Mining ultrasonic dry fog negative pressure air circulation chemical wetting intelligent dust suppression system

Abstract

The invention relates to the technical field of mining mechanical equipment, in particular to a mining ultrasonic dry fog negative pressure gas circulation chemical wetting intelligent dust suppression system. Comprising a spraying dust-settling module, a dust detection module, a spontaneous power supply module and an information control module. The dust detection module is used for monitoring the dust concentration in a roadway in real time and transmitting a detection signal to the information control module; the information control module analyzes and outputs the detection signal based on the energy provided by the spontaneous power supply module so as to drive the spraying dust suppression module to realize automatic spraying dust suppression. Superfine liquid drops are generated through the synergistic effect of ultrasonic atomization and chemical dust suppression, and dust trapping, settling and source suppression are achieved; a double-layer semi-closed negative pressure circulation structure is adopted to actively guide dust-containing airflow to enter an atomization area, gas self-circulation purification is formed, and the dust removal efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mining machinery equipment, in particular to a mine ultrasonic dry fog negative pressure air circulation chemical condensation intelligent dust suppression system. BACKGROUND

[0002] In recent years, with the continuous rise in demand for coal, the coal industry has vigorously promoted mechanized operations in an effort to achieve new breakthroughs in production efficiency. However, this progress has also brought new challenges. In the long-distance belt conveying roadway underground, the problem of coal dust pollution is becoming increasingly serious. When the belt conveyor is running, the coal dust particles on the surface of the material are affected by wind flow disturbance, mechanical vibration and electrostatic effect, resulting in a large amount of dust. Most of these dusts are respirable dusts with a particle size of less than 7 μm, which form a continuous dust pollution belt along the conveying path. This not only leads to a significant decrease in air quality, but also, due to the extremely small particle size of the dust, it often does not receive enough attention in the case of poor underground environment and difficult detection by personnel. The consequences of this neglect are extremely serious, as it not only seriously threatens the occupational health of underground workers, but also poses a major safety risk to the operation of equipment.

[0003] The existing high-efficiency dust control means is mainly wet spray dust suppression. However, the traditional spray dust suppression has the following shortcomings: (1) The water pressure supplied in the mine roadway is limited, resulting in a large spray particle size when using traditional mechanical atomizing nozzles, which makes it difficult to effectively capture micron-sized respirable dust; (2) The spray jet kinetic energy decays quickly, making it impossible to achieve continuous dust removal in long-distance areas; (3) The droplets diffuse unevenly under the disturbance of the roadway airflow, resulting in poor local dust suppression effect; (4) The spray particle size adheres to the material surface and is easily evaporated due to the influence of factors such as roadway temperature and airflow, resulting in poor dust suppression effect in the rear section of the belt conveyor; (5) The system is mostly controlled by time or manually, which has the problems of high energy consumption, water resource waste and low intelligence level.

[0004] How to efficiently solve the problem of respirable dust pollution in the coal mine underground transportation roadway, improve the level of attention of personnel, and reduce the impact of respirable dust on the health of underground personnel and the safety risk of equipment has become a technical problem that needs to be solved by technical personnel in the field. SUMMARY

[0005] The present application aims to at least improve one of the technical problems existing in the prior art. To this end, the present application proposes a mine ultrasonic dry fog negative pressure air circulation chemical condensation intelligent dust suppression system.

[0006] The technical solution of the present application is as follows: The application discloses an intelligent dust suppression system based on ultrasonic dry fog negative pressure gas circulation and chemical condensation for mines, which is used for a mine belt conveyor. A spray dust suppression module is installed above a conveying path of the mine belt conveyor, and comprises a multi-technology collaborative dust suppression device, a spray solvent storage tank and a stirring mixer. A dust detection module is installed in a conveying roadway of the mine belt conveyor to monitor a dust concentration value in the conveying roadway. A self-power supply module is installed on a support of the mine belt conveyor, and has a power generation device. An information control module is installed on one side of the mine belt conveyor, connected with the spray dust suppression module and the dust detection module, and controls the driving of the spray dust suppression module based on the monitored dust concentration value.

