Spraying and dust settling device for coal falling opening of fully mechanized caving face

Abstract

The invention relates to the technical field of dust falling devices, and discloses a fully mechanized caving face coal falling opening spraying dust falling device which comprises a supporting frame installed on a top coal caving mining device through a moving device. The spraying assembly comprises a transverse water mist piece and a vertical isolation piece, the transverse water mist piece is used for conducting transverse atomization and dust falling on dust generated during coal falling, and the vertical isolation piece is used for forming a water mist isolation curtain in the vertical direction to isolate the dust generated during coal falling; the collecting assembly comprises a collecting piece and a filtering piece, the collecting piece is arranged on the coal mine conveying belt at the bottom end, the collecting piece is used for collecting water and dust, and the filtering piece is used for filtering the dust; and the two cleaning pieces are installed on the transverse water mist piece and the vertical isolation piece correspondingly, and the cleaning pieces are used for cleaning the water outlet ends of the transverse water mist piece and the vertical isolation piece. Aiming at a large amount of dust generated during top coal caving mining coal falling, transverse atomization dust falling treatment and vertical water mist isolation treatment are carried out, the overall dust falling effect is guaranteed, meanwhile, water resources can be recycled and reused, and the water resources are saved.

Description

Technical Field

[0001] This invention relates to the field of dust suppression devices, and in particular to a spray dust suppression device for the coal chutes of a fully mechanized longwall mining face. Background Technology

[0002] Top-coal caving mining technology is a highly efficient coal mining method developed for thick and extra-thick coal seams (typically greater than 5 meters in thickness). Its core lies in achieving the dual operation of bottom coal recovery and top coal body crushing and venting through integrated mechanized processes. Top-coal caving mining technology involves setting up a longwall face with a mining height of 2-3 meters at the bottom of the coal seam, and using integrated mechanized mining processes to recover the bottom coal. Simultaneously, through mine pressure or manual auxiliary measures (such as blasting or water injection softening), the top coal above the working face is crushed into loose material, which is then released and recovered through the coal vent at the rear of the hydraulic support.

[0003] During top coal caving mining, a large amount of dust is generated as coal blocks fall at high speed from the high-level working face to the conveying equipment or the ground during the tail-end coal falling stage. Traditional dust suppression methods, such as fixed sprayers and dry dust collectors, have problems such as insufficient coverage, excessively large water mist particle size, inability to adjust the spray volume according to the dust concentration, resulting in water waste or insufficient dust suppression efficiency.

[0004] Therefore, there is an urgent need for a dust suppression spray device at the coal chutes of fully mechanized longwall mining faces to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a dust suppression spray device at the coal chutes of a fully mechanized longwall mining face to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a dust suppression spray device at the coal chutes of a fully mechanized longwall mining face, comprising:

[0007] The support frame is installed on the top coal caving mining device via a moving device;

[0008] The spray assembly includes a horizontal water mist component and a vertical isolation component. The horizontal water mist component is fixedly connected to the front end of the support frame and is used to horizontally atomize and suppress dust during coal falling. The vertical isolation component is fixedly connected to the bottom end of the support frame and is used to form a water mist isolation curtain along the vertical direction. The water mist isolation curtain is used to isolate dust during coal falling.

[0009] A collection assembly includes a collector and a filter. The collector is installed on the bottom of the coal mine conveyor belt and is located below the water mist isolation curtain for collecting water and dust. The filter is installed inside the collector for filtering dust.

[0010] Two cleaning components are respectively installed on the horizontal water mist component and the vertical isolation component. The cleaning components are used to clean the water outlet ends on the horizontal water mist component and the vertical isolation component.

[0011] Preferably, the horizontal water mist component includes a first spray pipe, the vertical isolation component includes a second spray pipe, a water storage tank is fixedly connected to the top coal caving mining device, the first spray pipe is connected to the water storage tank through a first conveying pipe, the second spray pipe is connected to the water storage tank through a second conveying pipe, and several spray components are installed on both the first spray pipe and the second spray pipe along the axial direction.

[0012] Preferably, the first spray pipe and the second spray pipe are provided with a plurality of through grooves along the axial direction, and the spraying component includes a sealing slide plate rotatably connected in the through grooves. The sealing slide plate is provided with a plurality of atomizing nozzles along the circumferential direction, and the atomizing particle size of the plurality of atomizing nozzles is different.

