52 results about "Particulate pollution" patented technology

The invention belongs to the technical field of environmental atmospheric pollutant assessment, and discloses a method for assessing the influence of fireworks and crackers on atmospheric PM2.5, which is suitable for assessing the particulate matter pollution influence of a fireworks setting-off point source in a specific area on a surrounding environmental air quality monitoring station, and realizes PM2.5 emission diffusion simulation and traceability of centralized setting-off of fireworks and crackers. The characteristics of Gaussian diffusion, puff diffusion and computational fluid mechanics theories are integrated, PM2.5 influence evaluation of areas and cities can be achieved, firework and cracker pollution contribution key areas can be recognized, rapid response of pollution emission reduction measures can be achieved, and then more effective supervision and control over centralized setting-off of fireworks and crackers can be achieved.

The invention relates to the technical field of atmospheric pollution treatment, and discloses an urban near-surface atmospheric pollution data analysis method, which comprises the following steps: acquiring atmospheric particulate concentration time sequence data and carrying out multi-time scale component separation to obtain a first feature sequence of the atmospheric particulate concentration time sequence data under different time scales; performing dynamic time warping processing on the first feature sequence among the different monitoring stations to obtain a second feature sequence for eliminating dynamic asynchronism among the different monitoring stations; performing agglomeration hierarchical clustering processing on the second feature sequence to obtain background atmospheric particulate concentration fluctuation features; according to the background atmospheric particulate concentration fluctuation characteristics, the urban near-surface pollution process of the atmospheric particulates is analyzed. According to the method, detailed analysis of urban near-surface atmospheric particulate matter concentration change characteristics on a minute-level time scale is realized, a reliable technical basis is provided for screening an exogenous particulate matter pollution process, and the efficiency and accuracy of atmospheric pollution analysis are improved.

The invention belongs to the technical field of atmospheric monitoring, particularly relates to an atmospheric environment particulate matter pollution monitoring device and a monitoring method, and aims to solve the problems that only gas at a fixed position and a fixed height can be monitored in the prior art, and impurities such as fluff and fine sand in the air are attached to an air collecting device to affect later atmospheric monitoring. According to the scheme, the device comprises a mounting column, a mounting frame is fixed to the outer wall of the mounting column, a monitoring box is fixedly mounted at the top of the mounting frame, and ray instruments are fixedly embedded in the inner wall of the top and the inner wall of the bottom of the monitoring box; according to the gas collection device disclosed by the invention, the collection ring can be driven to rotate and lift synchronously through rotation of the rotating shaft, so that gas collection can be carried out in different directions and at different heights, and the detection precision is improved; and gas injection and gas exhaust can be alternately carried out in the reciprocating movement process of the movable plate, and gas monitoring is continuously carried out.

The invention provides an atmospheric environment particulate matter pollution detection method and device, and the method comprises the steps: carrying out the grading analysis of the scattered light intensity at each environment detection point in an environment pollution detection region, and obtaining the particle size distribution characteristics of air particulate matters at each environment detection point in a plurality of particle size intervals; determining a spatial distribution field of the particulate matter concentration in the air based on the particle size distribution characteristics; determining a dynamic correction factor of diffusion and aggregation of particulate matters in the air according to an atmospheric physical state, and further performing dynamic correction on the spatial distribution field based on the dynamic correction factor; performing spatial reconstruction on the spatial distribution field obtained by dynamic correction on a regular grid, and determining the distribution pattern of the air particulate matter concentration in the environmental pollution detection area according to a reconstruction result; and generating a particulate matter pollution index in the environmental pollution detection area according to the distribution pattern. By adopting the scheme of the invention, the reliability of atmospheric environment particulate matter pollution detection can be improved based on particulate matter concentration space reconstruction of multi-point dynamic correction.