[0007] In a possible technical solution, the multi-technology collaborative dust suppression device further comprises: A main shell is installed above a conveying path of the mine belt conveyor, and has a channel for the entry and exit of coal blocks. A partition plate is installed in the main shell, and divides a cavity of the main shell into a first cavity and a second cavity. Two first guide plates are symmetrically arranged about a center line of the partition plate, and each first guide plate penetrates the partition plate obliquely and is arranged in the first cavity and the second cavity. Two second guide plates are respectively installed on the partition plate between the first air suction hole and the second air suction hole, and the second guide plates are located in the second cavity. A plurality of spray covers are respectively installed on the partition plate surrounding the first air suction hole. A plurality of water distribution pipelines are connected with the main pipeline connected with the outlet of the stirring mixer at one end, and extend into the spray cover at the other end. A gas supply pipeline is connected with a roadway total gas supply pipeline at one end, and extends into the main shell at the other end. A plurality of ultrasonic air atomizing nozzles are correspondingly installed on the water distribution pipeline and the air supply pipeline, and the ultrasonic air atomizing nozzles are used to release spray solvents, so that atomized droplets with a particle size distribution in the range of 10 μm to 60 μm can be generated. The droplets with the particle size distribution can significantly improve the capture probability of micron-sized respirable dust, and the wetting and wrapping effect of the droplets on the dust is optimal when the particle size ratio is 2-3. High-frequency mechanical energy generated by ultrasonic oscillation acts on the liquid surface, so that the liquid is split into fine droplets, and composite atomization effect is formed through compressed air jet, so that the droplets are refined. A dustproof curtain is installed at the inlet and outlet of the passage of the main shell, and a closed dust falling passage is formed with the main shell.

[0008] In a possible technical solution, further, the first guide plate end portion close to the center line of the partition plate has an arc-shaped portion, and the arc-shaped portion has a curved surface deviating from the partition plate, so that the dust-containing airflow flowing out of the second cavity under the negative pressure suction effect can smoothly enter the first air suction hole for secondary dust falling and negative pressure air circulation.

[0009] In a possible technical solution, further, the two second guide plates are inclined to the partition plate and are symmetrically arranged about the center line of the partition plate.

[0010] In a possible technical solution, further, the height of the second guide plate is lower than the height of the spray cover, so that a negative pressure suction field is formed outside the second guide plate and inside the first guide plate under the action of high-pressure airflow, which is more conducive to secondary dust falling and negative pressure air circulation of the dust-containing airflow at the inlet and outlet of the passage and inside the second guide plate.

[0011] In a possible technical solution, further, a liquid level sensor is arranged in the spray solvent storage tank, the liquid level sensor is connected with the information control module, and is used to detect the content of the concentrated spray solvent in the spray solvent storage tank, so as to ensure sufficient spray solvent.

[0012] In a possible technical solution, further, the stirring mixer comprises: A stirring motor is installed at the top of the shell of the stirring mixer. A stirring paddle is fixedly connected with the output shaft of the stirring motor.

[0013] In a possible technical solution, further, the dust detection module comprises a laser scattering type dust concentration sensor, which is installed in the conveying roadway where the mine belt conveyor is located, so as to monitor the dust concentration value in the conveying roadway.

[0014] A multi-directional real-time detection network is formed by installing laser scattering dust concentration sensors in the conveyor roadways where belt conveyors are located within the mine. These sensors operate based on the principle of light scattering, calculating dust concentration by measuring the intensity of light scattered by dust particles from a laser beam. When the dust concentration exceeds a set threshold, the electrical signal output by the laser scattering dust concentration sensor is transmitted to the information control module, which performs signal analysis and logical judgment. The information control module automatically triggers the start and stop commands of the spray dust suppression module based on the changing trend of the detected signal, achieving on-demand spraying and precise dust suppression. To prevent energy waste and equipment wear caused by frequent system start-stops, the information control module incorporates a dust concentration lag range and a delayed feedback mechanism to ensure the stability and economy of system operation.

[0015] In one possible technical solution, the power generation device of the self-generating power supply module further includes: A support frame is installed on the frame of the mine belt conveyor; The mining generator is installed on the support frame and generates electricity by being driven by a belt. Its principle is electromagnetic induction power generation.

[0016] In one possible technical solution, it further includes: The guardrail is installed at the edge of the support frame of the belt conveyor in the mine to prevent materials from leaving the belt conveyor range during transportation and causing potential hazards to the equipment and pedestrians on the pedestrian side.

