Spraying and dust-settling system for coal mine belt lane

Abstract

The utility model provides a coal mine belt roadway spraying dust-settling system which comprises a belt conveyor and a water supply pipe assembly, the belt conveyor is arranged in a coal mine roadway, the water supply pipe assembly comprises a main pipe and a plurality of branch pipes, a plurality of sprayers are arranged on the branch pipes at intervals, and each sprayer comprises a liquid inlet pipe, a main sprayer and two auxiliary sprayers. The liquid inlet pipe is connected with the branch pipe, the main spray head and the two auxiliary spray heads are arranged on the liquid inlet pipe, the two auxiliary spray heads are oppositely located on the two sides of the main spray head, the included angle between the straight line where the spraying direction of the auxiliary spray heads is located and the straight line where the spraying direction of the main spray head is located is 0-90 degrees, and a flow control valve is arranged between the branch pipe and the main pipe. The flow control valve is electrically connected with the belt conveyor so that the sprayer and the belt conveyor can be started and stopped synchronously. According to the coal mine belt roadway spraying and dust falling system, synchronous linkage of the sprayers and the belt conveyor can be achieved, and the dust falling efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mine engineering technology, specifically to a coal mine belt conveyor roadway spray dust suppression system. Background Technology

[0002] In coal mining, dust removal devices are typically used to control dust in belt conveyor areas. Most of these devices are equipped with manual switches, allowing operators to determine whether to activate the dust removal function based on site conditions. However, due to the complex and variable underground environment, the rate and concentration of coal dust generation are often difficult to predict accurately. Operators often find it challenging to activate the dust removal devices as soon as dust begins to accumulate, frequently intervening only when the dust has already severely impacted the working environment. This not only reduces dust removal efficiency but may also cause them to miss the optimal dust removal window, resulting in poor dust removal performance. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. This invention proposes a dust suppression spray system for coal mine belt conveyor roadways, which can achieve synchronous linkage between the sprayer and the belt conveyor, helping to improve dust suppression efficiency.

[0004] The dust suppression spray system for coal mine belt conveyor roadways provided in this embodiment includes a belt conveyor and a water supply pipe assembly. The belt conveyor is located in the coal mine roadway. The water supply pipe assembly includes a main pipe and multiple branch pipes. The main pipe extends along the conveying direction of the belt conveyor, and the multiple branch pipes are spaced apart along the conveying direction of the belt conveyor. The branch pipes extend along the width direction of the belt conveyor and are connected to the main pipe. Multiple sprayers are spaced apart on the branch pipes. Each sprayer includes an inlet pipe, a main nozzle, and two auxiliary nozzles. The inlet pipe is connected to the branch pipe. The main nozzle and the two auxiliary nozzles are both located on the inlet pipe. The two auxiliary nozzles are located opposite each other on both sides of the main nozzle, and the angle between the straight line of the spraying direction of the auxiliary nozzles and the straight line of the spraying direction of the main nozzles is set to 0° to 90°. A flow control valve is provided between the branch pipes and the main pipe. The flow control valve is electrically connected to the belt conveyor so that the sprayers start and stop synchronously with the belt conveyor.

[0005] In summary, the coal mine belt conveyor dust suppression system provided by this utility model embodiment can achieve synchronous linkage between the sprayer and the belt conveyor through the flow control valve, thereby improving dust suppression efficiency while avoiding water waste. Furthermore, the sprayer's design with multiple nozzles can increase the spray range, enabling precise targeting of dust in different areas and further improving dust suppression efficiency.

[0006] In some embodiments, both the main nozzle and the auxiliary nozzle include a base, a head cover, and a threaded sleeve. The base has a water inlet hole connected to the liquid inlet pipe. The head cover has a plug corresponding to the water inlet hole. There is a gap between the plug and the outlet of the water inlet hole. The threaded sleeve is fitted on the outside of the head cover and connected to the base. The side wall of the head cover has a plurality of spray holes spaced apart. The water inlet hole, the gap, and the spray holes are connected in sequence.

