6207 results about "Smoke" patented technology

Electric heat for generating smoke from tobacco or the like in a hookah type smoking pipe. Electric heat is obtained from an electrically powered heating element which may be placed proximate the tobacco. The heating element may be contained within a housing which in turn may be placed above the smoking chamber of the hookah. The housing may have adjustably damped holes disposed to pass air over the heating element. Electrical circuitry serving the heating element may comprise a step down transformer and a voltage adjusting switch. The heating element may be integral with the hookah, may take the form of a separate component which is mountable over the smoking chamber of the hookah, or may comprise a free standing assembly which may be placed to stand adjacent to the hookah.

The invention relates to the technical field of fire safety monitoring, in particular to a firework identification system and method based on multi-modal fusion perception, and the core of the scheme is a visible light, multispectral and temperature three-modal framework: feature extraction optimization of each modal, improved YOLOv8s for visible light branches, dynamic background modeling and flame color screening, and multi-modal fusion perception. False positive is rejected by a multispectral branch depending on a waveband ratio and an index, an error compensation algorithm is introduced into a thermopile branch, and finally, a final smoke and fire area and the confidence coefficient thereof are determined by associating a three-mode area through collaborative decision. According to the scheme, the complex environment adaptability and the recognition reliability can be improved, the false alarm risk is reduced, the extremely-early smoke and fire detection capability is enhanced, good real-time performance and deployment flexibility are achieved, and the method is suitable for various types of fire safety monitoring scenes.

The present invention relates to the technical field of waste heat recovery equipment, and specifically discloses a waste heat recovery device for flue gas in a thermal power plant. It includes a box body with an upper smoke chamber, a heat exchange chamber and a lower smoke chamber inside. A number of smoke pipes connecting the upper smoke chamber and the lower smoke chamber are fixed in the heat exchange chamber; above the smoke pipes, there is a piston cylinder fixed by the box body; the upper end of the piston cylinder is connected to a high-pressure gas supply pipe, and a piston is arranged inside. The piston is connected with a scraping head through a push rod; side holes are provided on the push rod; when the high-pressure gas drives the piston to move downward, the scraping head moves along the inner wall of the smoke pipe to scrape off the ash slag. The waste heat recovery device for flue gas in this thermal power plant has a cleaning function and a better cleaning effect, high heat exchange efficiency and good waste heat recovery effect. The waste heat recovery device for flue gas in this thermal power plant can be automatically cleaned without disassembling components, is fast and efficient, and can be operated online. The ash slag scraped off during the cleaning process can be centrally recovered, avoiding re-mixing into the flue gas again, reducing the workload in the flue gas dust treatment link, and saving the subsequent environmental protection treatment cost.

The invention discloses a tunnel fire air curtain smoke prevention control method and system, and relates to the technical field of intelligent fire fighting, and the method comprises the steps: building a digital twinborn prediction model, and generating a fire source position coordinate and a smoke diffusion trend prediction map through multi-physics field coupling simulation; analyzing the stability requirement of the air curtain jet flow through a Brapare-Prandtt boundary layer analysis algorithm, and generating a jet flow enhancement requirement parameter table in combination with temperature gradient correction; optimizing an acoustic vortex main frequency band by adopting a Slodhaar number, and generating an acoustic vortex control parameter set in combination with a matched sound pressure level and a configured resonator phase difference; and converting the acoustic vortex control parameter set into an execution instruction, monitoring the jet velocity, the vortex street stability and the smoke retardation effect in real time, and dynamically correcting the parameters of the digital twinborn prediction model. According to the method, physical quantity outline matching of the blocking intensity and the sound pressure level is achieved through the sound intensity-momentum equivalent method, and the optimal phase configuration is determined in combination with POD modal analysis.