[0013] Preferably, a first toothed plate is fixedly connected to one end of the sealing slide plate, and a first rotating shaft is rotatably connected inside the pipe walls of the first spray pipe and the second spray pipe. A plurality of first gears are fixedly connected to the first rotating shaft, and the first gears mesh with the first toothed plate.

[0014] Preferably, the cleaning component includes a rotating ring rotatably connected to the first spray pipe and the second spray pipe. The rotating ring has a groove, and a cleaning roller is rotatably connected in the groove. A plurality of cleaning brushes are fixedly connected to the cleaning roller, and the cleaning brushes are used to clean the atomizing nozzle.

[0015] Preferably, the rotating ring has an elongated hole, and a second toothed plate is fixedly connected inside the elongated hole. A second rotating shaft is rotatably connected to the first spray pipe and the second spray pipe. A plurality of second gears are fixedly connected to the second rotating shaft, and the second gears mesh with the second toothed plate.

[0016] Preferably, a plurality of third toothed plates are fixedly connected to the first spray pipe and the second spray pipe, and a third gear is fixedly connected to the central shaft of the cleaning roller, the third gear meshing with the third toothed plates.

[0017] Preferably, the collecting component includes a collecting trough, which is fixedly connected to the coal mine conveyor belt. A receiving hopper is fixedly connected to the top of the collecting trough, and the bottom of the collecting trough is connected to the water storage tank through a conveying pipe.

[0018] Preferably, the filter element includes a filter plate fixedly connected in the collection tank, the filter plate having an inverted V-shaped cross-section, and a scraper provided on the filter plate for cleaning the filtered material on the filter plate.

[0019] Preferably, the scraping component includes a support frame fixedly connected to the bottom end of the filter plate, a vertical rod slidably connected inside the support frame, a spring sleeved on the vertical rod, the top and bottom ends of the spring being fixedly connected to the support frame and the bottom end of the vertical rod respectively, a cleaning frame being fixedly connected through the filter plate at the top end of the vertical rod, the cleaning frame being used to clean the filter plate, and a cam being rotatably connected inside the collection groove, the cam being in contact with the top end of the cleaning frame.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] This invention provides a dust suppression spray device at the coal chutes in a fully mechanized longwall mining face. During operation, when the top coal caving mining device is mining coal, a large amount of dust is generated as the coal falls onto the conveyor belt below. A transverse water mist generator generates water mist to suppress the dust, while a vertical isolation device generates a water mist barrier to block and suppress the dust. A collection device below collects the water curtain and dust, which is then filtered by a filter. The filtered water can be reused. This application addresses the large amount of dust generated during top coal caving mining by using transverse atomization dust suppression and vertical water mist isolation to ensure overall dust suppression effectiveness, while also enabling water resource recycling and reuse, thus conserving water resources. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the spray pipe of the present invention;

[0025] Figure 3 This is a schematic diagram of the meshing state of the third toothed plate and the third gear of the present invention;

[0026] Figure 4 This is a schematic diagram of the internal structure of the water storage tank of the present invention;

[0027] The components include: 1. Support frame; 2. Moving device; 3. Top coal caving mining device; 4. Coal mine conveyor belt; 5. First spray pipe; 6. Second spray pipe; 7. Water storage tank; 8. First conveying pipe; 9. Second conveying pipe; 10. Through groove; 11. Sealing slide plate; 12. Atomizing nozzle; 13. First toothed plate; 14. First rotating shaft; 15. First gear; 16. Rotating ring; 17. Groove; 18. Cleaning roller; 19. Cleaning brush; 20. Long hole; 21. Second toothed plate; 22. Second rotating shaft; 23. Second gear; 24. Third toothed plate; 25. Third gear; 26. Collection trough; 27. Receiving hopper; 28. Conveying pipe; 29. ​​Filter plate; 30. Support frame; 31. Vertical rod; 32. Spring; 33. Cleaning frame; 34. Cam. Detailed Implementation