[0007] In some embodiments, the inlet pipe includes a first pipe, a second pipe, a third pipe, and a plurality of corrugated pipes. The first pipe and the second pipe, as well as the first pipe and the third pipe, are connected by corrugated pipes. The main nozzle is disposed on the first pipe, one of the two auxiliary nozzles is disposed on the second pipe, and the other of the two auxiliary nozzles is disposed on the third pipe.

[0008] In some embodiments, the water supply pipe assembly further includes a flow monitoring module, which is disposed on the branch pipe and is used to monitor the flow rate through the branch pipe.

[0009] In some embodiments, the water supply pipe assembly further includes a dust monitoring module, which is electrically connected to the flow control valve. The dust monitoring module is used to monitor the dust concentration in the roadway to regulate the opening degree of the flow control valve.

[0010] In some embodiments, the water supply pipe assembly further includes an infrared monitoring module, which is mounted on the belt conveyor and is used to monitor the passage of personnel and vehicles in order to regulate the opening of the flow control valve.

[0011] In some embodiments, the belt conveyor further includes a frame, a conveyor belt, and a coal quantity monitoring module. The conveyor belt is wound around the frame, and the coal quantity monitoring module is electrically connected to the flow control valve. The coal quantity monitoring module is used to monitor the amount of coal on the conveyor belt to control the opening degree of the flow control valve.

[0012] In some embodiments, the coal mine belt conveyor dust suppression system further includes a display, which is electrically connected to the flow control valve, and the display is used to display the flow rate through each of the branch pipes.

[0013] In some embodiments, the coal mine belt conveyor dust suppression spray system further includes a fault alarm module, which is electrically connected to at least one of the water supply pipe assembly, the sprayer, and the belt conveyor, and is used to issue an alarm signal when a component failure is detected.

[0014] In some embodiments, the fault alarm module includes an audible alarm and / or a visual alarm. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a coal mine belt conveyor roadway spray dust suppression system provided in one embodiment of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the sprayer in a coal mine belt conveyor dust suppression system according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of the main nozzle in a coal mine belt conveyor dust suppression system provided in one embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of a coal mine belt conveyor roadway spray dust suppression system provided in another embodiment of this utility model.

[0019] Attached reference numerals: 100, Coal mine conveyor belt dust suppression system; 200, Coal mine roadway;

[0020] 10. Belt conveyor; 11. Frame; 12. Conveyor belt;

[0021] 20. Water supply pipe assembly; 21. Main pipe; 22. Branch pipe; 23. Flow control valve; 24. Controller;

[0022] 30. Sprayer; 31. Liquid inlet pipe; 311. First pipe; 312. Second pipe; 313. Third pipe; 314. Corrugated pipe; 32. Main nozzle; 321. Base; 3211. Water inlet; 322. Head cap; 3221. Plug; 3222. Spray hole; 323. Screw sleeve; 33. Auxiliary nozzle;

[0023] 40. Flow monitoring module; 50. Fault alarm module; 60. Dust monitoring module; 70. Infrared monitoring module; 80. Coal quantity monitoring module; 90. Display. Detailed Implementation

[0024] The embodiments of the present invention are described in detail below, examples of which 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, and should not be construed as limiting the present invention.

