186 results about "Dust detection" patented technology

The invention relates to the related technical field of dust detection, and provides a mining induced charge and light scattering fusion dust detection device and method.The dust detection device comprises a workbench, a sampling assembly and a detection assembly, and the sampling assembly comprises a sampling air pump, a conical airflow homogenizer and a closed sampling cavity; the detection assembly comprises an annular sliding rail, a light scattering detection module and an electrostatic induction detection module; the dust detection method comprises the following steps: S1, device initialization and zero calibration; s2, sampling preparation of dust-containing airflow; s3, dual-module synchronous signal acquisition; s4, data processing and temperature and humidity compensation; s5, carrying out anti-interference protection assembly; and S6, data fusion and result output. S7, device cleaning and standby; through cooperative work of the double detection modules, dust detection signals in different concentration intervals are accurately captured, wide-range coverage from low concentration to high concentration is achieved, and synchronous monitoring of dust concentration and particle size characteristics is achieved.

The invention provides a coal mine underground MR safety training system, which comprises an intrinsically safe MR head display device, a multi-mode communication center module, a roadway environment sensing unit, a virtual-real fusion training engine and an intelligent evaluation system, and is characterized in that the intrinsically safe MR head display device comprises an annular distributed antenna array and a wide bandgap semiconductor circuit; the antenna is embedded in an anti-collision beam of the mining helmet, and intrinsic safety is achieved through dynamic power control; the multi-mode communication central module forms a dual-channel redundant architecture by an industrial Ethernet interface and a mining wireless unit, is internally provided with a dynamic routing chip, and automatically switches communication modes according to methane concentration and dust detection values to ensure low-delay and high-reliability transmission; the roadway environment sensing unit integrates a geological radar and a micro-seismic monitoring device, constructs a three-dimensional dynamic geological model in real time, and continuously updates roof displacement data.

The invention relates to the technical field of outdoor electrical equipment protection, and discloses an outdoor cabinet intelligent self-cleaning system adaptive to a complex environment, the self-cleaning system is composed of a cabinet shell, a dustproof module, a self-cleaning module, a dust collection groove, a detection module and a control module, the cabinet shell provides a high-strength and corrosion-resistant protection structure, and the dust collection groove is provided with a dust collection groove. Air circulation is realized through the air inlet and the air outlet; the dustproof module is used for intercepting external dust; the self-cleaning module is used for removing dust accumulated on a filter screen, the dust collecting groove is used for collecting dust generated in the cleaning process, the detection module is used for monitoring the environment and the state of the filter screen in real time and collecting key data, and the control module is used for data processing, intelligent decision making, control signal generation and dynamic cleaning strategy adjustment. Through cooperative work of the cabinet shell, the dustproof module, the self-cleaning module, the dust collection groove, the detection module and the control module, the system can accurately sense environment changes, self-adaptively trigger cleaning operation and efficiently reduce manual intervention.

The invention provides a photovoltaic module electrostatic adsorption type dust removal device and method based on longitudinal airflow, and relates to the technical field of photovoltaic power source.The device comprises a dust detection module, a dust removal module and a computer, and the method comprises the steps that dust detection is conducted based on the dust detection module; and driving a dust removal module to remove dust based on a dust detection result. According to the electrostatic adsorption type dust removal device based on the longitudinal airflow, intermittent longitudinal airflow is provided for assisting electrostatic adsorption type dust removal of the photovoltaic module for the first time, a pneumatic device with the switching period being 1 s is designed, dust particles jump under the action of electrostatic force and then rapidly leave a dust removal area under traction of the longitudinal airflow, the electrostatic adsorption type dust removal device based on the longitudinal airflow runs for 2 s, and the dust removal rate is 91.14%; the dust removal efficiency is obviously improved, and the dust removal process realizes low energy consumption, no hydration and no contact. In addition, the dust detection module is adopted to detect the dust, whether the dust needs to be removed or the removing parameters are judged, and use is convenient.

