29 results about "Dust emission" patented technology

The application provides a soil erosion risk early warning method and device based on dust data, which comprises the following steps: performing grid processing and screening on a region to be analyzed to obtain an effective grid region; obtaining NDVI data and soil moisture data of the effective grid region; determining a slope length factor and a slope factor of each effective grid region; determining net dust data in the region to be analyzed by eliminating the influence of wind direction; determining a dust emission value of each effective grid region based on the NDVI data, the soil moisture data and the net dust data; calculating the NDVI data, the soil moisture data, the slope length factor, the slope factor and the dust emission value by using a neural network algorithm to determine a soil erosion intensity prediction value; combining the soil erosion intensity prediction value to determine a soil erosion value of each effective grid region; determining a soil erosion risk grid based on the current soil erosion value and historical soil erosion data, and performing risk early warning on the soil erosion risk grid.

The utility model relates to mining equipment dust removal technical field discloses a dust removal structure of mining screening machine, including the box, the box is arranged obliquely, one side of the box is equipped with first opening, the other side of the box is equipped with second opening, still include: support leg, four support legs are arranged respectively below the box, and can adjust the height of the box through height adjusting assembly set up on the support leg, dust removal structure, dust removal structure sets up at the top of the box, can carry out spraying dust removal operation directly to the first opening and the second opening of the box, the bottom of the box is equipped with the protective cover. The utility model has the advantages compared with prior art: adopt all -round covering type dust removal's mode, effectively prevented the dust emission of screening machine running process, and is equipped with spraying dust removal structure at the feeding and discharging of both sides, auxiliary further dust fall, improve the dust removal efficiency.

This invention provides a method and apparatus for dust suppression using a heavy-duty hammer discharge system. The method includes the following steps: First, a target dust accumulation amount is preset based on the ash hopper volume. Second, the dust accumulation state is monitored, and the actual dust accumulation amount at the time of the last actual operation of the discharge valve is recorded. The actual accumulation amount is compared with the target accumulation amount to obtain the deviation accumulation amount. Third, the counterweight parameters of the heavy hammer are adjusted according to the deviation accumulation amount to change the operating threshold of the discharge valve for the next actual operation. When the actual dust accumulation amount reaches the operating threshold of the discharge valve, the discharge valve opens, and the dust is discharged into the discharge channel. After discharge, the discharge valve closes. Fourth, the dust emission level is determined based on the deviation accumulation amount, and dust is vacuumed at the ash outlet according to the dust emission level during the discharge process. Fifth, the discharge channel is self-cleaned after vacuuming to remove dust adhering to the inner wall of the discharge channel. The heavy-duty hammer discharge system provided by this invention can improve the accuracy of the discharge timing.

This utility model discloses a material guide trough for easy dust removal, relating to the field of dust removal and material conveying technology. The utility model includes a base plate, with a transmitter fixedly connected to the top outer wall of the base plate. A dust removal mechanism is provided on the top outer wall of the transmitter, including the material guide trough. This utility model incorporates a curved pipe. When the vacuum cleaner starts operating, the generated suction is transmitted through the transmission pipe into the curved pipe, and then through the curved pipe into the dust collection hood. The dust collection hood then sucks up the dust generated by the material being poured. The sucked-up dust then passes through the curved pipe and the transmission pipe back into the vacuum cleaner, and finally falls into a dust collection box for storage, facilitating subsequent unified cleaning of the collected dust. This achieves the effect of easy dust removal, effectively reducing dust emissions during material conveying, lowering the dust content in the workplace air, and improving the air quality of the workshop.

The application discloses a dust escaping and recycling system of a coking plant dust removal ash bin, relates to the technical field of industrial dust removal, and comprises a dust removal ash unloading room, an ash tank operation platform, a dust removal ash storage tank, a dust collection pipeline, an automatic sealing gate, a dust humidifying and stirring system, a dust removal butterfly valve, a fluid conveying control valve, a dust remover and a control device. A mounting hole corresponding to the dust removal ash storage tank is formed in the side wall of the dust removal ash unloading room, one end of the dust collection pipeline is arranged in the mounting hole, the other end of the dust collection pipeline is connected to the input end of the dust remover, the output end of the dust removal ash storage tank is connected to the input end of the dust humidifying and stirring system, a dust suction inlet is formed in one end of the dust collection pipeline located in the dust removal ash unloading room, the dust removal butterfly valve is arranged in the dust collection pipeline, and the automatic sealing gate is arranged at the entrance of the dust removal ash unloading room. Through the arrangement, dust pollution is significantly reduced, equipment corrosion is reduced, manual cleaning intensity is reduced, and the working environment is improved.