[0028] 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.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Spray dust suppression is a new type of dust suppression technology. Its principle is to utilize the fact that the microparticles generated by the spray are extremely small and have a surface tension of almost zero. When sprayed into the air, they can quickly adsorb dust particles of various sizes in the air, thus forming an effective dust control. A related technology discloses a high-altitude water mist dust suppression device for construction sites. Its structure includes a dust suppression device, a control box, a heat dissipation window, a fixed frame, a support frame, an observation window, hinges, a handle, a box door, a lock, wheels, an upper cover, a rotating bracket, a fixed rod, a sprayer, and water pipes. The right end of the control box is welded to the left end of the dust suppression device. The control box is a hollow cuboid structure. The front end of the dust suppression device is connected to the rear end of the fixed frame via a slot. The outer wall of the observation window is bonded to the inner wall of the fixed frame. The rear end of the heat dissipation window is connected to the front end of the control box via a slot. The bottom of the upper cover is fixedly connected to the top of the dust suppression device with screws. This invention provides a high-altitude water mist dust suppression device for construction sites. The device includes a dust suppression unit and a lifting device, allowing the sprayer to spray and suppress high-altitude dust, greatly increasing the dust suppression range and further improving the construction environment. Furthermore, the buffer significantly disperses the load pressure on the top rod, extending its service life. The aforementioned related technologies, which simply rely on sprayers for dust suppression, also suffer from the problems mentioned in the background of this application. For top-coal caving mining technology, this method cannot improve dust suppression efficiency. To address these issues, this application provides the following solution:

[0031] Reference Figures 1-4 This invention provides a dust suppression spray device at the coal chutes of a fully mechanized longwall mining face, comprising:

[0032] The support frame 1 is installed on the top coal caving mining device 3 via the moving device 2;

[0033] The spray assembly includes a horizontal water mist component and a vertical isolation component. The horizontal water mist component is fixedly connected to the front end of the support frame 1 and is used to horizontally atomize and reduce dust during coal falling. The vertical isolation component is fixedly connected to the bottom end of the support frame 1 and is used to form a water mist isolation curtain along the vertical direction. The water mist isolation curtain is used to isolate the dust during coal falling.

[0034] The collection assembly includes a collector and a filter. The collector is set on the coal mine conveyor belt 4 at the bottom and is located below the water mist isolation curtain. It is used to collect water and dust. The filter is installed inside the collector to filter dust.

[0035] Two cleaning components are installed on the horizontal water mist component and the vertical isolation component, respectively. The cleaning components are used to clean the water outlets on the horizontal water mist component and the vertical isolation component.

[0036] In one embodiment of this application, during use, the top coal caving mining device 3 mines the coal mine. When the top coal falls to the coal conveyor belt 4 below, a large amount of dust is generated. The dust is suppressed by water mist generated by the horizontal water mist component and by water mist isolation curtain generated by the vertical isolation component. The water curtain and dust are collected by the collection component below. After collection, the water is filtered by the filter component and can be reused.

[0037] Specifically, the mobile device 2 is preferably a multi-axis moving stage, used to control the movement of the spray assembly.

[0038] As an optional implementation, the horizontal water mist component includes a first spray pipe 5, the vertical isolation component includes a second spray pipe 6, and a water storage tank 7 is fixedly connected to the top coal caving mining device 3. The first spray pipe 5 is connected to the water storage tank 7 through a first conveying pipe 8, and the second spray pipe 6 is connected to the water storage tank 7 through a second conveying pipe 9. Several spray components are installed on both the first spray pipe 5 and the second spray pipe 6 along the axial direction.

[0039] In one embodiment of this application, water mist is sprayed horizontally through the first spray pipe 5 to directly reduce dust generated during coal falling, and a vertical water curtain is generated through the second spray pipe 6 to block and reduce dust.

[0040] As an optional implementation, the first spray pipe 5 and the second spray pipe 6 are provided with a plurality of through grooves 10 along the axial direction. The spraying component includes a sealing slide plate 11 rotatably connected in the through groove 10. A plurality of atomizing nozzles 12 are arranged circumferentially on the sealing slide plate 11. The atomizing particle size of the plurality of atomizing nozzles 12 is different.

[0041] In one embodiment of this application, different atomizing nozzles 12 are selected by the rotatable sealing slide plate 11 to meet different atomization requirements.

[0042] As an optional implementation, a first toothed plate 13 is fixedly connected to one end of the sealing slide plate 11, and a first rotating shaft 14 is rotatably connected inside the pipe walls of the first spray pipe 5 and the second spray pipe 6. A plurality of first gears 15 are fixedly connected to the first rotating shaft 14, and the first gears 15 mesh with the first toothed plate 13.

[0043] In one embodiment of this application, the first rotating shaft 14 is driven by an external motor. The rotation of the first rotating shaft 14 drives the sealing slide plate 11 to move through the meshing first gear 15 and the first toothed plate 13, thereby enabling the selection of different atomizing nozzles 12, and also having the function of adjusting the atomizing spray angle.

