1989 results about "Dust pollution" patented technology

The invention is suitable for the technical field of flying dust monitoring, and provides a road construction site all-weather flying dust online monitoring method and system, and the method comprises the following steps: collecting flying dust data and wind power information through a sensor; the particulate matter concentration is judged, and the particulate matter concentration exceeding the standard and the corresponding coordinate position, wind speed data and wind direction data are screened out; determining a flying dust source area according to the coordinate position, the wind speed data and the wind direction data; a road transportation monitoring video is called, and the area where the transportation vehicle is located is determined according to the time information and the road transportation monitoring video; a road construction map is called, and the area where the transport vehicle is located is marked in the road construction map; and comparing and analyzing the flying dust source area with a road construction map, determining a potential flying dust source position, and sending the potential flying dust source position to an inspection terminal. According to the invention, the flying dust pollution source can be accurately tracked, and the inspection personnel can quickly position the potential flying dust pollution source according to the information.

An energy-saving and environment-friendly park air monitoring device, comprising a stand (1), a detection apparatus body (2) being mounted on the stand (1) by means of a first mounting bracket, and a solar panel (3) being further mounted on the stand (1) by means of a second mounting bracket. A filter cylinder (21) is mounted on the detection apparatus body (2), a plurality of openings (4) being formed in the filter cylinder (21), a filter plate (5) being fixedly mounted in the openings (4). A dual-shaft motor (6) is fixedly mounted at the bottom of the filter cylinder (21). When dust and impurities adsorbed and accumulated on the filter plate (5) need to be removed, the dual-shaft motor (6) is started, the two output ends of the dual-shaft motor (6) rotate to drive a L-shaped rod (7) and a driving gear (8) to rotate synchronously, and the rotation of the L-shaped rod (7) can drive a cleaning brush (9) to clean the filter plate (5). In addition, by means of a transmission mechanism, the kinetic energy from the driving gear (8) can be transmitted to a blocking mechanism, so as to drive the blocking mechanism to rotate for blocking the openings (4), such that the dust raised during cleaning of the filter plate (5) is prevented from passing through the filter holes in the filter plate (5) and entering the filter cylinder (21), thereby avoiding contamination of a detection probe by the dust during the cleaning of the filter plate (5), and achieving a protective effect on the detection probe.

The invention relates to the technical field of urban road construction, in particular to an intelligent flying dust monitoring and dust falling control system for urban road construction, which comprises a flying dust monitoring module, a dust falling control module, a dust falling control module and a dust falling control module, the data fusion processing center is used for processing the monitoring data and generating a dust fall control instruction; the intelligent dust falling execution module is used for triggering a dust falling device according to the instruction; the cloud platform and the mobile terminal are used for storing the monitoring data, visually displaying the flying dust thermodynamic diagram and pushing standard exceeding early warning information to management personnel; data are collected in real time through the flying dust monitoring module, a flying dust pollution source and the diffusion trend of the flying dust pollution source are recognized in combination with the dynamic analysis and prediction capacity of the data fusion processing center, the intelligent dust falling execution module is used for triggering dust falling measures, and meanwhile remote monitoring and early warning are achieved through the cloud platform and the mobile terminal. The problem of response lag in a traditional method is solved, and the control efficiency is improved.

The invention relates to the technical field of pollution traceability, in particular to a harbor storage yard dust pollution traceability method and system, and the method comprises the following steps: collecting the real dust concentration and dust diffusion influence factors of different monitoring points in a harbor storage yard, and constructing a dust diffusion evaluation model; when the position of the pollution source is not determined, obtaining the position and the source intensity of the pollution source by using an improved sparrow search algorithm based on the real dust concentration, the dust diffusion influence factors and the dust diffusion evaluation model; obtaining a matrix estimation formula for defining an inverse Gaussian function according to a least square method estimation method, and further defining the inverse Gaussian function according to the dust diffusion evaluation model; when the position of the pollution source is determined, the source intensity of the pollution source is obtained based on an inverse Gaussian function according to the real dust concentration and the dust diffusion influence factors. According to the invention, a large amount of monitoring equipment which is high in cost and complex in installation and maintenance does not need to be installed, and the position and the source intensity of the pollution source of the port storage yard can be traced intelligently, accurately and efficiently.

