88 results about "Soot particles" patented technology

The application belongs to the technical field of lubricating oil additives, and particularly relates to a polyisobutylene succinimide dispersant as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing polyisobutylene maleic anhydride, base oil and aromatic hydrocarbon solvent, then adding aminobenzene boronic acid, and performing reaction by increasing temperature to reflux temperature, and obtaining the polyisobutylene succinimide dispersant after filtration. The polyisobutylene succinimide dispersant is prepared by using polyisobutylene maleic anhydride and aminobenzene boronic acid, the molecular structure of the polyisobutylene succinimide dispersant contains not only an aromatic ring but also an oxygen-containing benzene boronic acid group, the aromatic ring and the benzene boronic acid group both have a good adsorption effect on soot particles, and the ability of the polyisobutylene succinimide dispersant to disperse soot is improved. The performance test results show that the oil product prepared by using the polyisobutylene succinimide dispersant of the application not only improves the soot dispersion performance of the oil product, but also improves the high-temperature detergency of the oil product, and the preparation process is simple and easy to implement.

The utility model discloses a closed full-automatic tin smoke blowing system of a top blowing furnace. The closed full-automatic tin smoke blowing system comprises a tin smoke receiving part, a top inlet of the tin smoke dust blowing part is connected with a bottom outlet of the tin smoke dust receiving part, and a bottom outlet of the tin smoke dust blowing part is connected with an inlet of the screw feeder; the pressure relief part is connected with the tin smoke dust receiving part and the tin smoke dust blowing part; the vulcanizing part is connected with the tin smoke dust receiving part and the tin smoke dust blowing part; the purging part is connected with the vulcanization part; the spray gun part can extend into the top blowing furnace, can move to a first position and a second position and is used as a triggering condition for starting blowing and automatically spraying tin smoke dust particles to the top blowing furnace, the spray gun part is connected with a blowing pipeline, and an outlet of the spiral feeder and the blowing part are both connected with the blowing pipeline; and the blowing part is provided with a constant-pressure pore plate for conveying constant quantity of compressed air to the blowing pipeline. The system can provide constant blowing air, and the blowing effect is guaranteed.

The present application relates to a kind of carbon smoke particle surface water vapor phase change test system and method, belong to phase change test technical field, carbon smoke particle sampling sub-system is used to provide primary carbon smoke particle or secondary carbon smoke particle to sample bin, temperature / pressure control subsystem is used to adjust the temperature and pressure of sample bin, so that sample bin is at predetermined temperature and predetermined pressure, predetermined humidity water vapor generation subsystem is used to provide predetermined humidity water vapor to sample bin, detection component is used to detect the phase change of predetermined humidity water vapor on the surface of primary carbon smoke particle or secondary carbon smoke particle at predetermined temperature and predetermined pressure, so that the temperature-pressure-humidity of sample bin can be realized coordinated control, carries out carbon smoke particle surface water vapor phase change test research under different temperature, humidity, pressure conditions.

A method for purifying smoke source in tunnel excavation process relates to the field of tunnel engineering air purification, comprising a device box, a negative pressure return air inlet, a pressure fan, a static pressure box, a smoke treatment device, a harmful gas purification device and a high-pressure air curtain system are fixed in the device box, the high-pressure clean air jet formed by the air outlet is sprayed to the drilling and blasting operation face, the high-concentration smoke-carrying air area is targeted, quickly diluted and strongly disturbed, the smoke-carrying air is passively returned to the negative pressure return air inlet grid area on both sides of the device box, the smoke particles are intercepted and purified by the smoke treatment device, the harmful gas is purified by the harmful gas treatment device, and the purified air is pressurized and sprayed by the pressure fan to complete the circulation of the smoke-carrying air on the face; the airflow organization formed by the method has good disturbance effect on the air retention on the face, has good smoke and dust removal effect in a large space or range, and is also suitable for relatively closed space.