The invention discloses an automatic control method and system for a variable-frequency range hood, and belongs to the technical field of intelligent control of household appliances, and the method comprises the following steps: collecting oil smoke concentration data, temperature data and airflow disturbance data in a kitchen environment in real time by using a non-contact multi-mode sensor; constructing a multivariable fusion model, and generating a comprehensive environment state vector through feature extraction and weight distribution; an LSTM prediction model is constructed to abstract the current lampblack distribution state and surrounding environment characteristics, and an optimal fan rotating speed control strategy is generated in combination with an air volume-energy consumption-noise multi-target optimization model and a genetic algorithm; and the fan rotating speed is adjusted in real time according to the optimal fan rotating speed control strategy. The non-contact multi-mode sensor is used for collecting oil smoke concentration, temperature and airflow disturbance data in the kitchen environment in real time, the multivariable fusion algorithm and the time sequence prediction model are operated in combination with the edge calculation chip, and efficient, energy-saving and low-noise air volume control is achieved.

The invention discloses an intelligent building fire monitoring method, and relates to the field of building fire monitoring, and the method comprises the steps: collecting three types of fire characterization parameters: temperature, smoke concentration and carbon monoxide concentration; the method comprises the following steps: acquiring fire characterization parameters of each node at an initial frequency, comparing the fire characterization parameters to trigger primary warning, then increasing the acquisition frequency for a primary warning node and adjacent nodes, and continuously acquiring multiple groups of data; fire source initial coordinates are determined through positioning anchor points and parameter gradient differences, the coordinate range is continuously corrected, and specific fire source position coordinates are provided; and dynamically generating a fire diffusion path according to the smoke diffusion path of the monitoring node in the fire source coordinate range, tracking the fire diffusion path and providing diffusion direction prediction. The accuracy and timeliness of intelligent building fire monitoring are improved, the quick response to fire dangerous cases is facilitated, and the safety of buildings and personnel is guaranteed.

The invention discloses a kitchen smoke exhaust space vector control and airflow organization collaborative optimization management method and system, and relates to the technical field of data processing. According to the method, kitchen space topology is constructed, multiple sensors are deployed to collect oil smoke concentration, temperature, wind speed and equipment operation data, and a structured environment tensor is generated through interpolation; solving a high-precision oil smoke motion vector field, generating a dynamic diffusion path, positioning an oil smoke core area, dynamically marking a personnel risk area, and synthesizing a thermal plume main path; an LSTM model is adopted to predict equipment load and fault probability, and a dynamic power consumption strategy is generated; constructing a multi-objective function of clearance rate, energy consumption and comfort, outputting a Pareto optimal solution set through a genetic algorithm, and dynamically selecting a control scheme according to working conditions; and finally, an instruction is converted into coordinated action of air exhaust and air supplement, energy consumption is reduced through PID real-time parameter adjustment and closed-loop correction, and meanwhile the effects of improving the oil smoke removal efficiency and accurately controlling the air speed of a personnel area within a comfortable range are achieved.

The invention discloses an efficient gradient utilization medium and low temperature flue gas waste heat recovery system and method, and relates to the technical field of waste heat recovery. When the contact time between the medium and low temperature flue gas and a heat medium is short and the heat conduction contact area is small, the heat transferred to the heat medium by the medium and low temperature flue gas is small, the waste heat recovery amount is small, and the recovery effect is affected. The arc-shaped recess in the center of the inner side of the heat medium bin is matched with the smoke exhaust mechanism, the contact area between the inner side of the heat medium bin and smoke is increased through the recess, the smoke exhaust mechanism limits smoke exhaust, the contact area between the smoke and the heat medium bin is increased, and meanwhile the contact time between the smoke and the heat medium bin is prolonged; the heat of medium and low temperature flue gas is more effectively transferred to the heat medium in the heat medium bin, and the situation that the flue gas and the heat medium bin are small in contact area and short in retention time, heat is not completely transferred and discharged, and the waste heat recycling rate is low is avoided.

The invention relates to the technical field of smoke exhaust waste heat recovery devices, and discloses a waste heat utilization and recovery device and method applied to boiler combustion smoke, and the waste heat utilization and recovery device applied to the boiler combustion smoke comprises a bottom frame, and a heat absorption mechanism, a middle section partition plate and a heat release assembly which are fixedly mounted at the top of the bottom frame in sequence; through the arrangement of the heat buffering assembly, when the temperature of smoke is high, the heat absorbing fins can absorb part of heat and conduct the heat to the medium storage cavity, a medium in the medium storage cavity absorbs the heat to be evaporated into gas, and the gas is filled with an inflatable heat conduction film through a gas flowing cavity; the inflatable heat conduction film is expanded to store the gaseous medium, the gaseous medium is dissipated when the smoke temperature is low, the gaseous medium is condensed into liquid after heat dissipation, then the liquid is absorbed by the liquid absorption core plate and returns to the medium storage cavity, and therefore heat transfer and buffering are facilitated, and damage of thermal shock to device parts is reduced.

