67results about How to "Improve smoke extraction efficiency" patented technology

The invention provides an oil smoke real-time concentration monitoring and intelligent adjusting method and system, and relates to the technical field of intelligent control, and the method comprises the steps: collecting real-time air quality data of a catering area through a plurality of environment sensors, including oil smoke concentration, PM2.5 concentration, carbon monoxide concentration, temperature and humidity; and the control center calculates an oil smoke concentration spatial and temporal distribution field based on real-time data in combination with spatial interpolation, considers smoke exhaust energy consumption, smoke exhaust efficiency and regional oil smoke concentration, and determines an optimal cooperative control strategy by utilizing a multi-target optimization algorithm, and the optimal cooperative control strategy comprises the fan rotating speed of each range hood, the smoke exhaust direction and the air supply parameters of the fresh air system. And the control center issues the control strategy to a range hood controller to adjust operating parameters of the range hood. Dynamic optimization control over the air quality of the catering area can be achieved, the oil smoke concentration is reduced, energy is saved, and the smoke exhaust efficiency is improved.

The invention relates to an exchange platform laser cutting device. The device comprises a rack, a climbing rail, a translation rail, a translation platform, a climbing platform, a driving mechanism, a three-dimensional moving mechanism and a laser cutting mechanism. The rack comprises a first area and a second area, a plurality of partition plates are arranged at the bottom of the rack corresponding to the first area to form a plurality of smoke exhaust sub-areas, a smoke exhaust port is formed in the rack corresponding to one side of each smoke exhaust sub-area, each smoke exhaust port is connected with a smoke exhaust pipe, a total air outlet is formed in the smoke exhaust pipe, and the total air outlet is communicated with the smoke exhaust sub-areas. An air door and an air door driving assembly used for driving the air door to be opened and closed are arranged at the smoke outlet. The running track of the climbing platform is that the climbing platform ascends and then descends, when the climbing platform and the translation platform are staggered, the climbing platform is located above the translation platform, the climbing platform does not occupy the bottom space of the rack, in this way, the bottom space of the first area of the rack can be released, and therefore a smoke exhaust mechanism can be arranged in the bottom space of the rack.

The present invention relates to the technical field of tunnel ventilation, and discloses a ventilation and smoke exhaust system and method for a long-distance underwater road-rail combined immersed tube tunnel. The system includes: a jet fan, a rail transit intermediate air shaft machine room, an intermediate air shaft mechanical fan, a rail transit fan room, a rail transit section mechanical fan, a highway tunnel exhaust and smoke exhaust fan, a highway tunnel fan room, a rail transit piston air shaft, a rail transit mechanical air shaft, a highway tunnel exhaust tower, a highway tunnel smoke exhaust duct, a highway tunnel special smoke exhaust port, a smoke exhaust control valve 1, a smoke exhaust control valve 2, an upward line intermediate air shaft mechanical air valve, a downward line intermediate air shaft mechanical air valve, a rail transit civil engineering air duct, and a rail transit section mechanical air valve. The present invention can take targeted smoke exhaust measures for fires occurring at different locations of a long-distance underwater road-rail combined immersed tube tunnel, ensure rapid exhaust of smoke, and reduce harm to passengers and rescue personnel.

The invention relates to the technical field of escape corridors, and discloses an escape corridor for high-rise fire evacuation and a use method of the escape corridor. A protective net; an escape hole; one end of the escape pipeline is connected with the escape hole, the other end of the escape pipeline extends into the building, and a fireproof door is arranged at the other end of the escape pipeline; a waterproof layer; the slide assembly is arranged in the escape corridor body in the vertical direction, an escape platform connected with the escape hole is arranged on the side, close to the building, of the slide assembly, and the slide assembly is used for evacuees to slide to the ground from the escape hole; an emergency lighting assembly; the smoke exhaust assembly is arranged in the escape pipeline; and the alarm device is arranged on the escape corridor body and used for giving an alarm when a fire disaster occurs. According to the method, the evacuation efficiency is improved, the operation cost is reduced, and an innovative solution is provided for safe fire evacuation of the high-rise building.