The invention discloses a building engineering management system and management method, and relates to the technical field of construction dust risk management. Dust monitoring points are arranged in a construction site, dust related parameters of a plurality of dust monitoring areas are monitored in real time, a diffusion data set and a mechanical operation distribution data set are combined, and construction dust risk management is performed. And carrying out deep calculation on the data by utilizing a neural network technology, and accurately obtaining the ground dust raising intensity, the mechanical operation dust raising index and the material storage dust raising diffusion ratio of each dust raising monitoring area. And performing association to obtain a regional dust raising comprehensive index Yczsi of the ith dust raising monitoring region, and then performing evaluation to automatically generate a risk grading result. According to the intelligent evaluation based on the data, errors caused by manual estimation are avoided. And according to the grading result, the system can automatically adjust dust raising control measures, such as watering, dust screen setting or construction plan adjustment, so that reasonable control measures are adopted in different risk grade areas, and the generation of dust raising pollution is further reduced.

The invention belongs to the technical field of fire detection, and particularly discloses a smoke sensor labyrinth optimization design and dust pollution resistance method, which comprises the following steps: detecting corresponding smoke and dust fusion particles and water vapor particles in an air detection area through a signal transmitting device; water vapor particles are screened to weaken smoke alarm triggered by mistake caused by the water vapor particles, a differential signal processing technology is adopted to distinguish and identify fusion particles, meanwhile, the fusion particles are introduced into a labyrinth measuring cavity, the concentration of smoke and dust is measured in the labyrinth measuring cavity, and the detection stability is enhanced; the width of a labyrinth channel in a labyrinth measuring cavity is automatically adjusted according to the smoke concentration to carry out space division of smoke particles and dust particles, so that the adaptability of the detector to a complex environment is improved; the smoke concentration in the labyrinth measuring cavity is subjected to fire early warning judgment, the cleaning device additionally arranged in the labyrinth measuring cavity is started according to the smoke concentration and the dust concentration for cleaning treatment, and the detection continuity is improved.

The invention discloses an air blowing and dust collection mechanism, a laser cutting device and an air blowing and dust collection method.The air blowing and dust collection mechanism comprises a dust collector, a dust collection cover, a dust collection pipeline and an air outlet module, the dust collection cover forms a first dust collection cavity with an opening facing a cutting station, and the dust collection pipeline is provided with an injection air channel and a dust collection air channel; the air flow in the injection air channel is used for injecting the air flow in the dust collection air channel, the dust collection air channel communicates with the first dust collection cavity and a dust collection opening of the dust collector, the air inlet end of the dust collection air channel is arranged close to an opening of the first dust collection cavity, and the air outlet module is used for conveying the air flow to the injection air channel and the cutting station. According to the air blowing and dust collection mechanism, waste chippings can be prevented from splashing while generation of the waste chippings is reduced, the suction effect on dust, smoke, the waste chippings and the like is improved, then the dust can be prevented from polluting the working environment, and the body health of workers can be guaranteed.

The invention discloses a mirror surface paperboard slitting device and method. The device comprises a treatment bin, an air flotation conveying mechanism, a slitting mechanism and a dust collection body. The air floatation conveying mechanism sprays an air film to the bottom face of the paperboard through a first air conveying structure and a second air conveying structure which are symmetrically arranged, and sprays an air film to the top face of the paperboard through a first air pressure structure and a second air pressure structure, and double-face non-contact conveying is achieved. The slitting mechanism adopts a servo motor to drive a helical tooth column for meshing transmission, a belt pulley transmission main body drives a blade to rotate, and vertical and front-back position adjusting assemblies are integrated and matched with a blade bottom cambered surface supporting wheel to provide anti-deformation support; the dust collection body is arranged in a front-arranged mode to absorb slitting dust in real time. The method comprises the steps of paper jam release, double-sided air flotation starting, limiting adjustment, multi-dimensional slitting control, synchronous dust collection and finished product storage. The problems of mirror surface damage, insufficient slitting precision and dust pollution are solved, and the slitting quality and efficiency are remarkably improved.