The invention discloses an intelligent dust removal system and method for a raw material conveying system, solves the problems that an induced draft fan is started for a long time and the working state is not intelligent enough during dust removal in the prior art, and has the beneficial effects that the energy consumption of the raw material conveying system is reduced, and the good energy-saving effect is achieved. According to the specific scheme, the intelligent dust removal system of the raw material conveying system comprises a dust collection component, and the dust collection component comprises a dust collection cover installed between every two adjacent raw material conveying belts; the data acquisition part comprises a camera and a smoke dust sensor arranged in the dust collection cover; the camera, the smoke sensor, the valve and the induced draft fan are separately connected with the controller, the controller judges the opening and closing state of the dust suction inlet valve according to the working condition, collected by the camera, of the raw material conveying belt, and the smoke sensor obtains the smoke concentration of each dust collection hood and sends the smoke concentration to the controller; the controller adjusts the frequency of the induced draft fan according to the smoke concentration, collected by the smoke sensor, in the dust hood.

The invention provides an external smoke exhaust system of a laser cutting machine and a working method, relates to the field of laser cutting machines, and aims to solve the problems that smoke leakage of an existing laser cutting machine affects operation of a laser element. Air flow output by the air feeder can cover a smoke dust area where the laser head works, scattered smoke dust is blown to the inlet end of the smoke collecting hood in an oriented mode, disordered diffusion of the smoke dust is avoided, the smoke dust and high-temperature chippings are guided to the smoke collecting hood in the horizontal direction in an oriented mode through the horizontal air flow output by the air feeder instead of being guided upwards, and the smoke discharging path is in the horizontal direction. Smoke dust and high-temperature chippings are prevented from floating upwards to the laser element area of the cutting head, the possibility of contact between the high-temperature chippings and the laser element is cut off from the smoke exhaust path, and normal operation of the laser element is protected.

The invention discloses a low-smoke flame-retardant environment-friendly low-voltage power cable, and relates to the technical field of power cables, a plurality of thermal expansion flame-retardant strips are adhered to the inner side of a relay isolation sleeve at equal intervals, inner different buffer strips sleeve the inner sides of the plurality of thermal expansion flame-retardant strips, and corrugated metal outer guide sleeves are clamped to the inner sides of the plurality of inner different buffer strips; according to the cable, the problems that in the prior art, due to the fact that effective flame-retardant and heat-resistant components and oxygen and fire insulation components are not arranged in the cable, and a large amount of air is left in the cable, the cable is not prone to damage, and the cable is not prone to damage due to the fact that the cable is not internally provided with the effective flame-retardant and heat-resistant components and oxygen and fire insulation components are effectively solved. And through internal rapid self-extinguishing, the increase of the internal fire condition caused by flame spreading is reduced, the fire extinguishing speed of the cable is improved, and the situation that the overall body is greatly influenced when part of the cable is damaged due to insufficient fireproof and flame-retardant effects is reduced.

The invention discloses a method for rapidly evaluating the safety of a structure after a bridge fire, and the method comprises the steps: obtaining an air temperature, flue gas speed distribution, air pressure distribution and a flame flue gas image through simulating a fire scene; the method comprises the following steps: when simulating that a fire enters a fire quasi-steady-state stage, obtaining a fire smoke image for completely describing a dynamic change process of thermal plume and a smoke speed distribution image and an air pressure distribution image above a fire source, and forming a training sample; constructing a long and short term memory network model; training the model; shooting a flame smoke image of a fire scene, inputting the flame smoke image into the trained long-short term memory network model, and outputting a smoke speed distribution image; calculating a final fire source heat release rate according to the flame smoke image and the smoke speed distribution image; the average temperature of the components in the cable at different moments is calculated; according to the average temperature of the components in the cable at different moments, whether the structural components lose efficacy or not is judged. According to the invention, the monitoring accuracy and timeliness are improved.