[0017] The intelligent dust suppression system for mining applications using ultrasonic dry fog negative pressure air circulation chemical wetting and condensation, according to the present invention, has the following beneficial effects: 1. By combining ultrasonic atomization technology with chemical dust suppressants, ultrafine droplets with a particle size of 10μm to 60μm are formed, significantly improving the capture efficiency of micron-sized respirable dust. Simultaneously, the chemical dust suppressant carried by the droplets, upon contact with dust particles, achieves efficient transformation of dust from a suspended phase to a solid phase through multiple mechanisms, including surface wetting, agglomeration, and chemical film solidification. A dust-suppressing film forms on the surface of the sprayed material, effectively preventing secondary dust generation, enhancing dust suppression persistence, reducing water consumption, and achieving dynamic suppression of coal dust throughout the entire process.

[0018] 2. Employing a double-layer semi-enclosed cavity structure and combining it with the principle of negative pressure suction, the system actively guides dust-laden gas from the surrounding roadway into the atomization zone during the spray dust suppression process, achieving localized air self-circulation and purification. The negative pressure airflow not only effectively prevents dust spillage but also re-draws the turbulence generated by the spray into the system, reducing the interference of airflow on the droplet trajectory and increasing the probability of collision with dust particles.

[0019] 3. By collecting dust concentration signals in real time, the spray system can automatically start and stop and adjust the flow rate. When the dust concentration exceeds the set threshold, the system automatically starts the spray execution unit and sprays the spray solvent as needed; when the dust concentration returns to below the safe value, the system automatically stops spraying, achieving the dual purpose of energy saving and precise dust suppression. The self-powered system provides energy to the control module through induction generation, enabling the various parts to work together organically and ensuring that the entire system operates efficiently, stably, and reliably.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an overall schematic diagram of the intelligent dust suppression system for mining using ultrasonic dry fog negative pressure air circulation chemical wetting and condensation according to an embodiment of the present invention. Figure 2 This is a schematic diagram of a multi-technology synergistic dust suppression device for a spray dust suppression module according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of a multi-technology synergistic dust suppression device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of dust-laden airflow entraining and dust suppression when the spray dust suppression module according to an embodiment of the present invention is in operation; Figure 5 This is a schematic diagram showing the connection between the spray solvent storage tank and the stirring mixer according to an embodiment of the present invention; Figure 6 This is a schematic diagram of a laser scattering dust concentration sensor according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the internal structure of a mixer according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a mining generator according to an embodiment of the present invention; Figure 9 yes Figure 8 Enlarged schematic diagram of part A.

[0023] Figure label: Spray dust suppression module 1, multi-technology synergistic dust suppression device 110, main shell 111, partition 112, first cavity 1110, second cavity 1111, first air intake hole 1120, second air intake hole 1121, first guide plate 113, second guide plate 114, spray hood 115, water distribution pipeline 116, air supply pipeline 117, ultrasonic air atomizing nozzle 118, dustproof curtain 119, spray solvent storage tank 120, liquid level sensor 121, stirring mixer 130, stirring motor 131, output shaft 132, stirring paddle 133; Dust detection module 2; laser scattering dust concentration sensor 210; The system consists of a self-generating power supply module 3, a mining generator 310, an explosion-proof housing 311, windings 312, silicone sheets 313, a rotor core 314, a stator core 315, and an output line 316. Information control module 4, controller 410, display terminal 411, manual / automatic switching module 412; 5. Guardrail Detailed Implementation

[0024] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] The terms "first," "second," "third," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects and not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, it may include a series of steps or units, or optionally, steps or units not listed, or other steps or units inherent to these processes, methods, products, or devices.

[0028] The accompanying drawings show only the portions relevant to this application, not all of them. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe operations (or steps) as sequential processes, many of these operations may be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations may be rearranged. The process may be terminated when its operation is completed, but may also have additional steps not included in the drawings. The process may correspond to a method, function, procedure, subroutine, subprogram, etc.

[0029] The terms “component,” “module,” “system,” “unit,” etc., used in this specification are used to refer to computer-related entities, hardware, firmware, combinations of hardware and software, software, or software in execution. For example, a unit can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, a thread of execution, a program, and / or distributed between two or more computers. Furthermore, these units can be executed from various computer-readable media on which various data structures are stored. Units can communicate, for example, via local and / or remote processes based on signals having one or more data packets (e.g., data from a second unit interacting with another unit between a local system, a distributed system, and / or a network; for example, the Internet interacting with other systems via signals).

