Dust falling equipment for coal mine excavation face

Abstract

The utility model discloses dust falling equipment for a coal mining face, which belongs to the technical field of dust falling in coal mining, and adopts the technical scheme that the dust falling equipment comprises a through pipe, the top and the bottom of the through pipe are respectively communicated with a dust collection frame, and a dust falling and wind dispelling assembly is arranged on the rear side of the through pipe. Circulating water on the bottom side of the interior of the dust removal box can achieve cyclic utilization of water resources, the water consumption is effectively reduced, water resource consumption and cost are reduced, meanwhile, a filter screen and a gravel purification layer in the dust removal box can effectively filter and purify dust-containing water flow, the circulating water can still keep good dust falling performance in long-term use, and the service life of the dust removal box is prolonged. In addition, due to the arrangement of the flow baffle, the airflow direction in the dust removal box can be optimized, dust can be promoted to be in better contact with spraying water mist generated by the spraying structure of the dust removal box, the dust settling efficiency is improved, and water and dust can be efficiently separated through the water filter net.

Description

Technical Field

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

[0002] In underground coal mines, the mining face is the front line of coal mining, where miners obtain coal. It is divided into the coal mining face and the tunneling face. The coal mining face is the core area, where coal seams are cut by coal mining machines and coal is transported by scraper conveyors. In longwall mining, the working face is long and wide, and miners work together as the coal mining machine cuts back and forth. The tunneling face is responsible for developing roadways to create conditions for coal mining. Tunneling machines break rocks or coal, and belt conveyors transport gangue and coal away, ensuring ventilation and transportation. Coal recovery is the process of extracting and transporting coal from the coal mining face. However, both coal mining and tunneling generate a lot of dust, which harms miners' health, easily leads to pneumoconiosis, and may also cause coal dust explosions and pollute the mining area environment. Therefore, dust suppression equipment is needed to control dust.

[0003] To eliminate the significant hazards posed by coal mine dust, all coal mines have adopted dust suppression measures such as water spraying. In addition to carrying out necessary dust suppression spraying at relevant locations in accordance with regulations, each mine must also install no less than two water curtains in the return air duct of the coal mining face. Most coal mines use a multi-point water curtain system, with multiple nozzles welded onto a single water pipe to form a water curtain through spraying. This method requires a large amount of water resources for dust suppression, resulting in a certain waste of water resources and significant economic expenditure for enterprises.

[0004] An existing patent (publication number: CN216367162U) discloses a dust suppression device for the return air roadway of a coal mine working face. This utility model uses a water pump to draw water from the inside of the water tank, which flows out through an inclined plate and forms a water curtain along the dust suppression net to remove and intercept dust in the air. The water curtain is collected by a collection device, filtered, and then returned to the water tank for recycling. This eliminates the need for excessive water waste and reduces the economic expenditure of enterprises.

[0005] To address the aforementioned problems, existing patents offer solutions. However, the large amount of dust generated during current coal mining processes poses a serious threat to miners' health and safety, and also pollutes the environment. Therefore, atomized water curtains are commonly used for dust suppression. However, this method has many drawbacks. On the one hand, it consumes a large amount of water, increasing water resource consumption and costs. On the other hand, the water generated by the atomized water curtain is difficult to effectively drain, easily leading to water accumulation. This not only affects normal safe underground operations but may also damage underground equipment, roadways, and other infrastructure, leading to a series of safety hazards such as equipment leakage and roadway collapse, thus bringing many adverse effects to coal mining operations.

[0006] Therefore, a dust suppression device for coal mine mining faces is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a dust suppression device for coal mine faces, which can solve the problem that the large amount of dust generated during coal mining poses a serious threat to the health and safety of miners and also pollutes the environment. For this reason, the dust suppression method of atomized water curtain is often used. However, this method has many drawbacks. On the one hand, it uses a large amount of water, which increases the consumption of water resources and costs. On the other hand, the water generated by the atomized water curtain is difficult to discharge effectively and is prone to water accumulation. This not only affects the normal safe operation underground, but may also damage underground equipment, roadways and other infrastructure, thus causing a series of safety hazards, such as equipment leakage and roadway collapse, which bring many adverse effects to coal mining operations.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a dust suppression device for coal mine mining faces, comprising a pipe, wherein a dust collection frame is connected to both the top and bottom of the pipe, a dust suppression and ventilation assembly is provided on the rear side of the pipe, a fan is connected to the rear side of the dust suppression and ventilation assembly, and a diversion duct is connected to the output end of the fan.