The invention relates to a raised dust pollution source image enhancement processing method and system, and the method specifically comprises the following steps: collecting a raised dust pollution source image and environment parameters, and marking a raised dust region and a background to construct a data set; estimating image illumination and reflection components by using multi-scale Gaussian kernel convolution, fusing the image illumination and reflection components to obtain an enhanced image, enhancing the contour through adaptive morphological operation, and generating a morphological enhanced image; real raised dust texture is injected through random deformation field elastic transformation in combination with texture synthesis, and a synthetic enhanced image is obtained; constructing an image enhancement model, inputting a synthetic enhanced image, extracting multi-scale features by an encoder, enhancing the features by a decoder, reserving boundaries, optimizing the model in combination with a loss function, enhancing an output result through region self-adaptive fusion, and completing model training; and finally, inputting a newly acquired image into the trained model to generate a final enhanced flying dust pollution source image. The flying dust image quality is improved, features are accurately extracted, and pollution source identification and monitoring are assisted.

The invention belongs to the technical field of brake discs, and relates to a cast iron brake disc ceramic reinforced iron-based wear-resistant coating and a preparation method thereof.The cast iron brake disc ceramic reinforced iron-based wear-resistant coating comprises a brake disc base body, an iron-based transition coating and a composite wear-resistant coating, the composite wear-resistant coating is formed by mixing iron-based alloy powder, B4C ceramic particles and CeO2 rare earth powder; the preparation method comprises the following steps: 1, carrying out laser cladding on iron-based alloy powder on a brake disc substrate to prepare an iron-based transition coating; 2, carrying out ball milling and mixing according to a weight ratio to prepare composite wear-resistant mixed powder; 3, performing laser cladding on the iron-based transition coating with composite wear-resistant mixed powder; the B4C + CeO2 ceramic particles are mixed into the iron-based alloy powder, so that microcracks of the brake disc coating are reduced, the wear resistance and hardness are improved, dust pollution is reduced, the service life is prolonged, and the friction performance better meets the brake disc strengthening requirement.

The invention discloses a dust suppression method and system for railway track dry bulk cargo loading. The method comprises the steps that if it is detected that loading operation is started on an iron road trunk line, an area to be subjected to dust suppression is determined based on loading operation field data; acquiring environment information corresponding to the region to be subjected to dust suppression, wherein the environment information comprises wind direction information; determining a to-be-loaded article based on the loading field operation data, and determining the moisture content corresponding to the to-be-loaded article; and a control strategy corresponding to the spraying system is determined based on the wind direction information, the water content and the area corresponding to the area to be subjected to dust suppression, and operation parameters corresponding to the spraying system are adjusted based on the control strategy so as to perform dust suppression treatment on the loading operation process. According to the invention, accurate treatment of railway track loading flying dust pollution is realized, limitation of traditional fixed dust suppression is broken through, and pollution prevention and control efficiency and resource utilization efficiency are remarkably improved.

The invention discloses a sand and dust pollution health risk early warning terminal and early warning method, and the method comprises the steps: obtaining multi-source input data, such as meteorological parameters, sand and dust pollutant concentration and geographical environment, in real time, and carrying out the preprocessing through a data fusion algorithm, thereby obtaining a standardized data set; based on the data set, utilizing a trained time sequence prediction model to output a sand and dust pollution level prediction value of a future preset time length; meanwhile, an exposed crowd sensitivity index and regional health baseline data containing the disease incidence rate and the meteorological sensitive crowd proportion are constructed; calculating a comprehensive health risk index through a dynamic health risk assessment model in combination with the predicted value, the sensitivity index and the baseline data; and when the index exceeds a preset threshold dynamically adjusted based on the incidence peak range in the baseline data, generating a graded early warning signal and issuing the graded early warning signal in real time, thereby realizing accurate early warning of the dust pollution health risk.

The invention discloses an automatic sample weighing instrument. The automatic sample weighing instrument comprises a main body, a lofting module, a sampling module, a sample weighing module and a cleaning module, the lofting module and the sampling module are both movably arranged on the main body, and the sample weighing module and the cleaning module are both fixedly arranged on the main body; the lofting module is used for fixing and storing samples; the sampling module is used for extracting the sample stored in the sample placing module and transferring the sample to the sample weighing module, the sampling module comprises a vibration exciter and a sampling mechanism capable of being opened and closed, the vibration exciter is connected with the sampling mechanism, and the vibration exciter can vibrate the sample in the sampling mechanism so as to add the sample into the sample weighing module; the sample weighing module is used for weighing the weight of a sample; the cleaning module is used for cleaning the sampling module. The sampling module of the automatic sample weighing instrument is arranged, so that the sampling mechanism can be closed after a sample is taken, and flying dust pollution in the transfer process is avoided. Moreover, not only can the sample be taken, but also the sample can be transferred and added, so that the automatic sample adding process is simplified, and the sample adding efficiency is improved.

