48 results about "Atmospheric dust" patented technology

The invention relates to the technical field of atmospheric dust pollution prevention and environmental protection, and discloses a multi-objective optimization layout method for dust monitoring points of a bulk cargo port, which comprises the following steps: processing historical meteorological data and port geographic information, and calculating the comprehensive evaluation concentration of each candidate grid point in combination with a pollutant diffusion model; constructing a multi-target nonlinear mixed integer programming model taking maximization of environment sensitive point coverage and minimization of concentration interpolation deviation as target functions, wherein the model comprehensively considers multiple reality constraints; solving the model by adopting an improved genetic algorithm to obtain an optimal solution set capable of forming tradeoff among different targets; and carrying out quantitative evaluation on the solution set through preset monitoring area coverage rate and monitoring accuracy indexes, and determining an optimal monitoring point position layout scheme. According to the invention, a scientific and quantitative optimized layout scheme can be provided for bulk cargo port dust monitoring, and the reliability and spatial representativeness of a monitoring network are improved.

The present application relates to the technical field of heavy-metal pollution remediation, and relates in particular to a soil heavy‐metal accumulation predicting method employing an emission inventory and a receptor model. The method comprises: using atmospheric dust deposition, irrigation water, chemical fertilizers and pesticides as input flux sources of heavy metals to farmland soil, using surface runoff and crops as output fluxes, and constructing an input-output flux inventory of heavy-metal pollutants to clarify a dynamic balance relationship of soil heavy-metal accumulation; and continuously collecting and monitoring of soil samples. The invention provides crucial assistance in determining the transport balance of heavy metals in farmland areas impacted by non-ferrous metal smelting and beneficiation slag sites and in identifying sources of soil heavy-metal pollution, and offers theoretical guidance for subsequent soil heavy-metal remediation and targeted control.

The invention relates to the technical field of particulate matter source analysis, and discloses a refined source analysis method and system.The method comprises the steps that a plurality of pollution sources and dust falling particulate matter sampling points are determined according to soil pollution distribution of a target area and an atmospheric pollution source survey result, by collecting single particle mass spectrum data of pollution sources, sampling points and receptors, constructing a mass spectrum library and combining an ART-2a algorithm and a deep learning model, the heavy metal pollution contribution proportion is accurately analyzed and traced to specific discharge ports of enterprises, and the problem that specific pollution enterprises and working sections cannot be positioned in the prior art is solved. According to the method, a pollution source and an environment receptor are sampled and analyzed by utilizing a single-particle mass spectrometry technology aiming at atmospheric dust fall particles in soil, and the heavy metal in the atmospheric dust fall particles in the soil is finely traced to specific enterprises and working sections by analyzing the heavy metal, so that a fine technical support is provided for soil heavy metal pollution management and control.

The invention relates to the field of atmospheric dust pollution prevention and environmental protection, and discloses a wharf dust emission monitoring grid clustering point distribution method based on uncertainty quantization, which comprises the following steps of: a, performing dust diffusion simulation by utilizing a pollutant diffusion model, and determining a dust comprehensive evaluation concentration; b, performing comprehensive evaluation and preliminary screening based on fuzzy evaluation to obtain candidate point distribution grids; c, the candidate point distribution grids are clustered, and the candidate point distribution grids are merged into categories; and step d, determining a final dust emission monitoring point according to the category. According to the method, the objective dust comprehensive evaluation concentration is calculated by introducing the GAUSSION diffusion model based on various meteorological scenes and occurrence probabilities, and subjective judgment depending on historical experience is replaced; and a fuzzy evaluation technology and an entropy weight method are utilized to carry out mathematical quantification on various uncertain factors, so that interference of human factors can be eliminated fundamentally, and a point distribution result is more reliable and representative.

