A high-pressure spray high-efficiency dust removal device in a coal mine underground

Abstract

The utility model relates to the technical field of coal mine underground, specifically relates to a coal mine underground high pressure spray high -efficient dust collector, both sides of the top of frame body all are fixedly connected with fixed plate, and all are embedded with connecting pipe on two fixed plates, and the side of two connecting pipes all has a plurality of pneumatic telescopic link, all the pneumatic telescopic link one end all with the lateral wall between the top frame fixedly connected, the side of two connecting pipes all with the connecting port place of air pump intercommunication, the top frame top slidingly connected with the spray board, and the top frame top side fixedly connected with the connecting plate, the side of connecting plate is fixedly connected with the cylinder through bolt, and the output shaft of cylinder penetrates connecting plate. Effectively solved the problem of the fixed position of the spray board, the limited spray range in the prior art, significantly expanded the coverage area of single spray operation, avoided the incomplete dust removal phenomenon caused by the spray blind area, improved the spray efficiency and uniformity.

Description

Technical Field

[0001] This utility model relates to the field of underground coal mining technology, and in particular to a high-pressure spray high-efficiency dust removal device for underground coal mines. Background Technology

[0002] Dust suppression spraying in coal mines is a crucial aspect of mine safety, primarily used to suppress the large amounts of suspended coal dust generated during coal mining and transportation in areas such as working faces and transport roadways. This coal dust not only pollutes the working environment and harms miners' respiratory health, but more seriously, it poses an explosion risk at certain concentrations, directly threatening mine safety. Therefore, using high-pressure spraying to allow fine water mist to collide, adsorb, agglomerate, and settle with dust particles has become a widely adopted, efficient, and economical dust control method in coal mines.

[0003] Utility model patent CN214330676U discloses a high-efficiency automatic dust suppression spray device for metal mining, including a support pipe. One end of the support pipe is threadedly connected to a connecting bend, and the other end of the connecting bend is threadedly connected to a fixing guide tube. An annular first connecting sleeve is fitted over the fixing guide tube, and the other end of the first connecting sleeve is threadedly connected to an annular second connecting sleeve. The second connecting sleeve contains a mounting base fixing tube, and the lower end of the mounting base fixing tube has several mounting seats. The lower end of each mounting seat has a nozzle fixing sleeve, and the nozzle fixing sleeve contains a fixing post. A nozzle is threadedly mounted on the lower end of the nozzle fixing sleeve. This high-efficiency automatic dust suppression spray device for metal mining has a double spray structure on its outer wall, which can spray in the direction of heavier dust, improving the dust suppression effect. The device also allows for easy adjustment of the spray angle, facilitating quick setup by the user.

[0004] In existing technologies, it is inconvenient to adjust the position of the spray plate when performing dust suppression spraying in mines, which greatly reduces the spraying efficiency and the spraying range, affecting the working environment in mines. Therefore, in view of the many shortcomings of existing technologies, we urgently need an innovative high-pressure spray high-efficiency dust suppression device to solve these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a high-pressure spray high-efficiency dust removal device for underground coal mines, which solves the problem that in the prior art, it is not convenient to adjust the position of the spray plate when carrying out underground spray dust removal, which greatly reduces the spray efficiency of the spray plate and the spray range, thus affecting the working environment in the mine.

[0006] To achieve the above objectives, this utility model provides a high-pressure spray high-efficiency dust removal device for underground coal mines, including a frame, a top frame slidably connected to the top of the frame, and an air pump fixedly connected to one side of the outer wall of the frame by bolts.

[0007] The top two sides of the frame are fixedly connected to fixed plates, and connecting pipes are embedded in both fixed plates. Several pneumatic telescopic rods are connected to one side of each connecting pipe. One end of each pneumatic telescopic rod is fixedly connected to the side wall of the top frame. One side of each connecting pipe is connected to the connection port of the air pump. A spray plate is slidably connected to the top of the top frame, and a connecting plate is fixedly connected to one side of the top of the top frame. A cylinder is fixedly connected to one side of the connecting plate by bolts, and the output shaft of the cylinder passes through the connecting plate and is fixedly connected to the bottom side of the spray plate. A pump body is fixedly connected to one side of the outer wall of the frame by bolts. A hose is connected to the outlet of the pump body, and one end of the hose is connected to one side of the spray plate.