The invention discloses a range hood. The range hood comprises a box body, a smoke gathering plate and an air curtain mechanism, wherein the box body is provided with a front end facing a user and a rear end opposite to the front end; the smoke gathering plate is arranged on the box body and matched with the box body to form a flow guide cavity, in the direction from the front end to the rear end of the box body, the distance between the side, close to the front end, of the smoke gathering plate and the cooking bench surface is smaller than the distance between the side, close to the rear end, of the smoke gathering plate and the cooking bench surface, two layers of smoke inlet nets are arranged at a smoke inlet of the smoke gathering plate, and a flow guide space is formed between the two layers of smoke inlet nets in a spaced mode; the air curtain mechanism is arranged at the front end of the box body, and an air outlet of the air curtain mechanism communicates with the diversion space. The smoke gathering plate and the box body are oppositely arranged, so that the distance between the side, close to a user, of the smoke gathering plate and the cooking bench surface is smaller than the distance between the side, away from the user, of the smoke gathering plate and the cooking bench surface, oil smoke can be gathered in the direction away from the user, contact between the oil smoke and the user is reduced, and the problem of smoke leakage at the front end is solved.

The invention discloses an HRR-based acoustic fire hazard type identification method, device and equipment and a medium, and relates to the technical field of fire hazard detection, and the method comprises the steps: obtaining an original acoustic signal through transmitting a high-frequency modulation ultrasonic wave and receiving a flame region reflection echo, obtaining channel impulse response data through channel estimation, and carrying out the channel impulse response data; flame features are extracted, a heat release rate curve is calculated and generated, finally fire type identification and fire behavior stage determination are completed based on the curve, dense smoke, shielding and illumination interference can be resisted, accurate quantification of the heat release rate is realized, fire type identification and fire behavior development stage determination can be finely carried out, and the accuracy of fire behavior determination is improved. And a stable and reliable technical support is provided for fire monitoring and emergency decision making.

The invention relates to the technical field of environmental protection, in particular to a spraying dust removal method, equipment and system. The spraying dust removal equipment comprises an outer cylinder and an adjusting mechanism, wherein a smoke inlet is formed in the lower part of the outer cylinder. The adjusting mechanism comprises an adjusting assembly and a plurality of turbulent balls. The adjusting assembly comprises a pull ring, a net bag and a driving unit. The smaller the initial dust air flow entering the smoke inlet is, the larger the upward moving stroke of the pull ring driven by the driving unit is, the upward moving of the pull ring drives the middle of the net bag to be further sunken downwards, the structure is convenient for weak air flow to preferentially pass through the periphery of the net bag with a small number of turbulent balls, effective turbulent washing is formed in the area, and the working efficiency is improved; and the normal operation and the dust removal effect of the equipment under low load are ensured. The invention provides a spraying dust removal method, equipment and a system, aiming at solving the problems that the dust removal efficiency is low and even the dust removal device cannot work when the flow of dust gas introduced into the existing dust removal device does not reach a preset dust gas flow range value.

The present invention belongs to the field of heat-not-burn cigarettes, and particularly relates to a hermetically heated cigarette rod with controllable draw resistance. The cigarette rod includes, from upstream to downstream, a tobacco section (1) with a sealed upstream end, a controllable draw resistance section (2), and a functional filter section (3) that are coaxially abutted in sequence. The cigarette rod is wrapped with an outer wrapper (4); wherein, the controllable draw resistance section (2) is a tube body having an axial central cavity (2-1) and circumferential sidewall through holes (2-2); the controllable draw resistance section (2) further includes a restricting and guiding element (2-3) disposed in the central cavity (2-1) and having an axial channel. The cigarette rod of the present invention is provided with a barrier layer covering the circumferential sidewall and the sidewall through holes of the central cavity in the controllable draw resistance section, which has a certain air permeability. During suction, it does not affect the inflow of external air; when not sucking, the smoke will not escape through the sidewall through holes either. Therefore, the loss of smoke can be effectively reduced.

