A dust suppression device for coal mining

Abstract

The utility model discloses a kind of coal mine excavation dust suppression devices, belong to coal mine excavation technical field, its technical scheme main points include two bottom plates, dust suppression mechanism is arranged between the top of two bottom plates, the both sides of bottom plate top are all set to limiting mechanism, push rod is arranged between the top of two bottom plates;The dust suppression mechanism includes ring pipe, several atomizing nozzles and water delivery pipe, the bottom of ring pipe is fixedly connected with the top of bottom plate, solve the single direction water spraying structure of part of existing coal mine excavation dust suppression, because it is difficult to cope with the four high-speed diffusion characteristics of coal dust and underground air flow interference, cannot form full-encircling trapping area, instead of easy to push dust to uncovered area by water mist airflow, cause the problem of high dust escape rate, poor respirable dust removal effect, not only cannot effectively control on-site dust pollution, also influence the health and safety production of operating personnel.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, and in particular to a dust suppression device for coal mining. Background Technology

[0002] The coal mine dust suppression device is a dust control and purification equipment system designed specifically for the entire coal mining process. Its core function is to reduce the dust generated during coal mining, crushing, and transportation through technologies such as source suppression, process capture, and end-of-pipe purification, thereby reducing the harm of dust diffusion to the health of underground workers, equipment operation, and safe production.

[0003] The existing water spray structures for dust suppression in some coal mines often adopt a single-direction spraying design. Since the coal dust generated during coal mining spreads rapidly in all directions and is affected by underground airflow, the water mist sprayed in a single direction is difficult to form a fully enclosed capture area. Some dust is easily pushed to uncovered areas by the airflow generated by the water mist, resulting in a high dust escape rate and a lower respirable dust removal rate. This cannot effectively solve the dust pollution problem at the coal mine site and affects the health and safety of workers.

[0004] Therefore, a dust suppression device for coal mine excavation is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a dust suppression device for coal mine excavation, which can solve the problem that the existing single-direction water spray structure for dust suppression in some coal mines is difficult to cope with the high-speed diffusion characteristics of coal dust from all sides and the interference of underground airflow. It cannot form a fully enclosed capture area, and instead, the water mist airflow easily pushes the dust to the uncovered area, resulting in a high dust escape rate and poor respirable dust removal effect. This not only fails to effectively control on-site dust pollution, but also affects the health and safety of workers.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dust suppression device for coal mine excavation, comprising two base plates, a dust suppression mechanism disposed between the tops of the two base plates, a limiting mechanism disposed on both sides of the top of the base plates, and a push rod disposed between the tops of the two base plates; the dust suppression mechanism comprises a ring pipe, a plurality of atomizing nozzles and a water supply pipe, the bottom of the ring pipe being fixedly connected to the top of the base plates, the rear side of the atomizing nozzles being fixedly connected to the front side of the ring pipe, the right side of the water supply pipe being fixedly connected to the left side of the ring pipe, and the atomizing nozzles being inclined toward the center of the ring pipe.

[0007] Preferably, a reinforcing rib is fixedly connected to the rear side of the ring tube, and the cross-section of the reinforcing rib is trapezoidal.

[0008] Preferably, a support plate is fixedly connected to the rear side of the top of the base plate, and the front side of the support plate is fixedly connected to the rear side of the ring pipe.

[0009] Preferably, an arc-shaped clip is fixedly connected to the rear side of the support plate, and the push rod is movably engaged inside the arc-shaped clip.

[0010] Preferably, limit blocks are fixedly connected to both sides of the push rod, and the surface of the limit blocks is in contact with the surface of the arc-shaped card.

[0011] Preferably, the limiting mechanism includes a lifting rod, a pedal, and a limiting cone, wherein the bottom of the lifting rod is fixedly connected to the top of the pedal, and the top of the limiting cone is fixedly connected to the bottom of the pedal.

[0012] Preferably, the top of the base plate has a limiting hole for use with a limiting cone, the limiting cone is movably inserted into the limiting hole, the top of the pedal is fixedly connected with a rubber anti-slip block, the number of rubber anti-slip blocks is several and evenly distributed on the top of the pedal, and the front and rear sides of the top of the base plate are fixedly connected with limiting cylinders.