[0044] As an optional implementation, the cleaning component includes a rotating ring 16 rotatably connected to the first spray pipe 5 and the second spray pipe 6. The rotating ring 16 has a groove 17, and a cleaning roller 18 is rotatably connected in the groove 17. Several cleaning brushes 19 are fixedly connected to the cleaning roller 18, and the cleaning brushes 19 are used to clean the atomizing nozzle 12.

[0045] In one embodiment of this application, a cleaning roller 18 is provided on the rotating ring 16. The cleaning brush 19 on the cleaning roller 18 cleans the atomizing nozzle 12 to prevent dust from clogging the atomizing nozzle 12 when not in use, thus ensuring the stability of atomization dust reduction.

[0046] As an optional implementation, the rotating ring 16 has an elongated hole 20, and a second toothed plate 21 is fixedly connected inside the elongated hole 20. A second rotating shaft 22 is rotatably connected to the first spray pipe 5 and the second spray pipe 6. A plurality of second gears 23 are fixedly connected to the second rotating shaft 22, and the second gears 23 mesh with the second toothed plate 21.

[0047] In one embodiment of this application, the second rotating shaft 22 is controlled to rotate by an external motor. When the second rotating shaft 22 rotates, it drives the rotating ring 16 to rotate through the meshing second gear 23 and the second toothed plate 21, thereby cleaning the atomizing nozzle 12 through the cleaning brush 19.

[0048] As an optional implementation, a plurality of third toothed plates 24 are fixedly connected to the first spray pipe 5 and the second spray pipe 6, and a third gear 25 is fixedly connected to the central shaft of the cleaning roller 18, the third gear 25 meshing with the third toothed plates 24.

[0049] In one embodiment of this application, when the third gear 25 rotates on the third gear plate 24, it drives the connected cleaning roller 18 to rotate, thereby cleaning the atomizing nozzle 12.

[0050] As an optional implementation, the collection device includes a collection trough 26, which is fixedly connected to the coal mine conveyor belt 4. A receiving hopper 27 is fixedly connected to the top of the collection trough 26, and the bottom of the collection trough 26 is connected to the water storage tank 7 through a conveying pipe 28.

[0051] In one embodiment of this application, the water curtain and dust formed are collected by a collection tank 26.

[0052] As an optional implementation, the filter element includes a filter plate 29 fixedly connected in the collection tank 26. The filter plate 29 has an inverted V-shaped cross section and a scraper is provided on the filter plate 29 for cleaning the filtered material on the filter plate 29.

[0053] In one embodiment of this application, the filter plate 29 is an inverted V-shaped structure used to filter water carrying dust. An external fan can also be connected to the collection tank 26 to generate suction inside and collect the dust-laden water mist. The filter plate 29 is then cleaned by a scraper to avoid clogging and ensure collection efficiency.

[0054] As an optional implementation, the scraping component includes a support frame 30 fixedly connected to the bottom end of the filter plate 29. A vertical rod 31 is slidably connected inside the support frame 30. A spring 32 is sleeved on the vertical rod 31. The top and bottom ends of the spring 32 are fixedly connected to the support frame 30 and the bottom end of the vertical rod 31, respectively. A cleaning frame 33 is fixedly connected to the top end of the vertical rod 31 through the filter plate 29. The cleaning frame 33 is used to clean the filter plate 29. A cam 34 is rotatably connected inside the collection groove 26. The cam 34 is set to contact the top end of the cleaning frame 33.

[0055] In one embodiment of this application, the cleaning frame 33 is driven to move downward by the rotation of the cam 34. The cleaning frame 33 is made of elastic metal. When it moves downward, its bottom end contacts the filter plate 29 and slides downward on the surface, pushing the filtered material to the bottom end. Conversely, the cleaning frame 33 moves upward and separates from the filter plate 29.

[0056] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0057] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A dust suppression spray device at the coal chutes of a fully mechanized longwall mining face, characterized in that, include: The support frame (1) is installed on the top coal caving mining device (3) by means of the moving device (2); The spray assembly includes a horizontal water mist component and a vertical isolation component. The horizontal water mist component is fixedly connected to the front end of the support frame (1) and is used to horizontally atomize and reduce dust during coal falling. The vertical isolation component is fixedly connected to the bottom end of the support frame (1) and is used to form a water mist isolation curtain along the vertical direction. The water mist isolation curtain is used to isolate dust during coal falling. The collection component includes a collector and a filter. The collector is set on the coal mine conveyor belt (4) at the bottom and is located below the water mist isolation curtain for collecting water and dust. The filter is installed inside the collector for filtering dust. Two cleaning components are respectively installed on the horizontal water mist component and the vertical isolation component. The cleaning components are used to clean the water outlet ends on the horizontal water mist component and the vertical isolation component.