The invention relates to the technical field of wood board processing gas filtration, and discloses an atmospheric dust removal device for high-frequency hot-pressing wood-plastic composite veneer processing, the atmospheric dust removal device comprises a tank shell, the outer wall of the tank shell is provided with a water level observation line, the bottom of the tank shell is fixedly connected with a support frame, the top of the tank shell is internally provided with a transmission fixed column, and the transmission fixed column is fixedly connected with the support frame. A filtering mechanism is arranged at the top of the tank shell, an air dispersing mechanism, a first reciprocating lead screw, a reciprocating moving rod and an inclined material guiding plate are arranged in the tank shell, the air inlet rotating opening is rotationally connected to the inner wall of the tank shell, and the first reciprocating lead screw is rotationally connected to the inner wall of the tank shell; in the rotating process of the material closing piece, blockage to the feeding pipe is lost, then sodium hydroxide is discharged from the material closing piece, then the sodium hydroxide is mixed with reciprocating movement of the spoiler under rotating stirring of the spraying head, smoke, ammonia water and sodium hydroxide in the material closing piece are mixed, reaction is promoted, and therefore formaldehyde generated by gas in plate machining is better removed.

The invention discloses atmospheric dust suppression equipment for building construction excavation, and relates to the technical field of building equipment. The device comprises a supporting frame, an electric rotating rod is rotatably mounted at the bottom of the inner wall of the supporting frame, a U-shaped plate is fixedly mounted at the top of the electric rotating rod, two connecting rods are symmetrically arranged in the U-shaped plate, a spraying mechanism is arranged between the sides, close to each other, of the two connecting rods, and a transmission rod is arranged in the spraying mechanism. Through the arrangement of structures such as the sliding groove base, the spraying mechanism is promoted to achieve fixed and movable use modes, the actual application range is expanded, meanwhile, a square frame expands the interception range of the dustproof mechanism, the dustproof mechanism absorbs water mist, waste caused by rapid air drying of the water mist sprayed to the high position in the falling process is avoided, and the practicability is high. And when the wetted dustproof mechanism blows wind, dust raised on the ground is adsorbed and inhibited in time, and the dust suppression efficiency is improved.

The invention relates to the technical field of atmospheric dust fall, in particular to green dust fall equipment for building construction. Comprising a water pump and a water pipe connected with the water pump. The water pipe is communicated with a three-way joint; a branch opening of the three-way joint is rotationally and hermetically connected with a rotating sleeve; the end, away from the three-way connector, of the rotating sleeve is rotationally connected with an end cover. The center of the inner side of the end cover is fixedly connected with a center rod; the center rod is fixedly connected with the inner wall of the three-way joint; the inner wall of the rotating sleeve is fixedly connected with blades; the blades drive the rotating sleeve to rotate under the impact of water flow; seat holes are symmetrically formed in the circumferential outer wall of the rotating sleeve; according to the device, water flow impacts the blades in the rotating sleeve and is matched with the first bevel gear and the second bevel gear, so that the spraying base drives the atomizing nozzles to rotate and revolve at the same time, the atomizing nozzles on the spraying base spray mist without dead corners, and the dust falling effect around building construction is improved.

The invention discloses an atmospheric dust treatment device for environmental protection, and belongs to the technical field of atmospheric treatment.The atmospheric dust treatment device comprises a base, a mounting seat is fixedly connected to the top of the base, a conductive seat is rotatably connected to the top of the mounting seat, and a treatment adjusting assembly is arranged in the mounting seat. According to the dust removal device, an external air draft device conveys atmospheric air and carried dust into a mounting base through an air inlet, at the moment, the flowing effect of the air can drive inclined blades, a connecting sleeve, a connecting shaft and a first gear to rotate, and under the effect of an incomplete fluted disc, the first gear can drive the connecting shaft and a reciprocating lead screw to rotate; the first lead screw sleeve drives the conical block to move, and the second gear drives the fixed shaft and the movable lead screw to rotate, so that the use distance between the cathode and the anode is reduced, the electric field intensity can be enhanced, the dust electrification and adsorption efficiency can be improved, and large-particle dust in gas is prevented from being discharged from the air outlet; the dust adsorption effect and the dust treatment effect of the device are improved.