The application discloses a wind blade adjustable non-powered air cap and a flue gas waste heat recovery system constructed by the same. The non-powered air cap comprises an air cap body, a lifting mechanism and a pressure sensor. The air cap body comprises a cap top, a bottom ring and a group of wind blades closely arranged between the cap top and the bottom ring. The pressure sensor is arranged on the inner wall of the cap top. The upper end of the wind blade is located above the cap top, and the end slightly exceeds the outer edge of the cap top. The number of the lifting mechanism corresponds to the number of the wind blades, and the lifting mechanism is annularly distributed on the cap top and comprises a lifting plate. The two ends of the lifting plate are respectively provided with an electric push rod and a lifting shaft. The electric push rod is fixed to the inner wall of the cap top, and the lifting shaft is connected with the wind blade. The electric push rod and the pressure sensor are electrically connected with a control box. When the pressure sensor detects that the pressure in the air cap is too large, the lifting mechanism works, the height of the wind blade is lifted, the opening of the wind blade is increased, and thus the exhaust capacity of the air cap is increased and the exhaust efficiency is improved.

The utility model relates to the technical field of microwave vertical high-temperature furnaces, and discloses a microwave vertical high-temperature furnace with a smoke exhaust structure, which comprises a high-temperature furnace main body. According to the microwave vertical high-temperature furnace with the smoke exhaust structure, the sleeve is arranged outside the smoke exhaust pipe, the high-temperature-resistant centrifugal fan is arranged in the sleeve, smoke and waste gas generated in the furnace cavity can be actively and rapidly exhausted, and compared with a traditional top natural smoke exhaust mode, the smoke exhaust efficiency is effectively improved; the problems that the air pressure in the furnace is unstable and microwave elements are damaged due to waste gas retention are effectively avoided, meanwhile, the high-temperature-resistant ceramic coating and the spiral flow guide protrusions on the inner wall of the smoke exhaust pipe can resist high-temperature corrosion and guide airflow to flow smoothly, and the smoke exhaust efficiency is further improved; and the left clamping plate and the right clamping plate are pulled to be separated from the positioning circular ring, at the moment, the sleeve can be pulled to be detached from the smoke exhaust pipe, the high-temperature-resistant centrifugal fan can be conveniently overhauled, and the practicability of the device is improved.

The present invention relates to an integrated stove with a cooking device, comprising a cooking device with a cooking cavity and a stove, the stove comprising a stove shell, the stove being arranged above the cooking device, and an exhaust layer having an exhaust inner cavity therein is arranged between the stove and the cooking device, a side exhaust port communicating with the exhaust inner cavity is provided on the side of the exhaust layer, and a gas inlet communicating with the exhaust inner cavity is also provided on the exhaust layer, and a first gas outlet is provided on the cooking cavity, and the first gas outlet is fluidically connected with the gas inlet. Compared with the prior art, the present invention can realize the emission of smoke in the cooking cavity from bottom to top and from the side, which not only avoids the interference of smoke in the cooking cavity on users and the influence on cabinets, but also improves smoke exhaust efficiency.

The present invention relates to the technical field of civil engineering, and discloses a ventilation and smoke exhaust system and method for a long-distance underwater road-rail combined shield tunnel, including: a jet fan, a rail transit intermediate air shaft machine room, an intermediate air shaft mechanical fan, a rail transit fan room, a rail transit interval mechanical fan, a highway tunnel exhaust and smoke exhaust fan, a highway tunnel fan room, a highway tunnel centralized exhaust / smoke exhaust valve, a highway tunnel smoke exhaust control valve, a rail transit piston air shaft, a rail transit mechanical air shaft, a highway tunnel exhaust tower, a rail transit smoke exhaust duct, a highway tunnel smoke exhaust duct, a highway tunnel dedicated smoke exhaust port, a highway tunnel centralized smoke exhaust valve, an upward line intermediate air shaft mechanical air valve, a downward line intermediate air shaft mechanical air valve, a rail transit smoke exhaust duct, a highway tunnel exhaust duct and a rail transit interval mechanical air valve. The present invention can take targeted smoke exhaust measures for fires occurring at different positions in a long-distance underwater road-rail combined shield tunnel, and ensure the rapid discharge of smoke.