The application discloses a production process of a road guardrail corrugated beam, which comprises the steps of laser cutting, high-temperature forming and quenching, cutting and trimming, surface treatment and laser punching, etc.; the application cancels the galvanizing process, can reduce the zinc consumption of each ton of product, avoids the discharge of galvanizing wastewater (containing heavy metals such as zinc and chromium), adopts dry operation in the ultrasonic shot blasting process, has no dust pollution, and reduces dust emission compared with the traditional sand blasting process. The thin design makes the weight of the corrugated beam per unit length lower, and the production and transportation costs are also significantly reduced, and the application is especially suitable for installation operation in mountainous areas; the anti-corrosion feature makes the corrugated beam directly used in harsh environments such as coastal salt mist areas and industrial acid rain areas, can replace the traditional stainless steel galvanized guardrail, and the application range is expanded to high-corrosion scenes which cannot be covered by the traditional process.

This utility model relates to the field of dust removal technology, specifically to a micro-powered dust removal device, including a support frame installed above a conveyor belt. A collection chamber is located at the lower part of the support frame, and a filter device is installed inside the collection chamber. The filter device is connected to a dust removal device. An mounting plate is installed above the filter device, and a control chamber is located above the mounting plate. A valve for controlling the connection between the control chamber and the collection chamber is installed inside the control chamber. A negative pressure fan is installed above the control chamber, enabling automatic dust removal. This eliminates the need for frequent manual cleaning of the filter element, significantly reducing operation frequency. During dust removal, the device does not need to stop and can continuously perform dust filtration, improving production efficiency. The collected dust can be directly recycled, avoiding resource waste and reducing dust emissions from polluting the environment.

This utility model relates to an activated coke material conveying and ash removal device, belonging to the technical field of conveying devices. It includes an outer chute connected between the material conveying hopper and buffer tank of a chain bucket elevator. An inner chute is installed inside the outer chute, with its inlet connected to the outlet of the conveying hopper. A grid is installed inside the outer chute, located below the outlet of the inner chute. An air inlet unit and a dust removal unit are provided on the outer chute; the air inlet unit is located below the grid, and the dust removal unit is located above the grid. An inspection port is provided on the outer chute, located above the grid, and a maintenance door is hinged to the inspection port. This invention is easy to operate and can effectively separate and remove fine particles and dust from activated coke materials, ensuring that the material particle size meets requirements, improving the adsorption capacity of the activated coke, and preventing excessive dust from entering the module's output hotspot and exceeding the outlet dust emission standard.

This utility model discloses a dust collection machine, including a machine body. A collection shaft is rotatably mounted on the bottom of the machine body, and hammer blades are provided on the collection shaft. Two interconnected negative pressure fans are provided in the machine body. The air inlet of the negative pressure fan is located above the collection shaft, and the air outlet is connected to the feeding duct. The feeding duct is located on the top of the machine body, with an arc section at its upper end and a screen plate on its outer wall. This utility model relates to the field of dust collection machine technology. The hammer blades of the collection shaft operate at a height of more than 50 mm off the ground, avoiding direct impact on the soil and reducing dust from the source. At the same time, the hammer blades can crush straw, improving collection efficiency. The air inlet of the negative pressure fan is located above the collection shaft, forming a local negative pressure field, adsorbing straw while separating dust through the dust collection screen. The positive pressure fan recycles the dust in the dust collection duct and blows up the straw close to the ground, realizing a closed loop of "collection-dust removal-reuse". The dust removal efficiency is high and there is no external dust emission.

