatably connected to the inner cylinder layer 4. A semicircular push block 631 is fixedly connected to the side of the baffle plate 3 63 facing the baffle plate 2 62. The push block 631 is located above the rotation axis of the baffle plate 3 63. A baffle plate 1 45 is fixedly connected to the top of the inner wall of the inner cylinder layer 4. A flexible portion is provided on the top of the baffle plate 3 63, and the flexible portion contacts the inner wall of the inner cylinder layer 4. Baffle plate 2 62 includes a vertical portion 621 and an arc portion 622. The vertical portion 621 is provided with a through groove connected to the dust collecting device. The arc portion 622 is provided with an impeller 7 rotatably connected to the inner cylinder layer 4. A lever 71 is connected to the rotating shaft of the impeller 7. When the impeller 7 rotates, it drives the lever 71 to rotate. When the lever 71 contacts the push block 631, it pushes the push block 631 to drive the baffle plate 3 63 to rotate, so that the baffle plate 3 63 collides with the block 45, and the dust attached to the baffle plate 3 63 is shaken off into the dust collecting device. During the rotation of the baffle plate 3 63, the flexible structure at the top of the baffle plate 3 63 is always in contact with the inner wall of the inner cylinder layer 4.

[0047] like Figure 3 and Figure 4 As shown, the baffle plate 1 61 is rotatably connected to the inner cylinder layer 4, one end of the rotating shaft of the baffle plate 1 61 extends to the outside of the inner cylinder layer 4 and is fixedly connected to a fixing rod 611, the outer wall of the inner cylinder layer 4 is fixedly connected to a mounting block 47, and a spring 1 48 is connected between the fixing rod 611 and the mounting block 47. The outer periphery of the inner cylinder layer 4 is rotatably connected to the impeller 2 8, the impeller 2 8 is connected to the lever 2 81, and the top of the inner wall of the inner cylinder layer 4 is fixedly connected to the stopper 2 46. The impeller 2 8 rotates under the impetus of the wind between the inner cylinder layer 4 and the outer cylinder layer 3, thereby driving the lever 2 81 to rotate synchronously. When the lever 2 81 contacts the fixing rod 611, as the lever 2 81 continues to move, the lever 2 81 pushes the fixing rod 611 to drive the baffle plate 1 61 to rotate, so that the baffle plate 1 61 collides with the stopper 2 46, and the dust attached to the baffle plate 1 61 is shaken off into the dust collection device.

[0048] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, the dust collection device includes a collection box 9 and a louver plate arranged on the top of the collection box 9. The louver plate includes a driving assembly, a mounting frame 91, and blades 92 evenly spaced and arranged in the mounting frame 91. Driving chambers 911 are respectively provided on both sides of the mounting frame 91, and the blades 92 are rotatably connected to the mounting frame 91. Both ends of the rotating shaft of the blade 92 extend into the corresponding driving chambers 911 respectively, and are fixedly connected with connecting handles 921. A connecting rod 93 is provided in the driving chamber 911, and a mounting handle 931 corresponding to each connecting handle 921 is fixedly connected to the connecting rod 93, and each connecting handle 921 is rotatably connected to the corresponding mounting handle 931. The driving assembly drives the connecting rod 93 to move up and down, and the mounting handle 931 on the connecting rod 93 drives the blade 92 to rotate through the connecting handle 921, so as to realize opening or closing the opening at the top of the collection box 9 through the rotation cooperation of each blade 92.

[0049] A fixing plate 623 is fixedly connected in the through groove of the baffle plate 62, and the driving assembly includes a driving rod 94 and a connecting rod 95. The driving rod 94 vertically penetrates the fixing plate 623, and the portion of the driving rod 94 located above the fixing plate 623 is fixedly connected to an extension plate 96, and a spring 97 is connected between the extension plate 96 and the fixing plate 623. A semicircular driving block 941 is arranged on the top of the driving rod 94, and when the spring 97 is not subjected to external force, a part of the structure of the driving block 941 is located between the arc-shaped portion 622 of the baffle plate 62. The connecting rod 95 is fixedly connected to the bottom of the driving rod 94, and the two ends of the connecting rod 95 extend into the corresponding driving cavity 911 respectively, and the connecting rod 95 is fixedly connected to a driving head 951. A sliding groove 932 is provided on the connecting rod 93, and the driving head 951 is slidably arranged in the sliding groove 932. The impeller 7 rotates under the action of wind force. After the blades of the impeller 7 contact the driving block 941, they push the driving block 941 and the driving rod 94 downward. The driving rod 94 drives the connecting rod 93 downward through the connecting rod 95 and the driving head 951. The connecting rod 93 drives the blades 92 to rotate through the mounting handle 931 and the connecting handle 921, so that a gap is formed between adjacent blades 92, thereby opening the top opening of the collection box 9 and collecting the dust falling on the blades 92 in the collection box 9. After the blades of the impeller 7 are separated from the driving block 941, the driving block 941 moves upward and resets under the action of the spring 2 97, and the blades 92 rotate to close the top opening of the collection box 9, so as to prevent the wind entering the inner cylinder layer 4 from entering the collection box 9 in large quantities and affecting the dust removal effect.

