470 results about "Coal dust" patented technology

The invention discloses a cyclone separation and moving particle bed coupled pulverized coal pyrolysis oil gas high-temperature dust removal system, and belongs to the technical field of coal clean utilization. The system comprises a cyclone separator, a fine filtration unit, a filter material cyclic regeneration unit and an intelligent control unit, the fine filtration unit comprises a particle bed, a particle bin is arranged at the top end of the particle bed, and a composite filter material layer is arranged on the particle bed; a dust-containing high-temperature oil gas pipeline and a pretreatment high-temperature oil gas pipeline are arranged at the top end of the cyclone separator, dust-containing high-temperature oil gas is introduced into the cyclone separator through the dust-containing high-temperature oil gas pipeline to be pretreated, and the pretreated dust-containing high-temperature oil gas is introduced into the particle bed through the pretreatment high-temperature oil gas pipeline to be finely filtered; and a coke breeze discharge pipe is arranged at the bottom of the cyclone separator. The invention is used for solving the technical problem of low gas-solid separation efficiency at high temperature caused by the adoption of a single filter material in the existing pulverized coal dust removal system.

The invention discloses a coal mine coal dust explosion risk dynamic evaluation and explosion suppression system, which comprises a sensing module, a data processing module, a data processing module and a data processing module, wherein the sensing module is used for acquiring direct and indirect parameters of an underground environment; the central processing module is used for operating a risk assessment algorithm and generating a control instruction; the explosion suppression execution modules are distributed in pipelines and roadways of underground key nodes and are used for executing explosion suppression actions; the active chemical detection module is arranged in the main ventilation pipeline and is used for carrying out pre-chemical sampling and analysis on the inflowing air so as to judge the abnormal enrichment trend of the explosive gas; according to the system, a dynamic risk assessment system based on multi-source indirect perception and active chemical detection is constructed, and precise explosion suppression of time-space cooperation is realized. The method has the advantages of being capable of achieving early warning, dynamic evaluation and precise collaborative explosion suppression.

The invention discloses a multi-stage pulverized coal separator with dynamic guide vanes. The multi-stage pulverized coal separator comprises a mounting rack; the transmission assembly is assembled on the mounting frame and is used for conveying pulverized coal; the screening assembly is assembled on the mounting frame and is used for screening pulverized coal with qualified sizes; the threaded discharging opening is fixedly connected to the side face of the mounting frame; and the circulating connecting pipe is fixedly connected to the tail end of the mounting frame. The screening efficiency of the separator is high.

The invention belongs to the technical field of dust suppressants, and particularly relates to a biomass-based dust suppressant as well as a preparation method and application thereof. The biomass-based material comprises a micron-sized structure and a nano-sized structure distributed on the micron-sized structure. After the dust suppressant is sprayed on the surface layer of minerals such as coal, the dust suppression mechanism is changed according to the change of the water content, and when the water content is high, the dust suppressant can adhere to coal dust to suppress flying of the coal dust; when water volatilizes, the micro-nano biomass material or the water-soluble cellulose derivative can spontaneously assemble into a film, and the dried dust suppressant has a complete film-forming structure, certain strength, wind erosion resistance and strong affinity with coal, so that the long-time dust suppression capability of the dust suppressant can be ensured.

The invention discloses floating coal dust treatment equipment of a thermal power generation coal conveying system, and relates to the technical field of thermal power generation coal dust treatment. The floating coal dust treatment equipment for the thermal power generation coal conveying system comprises a dust collection barrel body, and a dust passing net is assembled on the top of the dust collection barrel body; and the air exhaust pipeline penetrates through the dust collection barrel main body. According to the floating coal dust treatment equipment for the thermal power generation coal conveying system, an air extracting pump is started, corresponding air extracting operation is carried out through an air extracting pipeline and a connecting cover, a fixed bin, a wind wheel, a first bevel gear, a first transmission rod, a second bevel gear, a first chain wheel, a chain, a reciprocating lead screw, a second chain wheel and a movable block are matched, and a cleaning brush plate reciprocates on an air passing net; according to the dust collection barrel, the dust collection barrel body is arranged, coal dust attached to the air passing net is cleaned into the dust collection barrel body, when the dust collection barrel is synchronously used with spraying and dust falling equipment, the coal dust with certain viscosity attached to the air passing net is cleaned, and the use efficiency of the dust collection barrel is improved.