[0030] Example 1 like Figures 1 to 9 As shown, this embodiment provides a mine-use ultrasonic dry fog negative pressure air circulation chemical condensation intelligent dust suppression system, which acts on a belt conveyor in the mine, and includes: A spray dust suppression module 1 is installed above the conveying path of the belt conveyor in the mine. The spray dust suppression module 1 includes a multi-technology synergistic dust suppression device 110, a spray solvent storage tank 120, and a mixer 130. The spray solvent storage tank 120 and the mixer 130 are connected by a main pipeline, which extends into the multi-technology synergistic dust suppression device 110. A closed suction dust suppression channel is formed in the multi-technology synergistic dust suppression device 110 based on high pressure. Dust detection module 2 is installed in the conveying roadway where the belt conveyor is located in the mine to monitor the dust concentration value in the conveying roadway; The self-generated power supply module 3 has a power generation device, which is installed on the support of the mine belt conveyor. Its power source is connected to the drive motor belt of the mine belt conveyor to meet the power supply requirements of the system. An information control module 4 is installed on one side of the belt conveyor in the mine and connected to the spray dust suppression module 1 and the dust detection module 2. Based on the monitored dust concentration value, it controls and drives the spray dust suppression module 1 to operate. The information control module 4 is connected to the output terminal of the self-powered module 3. In this embodiment, the information control module 4 includes, but is not limited to, a controller 410, wherein the controller 410 is equipped with a display terminal 411 and a manual / automatic switching module 412. The controller 410 is used to receive and process signals from the dust detection module 2 and the liquid level sensor 121, realizing comprehensive linkage control of the spray dust suppression module 1, the solenoid valve, and the ultrasonic air atomizing nozzle 118.

[0031] It should be noted that, in this embodiment, the multi-technology synergistic dust suppression device 110 includes: The main housing 111 is installed above the conveying path of the mine belt conveyor and has a channel for coal blocks to enter and exit. A partition 112 is installed inside the main housing 111 to divide the cavity of the main housing 111 into a first cavity 1110 and a second cavity 1111. The partition 112 is provided with a plurality of first air intake holes 1120 and second air intake holes 1121 are provided on both sides of the partition 112. Two first guide plates 113 are symmetrically arranged about the center line of the partition 112. Each first guide plate 113 obliquely penetrates the partition 112 and is disposed in the first cavity 112 and the second cavity 113. There is a gap between the ends of the first guide plates 113 that are close to the center line of the partition 112. Two second guide plates 114 are respectively installed on the partition plate 112 between the first air intake hole 1120 and the second air intake hole 1121. The second guide plates 114 are located in the second cavity 1111, and are arranged in a symmetrical double-wing structure with enough space for coal blocks to pass through, in order to guide the turbulence aroused by the high-pressure spray. Multiple spray nozzles 115, each spray nozzle 115 is correspondingly installed on the partition 112 surrounding the first air intake 1120; Multiple water distribution pipes 116, one end of which passes through the gap and connects to the main pipe connecting to the outlet of the mixer 130, and the other end extends through the first air suction hole 1120 and enters the spray hood 115; Gas supply line 117 has one end connected to the main gas supply line of the roadway, and the other end extends into the main housing 111. Multiple ultrasonic air atomizing nozzles 118 are installed correspondingly in the water distribution pipe 116 and the air supply pipe 117. The ultrasonic air atomizing nozzles 118 work together to release spray solvent, generating atomized droplets with a particle size distribution in the range of 10μm to 60μm. Droplets within this particle size range can significantly improve the capture probability of micron-sized respirable dust; that is, the droplet wetting and encapsulation effect is optimal when the particle size ratio is 2-3. Its working principle is as follows: the high-frequency mechanical energy generated by ultrasonic oscillation acts on the liquid surface, causing the liquid to split into fine droplets, and a composite atomization effect is formed through compressed air jets, thereby achieving droplet refinement. Dustproof curtains 119 are installed at the inlet and outlet of the main housing 111, forming a closed dust suppression channel with the main housing 111. Specifically, dustproof curtains 119 are installed at both the coal inlet and outlet. The dustproof curtains 119 are connected to the multi-technology collaborative dust suppression device 110 by riveting. When the coal is transported by belt conveyor, the dust at the coal outlet can be adhered and detached, realizing non-powered dust removal.

