204 results about "Coal mine dust" patented technology

The invention discloses a coal mine dust diffusion simulation and control method based on artificial intelligence, and relates to the technical field of coal mine dust diffusion simulation and control, and the method comprises the following steps: collecting environmental data such as dust concentration, ventilation flow velocity, temperature, humidity and equipment operation state through a monitoring system in a coal mine; and cleaning and formatting processing are carried out in combination with historical working condition data. According to the method, reinforcement learning and virtual extreme scene simulation are utilized, the recognition and emergency response capability of the system to edge working conditions is improved, dust diffusion and explosion risks are effectively reduced, and mine safety is guaranteed. By dynamically adjusting the ventilation and water spraying system, efficient utilization of resources is achieved, energy consumption and operation cost are reduced, and the service life of equipment is prolonged. The system has an adaptive learning capability, can optimize a control strategy according to monitoring data and historical events, can automatically adjust even if the environment changes, improves robustness and flexibility, and reduces manual intervention.

The invention discloses a coal mine dust diffusion intelligent monitoring method based on a distributed sensing network, and relates to the technical field of coal mine dust diffusion intelligent monitoring, and the method comprises the following steps: deploying a plurality of sensing nodes in a coal mine, each node having a function of collecting environmental data, a distributed sensing network is formed through a wireless or wired communication module, and when all nodes are started, a unique node identifier is issued through a central controller, and self-inspection is carried out. Through bidirectional delay calculation and a progressive fine tuning strategy, high-precision time synchronization is achieved, and it is ensured that timestamps of data such as dust concentration and airflow are accurate and reliable. And data jump caused by large correction is avoided through gradual fine adjustment, data continuity is guaranteed, and the precision of dust diffusion analysis and an early warning model is improved. A redundant node management and automatic switching mechanism improves the fault processing capability of the system, avoids a monitoring blind area, accelerates maintenance response through fault information reporting, and ensures stable operation of a monitoring network.

The invention relates to the technical field of coal mine safety monitoring, in particular to an underground coal mine dust concentration monitoring method and system based on multi-modal data fusion, and the method comprises the steps: synchronously collecting dust concentration time sequence data, dust image data, sound wave signal data and environmental parameters through a multi-modal sensor array deployed in an underground coal mine; carrying out preprocessing and feature extraction on the collected data; predicting the decomposed high-frequency and low-frequency component signals by adopting a long short-term memory neural network and a grey Markov model; when the environment humidity is greater than 80%, carrying out light scattering compensation on the predicted value; inputting various predicted values into an improved D-S evidence theory fusion device, and outputting a fusion dust concentration monitoring value; and when the threshold value is exceeded or the temperature and humidity composite condition is reached, an acousto-optic alarm is triggered and a spraying dust-settling device is started. According to the method, the problems of low precision of a single sensor, multi-source data conflict, high-humidity environment measurement deviation and insufficient time sequence and fusion precision in underground coal mine dust concentration monitoring can be solved.

The invention relates to the technical field of mine environmental protection and intelligent control, and discloses an intelligent dust suppression system and method for an open-pit coal mine, which are used for solving the problems of fixed spraying mode, poor real-time performance and waste of water resources in the dust suppression process of the open-pit coal mine. According to the intelligent dust suppression system and method for the open pit coal mine, a dust concentration sensor, a wind speed and direction sensor and a meteorological sensor are arranged in a mining area, real-time monitoring of a dust diffusion source and environmental parameters is achieved in combination with a video monitoring unit, and multi-source data are fused in a control system for diffusion trend prediction; according to the method, a dust high-risk area can be dynamically identified, then a targeted spraying strategy is generated according to a prediction result, and accurate control over the spraying position, the spraying time and the spraying flow is achieved, so that the problems that in the prior art, a spraying operation mode is fixed and is difficult to adapt to environmental changes are solved, the water consumption per unit time is reduced, and the working efficiency is improved. The air quality of an operation area is guaranteed, and the operation environment safety and the environmental protection standard-reaching rate are improved.