The invention relates to the technical field of vertical shaft guide detection, in particular to an industrial intelligent visual detection and diagnosis system for a vertical shaft guide. The coal dust shadow quantization unit extracts a coal dust region by adopting a double-peak self-adaptive threshold segmentation combined region growing algorithm, and introduces a space weight factor to calculate an average gray value and a coverage area proportion, and the dynamic coupling calibration unit depends on a three-dimensional lookup table calibrated by multiple working conditions and nonlinear interpolation; the optimal deviation compensation coefficient of the jitter and coal dust combination is matched, a dynamic gray segmentation threshold value is generated, and a defect diagnosis decision unit accurately calculates the abrasion depth through partition self-adaptive segmentation, multi-scale morphological filtering and denoising and gradient amplitude and curvature double-constrained sub-pixel edge detection. A hierarchical control instruction is output according to the real-time depth and the historical trend, coupling interference is eliminated, the cage guide abrasion detection accuracy is improved, and a reliable basis is provided for safe operation and maintenance.

The invention belongs to the technical field of unattended management of thermal power plants, and relates to an intelligent dust fall and combustion suppression unattended management and control method and system for a coal yard of a thermal power plant. The method comprises the following steps: acquiring coal dust concentration, a dust region, a plurality of coal pile weights and a plurality of coal pile position forms; obtaining the spraying amount according to the coal dust concentration, and obtaining the spraying area range according to the dust area. The coal pile temperature is obtained in real time, whether combustion suppression control needs to be carried out or not is judged according to the coal pile temperature, if yes, the component of combustion suppression medicine is obtained according to the weight of the multiple coal piles, the medicine concentration is obtained according to the component of the combustion suppression medicine and the coal pile temperature, and the spraying angle of the medicine spraying equipment is obtained according to the position forms of the multiple coal piles. The manual labor intensity and the occupational disease hazard probability are remarkably reduced through automatic spraying operation; and real-time temperature monitoring and precise spraying cooling are combined, so that spontaneous combustion of the coal pile is effectively prevented. According to the invention, intelligent safety control of the coal yard is realized, and the stability and reliability of safe operation of the coal yard are improved.

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 the technical field of computer vision and industrial equipment fault diagnosis, in particular to a fault image diagnosis system for a remote controller of a bolter miner driven by a CMC chip. Comprising a data sensing module for synchronously acquiring a CMC chip internal logic state vector and a real-time observation image, and preprocessing to obtain target visual data; the generative reconstruction module maps the logic state vector to a high-dimensional space to generate an ideal feature map; the visual analysis module is used for extracting an observation feature map through a convolutional neural network, generating an interference distribution mask based on frequency domain texture statistics, and identifying an unstructured environmental noise region; the difference analysis module is used for calculating a semantic residual image by combining the ideal feature map, the observation feature map and the interference distribution mask, and generating an image difference analysis result; according to the method, ideal features are generated by using the internal logic state vector of the CMC, and the residual calculation of the coal dust noise area is shielded by the interference mask, so that the false alarm caused by the environmental noise is effectively eliminated, and the closed-loop verification that what you see is what you control is realized.

The invention provides a supersonic rotational flow atomization dust removal spray head device and a spray pipe optimization simulation analysis method, and relates to the technical field of supersonic rotational flow atomization spray heads, the device comprises an air inlet pipe, a liquid inlet, a shell, a Laval spray pipe, an outer rotational flow pipeline and an atomization spray nozzle, the Laval spray pipe is arranged in the outer rotational flow pipeline, and the atomization spray nozzle is arranged in the shell; a wave elimination section of the Laval nozzle is connected with the atomizing nozzle, a spirally distributed liquid film circular seam is formed in the side wall of a mixing chamber at the lower end of a throat part of the Laval nozzle, and a spiral flow deflector is arranged at an outlet of the atomizing nozzle. Efficient dynamic interaction with rotating liquid supplied by the outer ring spiral channel occurs at the outlet of the nozzle, efficient fog drop crushing and uniform spraying are achieved through airflow acceleration and kinetic energy conversion, and it is guaranteed that the particle size of fog drops meets the requirements of capturing coal dust, improving the atomization efficiency, strengthening the wind resistance and reducing water consumption; better fogdrop particle size matching is realized; and the blocking risk is reduced.