[0032] The spray solvent carried in the ultrasonic micro-mist is fully diffused by the airflow during the spraying process. Droplets combine with suspended dust particles through a combination of mechanisms, including inertial collision, Brownian diffusion, and electrostatic adsorption, causing the dust particles to rapidly agglomerate, increase in weight, and settle. The spray solvent, containing surfactants and film-forming agents, forms a dust-suppressing film on the material surface, which inhibits secondary dust generation during subsequent transportation and drop operations. By combining the efficient droplet atomization of the ultrasonic micro-mist with the surface film-forming effect of chemical dust suppressants, the entire process of dust control—from air suspension to surface fixation—is achieved, significantly improving the overall dust suppression efficiency and duration in the conveying roadways where belt conveyors are located in mines.

[0033] It should be noted that, in this embodiment, the ultrasonic air atomizing nozzle 118 is fixedly connected to the water distribution pipe 116 and the air supply pipe 117. The water distribution pipe 116 is connected to the main pipe, and the main pipe is fixedly connected to the mixer 130 via a straight connector. The air supply pipe 117 is connected to the first solenoid valve, and the first solenoid valve is fixedly connected to the main air supply pipe of the roadway.

[0034] It should be noted that, in this embodiment, the end of the first guide plate 113 near the center line of the partition 112 has an arc-shaped portion. The arc-shaped portion has a curved surface that deviates from the partition 112, so as to guide the dust-laden airflow flowing out from the second cavity 113 under the negative pressure suction to smoothly enter the first suction hole 1120 for secondary dust reduction and negative pressure air circulation.

[0035] It should be noted that in this embodiment, the two second guide plates 114 are inclined to the partition plate 112 and symmetrically arranged about the center line of the partition plate 112. The two second guide plates 114 divide the upper partition plate 112 into three parts. The two sides of the partition plate 112 each have rectangular air intake holes measuring 80mm × 800mm, and the middle part has three circular air intake holes with a diameter of 70mm, spaced 300mm apart and centrally distributed. The spray hood 115 is fixed to the bottom of the partition plate 112 by welding. The upper circular opening of the spray hood 115 has a diameter of 70mm, and the lower wide opening has a diameter of 100mm. The spray hood 115 contains an ultrasonic air atomizing nozzle 118 with a forward extension distance of 30mm, and the nozzle is positioned at the exact center of the spray hood 115, fixed above the partition plate 112 by a steel structure.

[0036] The spray hood 115 and the ultrasonic air atomizing nozzle 118 work together to ensure that the nozzle's spray angle fully covers the air outlet of the spray hood 115, avoiding incomplete coverage or reduced spray range. Therefore, the nozzle extension distance is fixed according to the characteristics of the ultrasonic air atomizing nozzle 118, and the extension distance includes, but is not limited to, 30mm. This creates a large negative pressure field in the first cavity 1110, greatly enhancing the negative pressure suction effect. The air intake holes on both sides of the middle partition plate draw air upwards from the areas on both sides of the second guide plate 114 in the second cavity 1111, including the turbulence agitated by the high-pressure spray and the surrounding dust-laden air. The further entrained airflow re-enters the lower spray dust suppression zone, achieving secondary dust suppression and negative pressure air circulation. The entire process forms a closed dust suppression channel of "airflow entrainment - atomization capture - self-circulation purification".

[0037] It should be noted that, in this embodiment, the height of the second guide plate 114 is lower than the height of the spray hood 115, which facilitates the formation of a negative pressure suction field on the outside of the second guide plate 114 and the inside of the first guide plate 113 under the action of high pressure airflow, which is more conducive to secondary dust reduction and negative pressure air circulation of the dust-laden airflow at the channel inlet and outlet and the inside of the second guide plate 114.

[0038] It should be noted that, in this embodiment, the spray solvent storage tank 120 has a built-in liquid level sensor 121, which is connected to the information control module 4 and is used to detect the content of concentrated spray solvent in the spray solvent storage tank 120 to ensure sufficient spray solvent.

[0039] Specifically, the spray solvent storage tank 120 is provided with a liquid filling port at the top and a liquid outlet at the bottom and is supported by a support column on the outside. The liquid outlet is connected to a second solenoid valve, which is fixedly connected to a three-way pipe.