This application relates to the field of dust covers and discloses a dust cover for grain and oil loading and unloading that can reduce dust emissions. The dust cover for grain and oil loading and unloading in this application includes a dust cover body, a filter box located adjacent to the dust cover body, a dust filter liquid inside the filter box, and a second sealing cover at the upper end of the filter box. A rear connecting pipe is located at the upper end of the second sealing cover to facilitate the discharge of the dust-treated air from the filter box, ensuring the smooth operation of the structural components. This effectively treats dust generated during grain and oil loading and unloading. The second sealing cover facilitates regular maintenance of the filter box by workers, ensuring its operational efficiency and facilitating subsequent dust suppression operations.

This invention relates to the field of automatic control and processing technology, specifically to an adaptive control method for crushing construction solid waste. The method includes real-time acquisition of particle size, rebar ratio, moisture content, strength, and feed rate via a multi-source sensor array; generation of operating condition vectors via a cross-modal fusion network; and training of a convolutional neural network to output rotor speed, cavity clearance, hydraulic pressure, screen aperture size, and shape memory alloy deformation. This application also relates to adaptive control equipment for crushing construction solid waste. The controller of this application synchronously drives a variable frequency motor, hydraulic cylinder, variable screen, and Ni-Ti shape memory alloy actuator, completing reversible geometric adjustment within 10 seconds. This enables rapid switching between coarse and fine crushing, incremental updates via online particle size detection and energy consumption metering feedback network, forming a perception-decision-execution closed loop. This significantly reduces energy consumption, substantially improves particle size qualification rate, extends liner life, reduces the need for manual intervention, enhances overall operational stability and intelligence, and reduces dust emissions.

This invention discloses a fully automated finished stone material preparation system and its production process, belonging to the field of building material preparation technology. The system adopts a factory-style assembly line layout, sequentially including: a raw material crushing and shaping unit, a sand making and grading unit, a finished product sorting and storage unit, a dust collection and stone powder recovery unit, a material circulation and buffer unit, a resource-based packaging unit, and a central intelligent control unit. The finished product sorting and storage unit is equipped with parallel and independently conveying No. 1 and No. 2 finished product belts, a gravel finished product belt, and a dry sand finished product belt; the dust collection unit includes a dust collector network, a stone powder silo, and a dust hopper; the resource-based packaging unit directly or in combination with other materials forms bagged products from stone powder. This invention integrates aggregate shaping, dry sand making, full stone powder recovery, and compounding and packaging processes, achieving material balance and adaptive quality adjustment through intelligent control. It produces no process wastewater, achieves 100% stone powder utilization, and maintains a dust emission concentration ≤8mg / m³, realizing green, efficient, and intelligent production.

This utility model discloses a dust collection device for fused white fused alumina, comprising an air inlet pipe, a U-shaped dust removal pipe, and a buffer pipe. The U-shaped dust removal pipe and the buffer pipe are respectively connected to the top two ends of the air inlet pipe. A positioning plate is fixedly installed on the bottom inner wall of the air inlet pipe. A J-shaped air guide pipe is fixedly installed in the center of the positioning plate through an opening. A bearing is fixedly installed on the outer wall of the other end of the J-shaped air guide pipe, and a metal mesh cover is fixedly installed on the outer ring of the bearing. This utility model introduces dust-containing gas through the air inlet pipe. The gas then enters the rotating metal mesh cover through the J-shaped air guide pipe, dispersing into fine bubbles that enter the U-shaped dust removal pipe. This allows for thorough mixing of the gas and solution, greatly increasing the contact area between the gas and solution, enabling the dust to be fully mixed and adsorbed. This more efficiently removes dust from the gas, effectively reducing the dust emission concentration during the smelting of white fused alumina and minimizing pollution to the surrounding environment.

This utility model relates to the technical field of a dust-reducing feed bagging device, and more particularly to a dust-reducing feed bagging device, including a bagging box. A feeding hopper is provided on the base surface of the bagging box, and a discharge solenoid valve is provided at the bottom of the bagging box. An auxiliary component is provided on the lower side of the bagging box. Using the auxiliary component, both ends of the feed bag are placed on a clamping plate. Rotating a screw can move the clamping plate, fixing both ends of the feed bag. Running a drive motor, in cooperation with a rotating rod, a first drive worm gear, and a second drive worm gear, drives the first drive worm wheel and the second drive worm wheel to rotate. A connecting frame can be moved upwards via a first threaded rod, a second threaded rod, and an adjusting sleeve, allowing the upper end of the feed bag to fit snugly against the bottom of the bagging box. This reduces dust emissions during filling and is more environmentally friendly in use.

