Dustproof chamber of mine draw shaft

Abstract

The utility model belongs to the technical field of dust falling equipment, and discloses a mine draw shaft dustproof chamber which comprises a draw shaft arranged on the ground of a mine tunnel, an ore drawing grizzly screen is arranged at the opening portion of the draw shaft, a bearing frame is fixedly installed on the top of the draw shaft, and a self-opening dustproof door is obliquely arranged on one side of the bearing frame. A self-opening dustproof door is arranged on the lifting dustproof cover, two mine car rails are arranged on one side of the self-opening dustproof door side by side, and a sensor and a control box are arranged at the position, corresponding to the self-opening dustproof door, between the two mine car rails. Meanwhile, the dry fog dust suppressor plays a role, dust can be well suppressed, and pollutants such as dust are controlled to be diffused to the whole mine tunnel; the working conditions of field workers are greatly improved, occupational injury is reduced, normal mining operation cannot be hindered due to the liftable arrangement, meanwhile, the service life of equipment can be guaranteed, the probability of accidental damage can be lowered, and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust reduction equipment, and particularly relates to a dust-proof chamber for a mine ore pass. Background Art

[0002] After metal ores such as copper ores or gold ores are mined in underground mines, the ores need to be concentrated to one or more levels and then lifted to the surface through shaft skip hoists for beneficiation. Before that, the ores are transported to the ore pass opening by a middle-level transport electric locomotive, and then the ore waste is unloaded from the ore pass opening to the bottom middle level and finally concentrated for lifting. This is a common practice both internationally and domestically. This method has low cost and high efficiency, but inevitably generates dust during the ore dumping process, which has an adverse impact on the respiratory systems of on-site workers, especially middle-level transport workers and ore-dumping workers. And because the ore pass is vertically through, even if there is no ore dumping in this middle level, the ore dumping in the adjacent upper and lower middle levels will also generate a large amount of dust and fog at the ore pass opening of this middle level. Content of the Utility Model

[0003] The purpose of the utility model is to provide a dust-proof chamber for a mine ore pass to solve the problems in the above-mentioned prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A dust-proof chamber for a mine ore pass, including an ore pass opened on the mine roadway ground. A discharge grizzly is arranged at the opening of the ore pass. A load-bearing frame is fixedly installed at the top of the ore pass. An automatically-opening dust-proof door is inclinedly arranged on one side of the load-bearing frame. Two ore car tracks are arranged side by side on one side of the automatically-opening dust-proof door. A sensor and a control box are arranged between the two ore car tracks and corresponding to the automatically-opening dust-proof door. A lifting dust-proof cover is arranged at the top of the load-bearing frame. An exhaust pipe is arranged on one side of the top of the lifting dust-proof cover. A suction fan is arranged at the air outlet of the exhaust pipe;

[0006] The lifting dust-proof cover includes a ceiling frame. The four weeks of the bottom of the ceiling frame are fixedly installed with the top of a ring-shaped dust-proof curtain. Several connecting cross bars are fixedly installed at equal intervals along the vertical direction on each side of the dust-proof curtain. The bottom of the lowermost connecting cross bar is fixedly connected with one end of a cable. The other end of the cable passes through the connecting cross bars on the same side from bottom to top in sequence and is connected to the inside of a winding device. The winding device is arranged between the load-bearing frame and the ceiling frame;

[0007] The sensor, the suction fan, the automatically-opening dust-proof door and the winding device are all electrically connected to the control box through wires.

[0008] In a preferred embodiment of the utility model, a counterweight block is fixedly connected to the bottom of the lowermost connecting cross bar. A hollow sealing strip is fixedly connected to the bottom of the counterweight block. The bottom of the hollow sealing strip is arc-shaped.

[0009] In a preferred embodiment of the present utility model, the winding device includes a driving motor, which is fixedly installed on the top of the load-bearing frame through a frame. The output shaft of the driving motor is fixedly connected with a main driving gear, and transmission gears are meshed with each side of the dust-proof curtain corresponding to the periphery of the main driving gear. The transmission gears are fixedly connected to the bottom of the winch, and the top of the winch is connected to the bottom of the ceiling frame by bearings.

