Underground intermittent foam dust settling device for coal mine

Abstract

The invention discloses a coal mine underground intermittent foam dust falling device, and belongs to the field of coal mine underground dust treatment. Comprising a cavity, transverse plates are symmetrically and fixedly connected to the left side of the interior of the cavity, rotating grooves are formed in the right ends of the transverse plates, gears are rotatably connected to the interiors of the rotating grooves through rotating columns, bubble outlet rods are fixedly connected to the outer side walls of the gears, and sliding grooves are formed in the upper surface of the cavity; the outer side walls of the bubble outlet rods are slidably connected with the inner sides of the sliding grooves, square openings are formed in the right side of the cavity, and extending cavities are fixedly connected into the square openings. According to the device, the motor and the draw-off pump are accurately controlled through the timing signal generator, and intermittent spraying of foam is achieved. According to the intermittent foam discharging mode, on one hand, foam resource waste caused by continuous foam discharging is avoided, foam using is more economical and efficient, the foam resources can be reasonably distributed according to the actual underground dust condition, foam discharging is accurate when dust falling is needed, and cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of dust treatment in coal mines, and particularly to an intermittent foam dust suppression device for coal mines underground. Background Art

[0002] In coal mine underground operations, dust pollution is a serious problem. It not only endangers the physical health of workers, such as causing occupational diseases like pneumoconiosis, but also increases safety hazards underground, such as triggering accidents like dust explosions. Traditional dust suppression methods have many limitations. For example, the effect of water sprinkling dust suppression is greatly affected by the complex terrain and airflow underground, and it may cause water accumulation and affect production; dry dust suppression methods such as ventilation dust removal are difficult to effectively remove fine dust and will cause dust diffusion. Therefore, a more efficient and safe dust suppression technology is needed. With the development of technology, foam dust suppression has gradually attracted attention. It can effectively settle dust particles through the adsorption and wrapping effects of foam;

[0003] However, the existing foam dust suppression devices still face many problems in practical applications. For example, they cannot well control the spraying angle of foam, the dust suppression effect is unstable, and there is a lack of reasonable intermittent operation, resulting in waste of resources or poor dust suppression effect. At the same time, the mobility and adaptability of the existing devices to the complex underground environment are also poor, and it is difficult to meet the requirements of efficient, safe, and stable dust suppression in coal mines underground. Summary of the Invention

[0004] Object of the Invention: The object of the present invention is to provide reasonable intermittent operation; another object of the present invention is to provide stable dust suppression effect by controlling the spraying angle of foam.

[0005] Technical Solution: An intermittent foam dust suppression device for coal mines underground includes a cavity. Horizontally arranged plates are symmetrically and fixedly connected to the left side inside the cavity. Rotation grooves are provided at the right ends of the horizontally arranged plates. Gears are rotatably connected to the inside of the rotation grooves through rotating columns. Foam outlet rods are fixedly connected to the outer side walls of the gears. A sliding groove is provided on the upper surface of the cavity. The outer side walls of the foam outlet rods are slidably connected to the inside of the sliding groove. A square opening is provided on the right side of the cavity. Extension cavities are fixedly connected to the inside of the square opening. Sliding plates are slidably connected to the inside of the extension cavities. Rack bars are fixedly connected to the left side of the upper surfaces of the sliding plates. The rack bars are engaged with the gears. A foam storage cavity is fixedly connected to the left side of the cavity. Communication pipes are fixedly connected to the front surfaces of the horizontally arranged plates. The right ends of the communication pipes are fixedly connected to the foam outlet rods. The left ends of the communication pipes penetrate into the inside of the foam storage cavity and are fixedly connected with extraction pumps.

[0006] Further, a gas outlet adjustment cavity is fixedly connected to the front surface of the cavity body. A motor is fixedly connected to the front surface of the gas outlet adjustment cavity. The front end of the output end of the motor penetrates into the interior of the gas outlet adjustment cavity and is fixedly connected to a cam. Two air-squeezing plates are symmetrically and slidably connected to the interior of the gas outlet adjustment cavity. Springs are fixedly connected between the opposite sides of the air-squeezing plates and the interior of the gas outlet adjustment cavity.

[0007] Further, a stop rod is fixedly connected to the outer side wall of the rear end of the motor. A limiting rod is fixedly connected to the front surface of the gas outlet cavity, on the left side of the motor. Two air outlet pipes are symmetrically and fixedly connected to the outer side wall of the gas outlet adjustment cavity. The ends of the air outlet pipes away from the gas outlet adjustment cavity are respectively fixedly communicated with the extension cavity.

