A dust control device with air curtain and closed type for mining construction

Abstract

This utility model relates to the field of dust control equipment technology and discloses a closed-type dust control device with an air curtain for mining operations. It includes a first support frame and a second support frame installed on one side of a continuous mining machine. A motor is fixedly installed on one side of the first support frame, and a threaded rod is fixedly installed at the output end of the motor passing through the first support frame. The end of the threaded rod away from the motor is rotatably connected to the inner wall of the first support frame. A sliding rod is fixedly installed on the inner wall of the second support frame. This utility model utilizes an infrared ranging sensor to monitor the relative position S between the continuous mining machine and the air curtain device in real time. Combined with a controller driving a motor to dynamically adjust the position of the U-shaped frame, the closed air curtain formed by the transverse and radial air curtain generators accurately covers the dust-generating area of ​​the continuous mining machine. This solves the problem of coverage offset caused by the advancement of equipment in traditional fixed air curtains, reduces blind spots in dust control, and ensures the continuity and stability of dust control effects.

Description

Technical Field

[0001] This utility model relates to the field of dust control equipment technology, specifically to a closed-type dust control device with an air curtain for mining operations. Background Technology

[0002] In underground mining operations such as coal mines and metal mines, continuous mining machines, as the core tunneling equipment, need to continuously advance and cut along the working face. During this process, a large amount of high-concentration dust is generated. This dust can not only cause irreversible damage to the respiratory system of construction workers, but may also cause an explosion risk due to dust accumulation. At the same time, dust adhering to the precision parts of the equipment will accelerate wear and significantly shorten the service life of the equipment.

[0003] During mining operations, continuous mining machines need to advance along the working face to perform cutting operations. As the tunneling depth increases, the distance between the machine and the dust control device continues to widen. Traditional air curtain devices are fixed in installation and cannot be adjusted in real time according to the operating status of the continuous mining machine. This causes the air curtain coverage area to gradually become misaligned with the core dust-generating area, resulting in obvious dust control blind spots. A large amount of dust overflows from these blind spots without obstruction, significantly weakening the actual protective effect of the dust control device. Therefore, how to design a closed-type dust control device for mining operations has become a problem that we need to solve. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a closed-loop dust control device for mining operations, solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a closed-type dust control device for mining operations, comprising a first support frame and a second support frame disposed on one side of a continuous miner. A motor is fixedly installed on one side of the first support frame, and a threaded rod is fixedly installed on the output end of the motor passing through the first support frame. The end of the threaded rod away from the motor is rotatably connected to the inner wall of the first support frame. A sliding rod is fixedly installed on the inner wall of the second support frame. A first moving block is threadedly connected to the outer surface of the threaded rod, and a second moving block is slidably connected to the outer surface of the sliding rod. A U-shaped frame is fixedly installed on the top of the first and second moving blocks. Two transverse air curtain generators are installed opposite each other on the inner wall of the U-shaped frame, and two radial air curtain generators are symmetrically installed on the outer surface of the U-shaped frame facing the continuous miner.

[0008] An infrared ranging sensor and a controller are fixedly installed on the outer surface of the U-shaped frame. The infrared ranging sensor is electrically connected to the controller, and the controller is electrically connected to the motor.

[0009] Preferably, an exhaust fan is fixedly installed on one side of the U-shaped frame, and the exhaust fan's outlet extends through the interior of the U-shaped frame.

[0010] Preferably, cleaning blocks are fixedly connected to the opposite sides of the first and second moving blocks via connecting rods. The cleaning blocks have through grooves adapted to the threaded rod and sliding rod inside. An annular cleaning brush is fixedly installed on the inner wall of the through groove inside the cleaning blocks, and the annular cleaning brush contacts the threaded rod and sliding rod.

[0011] Preferably, a dust sensor is fixedly installed on the top of the U-shaped frame, the dust sensor is electrically connected to the controller, and the controller is electrically connected to the transverse air curtain generator and the radial air curtain generator.

[0012] Preferably, a cleaning cylinder is fixedly installed at the air inlet end of the exhaust fan, and a filter screen and an activated carbon layer are installed at intervals on the inner wall of the cleaning cylinder.

[0013] Preferably, the U-shaped frame is made of a composite material of high manganese steel and polyurethane.