The invention discloses a garden construction flying dust pollution prediction and suppression system based on big data multi-dimensional analysis, and belongs to the field of environment detection. The invention discloses a garden construction flying dust pollution prediction and suppression system based on big data multi-dimensional analysis. The system comprises a data acquisition module, an edge calculation node module, a prediction and pre-diagnosis module, a suppression strategy generation module and an intelligent scheduling execution module. The problems of monitoring lagging, difficulty in tracing, passive treatment and serious resource waste in the prior art are solved, a full-dimensional data acquisition and processing system is constructed, accurate perception and dynamic association of construction dust pollution sources are realized, advanced prediction of pollution situations is realized by deploying edge calculation and cloud intelligent analysis, and the construction dust pollution sources can be effectively monitored. And finally, through dynamic optimization of a suppression strategy and intelligent scheduling execution, conversion from passive response to active pre-control and from extensive operation to targeted treatment is realized, and the problems of monitoring lag, passive response, resource waste and the like in traditional treatment are effectively solved.

The utility model relates to a waterproof construction laitance removing device which comprises a device box body and a Z-shaped handrail connected with the device box body, a square tube seat and a vibration rod connected with the square tube seat are installed on the front portion of the device box body, a vibration shovel is installed at the lower end of the vibration rod, and the vibration rod is connected with a vibration motor arranged in the device box body through the square tube seat. A slag suction box is arranged on the top face of the device box body, and a slag suction disc is arranged below the bottom face. According to the device, laitance slag blocks cleaned by the vibration shovel can be adsorbed and collected in a centralized mode through the slag suction box and the slag suction disc, meanwhile, dust generated during operation can be adsorbed, dust pollution is greatly reduced, the health of constructors is protected, the device can be flexibly used on a large waterproof operation face due to the fact that the device is provided with a power source, and potential safety hazards caused by long-distance external connection of cables are avoided.

The invention provides a talcum powder-wollastonite master batch and a preparation method thereof, and belongs to the technical field of preparation of master batches for biodegradable plastics. Modified talcum powder, modified wollastonite powder, polylactic acid, an antioxidant, stearic acid and a lubricant are used as raw materials, a talcum powder and wollastonite processing production line and master batch production equipment are combined for use, and a master batch finished product is directly produced from talcum powder and wollastonite raw ore in a one-stop mode. The talcum powder-wollastonite master batch disclosed by the invention has excellent mechanical properties, and the preparation method of the talcum powder-wollastonite master batch reduces dust pollution in intermediate powder packaging and powder transportation, loading and unloading processes, and saves process energy consumption.

The invention relates to the technical field of air filters, and specifically to a dry chemical filter for air purification, comprising a frame, a dry filter box, a filtering structure, a mounting structure, an opening and closing structure, a scraping structure and a closing structure; the dry filter box is opened by the opening and closing structure, so that the internal coarse-effect filter, medium-effect filter, chemical filter element and high-efficiency filter are conveniently taken out, and the parts inside the dry filter box are conveniently inspected and maintained, and the sealing is good, thereby improving the purification effect; the dust, pollutants and toxic and harmful chemical pollutants in the air are filtered in layers by the filtering structure, and the coarse-effect filter, medium-effect filter, chemical filter element and high-efficiency filter are quickly disassembled by the mounting structure, thereby improving the installation and disassembly efficiency of the coarse-effect filter, medium-effect filter, chemical filter element and high-efficiency filter; the dust particles adhered to the coarse-effect filter are scraped off by the scraping structure, thereby improving the filtering effect of the coarse-effect filter.