The utility model relates to the technical field of industrial waste gas treatment, in particular to a purification device for industrial waste gas treatment, which comprises a base, and a primary purification mechanism, a water-gas separator and a secondary purification mechanism are sequentially arranged on the upper end face of the base from left to right. Smoke dust particles in waste gas are preliminarily removed through water at the lower end of the interior of the spraying box, then the waste gas floats upwards and makes contact with water mist again, the smoke dust particles in the waste gas are further removed through the water mist, the smoke dust particles in the waste gas are separated independently, and the smoke dust particles in the waste gas are prevented from blocking an activated carbon filter screen. Meanwhile, the service life of the activated carbon filter screen can be prolonged, a plurality of bolts for fixing a mounting plate are screwed down, then the mounting plate drives the activated carbon filter screen to be taken out of the filter box through a notch, then the activated carbon filter screen is cleaned, maintained or replaced, and then the steps are reversely operated to mount the activated carbon filter screen; and therefore, the activated carbon filter screen can be conveniently disassembled and assembled.

The invention relates to the field of flue gas treatment, in particular to a fire coal coupling biomass sludge blending combustion flue gas treatment device which comprises a support, and a flue gas inlet box, a smoke dust treatment box and a flue gas treatment box are sequentially installed on the top of the support from bottom to top. A smoke dust filtering assembly for filtering smoke dust and a smoke dust cleaning assembly for cleaning the smoke dust are mounted in the smoke dust treatment box, and an ash discharging hopper is mounted at the bottom of the smoke inlet box; a flue gas treatment assembly for reheating flue gas and a flue gas spraying assembly for spraying, cooling and catalyzing the flue gas are mounted in the flue gas treatment box, and a smoke exhaust hood is mounted at the top of the flue gas treatment box. Smoke particles in smoke are filtered through the smoke filtering assembly, the filtered smoke continues to upwards enter the smoke treatment box, and the smoke treatment assembly can conduct secondary heating combustion on the smoke, so that dioxin substances in the smoke are combusted and purified, and the dioxin substances are exhausted from the top of the smoke exhaust hood.

This utility model belongs to the field of food equipment technology, specifically a high-efficiency, energy-saving, heat-dissipating automatic cooking machine pot module. It includes a pot cover, which is composed of an upper cylindrical section and a lower funnel section. The bottom surface of the cylindrical section has a central through hole, and several ventilation holes are arranged around the central through hole. A flow-dividing baffle is provided on the bottom surface of the cylindrical section to divide the ventilation holes into inner and outer groups. The top of the funnel section corresponds to the position of the flow-dividing baffle. Inside the pot cover, from top to bottom, are arranged an inner pot, an electromagnetic coil, a fan, and a filter screen. The filter screen includes a base plate, on which a return flow baffle is provided. When the automatic cooking machine pot module of this utility model is working, cold air is drawn into the interior of the pot cover by the fan and exchanges heat with the electromagnetic coil and the bottom of the inner pot, resulting in high heat exchange efficiency. The filter screen at the bottom of the funnel section is designed with a return flow baffle structure, which reduces the entry of soot particles when air passes through this structure.

The invention belongs to the technical field of catalysts, and particularly relates to a micron-sized macroporous cerium-zirconium-praseodymium composite material as well as a preparation method and application thereof. According to the preparation method, the micron-sized macroporous CeO2-ZrO2-PrO2 composite material is constructed by using the starch which is low in price and wide in source as a template agent under an industrial coprecipitation process, and the micron-sized macroporous CeO2-ZrO2-PrO2 composite material is used as a catalyst, so that the contact efficiency between the catalyst and soot particles can be improved, and the performance of the catalyst for purifying the soot particles in the tail gas of the diesel engine is further improved.

The utility model provides a waste gas treatment device in asphalt production. The waste gas treatment device comprises a spray tank, a waste gas inlet pipe, a first spray pipe, a filler ball layer, a combustion chamber, a second spray pipe, a hose, a spray liquid system, a blow-off pipe, a gas outlet pipe, an activated carbon layer, a filter chamber and an exhaust pipe, according to the utility model, the spraying tank is arranged, smoke dust adsorption can be carried out on waste gas after combustion, the filler ball layer is arranged in the spraying tank, the contact duration and the contact area of spraying liquid and the combustion waste gas are increased, so that the smoke dust absorption quality is improved, and toxic gas adsorption is carried out on the sprayed combustion waste gas through the activated carbon layer; therefore, the phenomenon that a large number of smoke particles and some harmful substances in combustion waste gas flow into the atmosphere when a combustion method is adopted is eliminated.