[0025] like Figures 1 to 4As shown, one embodiment of this utility model provides a coal mine belt conveyor roadway spray dust suppression system 100, which includes a belt conveyor 10 and a water supply pipe assembly 20. The belt conveyor 10 is located inside the coal mine roadway 200. The water supply pipe assembly 20 includes a main pipe 21 and multiple branch pipes 22. The main pipe 21 extends along the conveying direction of the belt conveyor 10, and the multiple branch pipes 22 are spaced apart along the conveying direction of the belt conveyor 10. The branch pipes 22 extend along the width direction of the belt conveyor 10 and are connected to the main pipe 21. Multiple sprayers 30 are spaced apart on the branch pipes 22. Each sprayer 30 includes an inlet pipe 31, a main nozzle 32, and two auxiliary nozzles 33. The inlet pipe 31 is connected to the branch pipes 22. The main nozzle 32 and the two auxiliary nozzles 33 are both located on the inlet pipe 31. The two auxiliary nozzles 33 are located opposite each other on both sides of the main nozzle 32, and the angle between the straight line of the spraying direction of the auxiliary nozzles 33 and the straight line of the spraying direction of the main nozzle 32 is set to 0° to 90°. A flow control valve 23 is provided between the branch pipes 22 and the main pipe 21. The flow control valve 23 is electrically connected to the belt conveyor 10 so that the sprayers 30 and the belt conveyor 10 start and stop synchronously.

[0026] Specifically, the belt conveyor 10 is installed inside the coal mine roadway 200, undertaking the task of continuously transporting coal and other minerals. The water supply pipe assembly 20 achieves the function of spraying dust suppression through at least one main pipe 21 and multiple branch pipes 22 arranged at intervals along the conveying direction of the belt conveyor 10. Among them, the main pipe 21 is like a major artery, extending along the length of the belt conveyor 10, responsible for transporting water to each branch point. The multiple branch pipes 22 are like capillaries, extending along the width of the belt conveyor 10 and connected to the main pipe 21 through a precise connection method, ensuring that the water source can be evenly and stably distributed to each spray area.

[0027] Each sprayer 30 includes an inlet pipe 31, a main nozzle 32, and two auxiliary nozzles 33. The inlet pipe 31 acts as a bridge connecting the branch pipe 22 and the nozzle, ensuring a smooth water supply. The main nozzle 32 is located at the center of the inlet pipe 31 and is responsible for spraying the main water mist onto the conveyor belt and surrounding space. The two auxiliary nozzles 33 are cleverly positioned on either side of the main nozzle 32. They not only enhance the coverage of the spray but also allow for precise targeting of dust in different areas by adjusting the spray angle (the angle between this angle and the spray direction of the main nozzle 32 is adjustable between 0° and 90°), greatly improving dust suppression efficiency. Furthermore, this multi-nozzle collaborative mechanism not only enhances the dust suppression effect but also further conserves water resources by reducing unnecessary spray overlap.

[0028] Furthermore, the flow control valve 23 can achieve intelligent linkage with the belt conveyor 10 through electrical connection. When the belt conveyor 10 starts, the flow control valve 23 can receive the corresponding electrical signal and then automatically open, so that the sprayer 30 works synchronously with the belt conveyor 10; conversely, when the belt conveyor 10 stops running, the sprayer 30 will also shut down synchronously, effectively avoiding the waste of water resources and achieving dual optimization of dust suppression effect and resource utilization rate.

[0029] In summary, the coal mine belt conveyor dust suppression system 100 provided in this embodiment of the present invention can realize the synchronous linkage between the sprayer 30 and the belt conveyor 10 through the flow control valve 23, thereby improving the dust suppression efficiency while avoiding the waste of water resources. Furthermore, the sprayer 30 can increase the spray range through the design of multiple nozzles, which can achieve precise targeting of dust in different areas and help improve the dust suppression efficiency.

[0030] It should be noted that the coal mine belt conveyor roadway spray dust suppression system 100 provided in this embodiment of the utility model also includes a controller 24, which is electrically connected to the flow control valve 23 to control the opening degree of the flow control valve 23.

[0031] like Figure 2 , Figure 3 As shown, in some embodiments, both the main nozzle 32 and the auxiliary nozzle 33 include a base 321, a head cover 322, and a threaded sleeve 323. The base 321 is provided with a water inlet hole 3211 connected to the liquid inlet pipe 31. The head cover 322 is provided with a plug 3221 corresponding to the water inlet hole 3211. There is a gap between the plug 3221 and the outlet of the water inlet hole 3211. The threaded sleeve 323 is sleeved on the outside of the head cover 322 and connected to the base 321. Multiple spray holes 3222 are provided at intervals on the side wall of the head cover 322. The water inlet hole 3211, the gap, and the spray holes 3222 are connected in sequence.