The invention relates to a coal mine wet dust collector applied to the technical field of coal mine dust removal, which comprises a Venturi tube, a rotational flow mechanism, a purification chamber and a dust removal intelligent controller, the rotational flow mechanism comprises a driving part mounted at the lower part of an inner cavity of the Venturi tube, a rotational flow net disc mounted in the circumferential direction of an output shaft of the driving part, and a pressure sensor mounted between the rotational flow net disc and the output shaft of the driving part; a dust treatment module, a rotational flow treatment module and a sludge treatment module are arranged on the dust removal intelligent controller, and by adopting the structure, a mixture of dust and water mist is intercepted by the rotational flow net disc rotating at a high speed when entering the bottom of the Venturi tube, so that the dust removal filtering efficiency is improved; by arranging the dust removal intelligent controller, the sludge pollution condition of the rotational flow net disc can be conveniently and automatically detected, the rotational flow net disc is automatically cleaned and flushed, the service life of equipment is prolonged, the maintenance period is shortened, automatic pollution discharge is achieved, and the dust remover is more automatic and intelligent.

The invention relates to the technical field of mine ventilation equipment, and discloses coal mine dust removal ventilation equipment which comprises an air pipe, an air draft assembly used for air draft is arranged at the top of a bottom plate of an inner cavity of the air pipe, a collecting assembly used for dust removal is arranged in the air pipe, and the collecting assembly comprises a lower baffle and an upper baffle. The lower baffle and the upper baffle are fixed to one side of a bottom plate and one side of a top plate of an inner cavity of the air pipe correspondingly, an air cylinder is fixed to the surface of the middle position of the upper baffle, an output shaft of the air cylinder penetrates through the top of the air pipe, a linkage plate is rotationally connected to the top of the output shaft of the air cylinder, and a magnetic sheet set is inlaid in the bottom of the linkage plate. According to the exhaust fan, the activated carbon box set is arranged in the air pipe, when the exhaust assembly conducts exhaust type ventilation, after air enters the air pipe, dehumidification and dust removal are conducted through activated carbon particles in the activated carbon box set, the influence of dust and moisture on an impeller of the exhaust fan is reduced, and then the ventilation efficiency of the exhaust fan is improved.

The invention discloses a coal mine dust concentration real-time monitoring method based on big data analysis, and relates to the technical field of coal mine dust concentration monitoring, and the method comprises the following steps: obtaining various parameter information generated in the data fusion process of a big data system in real time, including transient response information and time synchronization information, and analyzing and processing the obtained transient response information and the time synchronization information. According to the method, the transient deviation index and the phase error index are introduced, the data fusion process is intelligently evaluated in combination with the machine learning model, the error problem caused by the sensor response time difference is solved, and multi-level intelligent sensing is achieved. The system accurately judges the risk level, reduces false alarm and missing alarm, takes maintenance, adjustment or emergency intervention measures corresponding to different risks through a grading early warning mechanism, remarkably improves the coal mine monitoring safety, and reduces the accident risk.

The invention relates to a fully mechanized coal mining face respirable dust concentration management limit value determination method, belongs to the technical field of coal mine dust treatment, and is used for solving the problem of inaccurate respirable dust control caused by the fact that a traditional fixed threshold value cannot adapt to a multi-dust-source coupling working condition. The method comprises the following steps: acquiring dust falling efficiency data of multiple dustproof measures, establishing a mathematical model of dustproof parameters and dust concentration, calculating a dynamic management limit value by combining an industrial standard threshold value, and performing self-adaptive adjustment by monitoring and triggering parameters such as spraying pressure and dust removal air volume in real time. Compared with a traditional method, the dynamic limit value enables the respirable dust concentration to be reduced by 40% or above, the multi-measure cooperative dust falling efficiency is improved to 85%, water is saved by 15%-20%, the equipment energy consumption is reduced by 10%, and intelligent and precise dust treatment is achieved.

The invention provides an underground coal mine dust falling device and a using method thereof, and belongs to the technical field of coal mine dust falling. According to the technical scheme, the underground coal mine dust falling device comprises a water storage tank, a water outlet of the water storage tank is communicated with a water inlet of a water pump, a water outlet of the water pump is communicated with a hard pipe, and the hard pipe is sleeved with a supporting frame; a rotating mechanism is arranged on the outer side of the hard pipe, and a lifting mechanism and an adjusting mechanism are arranged on the supporting frame. According to the using method of the underground coal mine dust falling device, the rotating mechanism controls the hard pipe, the supporting frame and the spray head to rotate synchronously, the lifting mechanism controls the supporting frame to drive the spray head to slide up and down along the hard pipe, and the adjusting mechanism controls the spraying angle of the spray head. The device has the beneficial effects that the nozzle can flexibly move in the horizontal direction and the vertical direction, it is guaranteed that close-range space under the device and the periphery of the device are covered by water mist without dead angles, and dust falling blind areas are eliminated.