[0008] The top two sides of the frame are fixedly connected to side plates, and the bottom two sides of the top frame are fixedly connected to sliding blocks. The two sliding blocks are slidably connected to the two side plates through sliding grooves.

[0009] The bottom of the spray plate is fixedly connected to a slider, and the slider is slidably connected to the top of the top frame through a groove.

[0010] The air pump has two pipes connected to it, and one end of each pipe is connected to one side of the two connecting pipes.

[0011] Each of the two pipes has a control valve installed at one end.

[0012] Wheels are fixedly connected to the four corners at the bottom of the frame.

[0013] This utility model discloses a high-pressure spray dust suppression device for underground coal mines. Through a pneumatic telescopic rod, connecting pipe, and air pump working together, the top frame can automatically reciprocate at the top, thereby driving the spray plate to move laterally for spraying. This effectively solves the problems of fixed spray plate position and limited spray range in existing technologies, significantly expanding the coverage area of ​​a single spray operation and avoiding incomplete dust suppression due to spray blind spots, thus improving spray efficiency and uniformity. Simultaneously, by incorporating a cylinder-driven spray plate adjustment mechanism on the top frame, dynamic adjustment of the spray plate's angle and height is achieved. This overcomes the shortcomings of traditional devices that can only manually adjust the nozzle angle without overall displacement or swing, allowing the device to respond flexibly to changes in the actual dust-generating location underground, improving the control of dynamic dust. The device boasts excellent source tracking and adaptability. Furthermore, the sliding connection between the spray plate and the top frame, coupled with water supply via hoses, ensures the continuity and sealing of the water path during the spray plate's movement and oscillation. This avoids leakage or structural damage caused by frequent disassembly or rigid connections, improving equipment stability and lifespan. The entire device, through the coordinated control of air pumps and cylinders, achieves automatic displacement and attitude adjustment during spraying, reducing the frequency of manual intervention and lowering the workload and safety risks for operators in high-dust, high-humidity environments. It meets the actual needs of coal mines for efficient, continuous, and intelligent dust removal operations, comprehensively improving mine dust control levels, helping to improve underground air quality, reduce coal dust explosion hazards, and protect miners' occupational health and mine safety. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the main structure of an embodiment of this utility model.

[0016] Figure 2 This is a top view of an embodiment of the present invention.

[0017] Figure 3 This is a side view structural diagram of an embodiment of the present utility model.

[0018] Figure 4 This is a bottom view of the structure of an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the top frame structure of an embodiment of this utility model.

[0020] 1. Frame; 2. Top frame; 3. Spray plate; 4. Slider; 5. Slide groove; 6. Hose; 7. Cylinder; 8. Connecting plate; 9. Sliding block; 10. Sliding groove; 11. Fixing plate; 12. Connecting pipe; 13. Pneumatic telescopic rod; 14. Pipe body; 15. Side plate; 16. Air pump; 17. Control valve; 18. Wheel body; 19. Pump body. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] Please see Figures 1-5 A high-pressure spray dust removal device for underground coal mines includes a frame 1, a top frame 2 slidably connected to the top of the frame 1, and an air pump 16 fixedly connected to one side of the outer wall of the frame 1 by bolts; fixing plates 11 are fixedly connected to both sides of the top of the frame 1, and connecting pipes 12 are embedded in both fixing plates 11, and several pneumatic telescopic rods 13 are connected to one side of each connecting pipe 12, wherein one end of each pneumatic telescopic rod 13 is fixedly connected to the side wall of the top frame 2, and the two connecting pipes 1... One side of the top frame 2 is connected to the connection port of the air pump 16. The top of the top frame 2 is slidably connected to the spray plate 3, and the top side of the top frame 2 is fixedly connected to the connecting plate 8. The side of the connecting plate 8 is fixedly connected to the cylinder 7 by bolts, and the output shaft of the cylinder 7 passes through the connecting plate 8. The output shaft of the cylinder 7 is fixedly connected to the bottom side of the spray plate 3. The outer wall of the frame 1 is fixedly connected to the pump body 19 by bolts. The outlet of the pump body 19 is connected to the hose 6, and one end of the hose 6 is connected to one side of the spray plate 3.