[0050] A supplementary air chamber 90 is provided on one side of the collecting box 9 near the second end of the inner cylinder layer 4. The supplementary air chamber 90 connects the inside of the inner cylinder layer 4 with the outside of the outer cylinder layer 3, and a pressure valve 901 is provided in the supplementary air chamber 90. By providing the supplementary air chamber 90, the amount of air discharged from between the inner cylinder layer 4 and the outer cylinder layer 3 is guaranteed, which helps to blow the humid air further forward, expand the range of the water curtain, and improve the dust removal effect.

[0051] The specific working process of a mine spray dust suppression device of the present invention is as follows: the front end of the dust suction cylinder, that is, the first end of the inner cylinder layer 4 is aligned with the working point where dust is generated, and the suction fan 2, the mist nozzle 1 42 and the mist nozzle 2 44 are controlled to work. The water mist sprayed by the mist nozzle 1 42 forms a trumpet-shaped spray water curtain in front of the dust suction cylinder to cover the working point where dust is generated to prevent the dust from spreading to a larger range. The suction fan 2 inhales air, and the air around the spray water curtain passes through the spray water curtain and enters the inner cylinder layer 4. When the air passes through the spray water curtain, it becomes moist and is mixed with the inside of the spray water curtain. The dust combines with the moist air containing the dust and enters the inner cylinder layer 4. Under the spraying action of the mist nozzle 2 44, the dust in the moist air further combines with the water mist, so that part of the dust directly settles on the collection box 9, and part of it collides with the baffle 1 61, the impeller 1 7 and the baffle 2 62 and adheres to the baffle 1 61, the impeller 1 7 and the baffle 2 62. As the attached dust increases, part of the dust directly falls into the collection box 9, and part of it vibrates and falls into the collection box 9 when the baffle 1 61 collides with the block 2 46 and the baffle 3 63 collides with the block 1 45.

[0052] A mining spray dust suppression device of the present invention can form a trumpet-shaped spray water curtain at the periphery of the dust-generating operation point to prevent the dust from further spreading, and can allow the air entering the inner cylinder layer 4 to be discharged and then re-enter the dust-generating operation point to participate in dust suppression, thereby forming a cyclic dust removal and improving the dust removal effect.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A spray dust suppression device for mining, comprising a dust suction cylinder and a suction fan (2) arranged in the dust suction cylinder, It is characterized in that The dust collecting cylinder comprises an outer cylinder layer (3) and an inner cylinder layer (4); a trumpet-shaped diffusion structure (1) (41) is formed at the first end of the inner cylinder layer (4); a plurality of mist nozzles (1) (42) are arranged at intervals on the outer periphery of the diffusion structure (41); water mist sprayed by the plurality of mist nozzles (1) (42) forms a trumpet-shaped spray water curtain; the suction fan (2) is arranged at the second end of the inner cylinder layer (4); a dust filtering device is arranged inside the inner cylinder layer (4); a dust collecting device is arranged below the dust filtering device; a trumpet-shaped diffusion structure (2) (31) is formed at the first end of the outer cylinder layer (3); an air duct is formed between the inner cylinder layer (4) and the outer cylinder layer (3); the suction fan (2) sucks air into the inner cylinder layer (4) and discharges the air from between the diffusion structure (1) (41) and the diffusion structure (2) (31) through the air duct.

2. The mining spray dust suppression device according to claim 1, It is characterized in that The dust filtering device comprises a baffle plate 1 (61), a baffle plate 2 (62) and a baffle plate 3 (63) which are arranged in sequence along the air inlet direction; the baffle plate 1 (61) and the baffle plate 3 (63) are connected to the inner cylinder layer (4) and are arranged obliquely from the top to the bottom toward the second end of the inner cylinder layer (4); an airflow space is reserved between the bottom of the baffle plate 1 (61) and the baffle plate 3 (63) and the inner wall of the inner cylinder layer (4); the baffle plate 2 (62) is connected to the inner cylinder layer (4), and the top of the baffle plate 2 (62) extends between the baffle plate 1 (61) and the baffle plate 3 (63); and an airflow space is reserved between the top of the baffle plate 2 (62) and the inner wall of the inner cylinder layer (4).