The application discloses a slagging anti-blocking device for sludge treatment boiler, which comprises an ignition tank, an air pipe, a gas pipe, a first electromagnetic valve, a flame arrester, a pulse tank, a spraying pipe and an air compressor, the air compressor is connected with a shunt box, the shunt box is matched with a first branch and a second branch, the first branch is connected with the ignition tank, a second electromagnetic valve is installed on the first branch, a third electromagnetic valve and a check valve are installed on the second branch, the flame arrester is also installed on the first branch, a sweeping device is connected with the second branch, the check valve is arranged between the third electromagnetic valve and the sweeping device, the spraying pipe vertically penetrates through the sweeping device, high-speed airflow sprayed by the sweeping device acts on the spraying pipe, a rotating cleaning device is installed at the lower part of the spraying pipe, and the elbow position of the spraying pipe is located in the rotating cleaning device; the device can prevent smoke dust particles from entering reversely.

The application provides a kind of double-phase fluidized roasting method, the roasting furnace body of the method is straight cylinder cavity, and the sealing cavity surrounded by the pouring dome and the heat preservation structure independently arranged in the furnace top;The feeding port and the discharge port of the roasting furnace are opened on the same side of the furnace body, and the feeding port is located above the discharge port;The feeding port is equipped with a drum thrower;The bottom of the roasting furnace is provided with a plurality of dispersedly arranged heat removal devices;The flue of the roasting furnace is provided with an air supplement device;During the dense phase oxidation desulfurization process of raw materials, the heat removal device is uniformly heat exchanged to stabilize the bed temperature, and the high temperature steam discharged by the heat removal device is used as the medium for maintaining the constant temperature of the sealing cavity;The air supplement device is used to supplement oxygen-rich air into the flue to form a dilute phase secondary roasting zone.The furnace top of the application uses a heat preservation structure independent of the dome, prolonging the service life of the furnace top;The feeding port is arranged above the discharge port on the same side, and the raw material into the furnace hinders the smoke dust particles in the upward flue gas, reducing the dust content of the flue gas.

The invention belongs to the technical field of tower foot welding, and particularly relates to electric angle steel tower foot welding equipment which comprises a supporting frame, a transverse sliding frame, a positioning table, a position measuring type driving mechanism, a dust collecting type welding and connecting mechanism, a compressed air type anti-scattering mechanism and a controller. The transverse sliding frame is arranged on the upper wall of the supporting frame, and the positioning tables are symmetrically arranged on the upper walls of the two ends of the supporting frame. The position measuring type driving mechanism is arranged on the transverse sliding frame and comprises driving assemblies, sliding assemblies and position measuring assemblies, the driving assemblies are arranged on the upper walls of the two ends of the transverse sliding frame, the sliding assemblies are arranged on the upper wall of the transverse sliding frame, and the position measuring assemblies are arranged on the side walls of the driving assemblies. According to the tower foot welding equipment for the electric angle steel tower, welding smoke generated in the welding process can be collected, smoke particles in the welding smoke can be extruded into cakes, and secondary diffusion of smoke is prevented.

The invention discloses a catalyst for simultaneously eliminating soot particles and nitrogen oxides in diesel engine tail gas and a preparation method and application thereof, the composition of the catalyst is A [alpha] B [beta] C [gamma] D [x] E [1-x] O [delta], A is a La element, B is one or more of K, Rb and Cs elements, C is one or more of noble metals Pt, Pd, Rh and Ir elements, and x is more than or equal to 1. D is one or more of Co and Mn elements, and E is Fe element; alpha, beta, gamma, x and (1-x) respectively represent atomic ratios of the elements, the value range of alpha is 0.6-0.9, the value range of beta is 0.05-0.2, the value range of gamma is 0.05-0.2, the value range of x is 0.1-0.9, and delta is a numerical value determined by oxygen of each oxide. The prepared catalyst is high in catalytic activity, in the simulated diesel engine tail gas atmosphere, the maximum combustion temperature of soot oxidation can be reduced to 400 DEG C or below from 600 DEG C in the absence of the catalyst, the conversion rate of nitrogen oxides is 40%, and the catalyst can effectively remove soot particles and nitrogen oxides in diesel engine tail gas at the same time.