[0013] Preferably, rollers are rotatably connected to the front and rear sides of the bottom of the base plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This application sets up a dust suppression mechanism, which is connected to an external pressurized water source pipeline through the left end of the water supply pipe. High-pressure water flows into the ring pipe through the water supply pipe. The ring pipe is reinforced by the fixed connection between the bottom and the base plate, the trapezoidal cross-section reinforcing ribs on the rear side, and the support plate on the top of the base plate to ensure the stability of the installation. After the high-pressure water is evenly distributed in the ring pipe, it is sprayed out through several atomizing nozzles that are inclined towards the center of the ring pipe to form a ring-shaped water mist area, which accurately covers the core location of coal mine dust generation, effectively avoids the dust escape problem caused by spraying in one direction, and significantly improves the dust suppression effect.

[0016] 2. This application incorporates a limiting mechanism consisting of a lifting rod, a pedal, and a limiting cone. The lifting rod is fixed to the top of the pedal, and the limiting cone is fixed to the bottom of the pedal. When the device moves, the rollers at the bottom of the base plate, in conjunction with the push rod that is arc-shapedly engaged on the rear side of the support plate, facilitate the overall movement of the device. The push rod is detachable to avoid interfering with excavation operations. After the device is in place, the operator lifts the pedal with the lifting rod, aligning the limiting cone with the limiting hole in the base plate. By stepping on the evenly distributed rubber anti-slip blocks on the top of the pedal, the limiting cone is inserted into the ground to complete the fixation. The limiting cylinder at the top of the base plate serves as a guide for the pedal's lifting and lowering. During movement, the limiting cone can be stored inside the limiting cylinder to avoid affecting the smoothness of movement, thus achieving an efficient switch between convenient movement and stable fixation of the device. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the coal mine dust suppression device of this utility model;

[0018] Figure 2This is a three-dimensional connection diagram of the dust suppression mechanism in this utility model;

[0019] Figure 3 This is a three-dimensional connection diagram of the base plate and the support plate in this utility model;

[0020] Figure 4 This is a three-dimensional connection diagram of the limiting mechanism in this utility model;

[0021] Figure 5 This is a three-dimensional connection diagram of the push rod and the limiting block in this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the rear side of the central ring tube in this utility model.

[0023] In the diagram, 1. Base plate; 2. Dust suppression mechanism; 201. Ring pipe; 202. Atomizing nozzle; 203. Water supply pipe; 3. Push rod; 4. Limiting mechanism; 401. Lifting rod; 402. Pedal; 403. Limiting cone; 5. Support plate; 6. Arc-shaped clip; 7. Limiting hole; 8. Roller; 9. Limiting cylinder; 10. Rubber anti-slip block; 11. Limiting block; 12. Reinforcing rib. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-6 The present invention provides the following technical solution:

[0026] A dust suppression device for coal mine excavation includes two base plates 1, a dust suppression mechanism 2 is provided between the tops of the two base plates 1, a limit mechanism 4 is provided on both sides of the top of the base plates 1, and a push rod 3 is provided between the tops of the two base plates 1; the dust suppression mechanism 2 includes a ring pipe 201, a plurality of atomizing nozzles 202 and a water supply pipe 203, the bottom of the ring pipe 201 is fixedly connected to the top of the base plate 1, the rear side of the atomizing nozzles 202 is fixedly connected to the front side of the ring pipe 201, the right side of the water supply pipe 203 is fixedly connected to the left side of the ring pipe 201, and the atomizing nozzles 202 are inclined toward the center of the ring pipe 201.

[0027] In this embodiment: By connecting the left end of the water supply pipe 203 of the dust suppression mechanism 2 to an external pressurized water source pipe, high-pressure water flows into the ring pipe 201 through the water supply pipe 203. The ring pipe 201 is reinforced and improved in stability by fixing the bottom to the base plate 1, the rear trapezoidal reinforcing rib 12, and the support plate 5. The high-pressure external water source is sprayed out through several atomizing nozzles 202 inclined towards the center on the front side of the ring pipe 201, forming a ring-shaped surrounding water mist, which accurately covers the core location of coal mine dust generation, preventing dust from escaping. The push rod 3 is movable and locked. The device is attached to the arc-shaped clip 6 on the rear side of the support plate 5 and the limiting blocks 11 on both sides limit its movement. With the help of the bottom rollers 8 of the base plate 1, the entire device can be moved easily. When not in use, it can be disassembled to avoid interfering with coal mining. After the device is in place, the operator lifts the pedal 402 by lifting rod 401, so that the limiting cone 403 is aligned with the limiting hole 7 of the base plate 1. Stepping on the top rubber anti-slip block 10 inserts the limiting cone 403 into the ground and fixes it. When moving, the limiting cone 403 can be stored in the limiting cylinder 9 of the base plate 1 to prevent it from affecting the movement and ensure the stability of dust suppression operation.