3. The mining spray dust suppression device according to claim 2, It is characterized in that A plurality of mist nozzles 2 (44) are arranged on the top of the inner wall of the inner cylinder layer (4), the plurality of mist nozzles 2 (44) are located in front of the baffle 1 (61) along the air inlet direction, and the spraying direction of the plurality of mist nozzles 2 (44) is inclined toward a direction close to the second end of the inner cylinder layer (4).

4. The mining spray dust suppression device according to claim 3, It is characterized in that The baffle plate three (63) is rotatably connected to the inner cylinder layer (4); a semicircular push block (631) is fixedly connected to the side of the baffle plate three (63) facing the baffle plate two (62); the push block (631) is located above the rotation axis of the baffle plate three (63); and a baffle block one (45) is fixedly connected to the top of the inner wall of the inner cylinder layer (4); The baffle plate 2 (62) comprises a vertical portion (621) and an arcuate portion (622); the vertical portion (621) is provided with a through groove connected to the dust collecting device; the arcuate portion (622) is provided with an impeller 1 (7) rotatably connected to the inner cylinder layer (4); a lever 1 (71) is connected to the rotating shaft of the impeller 1 (7); when the lever 1 (71) contacts the push block (631), it pushes the push block (631) to drive the baffle plate 3 (63) to rotate, so that the baffle plate 3 (63) collides with the baffle plate 1 (45).

5. The mining spray dust suppression device according to claim 2 or 4, It is characterized in that The baffle plate 1 (61) is rotatably connected to the inner cylinder layer (4); one end of the rotation axis of the baffle plate 1 (61) extends to the outside of the inner cylinder layer (4) and is fixedly connected to a fixing rod (611); an outer wall of the inner cylinder layer (4) is fixedly connected to a mounting block (47); a spring 1 (48) is connected between the fixing rod (611) and the mounting block (47); The outer periphery of the inner cylinder layer (4) is rotatably connected to an impeller 2 (8), the impeller 2 (8) is connected to a lever 2 (81), and the inner wall top of the inner cylinder layer (4) is fixedly connected to a stopper 2 (46), and when the lever 2 (81) contacts the fixed rod (611), it pushes the fixed rod (611) to drive the baffle 1 (61) to rotate, so that the baffle 1 (61) collides with the stopper 2 (46).

6. The mining spray dust suppression device according to claim 4, It is characterized in that The dust collecting device comprises a collection box (9) and a louver plate arranged on the top of the collection box (9); the louver plate comprises a driving assembly, a mounting frame (91), and blades (92) evenly spaced and arranged in the mounting frame (91); the blades (92) are rotatably connected to the mounting frame (91); and the driving assembly drives the blades (92) to rotate.

7. The mining spray dust suppression device according to claim 6, It is characterized in that A driving cavity (911) is provided on one side of the installation frame (91); one end of the rotating shaft of the blade plate (92) extends into the driving cavity (911) and is fixedly connected to a connecting handle (921); a connecting rod (93) is provided in the driving cavity (911); a mounting handle (931) corresponding to each of the connecting handles (921) is fixedly connected to the connecting rod (93); and each of the connecting handles (921) is rotatably connected to the corresponding mounting handle (931); The driving assembly drives the connecting rod (93) to move up and down, and the mounting handle (931) on the connecting rod (93) drives the blade plate (92) to rotate via the connecting handle (921).

8. The mining spray dust suppression device according to claim 7, It is characterized in that The driving assembly comprises a driving rod (94) and a connecting rod (95); the driving rod (94) is slidably connected in the through groove in the vertical direction and is elastically connected to the second baffle plate (62) in the vertical direction; a semicircular driving block (941) is provided on the top of the driving rod (94); the connecting rod (95) is fixedly connected to the driving rod (94), and the connecting rod (95) extends into the driving cavity (911); the connecting rod (95) is fixedly connected to the driving head (951) ), a slide groove (932) is provided on the connecting rod (93), a driving head (951) is slidably arranged in the slide groove (932), the blades of the impeller 1 (7) push the driving block (941) and the driving rod (94) downwardly, the driving rod (94) drives the connecting rod (93) to move downwardly through the connecting rod (95) and the driving head (951), and the connecting rod (93) drives the blade plate (92) to open through the mounting handle (931) and the connecting handle (921).

9. The mining spray dust suppression device according to claim 6, It is characterized in that An air supply chamber (90) is provided on one side of the collecting box (9) close to the second end of the inner cylinder layer (4), and the air supply chamber (90) connects the interior of the inner cylinder layer (4) and the exterior of the outer cylinder layer (3).

10. The mining spray dust suppression device according to claim 1, It is characterized in that The mining spray dust suppression device further comprises a mounting seat (1), the dust collection cylinder is rotatably connected to the mounting seat (1), and a driving member for driving the dust collection cylinder to rotate is provided on the mounting seat (1).

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