The application discloses a kind of based on ultra-wideband radar's on the scraper conveyor up and down slide monitoring device and method, belong to coal mine safety state monitoring technical field.The monitoring device includes the electric rotating platform installed on the head of scraper conveyor, linear array antenna pointing to the end face end coal wall is installed on the electric rotating platform, linear array antenna connects ultra-wideband imaging radar signal module;Industrial computer sends instruction to control the receiving and sending of ultra-wideband imaging radar signal module, the rotating movement of electric rotating platform respectively;Linear array antenna installed on the head of scraper conveyor is driven by electric rotating platform, periodically collects the radar image of end face end, then by registration with the image periodically collected before, to deduce the distance that the head of scraper conveyor up and down slide;It has strong robustness to the harsh environmental conditions of end face end coal dust water vapor, and monitoring data is accurate.

The invention relates to the technical field of gas well reservoir identification methods, in particular to a method and device for eliminating coal seam interference in gas well reservoir accurate identification, and the method comprises the following steps: determining the existence of a coal seam by using a while-drilling gamma curve, a resistivity curve and a rock debris logging coal dust proportion; calculating a dynamic influence factor; on the basis of a gas survey data correction formula, obtaining a gas survey correction value of any depth point, and on the basis of a resistivity correction formula, obtaining correction resistivity; and determining the reservoir type by combining the gas logging correction value, the correction resistivity, the gas logging humidity ratio and the interval transit time. According to the method, firstly, the gas logging data and the logging resistivity are corrected, the influence of the coal seam on the gas logging data and the resistivity data is eliminated, the abnormal interference of the coal seam on the gas logging data and the logging data is effectively removed, and then the gas logging correction value obtained after correction, the correction resistivity, the gas logging humidity ratio and the interval transit time are combined, so that the gas logging data and the logging resistivity are obtained. According to the method, the precision and the efficiency of gas reservoir identification are improved.

This invention relates to the field of pulverized coal conveying and dust removal technology, specifically to a pulverized coal dust removal method, comprising: S1: Constructing a dust removal system: setting up a dust cover on a conveyor belt, setting up a pressure-reducing chamber on the dust cover, installing wear-resistant baffles at the bottom of the dust cover, and installing a dust curtain inside the dust cover; installing a dust collector at the top of the dust cover; S2: Coal conveying and primary dust removal: starting the conveyor belt to transport coal, the coal falls onto the conveyor belt, and the generated dust-laden gas forms a local high-pressure zone under the obstruction of the dust curtain, causing a portion of the dust-laden gas to undergo primary filtration through the filter components on the pressure-reducing chamber; S3: Secondary dust removal: the remaining dust-laden gas in the dust cover is sucked into the dust collector, the dust-laden gas enters below the liquid surface of the dust collector, causing the pulverized coal particles to settle and form coal slurry, which is then transported outside the dust collector, and the purified gas is discharged through the outlet. This method achieves closed-loop control of the entire process from source dust suppression to end-of-pipe treatment through two-stage synergistic dust removal, improving the dust removal effect.

The invention discloses a pulverized coal dust blocking mechanism for a scraper conveyor and a dust blocking method of the pulverized coal dust blocking mechanism, and relates to the technical field of scraper conveyors, the pulverized coal dust blocking mechanism comprises a rack, a primary dust blocking mechanism is arranged on the inner side of a supporting bearing, and the interior of the primary dust blocking mechanism comprises a static disc, a labyrinth movable disc, a compression packing brush and a dust discharging opening; static discs are installed on the two sides of the surface of the rack in an embedded mode, a labyrinth movable disc is arranged on one side of each static disc, the surface of a rotating shaft is sleeved with a compression packing brush, dust discharging openings are formed in the two sides of the surface of the rack, and a split labyrinth type dust blocking mechanism is arranged on the surface of the preliminary dust blocking mechanism. According to the split labyrinth type dust blocking mechanism, the risk that the supporting bearing is damaged due to dust invasion in a lubricating cavity of the supporting bearing can be reduced, dust left in an annular groove can be brushed, the automatic spraying function of the dust blocking mechanism on the surface of the split labyrinth type dust blocking mechanism is achieved, automatic water control is achieved, the labor intensity of workers is reduced, and the working efficiency is improved. And the cost is low.