Method (100) for the automated cleaning of a protective gas guide element (12) of a burner, wherein the shielding gas guiding element (12) comprises an elongated component with an internal shielding gas channel, the procedure (100) comprises the following steps: - Providing (102) a cleaning unit (10) with at least one spring-elastic tension spring (14), - Feeding (104) the burner with the attached shielding gas guide element (12) under the cleaning unit (10), - Threading (106) the tension spring (14) into the inner channel of the shielding gas guide element (12), - Moving the burner up and down (108) relative to the cleaning unit (10) so that the tension spring (14) is guided along inside the shielding gas guide element, - Removal (110) of adhering weld spatter and soot particles by the mechanical action of the tension spring (14).

This invention relates to a swirl-type particulate oxidation catalyst for exhaust gas aftertreatment via micro-injection. The catalyst includes a reactor with a swirl channel along its axial direction. A catalytic coating is applied to the swirl channel. The reactor also includes a turbulence mechanism to increase the contact time between the airflow and the catalytic coating. The turbulence mechanism includes at least one turbulence element disposed within the swirl channel and a drive module for driving the turbulence element to reciprocate axially within the swirl channel. During the reciprocating motion, the turbulence element causes a periodic change in the local cross-sectional area of ​​the swirl channel, altering the velocity and direction of the airflow passing through it. This invention enables the exhaust gas to rotate at high speed within the swirl channel, using centrifugal force to throw soot particles towards the channel wall, increasing the collision probability between soot and the catalytic coating, and simultaneously extending the residence time of soot within the catalyst, thereby improving oxidation efficiency.

The present application relates to the field of flue gas treatment, in particular to a flue gas treatment device for coal-biomass-sludge mixed combustion, comprising a support, a smoke inlet box, a smoke dust treatment box and a flue gas treatment box are sequentially installed on the top of the support from bottom to top, a smoke dust filtering assembly for filtering smoke dust and a smoke dust cleaning assembly for cleaning smoke dust are installed in the smoke dust treatment box, a dust discharge hopper is installed at the bottom of the smoke inlet box, a flue gas treatment assembly for reheating treatment of flue gas, a flue gas spraying assembly for spraying cooling and catalytic treatment of flue gas are installed in the flue gas treatment box, and a smoke discharge hood is installed at the top of the flue gas treatment box. The smoke dust particles in the flue gas are filtered by the smoke dust filtering assembly, the filtered flue gas continues to enter the inside of the flue gas treatment box upwards, the flue gas treatment assembly can perform secondary heating combustion on the flue gas, thereby burning and purifying the dioxin substances in the flue gas, and discharging from the top of the smoke discharge hood.

An intelligent laser ground scrubber is provided. A laser cleaning device cleans dirt on materials to be cleaned or on ground. A laser lens surface anti-dust device prevents smoke dust particles from adhering to the surface of the lens of the laser cleaning device and prevents the lens from overheating and burning. A dust collection and smoke removal device discharges cleaned smoke dust impurities to a multistage activated carbon filter screen with an adsorption function along an air flue. A SLAM intelligent algorithm control system and a visual device with sensor are used for positioning and mapping and sending out control signals to drive a walking device to move and avoid obstacles. A power supply is connected with the laser cleaning device, the dust collection and smoke removal device, the walking device, a drive controller, the visual device with sensor and the SLAM intelligent algorithm control system, respectively.