[0032] Specifically, the plug 3221 is located at the outlet of the water inlet 3211, but a certain gap is maintained between them. This allows the water flow to form a pressure difference after entering the head cover 322, thereby enhancing the spraying effect. Simultaneously, multiple spray holes 3222 are carefully distributed on the side wall of the head cover 322 to ensure that the water mist can be sprayed evenly and finely, covering a wider area. In other words, when the water flow enters the water inlet 3211 from the inlet pipe 31, it undergoes gap adjustment and is then evenly sprayed out through the spray holes 3222 on the head cover 322, improving the efficiency and uniformity of the spray.

[0033] Furthermore, the liquid inlet pipe 31 includes a first pipe 311, a second pipe 312, a third pipe 313, and a plurality of corrugated pipes 314. The first pipe 311 and the second pipe 312, as well as the first pipe 311 and the third pipe 313, are connected by corrugated pipes 314. The main nozzle 32 is located on the first pipe 311, one of the two auxiliary nozzles 33 is located on the second pipe 312, and the other of the two auxiliary nozzles 33 is located on the third pipe 313.

[0034] The first tube 311 is cleverly connected to the second tube 312, and the first tube 311 is connected to the third tube 313 via a corrugated pipe 314. The flexibility of the corrugated pipe 314 allows for bending and stretching within a certain range, facilitating adjustment of the position and direction of the auxiliary nozzle 33. In other words, the position and spray direction of the auxiliary nozzle 33 can be precisely controlled by adjusting the degree of bending of the corrugated pipe 314. This allows the nozzle system to flexibly adjust the spray range and direction according to the dust distribution and dust generation frequency in the actual working environment, ensuring maximum dust suppression effect.

[0035] Furthermore, by adjusting the curvature of the bellows 314, not only can the spray direction of the auxiliary nozzle 33 be finely adjusted, but the dust suppression needs of different areas in the conveyor belt tunnel can also be addressed. For example, in areas where dust frequently arises or where dust concentration is high, the curvature of the bellows 314 can be increased to bring the auxiliary nozzle 33 closer to the area, thereby achieving targeted dust suppression. In areas with low dust concentration or where dust is less likely to arise, the curvature of the bellows 314 can be appropriately reduced to expand the spray range and cover a wider area.

[0036] like Figure 4 As shown, in some embodiments, the water supply pipe assembly 20 further includes a flow monitoring module 40, which is located on the branch pipe 22 and is used to monitor the flow rate through the branch pipe 22. In other words, the system can continuously monitor the flow rate of the branch pipe 22 to grasp the dynamic changes in water flow in real time, thereby promptly identifying and resolving potential problems of insufficient or excessive flow, effectively avoiding poor dust suppression or water waste caused by abnormal flow.

[0037] More importantly, when the system detects that the flow rate of a certain branch pipe 22 is consistently low, it can alert the operator to check whether there are any blockages or leaks in that branch pipe 22, so that timely repairs or replacements can be carried out. Similarly, when the system detects that the overall flow rate is too high, it can also automatically adjust the opening of the flow control valve 23 to reduce the water flow velocity and achieve more energy-efficient operation.

[0038] Furthermore, the coal mine belt conveyor roadway spray dust suppression system 100 also includes a fault alarm module 50, which is electrically connected to at least one of the water supply pipe assembly 20, the sprayer 30 and the belt conveyor 10, and is used to issue an alarm signal when a component failure is detected.

[0039] Furthermore, the fault alarm module 50 includes an audible alarm and / or a visual alarm. The audible alarm can immediately emit a clear and loud alarm sound upon detecting a system fault. This sound signal has strong penetrating power and is easily detected, ensuring that operators can hear the alarm information immediately, even in noisy coal mine operating environments, thus enabling them to quickly take action to troubleshoot and handle the fault.