The invention relates to the technical field of coal mine underground dust prevention and control, in particular to a coal mine dust concentration over-limit spraying and dust-settling device and a control system thereof.The coal mine dust concentration over-limit spraying and dust-settling device comprises a dust sensing array composed of a plurality of dust concentration sensors arranged in a spatially separated mode, a main sensor arranged close to a dust generation source, and a dust concentration sensor arranged close to the dust generation source, the at least two auxiliary sensors are sequentially arranged at a set interval; the wind speed sensing unit is mounted in a preset range of the upwind direction of the main sensor and is used for synchronously capturing real-time wind speed; the partition spraying actuator comprises independent spraying units corresponding to the positions of the sensors, and each unit is provided with a quick-response electromagnetic valve and an atomizing nozzle; the multi-source information fusion controller is connected with the dust sensing array, the wind speed sensing unit and the partition spraying actuator through an industrial field bus; through dynamic threshold setting, dust diffusion path monitoring and prediction interception technologies, the problems of response lag and excessive spraying of a traditional fixed threshold system are solved.

The invention relates to a long-pressure short-pumping dust removal system for a fully-mechanized excavation face of a coal mine with self-adaptive matching parameters, and belongs to the technical field of coal mine dust prevention. In order to solve the problems of parameter matching lag, air duct positioning misalignment and emergency response delay of an existing dust removal system, a dust concentration sensor, a gas sensor, a laser distance measuring sensor and an area controller cooperate to construct a dynamic matching model of the press-in air volume, the dust suction air volume and the wall-attached air duct distance; + / -0.2 m high-precision positioning is realized by adopting a servo traction mechanism, and air distribution is adjusted in real time in combination with a nonlinear control algorithm. According to the system, the dust removal efficiency is improved to 85% or above, the gas standard exceeding response time is shortened to be within 90 seconds, the positioning error is reduced by 80%, the fan energy consumption is reduced by 18%-22%, and efficient and safe production of a coal mine is effectively guaranteed.

The invention belongs to the technical field of environmental protection, and particularly relates to a coal mine dust removal device which comprises an air inlet pipe, the air inlet pipe is transversely arranged and comprises a main body part, an air inlet part and a flow slowing part, the air inlet part and the flow slowing part are arranged at the two ends of the main body part respectively, and the flow slowing part is larger than the main body part in size; the spiral blade is eccentrically arranged in the main body part in the axial direction, the bottom of the spiral blade is in clearance fit with the bottom of the main body part, the spiral blade is driven by a power mechanism to rotate, and the conveying direction of the spiral blade is consistent with the airflow direction in the main body part; the connecting pipe is close to the flow slowing part, is arranged above the main body part and is perpendicular to the main body part, and a filtering mechanism is transversely arranged in the connecting pipe; the air outlet pipe is connected to one end of the connecting pipe, and an induced draft fan is arranged in the air outlet pipe; and the dust collection bin is arranged below the slow flow part in a communicating manner. The spiral blade is eccentrically arranged, the airflow direction can be changed through the spiral blade, and the problem of blockage caused by accumulation of solid particles in the air inlet pipe can be solved.

The invention discloses a coal mining machine dust source tracking intelligent dust removal method and system integrated with a hydraulic support, and belongs to the technical field of coal mine dust removal. The system comprises a wet dust collector arranged on the inner side of a hydraulic support shield beam, a telescopic air duct on a top beam and a control system. The wet dust collector is connected with the telescopic air duct through a dust suction pipeline arranged in the support, and a dust suction opening of the telescopic air duct is driven by the lifting mechanism to ascend and descend and suck dust dynamically along with a roller of the coal mining machine. The control system obtains position signals of the coal mining machine, adjusts the position of a dust suction opening and controls the dust remover to be started and stopped, and precise dust source treatment is achieved. According to the method, the dust source is tracked circularly by recognizing the coal cutting state of the coal cutter and dynamically adjusting the height of a dust suction inlet and operation of a fan. The support structure is used for protecting equipment from being smashed and damaged, the device adapts to thin and medium-thickness coal seam space, the dust removal efficiency and reliability are remarkably improved, the dust concentration and the maintenance cost are reduced, miner health and operation safety are guaranteed, and wide application prospects are achieved.

