1631 results about "Dust pollution" patented technology

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 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 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 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 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.

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 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.

The invention discloses a dustproof shed environment balancing method and system based on multivariable fuzzy control, and the method comprises the steps: collecting multivariable environment data, and carrying out the preprocessing of the multivariable environment data through a Kalman filtering algorithm, and obtaining the target multivariable environment data; based on a dynamic weighted summation method, a comprehensive cleanliness risk index and a comprehensive cleanliness risk index change rate of the target multivariable environment data are obtained through calculation; based on a multiple-input multiple-output fuzzy control core algorithm, taking the comprehensive cleanliness risk index and the change rate thereof as input, and outputting to obtain a control value in a percentage form; and adaptive correction is carried out based on a reinforcement learning Q-learning algorithm. Through multivariable data acquisition, comprehensive cleanliness risk index, fuzzy control and self-adaptive correction, control precision and stability jump are realized, manual frequent debugging is not needed, long-term operation control errors are reduced, hidden dangers of dust pollution, humidity condensation and the like are effectively eliminated, and the failure rate after equipment is put into operation is reduced.

The invention provides an MTP optical fiber connector and a connector assembly, and relates to the technical field of optical fiber connectors. Wherein the MTP optical fiber connector comprises a connector shell, an optical fiber plug, a first elastic reset structure and a protection device, an installation cavity is arranged in the connector shell, the optical fiber plug can move in the cavity, and the first elastic reset structure enables the optical fiber plug to retract when the optical fiber plug is not in butt joint. The protection device comprises a rotatable protection plate and a second elastic reset structure and seals the opening of the shell in a normal state. According to the MTP optical fiber connector, through a dual protection mechanism of automatic stretching of the optical fiber plug and dynamic closing of the protection plate, the end face of the insertion core is effectively prevented from being subjected to mechanical collision and dust pollution. The protection plate is automatically opened when the plug extends out and is automatically closed when the plug retracts back, manual intervention is not needed in the whole process, the reliability problem caused by exposure of the insertion core of a traditional connector is solved, and full-automatic protection is achieved.

The invention discloses a laser measuring device for furniture production, and relates to the technical field of furniture production, the laser measuring device comprises a laser scanner and a cleaning assembly, the outer side of the lower part of the laser scanner is fixedly provided with a top cover, the cleaning assembly is arranged at the lower part of the laser scanner, the cleaning assembly comprises a motor, the top of the top cover is provided with the motor, and the motor is arranged on the top of the top cover. And the output shaft end of the motor is connected with a driving gear. The lens protection and automatic cleaning functions are achieved through the rotatable bottom plate structure, a detection opening is located below the lens during scanning measurement, shielding is avoided, normal operation is ensured, the motor drives the gear set to drive the bottom plate to rotate in the protection stage, and the brush plate reciprocates to clean the surface of the lens; and then the cover plate automatically moves to the position below the lens to form a physical barrier, dust pollution generated by machining is effectively isolated, the cleaning and protection integrated design prolongs the service life of equipment, and a reversible rotation mechanism can trigger the brush to conduct secondary cleaning again before next measurement.

The invention discloses a composite early-strength anti-freezing water reducing agent and a preparation method thereof. The composite early-strength anti-freezing water reducing agent comprises the following components: nitrate or nitrite, an alcohol anti-freezing component, alcohol amine, polycarboxylic acid high-performance water reducing agent mother liquor, a polyether air entraining agent and water. The method comprises the following steps: adding water into production equipment, sequentially adding nitrate or nitrite, methanol, ethylene glycol, hydramine and the polycarboxylic acid high-performance water reducing agent mother liquor, uniformly stirring, and discharging to obtain the product. The invention has the following advantages: the dosage form is a water agent, dust pollution is avoided, occupational health and safety of practitioners are protected, the labor cost of feeding is saved, the early-strength anti-freezing component and the water-reducing component are compounded together, and the water-reducing rate and concrete anti-freezing critical strength specified by national standards and industrial standards are reached under the condition that the dosage is determined, so that the dosage is reduced; the product can resist low temperature of-20 DEG C without crystallization, is not layered after being placed for a long time, and has no precipitate.