The invention discloses a self-suction type magnetic suspension pumping device which comprises a magnetic suspension pump, a self-suction pump and a controller, the magnetic suspension pump comprises a pump head and a magnetic suspension motor, the pump head is provided with a first inlet and a first outlet, the self-suction pump is provided with a second inlet and a second outlet, and the second inlet of the self-suction pump is connected with the first outlet of the magnetic suspension pump in series; the controller is configured to control the working states of the magnetic suspension pump and the self-priming pump, and the self-priming pump is configured to suck a medium in a pump head of the magnetic suspension pump to form negative pressure, so that to-be-conveyed fluid enters the pump head through the first inlet, and the magnetic suspension pump completes self-priming; after the magnetic suspension pump completes self-absorption, the output fluid is subjected to follow flow through the follow flow bypass; or after the magnetic suspension pump completes self-priming, the output fluid flows through the straight-through flow channel of the self-priming pump. According to the invention, the self-absorption function of the magnetic suspension pump is realized on the premise of not influencing the original performance of the magnetic suspension pump and not introducing particulate matter pollution or increasing shear force in the ultra-clean environment application of biological medicine or semiconductor manufacturing and the like.

A smoke filtering method using smoke drainage includes: a smoke collecting box and a rotating plate, wherein the smoke collecting box is divided into a filter chamber and an adjustment chamber by a partition plate, and a fixed frame is fixedly connected to a fixed groove opened in the filter chamber by a mosaic plate, and a diversion groove is opened at the upper end of the fixed frame, and drainage grooves are symmetrically opened at the bottom of both sides of the diversion groove, and a filter screen is fixedly connected to the middle of the fixed frame, and the rotating plate is movably connected in the adjustment chamber, and the inner cavity of the rotating plate is connected to the inner cavity of the partition plate through a through hole, and the side of the rotating plate away from the partition plate is fixedly connected to the main rotating rod, and the main rotating rod is movably connected to the smoke collecting box through a bearing, and a storage groove is symmetrically opened on the side of the adjustment chamber, and a positioning block is slidably connected in the storage groove by a spring and a fixed rod. The present invention can enhance the filtering effect of the device on dust particles in smoke and reduce the probability of dust particles polluting the environment through the cooperation of the fixed frame, the filter screen, the drainage groove and the diversion groove.

The invention belongs to the technical field of back contact batteries, and discloses a preparation method of a back contact battery anti-reflection film for improving silicon nitride dust. The method comprises the following steps: feeding a silicon wafer into PECVD (Plasma Enhanced Chemical Vapor Deposition) equipment, sequentially heating, keeping constant temperature, vacuumizing and keeping constant pressure, introducing ammonia gas for ionization, vacuumizing after ionization is finished, and completing pre-film cleaning of the silicon wafer; sequentially depositing three layers of silicon nitride films; and finally, nitrogen is introduced for membrane back-blowing. Before the silicon nitride film layer is deposited, the ionized ammonia gas is used for performing pre-film cleaning on the silicon wafer, so that the problem of dust particulate matter pollution before deposition can be effectively improved; after the three silicon nitride film layers are deposited, nitrogen is introduced to perform post-film purging and cleaning on the silicon wafer, so that the post-film dust particulate matter pollution problem can be effectively improved.

The utility model discloses an atmospheric environment particulate matter pollution monitoring device which comprises an energy storage assembly, the energy storage assembly comprises an energy storage bin, a driving motor is arranged on the outer wall of the top of the energy storage bin, a transmission shaft is connected to the top of the driving motor, a mounting base is arranged on the top of the transmission shaft, and a rotating motor is arranged on the outer wall of one side of the mounting base. One end of the rotating shaft rotatably penetrates through the mounting seat, one end of the rotating shaft is provided with an adjusting frame, the top of the adjusting frame is provided with a solar panel, the outer wall of one side of the energy storage bin is provided with a supporting frame, the top of the supporting frame is provided with a detection head, and one side of the energy storage bin is provided with an adjusting assembly used for supporting the device and adjusting the height. A dust falling assembly used for falling dust is arranged on one side of the energy storage bin and comprises a conveying pump, the conveying pump is fixed to the outer wall of one side of the energy storage bin, the top of the conveying pump is connected with an atomizing nozzle, and the bottom of the conveying pump is connected with a water supply port.

