Mine fully mechanized caving face multi-point spraying dust-settling device

Abstract

The utility model discloses a multi-point spraying and dust settling device for a fully mechanized caving face of a mine. Comprising a portal frame, a transverse plate installed at one end of the interior of the portal frame in a sliding mode, a tandem type upper spraying assembly installed on the lower surface of the transverse plate and an electric lead screw lifting module installed on the inner wall of one side of the portal frame and used for driving the transverse plate and the tandem type upper spraying assembly to conduct Z-axis lifting, and supporting frames are fixed to the outer walls of the left side and the right side of the transverse plate; and an electric push type lever angle adjusting structure is mounted in the supporting frame. The height and angle adjustable spraying assembly is adopted, the spraying height and angle can be flexibly adjusted according to the position of an actual dust source and the dust raising range, and therefore it is guaranteed that sprayed fog drops can better cover the whole conveying face and dust raising areas on the front side and the rear side of the whole conveying face, dust raising dead angles are effectively reduced, and the dust raising efficiency is improved. And the overall dust falling effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of dust suppression technology in mines, specifically a multi-point spray dust suppression device for fully mechanized mining faces. Background Technology

[0002] Mine belt conveyor face spray dust suppression devices are mainly used to control dust generated during the conveying process, improve the working environment, and protect the health and safety of workers. By spraying fine mist water, the device adheres to the raised dust particles, reducing the concentration of suspended dust in the air. The structure of this type of device mainly includes a nozzle system, a water source system, a control system, and a pipeline system. The nozzles are installed on both sides or above the conveyor face and can spray water into fine mist droplets to form a fog curtain covering the conveying area. The water source consists of pumps, filters, etc., to ensure that the nozzles receive stable water pressure and water volume. The control system adjusts the spraying time and frequency according to the dust concentration or operational needs to achieve automated management. The process of spray dust suppression includes several steps: water supply, atomization spraying, dust adhesion, and settling. Water is sprayed out through the nozzle, forming a fine mist that covers the raised dust particles, adhering the dust to the water droplets. As the water droplets settle or fall onto the conveyor surface, the suspended dust in the air is significantly reduced. However, current spray dust suppression devices have a limited spray surface and spray points, and some nozzles have limited spray angles and spray distances, resulting in a small coverage area that is difficult to fully cover the conveyor surface. In this case, dust will still be raised in large quantities in areas not covered by the spray, especially in areas far from the nozzles where the droplets cannot reach and the dust is not effectively suppressed. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-point spray dust suppression device for fully mechanized mining faces. A gantry frame is installed at the top of the conveyor frame of the mine belt conveyor. The distance between the series-connected upper spray components and the conveyor belt surface is controlled by the electric screw lifting module in the gantry frame. The electric push lever angle adjustment structure controls the angle of the side spray components on the side of the belt conveyor, so as to carry out spray dust suppression treatment from above and front and rear sides of the belt conveyor surface, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-point spray dust suppression device for a fully mechanized longwall mining face, comprising a gantry frame, a horizontal plate slidably installed at one end inside the gantry frame, a series-connected upper spray assembly installed on the lower surface of the horizontal plate, and an electric screw lifting module installed on one inner wall of the gantry frame for driving the horizontal plate and the series-connected upper spray assembly to lift and lower along the Z-axis. Support frames are fixed on the outer walls of both sides of the horizontal plate, and an electric push lever angle adjustment structure is installed inside the support frame. A side spray assembly is installed at the movable end of the electric push lever angle adjustment structure. A control panel is installed on one side of the top of the gantry frame and is electrically connected to the input end of the electric screw lifting module, the series-connected upper spray assembly, the electric push lever angle adjustment structure, and the side spray assembly.