The present invention discloses a negative oxygen ion generator for maintaining a stable negative oxygen ion concentration, which relates to the technical field of negative oxygen ion generators and includes a housing, air inlets opened on the left and right sides of the lower part of the housing, an air outlet opened on the front of the housing, a grille assembly arranged inside the air outlet, and a protective net arranged inside the grille. A regulation component for adjusting the position of the protective net is arranged inside the grille assembly; the present invention can achieve the linkage protection of equipment start and stop. When the machine is turned off, the protective net adheres to the grille plate and the air inlets are closed, eliminating the dust storage gap, blocking the intrusion of dust and moisture, and preventing the internal components from being soiled by dust accumulation; when the machine is turned on, the grille plate is opened, the protective net is away from it, and the air inlets are opened synchronously, which not only ensures smooth air outlet and air inlet, meets the requirements of negative oxygen ion generation and diffusion, but also prevents dust accumulation and electrostatic dust emission, prevents dust adhesion from interfering with discharge, inhibits the attenuation of negative oxygen ion concentration, avoids unnecessary ion loss, and ensures the long-term constancy of the output concentration.

The utility model discloses a kind of granular silicon filtering and collecting devices for dust removal pipeline, including dust removal pipeline, multiple collecting devices are installed on dust removal pipeline;Collecting device includes first dust removal pipeline, first dust removal pipeline is successively installed with tee pipe, filter plate and second dust removal pipeline along its dust emission direction, tee pipe structure is in " T " shape, the flange end of the air inlet end of tee pipe and first dust removal pipeline is fixedly connected by bolt, the flange end of the air outlet end of tee pipe and second dust removal pipeline is fixedly connected by bolt, second dust removal pipeline is equipped with inclined section, groove is equipped in section, filter plate is inserted in groove, filter plate is longitudinally opened, annular baffle ring is fixed in the air outlet end of tee pipe, so that filter plate is clamped in groove by annular baffle ring, the flange end of discharge end of tee pipe and collecting cylinder is fixedly connected by bolt;The utility model has the advantages that: relatively simple structure, can substantially reduce the frequency of manual cleaning.

This invention relates to the field of filtration-based dust removal and intelligent control technology, and discloses an intelligent dust removal method and system based on multi-source sensing, prediction, and control. The method includes: collecting dust concentration, dust images, wind pressure, pressure difference, current, and temperature and humidity data; generating a unified operating condition feature set through time alignment, noise reduction, normalization, and feature extraction; identifying dust concentration levels, identifying dust spatial distribution, and predicting dust emission trends based on the unified operating condition feature set; and performing joint control solutions in conjunction with equipment health diagnosis results to generate a dust removal control command set, driving the variable frequency fan, pulse jet valve, spray device, and dust collection hood to perform adjustments; and finally, completing maintenance reminders and updating control parameters based on operational feedback. This invention achieves collaborative processing of dust status and equipment status, improving the continuity and adaptability of dust removal control and maintenance management.

The utility model relates to the technical field of fireproof coating processing, in particular to drying equipment for fireproof coating processing, which comprises a bottom plate, a motor is mounted at the upper end of the outer wall of a cover through bolts, and an output shaft of the motor is fixedly connected with a stirring rod. The multi-stage electric telescopic rod is stopped, an electromagnetic valve of a discharging pipe of the barrel is opened, the dried materials inside are discharged and enter a collecting barrel, dust flying can be greatly reduced, the collecting barrel is covered with a cover plate to achieve the dust falling purpose, secondary pollution is reduced, the dust falling device can vertically move through cooperation of a fixing mechanism and a cover, and the dust falling effect is improved. And then, a worker lifts the cover upwards through a handle on the cover by using a crane and other tools to complete the disassembly, and compared with the use of bolts, the disassembly can be completed only by pulling the insertion blocks, so that the use of tools is not needed, and meanwhile, the disassembly is faster.