The invention discloses an intelligent smoke furnace catalysis operation condition suitability grading method. The method comprises the steps that basic parameters of an operation point are obtained; calling a Passive-Toner algorithm to calculate the atmospheric stability grade of the operation point; the continuous cigarette lighting source intensity is calculated according to the used flame bar combustion data; calculating the vertical airflow distribution of the operation point by adopting a Matviyerv vertical velocity theoretical model based on the altitude and vertical airflow observation data of the operation point; based on the continuous cigarette lighting source intensity, calculating the ice nucleus number concentration distribution in the cloud in combination with the vertical airflow distribution and the horizontal wind field; calculating an operation suitability index by adopting a comprehensive index algorithm in combination with the lifting condensation height, the cloud amount and the cloud classification data; and performing grading processing on the job suitability index according to a set threshold value combination so as to output a plurality of job suitability grading results. According to the method, comprehensive analysis is carried out by considering the meteorological condition and the catalytic condition of the operation point, so that the accuracy and the credibility of an operation condition suitability judgment result are improved to a certain extent.

The present invention discloses a metallurgical nozzle comprising a material channel and a reaction gas channel nested within each other. An entrainment channel is concentrically disposed within the material channel, a rotating shaft is disposed at the center of the entrainment channel, a blade assembly is connected to the bottom of the rotating shaft, a drive device is disposed at the top of the rotating shaft, and exhaust holes are provided in the wall of the entrainment channel. The reaction gas channel, the material channel, and the upper end of the entrainment channel are not interconnected. The present invention has a simple structure, improves the mixing reaction of gas and material particles, reduces smoke and dust production, and more centrally concentrates the reaction, effectively reducing erosion of the reaction tower wall.

The invention discloses an elevator fire intelligent early warning method and system, and the method comprises the steps: generating a dynamic fire risk index according to smoke concentration, temperature gradient, gas components and infrared image data collected by a multi-mode sensor in an elevator shaft; constructing a multi-dimensional risk feature vector based on the dynamic fire risk index; according to the multi-dimensional risk feature vector, generating an escape path instruction including a stopping floor sequence and a speed curve; and based on infrared thermal imaging data and voice recognition data in the elevator car, the panic level and behavior mode of people are simulated through a confrontation generative network, an elevator door control strategy, a ventilation system regulation and control instruction and a voice guide instruction are generated in combination with the escape path instruction, and intelligent early warning control over elevator fire is achieved. By utilizing the embodiment of the invention, the fire risk can be evaluated in real time, the escape path is optimized, the elevator emergency system is accurately regulated and controlled, and the safe evacuation efficiency in a fire scene is improved.

The utility model relates to the technical field of dust removal devices for roasting furnaces, and discloses a dust removal device for a carbon roasting furnace, which comprises a dust removal box, a water inlet pipe is arranged on the outer side wall of the dust removal box, a water inlet control valve is arranged on the water inlet pipe, and the water inlet pipe is positioned at the middle upper part of the dust removal box; a water outlet pipe is arranged at the lower end of the dust removal box, a water outlet control valve is arranged on the water outlet pipe, and the water outlet pipe is located in the center of the lower end of the dust removal box. The discharged smoke dust is conveyed into the dust removal box through the dispersing air outlet piece, so that the high-temperature discharged smoke dust is uniformly distributed in the dust removal box, and the high-temperature smoke dust dissolving device has the characteristics of high practicability and high dissolving efficiency.

The utility model provides a smoke gathering structure and a range hood, and relates to the technical field of kitchen appliances. The smoke gathering structure mainly comprises a smoke collecting hood, a smoke gathering plate and a driving assembly. A plurality of clamping structures are arranged in the exhaust fume collecting hood; the smoke gathering plate is arranged on one side of the smoke collecting hood and can rotate relative to the smoke collecting hood; the driving assembly comprises a driving motor and a transmission part which are connected. The transmission part is arranged in the exhaust fume collecting hood and is connected with the exhaust fume gathering plate; the driving motor drives the transmission part to move so as to drive the smoke gathering plate to rotate. According to the embodiment provided by the invention, in the stage that the driving motor drives the transmission part to move to drive the smoke gathering plate to rotate, after the transmission part moves to abut against any clamping structure, the driving motor stops and keeps the self-locking state, and the self-locking driving motor, the abutting clamping structure and the transmission part form enough support for the smoke gathering plate; when a user presses the function key, the smoke gathering plate is kept stable, and it is ensured that the user has good operation (touch) experience and visual experience during operation.