[0009] The dust suppression and ventilation assembly includes a dust collection box connected to the rear side of the duct. Circulating water is installed on the bottom side of the dust collection box, and a spray structure is installed on the top side of the dust collection box. A filter screen is bolted to the bottom side of the dust collection box, and a sand and gravel purification layer is installed at the bottom of the filter screen. Baffles are installed on the top side of the dust collection box and the top of the filter screen. A water filter screen is installed on the rear side of the dust collection box, and a drying structure is connected to the rear side of the dust collection box. The rear side of the drying structure is connected to the absorption end of the fan.

[0010] Preferably, the spray structure includes a water suction pipe connected to the bottom rear side of the dust collector, a water pump is bolted to the rear side of the dust collector, and the absorption end of the water pump is connected to the left side of the top of the water suction pipe.

[0011] Preferably, the output end of the water pump is connected to a water guide pipe, the front side of which penetrates the rear side of the dust collector and is located inside the dust collector.

[0012] Preferably, the bottom of the water guide pipe is connected to an atomizing spray head, which is located at the top of the baffle plate and the filter screen.

[0013] Preferably, the drying structure includes a connecting pipe connected to the rear side of the dust collector, the rear side of the connecting pipe being connected to a drying chamber, and the rear side of the drying chamber being connected to the absorption end of the fan.

[0014] Preferably, a constant temperature electric heating tube is provided on the front side of the inside of the drying oven, and an ultrafiltration screen is provided on the rear side of the inside of the drying oven.

[0015] Preferably, a protective net is embedded in the right side of the dust collection frame, and the protective net is hexagonal mesh.

[0016] Preferably, a partition is bolted to the bottom side inside the dust collection box, and the partition is located at the bottom of the sand and gravel purification layer.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application, by setting up a dust suppression and ventilation component, enables the recycling of water resources in the bottom of the dust collector, effectively reducing water consumption and costs. At the same time, the filter screen and sand purification layer inside the dust collector can effectively filter and purify the dust-laden water flow, ensuring that the circulating water maintains good dust suppression performance during long-term use and avoiding the impact of water quality deterioration on dust suppression effect. In addition, the baffle plate optimizes the airflow direction inside the dust collector, allowing dust to better contact with the spray mist generated by its spray structure, improving dust settling efficiency. The filter screen can efficiently separate water from dust, ensuring low humidity of the air entering the drying structure, thereby preventing water accumulation from affecting safe underground operations and damaging underground equipment, roadways, and other infrastructure. It effectively avoids safety hazards such as equipment leakage and roadway collapse, providing a safer and more stable working environment for coal mining.

[0019] 2. This application, by setting up a fan and a diversion duct, allows the fan to provide powerful suction, enabling the dust collection frame to efficiently draw dust from all parts of the mining face into the duct, ensuring that the dust can enter the dust suppression and ventilation components for treatment in a timely manner, thereby improving the dust suppression efficiency of the entire equipment. The diversion duct can then transport the dried hot air to where it is needed, not only realizing the reuse of energy, but also achieving green and environmentally friendly operations in the coal mining process. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the dust suppression equipment for coal mine mining faces according to this utility model;

[0021] Figure 2 This is a structural diagram of the dust suppression and ventilation component of this utility model;

[0022] Figure 3 This is a structural diagram of the spray structure of this utility model;

[0023] Figure 4 This is a structural diagram of the drying structure of this utility model;

[0024] Figure 5 This is a structural diagram of the dust collection frame of this utility model.

[0025] In the diagram: 1. Pipe; 2. Dust suppression and ventilation assembly; 21. Dust collection box; 22. Spray structure; 221. Water suction pipe; 222. Water pump; 223. Water guide pipe; 224. Atomizing spray head; 23. Filter screen; 24. Sand and gravel purification layer; 25. Baffle plate; 26. Water filter screen; 27. Drying structure; 271. Connecting pipe; 272. Drying box; 273. Constant temperature electric heating tube; 274. Ultrafiltration screen; 3. Fan; 4. Diversion duct; 5. Protective net; 6. Partition; 7. Dust collection frame. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A dust suppression device for coal mine face includes a pipe 1, with a dust collection frame 7 connected to the top and bottom of the pipe 1, a dust suppression and ventilation component 2 installed at the rear of the pipe 1, a fan 3 connected to the rear of the dust suppression and ventilation component 2, and a diversion duct 4 connected to the output end of the fan 3.

[0029] The dust collection and ventilation assembly 2 includes a dust collection box 21 connected to the rear side of the duct 1. Circulating water is provided on the bottom side of the dust collection box 21. A spray structure 22 is provided on the top side of the dust collection box 21. A filter screen 23 is bolted to the bottom side of the dust collection box 21. A sand and gravel purification layer 24 is provided at the bottom of the filter screen 23. Baffles 25 are provided on the top side of the dust collection box 21 and the top of the filter screen 23. A water filter screen 26 is provided on the rear side of the dust collection box 21. A drying structure 27 is connected to the rear side of the dust collection box 21. The rear side of the drying structure 27 is connected to the absorption end of the fan 3.