The invention discloses a road air particulate matter monitoring and early warning method and system, and the method comprises the steps: receiving multi-source data of a fixed monitoring network, a mobile monitoring network and a video monitoring network, and carrying out the differential self-verification and adaptive calibration of the mobile monitoring data; performing space-time alignment fusion on the calibrated data and fixed and video data to construct a unified space-time data cube; identifying a pollution behavior based on the fusion data and detecting a particle concentration peak value, and performing correlation matching on the two to generate a candidate traceability event; when the composite early warning condition is met, the structured early warning information is automatically triggered and pushed; according to the invention, a cooperative sensing system of fixed vertical monitoring, mobile dynamic sensing and video monitoring is constructed, and adaptive calibration and artificial intelligence visual identification are combined, so that a complete technical closed loop from data acquisition, fusion analysis to traceability early warning is formed; full-process automatic management of monitoring, analysis, tracing and early warning of road particulate matter pollution is achieved, and the intelligent level and response efficiency of urban road environment management are improved.

The invention relates to the technical field of atmospheric pollution monitoring, and provides an atmospheric environment particulate matter pollution monitoring method and system based on multi-source data fusion. The method comprises the following steps: accessing an industrial management database, and establishing a pollution source data set; a sensing grid is configured in the target area, multi-source monitoring identification of atmospheric pollution is carried out, and a pollution identifier is established; configuring an unmanned aerial vehicle flight task according to the pollution identifier, executing flight operation and establishing an additional data set; reconstructing an identifier according to the additional data set, and performing association matching in combination with the pollution source data set; and performing traceability evolution authentication according to a matching result, and reporting a pollution monitoring result, so as to solve the technical problems that the dynamic traceability precision of a pollution source is low and a pollution evolution process cannot be comprehensively and accurately reflected due to insufficient integration of multi-source heterogeneous data in existing atmospheric pollution monitoring. The technical effects that accurate monitoring and positioning of atmospheric environment particulate matter pollution are achieved through cooperation of multi-dimensional data fusion and unmanned aerial vehicle dynamic monitoring, and the traceability of the pollution source is improved are achieved.

The invention provides a gas tank, thin film deposition equipment, a control method and a storage medium. The gas tank comprises a tank body, a cold air pipeline, a vaporization detector and a controller. An air inlet is formed in the box wall of the box body, and a vaporizer of a precursor is arranged in the box body. The first end of the cold air pipeline is connected with a cold air source, the second end of the cold air pipeline is connected with the air inlet of the box body, and a valve is arranged in the cold air pipeline. And the vaporization detector is configured at a gas outlet of the vaporizer. The controller is connected with the valve and the vaporization detector, and is configured to obtain the vaporization rate of the vaporizer to the precursor through the vaporization detector; and the opening degree of the valve is adjusted according to the vaporization rate, so that the environment temperature in the box body is adjusted. The vaporizing rate of the vaporizer to the precursor can be detected, the opening degree of the valve of the cold air pipeline is adjusted accordingly, sufficient vaporizing of the vaporizer to the precursor is ensured, and the problem that particle pollution is introduced into the process chamber due to insufficient vaporizing is avoided.

The utility model discloses an automatic polishing mechanism for material tray landing legs, which comprises a base, a negative pressure box, a support, an abrasive belt and a first lifting driving mechanism, the negative pressure box is transversely arranged on the base in a liftable manner, the support is arranged on the base and located on the rear side of the negative pressure box, a workbench capable of longitudinally sliding is arranged at the top of the negative pressure box, and the abrasive belt is arranged on the workbench. Dust collection holes communicated with the negative pressure box are formed in the workbench at intervals, a sliding rail located above the workbench is horizontally arranged on the front face of the support, sliding bases are arranged on the sliding rail at intervals, the first lifting driving mechanism is vertically arranged on the sliding bases, and idler wheels or pressing blocks are arranged at the bottom of the first lifting driving mechanism. The abrasive belt is rotatably arranged on the support, and the bottom of the abrasive belt passes through the position below the first lifting driving mechanism. By means of the mode, the automatic polishing mechanism for the material tray supporting legs improves the automation level and efficiency, and avoids the problem that particulate matter pollutes the surrounding environment.