[0028] Specifically, such as Figure 6 As shown, a reinforcing rib 12 is fixedly connected to the rear side of the ring pipe 201, and the cross section of the reinforcing rib 12 is trapezoidal.

[0029] Specifically, such as Figure 1 and Figure 3 As shown, a support plate 5 is fixedly connected to the rear side of the top of the base plate 1, and the front side of the support plate 5 is fixedly connected to the rear side of the ring pipe 201.

[0030] Specifically, such as Figure 3 and Figure 5 As shown, an arc-shaped clip 6 is fixedly connected to the rear side of the support plate 5, and the push rod 3 is movably clipped into the interior of the arc-shaped clip 6.

[0031] Specifically, such as Figure 3 and Figure 5 As shown, limit blocks 11 are fixedly connected to both sides of the push rod 3, and the surface of the limit block 11 is in contact with the surface of the arc-shaped card 6.

[0032] In this embodiment: the trapezoidal cross-section reinforcing rib 12 on the rear side of the ring pipe 201 and the support plate 5 on the top rear side of the bottom plate 1 form a double reinforcement structure, which greatly improves the installation stability of the ring pipe 201 and avoids displacement of the ring pipe 201 caused by high-pressure water spraying or vibration during downhole operations; the arc-shaped clip 6 on the rear side of the support plate 5 is movably engaged with the push rod 3, and together with the limiting blocks 11 on both sides of the push rod 3, it achieves precise positioning, which not only facilitates the movement of the device by pushing the push rod 3, but also allows for quick disassembly of the push rod 3, avoiding interference with the excavation operations within the area surrounded by the ring pipe 201, and is suitable for complex downhole operation scenarios.

[0033] Specifically, such as Figure 4As shown, the limiting mechanism 4 includes a lifting rod 401, a pedal 402, and a limiting cone 403. The bottom of the lifting rod 401 is fixedly connected to the top of the pedal 402, and the top of the limiting cone 403 is fixedly connected to the bottom of the pedal 402.

[0034] Specifically, such as Figure 3 and Figure 4 As shown, the top of the base plate 1 is provided with a limiting hole 7 that is used in conjunction with the limiting cone 403. The limiting cone 403 is movably inserted into the limiting hole 7. The top of the pedal 402 is fixedly connected with a rubber anti-slip block 10. There are several rubber anti-slip blocks 10 and they are evenly distributed on the top of the pedal 402. The front and rear sides of the top of the base plate 1 are fixedly connected with limiting cylinders 9.

[0035] Specifically, such as Figure 1 As shown, rollers 8 are rotatably connected to the front and rear sides of the bottom of the base plate 1.

[0036] In this embodiment, the limiting mechanism 4 is integrated with the lifting rod 401, the pedal 402 and the limiting cone 403. With the limiting hole 7 on the base plate 1, stepping on the pedal 402 will insert the limiting cone 403 into the ground to fix the entire device. The operation is convenient and efficient. Several evenly distributed rubber anti-slip blocks 10 on the top of the pedal 402 enhance the stepping friction and prevent slipping. The rollers 8 at the bottom of the base plate 1 facilitate the flexible movement of the entire device. When moving, the limiting cone 403 can be stored in the limiting cylinder 9 to avoid affecting the smoothness of movement.