[0014] (III) Beneficial Effects

[0015] This utility model provides a closed-type dust control device with an air curtain for mining operations, which has the following beneficial effects:

[0016] Firstly, by using infrared ranging sensors to monitor the relative position of the continuous mining machine and the air curtain device in real time, and in conjunction with the controller driving the motor to dynamically adjust the position of the U-shaped frame, the closed air curtain formed by the transverse air curtain generator and the radial air curtain generator can always accurately cover the dust-generating area of ​​the continuous mining machine. This solves the problem of coverage offset caused by the advancement of equipment in traditional fixed air curtains, reduces dust control blind spots, and ensures the continuity and stability of dust control effect.

[0017] Secondly, the real-time cleaning of the threaded rod and sliding rod is achieved through the follow-up design of the cleaning block and the ring cleaning brush, effectively avoiding transmission jamming caused by dust adhesion, reducing the probability of equipment failure and maintenance intensity. At the same time, the dust sensor can perceive the dust concentration in the enclosed area in real time and feed the data back to the controller to realize the intelligent control of the transverse air curtain generator and the radial air curtain generator. This allows the air curtain parameters to be dynamically adapted to changes in dust concentration, avoiding the problem of excessive or insufficient dust control caused by the fixed parameters of traditional air curtains. It also reduces ineffective energy consumption and improves the dust control accuracy and energy saving of the device in complex dust-generating environments. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the cleaning cylinder structure of this utility model.

[0021] In the diagram: 1. First support frame; 2. Second support frame; 3. Motor; 4. Threaded rod; 5. Sliding rod; 6. First moving block; 7. Second moving block; 8. U-shaped frame; 9. Horizontal air curtain generator; 10. Radial air curtain generator; 11. Infrared ranging sensor; 12. Controller; 13. Exhaust fan; 14. Cleaning block; 15. Annular cleaning brush; 16. Dust sensor; 17. Cleaning cylinder; 18. Filter screen; 19. Activated carbon layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0025] like Figure 1-3As shown, this utility model provides a technical solution: a closed-type dust control device for mining operations, including a first support frame 1 and a second support frame 2 installed on one side of a continuous miner. A motor 3 is fixedly installed on one side of the first support frame 1. A threaded rod 4 is fixedly installed on the output end of the motor 3 through the first support frame 1. The end of the threaded rod 4 away from the motor 3 is rotatably connected to the inner wall of the first support frame 1. A sliding rod 5 is fixedly installed on the inner wall of the second support frame 2. A first moving block 6 is threadedly connected to the outer surface of the threaded rod 4. A second moving block 7 is slidably connected to the outer surface of the sliding rod 5. A U-shaped frame 8 is fixedly installed on the top of the first moving block 6 and the second moving block 7. The U-shaped frame 8 is made of a composite material of high manganese steel and polyurethane. This composite material has high strength, wear resistance, and corrosion resistance, and can adapt to the high dust and strong vibration environment of the mining face, extending the service life of the device.

[0026] Furthermore, two transverse air curtain generators 9 are installed opposite each other on the inner wall of the U-shaped frame 8. The two transverse air curtain generators 9 can form an air wall to reduce the amount of dust passing through the U-shaped frame 8. Two radial air curtain generators 10 are symmetrically installed on the outer surface of the U-shaped frame 8 facing the continuous mining machine. The radial air curtain generators 10 can blow dust back to the dust control area inside the U-shaped frame 8, further improving the dust control effect. An infrared ranging sensor 11 and a controller 12 are fixedly installed on the outer surface of the U-shaped frame 8. The infrared ranging sensor 11 is electrically connected to the controller 12, and the controller 12 is electrically connected to the motor 3.

[0027] Furthermore, a dust sensor 16 is fixedly installed on the top of the U-shaped frame 8. The dust sensor 16 is electrically connected to the controller 12, and the controller 12 is electrically connected to the transverse air curtain generator 9 and the radial air curtain generator 10. The dust sensor 16 detects the dust concentration in the enclosed area in real time and transmits the data to the controller 12. The controller 12 automatically adjusts the wind speed and air volume of the transverse air curtain generator 9 and the radial air curtain generator 10 according to the concentration value to achieve precise dust control.