The invention relates to the technical field of induction cooker and smoke stove all-in-one machines, and discloses an induction cooker and smoke stove all-in-one machine with a heat dissipation structure, a top air duct shell is arranged at the upper part of the rear end of an exhaust box body, a bracket is arranged at the top of the front end of the exhaust box body, and a bottom shell is fixed between the top air duct shell and the upper end of the bracket; the fan assembly is used for discharging hot air in the heat dissipation air duct of the induction cooker through the top air duct shell and the main air duct, meanwhile, the fan assembly is used for introducing smoke into the top air duct shell, and the smoke is discharged through the main air duct after being filtered by the filter assembly; a jacking mechanism is further arranged at the bottom of the top air duct shell and used for jacking the filtering assembly out of a smoke stove panel at the upper end of the bottom shell, and the filtering assembly is disassembled. A heat dissipation channel and a smoke exhaust channel are communicated, so that the heat dissipation efficiency and the smoke exhaust efficiency can be effectively improved; a filter screen of the filter assembly is used for filtering particulate matters in the oil smoke, so that the service life of the fan assembly is prolonged.

The utility model discloses a high-temperature smoke exhaust retaining fan device for fire fighting, which relates to the technical field of fire fighting equipment and comprises a support seat, a cooling mechanism and a smoke suction mechanism, a smoke exhaust pipe is fixedly connected onto the support seat in a penetrating manner, and a smoke exhaust fan is fixedly mounted at one end of the smoke exhaust pipe. The cooling mechanism comprises a water storage tank fixedly connected to the outer wall of the top of the supporting base, a snakelike heat conduction copper pipe arranged in the water storage tank, a refrigerator, a temperature sensor, a stirring assembly and a controller fixedly installed on the outer wall of the front side of the water storage tank, wherein the refrigerator and the temperature sensor are sequentially and fixedly installed on the inner wall of one side of the water storage tank. According to the smoke exhaust device, high-temperature smoke can be fully cooled in the smoke exhaust process, adverse effects of high-temperature factors on the performance of the fan are avoided, and the smoke exhaust efficiency can be guaranteed; and the smoke exhaust fan is provided with the retention filtering assembly, so that the smoke exhaust fan has an effective retention function, harmful substances in smoke can be effectively intercepted, and the situation of secondary pollution is avoided.

The utility model relates to the technical field of electric kilns, in particular to an electric kiln with an annular flue, which comprises a kiln body and a first filter bin, a second filter bin is fixedly mounted on the surface of the upper end of the first filter bin, an inner shell is fixedly mounted in the kiln body, and a kiln door is connected to the position, close to the surface of the front end, in the kiln body through a hinge. A plurality of electric heating wires are installed at the bottom end in the kiln body, a placing plate is fixedly connected to the position, close to the bottom, of the inner wall of the kiln body, the multiple smoke suction heads are arranged and distributed in the kiln body, smoke distributed on the upper portion, the lower portion and the middle portion in the kiln body can be rapidly and comprehensively sucked and exhausted, and the smoke exhaust efficiency is improved; by arranging the spraying mechanism, the spraying range of the flue gas is expanded, the flue gas in the second filtering bin can be uniformly sprayed, the filtering effect and efficiency are improved, sprayed water can be recycled, and water resources are saved.

The invention relates to the technical field of tunnel ventilation, and discloses a ventilation and smoke exhaust system and method for a long-distance underwater public rail combined immersed tube method tunnel. The system comprises a jet fan, a rail transit middle air shaft machine room, a middle air shaft mechanical fan, a rail transit fan room, a rail transit interval mechanical fan, a highway tunnel exhaust and smoke exhaust fan, a highway tunnel fan room, a rail transit piston air shaft, a rail transit mechanical air shaft, a highway tunnel exhaust tower and a highway tunnel smoke exhaust duct. The system comprises a smoke exhaust port special for a highway tunnel, a smoke exhaust control valve I, a smoke exhaust control valve II, an uplink middle air shaft mechanical air valve, a downlink middle air shaft mechanical air valve, a rail transit civil engineering air duct and a rail transit interval mechanical air valve. Targeted smoke exhaust measures can be taken aiming at fire disasters occurring at different positions of the long-distance underwater highway-rail combined immersed tube method tunnel, rapid exhaust of smoke is ensured, and harm to passengers and rescue workers is reduced.

The utility model relates to the technical field of beveling equipment, in particular to a beveling cutting smoke exhaust system and a beveling cutting robot, a smoke suction pipeline is divided into at least one smoke suction area, and a partition opening and closing mechanism is arranged on the smoke suction area, so that cutting smoke in different areas can be exhausted. And meanwhile, a water curtain treatment mechanism is additionally arranged to absorb and precipitate smoke dust generated by cutting, so that the smoke dust exhaust efficiency is improved, the smoke exhaust energy consumption is reduced, and the influence of the smoke dust on the cutting environment and the health of workers is reduced.