The utility model relates to the technical field of kitchen equipment, and discloses a range hood with a flow guide part, which comprises a smoke collecting cavity, an air bellow and the flow guide part, the air bellow comprises an air bellow body arranged at the top of the smoke collecting cavity and a fan arranged in the air bellow body, a main air inlet is formed at the rear end of the fan, and an auxiliary air inlet is formed at the front end of the fan. The draught fan is provided with an air outlet with an opening facing one side of the top of the air bellow body, the flow guide piece is located in the air bellow body and arranged at the corner, away from the air outlet, of the rear end of the main air inlet, the flow guide piece is provided with an air guide plate which forms an angle with the plane where the main air inlet is located, and a plurality of first silencing holes are formed in the air guide plate at intervals. According to the air bellow, the flow guide part is arranged in the air bellow body, so that oil smoke airflow can be guided to mainly enter the fan from the main air inlet of the fan, the oil smoke airflow flowing to the auxiliary air inlet is reduced, vortex airflow is pressed, the smoothness of the oil smoke airflow is improved, the air inlet effect and the air inlet efficiency are improved, and noise is reduced.

The utility model belongs to the technical field of electric appliances, and discloses a cleaning device and oil smoke pumping and discharging equipment. The cleaning device comprises a heating device, a nozzle, a driving pump, a water supply pipe, a liquid outlet pipe and a liquid inlet pipe; a steam outlet of the heating device is connected with the nozzle through a cleaning pipe, and the cleaning pipe is sequentially provided with a steam control valve, a driving pump and a cleaning control valve in the fluid flowing direction. The liquid outlet end of the water supply pipe is connected to the cleaning pipe and located between the driving pump and the steam control valve, and a water supply control valve is arranged on the water supply pipe; the liquid inlet end of the liquid outlet pipe is connected to the liquid inlet and outlet, the liquid outlet end is connected to the cleaning pipe and located between the driving pump and the steam control valve, and the liquid outlet pipe is provided with a liquid outlet control valve; the liquid inlet end of the liquid inlet pipe is connected to the cleaning pipe and located between the cleaning control valve and the driving pump, the liquid outlet end of the liquid inlet pipe is connected to the liquid inlet and outlet, and a liquid inlet control valve is arranged on the liquid inlet pipe. According to the cleaning device, the structural compactness of the cleaning device can be improved, and the occupied space of the cleaning device is reduced.

The invention relates to the technical field of boilers, in particular to a boiler container waste heat recovery device. The boiler container waste heat recovery device comprises a boiler assembly, a material raising and collecting assembly made of high-temperature-resistant materials, a waste heat recovery assembly and a plurality of cleaning and knocking assemblies, the boiler assembly comprises three L-shaped supporting rods, a boiler part, a smoke exhaust pipe and a collecting pipe, and the material raising and collecting assembly comprises a blocking part, a scraping part and a valve part. The waste heat recovery assembly comprises a conveying pipe and a water storage piece. The boiler part is used for heating water in the boiler part, the smoke exhaust pipe and the collecting pipe are used for exhausting smoke and impurities generated by fuel, the blocking part is used for filtering the smoke and the impurities generated by the fuel, the scraping part is used for scraping the impurities at the bottom of the blocking part and fixing fuel particles, and the waste heat recovery assembly can fully utilize heat exhausted by the boiler part, so that energy waste is reduced; and the multiple cleaning and knocking assemblies can sweep and knock the conveying pipe, so that the heat transmission efficiency is improved, and energy waste is reduced.