[0040] It should be noted that, in this embodiment, the stirring mixer 130 includes: A stirring motor 131 is mounted on the top of the housing of the stirring mixer 130; The stirring paddle 133 is fixedly connected to the output shaft 132 of the stirring motor 133.

[0041] Specifically, the bottom of the mixer 130 is connected to the main water supply pipeline of the tunnel via a T-junction.

[0042] It should be noted that, in this embodiment, the dust detection module 2 includes a laser scattering dust concentration sensor 210, which is installed in the conveying roadway where the belt conveyor is located in the mine, to monitor the dust concentration value in the conveying roadway.

[0043] A multi-directional real-time detection network is formed by installing laser scattering dust concentration sensors 210 in the conveyor roadway where the belt conveyor is located in the mine. This sensor operates based on the principle of light scattering, calculating the dust concentration value by measuring the intensity of light scattered by dust particles onto a laser beam. When the dust concentration exceeds a set threshold, the electrical signal output by the laser scattering dust concentration sensor 210 is transmitted to the information control module 4, where it performs signal analysis and logical judgment. The information control module 4 automatically triggers the start / stop command of the spray dust suppression module 1 based on the changing trend of the detected signal, achieving on-demand spraying and precise dust suppression. To prevent energy waste and equipment wear caused by frequent system start / stop, the information control module 4 is equipped with a dust concentration lag range and a delayed feedback mechanism to ensure the stability and economy of system operation.

[0044] It should be noted that, in this embodiment, the power generation device of the self-powered module 3 includes: A support frame is installed on the frame of the mine belt conveyor; The mining generator 310 is installed on the support frame and generates electricity by being driven by a belt. Its principle is electromagnetic induction power generation.

[0045] Specifically, the mining generator 310 is enclosed by an explosion-proof housing 311 that contacts the inner side of the lower belt. The explosion-proof housing 311 contains a winding 312 to form an energy transmission channel. A silicone sheet 313 is embedded in the winding 312 to reduce hysteresis losses. The silicone sheet 313 is internally composed of a rotor core 314 and a stator core 315. At the center of the rotor core 314 and stator core 315 is an external output line 316 for the power output section. This output line 316 is connected to the signal control module 4 to supply power for the coordinated operation of various parts of the system.

[0046] The intelligent dust suppression system for mining applications using ultrasonic dry fog negative pressure air circulation chemical wetting and condensation, according to the present invention, has the following beneficial effects: 1. By combining ultrasonic atomization technology with chemical dust suppressants, ultrafine droplets with a particle size of 10μm to 60μm are formed, significantly improving the capture efficiency of micron-sized respirable dust. Simultaneously, the chemical dust suppressant carried by the droplets, upon contact with dust particles, achieves efficient transformation of dust from a suspended phase to a solid phase through multiple mechanisms, including surface wetting, agglomeration, and chemical film solidification. A dust-suppressing film forms on the surface of the sprayed material, effectively preventing secondary dust generation, enhancing dust suppression persistence, reducing water consumption, and achieving dynamic suppression of coal dust throughout the entire process.

[0047] 2. Employing a double-layer semi-enclosed cavity structure and combining it with the principle of negative pressure suction, the system actively guides dust-laden gas from the surrounding roadway into the atomization zone during the spray dust suppression process, achieving localized air self-circulation and purification. The negative pressure airflow not only effectively prevents dust spillage but also re-draws the turbulence generated by the spray into the system, reducing the interference of airflow on the droplet trajectory and increasing the probability of collision with dust particles.

[0048] 3. By collecting dust concentration signals in real time, the spray system can automatically start and stop and adjust the flow rate. When the dust concentration exceeds the set threshold, the system automatically starts the spray execution unit and sprays the spray solvent as needed; when the dust concentration returns to below the safe value, the system automatically stops spraying, achieving the dual purpose of energy saving and precise dust suppression. The self-powered system provides energy to the control module through induction generation, enabling the various parts to work together organically and ensuring that the entire system operates efficiently, stably, and reliably.

[0049] Example 2 This embodiment, based on Embodiment 1, provides a mining ultrasonic dry fog negative pressure air circulation chemical condensation intelligent dust suppression system, which also includes: Guardrail 5 is installed at the edge of the support of the belt conveyor in the mine to prevent materials from leaving the belt conveyor range during transportation and causing potential hazards to the equipment and pedestrians on the pedestrian side.