The invention relates to the technical field of coal drying, in particular to central pipe heating coal upgrading and drying equipment. The coal dryer comprises a cylinder, the two ends of the cylinder are connected with a front-end extension pipe and a rear-end extension pipe respectively, a drying cavity is formed in the cylinder, a heating structure is arranged in the drying cavity, the section of the heating structure is circular, the heating structure is of a circulating pipeline structure, and low-temperature airflow is introduced into a pipeline and used for achieving non-contact low-temperature drying operation on coal. A drying mode of circulating airflow between the central pipeline and the 18 seamless steel pipes is adopted, so that a heat source is not in direct contact with coal, no open fire is generated in the whole process, and the hidden danger of explosion caused by contact between coal dust and the open fire is eliminated fundamentally; and meanwhile, the problems of local overheating, coal property change and the like caused by direct contact in traditional high-temperature drying are solved, and the safety of the drying process is improved.

The utility model relates to a gas discharge device for mine safety production, which belongs to the technical field of mine safety production technical equipment and comprises a base, a first support frame, a second support frame, a gas inlet seat, a harmful gas treatment box and a gas discharge seat, and a gas treatment mechanism is arranged at the top of the base. According to the gas emission device for mine safety production, coal dust and ore dust with large sizes are filtered under the action of a filter screen, gas is pumped into a gas spraying treatment chamber through a gas suction fan, and the coal dust and the ore dust in the gas are atomized under the action of an atomization spraying head, so that the gas emission effect is improved, and the gas emission efficiency is improved. Coal dust and ore dust particles are adsorbed on water, the weight of the particles is increased, so that the dust particles settle to the bottom of the gas spraying treatment chamber and are recycled into the recycling box, excessive water is evaporated under the action of a heating pipe and absorbent cotton, and gas is discharged after being treated by the harmful gas treatment box.

The utility model belongs to the field of circulating fans, and particularly relates to a circulating fan suitable for coal dressing, which comprises an outer main body, a mounting cover is arranged at the rear end of the outer main body, and an assembling mechanism is arranged between the outer main body and the mounting cover; the assembling mechanism comprises a motor, the motor is arranged at the front end of the outer main body, the motor is fixedly connected with the outer main body, the rear end of the motor penetrates through the front end of the outer main body to reach the interior of the outer main body, and the rear end of the motor is fixedly connected with a transmission rod; through the design of the assembling mechanism, the function that the impeller can be conveniently disassembled is achieved, and the problems that an existing fan is not provided with an assembly which can be conveniently disassembled, cleaned and overhauled, due to the fact that in the long-term use process of the fan, much coal dust is extremely prone to being accumulated on the surface of the impeller, if cleaning is not conducted in time, the draft force of the fan is extremely prone to being reduced, and the fan is damaged are solved. And meanwhile, the problem that the interior of the fan is easily blocked is solved, and the convenience of later maintenance is improved.

The utility model provides a pressure relief air window of a coal face, and belongs to the technical field of coal mining. Comprising a window frame in a right triangle shape, an air window is rotationally connected to one side wall of the window frame, electric push rods rotationally connected with the side wall of the air window are symmetrically and rotationally connected to the two inner side walls of the window frame, and a dust blocking air grid is arranged on the other side wall of the window frame; a cleaning brush arranged above the dust blocking air grid is arranged between the tops of the sliding blocks. The dust blocking air grid can be used for blocking coal dust flying in the coal face, the sweeping assembly and the motor work to enable the brush strips on the sweeping brush to move on the dust blocking air grid, the coal dust attached to the dust blocking air grid can be swept away, and the swept-away coal dust falls back into the coal face. Coal dust is effectively prevented from drifting to the outside atmosphere during pressure relief and ventilation, the environment is protected, and waste of coal resources can be avoided.