The invention relates to the technical field of waste heat recovery of calcining kilns, and particularly discloses a kiln head and smoke chamber waste heat recycling system of a calcining kiln, comprising: a first heat exchange assembly comprising a first jacket and a first power source, the first jacket is arranged on the outer side of the end part of the kiln head, and the first jacket is provided with a first inlet and a first outlet; the first power source is used for driving the heat transfer medium in the first jacket to flow, so that the heat transfer medium can flow into the first jacket from the first inlet and then flow out from the first outlet; the second heat exchange assembly comprises a second jacket and a second power source, the second jacket is arranged on the outer side of the chamber hopper, a second inlet and a second outlet are formed in the second jacket, and the second power source can enable the heat transfer medium to flow into the second jacket from the second inlet and then flow out from the second outlet. According to the application, the heat diffused to the outside air at the kiln head and the smoke chamber can be reduced, and the waste heat at the kiln head and the smoke chamber is recycled, so that the utilization rate of resources is improved.

The invention belongs to the technical field of kitchen appliances, and discloses a side suction type range hood. The side suction type range hood comprises a shell, a smoke collecting cavity is hidden in the shell, the smoke collecting cavity is connected with the shell through a second driving assembly, the second driving assembly drives the smoke collecting cavity to overturn relative to the shell and generates sliding displacement in the horizontal or inclined direction at the same time, and the second driving assembly comprises an overturning part and a guiding part; the overturning part drives the smoke collecting cavity to overturn, and the smoke collecting cavity is in sliding fit with the shell through the guide part. When the side suction type range hood provided by the invention is used, the smoke collecting cavity can be overturned outwards relative to the shell and slide in the horizontal or inclined direction at the same time through the overturning part and the guide part when being opened, so that the smoke collecting area extends forwards, the coverage range of the smoke collecting area is expanded, the smoke collecting efficiency is effectively improved, and the service life of the side suction type range hood is prolonged. The whole machine is compact and small in structure when not used, and space is saved.

The invention relates to the technical field of automobile manufacturing, in particular to a flame-retardant coating detection device and a flame-retardant coating detection method. The flame-retardant coating detection device comprises a baffle plate, a supporting plate, a cover plate and a supporting plate which are enclosed to form a closed test cavity. The baffle is provided with a first mounting hole for fixing a fire source, the supporting plate is provided with a corresponding second mounting hole for fixing a temperature detection piece, the cover plate is provided with an insertion hole for mounting a sample, and the supporting plate is provided with a smoke suction assembly. The device is simple in structure and convenient to operate, a fire source and a temperature measuring point can be effectively fixed, the testing efficiency and accuracy are improved, testing is conducted in a closed environment, the smoke suction function is integrated, safe and environment-friendly harmful smoke is guaranteed, the safety and health of operators are comprehensively guaranteed, and environmental pollution is avoided.

The application provides a smoke guide pipe and an extractor hood. The smoke guide pipe comprises a first pipe and a second pipe, the first pipe and the second pipe are connected oppositely to form an outer pipe wall surface and an inner smoke guide channel, and the outer pipe wall surface is provided with a first driving transmission mechanism capable of swinging the first pipe relative to the second pipe. The first driving transmission mechanism is arranged on the outer pipe wall surface, which can not only swing left and right according to the position and size of the oil smoke to capture the oil smoke, but also can reduce the influence of oil dirt on the first driving transmission mechanism, increase the service life, and facilitate the replacement operation of the first driving transmission mechanism.

The utility model discloses a bag-type dust collector with a cooling structure for waste gas treatment, which relates to the technical field of bag-type dust collectors and comprises a bag-type dust collector, a gas inlet of the bag-type dust collector is connected with a cooling box through a connecting pipeline, and the cooling box comprises a box body, a smoke inlet and a smoke outlet. The smoke inlet and the smoke outlet are fixed to the front end of the box body, the top of the smoke inlet is communicated with an inner cavity of the box body, the smoke outlet is connected with the connecting pipeline, a cooling assembly is arranged in the box body, and waste gas enters the box body through the smoke inlet and makes contact with the cooling assembly to achieve heat exchange and cooling. The cooling box and the cooling component are arranged, so that flue gas with overhigh temperature can be effectively prevented from directly entering the bag-type dust collector to damage a cloth bag in the bag-type dust collector, and the service life of the cloth bag of the bag-type dust collector 1 is further prolonged.