[0030] In this embodiment: By setting up the dust suppression and ventilation component 2, the dust-laden air is first sucked in by the dust collection frame 7 connected to the top and bottom of the pipe 1. With the help of the powerful suction of the fan 3, it quickly converges into the pipe 1 and then enters the dust collection box 21. At this time, the top spray structure 22 sprays out fine water mist, which mixes fully with the dust-laden airflow. The dust particles adhere to the water mist. At this time, the baffle 25 cleverly changes the airflow direction, allowing the dust and water mist to collide and adsorb more fully, further improving the settling efficiency. The filter screen 23 and the bottom sand and gravel purification layer 24 work together to filter the dust-laden water flow, intercepting dust impurities, ensuring excellent circulating water quality, and maintaining long-term stable dust suppression capability. Finally, the rear water filter screen 26 accurately separates water and dust to avoid excessive air humidity. Then, it enters the drying structure 27 for drying treatment. The dried air is then transported to the required place by the back-end diversion air pipe 4 of the fan 3. This not only ensures safety underground without water accumulation hazards, but also realizes the rational reuse of energy and creates good working conditions for coal mining.

[0031] Specifically, such as Figure 3 As shown, the spray structure 22 includes a water suction pipe 221 connected to the bottom rear side of the dust collection box 21. A water pump 222 is bolted to the rear side of the dust collection box 21. The absorption end of the water pump 222 is connected to the left side of the top of the water suction pipe 221.

[0032] Specifically, such as Figure 3 As shown, the output end of the water pump 222 is connected to a water guide pipe 223. The front side of the water guide pipe 223 passes through the rear side of the dust collector 21, and the front side of the water guide pipe 223 is located inside the dust collector 21.

[0033] Specifically, such as Figure 3 As shown, the bottom of the water pipe 223 is connected to an atomizing spray head 224, which is located at the top of the baffle plate 25 and the filter screen 23.

[0034] In this embodiment: by setting up a spray structure 22, a water pump 222 and a water suction pipe 221 draw circulating water from the bottom of the dust collection box 21, and deliver it to the atomizing spray head 224 located on top of the baffle plate 25 and the filter screen 23 via a water guide pipe 223. The atomizing spray head 224 atomizes the water into tiny particles, thereby increasing the contact area with the dust-laden air. When the dust-laden airflow passes by, the water mist can more efficiently adsorb dust particles and promote their settling. At the same time, since circulating water is used, water consumption is reduced and the sustainability of the dust removal process is improved.

[0035] Specifically, such as Figure 4 As shown, the drying structure 27 includes a connecting pipe 271 connected to the rear side of the dust collector 21, and a drying box 272 connected to the rear side of the connecting pipe 271. The rear side of the drying box 272 is connected to the absorption end of the fan 3.

[0036] Specifically, such as Figure 4As shown, a constant temperature electric heating tube 273 is provided on the front side of the inside of the drying oven 272, and an ultrafiltration screen 274 is provided on the rear side of the inside of the drying oven 272.

[0037] In this embodiment: by setting up a drying structure 27, the air treated by the water filter 26 is introduced into the drying box 272 through the connecting pipe 271. The constant temperature electric heating tube 273 on the front side of the drying box 272 heats the air, accelerates the evaporation of moisture, and reduces the air humidity. The ultrafiltration screen 274 on the rear side further filters out any small particles that may remain in the air, ensuring that the air entering the blower 3 is clean and dry. This not only avoids the impact of water accumulation on underground safe operation, but also provides dry air conditions for the subsequent reuse of hot air.

[0038] Specifically, such as Figure 5 As shown, a protective net 5 is embedded in the right side of the vacuum cleaner frame 7. The protective net 5 is hexagonal grid in shape.

[0039] Specifically, such as Figure 3 As shown, a partition 6 is bolted to the bottom side inside the dust collection box 21, and the partition 6 is located at the bottom of the sand and gravel purification layer 24.

[0040] In this embodiment: by setting up a protective net 5 and a partition 6, the hexagonal mesh protective net 5 embedded in the right side of the dust collection frame 7 can effectively block larger particles of debris from entering the pipe 1 and the dust collection frame 7, preventing them from clogging the equipment or damaging the internal structure. Meanwhile, the partition 6 on the bottom side of the dust collection box 21 separates the sand and gravel purification layer 24 from the bottom space, which helps the sand and gravel purification layer 24 to play a stable filtering role and ensures the stable operation of the entire dust collection equipment.