[0023] When using this high-pressure spray dust suppression device in a coal mine, the entire device is first transported to the work area requiring spray dust suppression, such as near key dust-generating points in the mining face or transport roadway, using a mobile base or fixed support. Ensure the frame 1 is placed stably and in a suitable position. Then, the pump 19 is started. The pump 19 is a high-pressure pump that draws in high-pressure water through an external pipeline and delivers the water through a hose 6 to the water inlet on one side of the spray plate 3. The water then flows through the internal distribution channel of the spray plate 3 and is sprayed out from multiple nozzles, forming a fine high-pressure water mist, achieving initial capture and settling of suspended coal dust in the air. Simultaneously, to improve the spray coverage and uniformity, the air pump 16 is started. The compressed air generated by the air pump 16 is connected to connecting pipes 12 located on both sides of the frame 1 through pipelines. The connecting pipes 12 transmit the airflow to multiple pneumatic telescopic rods 13 installed on them. By controlling the alternating air supply and exhaust of the two connecting pipes 12, the overall dust suppression effect is achieved. The pneumatic telescopic rods 13 on both sides perform alternating extension and retraction. Since the extension and retraction ends of all pneumatic telescopic rods 13 are fixedly connected to the side wall of the top frame 2, the top frame 2 can reciprocate linearly in the horizontal direction at the top of the frame 1, thereby driving the spray plate 3, which is slidably connected to it, to move back and forth synchronously, realizing dynamic scanning spraying of water mist in the horizontal space. In addition, when it is necessary to adjust the spray height or coverage angle, the cylinder 7 fixed to one side of the top of the top frame 2 can be activated. The output shaft of the cylinder 7 passes through the connecting plate 8 and is fixedly connected to the bottom side of the spray plate 3. By controlling the extension and retraction of the cylinder 7, the spray plate 3 can be pushed to swing or move up and down around its sliding connection point with the top frame 2 at a certain angle, thereby changing the spray direction and coverage area, and achieving precise coverage of dust sources at different heights or angles. Throughout the process, the spray plate 3 can move laterally with the top frame 2 as a whole, and can also adjust its posture independently through the cylinder 7, which significantly enhances the flexibility and adaptability of the spray.

[0024] Furthermore, side plates 15 are fixedly connected to both sides of the top of the frame 1, and sliding blocks 9 are fixedly connected to both sides of the bottom of the top frame 2. The two sliding blocks 9 are slidably connected to the two side plates 15 through sliding grooves 10 respectively. When the top frame 2 moves back and forth along the top of the frame 1, the sliding blocks 9 slide synchronously in the sliding grooves 10 inside the side plates 15. This structure provides stable guiding support for the horizontal movement of the top frame 2, avoiding the top frame 2 from jamming or shifting due to the off-center load or shaking caused by the push and pull of the pneumatic telescopic rod 13. This improves the stability of the movement of the top frame 2 and the repeatability of the positioning accuracy, thereby ensuring the continuity and uniformity of the spray plate 3 in the horizontal scanning spray process and effectively preventing the problem of spray discontinuity or uneven overlap.

[0025] Furthermore, a slider 4 is fixedly connected to the bottom of the spray plate 3, and the slider 4 is slidably connected to the top of the top frame 2 through the slide groove 5. The slider 4 at the bottom of the spray plate 3 is embedded in the slide groove 5 at the top of the top frame 2 and can slide along it. When the cylinder 7 drives the spray plate 3 to swing or adjust its position, this structure provides additional linear support and motion guidance for the spray plate 3, enhances the structural stability of the spray plate 3 during dynamic adjustment, reduces the vibration or deformation of the spray plate 3 caused by the cantilever force, ensures that the nozzle can maintain a stable spray direction and atomization effect under different postures, and improves the adaptability of the device to complex dust distribution areas.

[0026] Furthermore, the air pump 16 is connected to two pipes 14, and one end of each pipe 14 is connected to one side of each of the two connecting pipes 12. The compressed air output by the air pump 16 is delivered to the connecting pipes 12 on both sides of the frame 1 through the two independent pipes 14. This achieves symmetrical distribution and independent air supply of the airflow channels, effectively ensuring the pressure balance of the pneumatic telescopic rods 13 on both sides during the air intake and exhaust process. It avoids the problem of asynchronous or skewed movement of the top frame 2 caused by asymmetrical air paths, improves the coordination and reliability of reciprocating motion, and thus ensures that the spray coverage of the spray plate 3 is more uniform and consistent throughout the entire scanning path.