The application relates to the technical field of filtering devices, and discloses a dust filtering device for waste gas treatment of thermal power generation, which comprises a base, a support arranged at the top of the base, a dust removal mechanism arranged at the top of the support, a wind pipe fixedly communicated with the top of the dust removal mechanism, a dust collecting bin fixedly connected to the bottom of the dust removal mechanism, a liquid spraying device fixedly arranged at the top of the base, an agitating mechanism arranged in the liquid spraying device, a dirty material box communicated with the front face of the liquid spraying device, an exhaust pipe fixedly communicated with the top of the dirty material box, and a tank body, an air inlet, a material guide plate, an impeller, a scraper, an activated carbon filter plate and an air outlet pipe arranged in the dust removal mechanism, wherein the material guide plate is fixedly connected to the inner wall of the tank body. The application can effectively prevent excessive smoke dust particles from being accumulated to block the activated carbon filter plate, affect the air outlet amount, reduce the treatment efficiency, prolong the service life of the activated carbon filter plate, reduce the replacement frequency and reduce the maintenance cost.

A method of forming an optical element is provided. The method includes producing silica-based soot particles using chemical vapor deposition, the silica-based soot particles having an average particle size of between about 0.05 μm and about 0.25 μm. The method also includes forming a soot compact from the silica-based soot particles and doping the soot compact with a halogen in a closed system by contacting the silica-based soot compact with a halogen-containing gas in the closed system at a temperature of less than about 1200° C.

The utility model relates to the technical field of flue gas treatment, in particular to a gypsum board calcination flue gas treatment device which comprises a spraying mechanism and a flue gas treatment mechanism, the spraying mechanism comprises a spraying box body, the flue gas treatment mechanism comprises a flue gas treatment box body, and the gypsum board calcination flue gas treatment device is characterized in that the bottom of the spraying box body is connected with a flue gas inlet; a smoke outlet is formed in the side wall of the bottom of the smoke treatment box body; the top of the spraying box body is communicated with the flue gas treatment box body through the flue gas buffer box body, so that a flue gas moving path is in an inverted U shape. According to the utility model, the flue gas moving path is inverted-U-shaped, so that the gypsum board calcining flue gas is prevented from rising in a straight tube and being exhausted too quickly; the high-temperature hot flue gas is cooled through the composite graphene filter layer, and smoke dust particles in the high-temperature hot flue gas are filtered for the first time; the smoke particles are secondarily filtered by the smoke dispersing mechanism and the non-woven fabric filtering mechanism, so that the dust removal treatment on the smoke is finally realized; the structure is reasonable, use is convenient, and the smoke dust filtering effect is good.

The invention discloses an acid-making and dust-removing device for lead smelting, and belongs to the related technical field of acid-making and dust-removing for lead smelting, the acid-making and dust-removing device for lead smelting comprises a mounting rack, the inner side of the mounting rack is sequentially provided with a heat pipe heat exchanger, a gravity settling chamber, an electric dust-removing chamber and a spraying chamber, and the bottom of the gravity settling chamber and the bottom of the electric dust-removing chamber are fixedly connected with humidifying boxes used for humidifying smoke dust; the bottom of the spraying chamber is fixedly connected with a dehumidification box used for reducing the humidity of the smoke dust, the bottom of the humidification box and the bottom of the dehumidification box are each provided with a discharge outlet, and a conveying auger is installed at the bottom of each discharge outlet; and smoke dust particles in a plurality of dust removal processes can be treated in a centralized manner, so that troubles caused to subsequent conveying and collection when dust is too dry or the humidity is too high are avoided.

The utility model relates to the technical field of axial-flow type fire-fighting smoke exhaust fans, solves the technical problem that impurities falling during cleaning cannot be collected, and particularly relates to a smoke particle treatment structure for an axial-flow type fire-fighting smoke exhaust fan, which comprises an air pipe serving as a supporting foundation, and butt joint side rings are fixedly connected to two ends of the air pipe. The middle of the top end and the middle of the bottom end of the air pipe are fixedly connected with fixing frames, the air pipe is provided with an external air outlet assembly used for smoke exhaust and ventilation, and an automatic cleaning and filtering assembly used for filtering particle smoke dust is arranged on a butt joint edge ring of the air outlet end of the air pipe. Due to the arrangement of the automatic cleaning and filtering assembly, a filtering part can be swept and cleaned, power is provided by using the mechanical equipment for providing power during ventilation, the production cost is reduced, dust generated by cleaning can be collected, and the situation that the dust flows back into a room can be avoided.