This application belongs to the technical field of grooving machines, and particularly relates to a road grooving machine, comprising: a frame with rollers at the bottom and an engine and handle at the top; a cutter head mounted on the frame; and a dust collection mechanism mounted on the frame and surrounding the cutter head; wherein the dust collection mechanism includes a water spraying structure and a dust blocking structure. The beneficial effects of this application are: by forming a closed channel through the dust blocking structure and cooperating with the dust collector, dust escape can be effectively reduced, dust collection efficiency improved, and dust absorption more comprehensive, effectively controlling dust emissions.

The application provides a cement batching device for roads and bridges, and relates to the technical field of building construction. The cement batching device comprises a rack, a double-spiral feeding and stirring unit, a first screw conveying cylinder fixedly connected to the rack, a second screw conveying cylinder fixedly connected to the top end of the rack, a screw conveying main shaft rotatably connected to the inside of the first screw conveying cylinder and the second screw conveying cylinder, and feeding screw blades fixedly connected to the outside of the screw conveying main shaft. The closed conveying design fundamentally eliminates the dust emission of cement powder during the transfer process, reduces the dust concentration at the construction site, meets the environmental protection standards of green construction of road and bridge projects, avoids the contact between the material and the humid air, prevents the cement from being damp and caked and the external additive from being damp and invalid, and guarantees the original activity and quality stability of the cementing material.

This invention discloses a molding device for biomass fuel processing, relating to the field of molding technology for biomass fuel processing. It includes a support frame and a crushing assembly. The crushing assembly, comprising a crushing box, is located on one side of the support frame and has a feeding port on one side. A crushing shaft is located in the middle of the crushing box, and blades are arranged on the outer side of the middle of the crushing shaft. A motor is located on one side of the crushing shaft, and a centrifugal hammer mechanism is located on the other side. An annular groove is formed on a moving plate on one side of the centrifugal hammer mechanism. In use, this invention can automatically adjust the device according to the moisture content of the material, thereby regulating the moisture content of the material to ensure smooth crushing, avoiding excessive dryness or wetness, assisting in material pressing and molding, and adjusting the pressing pressure according to the material's moisture content, while reducing dust emission during crushing.

This utility model provides a screening machine for processing protein mulberry leaf powder, relating to the field of protein mulberry leaf powder processing technology. It includes a screening machine body and a filter assembly. The filter assembly is installed on one side of the screening machine body. The filter assembly includes a filter device body threadedly connected to the surface of the screening machine body. A medium-efficiency filter plate is slidably connected to the inner side of the filter device body. During the screening process, the generated dust is drawn into the filter device body by a fan through the air inlet. The dust-laden air first advances along the connecting channel. When passing through the medium-efficiency filter plate, larger dust particles are effectively intercepted. Subsequently, the preliminarily purified air continues to flow to the high-efficiency filter plate, where even finer particles are efficiently captured. Finally, the clean air is discharged from the air outlet. This dual-layer filtration mechanism not only greatly reduces the potential health threat of dust to workers but also avoids pollution of the external environment caused by dust emissions.

This invention discloses an environmentally friendly sand making equipment with dust reduction effect, relating to the field of sand making dust reduction. It includes: symmetrically paired air outlet boxes and suction boxes on both sides of the sand making machine barrel; corresponding air outlet boxes and suction boxes above the first, second, and third screening screens; the air outlet boxes are connected to an air outlet pipe and several equidistantly arranged air outlet holes, with the outlet holes angled upwards; the suction boxes are connected to an air suction pipe and several equidistantly arranged air suction holes; a centrifugal blower is connected to the air outlet pipe, and a pulse-type induced draft fan is connected to the air suction pipe, with the pulse-type induced draft fan connected to a bag filter. This invention uses paired air outlet boxes and suction boxes to form a circulating dust removal system, creating an upwardly angled intercepting air curtain, separating and adsorbing dust in layers and grades, achieving dry, waterless dust reduction, completely eliminating water spray dust reduction technology, achieving zero water consumption, curbing bidirectional dust emission from the inlet and outlet, and providing comprehensive dust removal coverage.