[0037] Working principle: By connecting the left end of the water supply pipe 203 in the dust suppression mechanism 2 to an external pressurized water source pipe, the high-pressure water supplied by the external pressurized water source flows into the ring pipe 201 through the water supply pipe 203. Since the bottom of the ring pipe 201 is fixedly connected to the top of the base plate 1, and the rear side of the ring pipe 201 is reinforced by a trapezoidal reinforcing rib 12 to enhance structural stability, and the support plate 5 on the rear side of the top of the base plate 1 is fixedly connected to the rear side of the ring pipe 201, the installation firmness of the ring pipe 201 is further improved. The high-pressure water is evenly distributed in the ring pipe 201. The water mist is sprayed from several front-mounted, fixedly connected atomizing nozzles 202. These nozzles are all inclined towards the center of the ring pipe 201, allowing the water mist to form a ring-shaped, encircling spray area. This precisely covers the core areas where dust is generated during coal mining, effectively preventing dust escape caused by spraying in one direction and significantly improving dust suppression. The push rod 3 is movably engaged inside the arc-shaped clip 6 on the rear side of the support plate 5, and the limiting blocks 11 on both sides of the push rod 3 contact the surface of the arc-shaped clip 6 to achieve limiting. Pushing the push rod 3, in conjunction with the rollers 8 rotating on the front and rear sides of the bottom of the base plate 1, allows the entire device to be easily moved to the designated working position. When excavation work needs to be carried out within the area surrounded by the ring pipe 201, the push rod 3 can be directly removed from the arc-shaped clip 6 to complete the disassembly, avoiding interference with the excavation work. After moving the entire device to the required position, the operator lifts the pedal 402 through the lifting rod 401 in the limiting mechanism 4, aligning the limiting cone 403 at the bottom of the pedal 402 with the limiting hole 7 opened at the top of the base plate 1. Then, the operator steps on several rubber anti-slip blocks 10 evenly distributed on the top of the pedal 402, using the stepping pressure to push the limiting cone 403 through the limiting hole 7 and insert it into the ground, thereby achieving a stable position fixation of the base plate 1 and the ring pipe 201, preventing the device from shifting due to the underground environment or water flow impact during dust suppression operations, ensuring the accuracy of the annular water mist coverage and the stability of the dust suppression effect. During the movement of the base plate 1, the limiting cone 403 can be inserted into the limiting cylinder 9 for storage, avoiding affecting the movement of the base plate 1.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dust suppression device for coal mine excavation, comprising two base plates (1), characterized in that: A dust suppression mechanism (2) is provided between the tops of the two base plates (1). Limiting mechanisms (4) are provided on both sides of the top of the base plate (1). A push rod (3) is provided between the tops of the two base plates (1). The dust suppression mechanism (2) includes a ring pipe (201), several atomizing nozzles (202) and a water supply pipe (203). The bottom of the ring pipe (201) is fixedly connected to the top of the base plate (1). The rear side of the atomizing nozzle (202) is fixedly connected to the front side of the ring pipe (201). The right side of the water supply pipe (203) is fixedly connected to the left side of the ring pipe (201). The atomizing nozzle (202) is inclined towards the center of the ring pipe (201).

2. The dust suppression device for coal mine excavation according to claim 1, characterized in that: The rear side of the ring tube (201) is fixedly connected with a reinforcing rib (12), and the cross section of the reinforcing rib (12) is trapezoidal.

3. The dust suppression device for coal mine excavation according to claim 1, characterized in that: A support plate (5) is fixedly connected to the rear side of the top of the base plate (1), and the front side of the support plate (5) is fixedly connected to the rear side of the ring pipe (201).

4. A dust suppression device for coal mine excavation according to claim 3, characterized in that: An arc-shaped clip (6) is fixedly connected to the rear side of the support plate (5), and the push rod (3) is movably clipped into the inside of the arc-shaped clip (6).

5. A dust suppression device for coal mine excavation according to claim 4, characterized in that: Both sides of the push rod (3) are fixedly connected to limit blocks (11), and the surface of the limit block (11) is in contact with the surface of the arc-shaped card (6).

6. A dust suppression device for coal mine excavation according to claim 1, characterized in that: The limiting mechanism (4) includes a lifting rod (401), a pedal (402) and a limiting cone (403). The bottom of the lifting rod (401) is fixedly connected to the top of the pedal (402), and the top of the limiting cone (403) is fixedly connected to the bottom of the pedal (402).

7. A dust suppression device for coal mine excavation according to claim 6, characterized in that: The top of the base plate (1) is provided with a limiting hole (7) for use with the limiting cone (403). The limiting cone (403) is movably inserted into the limiting hole (7). The top of the pedal (402) is fixedly connected with a rubber anti-slip block (10). There are several rubber anti-slip blocks (10) evenly distributed on the top of the pedal (402). The front and rear sides of the top of the base plate (1) are fixedly connected with limiting cylinders (9).

8. A dust suppression device for coal mine excavation according to claim 1, characterized in that: Rollers (8) are rotatably connected to the front and rear sides of the bottom of the base plate (1).

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