The application discloses a coal mine ventilation air oxidation power plant hot air recycling pipeline anti-backflow and coal dust explosion prevention device, ventilation air of a coal mine is connected to a mixing device through a ventilation air shaft and a ventilation air guide channel, low-concentration gas enters the mixing device through a gas conveying pipeline, and the ventilation air and the low-concentration gas are mixed in the mixing device; the mixing device is connected to a regenerative oxidation device through an air inlet pipeline, high-temperature flue gas generated by the regenerative oxidation device is connected to a generator set through an air outlet pipeline, low-temperature flue gas generated by the regenerative oxidation device is connected to a chimney and a hot air recycling pipeline respectively, and a hot air fan conveys the low-temperature flue gas to the ventilation air guide channel; a PLC control system comprises an air flow monitoring part and a linkage shutdown anti-backflow and explosion prevention part. The device can realize linkage of the hot air fan and the regenerative oxidation device, and can cool the hot air fan after an emergency stop; and the device can also be used for preventing ventilation air carrying coal dust from flowing back into the hot air recycling pipeline, and essentially solves the problem of explosion source of a hot air recycling system.

The application provides a coal quality improving and caking enhancing dust inhibitor and a preparation method thereof. Through synergistic effect of components, the coal quality improving and caking enhancing dust inhibitor can not only form a tough solidified film on the surface of coal, effectively inhibit dust flying and reduce coal loss, but also improve apparent calorific value of coal and improve coal quality through catalytic oxidation and pore filling mechanism. A composite wetting system can significantly reduce surface tension of a solution, and enhance the penetration and wrapping capacity of coal dust. A bonding system can form a solidified film with a three-dimensional network structure, and provide excellent wind erosion resistance and mechanical strength. Meanwhile, the quality improving and caking enhancing system can form a dense oxidation layer by catalyzing oxidation of light components on the surface of coal, and adsorb moisture, thereby reducing volatile loss and improving the calorific value of coal. In addition, the use of auxiliary components ensures the stability and environmental friendliness of the product under different environmental conditions. The preparation method is reasonable in process design, the product is stable in performance, and is suitable for industrial production.

The utility model discloses a movable dry-type blowout hole and overrun prevention device, which relates to the technical field of coal mine equipment and comprises a device main body, a shell is mounted in the device main body, an exhaust pipe is mounted at one end, far away from an air inlet end, of the shell, and an exhaust port is formed in the position, located at a port of the exhaust pipe, of the shell. An inner cavity of the exhaust port communicates with the exhaust pipe and an inner cavity of the shell, a gas inlet end is installed at the end, away from the exhaust pipe, of the shell, and a dust removal mechanism used for conducting preliminary dust removal and filtration on gas is arranged on the device body. According to the utility model, through the dust removal mechanism, gas carrying coal dust can be preliminarily and fully filtered, and the preliminarily filtered gas is conveyed to a subsequent device through the exhaust pipe, so that the preliminarily filtered gas can be secondarily filtered, and meanwhile, residual coal dust after filtration is conveniently collected and discharged; therefore, the gas preliminary filtering efficiency is further improved.

The present disclosure discloses a dust suppression material with a crosslinked network structure and its preparation method. The dust suppression material comprises: 16-20 parts of the cassava starch, 0.2-0.6 parts of the polyvinyl alcohol, 0.1-0.5 parts of the carboxymethyl cellulose, 0.1-0.5 parts of the crosslinking agent, 0.24-0.28 parts of the oxidizing agent, 0.4-0.48 parts of the catalyst, 1.8-2.6 parts of the gelatinizing agent, 0.1-0.3 parts of the water retaining agent, 0.8-1.2 parts of the wetting agent, and the balance is distilled water. The dust suppressant can wet and penetrate into the gaps of coal dust particles, and water molecules form hydrogen bonds with hydrophilic groups in the crosslinked network structure, firmly adsorbed on the network structure, thereby improving the water retention performance of the solidified layer.