The invention belongs to the field of coal mine dust removal, and relates to a coal mining machine onboard integrated efficient dust remover and a filtering method thereof, an air inlet, a nozzle, a multi-stage filter screen, a corrugated plate demister, a centrifugal fan and other components are integrated to form an efficient dust removal system. During operation, dust-containing air enters through the air inlet, water mist is sprayed out of the nozzles to preliminarily wet dust, and then the dust with different particle sizes is effectively captured through multi-stage filtration of the coarse-efficiency filter screen, the medium-efficiency filter screen and the high-efficiency filter screen. And then the air is dehydrated by a demister, and clean air is discharged by a centrifugal fan. The equipment is provided with a dust cleaning brush and a differential pressure sensor, the filter screen can be automatically cleaned, and the filtering effect is guaranteed. The system has the advantages of efficient dust fall, water saving, environmental protection, intelligent monitoring, compact structure and convenient maintenance, can obviously reduce the dust concentration of the working face, improves the working environment, ensures the health of miners, and is a preferable scheme for dust control of the fully mechanized coal mining working face.

The invention relates to the technical field of coal mine dust fall, in particular to a mining wireless spraying dust fall control method and device, a medium and a product, and the method comprises the steps that key dust fall information analysis is carried out based on coal mine production information, and a key dust fall area and key dust fall time are determined; and then, carrying out timed spraying planning based on the key dust falling area and the key dust falling time, determining a spraying period, and controlling the spraying dust falling device to start spraying according to the spraying period. And then, emergency dust fall analysis is carried out based on the dust information, an emergency dust fall analysis result is determined, and when the emergency dust fall analysis result is that emergency dust fall is started, intelligent induction adjustment analysis is carried out based on the dust information and the wind power information, and the emergency spraying dust fall device is controlled to carry out emergency dust fall operation according to the emergency spraying information. Through intelligent induction and adjustment, the spraying and dust falling device can be started or adjusted in time according to the actual dust concentration, it is ensured that the dust concentration is rapidly reduced when the dust concentration exceeds the standard, and the dust falling effect is improved.

The present invention belongs to the technical field of coal mine dust control. It relates to a coal mining machine annular drum tracking spray dust reduction device, including an annular sprayer, an adjustable telescopic bracket, a pulley, a pulley mounting seat, a pull rope, and a support seat; the annular sprayer is arranged at one end of the adjustable telescopic bracket and is located on the outside of the coal machine drum; the other end of the adjustable telescopic bracket is rotatably connected to the support seat; the pulley is arranged on the outer shell of the coal machine drum motor, and the adjustable telescopic bracket is hoisted on the pulley through a pull rope; when the coal machine drum swings up and down, the pulley cooperates with the pull rope to drive the adjustable telescopic bracket to swing, so that the position of the annular sprayer changes dynamically with the coal machine drum. The present invention utilizes the flexibility of the pull rope and the motion relationship between the two swinging mechanisms to cleverly realize the dynamic tracking of the dust reduction device with the coal machine drum. At the same time, the sprayer is arranged in an annular manner, and the spray forms an annular water curtain, which can cover the coal machine drum in all directions to prevent coal dust from escaping.

The utility model discloses a coal mine fire safety intelligent early warning control module, which belongs to the technical field of coal mine fire safety early warning and comprises a temperature monitoring unit, a gas monitoring unit, a dust monitoring unit, an underground looped network switch, a ground control device and an alarm device. The temperature-sensing optical fibers comprise a distributed temperature-sensing optical fiber host and distributed temperature-sensing optical fibers, and the distributed temperature-sensing optical fibers are laid in the transmission belt and the goaf and can monitor the temperatures of different areas in the mine in real time; the gas monitoring unit comprises a toxic gas monitoring subunit and an inflammable gas monitoring subunit, and can monitor the content of various gases in the mine; according to the coal mine dust monitoring system, the safety of coal mine operation is improved, the safety of workers and equipment is guaranteed, and smooth proceeding of coal mine production and operation is effectively promoted.