2. The dust suppression spray device at the coal chutes of a fully mechanized longwall mining face according to claim 1, characterized in that: The horizontal water mist component includes a first spray pipe (5), the vertical isolation component includes a second spray pipe (6), a water storage tank (7) is fixedly connected to the top coal caving mining device (3), the first spray pipe (5) is connected to the water storage tank (7) through a first conveying pipe (8), the second spray pipe (6) is connected to the water storage tank (7) through a second conveying pipe (9), and several spray components are installed on the first spray pipe (5) and the second spray pipe (6) along the axial direction.

3. The dust suppression spray device at the coal chutes of a fully mechanized longwall mining face according to claim 2, characterized in that: The first spray pipe (5) and the second spray pipe (6) are provided with a plurality of through grooves (10) along the axial direction. The spraying component includes a sealing slide plate (11) rotatably connected in the through groove (10). The sealing slide plate (11) is provided with a plurality of atomizing nozzles (12) along the circumferential direction. The atomizing particle size of the plurality of atomizing nozzles (12) is different.

4. The dust suppression spray device at the coal chutes of a fully mechanized longwall mining face according to claim 3, characterized in that: One end of the sealing slide plate (11) is fixedly connected to a first toothed plate (13). The first spray pipe (5) and the second spray pipe (6) are rotatably connected to a first rotating shaft (14). A plurality of first gears (15) are fixedly connected to the first rotating shaft (14). The first gears (15) mesh with the first toothed plate (13).

5. A dust suppression spray device for coal chutes in fully mechanized longwall mining faces according to claim 3, characterized in that: The cleaning component includes a rotating ring (16) rotatably connected to the first spray pipe (5) and the second spray pipe (6). The rotating ring (16) has a groove (17) and a cleaning roller (18) rotatably connected in the groove (17). Several cleaning brushes (19) are fixedly connected to the cleaning roller (18) and the cleaning brushes (19) are used to clean the atomizing nozzle (12).

6. A dust suppression spray device for coal chutes in fully mechanized longwall mining faces according to claim 5, characterized in that: The rotating ring (16) has an elongated hole (20) and a second toothed plate (21) is fixedly connected inside the elongated hole (20). A second rotating shaft (22) is rotatably connected to the first spray pipe (5) and the second spray pipe (6). A plurality of second gears (23) are fixedly connected to the second rotating shaft (22) and the second gears (23) mesh with the second toothed plate (21).

7. A dust suppression spray device for coal chutes in fully mechanized longwall mining faces according to claim 5, characterized in that: A plurality of third toothed plates (24) are fixedly connected to the first spray pipe (5) and the second spray pipe (6), and a third gear (25) is fixedly connected to the central shaft of the cleaning roller (18), and the third gear (25) meshes with the third toothed plates (24).

8. A dust suppression spray device for coal chutes in fully mechanized longwall mining faces according to claim 2, characterized in that: The collecting component includes a collecting trough (26), which is fixedly connected to the coal mine conveyor belt (4). A receiving bucket (27) is fixedly connected to the top of the collecting trough (26), and the bottom of the collecting trough (26) is connected to the water storage tank (7) through a conveying pipe (28).

9. A dust suppression spray device for coal chutes in fully mechanized longwall mining faces according to claim 8, characterized in that: The filter element includes a filter plate (29) fixedly connected in the collection tank (26). The filter plate (29) has an inverted V-shaped cross section. A scraper is provided on the filter plate (29) for cleaning the filter material on the filter plate (29).

10. A dust suppression spray device for coal chutes in fully mechanized longwall mining faces according to claim 9, characterized in that: The scraping component includes a support frame (30) fixedly connected to the bottom end of the filter plate (29). A vertical rod (31) is slidably connected inside the support frame (30). A spring (32) is sleeved on the vertical rod (31). The top and bottom ends of the spring (32) are fixedly connected to the support frame (30) and the bottom end of the vertical rod (31), respectively. A cleaning frame (33) is fixedly connected through the filter plate (29) at the top end of the vertical rod (31). The cleaning frame (33) is used to clean the filter plate (29). A cam (34) is rotatably connected inside the collection groove (26). The cam (34) is in contact with the top end of the cleaning frame (33).

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