[0005] Preferably, the electric screw lifting module includes two shelves fixed on the inner wall of one side of the gantry frame, two support columns fixed between the two shelves, and a servo motor installed at the top of one of the shelves. A screw is installed at the bottom end of the drive shaft of the servo motor, and a nut assembly is installed at one end of the surface of the screw. The nut assembly is fixedly connected to the horizontal plate, and the horizontal plate is slidably engaged with the two support columns. The input end of the servo motor is electrically connected to the output end of the control panel.

[0006] Preferably, the series-connected top spray assembly includes multiple straight pipes installed at equal intervals on the lower surface of the horizontal plate, a U-shaped connecting pipe installed between two adjacent straight pipes, and several atomizing nozzles installed on the lower surface of the straight pipes.

[0007] Preferably, one end of one of the straight pipes is equipped with a solenoid valve, and the input end of the solenoid valve is electrically connected to the output end of the control panel.

[0008] Preferably, the electric push lever angle adjustment structure includes an electric push rod hinged to one side of the top of the support frame, a rotating shaft rotatably mounted on the lower surface of the support frame, and a swing arm fixed at one end of the rotating shaft surface. The upper end of the swing arm is hinged to the top of the piston rod of the electric push rod. A connecting plate is fixed to one end of the rotating shaft. The side-mounted spray assembly is mounted on the outer wall of one side of the connecting plate. The input end of the electric push rod is electrically connected to the output end of the control panel.

[0009] Preferably, a rectangular cutout is provided on one side of the top of the support frame for the swing arm to deflect.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This multi-point spray dust suppression device for fully mechanized mining faces is equipped with a structure that includes a gantry frame, a control panel, an electric screw lifting module, a series-connected upper spray assembly, an electric push lever angle adjustment structure, and a side spray assembly. The electric screw lifting module in the gantry frame controls the distance between the series-connected upper spray assembly and the conveyor belt surface, while the electric push lever angle adjustment structure controls the angle of the side spray assembly on the side of the conveyor belt. This allows for dust suppression spraying from above and the front and rear sides of the conveyor belt surface. The adjustable height and angle of the spray assembly can flexibly adjust the spray height and angle according to the actual location of the dust source and the dust range, thereby ensuring that the spray droplets can better cover the entire conveyor surface and the dust-raising areas on its front and rear sides, effectively reducing the dead angles of dust raising and improving the overall dust suppression effect.

[0011] The electric screw lifting module enables precise lifting and lowering of the series-mounted top spray assembly, facilitating rapid adjustment of the spray height based on different operating conditions or changes in dust concentration, ensuring optimal spray coverage. Simultaneously, the electric push lever adjustment structure allows for easy adjustment of the angle of the side spray assembly, enabling precise targeting of dust sources or dust paths for optimal dust suppression. Furthermore, the series-mounted top spray assembly, installed at the top of the conveyor frame, avoids the safety hazards and space limitations associated with installing nozzles on the side of the conveyor belt, resulting in a safer and cleaner working environment. The automated control of the spray adjustment also reduces the need for manual intervention, improving operational efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 This is a side view of the structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 .

[0017] In the diagram: 1. Gantry frame; 2. Horizontal plate; 3. Electric screw lifting module; 4. Series-type top-mounted spray assembly; 401. Straight pipe; 402. U-shaped connecting pipe; 403. Atomizing nozzle; 404. Solenoid valve; 5. Support frame; 6. Electric push lever angle adjustment structure; 7. Side-mounted spray assembly; 8. Control panel. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] Please see Figure 1-5 This utility model provides an embodiment of a multi-point spray dust suppression device for a fully mechanized mining face, comprising a gantry frame 1, a horizontal plate 2 slidably installed at one end inside the gantry frame 1, a series-connected upper spray assembly 4 installed on the lower surface of the horizontal plate 2, and an electric screw lifting module 3 installed on the inner wall of one side of the gantry frame 1 for driving the horizontal plate 2 and the series-connected upper spray assembly 4 to lift and lower the Z-axis. Support frames 5 are fixed on the outer walls of both sides of the horizontal plate 2, and an electric push lever angle adjustment structure 6 is installed inside the support frame 5. A side spray assembly 7 is installed at the movable end of the electric push lever angle adjustment structure 6. A control panel 8 is installed on one side of the top of the gantry frame 1 and is electrically connected to the input end of the electric screw lifting module 3, the series-connected upper spray assembly 4, the electric push lever angle adjustment structure 6, and the side spray assembly 7.