[0028] Furthermore, an exhaust fan 13 is fixedly installed on one side of the U-shaped frame 8. The exhaust fan 13 extends through the interior of the U-shaped frame 8, drawing outside air into the dust control area inside the U-shaped frame 8 to prevent negative pressure from forming in the enclosed space. A cleaning cylinder 17 is fixedly installed at the air inlet of the exhaust fan 13. The inner wall of the cleaning cylinder 17 is fitted with filters 18 and activated carbon layers 19 at intervals. The dust-laden air drawn in by the exhaust fan 13 first passes through the filters 18 to filter out large dust particles, and then passes through the activated carbon layers 19 to adsorb fine dust before being discharged into the dust control area inside the U-shaped frame 8.

[0029] Furthermore, cleaning blocks 14 are fixedly connected to the opposite sides of the first moving block 6 and the second moving block 7 via connecting rods. The cleaning block 14 has a through groove adapted to the threaded rod 4 and the sliding rod 5. An annular cleaning brush 15 is fixedly installed on the inner wall of the through groove. The annular cleaning brush 15 contacts the threaded rod 4 and the sliding rod 5. When the first moving block 6 and the second moving block 7 move, the cleaning block 14 moves synchronously. The annular cleaning brush 15 cleans the surface of the threaded rod 4 and the sliding rod 5 in real time to prevent dust from adhering and causing transmission jamming, thereby improving the stability of equipment operation.

[0030] The working process of this utility model is as follows: After the device is started, the infrared ranging sensor 11 detects the distance between the U-shaped frame 8 and the continuous mining machine in real time and feeds it back to the controller 12. When the continuous mining machine moves and causes the distance to change, the controller 12 starts the motor 3 to drive the threaded rod 4 to rotate, so that the first moving block 6 and the second moving block 7 drive the U-shaped frame 8 to move synchronously. The two transverse air curtain generators 9 can form an air wall to reduce the situation of dust passing through the U-shaped frame 8. The two radial air curtain generators 10 can blow the dust back to the dust control area inside the U-shaped frame 8, further improving the dust control effect.

[0031] 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.

[0032] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A closed-type dust control device for mining operations, comprising a first support frame (1) and a second support frame (2) installed on one side of a continuous miner, characterized in that: A motor (3) is fixedly installed on one side of the first support frame (1). A threaded rod (4) is fixedly installed on the output end of the motor (3) through the first support frame (1). The end of the threaded rod (4) away from the motor (3) is rotatably connected to the inner wall of the first support frame (1). A sliding rod (5) is fixedly installed on the inner wall of the second support frame (2). A first moving block (6) is threadedly connected to the outer surface of the threaded rod (4). A second moving block (7) is slidably connected to the outer surface of the sliding rod (5). A U-shaped frame (8) is fixedly installed on the top of the first moving block (6) and the second moving block (7). Two transverse air curtain generators (9) are installed opposite each other on the inner wall of the U-shaped frame (8). Two radial air curtain generators (10) are symmetrically installed on the outer surface of the U-shaped frame (8) facing the continuous mining machine. An infrared ranging sensor (11) and a controller (12) are fixedly installed on the outer surface of the U-shaped frame (8). The infrared ranging sensor (11) is electrically connected to the controller (12), and the controller (12) is electrically connected to the motor (3).

2. The enclosed dust control device for mining operations according to claim 1, characterized in that: A fan (13) is fixedly installed on one side of the U-shaped frame (8), and the air outlet of the fan (13) passes through the interior of the U-shaped frame (8).

3. The enclosed dust control device for mining operations according to claim 1, characterized in that: The first moving block (6) and the second moving block (7) are fixedly connected to the cleaning blocks (14) on opposite sides by connecting rods. The cleaning blocks (14) have through grooves that are compatible with the threaded rod (4) and the sliding rod (5). The inner wall of the through grooves is fixedly installed with an annular cleaning brush (15). The annular cleaning brush (15) contacts the threaded rod (4) and the sliding rod (5).

4. The enclosed dust control device for mining operations according to claim 1, characterized in that: A dust sensor (16) is fixedly installed on the top of the U-shaped frame (8). The dust sensor (16) is electrically connected to the controller (12). The controller (12) is electrically connected to the transverse air curtain generator (9) and the radial air curtain generator (10).

5. A closed-type dust control device for mining operations according to claim 2, characterized in that: The air inlet of the exhaust fan (13) is fixedly installed with a cleaning cylinder (17), and the inner wall of the cleaning cylinder (17) is fitted with a filter screen (18) and an activated carbon layer (19) at intervals.

6. The enclosed dust control device for mining operations according to claim 1, characterized in that: The U-shaped frame (8) is made of high manganese steel and polyurethane composite material.

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