The utility model belongs to the field of dust fall observation equipment, and particularly relates to atmospheric dust fall observation equipment which comprises a distribution box, a connecting column fixedly connected to the upper portion of the distribution box, a display screen fixedly connected to the upper portion of the connecting column, a fixing ring fixedly connected to a column body of the connecting column, and a fixing protection ring clamped to a groove of the fixing ring. A first clamping piece is fixedly connected to the middle of the fixed protection ring, an adjusting column is clamped to the first clamping piece, a protection ring is slidably connected to a column body of the adjusting column, a second clamping piece is fixedly connected to the middle of the protection ring, the second clamping piece is clamped to a column body of the adjusting column, and adjustment can be conducted according to the distance between the distribution box and the ground through the connection mode of the fixed protection ring and the adjusting column; the position of the adjusting column can be flexibly adjusted according to the use environment, the number of the protection rings clamped subsequently can be increased or decreased according to the situation, the multiple protection rings are fixed to the adjusting column, and the distribution box can be protected in multiple directions.

The application belongs to the technical field of atmospheric dust pollution control, and particularly relates to a building gypsum powder dust-free production method and equipment, which comprises a gypsum powder production line, the gypsum powder production line comprises a beneficiation module, a calcination module, a crushing module, a separation module and a purification module, the purification module comprises a dust removal assembly and a desulfurization assembly, the dust removal assembly is used for dust removal treatment of flue gas generated in the production process, and then the flue gas is sent to the desulfurization assembly for desulfurization purification treatment; a cleaning cavity is arranged in the partition plate of the bag dust removal equipment, dry hot air flow is filled into the cleaning cavity at a fixed time, the humidity of the dust removal filter bag is reduced, the smoke dust impurities adhered to the dust removal filter bag are difficult to absorb water and block, the cleaning is more smooth under the action of the blowing air flow, the good passability is ensured, the dust-free purification operation of the flue gas generated in the building gypsum powder production process is smoothly carried out, the pollution to the atmospheric environment is reduced, and the processing environment of the operators is further improved.

The present invention relates to the field of textiles, and particularly to an air dust removal and collection device and method for the textile industry. It includes a dust removal and collection housing, an inlet adjustment component, a rotating mounting seat, a plurality of filter elements, and a flow guiding element; an air inlet chamber and an air outlet chamber are arranged inside the dust removal and collection housing, the two ends of the air outlet chamber are vertically arranged, one end is communicated with one side of the air inlet chamber, and the other end faces away from the side of the air inlet chamber; the inlet adjustment component is installed in the air inlet chamber and is used to adjust the opening area of the air inlet chamber; the rotating mounting seat is installed at the vertical connection of the two ends of the air outlet chamber, one side of the rotating mounting seat is located inside the air outlet chamber, and the other side is located outside the air outlet chamber, and a plurality of third mounting chambers are arranged in a circular array on the rotating mounting seat; the plurality of filter elements are respectively installed in the plurality of third mounting chambers, and the two ends of the filter element along the radial direction of the rotating mounting seat are respectively used for entering or discharging dust; the flow guiding element is rotatably installed at the center of the rotating mounting seat.

The application discloses an ultrasonic atomization dust-settling device, and belongs to the technical field of atmospheric pollution treatment equipment. The device comprises a spraying cylinder, a shunt cylinder, a flow guide assembly and an ultrasonic spraying array. One end of the spraying cylinder is an air inlet, and the other end is an air outlet. The shunt cylinder is coaxial with the spraying cylinder and is arranged in the air outlet. A cavity between the outer wall of the shunt cylinder and the inner wall of the spraying cylinder forms a wall-attached airflow cavity, and the inner side of the shunt cylinder forms a jet airflow cavity. The shunt cylinder is arranged in the spraying cylinder, and the shunt cylinder divides the airflow generated by a fan in the spraying cylinder into two paths. One path is sprayed from the wall-attached airflow cavity, and the other path is sprayed from the jet airflow cavity. An air wall that flows along the wall is formed on the inner wall of the air outlet. The water mist is blocked by the air wall and does not collide with the inner wall of the air outlet, thereby reducing the loss of the water mist when sprayed, making the sprayed water mist more dense, improving the probability of contact between dust in the atmosphere and the water mist, and reducing dust and dust suppression, thereby treating atmospheric dust pollution.