A central flue system of a building includes range hoods installed on different floors, the air outlet of each range hood is connected to a common flue through its own smoke pipe, an air outlet channel vertically connected to the outlet of the common flue is installed on the roof, and the characteristics are: the diameter of the air outlet channel is larger than the diameter of the common flue, at least two independently working flue fans are installed in the air outlet channel, and the flue fans are arranged near the inner wall of the air outlet channel and avoid the airflow discharged from the common flue outlet. The advantages of the present invention are: the outdoor smoke exhaust power of the central flue system of the building adopts a combination of multiple fans, the flue fans are arranged near the inner wall of the air outlet channel and avoid the airflow discharged from the common flue outlet, the arrangement of the fans is more reasonable and scientific, and can be suitable for various complex installation environments, the system has a small smoke exhaust resistance, the system has a higher smoke exhaust efficiency and energy saving, the system has a higher reliability, and the fan has a longer life.

The utility model provides a smoke exhaust device for a smoke-proof corridor, which relates to the field of fire fighting equipment and comprises a smoke exhaust pipeline, a ventilation mechanism is fixedly arranged in the smoke exhaust pipeline, an exhaust mechanism is arranged at the output end of the ventilation mechanism, and the outer surface of the exhaust mechanism is fixedly connected with the inner surface of the smoke exhaust pipeline. Dense smoke in a corridor is sucked into the smoke exhaust pipeline, the dense smoke is conveyed into the air inlet of the conical frame through the output end of the ventilation mechanism and conveyed to the air outlet of the conical frame, and when the dense smoke flows to the air outlet through the air inlet, the flowing space of the dense smoke is gradually reduced, so that the collision frequency among dense smoke molecules is increased; the flowing speed of dense smoke is gradually increased, the speed of the dense smoke flowing into the connecting assembly through the air outlet is increased, the speed of the dense smoke discharged out of the smoke exhaust pipeline through the connecting assembly is increased, the flowing speed of the dense smoke in the smoke exhaust pipeline is increased through the structure, and the smoke exhaust efficiency of the smoke exhaust device is improved to a certain degree.

The utility model relates to the field of integrated cookers, and discloses an integrated cooker exhaust device which comprises an integrated cooker, and an exhaust mechanism is fixedly connected to the rear side of the top of the integrated cooker. The exhaust mechanism comprises a back plate and a top plate, the back plate is vertically and fixedly connected to the rear side of the top of the integrated cooker, the top plate is vertically and fixedly connected to the top of the front side wall of the back plate, the front side wall of the back plate and the bottom of the top plate are each provided with two mounting grooves, centrifugal fans are mounted in the mounting grooves, and round hole net plates are fixedly connected to the front side wall of the back plate and the bottom of the top plate. The circular hole net plate covers the back plate and the top plate, communicating air channels are formed in the back plate and the top plate, and the two ends of each communicating air channel communicate with the two corresponding adjacent mounting grooves.

The present invention discloses a mechanical ventilation pipe with adjustable pipe opening direction and a method for using the same, comprising jet fans (27) installed at intervals in a tunnel, a longitudinal steel air duct (1) installed along the tunnel direction at the top of the tunnel, ventilation pipes connected at intervals in the longitudinal steel air duct (1) near the jet fans (27) area, and an adjustment device on the ventilation pipe that can achieve one or a combination of connection, disconnection, displacement and movement with the air outlet of the jet fans (27). The present invention makes full use of the spare space of the tunnel arch and, based on the existing fans in the tunnel, adjusts the mechanical ventilation pipe to connect with the tunnel fans, ingeniously changes the flow path of the wind flow, and transforms the longitudinal ventilation of the jet fans in the normal operation state into semi-transverse ventilation in the case of tunnel fire, which can greatly improve the smoke exhaust efficiency of the tunnel without increasing the operation cost too much, thereby improving the escape probability of trapped personnel.