The invention discloses a digging and anchoring surface'pressing-pumping-spraying 'intelligent cooperative dust control and removal experiment platform, which comprises an operation simulation system, a dust removal simulation system and an intelligent centralized control system, and is characterized in that the intelligent centralized control system comprises an industrial personal computer, and the industrial personal computer is used for driving and adjusting the operation simulation system and the dust removal simulation system; the operation simulation system comprises a digging and anchoring all-in-one machine and a belt conveyor, a plurality of groups of sensors are arranged in the roadway at intervals, each group of sensors comprises a roadway dust concentration sensor and a roadway gas concentration sensor, and the detection output end of each roadway dust concentration sensor is connected with the roadway dust detection signal input end of the industrial personal computer. The detection output ends of the roadway gas concentration sensors are connected with the roadway gas detection signal input end of the industrial personal computer; the dust removal simulation system comprises a pressure fan, a dust removal fan and a local pressure fan. Different working conditions can be simulated and verified, and an efficient, accurate and dynamically optimized comprehensive treatment scheme can be obtained.

The invention relates to the technical field of image processing, in particular to an intelligent dust identification method and system based on machine vision. The method comprises the following steps: acquiring a sequence of continuous video image frames of a target area; for any target frame in the sequence, a multi-channel fusion feature input map is constructed, and the multi-channel fusion feature input map comprises RGB channel data of the target frame, a wavelet transform coefficient of the target frame and an optical flow vector field of the target frame; and inputting the multi-channel fusion feature input graph into a preset dust neural network model, and outputting a dust detection result of the target area. According to the scheme, the dust condition of the target area can be accurately detected.

The invention relates to the technical field of air purification, in particular to a workshop air purifier intelligent regulation and control method based on laser dust detection, and the method comprises the steps: firstly obtaining particle size grading concentration data in real time through a laser detection device, and calculating a dynamic pollution index of each monitoring point in combination with a preset weight coefficient; a pollution core area and a diffusion trend are identified according to exponential distribution, an optimal air distribution scheme is generated based on the position of the core area and the concentration gradient, meanwhile, the purifier power and the filter screen mode are adjusted in a self-adaptive mode according to the concentration change rate and the target threshold value, and control parameters are optimized regularly based on an energy consumption efficiency model and the standard reaching time; according to the invention, the concentration data of PM10, PM2.5 and PM0.5 are obtained by grading in real time through the laser dust detection device, and the comprehensive hazard index of dust is accurately quantified in combination with a dynamic weight coefficient set by a respiratory deposition medical model, so that the problem that the particle size toxicity difference cannot be distinguished in the prior art is thoroughly solved.

The present invention relates to dust detection, and in particular to a dust isolation sensor with a self-cleaning function, comprising a box body, which is provided with an air duct, which has an air inlet and an air outlet, a light-emitting component and a photosensitive component, a graphite electrode inserted in the air duct, and the graphite electrode is connected to an electrode of a DC power supply; the air inlet of the suction fan faces the air outlet of the air duct; the box body also comprises a vibration motor, which is installed on the outer wall of the air duct, and the vibration of the vibration motor drives the air duct to vibrate; the box body also comprises an air blowing nozzle, which includes an air inlet and an air blowing port, and the air blowing nozzle faces the inner cavity of the air duct, the air inlet is connected to an air pump, and the air pump is connected to an air source containing clean air; the box body is connected to a ceramic bracket, which supports the graphite electrode; the part where the ceramic bracket is connected to the graphite electrode is padded with a rubber pad; the dust in the air duct is continuously removed to maintain the stability of the dust sensor during long-term use.

The invention discloses self-adsorption environment-friendly dust removal equipment which comprises a box body, a top plate is arranged on one side of the top of the box body, an adsorption plate is fixedly connected to the bottom of the top plate, and an air inlet hopper is fixedly connected to one side of the box body. According to the self-adsorption environment-friendly dust removal equipment and the control system, an exhaust fan is used for directly extracting and filtering, dust is prevented from being adsorbed on the inner wall of a pipeline, a dust sensor outside an air inlet hopper detects external dust, and the internal exhaust fan is started to suck external air when the external dust exceeds a threshold value; after being filtered by a filter plate and an adsorption plate in the box body, gas is sprayed through a vertical pipe in a spraying area, dust in the air can be better reduced, when the dust concentration is larger than 8 mg / m, a dust removal enhancing mode is started, the mode switching module can control the exhaust fan to increase the rotating speed, the exhaust capacity of the exhaust fan to the air outside the box body is enhanced, and the dust removal effect is improved. And the dust-removed air is discharged from the air outlet hopper.