[0020] The electric screw lifting module 3 includes two shelves fixed on the inner wall of one side of the gantry frame 1, two support columns fixed between the two shelves, and a servo motor installed on the top of one of the shelves. A screw is installed at the bottom of the drive shaft of the servo motor, and a nut pair is installed at one end of the screw surface. The nut pair is fixedly connected to the horizontal plate 2. The horizontal plate 2 is slidably engaged with the two support columns. The input end of the servo motor is electrically connected to the output end of the control panel 8. The servo motor in the electric screw lifting module 3 drives the screw to rotate, and then the screw drives the horizontal plate 2, support frame 5, and series-mounted upper spray assembly 4 to lift and lower the Z-axis through the nut pair, so as to quickly adjust the series-mounted upper spray assembly 4 to maintain the optimal distance from the conveying surface and improve the uniformity of spray coverage.

[0021] The series-connected top spray assembly 4 includes multiple straight pipes 401 installed at equal intervals on the lower surface of the horizontal plate 2, a U-shaped connecting pipe 402 installed between two adjacent straight pipes 401, and several atomizing nozzles 403 installed on the lower surface of the straight pipes 401. One end of one of the straight pipes 401 is equipped with a solenoid valve 404. The input end of the solenoid valve 404 is electrically connected to the output end of the control panel 8. The solenoid valve 404 is connected to an external delivery pump through a pipe. When the solenoid valve 404 is normally open, water flows through the straight pipes 401 and the U-shaped connecting pipe 402 and is continuously sprayed out through the atomizing nozzles 403. The series arrangement of multiple nozzles can achieve uniform spraying of the area above the conveying surface and minimize dust rising.

[0022] The electric push lever angle adjustment structure 6 includes an electric push rod hinged to one side of the top of the support frame 5, a rotating shaft rotatably mounted on the lower surface of the support frame 5, and a swing arm fixed at one end of the rotating shaft surface. The upper end of the swing arm is hinged to the top of the piston rod of the electric push rod. A connecting plate is fixed at one end of the rotating shaft. The side spray assembly 7 is mounted on the outer wall of one side of the connecting plate. The input end of the electric push rod is electrically connected to the output end of the control panel 8. A rectangular hollow part for the swing arm to deflect is provided on one side of the top of the support frame 5.

[0023] The electric push rod in the electric push lever angle adjustment structure 6 drives the swing arm to deflect, which in turn drives the rotating shaft, connecting plate, and side spray assembly 7 to rotate, thereby changing the spray angle of the side spray assembly 7. By realizing the rapid adjustment of the nozzle angle in the side spray assembly 7, the accuracy of spray coverage is ensured. In addition, the side spray assembly 7 provides directional spraying for the side areas where dust is easily dispersed, thereby enhancing the dust suppression effect.