[0010] In a preferred embodiment of the present utility model, a connecting ring is fixedly connected to one side of the connecting cross bar close to the ore pass. The bottom end of the cable is tied to the lowermost connecting ring, and the top end of the cable sequentially passes through each connecting ring from bottom to top and is wound around the winch.

[0011] In a preferred embodiment of the present utility model, the self-opening dust-proof door includes a door frame and a door body. The door frame is fixedly installed on one side of the load-bearing frame and is arranged at an acute angle with the ore pass. Guide rails are fixedly connected to the left and right sides of the top surface of the door frame. Travel wheels are rotatably connected to the top and bottom of the left and right sides of the door body. Hydraulic cylinders are fixedly installed on the left and right sides of the door frame. The end of the output shaft of the hydraulic cylinder is fixedly installed at the left and right ends of the top of the door body. The door body is slidably connected between the two guide rails through the travel wheels.

[0012] The beneficial effects of the present utility model are:

[0013] The present utility model opens through the self-opening dust-proof door, forms a sealed chamber by lowering the lifting dust-proof cover, and starts the exhaust fan to effectively collect dust and mist. At the same time, when the dry fog dust suppressor takes effect, it can suppress dust well and control the diffusion of pollutants such as dust to the entire mine tunnel; when the ore truck does not unload ore, the self-opening dust-proof door closes to prevent the dust and mist generated by unloading ore in other levels from affecting this level. Therefore, this dust-proof chamber can greatly reduce the dust and mist generated at the ore pass, greatly improve the working conditions of on-site operators, reduce the occurrence of occupational disease injuries, and the liftable setting will not interfere with normal mining operations. At the same time, it can also ensure the service life of the equipment and reduce the probability of accidental damage, reducing the operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic plan view of the present utility model;

[0015] Figure 2 is Figure 1 an enlarged schematic view at A;

[0016] Figure 3 is Figure 1 an enlarged schematic view at B;

[0017] Figure 4 It is a schematic plan view of a self - starting dust - proof door.

[0018] Reference numerals; wherein, 1, ore pass; 2, sensor; 3, mine car track; 4, self - starting dust - proof door; 401, door frame; 402, hydraulic cylinder; 403, door body; 404, walking wheel; 405, guide rail; 5, lifting dust - proof cover; 501, ceiling frame; 502, cable; 503, dust - proof curtain; 504, winding device; 5041, drive motor; 5042, main drive gear; 5043, transmission gear; 5044, winch; 505, connecting cross bar; 506, counterweight; 507, connecting ring; 508, hollow sealing strip; 6, dust - exhaust pipe; 7, exhaust fan; 8, load - bearing frame; 9, control box. Detailed implementation manners

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the present invention in combination with the accompanying drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation to the present invention.

[0020] Embodiment:

[0021] As Figures 1-4 shown, this embodiment provides a dust - proof chamber for a mine ore pass, including an ore pass 1 opened on the mine roadway ground. A discharge grizzly is arranged at the opening of the ore pass 1. A load - bearing frame 8 is fixedly installed at the top of the ore pass 1. A self - starting dust - proof door 4 is obliquely arranged on one side of the load - bearing frame 8. Two mine car tracks 3 are arranged side by side on one side of the self - starting dust - proof door 4. A sensor 2 and a control box 9 are arranged between the two mine car tracks 3 and corresponding to the self - starting dust - proof door 4. A lifting dust - proof cover 5 is arranged at the top of the load - bearing frame 8. A dust - exhaust pipe 6 is arranged on one side at the top of the lifting dust - proof cover 5. An exhaust fan 7 is arranged at the air outlet of the dust - exhaust pipe 6;

[0022] The lifting dust - proof cover includes a ceiling frame 501. The four - week bottom of the ceiling frame 501 is fixedly installed with the top of a ring - shaped dust - proof curtain 503. Several connecting cross bars 505 are fixedly installed at equal intervals along the vertical direction on each side of the dust - proof curtain 503. The bottom - most connecting cross bar 505 is fixedly connected with one end of a cable 502. The other end of the cable 502 passes through the connecting cross bars 505 on the same side from bottom to top and is connected to the inside of the winding device 504. The winding device 504 is arranged between the load - bearing frame 8 and the ceiling frame 501;

[0023] The sensor 2, the exhaust fan 7, the self-opening dust-proof door 4 and the winding device 504 are all electrically connected to the control box 9 through wires.