The invention discloses a dust blocking method for a working space of fully-mechanized face personnel, and belongs to the technical field of coal mine dust treatment. The invention provides a comprehensive blocking scheme for solving the problems that in the prior art, fully-mechanized face dust is high in concentration and serious in diffusion, and workers are prone to suffering from pneumoconiosis. According to the method, a wireless dust source tracking spraying device is arranged on the outer side of a coal mining machine, and dust generated by coal cutting is settled and guided; a coal mining area and a personnel activity area are physically separated by utilizing an efficient dust blocking and isolating device on the hydraulic support; a negative-pressure micro-mist dust remover is arranged in front of a stand column of a top beam of the support to suck and purify dust near the top beam; and a support dust receiving device is installed on the hydraulic support and used for collecting dust generated by descending the column and moving the support. The method can effectively reduce the dust concentration in the working space of workers on the fully-mechanized coal mining face, reduces the risk of pneumoconiosis of miners, and provides convenience for source-divided and domain-divided treatment of dust on the fully-mechanized coal mining face.

The invention relates to an experimental device for simulating a dust removal effect in a coal mining process. The experimental device structurally comprises an air inlet section, a working simulation section and an exhaust section which are sequentially connected in the direction from air inlet to air outlet, the air inlet section is provided with an air inlet bin, a grid, a heater, a humidifier and a hygrothermograph; the working simulation section is provided with a working bin, a dust simulation device, a spraying device and a monitoring device; the exhaust section is provided with a contraction opening, an axial flow fan, a bag type filter and a ventilation pipeline. According to the experimental device, the dust removal effect is monitored and evaluated in real time by simulating the dust generation condition in the coal mine working environment, combining the implementation of dust control measures and reasonably arranging the mine environment simulation device, the dust simulation device, the spraying device, the dust monitoring device and the exhaust system; therefore, reliable experimental data support is provided for optimization of a coal mine dust control technology.

The utility model relates to a coal mining dustproof net which comprises a flexible net, and the flexible net comprises a flexible plastic woven net and a cotton woven net attached to the flexible plastic woven net. The flexible net is provided with a water supply fixing frame mechanism used for supporting, fixing and soaking in water for wetting. The water supply fixing frame mechanism wets the flexible net to form a flowing water film, and the dustproof effect is improved. And a cleaning assembly for cleaning attached coal mine dust is arranged on the flexible net. According to the dust-proof net for coal mining, the arranged water supply fixing frame mechanism is matched with the cotton woven net and the cotton strips, it is guaranteed that water evenly permeates into the cotton woven net to form a water film to be attached to dust in air, and the attached dust is cleaned through the arranged cleaning assembly; and the water is discharged to the filtering and deslagging structure along with the water to be filtered, so that the water is recycled, and the dustproof effect is improved while resources are saved.

The invention discloses a water power negative pressure dust removal device of a coal machine, and belongs to the technical field of coal mine dust removal. Comprising a fixing box, a jet flow assembly and a filtering assembly are installed on the fixing box, the filtering assembly comprises an outer pipe installed on the fixing box, a filtering cylinder is fixedly installed in the outer pipe, the filtering cylinder divides the outer pipe into an outer cavity and an inner cavity, a liquid outlet of the jet flow assembly communicates with the inner cavity, and a supporting shaft is rotationally connected to the outer pipe; an impeller and a driving assembly are installed on the supporting shaft. The jet flow assembly generates negative pressure to suck coal dust, the coal dust is mixed with jet flow water and impacts on the impeller to drive the impeller to rotate, the impeller rotates to stir mixed liquid to the filter cartridge to accelerate filtration, meanwhile, the driving assembly is driven to operate, and the driving assembly sucks filtered water in the outer cavity and sprays the filtered water out through the multiple communicated atomization nozzles. Good dust removal and dust falling effects are achieved.