[0024] In this embodiment, during use, it is first confirmed that the power supply to the electric screw lifting module 3, the electric push lever angle adjustment structure 6, and the control panel 8 is normal, and that the water flow at the supply end of the series-connected upper spray assembly 4 and the side spray assembly 7 is stable, with no abnormal vibration or malfunction in the device. Then, based on the current working environment and dust concentration of the mine conveyor belt, the operator uses the control panel 8 to operate the electric screw lifting module 3, raising the horizontal plate 2, the series-connected upper spray assembly 4, the electric push lever angle adjustment structure 6, and the side spray assembly 7 to an appropriate height. At this time, the series-connected upper spray assembly 4 is a certain distance from the conveyor surface of the mine conveyor to ensure that the spray can fully cover the entire conveying area. Then, the electric push lever angle adjustment structure 6 is used to adjust... Adjust the angle of the side-mounted spray assembly 7 to align it with the dust source or dust path. After adjustment, reconfirm the stability of the spray angle and height of the side-mounted spray assembly 7 to ensure comprehensive and unbiased spray coverage. Once the device is confirmed to be in place, turn on the conveying pump connected to the series-connected top spray assembly 4 and the side spray assembly 7. The series-connected top spray assembly 4 covers the area above the conveying surface, effectively suppressing dust rise, while the side spray assembly 7 sprays water mist from the side to suppress dust in areas where dust may be dispersed. During dust suppression, staff can fine-tune the height of the series-connected top spray assembly 4 and the side spray assembly 7 or adjust the spray angle of the side spray assembly 7 as needed based on changes in dust concentration to maximize spray coverage.

Claims

1. A multi-point spray dust suppression device for fully mechanized longwall mining faces, characterized in that: The system includes a gantry frame (1), a horizontal plate (2) that is slidably installed at one end inside the gantry frame (1), a series-type upper spray assembly (4) installed on the lower surface of the horizontal plate (2), and an electric screw lifting module (3) installed on the inner wall of one side of the gantry frame (1) for driving the horizontal plate (2) and the series-type upper spray assembly (4) to lift and lower the Z-axis. Support frames (5) are fixed on the outer walls of both sides of the horizontal plate (2), and an electric push lever angle adjustment structure (6) is installed inside the support frame (5). A side spray assembly (7) is installed on the movable end of the electric push lever angle adjustment structure (6). A control panel (8) is installed on one side of the top of the gantry frame (1) and is electrically connected to the input end of the electric screw lifting module (3), the series-type upper spray assembly (4), the electric push lever angle adjustment structure (6), and the side spray assembly (7).

2. The multi-point spray dust suppression device for fully mechanized longwall mining faces according to claim 1, characterized in that: The electric screw lifting module (3) includes two shelves fixed on the inner wall of one side of the gantry frame (1), two support columns fixed between the two shelves, and a servo motor installed at the top of one of the shelves. A screw is installed at the bottom of the drive shaft of the servo motor. A nut pair is installed at one end of the surface of the screw. The nut pair is fixedly connected to the horizontal plate (2). The horizontal plate (2) is slidably engaged with the two support columns. The input end of the servo motor is electrically connected to the output end of the control panel (8).

3. The multi-point spray dust suppression device for fully mechanized longwall mining faces according to claim 1, characterized in that: The series-connected top spray assembly (4) includes multiple straight pipes (401) installed at equal intervals on the lower surface of the horizontal plate (2), a U-shaped connecting pipe (402) installed between two adjacent straight pipes (401), and several atomizing nozzles (403) installed on the lower surface of the straight pipes (401).

4. A multi-point spray dust suppression device for fully mechanized longwall mining faces according to claim 3, characterized in that: One end of one of the straight pipes (401) is equipped with a solenoid valve (404), and the input end of the solenoid valve (404) is electrically connected to the output end of the control panel (8).

5. A multi-point spray dust suppression device for fully mechanized longwall mining faces according to claim 1, characterized in that: The electric push lever angle adjustment structure (6) includes an electric push rod hinged to one side of the top of the support frame (5), a rotating shaft rotatably mounted on the lower surface of the support frame (5), and a swing arm fixed at one end of the rotating shaft surface. The upper end of the swing arm is hinged to the top of the piston rod of the electric push rod. A connecting plate is fixed at one end of the rotating shaft. The side-mounted spray assembly (7) is mounted on the outer wall of one side of the connecting plate. The input end of the electric push rod is electrically connected to the output end of the control panel (8).

6. A multi-point spray dust suppression device for fully mechanized longwall mining faces according to claim 5, characterized in that: The support frame (5) has a rectangular hollow section on one side of its top end for the swing arm to deflect.

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