[0024] Specifically, as Figures 1-2 shown, by setting a self-opening dust-proof door 4 at the opening of the ore pass 1, when the ore truck travels to the ore pass 1 through the ore truck track 3 and is detected by the sensor 2, the winding device 504 of the lifting dust-proof cover 5 is controlled by the control box 9 to drive the lifting dust-proof curtain 503 to extend and descend to the ground, so as to completely seal the ore pass 1. At the same time, the exhaust fan 7 is started to discharge the air inside the lifting dust-proof cover 5 to the outside, and the self-opening dust-proof door 4 is controlled by the control box 9 to open. At this time, the ore in the ore truck can be poured into the ore pass 1;

[0025] When the ore truck unloads ore, by opening the self-opening dust-proof door 4, forming a sealed chamber by the descent of the lifting dust-proof cover 5, and starting the exhaust fan 7, the dust and mist can be effectively collected. At the same time, when the dry fog dust suppression device works, it can suppress dust well and control the diffusion of pollutants such as dust to the entire mine tunnel; when the ore truck does not unload ore, the self-opening dust-proof door 4 is closed to avoid the dust and mist generated by the unloading of other levels from affecting this level. Thus, this dust-proof chamber can greatly reduce the dust and mist generated at the opening of the ore pass 1, greatly improve the working conditions of on-site operators, reduce the occurrence of occupational diseases, and the liftable setting will not interfere with normal mining operations. At the same time, it can also ensure the service life of the equipment and reduce the probability of accidental damage, reducing the operation and maintenance costs.

[0026] In a preferred embodiment of the present utility model, further, a counterweight 506 is fixedly connected to the bottom of the bottom connection cross bar 505, and a hollow sealing strip 508 is fixedly connected to the bottom of the counterweight 506. The bottom of the hollow sealing strip 508 is arc-shaped. By setting the hollow sealing strip and cooperating with the counterweight 506, when the dust-proof curtain 503 descends, it can be more easily flattened, preventing bending or incomplete descent and affecting the sealing effect. At the same time, by pressing the hollow sealing strip 508 with the counterweight 506, the sealing effect can be further improved to prevent the leakage of dust during ore unloading.

[0027] In a preferred embodiment of the present utility model, further, the winding device 504 includes a driving motor 5041. The driving motor 5041 is fixedly installed on the top of the load-bearing frame 8 through a frame. The output shaft of the driving motor 5041 is fixedly connected with a main driving gear 5042. Transmission gears 5043 are meshed with each side of the dust-proof curtain 503 corresponding to the periphery of the main driving gear 5042. The transmission gears 5043 are fixedly connected to the bottom of the winch 5044. The top of the winch 5044 is connected to the bottom of the ceiling frame 501 by a bearing.

[0028] Specifically, as Figure 3As shown in the figure, by controlling the forward and reverse rotation of the drive motor 5041 through the control box 9, the main drive gear 5042 is driven to rotate, driving the rotation of each transmission gear 5043, and then driving the rotation of each winch 5044 to wind or unwind the cable 502. Thus, by lifting the bottom connection crossbar 505 locally, each connection crossbar 505 is lifted to the ceiling frame 501, realizing the winding and unwinding operation of the dust-proof curtain 503.

[0029] In a preferred embodiment of the present invention, further, a connection ring 507 is fixedly connected to the side of the connection crossbar 505 close to the ore pass 1. The bottom end of the cable 502 is tied to the bottom connection ring 507, and the top end of the cable 502 passes through each connection ring 507 from bottom to top and is wound around the winch 5044.

[0030] In a preferred embodiment of the present invention, further, the self-opening dust-proof door 4 includes a door frame 401 and a door body 403. The door frame 401 is fixedly installed on one side of the bearing frame 8 and is arranged at an acute angle with the ore pass 1. Guide rails 405 are fixedly connected to the left and right sides of the top surface of the door frame 401. Travel wheels 404 are rotatably connected to the top and bottom of the left and right sides of the door body 403. Hydraulic cylinders 402 are fixedly installed on the left and right sides of the door frame 401. The end of the output shaft of the hydraulic cylinder 402 is fixedly installed at the left and right ends of the top of the door body 403. The door body 403 is slidably connected between the two guide rails 405 through the travel wheels 404.