[0050] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 the invention.

[0051] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," 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 the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0052] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0053] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A mine ultrasonic dry fog negative pressure gas circulation chemical condensation intelligent dust suppression system, acting on the belt conveyor in the mine, characterized in that, The application relates to a dust suppression device for a mine belt conveyor. The dust suppression device comprises a spray dust suppression module (1) installed above the conveying path of the mine belt conveyor, a dust detection module (2) installed in the conveying roadway of the mine belt conveyor, a self-powered module (3) with a power generation device installed on the support of the mine belt conveyor, and an information control module (4) installed on one side of the mine belt conveyor. The spray dust suppression module (1) comprises a multi-technology dust suppression device (110), a spray solvent storage tank (120) and a stirring mixer (130). The dust detection module (2) is used for monitoring the dust concentration in the conveying roadway. The self-powered module (3) is connected with the driving motor belt of the mine belt conveyor.

2. The intelligent dust suppression system of claim 1, wherein, The information control module (4) is connected with the spray dust suppression module (1) and the dust detection module (2) and controls the driving of the spray dust suppression module (1) based on the monitored dust concentration. The multi-technology dust suppression device (110) comprises a main shell (111), a partition plate (112), two first guide plates (113), two second guide plates (114), a plurality of spray covers (115), a plurality of water distribution pipelines (116), a gas supply pipeline (117) and a plurality of ultrasonic air atomizing nozzles (118). The main shell (111) is installed above the conveying path of the mine belt conveyor and has a passage for the entry and exit of coal blocks. The partition plate (112) is installed in the main shell (111) and divides the cavity of the main shell (111) into a first cavity (1110) and a second cavity (1111). The two first guide plates (113) are symmetrically arranged about the center line of the partition plate (112) and each first guide plate (113) penetrates the partition plate (112) and is arranged in the first cavity (112) and the second cavity (113). The two second guide plates (114) are arranged on the partition plate (112) between the first air suction hole (1120) and the second air suction hole (1121). Each spray cover (115) is arranged on the partition plate (112) surrounding the first air suction hole (1120). One end of each water distribution pipeline (116) is connected with the main pipeline connected with the outlet of the stirring mixer (130) and the other end of each water distribution pipeline (116) extends through the first air suction hole (1120) into the spray cover (115). One end of the gas supply pipeline (117) is connected with the roadway gas supply pipeline and the other end of the gas supply pipeline (117) extends into the main shell (111). Each ultrasonic air atomizing nozzle (118) is arranged on the water distribution pipeline (116) and the gas supply pipeline (117). A dustproof curtain (119) is installed at the entrance and exit of the passage of the main shell (111) to form a closed dust falling passage with the main shell (111).

3. The intelligent dust suppression system of claim 2, wherein, The end of the first flow guide plate (113) near the center line of the partition plate (112) has an arc-shaped part which is offset from the curved surface of the partition plate (112).

4. The intelligent dust suppression system of claim 2, wherein, The two second flow guide plates (114) are obliquely arranged with the partition plate (112) and symmetrically arranged about the center line of the partition plate (112).

5. The intelligent dust suppression system of claim 2, wherein, The height of the second flow guide plate (114) is lower than the height of the spray cover (115).

6. The intelligent dust suppression system of claim 1, wherein, The spray solvent storage tank (120) is provided with a liquid level sensor (121) connected with the information control module (4).

7. The intelligent dust suppression system of claim 1, wherein, The stirring mixer (130) comprises: A stirring motor (131) is installed at the top of the shell of the stirring mixer (130); A stirring paddle (133) is fixedly connected with the output shaft (132) of the stirring motor (133).

8. The intelligent dust suppression system of claim 1, wherein, The dust detection module (2) comprises a laser scattering dust concentration sensor (210) installed in the conveying roadway where the underground belt conveyor is located to monitor the dust concentration value in the conveying roadway.

9. The intelligent dust suppression system of claim 1, wherein, The power generation device of the self-powered module (3) comprises: A support frame is installed on the frame of the underground belt conveyor; A mine generator (310) is installed on the support frame.

10. The intelligent dust suppression system of claim 1, wherein, Further comprising: A protective fence (5) is installed at the edge of the support frame of the underground belt conveyor.

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