The utility model discloses an atmospheric dust fall sampling device with an anti-static function, which comprises a box body, the top of the box body is provided with a sampling cylinder and a static electricity eliminator for eliminating static electricity of the box body, a sampling cylinder is installed on the surface of the box body, a filter screen for filtering collected dust is installed inside the sampling cylinder, an electrostatic grounding mechanism is installed on the outer side face of the box body, and a grounding rod used for being grounded to release static electricity is installed on the electrostatic grounding mechanism. Meanwhile, the static electricity eliminator is connected with the grounding rod through a wire, when the grounding rod makes contact with the ground, static electricity is guided into the ground to be released, and therefore the anti-static effect of the device is guaranteed, the influence of the static electricity on the device is avoided, dust fall collected in the sampling cylinder can be filtered through a filter screen, the dust fall can be separated from impurities, and the practicability is high. And therefore, dust fall can be conveniently and directly collected, and subsequent screening treatment is not needed.

The invention relates to the field of dust falling devices, in particular to an adjustable dust falling device for urban and rural planning. In the prior art, air flow in the air easily enables dust falling on the ground to return to the atmosphere again, so that the atmosphere dust pollution is serious. According to the technical scheme, the adjustable dust falling device for urban and rural planning comprises a movable water tank, a telescopic supporting leg frame, a connecting cylinder and the like; the telescopic supporting foot frame is provided with a movable water tank, the movable water tank is provided with a water inlet used for being externally connected with a water pump, and a plurality of electric pulleys are arranged at the bottom of the movable water tank. The movable water tank and the telescopic supporting leg frame are jointly and fixedly connected with a connecting cylinder. According to the device, fog water sprayed into the atmosphere and dust making contact with the fog water are intercepted through the collecting table, and the problems that due to the fact that the fog water directly falls on the ground, the dust accumulation amount on the ground is large, airflow in the air easily enables the dust falling on the ground to return to the atmosphere again, and the atmospheric dust is seriously polluted again are solved.

The invention discloses a photovoltaic power station identification method and system based on an unmanned aerial vehicle, relates to the technical field of photovoltaic power station identification, and carefully monitors dust physical characteristics of a target photovoltaic power station through the unmanned aerial vehicle to obtain an atmospheric dust matrix index and a dust attachment potential energy index so as to accurately analyze dust washing complexity. The data driving mode can quantify the dust condition of the target photovoltaic power station, the extensive mode that the cleaning difficulty is judged only according to experience in the past is abandoned, the most suitable cleaning scheme can be accurately matched, it is ensured that the cleaning mode is highly matched with the dust characteristics in a dry-type whisk sweeping or electrostatic adsorption or chemical spraying cleaning scheme, and the cleaning efficiency is improved. The problem that the photovoltaic panel is damaged or is not cleaned thoroughly due to an improper cleaning mode is solved, the cleaning efficiency is effectively improved, and the service life of the photovoltaic panel is prolonged.

The present invention provides a device for measuring metals in retained particles of atmospheric dust, which relates to the field of atmospheric dust. The device comprises a measuring body, a wind guide plate, a functional disk, and a collection insert. The measuring body is provided with a crushing chamber opening outward, and the upper end surface of the measuring body is fixedly provided with a fixed disk, and the fixed disk is provided with a guide cavity opening upward. The present invention facilitates metal measurement by a metal measuring device by crushing retained particles of atmospheric dust, thereby further improving the efficiency of metal measurement inside retained particles of atmospheric dust. The present invention removes fine particles of atmospheric dust through airflow, thereby screening out and retaining retained particles of atmospheric dust, facilitating subsequent metal measurement. The present invention facilitates the collection of retained particles of atmospheric dust by the device and increases measurement efficiency by using a conveniently detachable collection insert and an installation base plate.