The utility model discloses a kind of alternative fuel preburning furnace device, it is related to alternative fuel incinerator technical field, including preburning furnace, the feed inlet connected in preburning furnace one side, the tertiary air inlet connected in preburning furnace top and the exhaust port being set in preburning furnace top one side, one end of the exhaust port is fixedly connected with filter box, the inside fixed mounting of filter box has filter plate, the one side of filter plate movably is provided with brush head, the top fixed mounting of filter box has rotating motor;In the utility model, by setting rotating motor, drive brush head moves in filter box, the residue particles filtered by filter plate are cleaned, and by belt pulley drive driving bevel gear transmission to driven bevel gear, make cam rotate in filter box, protruding block and filter plate abut, residue particles are conveniently dropped to ash box, residue particles are collected and prevented from being discharged to air with waste gas, reduce particulate pollution.

This invention discloses a quantitative assessment method for the impact of meteorological conditions on atmospheric particulate matter pollution. Through modeling, historical data on wind speed, humidity, temperature, and mixing layer height can be used to scientifically predict the future trend of pollutant concentrations. This invention's quantitative assessment method for the impact of meteorological conditions on atmospheric particulate matter pollution constructs a quantitative assessment model of the impact of meteorological conditions on particulate matter pollution through the analysis of experimental data. This model can accurately assess the degree of influence of meteorological conditions, providing effective assistance for the control of atmospheric particulate matter pollution.

This invention discloses the application of a heteropoly compound / PVA composite in water retention of sandy soil. The invention prepares the heteropoly compound / PVA composite by mixing polymer polyvinyl alcohol with a Standberg-type heteropoly compound or its derivatives, which is then used for water retention in sandy soil. The heteropoly compound / PVA composite of this invention can significantly improve the water and fertilizer retention capacity of sandy soil, and has high adhesion ability. It can withstand strong winds in arid regions, is not easily blown away and loses its effectiveness, and will not disperse into the air causing particulate pollution. After gradually losing water, the sand amendment forms a porous membrane on the surface of the gravel, maintaining the soil's aeration and permeability, and plays a positive role in the restoration of degraded soils in desert areas.

The utility model relates to the technical field of crop by-product processing, in particular to a rice hull crushing and grinding device which comprises a shell, a main shaft, a grinding disc, a roller, a scraping plate and a lifting shaft, and the lifting shaft and the main shaft are arranged in the center of the grinding disc in a synchronous bidirectional rotation manner. The rollers and the scrapers are transversely arranged above the grinding disc at intervals around the main shaft, the rollers are rotatably connected with the main shaft along the axis perpendicular to the main shaft, and the scrapers are fixedly connected with the lifting shaft. A gap exists between the shell and the peripheral wall of the grinding disc, and the scraper is provided with a first scraping face arranged in the radial direction of the grinding disc and a second scraping face forming an included angle with the radial direction of the grinding disc. The device is simple in structure and convenient to install. According to the device, material flattening and automatic discharging can be achieved, meanwhile, the situation that ground rice hull powder is dispersed into air to form particulate matter pollution is effectively prevented, collection of the rice hull powder is facilitated, and the device has positive test and production significance.

The utility model discloses an ammonium sulfate drying, spraying and water replenishing system which comprises a belt conveyor, a drying bed main body, a heat exchanger, a cyclone dust collector, a water washing dust collector and an evaporation raw water tank, one end of the heat exchanger is connected into heat source steam, the other end of the heat exchanger is connected into a condensation bolt pipe network, the heat exchanger inputs air through the air blower for heat exchange to form hot air, and the hot air enters the drying bed main body, passes through the cyclone dust collector and then passes through the washing dust collector for secondary dust removal. The system has the beneficial effects that the problems of tail gas dust and smell in the ammonium sulfate drying process can be solved, the problems of dust particles and hot gas drifting in the tail gas are solved, crystals in the tail gas are recycled, and particulate matter pollution caused by direct exhaust of the tail gas is reduced; the problem that other water is introduced is effectively avoided, the evaporation water amount of the system is reduced, and water resource consumption of a large amount of spraying water is avoided.