[0040] A light alarm can indicate a system malfunction by emitting a bright, flashing light signal. This light signal is visually appealing and easy to identify, ensuring that operators can clearly see the alarm information even in low light or obstructed conditions.

[0041] In this embodiment, the fault alarm module 50 is connected to the water supply pipe assembly 20, the sprayer 30, and the belt conveyor 10, enabling the fault alarm module 50 to receive real-time operating status information from these components, including but not limited to water pressure, flow rate changes, motor operating status, and the working status of the sprayer 30. Once the system detects any abnormality or fault, such as water leakage in the water supply pipe assembly 20, blockage in the sprayer 30, or shutdown of the belt conveyor 10, the fault alarm module 50 will immediately activate and issue a clear and loud alarm signal to attract the attention of the operator.

[0042] In this embodiment, the fault alarm module 50 is equipped with both an audible alarm and a visual alarm, forming a dual alarm mechanism. This not only improves the redundancy and reliability of alarm information but also enhances the operator's alertness and response speed through the dual stimulation of sound and light signals. When a system fault occurs, both the audible and visual alarms will activate simultaneously, conveying fault information to the operator in the most direct and effective way. This ensures that they can quickly take measures to troubleshoot and handle the fault, thereby minimizing the impact of the fault on production operations.

[0043] like Figure 4 As shown, in some embodiments, the water supply pipe assembly 20 also includes a dust monitoring module 60, which is electrically connected to the flow control valve 23. The dust monitoring module 60 is used to monitor the dust concentration in the roadway to control the opening degree of the flow control valve 23.

[0044] The dust monitoring module 60 and the flow control valve 23 are electrically connected, forming an intelligent control mechanism. When the dust monitoring module 60 detects that the dust concentration in the roadway exceeds a preset threshold, it immediately sends a signal to the flow control valve 23, instructing it to adjust its opening degree to increase the spray volume, thereby more effectively reducing the dust concentration. Conversely, when the dust concentration drops below a safe level, the dust monitoring module 60 sends a signal to the flow control valve 23 again, instructing it to reduce its opening degree to decrease unnecessary spray volume and achieve energy saving and consumption reduction.

[0045] Furthermore, this intelligent control mechanism not only improves the response speed and accuracy of the spray dust suppression system, but also achieves efficient water resource utilization by dynamically adjusting the spray volume. This avoids resource waste and environmental pollution caused by excessive spraying. Simultaneously, intelligent control allows the system to precisely suppress dust based on the actual dust concentration within the tunnel, improving dust suppression efficiency and the quality of the working environment.

[0046] In this embodiment, the dust monitoring module 60 can be installed at a key location in the roadway, such as above or near the belt conveyor 10, to ensure that the most accurate dust concentration data can be captured.

[0047] like Figure 4 As shown, in some embodiments, the water supply pipe assembly 20 further includes an infrared monitoring module 70, which is mounted on the belt conveyor 10. The infrared monitoring module 70 is used to monitor the passage of personnel and vehicles to regulate the opening of the flow control valve 23. The infrared monitoring module 70 may include an infrared sensor.

[0048] The infrared monitoring module 70 can be installed at key locations on the belt conveyor 10, such as near the entrance or exit, so as to accurately monitor the dynamics of personnel and vehicles. This allows full use of the non-contact detection principle and high sensitivity of the infrared monitoring module 70, enabling the system to obtain real-time information on the passage of personnel and vehicles without interfering with normal transportation operations.

[0049] For example, when the infrared monitoring module 70 detects that a person or vehicle is about to pass through the belt conveyor 10, it immediately sends a signal to the flow control valve 23, instructing it to temporarily shut off or reduce the spray volume. This intelligent control mechanism aims to avoid unnecessary interference or safety hazards to personnel and vehicles caused by spraying operations, ensuring safe passage. At the same time, by precisely controlling the changes in spray volume, the system can also minimize the impact on dust suppression effectiveness while ensuring safety.