[0027] Furthermore, each of the two pipe bodies 14 is equipped with a control valve 17 at one end, which can independently adjust the airflow and on / off status of the airflow to the connecting pipes 12 on both sides. Operators can flexibly control the extension rhythm and stroke of the pneumatic telescopic rod 13 according to the actual spray range requirements or the space limitations of the tunnel, so as to achieve precise control of the moving speed and reciprocating frequency of the top frame 2, which enhances the on-site adaptability and operational flexibility of the device. At the same time, in the event of equipment maintenance or unilateral failure, the corresponding control valve 17 can be closed to achieve partial shutdown for maintenance without affecting the overall system's operational safety.

[0028] Furthermore, wheels 18 are fixedly connected to the four corners at the bottom of the frame 1, giving the entire dust removal device good mobility. Operators can easily push the device to move between different work points in the roadway. It is especially suitable for working conditions where the tunneling face is constantly moving forward or the transportation line is frequently adjusted. It significantly reduces the labor intensity and installation time of equipment handling, improves the efficiency and deployment flexibility of the device, and meets the actual needs of multi-point and continuous dust removal operations in coal mines.

[0029] In summary:

[0030] First, the entire device is moved along the roadway surface to the target working area, such as near the mining face or transfer point, using wheels 18 fixed at the four corners of the bottom of the frame 1. Once the location is determined, the frame 1 can be fixed with auxiliary supports to prevent displacement during operation. Then, the pump 19 installed on one side of the outer wall of the frame 1 is started. This pump is a high-pressure water pump, which draws water from an external water source, pressurizes it, and then delivers the high-pressure water flow to the inlet on one side of the spray plate 3 through a hose 6 connected to the outlet. The water flow is distributed to multiple nozzles through the internal channels of the spray plate 3, forming fine, high-pressure atomized water droplets, achieving preliminary wetting, coagulation, and sedimentation of suspended coal dust in the air. Simultaneously, for To expand the spray coverage, the air pump 16, bolted to the outer wall of the frame 1, is activated. Compressed air is output from the air pump 16 and delivered through two pipes 14 to connecting pipes 12 located on both sides of the top of the frame 1. Each connecting pipe 12 is connected to multiple pneumatic telescopic rods 13, and the telescopic ends of all pneumatic telescopic rods 13 are fixedly connected to the side wall of the top frame 2. By controlling the alternating air intake and exhaust of the two connecting pipes 12, the pneumatic telescopic rods 13 on both sides alternately extend and retract, thereby pushing the top frame 2 to reciprocate linearly at the top of the frame 1. During this process, the sliding blocks 9 on both sides of the bottom of the top frame 2 move along the inner side plates 15 fixed to the frame 1. The sliding groove 10 slides synchronously, and this guiding structure effectively constrains the movement trajectory of the top frame 2, preventing it from deflecting or jamming during the pushing and pulling process, ensuring smooth and reliable movement. As the top frame 2 moves back and forth, the spray plate 3 slidably connected to its top also synchronously scans and sprays horizontally, achieving uniform coverage of the width of the alley. In addition, when it is necessary to adjust the spray angle or height to deal with different dust-generating positions, the cylinder 7 fixed to one side of the top of the top frame 2 is activated. Its output shaft passes through the connecting plate 8 and is connected to one side of the bottom of the spray plate 3. The extension and retraction of the cylinder 7 pushes the spray plate 3 to swing or move up and down around the sliding connection point between it and the top frame 2. At this time, the spray... The slider 4 at the bottom of the plate 3 slides within the groove 5 at the top of the top frame 2, providing additional support and guidance for the spray plate 3, preventing structural deformation or nozzle displacement due to unilateral force, and ensuring the stability of the spray direction. Throughout the spraying process, high-pressure water is continuously supplied to the spray plate 3 through the hose 6. The flexible design of the hose 6 adapts to the combined movement of the spray plate 3 in lateral movement and angle adjustment, ensuring unobstructed water flow without leakage. At the same time, the control valves 17 installed on the two pipe bodies 14 can adjust the on / off flow and flow rate of the airflow on both sides according to the actual working conditions, realizing precise control of the moving speed, stroke and frequency of the top frame 2, and enhancing the adaptability of the equipment in complex environments.High-pressure spray dust removal is achieved through the cooperation of pump body 19, hose 6, and spray plate 3, effectively improving the dust capture efficiency of water mist and improving underground air quality. The coordinated action of air pump 16, pipe body 14, connecting pipe 12, and pneumatic telescopic rod 13 drives the top frame 2 to automatically reciprocate at the top of frame 1, solving the problems of fixed spray range and incomplete coverage in traditional spray devices, significantly expanding the lateral coverage area of ​​spraying operations, and improving the comprehensiveness and uniformity of dust removal. The cooperation of side plate 15, sliding groove 10, and sliding block 9 provides a stable and reliable guiding structure for the top frame 2, avoiding operational deviation or jamming caused by uneven pneumatic pushing and pulling forces, and improving the stability and durability of equipment operation. The connection between cylinder 7, connecting plate 8, and spray plate 3 enables dynamic adjustment of the spray plate 3's posture. The sliding support structure of the slider 4 and the chute 5 enhances the rigidity and stability of the spray plate 3 during the swinging process, enabling it to flexibly cope with dust sources of different heights and angles, and improving the targeting and effectiveness of the spray. The setting of two independent pipes 14 achieves symmetrical air supply on both sides, ensuring the synchronicity of the movement of the pneumatic telescopic rods 13 on both sides, and avoiding equipment vibration or off-center load caused by air pressure imbalance. The setting of the control valve 17 enables independent control of airflow, which facilitates the adjustment of operating parameters on site according to space conditions or dust removal needs, improving operational flexibility and maintenance convenience. The setting of the wheels 18 gives the entire device good mobility, which facilitates rapid transfer and deployment when the tunnel face advances or the transportation route changes, reducing installation and commissioning time and improving the efficiency and adaptability of the equipment.