The invention is applicable to the technical field of conveying belts, and provides a macromolecular flame-retardant conveying belt which comprises a mounting frame, a transmission roller and a guide roller, and the transmission roller and the guide roller are rotationally mounted on the mounting frame; the conveying belt is arranged on the transmission roller in a sleeving mode and used for conveying materials, the conveying belt makes contact with the guide roller, the conveying belt is composed of upper covering rubber, a bonding layer, a belt core framework and lower covering rubber, and the belt core framework is located between the upper covering rubber and the lower covering rubber and firmly bonded through the bonding layer. According to the high-molecular flame-retardant conveying belt, lump coal with high value and pulverized coal with low value are separated in real time at the conveying front end, value loss caused by mixed transportation is avoided, graded utilization of resources is achieved, and meanwhile through the arrangement of the conveying belt, atomization dust falling, a dust cover, spontaneous combustion monitoring, fixed-point fire extinguishing and the like, the conveying efficiency is improved. And dust pollution and fire risks are effectively reduced, and the working environment is improved.

The invention provides a factory unattended dust suppression method and system, a medium and a product. In the method, a dust suppression system firstly establishes a quantitative corresponding relation between the running state of dust production equipment and the theoretical dust production level, then sets dust monitoring points and the dust production equipment as nodes, and constructs node feature vectors containing environmental parameters and dust related data, so that each node not only can reflect the own environmental attribute, but also can reflect the theoretical dust production level. And direct association with dust can be reflected. Then, the dust suppression system calculates an edge weight through the wind speed, the wind direction and the node distance, the diffusion possibility and strength of the dust among the nodes are reflected, and then the constructed dust diffusion directed graph can visually present the possible propagation path of the dust; and finally, the dust suppression system analyzes the associated information of each node by using the topological structure and node characteristics of the directed graph through the graph neural network, and identifies a dust generation source. According to the method, the dust pollution source is positioned, the problem of blind dust suppression only according to the concentration of the monitoring point is solved, and the dust suppression efficiency is improved.

The invention discloses a self-adaptive intelligent cleaning control system and method for a photovoltaic panel, and relates to the technical field of photovoltaic power generation, and the system comprises an image collection module which is used for dynamically collecting visible light and near-infrared images of the photovoltaic panel; the grade division module is used for realizing self-adaptive division of dust pollution grades through image analysis; the cleaning decision module analyzes and judges whether cleaning is executed or not based on the power generation income and the cleaning cost; and the parameter regulation and control module generates control parameters such as mechanical arm speed and water pressure through deep reinforcement learning. Intelligent and precise control over photovoltaic panel cleaning is achieved, the cleaning efficiency is improved, and the operation and maintenance cost is reduced.

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 utility model belongs to the technical field of mobile phone production, and particularly relates to a screen pressing device for mobile phone production, which comprises a workbench, a support column and a top plate, and further comprises a vacuum box, the hydraulic cylinder is fixed on the top surface of the top plate, and a piston rod of the hydraulic cylinder penetrates through the top plate and then is fixedly connected with a vacuum box; the two buffering mechanisms are symmetrically fixed to the top face of the workbench and used for supporting a mobile phone frame and a mobile phone screen; a pressing plate; the driving mechanism is connected to the pressing plate in a drivable mode and used for driving the pressing plate to move; according to the pressing device, the mobile phone screen is pressed in a vacuum environment, electrostatic dust collection and dust pollution can be effectively prevented, and the attaching quality is guaranteed; and through the arranged buffer mechanism, the downward pressure of the pressing plate can be buffered until the telescopic column is completely contracted, unnecessary damage caused by direct rigid impact between the pressing plate and the mobile phone screen is avoided, and the machining safety is guaranteed.