The invention provides an environment detection device for a dust environment, and relates to the technical field of dust detection. The environment detection device for the dust environment comprises a movable base, the top end of the movable base is fixedly connected with a top end anti-falling frame, one side of the top end of the top end anti-falling frame is fixedly connected with a fixed box body, and a dust collection structure is arranged at the top end of the fixed box body; a detection box is arranged at the position, located on one side of the fixed box body, of the top end of the top end anti-falling frame, a detection structure is arranged on one side of the detection box, the dust collection structure comprises a top end conveying seat fixed to the top end of the fixed box body, and a transmission box is installed at the top end of the top end conveying seat. The environment detection device for the dust environment has the advantages that the problems that traditional dust detection equipment is poor in mobility, incomplete in sampling, lagged in detection and the like are solved, real-time monitoring, efficient sampling and data feedback of the dust environment are achieved, and reliable technical support is provided for operation safety protection and environment quality management and control.

1. The name of the design product: Dust particle counter (CA-680). 2. The use of the design product: For dust detection, calculate the amount of dust. 3. The design points of the design product: In shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The application belongs to the field of measuring equipment, and provides a hollow glass panel installation site detection device, which comprises a detection base, the front end surface of the detection base is provided with a walking plate passing port, the rear end of the detection base is provided with an adjusting motor assembly, the side surface of the adjusting motor assembly is provided with a handle assembly, the front end inner side of the detection base is provided with a panel seat which is nested with the detection base, a pair of rolling guide modules are arranged in the walking plate groove of the panel seat, the rolling guide modules are used for rolling cooperation with the frame edge of the window frame, a fan module and a pressure sensor module are arranged on the panel seat, the two sides of the detection base are provided with quick clamping strips, and screw detection modules are arranged on the quick clamping strips. The application has reasonable design, can realize screw detection, dust detection and sealing detection, has good portability and high utilization, and is suitable for large-scale promotion.

The utility model discloses a dust detector through control luminous time to control luminous quantity, including setting in the detection area's luminous element, light receiving element and be used for to the light current signal of light receiving element in producing amplification amplifier circuit, control and detect light emission and light receiving signal's singlechip, the drive circuit of luminous element adopts transistor switch circuit to control luminous time, the drive circuit includes transistor and current -limiting resistance, luminous element, transistor and current -limiting resistance series connection with power supply and form the electric loop, the transistor trigger control end is controlledly connected in the singlechip, the utility model discloses dust sensor through control luminous time realizes to luminous element luminous quantity control, through the luminous quantity of luminous element accurate control, can improve dust sensor measurement result's accuracy and reliability.

This invention provides a dust detection method and apparatus based on image processing, comprising: acquiring dust data within a current area, the dust data including dust image data and dust concentration data; processing the dust image data and dust concentration data using a trained dust feature analysis model to obtain dust feature data within the current area; and integrating and outputting the dust feature data through a visualization module to generate a visualized dust feature report. This method achieves a solution for combining image data and concentration data to obtain accurate dust feature data. By comprehensively analyzing the current dust concentration and image within a certain area, the real-time performance, accuracy, and stability of dust detection within that area are improved.

The invention provides a heavy calcium carbonate packaging quality detection method based on visual inspection, and relates to the technical field of heavy calcium carbonate packaging quality detection.The method comprises the steps that a low-dust detection angle and a high-dust detection angle are calculated according to the radian angle range of a packaging bag; the method comprises the following steps: acquiring pixel difference matrixes of in-bag areas of two images with high and low dust detection angles, performing shadow and brightness gradient identification on the in-bag areas according to the pixel difference matrixes, dividing brightness areas, and calculating the identification thickness of dust in each area according to the brightness of each brightness area, the method comprises the following steps: acquiring environmental parameters of a package detection area, calculating the thickness, position and quantity of different brightness areas of a bag-in-bag area, calculating a quality evaluation value of the bag-in-bag area, establishing a visual detection model, calculating a quality evaluation value of a bag end area, calculating a package quality score according to the quality evaluation value of the bag-in-bag area, and identifying the package quality.