The utility model relates to the technical field of atmospheric dust fall sampling devices, in particular to an anti-overflow atmospheric dust fall sampling device capable of automatically supplementing liquid, which comprises a sampling component, a sampling port is arranged at the top of the sampling component and positioned on one side of a handle, and a storage chamber is arranged on one side of the sampling component far away from an operation panel. A sampling bottle and a liquid storage bottle are arranged in the storage chamber, a first liquid level sensor is arranged in the sampling bottle, a second liquid level sensor is arranged on one side in the liquid storage bottle, a control assembly is arranged on one side of the storage chamber, and a suction pump is arranged between the sampling bottle and the liquid storage bottle and located at one end of the mounting pipe. By arranging the first liquid level sensor, the electromagnetic valve and the control assembly, the atmospheric dust fall sampling device can automatically supplement absorption liquid into the atmospheric dust fall sampling device, the operation is simple and convenient, and the supplement amount can be effectively controlled, so that unnecessary troubles caused by overflow of the supplemented liquid can be avoided.

The present application relates to atmospheric dust sampling technology field, especially to a kind of dry and wet precipitation co-collection sampler, including guide rail, support, settling cylinder, dry precipitation counterweight, wet precipitation counterweight, dry precipitation pull rope, wet precipitation pull rope, dry precipitation cover plate, wet precipitation cover plate;The settling cylinder is provided with one support at each end;The settling cylinder includes a dry precipitation cylinder and more than one wet precipitation cylinder;Dry precipitation cylinder and wet precipitation cylinder are arranged in parallel with interval;Along the direction of settling cylinder arrangement, support top is paved with guide rail;Guide rail top is provided with dry precipitation cover plate and wet precipitation cover plate, and dry precipitation cover plate and wet precipitation cover plate are movably connected with guide rail;The one end of the dry precipitation pull rope is connected with the dry precipitation counterweight, passes through the support and the bottom of the wet precipitation cylinder, and is connected with the dry precipitation cover plate;The one end of the wet precipitation pull rope is connected with the wet precipitation counterweight, passes through the support, the bottom of the wet precipitation cylinder, and is connected with the wet precipitation cover plate.

The invention discloses a treatment mechanism for dust suppression in tunnel metamorphic rock fault breaking construction, and relates to the technical field of atmosphere dust suppression treatment. The dust suppression device comprises a dust suppression adjusting mechanism, a regulation and control supporting assembly is fixedly arranged below the dust suppression adjusting mechanism, the regulation and control supporting assembly is rotationally connected with the dust suppression adjusting mechanism, and two opening and closing assemblies are symmetrically arranged on one side face of the dust suppression adjusting mechanism. Atmospheric dust suppression is achieved through spraying of the dust suppression adjusting mechanism, meanwhile, the position of the dust suppression nozzle can be adjusted, then the spraying mode is adjusted, the supporting assembly is adjusted and controlled to drive the dust suppression adjusting mechanism to swing up and down and rotate, and then the radiation range of spraying is adjusted; the opening and closing assembly adjusts the spraying radiation range of the dust suppression adjusting mechanism in the corresponding spraying mode, position switching of the dust suppression spray heads between linear arrangement and annular arrangement is achieved, different dust suppression operation requirements are conveniently met, the size of a spraying outlet is adjusted, and pre-humidifying treatment is conveniently carried out in a specified range.

The present application relates to a kind of atmospheric dust processing device for environmental protection, including rack, rotatingly connected with mounting seat on the rack, rotatingly connected with cannon barrel on the mounting seat, the rear end of the cannon barrel is provided with fan, and electric push rod is rotatingly connected between the cannon barrel and mounting seat.The present application has the advantages that: break the traditional whole air supply structure, realize the independent control of air supply and spray in partition, solve the problem of water mist drop point concentration, uneven coverage from the root.Each row of spray pipe can be individually adjusted air intake and air speed, can independently control each row of spray distance and conveying capacity, realize gradient spray from top to bottom, form continuous, uniform, closed long narrow mist curtain.Can be freely switched between two working conditions of concentrated spray and gradient spray, can take into account the needs of concentrated dust fall and long narrow area dust fall.Avoid local water accumulation and material overwetting, realize full coverage efficient dust suppression, significantly improve dust control effect and use flexibility.