The invention discloses a pebble coal sorting device. The pebble coal sorting device comprises a bin body, a sorting assembly and a dust removal assembly, the sorting assembly obliquely penetrates through the bin body and is provided with a feeding port, a discharging port and a sorting channel, the feeding port and the discharging port are located outside the bin body, the sorting channel is located in the bin body, the feeding port is higher than the discharging port, and a sorting grating plate is arranged at the bottom of the sorting channel. The separation grating plate is arranged in the bin body so that coal particles in pebble coal can fall into the bin body through holes of the separation grating plate, an opening is formed in the top of the separation channel so that coal dust generated by flowing of the pebble coal in the separation channel can flow into the bin body through the opening, and the dust removal assembly is connected with the bin body and used for pumping out the coal dust in the bin body and conducting purification treatment on the coal dust. According to the pebble coal sorting device, pebble coal can be effectively sorted, and the requirements for cleanness and environmental protection are met.

The utility model discloses a window mechanism and a feeder, and belongs to the technical field of observation windows. The window mechanism comprises an observation mirror, the middle of the observation mirror is provided with an installation through hole, and the observation mirror is used for being installed on a shell of the feeder; the rotating rod comprises a holding section and a connecting section connected with the holding section, the connecting section penetrates through the mounting through hole and is rotationally connected with the inner wall of the mounting through hole, and an angle is formed between the holding section and the connecting section; the scraping arm is connected with the side, away from the holding section, of the connecting section and makes contact with the to-be-cleaned surface of the observation mirror, and the scraping arm and the holding section are located on the two sides of the observation mirror respectively. An operator stands outside the feeding machine, holds the holding section and drives the holding section to rotate, so that the rotating rod can be driven to rotate integrally, the scraping arm on the connecting section is driven to rotate, the scraping arm scrapes and sweeps the to-be-cleaned surface of the observation mirror, dirt such as condensed water vapor and coal dust on the to-be-cleaned surface of the observation mirror is cleaned, cleaning of the observation mirror is facilitated, and the service life of the observation mirror is prolonged. The cleaning process of the observation mirror is simplified, and the cleaning efficiency is improved.

The utility model relates to the technical field of coal mine dust removal appliance application, in particular to a mining wet dust remover which comprises a front cylinder, a water inlet pipe, a fan, an explosion-proof motor and a rear cylinder, one end of the front cylinder is connected with an air inlet cover through a bolt, and a fan impeller is driven by the fan to rotate. High-speed relative movement between the fan impeller and airflow is formed when the fan impeller rotates, the explosion-proof motor is started in a matched mode, the explosion-proof motor drives the flow guide blades to move, coal dust particles can be efficiently captured through inertia collision and diffusion effects, and therefore coal dust in air can be more thoroughly combined with washing liquid sprayed by the water inlet pipe. And secondly, after the washing liquid completes the mixed washing effect, the washing liquid and the air enter the dust baffle of the W-shaped structure at the same time for dehydration operation, the airflow path of the dust baffle is conveniently optimized, the gas-liquid contact time is prolonged, the interception efficiency of the dust baffle is improved, and therefore the dehydration separation effect is achieved.

The utility model discloses coal vehicle washing and dust removing equipment, relates to the technical field of washing and dust removing, and solves the technical problem that the washing position cannot be adjusted according to the shape of a vehicle in the existing technical scheme, the coal vehicle washing and dust removing equipment comprises a main base, a stand column is fixedly installed on the main base, and a cross beam is fixedly installed on the stand column. Spraying heads are fixedly installed on the upper wall face of the cross beam and the side wall face of the stand column, a transverse motor and a lifting block are installed on the stand column in a sliding mode, the transverse motor, the lifting block, the longitudinal sliding block and other components are matched, the positions of the transverse rolling brush and the longitudinal rolling brush can be adjusted so as to adapt to the shapes and sizes of vehicles of different types, and accurate brushing is achieved. Through the unique design that the two-way threaded rod is combined with the longitudinal sliding block, the adaptability of the equipment to the vehicle shape is further improved, and the problem that the brushing position of traditional equipment cannot be flexibly adjusted is effectively solved; the surface and detail parts of a vehicle can be cleaned in multiple directions, and adhered coal dust and dirt can be deeply removed.