[0008] Further, a timing signal generator is fixedly connected to the left side of the front surface of the cavity body. The timing signal generator is signal-connected to the motor and the extraction pump.

[0009] Further, foam outlet heads are fixedly connected to the tops of the foam outlet rods.

[0010] Further, a support plate is fixedly connected to the lower surface of the cavity body. A plurality of self-locking universal wheels are symmetrically and fixedly connected to the lower surface of the support plate.

[0011] Beneficial effects: Through the precise control of the motor and the extraction pump by the timing signal generator, the device realizes the intermittent ejection of foam. This intermittent foaming method, on the one hand, avoids the waste of foam resources caused by continuous foaming, making the use of foam more economical and efficient. It can reasonably allocate foam resources according to the actual dust situation in the mine, accurately produce foam when dust reduction is needed, and reduce costs. On the other hand, intermittent foaming can prevent the underground environment from being too humid due to the long-term presence of foam, reducing potential safety hazards caused by excessive wetness, such as slipping and electrical equipment being damaged by moisture and short-circuiting. At the same time, intermittent foaming allows natural ventilation in the underground environment during the foaming interval, maintaining a certain air circulation, which helps to improve the comfort of the underground environment, provides a safer and more comfortable working environment for operators, and ensures the stability and efficiency of underground production.

[0012] The design of adjustable foaming angle in the device brings multiple benefits. The outer wall of the foaming rod is slidably connected to the chute on the upper surface of the cavity. Its movement is driven by a gear, and the gear is in turn driven by the rack on the sliding plate. By changing the movement trajectory and position of the sliding plate, the position of the foaming rod can be indirectly adjusted, thereby changing the foaming angle of the foaming head. Such a design enables the device to flexibly adjust the foaming angle according to the dust suppression requirements in different areas of the underground mine, achieving precise dust suppression at different heights, in different directions, and in different areas, improving the pertinence and effectiveness of dust suppression. For example, for some areas with dust accumulation at high places or in corners, the foaming angle can be adjusted to better cover them, avoiding dust suppression dead corners caused by a fixed foaming angle, enabling the foam to be more evenly distributed in the entire underground space, thus significantly enhancing the effect and scope of dust suppression, more effectively suppressing the diffusion and flying of underground dust, and ensuring the safety of underground operations and the normal operation of production equipment. Brief Description of the Drawings

[0013] Figure 1 is the overall structural schematic diagram of the present invention;

[0014] Figure 2 is the sectional structural schematic diagram of the cavity of the present invention;

[0015] Figure 3 is the sectional structural schematic diagram of the extension cavity of the present invention;

[0016] Figure 4 is the sectional structural schematic diagram of the air outlet adjusting cavity of the present invention;

[0017] Figure 5 is the sectional structural schematic diagram of the foam storage cavity of the present invention.

[0018] In the figure: 1, cavity; 2, cross plate; 3, rotating groove; 4, gear; 5, foaming rod; 6, chute; 8, square opening; 9, extension cavity; 10, sliding plate; 11, rack; 12, foam storage cavity; 13, connecting pipe; 14, extraction pump; 15, air outlet adjusting cavity; 16, motor; 17, cam; 18, air squeezing plate; 19, spring; 19, stop rod; 20, limiting rod; 21, air outlet pipe; 22, timing signal generator; 7, foaming head; 23, support plate; 24, self-locking universal wheel; 25, stop rod. Detailed Description of the Preferred Embodiment

[0019] To make the technical solutions of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.

[0020] Embodiment 1

[0021] As Figures 1-5As shown in the figure, an intermittent foam dust suppression device for underground coal mines is provided, including a cavity 1. On the left side inside the cavity 1, there are symmetrically fixed cross plates 2. At the right ends of the cross plates 2, there are rotation grooves 3 opened. Inside the rotation grooves 3, there are gears 4 rotatably connected through rotating columns. On the outer side walls of the gears 4, there are fixed foam outlet rods 5. On the upper surface of the cavity 1, there is a sliding groove 6. The outer side walls of the foam outlet rods 5 are slidably connected to the inner side of the sliding groove 6. On the right side of the cavity 1, there is a square opening 8. Inside the square opening 8, there are fixed extension cavities 9. Inside the extension cavities 9, there are sliding plates 10 slidably connected. On the left side of the upper surface of the sliding plates 10, there are fixed racks 11. The racks 11 are all engaged with the gears 4. On the left side of the cavity 1, there is a foam storage cavity 12. On the front surface of the cross plate 2, there is a communicating pipe 13 fixedly connected. The right ends of the communicating pipes 13 are fixedly connected to the foam outlet rods 5. The left ends of the communicating pipes 13 all penetrate into the interior of the foam storage cavity 12 and are fixedly connected with extraction pumps 14. At the top ends of the foam outlet rods 5, there are fixed foam outlet nozzles 7;