The invention relates to the technical field of rock slope surface drilling, and discloses soil and rock mixed slope surface drilling equipment and method.The soil and rock mixed slope surface drilling equipment comprises a moving frame and further comprises a drilling frame, a drilling device, a drilling device and a drilling device, and the drilling frame is fixedly connected to the top of the moving frame; the drilling frame is provided with drilling parts and traction parts, the drilling parts are used for drilling the slope surface, and the traction parts are arranged on the two sides of the top of the moving frame; the dust extraction part is mounted at the top of the movable frame; the drilling rod rotates and is linked with the acceleration gear set through friction transmission, the liquid stirring shaft and the air guide shaft are driven to rotate in an accelerated mode, on one hand, negative pressure is formed in the air guide bin, drilling smoke dust is directionally adsorbed, on the other hand, the top of the liquid stirring paddle hits the water surface to generate water mist, and smoke dust particles are efficiently captured and settled; and a plurality of groups of staggered liquid guide plates are arranged in the water washing bin, so that water mist is prevented from being discharged, water consumption is reduced, self-cleaning of the dust filtering plate is realized by utilizing gravity backflow during shutdown, and the filtering effect of the dust filtering plate is ensured.

The glass fiber reinforced plastic anode system of the dust remover is provided with a dust removal box and an anode tube, an assembly space used for further installing the anode tube is arranged in the dust removal box, a supporting platform is arranged at the bottom of the dust removal box, and a side baffle is arranged on the supporting platform. Tens of thousands of volts of direct-current high-voltage electricity is applied between the anode tube and the cathode corona wire through the high-voltage current device to form a strong electric field, a corona layer can be generated around the corona wire under the action of the electric field, air in the corona layer is ionized, a large number of negative ions and a small number of positive ions are generated, and the ions collide with smoke dust particles entering the dust remover to generate negative ions. And charging the material. The electrified smoke particles can move towards the anode tube under the action of electric field force and are finally adsorbed on the surface of the anode, so that dust can be adsorbed in a centralized manner, and then dust is treated in a centralized manner.

The application relates to the field of aviation technology, in particular to a method for constructing a fragmentation evolution mechanism model of aviation kerosene combustion soot particles, which comprises the following steps: obtaining a kinetic mechanism of aviation kerosene fuel combustion chemical reaction; performing soot particle dynamics simulation according to a simplified mechanism and a particle group balance theory to obtain a soot particle balance mechanism model, then incorporating a particle fragmentation mechanism, and determining a soot particle balance equation by using a statistical mechanics method; coupling the soot particle balance equation and a Navier-Stokes (N-S) equation to simulate a soot generation process of aviation kerosene fuel in a combustion process, obtaining a space-time variation law of soot particle size distribution under different working conditions, and finally predicting an evolution process of the soot particles generated by aviation kerosene fuel combustion under different working conditions. Therefore, the method solves the problems in the prior art that the fragmentation mechanism of the soot particles is ignored, and the simulation and prediction accuracy of the aviation kerosene combustion generated soot particles is low.

The utility model provides a pitot tube and a flow velocity detection system, and the pitot tube comprises a total pressure guide tube; a static pressure guide pipe; the sampling nozzle is a C-shaped pipe, and the sampling nozzle comprises sample injection openings in the two ends and a connecting opening located between the two sample injection openings; the far end of the total pressure guide pipe and / or the far end of the static pressure guide pipe are / is connected with the sampling nozzle through the connector. According to the pitot tube provided by the invention, smoke dust is difficult to deposit on the sampling nozzle of the C-shaped tube; the area of the opening facing / backing to the fluid is far smaller than the inner surface area of the sampling nozzle, and even if smoke dust is deposited on the inner surface of the sampling nozzle, the sampling nozzle can be used for flow velocity detection for a longer time; and when smoke dust deposition occurs in long-term use, high-pressure gas can be introduced from one sample introduction opening of the sampling nozzle and flows out from the other sample introduction opening, so that the stroke of the high-pressure gas is smaller, the pressure loss is small, and smoke dust particles are easier to clean.