1. The name of the design product: Dust particle counter (JHY-580T). 2. The use of the design product: For dust detection, calculate dust volume. 3. The design points of the design product: In shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model provides a dust sensor fixed bolster, especially related to mine dust detection technical field. This fixed bolster is fixed on the anchor rod of roadway support help department, and it includes base, support rod and connecting plate, the base includes bottom plate, four stands and three enclosures, the support rod is horizontally arranged between connecting plate and base, one end of support rod is fixed with the outside wall of one of the enclosures of base, and the other end is fixed with the side wall of connecting plate, the connecting plate is provided with fixed through -hole, and the anchor rod of roadway support help department is inserted into fixed through -hole and fixed with connecting plate through nut. The utility model has the advantages of simple structure, convenient installation and removal, can protect dust sensor from damage by external force during movement, solve the problem that current hanging mode does not conform to industry standard, greatly reduce sensor failure rate, reduce cost and workload of maintenance personnel.

The application discloses a dust detection device and method applied to city management, and belongs to the dust detection field.The device comprises a fixing seat and a wind power mechanism.The wind power mechanism is driven to work by the wind power, the dredging mechanism blows air to the hole part of the filter screen, dust blocked in the hole of the filter screen is blown out, and the filter screen is effectively cleaned by cooperating with the cleaning brush, so that the filter screen is prevented from being blocked, outside air cannot enter the detection cylinder, the air intake efficiency is ensured, the quality and efficiency of dust detection in the air are ensured, water in the management ring intermittently sprays out through the water spraying hole to form water mist, the water mist enters the outside environment along with the air under the action of the air discharged by the fan blade, dust in the outside environment air is condensed, the mass of the dust is increased, the dust falls to the ground under the action of gravity, the content of the dust in the air is reduced, and personnel are well protected.

The utility model relates to the technical field of emergency rescue equipment, in particular to an information acquisition device for an emergency rescue site of a collapsed building, which comprises an acquisition box, and an information acquisition assembly and a telescopic assembly are arranged in the acquisition box. The information acquisition assembly covers a control panel and various information acquisition modules, such as a life acquisition module, a gas detection module, a dust detection module and a temperature and humidity detection module, and communicates with the control panel through a wireless signal transmission module. The telescopic assembly is composed of a telescopic telescopic rod, the sealing cavity is inflated through the air pump to achieve stretching and retracting, and the free end of the telescopic assembly is provided with the disassembly and assembly assembly so that disassembly and assembly of the information collection module can be facilitated. According to the device, rescue site information can be collected in all directions, the detection area is flexibly adjusted, and the efficiency and safety of rescue work are improved.

The invention discloses a calibration device and a calibration method for a mining light scattering principle dust sensor. The calibration device comprises a fuming cavity, a detection cavity and a filtering cavity, the fuming cavity comprises a fuming sheet, and solid aerosol is generated by burning the fuming sheet; the detection cavity is provided with a detection cavity air inlet, a calibrated dust detection module, a circulating air pump, a detection cavity filtering module, an air extracting pump and a three-position two-way valve; the first three-position two-way valve is used for switching the path of airflow output by the circulating air pump so as to selectively guide airflow to the calibrated dust detection module or the filtering cavity. The three-position two-way valve II is used for switching an input source of the sucking pump so as to select smoke dust sucked into the smoke generating cavity or clean air outside through the detection cavity filtering module and the detection cavity air inlet; the three-position two-way valve III is used for switching an output path of the sucking pump so as to selectively output the airflow to the detection cavity or the filtering cavity; activated carbon is arranged in the filter cavity and used for adsorbing solid particles and harmful aerosol flowing through gas. The method replaces a dust fan drift to calibrate the dust sensor.

The invention belongs to the technical field of dust detection, and relates to a dust detection device which comprises a cylindrical detection box, double doors which can only rotate towards the interior of the detection box are rotationally arranged at openings in the two ends of the detection box, and through holes are formed in the bottoms of the openings in the two ends of the detection box. A dust collection box is fixedly connected to the position, located at each through hole, of the bottom face of the detection box, two detectors are symmetrically and fixedly installed at the top of the detection box, detection heads of the two detectors extend downwards into the detection box, and two telescopic protection shells are vertically and slidably arranged at the top end in the detection box through second springs; the two protection shells are arranged outside the two detection heads in a sleeving mode respectively, annular cleaning blocks are fixedly arranged at the bottom ends in the two protection shells, and the cleaning blocks abut against the outer portions of the detection heads in a sliding mode. The dust collection device has the advantages that dust on one side of the second filter screen is automatically blown into the corresponding dust collection box through the fan, shutdown operation is not needed, and the working efficiency is improved.