The present invention discloses a lead-acid battery material crushing and recycling device, which relates to the technical field of battery recycling. The device comprises a crushing frame, an anti-leakage device and an auxiliary device, wherein a placement frame is fixedly installed on the inner wall of the crushing frame, a crushing device is rotatably installed inside the crushing frame, and a filter plate is fixedly installed on the surface of the placement frame, wherein the anti-leakage device comprises a blanking frame, a blanking plate, a placement plate, an air frame, an air plate, a semicircular plate, an air rod and a support plate, so that the lead-acid battery to be crushed falls into the crushing frame for crushing, the blanking frame is fixedly installed on the top of the crushing frame, the blanking plate is hingedly installed on the inner wall of the blanking frame, and the placement plate is fixedly installed on the top of the inner wall of the crushing frame. Slowly entering the crushing frame helps to reduce the scattering of dust and fragments generated during mechanical crushing, which is beneficial to controlling particulate pollution in the environment and preventing harmful substances from spreading to surrounding areas.

The utility model relates to the technical field of ventilation cabinets, and discloses a ventilation cabinet with a circulation function, which comprises a ventilation cabinet body, a support plate is fixed on the front surface of the ventilation cabinet body, support legs are fixed on the bottom surface of the ventilation cabinet body, and a purification device is fixed on the upper surface of the support plate. The ventilation cabinet body is provided with a sterilization device. The ventilation cabinet with the circulation function can remove particulate matters, pollutants and harmful gases in the air, so that the indoor air quality is remarkably improved, peculiar smell in the air can be removed, a healthy, comfortable and clean indoor environment can be created, bacteria and viruses in the air can be effectively killed, dependence on external air is avoided, and the ventilation cabinet with the circulation function is worthy of popularization and application. Indoor air can be effectively treated and improved, so that the indoor air can be recycled, energy consumption and air pollution are reduced, loads of an air conditioner and a heating system are reduced, and energy consumption and operation cost are reduced.

The invention discloses an automobile chassis cooling and shaping mold, and relates to the technical field of automobile chassis machining equipment.The automobile chassis cooling and shaping mold comprises a cooling base and further comprises a lower mold body installed on the top of the cooling base The automobile chassis cooling and shaping mold has the beneficial effects that the cooling base and an upper mold body are arranged, and a refrigeration water tank is used for providing a water source; the temperature change in the cooling base is detected in real time through a temperature sensor, and early warning processing is performed through an external buzzer; the heat dissipation mechanism and the cooling mechanism are arranged, high-temperature gas in the shaping plate can be recycled into the cooling box, the auxiliary cooling effect is achieved through heat absorption and circulating water change of a condensate pipe, and the formed equipment is subjected to two-time heat dissipation and auxiliary cooling forming treatment through the cooperation; and pollution caused by dust particles in air is avoided, the overall forming efficiency is improved, the situation that equipment is in a high-temperature state for a long time is reduced, the field operation equipment is protected to a certain degree, and the service life of the field operation equipment is prolonged.

This invention belongs to the field of ambient air quality forecasting technology, and relates to a method and system for forecasting and evaluating atmospheric fine particulate matter pollution processes. The method includes: 1) data acquisition and processing; 2) calculating level accuracy, pollution hit rate, trend consistency rate, and peak accuracy; 3) calculating a comprehensive score of the forecast effect based on level accuracy, pollution hit rate, trend consistency rate, and peak accuracy; 4) analyzing all PM2.5 concentrations within the target time period in the city. 2.5 The forecast effectiveness of each pollution process is calculated into a comprehensive score, and these scores are categorized to allow for horizontal comparison of the forecast effectiveness of different pollution processes. By constructing a comprehensive scoring method based on multi-dimensional evaluation indicators, it can achieve the assessment of PM2.5 levels. 2.5 A quantitative assessment of the overall forecasting effectiveness of pollution processes, filling the gap in PM2.5 prediction. 2.5 There is a lack of comprehensive evaluation methods for the effectiveness of pollution process forecasting.