[0022] First of all, the sliding plate 10 starts to slide inside the extension cavity 9. Since the rack 11 fixedly connected to the left side of the upper surface of the sliding plate 10 is engaged with the gear 4, the sliding of the sliding plate 10 will drive the rack 11 to move synchronously, and then drive the gear 4 to rotate around the rotating column inside the rotation groove 3 at the right end of the cross plate 2. While the gear 4 rotates, the foam outlet rod 5 fixed on its outer side wall also moves accordingly, and the outer side wall of the foam outlet rod 5 is slidably connected to the inner side of the sliding groove 6 on the upper surface of the cavity 1, ensuring that the foam outlet rod 5 moves along the established track. At the same time, the extraction pump 14 is started to extract the foam liquid in the foam storage cavity 12, and through the communicating pipe 13 fixedly connected to the front surface of the cross plate 2, it is transported into the foam outlet rod 5. Finally, the foam outlet rod 5 filled with foam liquid transports the liquid to the foam outlet nozzle 7 at the top end, and the foam outlet nozzle 7 sprays the foam liquid in the form of foam, realizing the intermittent dust suppression operation for underground coal mines.

[0023] In this embodiment, on the front surface of the cavity 1, there is a gas outlet adjustment cavity 15 fixedly connected. On the front surface of the gas outlet adjustment cavity 15, there is a motor 16 fixedly connected. The front end of the output end of the motor 16 penetrates into the interior of the gas outlet adjustment cavity 15 and is fixedly connected with a cam 17. Inside the gas outlet adjustment cavity 15, there are symmetrically slidable air extrusion plates 18. On the opposite sides of the air extrusion plates 18, there are springs 19 fixedly connected to the interior of the gas outlet adjustment cavity 15. On the outer side wall at the rear end of the motor 16, there is a stop rod 25. On the front surface of the gas outlet cavity 15, on the left side of the motor 16, there is a limit rod 20 fixedly connected. On the outer side wall of the gas outlet adjustment cavity 15, there are symmetrically fixedly connected air outlet pipes 21. One end of the air outlet pipe 21 far away from the gas outlet adjustment cavity 15 is fixedly connected to the extension cavity 9 respectively. On the left side of the front surface of the cavity 1, there is a timing signal generator 22 fixedly connected. The timing signal generator 22 is in signal connection with the motor 16 and the extraction pump 14;

[0024] When the device starts to work, first, the timing signal generator 22 sets the time and controls the signals. The timing signal generator 22 is located on the left side of the front surface of the cavity 1, and it is signal - connected to the motor 16 and the extraction pump 14. During the working process, the timing signal generator 22 sends signals to the motor 16 and the extraction pump 14 at preset time intervals. When receiving the signals, the motor 16 starts to rotate clockwise. The front end of its output penetrates into the air - outlet adjustment cavity 15 and drives the cam 17 to rotate. The cam 17 rotates in the air - outlet adjustment cavity 15 and periodically squeezes the air - squeezing plates 18 which are symmetrically and slidably connected. The opposite sides of the air - squeezing plates 18 are connected to the air - outlet adjustment cavity 15 through springs 19. Therefore, when being squeezed by the cam, the springs will be compressed and at the same time, the gas in the cavity will be compressed.

[0025] When receiving the signals again, the motor 16 starts to rotate counter - clockwise. The stop rod 25 on the outer side wall of the rear end of the motor 16 cooperates with the limit rod 20 to ensure the rotation direction of the motor. The compressed gas enters the extension cavity 9 through the symmetric air - outlet pipes 21 on the outer side wall of the air - outlet adjustment cavity 15, and pushes the slide plate 10 in the extension cavity 9 to slide. The rack 11 on the slide plate 10 drives the gear 4 to rotate, and then makes the bubble - emitting rod 5 move along the chute 6 on the upper surface of the cavity 1. At the same time, after receiving the signal from the timing signal generator 22, the extraction pump 14 starts to work, extracts the foam liquid in the foam storage cavity 12 to the bubble - emitting rod 5 through the connecting pipe 13, and finally sprays the foam from the foam - emitting head 7 at the top of the bubble - emitting rod 5, realizing the intermittent dust - suppression operation in the coal mine. The function of the timing signal generator 22 is to accurately control the working time intervals of the motor 16 and the extraction pump 14, so as to ensure that the whole dust - suppression device works intermittently and regularly according to the set time period, improve the dust - suppression efficiency, avoid excessive energy consumption, and at the same time ensure the effectiveness and reliability of the dust - suppression operation.