The present invention discloses a louver structure and a louver system. The louver structure includes: a frame, including an air inlet end face and an air outlet end face at both ends along the thickness direction; a first dust baffle mechanism disposed at the air inlet end face, including a plurality of first dust baffles arranged at equal intervals; a second dust baffle mechanism disposed at the air outlet end face, including a plurality of second dust baffles arranged at equal intervals; the first dust baffles and the second dust baffles are arranged in a staggered and alternating manner to block atmospheric dust particles and water droplets. By arranging the first dust baffle mechanism at the air inlet end face, the second dust baffle mechanism at the air outlet end face, arranging a plurality of first dust baffles at equal intervals in the first dust baffle mechanism, arranging a plurality of second dust baffles at equal intervals in the second dust baffle mechanism, and arranging the first dust baffles and the second dust baffles in a staggered and alternating manner; when air enters the room through the louver structure, the air flow velocity is blocked and reduced, and the dust particles and water droplets are settled and separated to avoid entering the room.

The utility model relates to the technical field of atmospheric dust fall, in particular to an atmospheric dust fall sample treatment device. According to the technical scheme, the dust collection device comprises a dust collection cylinder, a threaded pipe is fixedly connected to the bottom of the dust collection cylinder, a sleeve is in threaded connection with the interior of the threaded pipe, a telescopic groove is formed in the sleeve, a rotating rod is rotationally connected to the interior of the telescopic groove, and a wind shield is fixedly connected to the exterior of the rotating rod. The dust collecting cylinder, the threaded pipe, the sleeve, the rotating rod, the wind shield, the rubber pad, the sliding rod and the threaded pipe are matched with one another. According to the device, the wind shield is driven by wind power to change the position, the wind shield drives the sleeve and the dust collecting cylinder to move, the dust collecting cylinder rotates in the positioning pipe through the sliding rod when stressed, it is ensured that an opening of the dust collecting cylinder faces the position where wind blows, and the problem that the position of the dust collecting cylinder needs to be adjusted many times by measuring the wind direction in the past is solved; and the angle adjustment convenience of the dust collection cylinder is improved.

The invention relates to the technical field of dust removal for corrugated paper production, and discloses an atmospheric dust removal device for corrugated paper production, which comprises a holder, the top surface of the holder is fixedly connected with a treatment box, the treatment box is internally provided with a filtering mechanism, the inner wall of the treatment box is fixedly connected with an air inlet pipe, and the inner wall of the air inlet pipe is fixedly connected with an air outlet pipe. A bottom box is fixedly connected to the bottom of the treatment box, a main shaft is rotatably connected to the inner wall of the treatment box, a water spraying mechanism is arranged on the inner wall of the treatment box, a treatment mechanism is arranged on the inner wall of the treatment box, an air outlet pipe is arranged on the front side of the treatment box, and an air inlet pipe is arranged on the rear side of the treatment box; the filtering mechanism comprises a filtering bottom plate, the filtering bottom plate is fixedly connected to the inner wall of the treatment box, and an air stirring plate is fixedly connected to the circumferential surface of the main shaft. According to the device, paper scraps and paper lint floating in air in a production workshop are effectively removed, and the health and safety of production personnel are guaranteed.

The invention discloses an automatic spraying dust suppression system and method for a port. The system comprises a dust sensor, a cloud server, a PLC control cabinet and a spraying device. The plurality of dust sensors acquire dust concentration data of different positions of a target area, and the cloud server comprises a water resource scheduling module and a spraying system control module; the water resource scheduling module is used for matching corresponding water demands and spraying parameters according to the dust concentration data; the spraying system control module is used for generating a corresponding control instruction according to the spraying parameters and sending the control instruction to the PLC control cabinet; the PLC control cabinet adjusts operation parameters of the spraying device according to the control instruction; and the spraying device receives the adjusted operation parameters and carries out spraying dust suppression on different positions of the target area. According to the invention, based on the relationship among the dust concentration, the water demand and the spraying parameters, the intelligent linkage among the atmospheric dust monitoring, the spraying system and the water supply system is realized, the data function is fully excavated, and the dust suppression effect is improved.