The utility model provides an adjusting device of a particulate matter measuring system. The adjusting device comprises a light source assembly, a conical lens, a measuring chamber, a light receiving assembly and a dimming device, the light source assembly is used for emitting parallel light, the conical lens converts the parallel light into a conical annular light beam, smoke particles are introduced into the measuring chamber, the annular light beam passes through a two-phase flow containing the smoke particles and acts with the particles to generate scattered light, and the scattered light generated by the particles in the annular measuring area is received by the light receiving assembly; the concentration sensor is used for obtaining concentration of particles; the dimming device is used for calibration; pure gas without particulate matter is filled in the measuring area, the annular light beam does not generate scattered light, and after part of light of the axis light beam is blocked by the dimming device, the axis light beam is received by the light receiving assembly and used for cross-point calibration. The adjusting device of the particulate matter measuring system has the obvious advantages of simplifying the calibration process, improving the calibration precision, enhancing the system flexibility, optimizing the structural design and the like.

The application discloses a centrifugal fan for fire-fighting ventilation and relates to the field of centrifugal fans.The centrifugal fan for fire-fighting ventilation is characterized in that the groove of the connecting disc is matched with the cavity of the cavity disc, the cavity structure formed between the groove of the connecting disc and the cavity disc is utilized in the smoke guiding space, the cavity structure of the cavity disc itself is matched, a double cavity is formed, the cavity is utilized to block the heat in the smoke, the transmission amount of the smoke heat to the motor is reduced, the heat contained in the fire smoke is prevented from being transmitted to the motor when the smoke is discharged, the motor temperature is prevented from being overheated, the motor is prevented from being damaged, the smoke discharging work can be continuously carried out, the smoke is rotated by the outer leaf plate close to the inner wall of the cavity cylinder, the rotation speed of the smoke at the scraping position is ensured, the rotation speed of the smoke at the scraping position is prevented from being low, the scraped adhered smoke dust particles are prevented from being unable to be driven, the smoke dust particles are prevented from falling and piling up, and the piling up and blockage in the fan are prevented.

The invention relates to the technical field of cloth bag dust removal, in particular to a hot galvanizing flue gas collecting and treating device. Comprising a cylinder body and a cylinder frame supported and connected below the cylinder body, the barrel body is formed by combining a cylindrical part at the upper part and an inverted cone part at the lower part; an air outlet joint is arranged at the top of the cylinder body; an air inlet joint is arranged on the arc-shaped outer wall of the cylindrical part of the barrel body; a discharge valve is arranged at the bottom of the barrel; a valve rod with a plurality of valves is rotationally connected in the discharge valve; the valve rod is driven by a lower motor; an inverted cone cylinder is arranged on the inner side of the inverted cone part of the cylinder body; the bottom of the inverted conical cylinder is fixedly connected with the inner side of the cylinder body through a fixing block; according to the invention, flue gas enters the cylinder and is subjected to rotating centrifugation, so that gas and smoke particles in the flue gas are preliminarily separated and then penetrate through the cloth bag, the difficulty of the flue gas penetrating through the cloth bag is greatly reduced, and the flue gas treatment efficiency is improved.

The application discloses a soot particle segmentation method and system based on center prediction and radial regression of deep learning, and relates to the fields of combustion diagnosis and computer vision. The method first acquires soot particle image and mask data, extracts particle center points, generates multi-direction radial distance labels under a polar coordinate system, and constructs a training data set; a segmentation model including a feature extraction backbone network, a feature fusion decoder, and a center prediction and radial regression double-branch prediction head is built; a joint loss function fusing a center focal loss, a regression loss, a polar coordinate intersection-over-union loss, and a ray smoothness loss is adopted; finally, the image to be measured is input into the model, data augmentation, effective center point extraction, polygon contour reconstruction, and redundancy filtering are performed during testing, and a soot particle instance segmentation result is output. The application gets rid of the limitation of a traditional bounding box, and significantly improves the segmentation accuracy and contour fitting degree of high-concentration and heavily-shielded soot particles through accurate center positioning and polar coordinate radial regression.