The invention relates to a simulation method and device for a hydraulic support column descending and support moving dust production migration rule, and belongs to the technical field of coal mine dust control. In order to solve the problems that the prediction error of an existing model exceeds 40%, the migration path deviation exceeds 50%, the side seam adjusting precision of the device is + / -20 mm, and the dust falling efficiency fluctuates by 35%, a multi-factor coupling modeling and intelligent dynamic regulation and control technology is provided. The method comprises the following steps: constructing a dust production prediction model of coal rock hardness, water content, roof pressure bearing and side seam spacing coupling, monitoring dust distribution in real time by adopting a laser scattering sensor and a particle size spectrometer array, designing a high-precision electric push rod to adjust the side seam spacing to + / -0.5 mm, and dynamically correcting an error in combination with Kalman filtering. The device comprises an adjustable support assembly, a triaxial pressure loading module and an intelligent verification system. The dust production prediction error is 9.8%, the migration deviation is 14.6%, the adjusting efficiency is improved by 3.2 times, the dust falling fluctuation is compressed to 7.9%, and the respiratory dust inhibition rate reaches 85.4%.

The invention belongs to the field of coal mine dust falling, and particularly relates to a composite coal dust suppressant spraying system and application thereof. The composite coal dust suppressant spraying system comprises a spraying unit and a dust suppressant solution, the spraying unit comprises a water storage tank, a high-pressure water pump and a wide-angle solid nozzle, the dust suppressant solution at least comprises alkylphenol polyoxyethylene ether and xanthan gum, and the dust suppressant solution is provided with a three-dimensional network structure used for filling coal dust particle gaps. By changing a spraying medium and adding materials into water, the characteristics of wetting, bonding, agglomeration and the like are improved, the composite dust suppressant with an energy-shaped three-dimensional network structure is developed, and a composite dust suppressant spraying system with the wettability, the water retention and the wind erosion resistance cooperatively improved is provided, so that the spraying and dust falling efficiency of a coal mine is improved, and the dust suppression effect is improved. And the problem of reentrainment of dust is solved.

The invention relates to a fully mechanized coal mining face dust distribution spatio-temporal evolution prediction method and system based on multi-dust-source coupling, and belongs to the technical field of coal mine dust treatment and intelligent prediction. Aiming at the problems of insufficient quantification of multi-dust-source interaction, lack of respirable dust monitoring and low prediction model precision in the prior art, the invention provides the following scheme: constructing a coal cutter coal cutting dust production model and a hydraulic support moving dust production model, and fusing coal rock crushing characteristic parameters and equipment working condition parameters; establishing a dust migration numerical model based on a Navier-Stokes equation and a discrete phase model; calibrating model parameters in real time through a distributed sensor network; and generating a respiratory zone height dust spatio-temporal evolution graph and driving an intelligent dustproof system. The method has the effects that the dust concentration prediction error is reduced from 40% to 12-15%, and the dust source positioning error lt is reduced; the dust falling efficiency is improved by 30%, the water is saved by 22%, and the device is suitable for the scene with the mining height of 3-8 m and the wind speed of 0.5-3.0 m / s.

The utility model discloses a coal mine dust ventilation system which comprises a ventilation box provided with an air inlet and an air outlet, and is characterized in that a cyclone separator and a filter pipe are arranged in the ventilation box, an air inlet pipe of the cyclone separator is communicated with the air inlet, an air outlet pipe of the cyclone separator is communicated with the filter pipe, and the filter pipe is communicated with the air outlet; a filter screen frame and blades are sequentially arranged in the filter pipe in the airflow direction of the air outlet, a rotating shaft is connected to a blade shaft, a filter screen is arranged on the filter screen frame, a circular ring is arranged in the center of the filter screen frame, cross rods connected with the filter screen frame are arranged on the two sides of the circular ring respectively, and a boss is arranged on the inner wall of the circular ring; when the blades rotate, the blade shaft drives the rotating shaft to rotate, and then the protruding block is driven to intermittently touch and jack up the boss, so that the filter screen continuously vibrates. According to the scheme, the problems that a filter screen of a traditional ventilation system is prone to being blocked and cannot be automatically cleaned are solved.

The invention relates to a fully-mechanized face multi-angle blowing-suction purification dust removal system and a dust removal method, and belongs to the technical field of coal mine dust treatment. Comprising a dust concentration sensor arranged on a hydraulic support and a linear dust remover arranged on a hollow interlayer of a chute baffle of the scraper conveyer. The dust concentration sensor detects the dust concentration of the coal face and transmits a signal to the control system, and the control system selectively opens and closes the dust remover at the corresponding position to achieve accurate dust removal. The linear dust remover forms an entrainment effect to suck dust generated by coal cutting of the roller of the coal mining machine, and the dust is purified. And meanwhile, a barrier is formed between the coal mining machine and the pedestrian side in manners of forming an air curtain, a water curtain, a fog gun and the like at the air outlet, so that untreated dust is prevented from diffusing to the pedestrian side for the second time. The device is simple in structure and convenient to mount, solves the problem of serious dust pollution of the fully-mechanized coal mining surface, and realizes source treatment of dust while preventing dust diffusion.