1. The name of this design product: Atmospheric sampling tube. 2. Purpose of this design product: used for atmospheric sampling on atmospheric dust concentration detection equipment. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The utility model relates to the technical field of atmospheric dust removal, in particular to flue gas dust removal equipment for preventing and controlling atmospheric pollution, which comprises a discharge cavity and a communication cavity, the upper end of the discharge cavity is fixedly communicated with the communication cavity, and one end, far away from the discharge cavity, of the communication cavity is fixedly communicated with a gas inlet cavity; a dust removal component is installed between the air inlet cavity and the discharging cavity and comprises a sliding plate, an air bag, a supporting plate, a water flowing cavity and a collecting cavity, the two ends of the sliding plate are slidably connected to the two sides of the discharging cavity respectively, the air bag is fixedly connected between the sliding plate and the outer surface of the communicating cavity, the supporting plate is fixedly connected into the discharging cavity, and the water flowing cavity is communicated with the collecting cavity. According to the device, along with continuous horizontal reciprocating movement of the sliding plate, liquid medicine in the water storage cavity can be sprayed into the supporting plate, cooling and dust falling effects can be achieved on flue gas passing through the supporting plate and the water flowing cavity, and meanwhile acid gas in the flue gas can be neutralized through alkaline substances in the liquid medicine.

The application discloses a large air dust removal device for subway tunnel construction and belongs to the technical field of tunnel safety devices, in particular relates to a dust fall and removal device during subway tunnel construction. The device comprises a base and a water curtain mechanism, further comprises a rotary lifting mechanism, the water curtain mechanism is rotatably arranged on the base through the rotary lifting mechanism, a water curtain recovery mechanism, a sewage filtering mechanism and a sewage purification mechanism are arranged on the base, the water curtain recovery mechanism recovers the water curtain, is used for filtering of the sewage filtering mechanism and purification of the sewage purification mechanism, and the purified water reenters the water curtain mechanism. The device forms a water curtain by directly spraying water, improves the dust capture efficiency in the air, is provided with a recovery device, can recover part of the sprayed water for secondary use, reduces the waste of water source, and can also control and reduce the tunnel haze concentration.

1. Name of the product in this design: Atmospheric sampling tube. 2. Purpose of this design: for atmospheric sampling in atmospheric dust concentration detection equipment. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D rendering 1.

This invention discloses an automatic monitoring method for atmospheric dust sources based on the Environmental Satellite No. 2. By using machine learning to calculate surface reflectance, invert aerosol optical depth, and identify and classify dust sources, a rapid remote sensing monitoring method for dust sources is constructed to comprehensively and accurately reflect changes in dust source pollution. This invention not only rapidly identifies dust sources at high frequency but also meticulously classifies them, effectively guiding the precise control of dust sources. This overcomes the limitations of traditional prediction methods, such as insufficient monitoring coverage, high investment costs, and inaccurate control support, which can lead to an inability to accurately control dust sources.

To protect critical infrastructure from the adverse effects of volcanic ashfall, a natural phenomenon in Japan, we aim to provide a long-life filter system that can be used even during prolonged volcanic ashfall, and to meet the demand for proposals for volcanic ash filter systems. This system will protect major facilities and equipment from atmospheric volcanic ash or fine dust, ensure business continuity in emergencies, and protect defense facilities of national security agencies. The goal is to provide a long-life atmospheric dust filter system that blocks volcanic ash and atmospheric dust, allowing essential equipment such as cooling systems for critical machinery and facilities to always function normally. [Solution] A filter device in which a substantially corrugated filter material is attached to the filter surface, characterized in that the filter material is made of a material that prevents deformation of the attached shape of the filter material by air passing through the filter surface.