The utility model relates to a glass edging machining device which comprises a workbench, a limiting assembly for limiting glass of different sizes is fixedly installed on the right side wall of the workbench, a fixing groove is fixedly formed in the left side wall of the workbench, and a driving part for controlling a polishing part to move in a reciprocating mode is fixedly installed on the side wall of the fixing groove. And a dust removal part for collecting chippings and dust generated in the grinding process is fixedly mounted at the bottom of the fixing groove. The glass edge grinding device has the beneficial effects that to-be-ground glass of different sizes is placed on the top of the workbench, one side needing to be ground is placed on one side of the fixing groove, a first electric push rod is started, the telescopic end of the first electric push rod pushes a push plate and conveys the glass to a grinding piece, a second electric push rod is controlled to enable the telescopic end of the second electric push rod to drive the grinding piece to move back and forth through a connecting block, and the glass is ground; and the fan is controlled to blow air outwards, and under blocking of the filter screen, glass fragments and dust generated in the edge grinding process fall into the dust collection box along the through opening in the bottom of the fixing groove through airflow, so that the workshop environment is prevented from being polluted by the fragments and the dust.

The invention relates to the field of full-section tunneling equipment, in particular to a guniting isolation device, a mixed spraying system and a tunneling machine. The guniting isolation device comprises an isolation main frame which can be installed on guniting equipment in a front-back moving mode, the isolation main frame comprises a front protection plate and a rear protection plate, the outer edge of the front protection plate and the outer edge of the rear protection plate are each provided with a sealing structure used for being matched with a tunnel hole wall in a sealing mode, and a slag collecting groove is formed between the front protection plate and the rear protection plate. The slag collecting groove, the front protection plate, the rear protection plate and the tunnel wall define an anti-diffusion cavity capable of inhibiting diffusion of rebound materials and dust, and at least one of the front protection plate and the rear protection plate is provided with a spraying arm avoiding hole used for avoiding a spraying arm of the guniting equipment. At least one of the front protection plate and the rear protection plate is further provided with a monitoring device used for monitoring the guniting effect. The problems that in the tunnel guniting supporting process, rebound materials are difficult to clean, and dust pollution is caused are solved.

The utility model relates to the technical field of new energy batteries, in particular to a laser welding clamp for battery tabs, the laser welding clamp for the battery tabs comprises a press-fit assembly and a bearing base plate, the press-fit assembly comprises a dust collection block, the dust collection block is provided with a dust collection groove and a dust collection hole, the dust collection hole communicates with the dust collection groove, and the bearing base plate is arranged opposite to the press-fit assembly. According to the laser welding clamp for the battery electrode lug, the pressing assembly and the bearing base plate are matched to clamp and fix the battery electrode lug, dust generated in the welding process is sucked back through the dust suction grooves through the dust suction holes, and the problem that in the traditional laser welding process of the electrode lug, a large amount of dust is generated to pollute the environment is solved.

The invention relates to an air curtain-negative pressure coupling circulating dust removal system for an open pit coal mine crushing station, and belongs to the technical field of dust prevention and control. Comprising a dust isolation device, a dust falling device and an air curtain dust control device which are arranged on a mine truck coal unloading channel. The dust isolation device comprises a dust blocking curtain arranged at the top of the coal unloading channel and dust blocking plates arranged on the two sides of the dust blocking curtain; the dust falling device comprises a dust remover arranged outside the coal unloading channel, a dust suction hood arranged in the channel and a negative pressure dust suction pipeline; the air curtain dust control device comprises an air supercharger arranged outside the coal unloading channel, air curtain generators arranged on the two sides of the channel and an air compression pipeline. The air outlet of the dust remover is provided with an air supercharger communicated to the compressed air pipeline, and air flow treated by the dust remover is conveyed to the air curtain generator through the compressed air pipeline under the action of the air supercharger to form circulating air flow. The dust removal system solves the problem of serious dust pollution in the production process of the primary crushing station, and dust treatment is carried out by utilizing airflow circulation to prevent dust diffusion from influencing the surrounding environment.

The invention relates to a photovoltaic sand and dust identification method based on color space fusion and lightweight learning, and the method comprises the following steps: S1, obtaining image data of a photovoltaic module, detecting a module region in an image, and obtaining a mask image of the module region; s2, extracting an ROI image of the photovoltaic module, and performing geometric correction processing; s3, converting the ROI image from an RGB color space to an HSV color space; s4, respectively carrying out threshold setting on the H, S and V three-channel images based on the HSV color space; s5, fusing threshold setting results of the H, S and V channels, generating a final sand and dust pollution mask pattern, and completing sand and dust region identification; and S6, calculating the sand-dust covering proportion of the polluted area on the surface of the component, and dividing pollution grades according to the sand-dust covering proportion. According to the invention, the dust area on the surface of the photovoltaic module can be accurately extracted under different illumination conditions, standardized quantitative evaluation of the pollution degree is realized, and the method is suitable for intelligent cleaning management and remote operation and maintenance scheduling scenes of a photovoltaic system.