The invention discloses an intelligent monitoring platform and method for construction flying dust, and relates to the technical field of flying dust monitoring data processing, and the platform comprises the steps: traversing a building construction region, laying a plurality of monitoring devices for data collection, and obtaining a plurality of construction monitoring data; determining a flying dust data association network; performing flying dust prediction on the plurality of construction monitoring data to obtain a flying dust prediction result; traversing the building construction area according to the flying dust prediction result for tracing; and optimizing the flying dust treatment scheme, and generating a flying dust treatment optimization scheme to intelligently treat flying dust in the building construction area. The technical problems of low dust pollution monitoring efficiency and insufficient treatment scheme pertinence caused by difficulty in real-time and comprehensive monitoring of a building construction area and incapability of accurately positioning a dust pollution source in the existing building construction dust monitoring treatment are solved, intelligent management of building construction dust treatment is realized, and the construction efficiency is improved. The technical effect of improving the dust pollution monitoring efficiency and the treatment pertinence of the building construction area is achieved.

The invention is suitable for the technical field of tunnel construction equipment, and provides tunnel construction self-moving type dust collection ventilation equipment which comprises an AGV trolley and a dust collection mechanism above the AGV trolley. The dust collecting mechanism comprises a group of mounting plates; the dust collection cylinder is rotationally matched between the two mounting plates through a bearing, one end of the dust collection cylinder is an open dust collection surface, a stainless steel filter screen is arranged on the open dust collection surface, the other end of the dust collection cylinder is communicated with the adsorption end of the fan through a dust guide pipe, and the discharge end of the fan is communicated with the dust collection bin through the dust guide pipe; efficient collection and treatment of dust in tunnel construction are achieved; the deep purification of the air on the construction site is jointly ensured, the dust pollution is obviously reduced, and the quality of the whole working environment is improved; and meanwhile, an intelligent monitoring system formed by the integrated dust sensor group and the PLC can monitor the dust concentration in real time and adaptively adjust the working state of the dust collection mechanism, so that the optimal dust removal effect is always kept, and the autonomy and reliability of the equipment are remarkably enhanced.

The invention relates to the technical field of hydraulic machines, in particular to a multi-station rotary workbench powder hydraulic machine and a control method thereof.The multi-station rotary workbench powder hydraulic machine comprises an upper cross beam, a movable cross beam, a lower cross beam and a material pressing table, a material pressing device is arranged between the material pressing table and the movable cross beam, and a material conveying device is arranged on one side of the material pressing device and fixed to the side face of the upper cross beam; the material pressing device comprises a material pressing cylinder; a rotating table indexing mechanism and a cam device are arranged on the material pressing table, and a material jacking cylinder and a guide column are arranged below the material pressing table; a plurality of tooth blocks are arranged on the rotating table indexing mechanism, and a plurality of station bins are evenly arranged in an annular area surrounded by the tooth blocks; the material conveying device comprises a powder storage bin and a conveying pipe; the lower end of the conveying pipe rotationally corresponds to the powder loading station in the station bin, and the demolding station of the station bin rotationally corresponds to the ejection cylinder. The powder hydraulic machine with the multi-station rotary workbench overcomes the defects that the positioning precision is insufficient, the unbalance loading resistance is poor, the dust pollution is serious, and the production efficiency is low.

The invention relates to an automatic filling rubber sheath preforming method and device for rare refractory metal powder. The device comprises a vacuum feeding mechanism, a weighing and metering mechanism, a vibration filling mechanism, an automatic plugging mechanism, a sheath transposition mechanism, a manipulator loading and unloading mechanism and a control system. According to the system, efficient, uniform and sealed filling of tantalum powder is achieved through vacuum material suction, weighing control, filling and compaction at the same time, automatic plugging and sealing and bag sleeve replacement through linkage of a mechanical arm. The control system coordinates sequential operation of all links on the basis of signals of multiple sensors, the powder amount range of a single bag is 6-17 kg, and the control system is matched with rubber bags of multiple specifications such as phi 60 * 1000 mm and the like. According to the method, the powder loading density consistency, the sealing reliability and the production line rhythm are improved, the labor intensity and the dust pollution are remarkably reduced, and the method is suitable for the field of metallurgy preforming of tantalum, alloy powder of tantalum and other metals.