[0031] Specifically, as Figure 4 shown in the figure, when the self-opening dust-proof door needs to be opened, the hydraulic cylinder 402 is controlled to extend through the control box 9, so that its output shaft jacks up the door body 403 to open. At the same time, the door body 403 slides along the guide rails 405 arranged on the door frame 401 under the support of the travel wheels 404.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust-proof chamber for a mine ore pass, comprising an ore pass (1) formed by excavating on the mine roadway floor, wherein a discharge grizzly is arranged at the opening of the ore pass (1), and is characterized in that: A load-bearing frame (8) is fixedly installed at the top of the ore pass (1). An automatically-opening dust-proof door (4) is inclined on one side of the load-bearing frame (8). Two mine car tracks (3) are arranged side by side on one side of the automatically-opening dust-proof door (4). A sensor (2) and a control box (9) are arranged between the two mine car tracks (3) and corresponding to the automatically-opening dust-proof door (4). A lifting dust-proof cover (5) is arranged at the top of the load-bearing frame (8). A dust exhaust pipe (6) is arranged on one side of the top of the lifting dust-proof cover (5). An exhaust fan (7) is arranged at the air outlet of the dust exhaust pipe (6). The lowering dust-proof cover includes a ceiling frame (501). The four peripheries of the bottom of the ceiling frame (501) are fixedly installed with the top of a ring-shaped dust-proof curtain (503). Several connecting cross bars (505) are fixedly installed at equal intervals in the vertical direction on each side of the dust-proof curtain (503). The bottom of the lowermost connecting cross bar (505) is fixedly connected with one end of a cable (502). The other end of the cable (502) sequentially passes through each of the connecting cross bars (505) on the same side from bottom to top and accesses the inside of a winding device (504). The winding device (504) is arranged between the load-bearing frame (8) and the ceiling frame (501). The sensor (2), the exhaust fan (7), the automatically-opening dust-proof door (4) and the winding device (504) are all electrically connected to the control box (9) through wires.

2. The dust-proof chamber for a mine ore pass according to claim 1, wherein: A counterweight block (506) is fixedly connected to the bottom of the lowermost connecting cross bar (505). A hollow sealing strip (508) is fixedly connected to the bottom of the counterweight block (506). The bottom of the hollow sealing strip (508) is arc-shaped.

3. The dust-proof chamber for a mine ore pass according to claim 2, wherein: The winding device (504) includes a driving motor (5041). The driving motor (5041) is fixedly installed on the top of the load-bearing frame (8) through a frame. The output shaft of the driving motor (5041) is fixedly connected with a main driving gear (5042). Transmission gears (5043) are engaged with the periphery of the main driving gear (5042) corresponding to each surface of the dust-proof curtain (503). The transmission gears (5043) are fixedly connected to the bottom of a winch (5044). The top of the winch (5044) is connected to the bottom of the ceiling frame (501) through a bearing.

4. The dust-proof chamber for a mine ore pass according to claim 3, characterized in that: A connecting ring (507) is fixedly connected to the side of the connecting cross bar (505) close to the ore pass (1). The bottom end of the cable (502) is tied to the lowermost connecting ring (507). The top end of the cable (502) sequentially passes through each of the connecting rings (507) from bottom to top and is wound around the winch (5044).

5. A mine shaft dust-proof chamber according to claim 1, characterized in that: The self-opening dust-proof door (4) includes a door frame (401) and a door body (403). The door frame (401) is fixedly installed on one side of the load-bearing frame (8) and is arranged at an acute angle with the chute (1). Guide rails (405) are fixedly connected to the left and right sides of the top surface of the door frame (401). Travel wheels (404) are rotatably connected to the top and bottom of the left and right sides of the door body (403). Hydraulic cylinders (402) are fixedly installed on the left and right sides of the door frame (401). The end of the output shaft of the hydraulic cylinder (402) is fixedly installed at the left and right ends of the top of the door body (403). The door body (403) is slidably connected between the two guide rails (405) through the travel wheels (404).

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