The present application provides a briquette pre-dust removal system and a briquette pre-dust removal method, which are used for modifying the briquette before the oxidation and carbonization processes, removing the coal dust on the surface of the briquette, and recycling the coal dust. The briquette pre-dust removal system comprises a gravity-free stirring device, a first separator and a second separator. The first separator has a first separation cavity, a first separation inlet, a first separation outlet and a first coal dust outlet, which are in communication with the first separation cavity. The second separator has a second separation cavity, a second separation inlet and a second separation outlet, which are in communication with the second separation cavity. The present application solves the problem that the existing briquette crushing material has a high dust removal rate during the carbonization process, and the fallen coal dust cannot be recycled.

The application discloses an impingement type inertial separator for separating pulverized coal and air, which comprises a separator cylinder, an air-pulverized coal mixture inlet pipe arranged on one side of the lower end of the separator cylinder, a vertical middle shaft arranged in the separator cylinder, a secondary separation baffle arranged above the secondary separation baffle, and an umbrella-shaped separation component arranged below the secondary separation baffle; the umbrella-shaped separation component comprises a plurality of conical shells, the top of each conical shell is provided with an umbrella-shaped separation component middle shaft connecting hole, the secondary separation baffle is provided with a secondary separation baffle middle shaft connecting hole in the center, the middle shaft passes through the secondary separation baffle middle shaft connecting hole and the umbrella-shaped separation component middle shaft connecting hole from top to bottom in sequence, and is fixedly connected with the secondary separation baffle and the umbrella-shaped separation component. The separator utilizes the umbrella-shaped separation component with the size gradually increasing from bottom to top to gradually intercept the pulverized coal particles, and the fine pulverized coal particles are filtered through the filter screen on the secondary separation baffle, so that the gas-solid separation is more complete, and the separation efficiency is higher.

The utility model discloses a coal mine mining and transporting device, and particularly relates to the technical field of coal mine transportation, the coal mine mining and transporting device comprises a scraper transmission mechanism, the scraper transmission mechanism comprises a chain, the side wall of the chain is connected with a plurality of scrapers, and a first outer shell and a second outer shell are arranged outside the chain and the scrapers. A supporting frame is arranged on the first outer shell and the second outer shell, a dust removal mechanism is arranged above the supporting frame, and the dust removal mechanism comprises a pulverized coal conveying pipe arranged above the supporting frame; according to the utility model, the dust removal mechanism is arranged and is fixed above the scraper transmission mechanism, so that coal dust emitted by coal mine stones in the scraper transmission mechanism can be sucked into the coal dust conveying pipe in time, the coal dust can be conveyed to the ground, and the danger of dust explosion in a coal mine tunnel is effectively reduced; therefore, the safety of workers in the coal mine tunnel is improved.

The utility model relates to the technical field of dust falling devices, and provides a spraying dust falling device for a coal mine belt conveyor, the spraying dust falling device comprises a cover body, a water spraying pipe, a communicating pipe and a water conveying pipe, the cover body comprises a mounting shell and two supporting blocks, the two supporting blocks are oppositely arranged on a belt conveyor rack, and each supporting block is provided with a containing groove and a fixing mechanism; the lower ends of the two sides of the mounting shell are slidably mounted in the containing grooves correspondingly, the multiple water spraying pipes are arranged on the inner wall of the mounting shell in parallel and located above the belt conveyor, the multiple atomizing nozzles are arranged on the water spraying pipes, and the communicating pipes are arranged between the water spraying pipes and the water conveying pipe. According to the device, a spraying dust falling mode is adopted, dust particles are captured through water mist, coal dust of the main haulage roadway is reduced, the working environment is improved, the mounting shell and the supporting block are conveniently and rapidly disassembled and assembled through the arrangement of the fixing mechanism, and through the arrangement of the first rapid connector and the second rapid connector, the working efficiency is improved. And the communicating pipe and the water conveying pipe can be quickly disassembled and assembled, so that the operation efficiency is improved.