This invention provides a dust detection and concentration classification method based on prior information, including the construction of a dust detection and monitoring system, the creation of a dataset, and the optimization of the algorithm. Compared with other deep learning detection technologies, this invention obtains a grayscale image through the Fast-DMPHN image dehazing network. This grayscale image can provide the dust concentration, and it has strong prior information. This prior information can compensate for the spatial information lost by the U-net network, thereby improving the segmentation accuracy. Combining the dust concentration and the area of ​​the dust region, a comprehensive judgment is made and the dust concentration is classified. This invention can automatically detect dust in a region and determine the corresponding level. Based on the segmentation results and dust concentration, it can achieve precise dust removal. Compared with previous dust detection methods, it has the advantages of fast detection speed, high accuracy, and rapid and accurate dust removal, which improves efficiency and saves human capital, and has great value and significance.

The utility model relates to the technical field of flue gas detection, and particularly discloses a dust detection device for a flue gas pipeline, which comprises a box body, a connecting mechanism is fixedly arranged on the side wall of the box body, a heat tracing sampling pipe penetrates through and is fixedly arranged in the connecting mechanism, and a sampling probe is fixedly arranged at one end, far away from the box body, of the heat tracing sampling pipe. A protection port is fixedly arranged at one end, far away from the heat tracing sampling pipe, of the sampling probe, the whole protection port is of a circular truncated cone-shaped structure, a plurality of flow guide grooves are uniformly formed in the protection port in the circumferential direction at intervals in a penetrating manner, and a gas conveying pipe I, a gas conveying pipe II and a gas conveying pipe III are uniformly and fixedly arranged on the side wall of the box body at intervals. By arranging the heat tracing sampling pipe, heat tracing can be achieved in the whole process, and it is avoided that the temperature of smoke drops in the conveying process, and condensate water is generated; the sampling probe can be prevented from being directly exposed in high-speed flue gas by arranging the protective port and the plurality of diversion trenches, and the flue gas is prevented from directly impacting and blocking the sampling probe.

The invention discloses a dust detection result determination method and device, a storage medium and an electronic device, and relates to the technical field of dust detection of photovoltaic panels, and the method comprises the steps: generating a simulated dust-containing image corresponding to a historical image of a photovoltaic panel based on a preset corresponding relation; training the initial model by taking the simulated dust-containing image as an input sample and taking a historical dust density quantitative value corresponding to the second pixel value as an output sample to obtain a dust detection model; and inputting the preprocessed standard image of the photovoltaic panel into the dust detection model to obtain a target dust density quantitative value output by the dust detection model, and determining a dust detection result according to the target dust density quantitative value. The problem that an existing dust detection method is not high in dust detection efficiency of the photovoltaic panel is solved.

The invention relates to a detection device for a smart watch and a mobile phone. The detection device comprises a box body and a detection station, a rotatable base plate is arranged at the central position of a bottom plate of the box body, and a plurality of placing cavities for placing watches are uniformly distributed in the circumferential direction of the base plate; a plurality of detection stations are arranged in the circumferential direction of the bottom plate of the box body, and the placement cavity can reach the next detection station every time the base plate rotates by one step; an air injection mechanism is arranged above the central position of the base plate and close to the upper surface of the base plate, and an air outlet is formed in the side wall of the box body; the air injection mechanism injects air in the horizontal plane in the circumferential direction, and the injected air flows through the detection station and finally flows out of the air outlet. The device has the beneficial effects that the detection efficiency is improved, and dust on the surface of the display screen can be well removed, so that the detection precision of an internal dust detection item is improved.

The application discloses a cleaning instrument control system, which comprises a rolling brush motor control circuit for driving and controlling a rolling brush device, an adsorption motor driving circuit for driving and controlling an adsorption device under the control of a controller, and a dust detection module of the controller for collecting dust data through a dust sensing circuit and automatically adjusting the working mode and time according to the collected dust data. Thus, the dust and / or mites on the surface of the cleaned object are collected through the dust sensing circuit, and the collected data are output to the controller, and the controller can adjust and control the working mode and time of the cleaning instrument according to the quantity of the dust and / or mites. The cleaning demand of different users can be met. Thus, the working mode and time of the mite removing instrument are automatically adjusted according to different dust or mite data, and the cleaning effect and efficiency are improved.