[0026] In this embodiment, a support plate 23 is fixedly connected to the lower surface of the cavity 1, and a plurality of self - locking universal wheels 24 are symmetrically and fixedly connected to the lower surface of the support plate 23;

[0027] The support plate 23 is fixed to the lower surface of the cavity 1, providing a stable support for the device. It can evenly disperse the weight and transfer it to the self - locking universal wheels 24, ensuring the balance and stability of the device. The self - locking universal wheels 24 are symmetrically installed on the lower surface of the support plate 23 and have the functions of self - locking and universal rotation. Self - locking can fix the position of the device during work, prevent it from moving due to external forces, and ensure the dust - suppression effect; the universal rotation function is convenient for flexible turning and moving in the complex terrain underground, facilitating the adjustment of the position. The plurality of self - locking universal wheels can also disperse the weight, enhance the load - bearing capacity, make it more adaptable to the underground environment, and facilitate the deployment and use of the device.

[0028] The above embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. An intermittent foam dust suppression device for underground coal mines, comprising a cavity (1), characterized in that: A horizontal plate (2) is symmetrically fixedly connected to the left side of the interior of the cavity (1), a rotating groove (3) is provided at the right end of each horizontal plate (2), the interior of each rotating groove (3) is rotatably connected to a gear (4) via a rotating column, the outer side wall of each gear (4) is fixedly connected to a bubble-emitting rod (5), a sliding groove (6) is provided on the upper surface of the cavity (1), the outer side wall of each bubble-emitting rod (5) is slidably connected to the inner side of each sliding groove (6), a square opening (8) is provided on the right side of the cavity (1), the interior of each square opening (8) is fixedly connected to an extension cavity (9), the The extension cavity (9) is slidably connected to a slide plate (10), the left side of the upper surface of the slide plate (10) is fixedly connected to a rack (11), the rack (11) is connected to the gear (4), the left side of the cavity (1) is fixedly connected to a foam storage cavity (12), the front surface of the transverse plate (2) is fixedly connected to a connecting pipe (13), the right end of the connecting pipe (13) is fixedly connected to the foam outlet rod (5), the left end of the connecting pipe (13) passes through the interior of the foam storage cavity (12), and is fixedly connected to an extraction pump (14).

2. The intermittent foam dust suppression device for underground coal mines according to claim 1, characterized in that: The front surface of the cavity (1) is fixedly connected to an air outlet regulating cavity (15), the front surface of the air outlet regulating cavity (15) is fixedly connected to a motor (16), the front end of the output end of the motor (16) penetrates into the interior of the air outlet regulating cavity (15) and is fixedly connected to a cam (17), the interior of the air outlet regulating cavity (15) is symmetrically slidably connected to an air squeezing plate (18), and the opposite sides of the air squeezing plate (18) are fixedly connected to the interior of the air outlet regulating cavity (15) with springs (19).

3. The intermittent foam dust suppression device for underground coal mines according to claim 1, characterized in that: A shift rod (25) is fixedly connected to the outer wall of the rear end of the motor (16); a limit rod (20) is fixedly connected to the front surface of the air outlet cavity (15) on the left side of the motor (16); an air outlet pipe (21) is symmetrically fixedly connected to the outer wall of the air outlet regulating cavity (15); and one end of the air outlet pipe (21) away from the air outlet regulating cavity (15) is fixedly connected to the extension cavity (9).

4. The intermittent foam dust suppression device for underground coal mines according to claim 1, characterized in that: A timing signal generator (22) is fixedly connected to the left side of the front surface of the cavity (1), and the timing signal generator (22) is signal-connected to the motor (16) and the extraction pump (14).

5. The intermittent foam dust suppression device for underground coal mines according to claim 1, characterized in that: The top end of the foaming rod (5) is fixedly connected to a foaming head (7).

6. The intermittent foam dust suppression device for underground coal mines according to claim 1, characterized in that: A support plate (23) is fixedly connected to the lower surface of the cavity (1), and a plurality of self-locking universal wheels (24) are symmetrically fixedly connected to the lower surface of the support plate (23).

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