The invention belongs to the technical field of photovoltaic equipment, and particularly discloses a solar photovoltaic panel cleaning device which comprises a transverse moving square frame, mounting rods are symmetrically and fixedly arranged on the lower sides of the two ends of two long beams of the transverse moving square frame, and first rolling wheels and second rolling wheels which are perpendicular to each other are rotationally arranged at the inner ends of the mounting rods; longitudinal moving driving mechanisms are arranged at the two ends of the transverse moving square frame in the length direction, a double-layer square frame is arranged above the transverse moving square frame in parallel, an alternate cleaning mechanism is arranged on the lower layer of the double-layer square frame, a washing brush mechanism is arranged above the alternate cleaning mechanism, and a water collecting tank is arranged in the alternate cleaning mechanism. A reciprocating type alternate overturning driving mechanism is arranged at one end of the alternate cleaning mechanism, and a cleaning power mechanism is arranged at the other end of the alternate cleaning mechanism. An alternate cleaning mode is adopted, one cleaning assembly cleans the photovoltaic panel while the other cleaning assembly is cleaned, the cleaning assemblies do not need to be replaced frequently, and meanwhile, a semi-wet cleaning mode is adopted, so that sewage diffusion or flying dust pollution is avoided.

The utility model provides a laminated battery pole piece dust removal device and dust removal equipment thereof. The first frame body and the second frame body of the device are relatively movably arranged on the rack, so that a relatively sealed dust removal cavity is formed when the first frame body and the second frame body abut against each other, and the pole piece is wrapped and sealed in the dust removal cavity; the first brush assembly is movably arranged on the first frame body, and the first ion air knife assembly is arranged above the first brush assembly; the second brush assembly is movably arranged on the second frame body, and the second ion air knife assembly is arranged above the second brush assembly; the negative pressure extraction assembly is arranged on the first frame body and / or the second frame body in a communicating mode and used for extracting dust in the dust removal cavity. According to the device, the phenomenon that large-area dust escapes outwards is reduced, the pole pieces can flexibly enter and exit, the problem of secondary dust pollution of the pole pieces is avoided, and the cleaning and dust removing effects on the pole pieces are improved through the movable first brush assembly and the movable second brush assembly.

A system for cleaning boiler dust pollution of a fossil-fuel power station, which relates to the technical field of dust cleaning. The system comprises: a dust collection hood (2), which covers a dust leakage part of a boiler body (1); a negative-pressure pipe (3), one end of which is in communication with the dust collection hood (2), and the other end of which is in communication with a dust storage bin, wherein a variable-frequency negative-pressure fan (16) is mounted on the negative-pressure pipe (3); a filter screen plate (4), which is mounted in the dust collection hood (2) and can block large-particle dust from entering the negative-pressure pipe (3); and a cleaning mechanism which is arranged in the dust collection hood (2) and can regularly clean dust adhering to the filter screen plate (4). The cleaning mechanism comprises a monitoring assembly and an execution assembly configured to clean dust off of the filter screen plate, wherein the monitoring assembly is movably arranged in the dust collection hood (2), and can monitor dust concentrations on two sides of the filter screen plate (4) in real time; the negative-pressure fan (16) and the execution assembly are both in electrically controlled connection with the monitoring assembly; and, on the basis of the measured dust concentrations on the two sides of the filter screen plate (4), the monitoring assembly can drive the execution assembly to start and stop and regulate and control the power of the negative-pressure fan (16).

The floor grinding machine comprises a bottom plate, a protection frame is fixedly connected to the rear end of the top of the bottom plate, trundles are installed at the four corners of the bottom of the bottom plate, a push handle is installed on the protection frame, an opening is formed in the front portion of the bottom plate, a fixing frame is arranged at the position, above the opening, of the top of the bottom plate, and a grinding assembly is arranged on the inner side of the fixing frame. A cleaning assembly is arranged on the rear side of the polishing assembly, an equipment box is arranged at the position, on the inner side of the protection frame, of the top of the bottom plate, a dust collection assembly is arranged above the equipment box, a storage battery is arranged in the equipment box, and an inverter and a circuit board are arranged on the two sides of the storage battery correspondingly. The protection ring is matched with the dust collection assembly, so that dust on the inner side of the protection ring can be conveyed into the dust collection box in time, dust generated during grinding is effectively prevented from drifting into air, and the dust is prevented from polluting the working environment; and a second electric cylinder is matched with a cleaning strip to achieve automatic cleaning of the ground floor, labor is saved, and practicability is high.