This invention discloses a novel zinc ash filtration system and method, relating to the technical field of hot-dip galvanizing production lines in metallurgy. It includes a fan, a finned cooler, a coarse filter, a precision filter unit, a differential pressure sensor, a heater, and dust detection devices before and after filtration. The fan provides suction, drawing high-temperature zinc ash-containing atmosphere from the middle section of the furnace nose. The finned cooler cools the 700°C gas to 40°C before it sequentially enters the coarse and precision filters. The precision filter unit is equipped with a differential pressure sensor; when a differential pressure alarm occurs, it automatically switches to a backup filter unit, achieving uninterrupted production. The filtered gas is heated by the heater and returned to the thermal expansion chamber in the furnace area, forming a closed-loop circulation. The dust detection device monitors the dust concentration before and after filtration in real time. This invention features high cooling efficiency, high filtration accuracy, online automatic switching, and full-process monitoring, significantly improving the problem of zinc ash accumulation at the furnace nose and enhancing the surface quality of galvanized sheets. It is suitable for continuous hot-dip galvanizing and continuous annealing production lines.

The invention relates to the technical field of raised dust detection, in particular to a water conservancy construction site raised dust detection device and method, and the water conservancy construction site raised dust detection device comprises a detection box, a humidity sensor, a temperature sensor, a raised dust detector and a heat exchange device; a bearing plate is arranged in the detection box, the interior of the detection box is divided into a mounting cavity and a heat exchange cavity by the bearing plate, the flying dust detector is mounted on the bearing plate and located in the mounting cavity, the flying dust detector is provided with a vertically arranged detection pipe, the detection pipe is connected with a first air inlet pipeline and a second air inlet pipeline, and the first air inlet pipeline and the second air inlet pipeline are communicated with each other. The first air inlet pipeline is located outside the detection box, the second air inlet pipeline is located in the heat exchange cavity, the heat exchange device comprises a heat exchange pipe penetrating through the heat exchange cavity, and the heat exchange pipe is used for adjusting the temperature in the detection box so as to heat and dehumidify air in the second air inlet pipeline and improve the accuracy of raised dust detection; and meanwhile, energy consumption can be reduced.

The utility model discloses a dust removal device for a semi-closed dust production working area based on air curtain dust blocking, relates to the technical field of industrial dust removal, and provides the following scheme that the dust removal device comprises the semi-closed dust production working area, a dust suction opening is formed in the upper end of the semi-closed dust production working area, and a dust suction mechanism is connected to the upper end of the dust suction opening; an outlet is formed in one side of the semi-closed dust production working area, an air curtain retaining wall is arranged at the top end of the outlet, an air conveying pipeline is fixed to the inner wall of the air curtain retaining wall, air spraying heads are fixed to the air conveying pipeline at equal intervals, and the air outlet ends of the air spraying heads are connected with nozzles. The other end of the gas conveying pipeline extends to the outside of the semi-closed dust production working area and is connected to the air outlet end of the air compressor, and a dust detection mechanism is fixed to the outer wall of the air curtain retaining wall. According to the utility model, the air volume of the dust remover can be dynamically regulated and controlled according to the concentration of the overflowed dust volume, so that the dust removal efficiency is improved, the energy consumption is reduced, the production cost is reduced and the service life of the dust remover is prolonged on the premise of effectively controlling the dust overflow.

The invention relates to the technical field of mining mechanical equipment, in particular to a mining ultrasonic dry fog negative pressure gas circulation chemical wetting intelligent dust suppression system. Comprising a spraying dust-settling module, a dust detection module, a spontaneous power supply module and an information control module. The dust detection module is used for monitoring the dust concentration in a roadway in real time and transmitting a detection signal to the information control module; the information control module analyzes and outputs the detection signal based on the energy provided by the spontaneous power supply module so as to drive the spraying dust suppression module to realize automatic spraying dust suppression. Superfine liquid drops are generated through the synergistic effect of ultrasonic atomization and chemical dust suppression, and dust trapping, settling and source suppression are achieved; a double-layer semi-closed negative pressure circulation structure is adopted to actively guide dust-containing airflow to enter an atomization area, gas self-circulation purification is formed, and the dust removal efficiency is improved.