[0050] Once personnel and vehicles have safely passed, the infrared monitoring module 70 sends a signal to the flow control valve 23 again, instructing it to restore the normal spray volume to ensure the continuity and efficiency of the dust suppression operation. This intelligent control mechanism not only improves the system's response speed and accuracy but also optimizes the efficient use of water resources and the dust suppression effect by dynamically adjusting the spray volume.

[0051] Furthermore, the infrared monitoring module 70 can work in conjunction with other components such as the dust monitoring module 60 and the flow control valve 23 to form a more complete intelligent control system. For example, during periods of personnel or vehicle traffic, the system can automatically adjust the spraying strategy according to the actual situation to maintain the dust suppression effect as much as possible while ensuring safety. During non-traffic periods, the system can operate at full power to quickly reduce the dust concentration in the tunnel.

[0052] like Figure 1 and Figure 4 As shown, in some embodiments, the belt conveyor 10 further includes a frame 11, a conveyor belt 12, and a coal quantity monitoring module 80. The conveyor belt 12 is wound around the frame 11. The coal quantity monitoring module 80 is electrically connected to the flow control valve 23. The coal quantity monitoring module 80 is used to monitor the amount of coal on the conveyor belt 12 to control the opening degree of the flow control valve 23.

[0053] The coal quantity monitoring module 80 can be positioned above or to the side of the conveyor belt 12 to ensure the capture of the most accurate and comprehensive coal quantity data. When the coal quantity monitoring module 80 detects an increase in the coal quantity on the conveyor belt 12, it immediately sends a signal to the flow control valve 23, instructing it to increase its opening degree accordingly to increase the spray volume, thereby more effectively covering and settling the dust generated during coal transportation. Conversely, when the coal quantity decreases, the coal quantity monitoring module 80 again sends a signal to the flow control valve 23, instructing it to decrease its opening degree to avoid unnecessary spray waste and achieve energy saving and consumption reduction.

[0054] The coal quantity monitoring module 80 not only improves the response speed and accuracy of the spray dust suppression system, but also achieves efficient water resource utilization and precise control of dust suppression effect by dynamically adjusting the matching relationship between spray volume and coal quantity. This avoids the problems of poor dust suppression effect due to insufficient spray volume or resource waste due to excessive spray volume.

[0055] like Figure 4 As shown, in some embodiments, the coal mine belt conveyor roadway spray dust suppression system 100 further includes a display 90, which may be located at the end of the belt conveyor 10 or at the entrance of the coal mine roadway 200. The display 90 is electrically connected to the flow control valve 23 and is used to display the flow rate through each branch pipe 22.

[0056] The display 90 can be securely mounted at the end of the belt conveyor 10 or at a prominent entrance to the coal mine roadway 200. These locations allow operators to observe the system up close and cover key areas of the spray dust suppression system within their line of sight.

[0057] An electrical connection is established between the display 90 and the flow control valve 23, enabling the display 90 to receive and display the flow data of each branch pipe 22 in real time and accurately. This data can be presented intuitively through various forms such as dynamic charts, numerical displays, or progress bars, allowing operators to quickly grasp the spray status of each branch pipe 22, including the spray volume, its changing trend, and whether it meets preset standards. This enables operators to promptly identify and resolve potential problems such as uneven spraying and abnormal flow, helping to ensure the efficiency and stability of the spray dust suppression operation.

[0058] Furthermore, the display 90 can be flexibly configured to display content according to the actual needs of the operators, including but not limited to dust concentration monitoring results, coal quantity change trends, infrared monitoring module 70 detection status, and system alarm information. This information is displayed through an intuitive and easy-to-understand graphical interface, enabling operators to comprehensively and accurately understand the overall operating status of the spray dust suppression system, thereby making more precise and rapid control decisions.