[0041] Working Principle: During the use of dust suppression equipment in coal mine working faces, dust-laden air is first drawn in by the suction frame 7, which connects the top and bottom of the pipe 1. This process, aided by the powerful suction of the fan 3, allows the dust-laden air to quickly converge into the pipe 1. Subsequently, the dust-laden air enters the dust collection box 21. At this time, the water pump 222, bolted to the rear of the dust collection box 21, draws circulating water through the suction pipe 221 and delivers it via the guide pipe 223 to the atomizing spray head 224 located at the top of the baffle plate 25 and the filter screen 23. The atomizing spray head 224 atomizes the water into tiny particles, increasing the contact area with the dust-laden air. When the dust-laden airflow passes through, the water mist can more efficiently adsorb dust particles, promoting their settling. The baffle plate 25 cleverly changes the airflow direction, allowing the dust to collide and adsorb with the water mist more fully, further improving the settling efficiency. The filter screen 23 and the bottom... The sand and gravel purification layer 24 filters the dust-laden water flow, intercepting dust and impurities to ensure excellent circulating water quality and maintain long-term stable dust reduction capabilities. Next, the rear water filter 26 precisely separates water and dust to prevent excessive air humidity. The treated air then enters the drying chamber 272. The connecting pipe 271 guides the air treated by the water filter 26 into the drying chamber 272. The constant temperature electric heating tube 273 at the front of the drying chamber 272 heats the air, accelerating moisture evaporation and reducing air humidity. The rear ultrafiltration screen 274 further filters any small particles that may remain in the air, ensuring that the air entering the blower 3 is clean and dry. Finally, the dried air is transported to the required location by the rear branch air pipe 4 of the blower 3. This ensures safety underground without water accumulation hazards and achieves rational energy reuse, creating favorable working conditions for coal mining.

[0042] 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 working faces, comprising a pipe (1), characterized in that: The top and bottom of the pipe (1) are connected to a dust collection frame (7), a dust suppression and ventilation assembly (2) is provided on the rear side of the pipe (1), a fan (3) is connected to the rear side of the dust suppression and ventilation assembly (2), and a diversion duct (4) is connected to the output end of the fan (3). The dust removal and ventilation assembly (2) includes a dust collection box (21) connected to the rear side of the pipe (1). The bottom side of the dust collection box (21) is provided with circulating water. The top side of the dust collection box (21) is provided with a spray structure (22). The bottom side of the dust collection box (21) is bolted with a filter screen (23). The bottom of the filter screen (23) is provided with a sand and gravel purification layer (24). The top side of the dust collection box (21) and the top of the filter screen (23) are both provided with baffles (25). The rear side of the dust collection box (21) is provided with a water filter screen (26). The rear side of the dust collection box (21) is connected with a drying structure (27). The rear side of the drying structure (27) is connected with the absorption end of the fan (3).

2. The dust suppression equipment for coal mine faces according to claim 1, characterized in that: The spray structure (22) includes a water suction pipe (221) connected to the bottom of the rear side of the dust collector (21). A water pump (222) is bolted to the rear side of the dust collector (21). The absorption end of the water pump (222) is connected to the left side of the top of the water suction pipe (221).

3. The dust suppression equipment for coal mine faces according to claim 2, characterized in that: The output end of the water pump (222) is connected to a water guide pipe (223), the front side of the water guide pipe (223) penetrates the rear side of the dust collector (21), and the front side of the water guide pipe (223) is located inside the dust collector (21).

4. The dust suppression equipment for coal mine faces according to claim 3, characterized in that: The bottom of the water guide pipe (223) is connected to an atomizing spray head (224), which is located at the top of the baffle plate (25) and the filter screen (23).

5. A dust suppression device for coal mine faces according to claim 1, characterized in that: The drying structure (27) includes a connecting pipe (271) connected to the rear side of the dust collector (21), and the rear side of the connecting pipe (271) is connected to a drying box (272), and the rear side of the drying box (272) is connected to the absorption end of the fan (3).

6. A dust suppression device for coal mine faces according to claim 5, characterized in that: A constant temperature electric heating tube (273) is provided on the front side of the inside of the drying oven (272), and an ultrafiltration screen (274) is provided on the rear side of the inside of the drying oven (272).

7. A dust suppression device for coal mine faces according to claim 1, characterized in that: The right side of the vacuum frame (7) is embedded with a protective net (5), which is hexagonal mesh.

8. A dust suppression device for coal mine faces according to claim 1, characterized in that: A partition (6) is bolted to the bottom side inside the dust collection box (21), and the partition (6) is located at the bottom of the sand and gravel purification layer (24).

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