The utility model provides a waste heat recovery device and a steaming oven comprising the same, the waste heat recovery device is used for the steaming oven, the waste heat recovery device comprises a heat exchange pipe and a water tank, the water tank comprises a water inlet and a water outlet, the water inlet is communicated with a water source, the heat exchange pipe is arranged in the water tank, and the inlet end of the heat exchange pipe is communicated with an exhaust port of the steaming oven; the waste heat recovery device further comprises a filtering device, the filtering device is arranged below the water tank, and the outlet end of the heat exchange pipe is communicated with the filtering device. A heat exchange pipe is arranged in the water tank, heat exchange water in the water tank can make full contact with the heat exchange pipe, the inlet end of the heat exchange pipe communicates with an exhaust port of the steaming oven and is used for receiving hot waste gas generated when the steaming oven works, and the hot waste gas exchanges heat with the heat exchange water in the water tank through the heat exchange pipe. The filtering device is arranged, waste gas obtained after heat exchange is completed is filtered and then exhausted, oil smoke particles in the waste gas are prevented from polluting air, and oil smoke purification of the steaming and baking waste gas is achieved.

The invention discloses a health effect oriented atmospheric particulate pollution source management and control scheme design method based on an isotope ratio. The method comprises the following specific implementation steps: 1, integrating an isotope ratio, a meteorological parameter, an ecological environment factor, a social economic parameter and health data, performing one-to-one matching of space-time positions, and establishing an isotope ratio prediction model through a machine learning algorithm; 2, establishing a pseudo-Poisson distribution generalized addition model of the isotope ratio and the disease burden and death rate of the crowd, and analyzing a health condition change condition corresponding to a unit isotope change; and a third step, performing health risk traceability analysis by adopting a Bayesian algorithm coupled with a Monte Carlo algorithm, quantifying contribution degrees of different pollution sources to health influences, and further formulating a health effect-oriented accurate management and control scheme. According to the method, the traceability advantage of the isotope fingerprints is combined with the crowd health effect, the nonlinear relation between the isotope ratio and the crowd health effect is quantitatively analyzed, and technical support is provided for scientifically formulating a health effect oriented atmospheric pollution prevention and treatment strategy.

The present invention relates to the technical field of air pollution control, and discloses a method for analyzing urban near-surface air pollution data. The method includes obtaining time series data of atmospheric particulate matter concentration and performing multi-time scale component separation to obtain a first feature sequence of the time series data of atmospheric particulate matter concentration at different time scales; performing dynamic time warping processing on the first feature sequences between different monitoring stations to obtain a second feature sequence that eliminates the dynamic asynchrony between different monitoring stations; performing agglomerative hierarchical clustering processing on the second feature sequence to obtain the fluctuation characteristics of the background atmospheric particulate matter concentration; and analyzing the pollution process of atmospheric particulate matter on the urban near-surface according to the fluctuation characteristics of the background atmospheric particulate matter concentration. The present invention realizes a detailed analysis of the change characteristics of urban near-surface atmospheric particulate matter concentration on a minute-level time scale, provides a reliable technical basis for screening exogenous particulate matter pollution processes, and improves the efficiency and accuracy of air pollution analysis.

The utility model relates to the technical field of dust collection devices, and provides a protective dust collection device for a laser marking machine, which comprises a shell arranged on one side of the laser marking machine. The filter layer is arranged in the shell and divides the shell into a first cavity and a second cavity, the first cavity is provided with a first air inlet and a first air outlet, and the first air outlet is communicated with a negative pressure device; the air inlet pipe is arranged in the shell, one end of the air inlet pipe extends out of the first air inlet, and the other end of the air inlet pipe is positioned in the second cavity; the dust hood is arranged on the outer side of a lens of the laser marking machine and communicates with one end of the air inlet pipe. According to the technical scheme, the problem that in the prior art, a laser marking machine can generate a large number of particles in the using process, and a lens of the marking machine is polluted is solved.