The utility model relates to the field of coal mine dust removal equipment, in particular to a pneumatic wet dust remover. The wet-type dust removal device comprises a dust removal cylinder with two open ends and a wet-type dust removal assembly located in the dust removal cylinder. The wet-type dust removal assembly is provided with a spray head and fan blades, the fan blades are driven to rotate to generate air flow by taking inlet and outlet air as power, and meanwhile, the air flow is linked with water drops sprayed by the spray head to wet and collect dust. The wet-type dust removal assembly is arranged, kinetic energy is provided through the pneumatic motor, and the fan blades are driven to rotate. The fan blades rotate to generate a negative pressure environment, and dust is sucked into the dust removal cylinder. And meanwhile, the underground water filtered by the filter is sprayed out after being atomized by the spray head to humidify the sucked dust. Through wind-water linkage, the contact volume of wind and water and coal dust is increased, and the dust falling efficiency is improved.

The utility model discloses a water-saving type coal mine dustproof spraying device, which belongs to the technical field of spraying and dust falling and comprises a water distribution pipe mounted at the top of a coal mine tunnel, a dust concentration sensor mounted on the water distribution pipe and a plurality of atomization spraying components mounted at intervals. The atomization spraying assembly comprises a four-way pipe, a movable spray head and a plurality of atomization spraying assemblies installed at intervals, the movable spray head comprises an installation ring, a plunger liquid inlet pipe and an atomization spray head, the installation ring is connected with the first installation end, and a liquid inlet is formed in the side face of the bottom of the plunger liquid inlet pipe and is in sealed sliding connection with the installation ring; the atomizing nozzle is rotationally arranged at the top of the plunger liquid inlet pipe, and a control structure for driving the plunger liquid inlet pipe to move is arranged between the plunger liquid inlet pipe and the second mounting end. According to the dustproof spraying device, the dust concentration change in the roadway can be monitored in real time through the dust concentration sensor, unnecessary water resource waste is avoided, and the dual purposes of precise dust falling and energy saving are achieved.

The invention belongs to the technical field of intelligent mines, particularly relates to a coal mine precise spraying control method based on point cloud segmentation and dust prediction, and aims to improve the intelligence and refinement level of coal mine dust treatment. Comprising the steps of collecting three-dimensional point cloud data of a coal mine operation environment in real time through a laser radar, performing semantic segmentation on the three-dimensional point cloud data by using a deep learning model, identifying a dust distribution area, mine airflow parameters and operation intensity information, and constructing a dynamic space scene semantic graph. And performing real-time prediction on a dust diffusion path, a concentration change trend and a high-risk area by adopting an AI prediction model fused with spatio-temporal characteristics based on the dynamic space scene semantic graph. And according to the dust prediction result, the on-site working condition and the spraying system layout are combined, a start-stop instruction, spraying direction parameters and strength parameters of the intelligent spraying device are generated, dust falling effect data are obtained, the dust falling effect data are transmitted back to the control end through a closed-loop feedback mechanism, and a spraying control strategy is continuously optimized.

The application discloses a coal mine dust diffusion simulation and control method based on artificial intelligence, relates to the technical field of coal mine dust diffusion simulation and control, and comprises the following steps: collecting environmental data such as dust concentration, ventilation flow rate, temperature, humidity and equipment running state through a monitoring system in the coal mine, and performing cleaning and format processing in combination with historical working condition data. The application utilizes reinforcement learning and virtual extreme scene simulation, improves the identification and emergency response capability of the system to edge working conditions, effectively reduces the dust diffusion and explosion risk, and guarantees the safety of the mine. Through dynamic adjustment of the ventilation and water spraying systems, efficient utilization of resources is realized, energy consumption and operation cost are reduced, and the service life of the equipment is prolonged. The system has self-adaptive learning capability, can optimize the control strategy according to the monitoring data and historical events, can automatically adjust even if the environment changes, improves the robustness and flexibility, and reduces manual intervention.