[0059] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0061] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0063] In this utility model, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A dust suppression spray system for coal mine conveyor belt roadways, characterized in that, The system includes a belt conveyor and a water supply pipe assembly. The belt conveyor is located in a coal mine roadway. The water supply pipe assembly includes a main pipe and multiple branch pipes. The main pipe extends along the conveying direction of the belt conveyor, and the multiple branch pipes are spaced apart along the conveying direction of the belt conveyor. The branch pipes extend along the width direction of the belt conveyor and are connected to the main pipe. Multiple sprayers are spaced apart on the branch pipes. Each sprayer includes an inlet pipe, a main nozzle, and two auxiliary nozzles. The inlet pipe is connected to the branch pipe. The main nozzle and the two auxiliary nozzles are both located on the inlet pipe. The two auxiliary nozzles are located opposite each other on both sides of the main nozzle, and the angle between the spray direction of the auxiliary nozzles and the spray direction of the main nozzles is set to 0° to 90°. A flow control valve is provided between the branch pipes and the main pipe. The flow control valve is electrically connected to the belt conveyor to enable the sprayers to start and stop synchronously with the belt conveyor.

2. The coal mine conveyor belt dust suppression spray system according to claim 1, characterized in that, Both the main nozzle and the auxiliary nozzle include a base, a head cover, and a threaded sleeve. The base has a water inlet hole connected to the liquid inlet pipe. The head cover has a plug corresponding to the water inlet hole. There is a gap between the plug and the outlet of the water inlet hole. The threaded sleeve is fitted on the outside of the head cover and connected to the base. Multiple spray holes are spaced apart on the side wall of the head cover. The water inlet hole, the gap, and the spray holes are connected in sequence.

3. The coal mine belt conveyor roadway spray dust suppression system according to claim 1, characterized in that, The inlet pipe includes a first pipe, a second pipe, a third pipe, and multiple corrugated pipes. The first pipe and the second pipe, as well as the first pipe and the third pipe, are connected by corrugated pipes. The main nozzle is located on the first pipe, one of the two auxiliary nozzles is located on the second pipe, and the other of the two auxiliary nozzles is located on the third pipe.

4. The coal mine belt conveyor roadway spray dust suppression system according to claim 1, characterized in that, The water supply pipe assembly also includes a flow monitoring module, which is located on the branch pipe and is used to monitor the flow rate through the branch pipe.

5. The coal mine conveyor belt dust suppression spray system according to claim 1, characterized in that, The water supply pipe assembly also includes a dust monitoring module, which is electrically connected to the flow control valve. The dust monitoring module is used to monitor the dust concentration in the roadway to control the opening degree of the flow control valve.

6. The coal mine conveyor belt dust suppression spray system according to claim 1, characterized in that, The water supply pipe assembly also includes an infrared monitoring module, which is mounted on the belt conveyor. The infrared monitoring module is used to monitor the passage of personnel and vehicles in order to control the opening of the flow control valve.

7. The coal mine belt conveyor roadway spray dust suppression system according to claim 1, characterized in that, The belt conveyor also includes a frame, a conveyor belt, and a coal quantity monitoring module. The conveyor belt is wound around the frame. The coal quantity monitoring module is electrically connected to the flow control valve. The coal quantity monitoring module is used to monitor the amount of coal on the conveyor belt to control the opening degree of the flow control valve.

8. The coal mine conveyor belt dust suppression spray system according to claim 1, characterized in that, It also includes a display, which is electrically connected to the flow control valve, and the display is used to display the flow rate through each of the branches.

9. The coal mine belt conveyor roadway spray dust suppression system according to claim 1, characterized in that, It also includes a fault alarm module, which is electrically connected to at least one of the water supply pipe assembly, the sprayer and the belt conveyor, and is used to issue an alarm signal when a component fault is detected.

10. The coal mine belt conveyor roadway spray dust suppression system according to claim 9, characterized in that, The fault alarm module includes an audible alarm and / or a visual alarm.

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