The utility model relates to the technical field of traditional Chinese medicine decoction piece processing equipment, in particular to traditional Chinese medicine decoction piece processing equipment with a drying function, which comprises a drying box, a plurality of electric heating pieces are fixedly assembled on the inner wall of the drying box, an air pump is fixedly assembled on the outer wall of the drying box, the exhaust end of the air pump is fixedly communicated with an exhaust pipe, and the exhaust pipe is communicated with the drying box. A processing box is fixedly assembled on the upper surface of the drying box, the side wall of the processing box fixedly communicates with a connecting pipe, the connecting pipe communicates with the drying box, the upper surface of the processing box fixedly communicates with a round frame, and the upper surface of the round frame fixedly communicates with an extension pipe. According to the traditional Chinese medicine decoction piece drying box, by arranging the filter plate, the filter element and other components, when traditional Chinese medicine decoction pieces are dried, the filter plate can block particulate matter with large size in air, the filter element can adsorb and filter fine particulate matter in the air, the filtering effect is guaranteed, the situation that the particulate matter pollutes the environment is prevented, and the practicability of the drying box is improved.

The invention discloses a near-surface particulate matter pollution monitoring method based on multi-task deep learning, belongs to the technical field of particulate matter pollution monitoring, is used for particulate matter pollution monitoring, and comprises sample processing and construction and model construction and training. The sample processing and construction comprises the steps of obtaining ground observation data, obtaining PM concentration, performing space-time matching in combination with a multi-task sample data set, and performing preprocessing on a space-time matching result in combination with stationary meteorological satellite observation data and auxiliary data; the model construction and training comprises the steps of constructing a multi-task deep learning model and training the multi-task deep learning model, the multi-task deep learning model is based on a full-connection neural network, and an output layer of the multi-task deep learning model is divided into two branches which are respectively used for two PM inversion; a double-task loss function is introduced in the training process of the multi-task deep learning model.

The present invention discloses an air environment particulate matter pollution monitoring device, which relates to the technical field of air monitoring devices and includes a support member, a backflush member, a cleaning member, and a movable member. In the present invention, by using the backflush assembly, the driving motor can drive the first lead screw to rotate, the first lead screw drives the movable disc to move downward, the movable disc moves downward to squeeze the airbag, so that the gas inside the airbag moves through the movable disc into the filter membrane and is discharged outward from the inside of the filter membrane. During the process of the gas being discharged outward, the particulate matter attached to the outer surface of the filter membrane can be moved outward, realizing the backflush of the filter membrane. And when the movable disc is separated from the airbag, the airbag can automatically expand and inflate, thereby performing multiple backwashes on the filter membrane, which can avoid the need to replace the filter membrane after each use, reduce the time and cost of filter membrane replacement, accelerate the speed of multiple measurements, and enable the filter membrane to be recycled.

The application relates to the technical field of atmospheric pollution monitoring, and provides a method and system for monitoring atmospheric environmental particulate matter pollution based on multi-source data fusion. The method comprises the following steps: accessing an industrial management database to establish a pollution source dataset; configuring a sensing grid in a target area to perform multi-source monitoring and identification of atmospheric pollution and establish a pollution identifier; configuring a flight task of a UAV according to the pollution identifier, performing flight operation, and establishing an additional dataset; reconstructing the identifier according to the additional dataset, and performing correlation matching in combination with the pollution source dataset; performing source tracing evolution authentication according to the matching result, and reporting a pollution monitoring result, so that the technical problem that the dynamic source tracing accuracy of pollution sources is low and the pollution evolution process cannot be comprehensively and accurately reflected due to insufficient integration of multi-source heterogeneous data in existing atmospheric pollution monitoring is solved, the technical effect that accurate monitoring and positioning of atmospheric environmental particulate matter pollution are realized through multi-dimensional data fusion and dynamic monitoring of a UAV is achieved, and the source tracing capability is improved.

The utility model relates to the technical field of plastic tableware raw material stirring equipment, in particular to a raw material stirring device for plastic tableware processing, which comprises a tank body, a wear-resistant layer is attached to the inner wall of the tank body, and a sound insulation layer is attached to the outer side of the tank body; the stirring mechanism is arranged in the tank body; the supporting legs are arranged on the lower portion of the tank body, and dampers are arranged on the lower portions of the supporting legs; the raw material stirring device solves the problem that a traditional raw material stirring device cannot relieve noise pollution and particulate matter pollution.