This invention discloses a vertical gypsum powder preparation gypsum crushing system and method, including a support base, a hammer crusher, a vibrating feeder, and a bucket elevator. The vibrating feeder and bucket elevator are located on the left and right sides of the hammer crusher, respectively. The hammer crusher is installed on top of the support base, and a dust treatment box is installed on top of the support base. This invention utilizes built-in dust, humidity, and temperature sensors to monitor the environmental parameters of the crushing chamber in real time. Based on this, the system automatically adjusts the dust emission mode and volume. A flow control valve ensures uniform dust distribution, filling the voids between gypsum particles, increasing material friction, improving crushing efficiency, reducing the adverse effects of abnormal local dust concentrations on the equipment, protecting internal components such as the hammers, and reducing wear. The entire dust treatment process is highly integrated and automated, reducing manual intervention and improving production efficiency and system reliability.

This invention discloses a quartz sand briquettes for industrial silicon smelting and a method for industrial silicon smelting thereof. In the preparation of the quartz sand briquettes, acid-washed and purified quartz sand is first divided into four grades according to particle size: 3-5mm, 60-150 mesh, 200 mesh and above, and 1200 mesh and above. These grades are then mixed in a mass ratio of 4:3:0.5:2.5 to obtain a graded mixture. 8% by mass of water glass is added to the graded mixture and mixed thoroughly. A molding pressure of not less than 150 tons is applied to each sample for high-pressure single-piece molding. The finished product is then dried and cured at a temperature above 150°C. This invention also discloses an industrial silicon smelting method using the above-mentioned quartz sand briquettes in conjunction with a carbonaceous reducing agent for furnace smelting. Through the triple synergy of high-pressure molding, specific particle size distribution, and a water glass bonding system, this invention enables the briquettes to possess both ultra-high cold and hot strength and stable permeability. When used in industrial silicon smelting, this significantly optimizes furnace conditions and substantially reduces dust emissions, demonstrating outstanding industrial application value.

The application discloses a method for extracting components with different particle sizes from industrial waste residue powder, and the method steps are as follows: step S1, conveying the pretreated powder material to an air flow sorting machine through a variable frequency screw feeder; step S2, performing two-stage grading and sorting through the air flow sorting machine to obtain first-stage ash; step S3, separating second-stage particles from the airflow through centrifugal force of a cyclone dust collector to obtain second-stage ash; step S4, separating superfine powder from tail gas through a bag dust collector to obtain third-stage ash; and step S5, performing tail gas emission, compared with the prior art, the application realizes fine grading of the powder material through the air flow sorting machine, effectively improves the sorting precision and product quality, realizes full-range accurate grading of the internal powder through two-stage processing of the cyclone dust collector and the bag dust collector, ensures that dust emission reaches the standard, recovers most of the available materials, can significantly reduce energy consumption and environmental pollution, and meets the green production requirements.

This utility model relates to the field of environmental protection equipment technology in the thermal power industry, and discloses a net-zero emission dust removal system for the thermal power industry. It comprises a rotary pulse dust collector body, a PPS ultra-low emission filter bag assembly, and an intelligent control system. It adopts a 360° continuous rotating jet cleaning structure, combined with gradient-density arranged PPS ultra-fine fiber filter bags, forming a dynamic filtration-regeneration synergistic cleaning mechanism. A multi-stage flow guiding and distribution device is set at the front end of the dust collector inlet to achieve uniform distribution of flue gas. Combined with an adaptive cleaning control system based on differential pressure feedback, the dust removal efficiency stably reaches over 99.99%, and the outlet dust emission concentration is ≤2mg / m³. The modular housing design achieves ultra-low emission targets while reducing system operating resistance by 40%, extending filter bag lifespan to over 5 years, and reducing overall energy consumption by 20%-30%. This provides the thermal power industry with a net-zero emission solution integrating high-efficiency dust removal, energy saving, and intelligent operation and maintenance.

This invention provides a mechanical valve for the feed inlet of a converter hopper, comprising a valve body, a valve plate, a valve shaft, and a swing arm. The valve body has a flared inlet, larger than the outlet of the unloading chute of the unloading trolley. The outlet of the unloading chute is equipped with a fan-shaped cover. The valve body has a square outlet. The valve plate includes a pipe and a steel plate, with the heavier end of the steel plate located in the upper part of the valve body. The valve shaft and the swing arm are connected by a key. The swing arm includes a roller, a bearing seat, and a panel. The roller is fixed between two panels by a pin. This technical solution can reduce dust emissions during the unloading process and prevent dust from escaping from inside the hopper and contaminating the platform.