[0031] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A high-pressure spray high-efficiency dust removal device for underground coal mines, comprising a frame, characterized in that, It also includes a top frame that slides on the top of the frame, and an air pump that is fixedly connected to one side of the outer wall of the frame by bolts; The top two sides of the frame are fixedly connected to fixed plates, and connecting pipes are embedded in both fixed plates. Several pneumatic telescopic rods are connected to one side of each connecting pipe. One end of each pneumatic telescopic rod is fixedly connected to the side wall of the top frame. One side of each connecting pipe is connected to the connection port of the air pump. A spray plate is slidably connected to the top of the top frame, and a connecting plate is fixedly connected to one side of the top of the top frame. A cylinder is fixedly connected to one side of the connecting plate by bolts, and the output shaft of the cylinder passes through the connecting plate and is fixedly connected to the bottom side of the spray plate. A pump body is fixedly connected to one side of the outer wall of the frame by bolts. A hose is connected to the outlet of the pump body, and one end of the hose is connected to one side of the spray plate.

2. The high-pressure spray high-efficiency dust removal device for underground coal mines as described in claim 1, characterized in that, The top two sides of the frame are fixedly connected to side plates, and the bottom two sides of the top frame are fixedly connected to sliding blocks, and the two sliding blocks are slidably connected to the two side plates respectively through sliding grooves.

3. The high-pressure spray high-efficiency dust removal device for underground coal mines as described in claim 1, characterized in that, The bottom of the spray plate is fixedly connected to a slider, and the slider is slidably connected to the top of the top frame through a groove.

4. The high-pressure spray high-efficiency dust removal device for underground coal mines as described in claim 1, characterized in that, The air pump has two pipes connected at its connection point, and one end of each pipe is connected to one side of the two connecting pipes.

5. The high-pressure spray high-efficiency dust removal device for underground coal mines as described in claim 4, characterized in that, A control valve is installed at one end of each of the two tubes.

6. The high-pressure spray high-efficiency dust removal device for underground coal mines as described in claim 1, characterized in that, Wheels are fixedly connected to the four corners at the bottom of the frame.

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