The invention provides a dust concentration monitoring device and method, the monitoring device comprises a monitoring device, the monitoring device is used for monitoring dust, and the monitoring device is provided with a containing cavity for monitoring dust concentration and a communicating pipeline communicating with the containing cavity for dust flowing; the ventilation gas circuit is arranged on the side, away from the communicating pipeline, of the monitoring equipment and communicates with the containing cavity so as to convey dust into the containing cavity; the cleaning component is used for communicating with the communicating pipeline, so that when the concentration of dust in the containing cavity is larger than or equal to a set threshold value, the cleaning component is controlled to convey airflow into the monitoring equipment, and the airflow flows out from the ventilation air path to clean the containing cavity; the problem that in the prior art, a detection light path of dust concentration detection equipment using a light scattering method is prone to being polluted by dust, and consequently the measurement result is inaccurate is solved.

The utility model provides an agricultural straw smashing and returning machine which comprises a shell and further comprises a smashing assembly arranged in the shell, the smashing assembly comprises a motor fixed to one side of the shell, the output end of the motor is fixedly connected with a driving wheel, and the output end of the driving wheel is fixedly connected with a driving motor. A crushing part is arranged on one side of the driving wheel, a transmission wheel is connected to the outer side of the driving wheel in a meshed mode, a rotating rod is fixedly connected to the inner ring of the transmission wheel, and a driven wheel is connected to the outer side of the transmission wheel in a meshed mode. The agricultural straw smashing and returning machine solves the problems that after an existing straw smashing and returning machine smashes straw, a large amount of straw is accumulated on the surface of soil, the smashed straw and the soil cannot be fully mixed, the straw returning effect is affected, dust generated when the straw is smashed cannot be treated, and the straw returning effect is affected. And dust pollution is caused.

The utility model relates to the technical field of plastic products, in particular to a plastic product crushing device which comprises a crushing box, a dust collection device and crushing rollers, a cavity is formed in the crushing box, a feeding port is formed in the upper side wall of the crushing box, a discharging pipe is arranged on the lower side wall of the crushing box, and the dust collection device comprises a limiting box, a threaded rod, a sliding block and a dust collection head. A groove is formed in the limiting box, a connecting pipe with a suction pump is arranged at the rear end of the dust collection head, the connecting pipe penetrates through the sliding block and the upper side wall of the limiting box, a through hole is formed in the rear side wall of the crushing box, the dust collection head is arranged in the cavity, and the connecting pipe penetrates through the through hole and is in sliding connection with the through hole. And a motor is arranged on the side wall of the limiting box, the threaded rod penetrates through the side wall of the limiting box and is connected with the output end of the motor, efficient crushing of plastic products is achieved, dust pollution is reduced, the health of operators is protected, the use experience of users is improved, and the practicability and convenience of the device are improved.

The invention relates to the technical field of environment control of earth excavation, in particular to an earth excavation construction flying dust suppression method and system.The earth excavation construction flying dust suppression method comprises the steps that construction intensity prediction is conducted, specifically, the construction activity intensity and duration in a specific time period in the future are predicted by accessing a construction management system; vehicle information acquisition and fusion: identifying and classifying incoming and outgoing vehicles to obtain accurate vehicle passing frequency and type distribution; raising dust risk assessment and grade determination: establishing a raising dust risk assessment model based on the predicted construction intensity, real-time vehicle passing data and meteorological parameters, and performing grade determination on raising dust risks of different areas; and the regional dynamic spraying control module is used for dividing the construction site into a plurality of independent control regions according to the dust raising risk level and the wind direction information, dynamically adjusting the start-stop time sequence, the water quantity and the spraying angle of a spraying device in each region, and realizing regional and differentiated dust raising suppression. On the premise of saving water and electricity, the problem of flying dust pollution in earth excavation operation is solved.