The utility model discloses an exhaust device of a range hood. The exhaust device comprises an exhaust fume collecting hood, an air inlet duct and an exhaust duct, a purification box is fixedly connected to the front side of the exhaust fume collecting hood, a filter screen is inserted into the purification box, sliding blocks are fixedly connected to the two sides of the filter screen, a handle is fixedly connected to the top of the filter screen, a guide plate is fixedly connected to the interior of the exhaust fume collecting hood, an air inlet duct is fixedly connected to the tail of the exhaust fume collecting hood, the air inlet duct is a gradually-shrinking air duct and gradually shrinks from an opening of the exhaust fume collecting hood, and a fan is fixedly connected to the tail end of the air inlet duct. The top of the draught fan is fixedly connected with a power source, the top of the power source is fixedly connected with a supporting rod, the top of the supporting rod is fixedly connected with a solar panel, and the exhaust duct is fixedly connected to the other end of the draught fan. The rotating speed of the draught fan can be automatically adjusted according to the oil smoke concentration, the smoke exhaust efficiency is improved, and the air flow resistance and the air noise are reduced through the gradually-shrinking and gradually-expanding design of the air inlet duct and the air exhaust duct.

The utility model relates to moxa -burning box technical field discloses a moxa -burning box smoke discharging device for traditional chinese medical nursing, including slide rail and skid assembly, the skid assembly horizontal sliding on the slide rail still include smoke pipe adapter box, transition box, smoke exhaust hood, longitudinal smoke exhaust pipe, transverse smoke exhaust pipe and straight pipe, smoke pipe adapter box is connected with transverse smoke exhaust pipe, the bottom of transverse smoke exhaust pipe smoke pipe adapter box is connected with longitudinal smoke exhaust pipe, longitudinal smoke exhaust pipe is connected with transition box, the bottom of transition box is fixedly connected with straight pipe, straight pipe is integrally connected with smoke exhaust hood, the lifting ring is connected with mountain climbing buckle, and mountain climbing buckle hangs in the below of skid assembly, and skid assembly moves horizontally along the slide rail, and skid assembly drives the bottom smoke exhaust hood and sends into different area. The utility model can move the smoke exhaust hood to the specific area that needs to exhaust smoke, and the smoke is collected accurately, and then is discharged through longitudinal and transverse smoke exhaust pipe, effectively avoids the smoke diffusion in the room, improves the exhaust efficiency and effect.

The invention discloses an energy-saving charcoal fire barbecue oven with a multi-section temperature control function. Comprising a barbecue oven; the barbecue oven is composed of an oven body and a smoke extraction mechanism, the bottom end of the oven body is installed at the bottom end of the support, a containing plate is installed at the position, located at the bottom end of the oven body, of the upper end of the support, an air inlet is formed in the front end of the oven body, an air inlet adjusting mechanism is installed at the position, corresponding to the air inlet, of the upper side of the oven body, and a collecting mechanism is slidably installed below the rear end of the oven body. A grating is installed in the middle of the interior of the oven body, a plurality of carbon boxes are arranged side by side at the upper end of the grating in the oven body, and barbecue grids are arranged at the upper end of the oven body corresponding to the upper ends of the carbon boxes. According to the multi-carbon-box design, charcoal fire segmented control is achieved, the carbon boxes can be flexibly started according to the number of food materials and barbecue requirements, charcoal fire waste is reduced, and the energy-saving effect is achieved; the air inlet adjusting mechanism accurately controls air, so that sufficient combustion of charcoal fire and stable fire behavior are guaranteed; the smoke extraction mechanism is high in smoke extraction efficiency, and the barbecue environment is improved; the collecting mechanism is convenient to clean, and use experience is improved.

The invention relates to an underwater tunnel transverse smoke exhaust adjusting device and method for intervening the smoke flow state, the device comprises two passing lanes arranged in an underwater tunnel, an emergency evacuation corridor and a smoke exhaust pipeline, one side of each passing lane is provided with a plurality of smoke exhaust ports communicated with the smoke exhaust pipeline, and the interiors of the smoke exhaust ports are connected with smoke exhaust adjusting assemblies through fastening connecting assemblies; a short blade valve plate driven by a driving motor I is rotationally arranged in a mounting frame I in the smoke exhaust adjusting assembly, a long blade valve plate driven by a driving motor II is rotationally arranged in a mounting frame II, and the short blade valve plate is perpendicular to the long blade valve plate; cooperative adjustment of a smoke layer downward inclination angle controlled by a long-blade valve plate and a smoke steering angle controlled by a short-blade valve plate intervenes in smoke flow power behavior; according to the tunnel transverse smoke exhaust adjusting device, through the limiting conditions of the downward inclination angle and the steering angle, based on the relation between pressure and speed distribution and smoke amount distribution, the resistance coefficient and the like, the opening degrees of long and short valve plates in all smoke exhaust ports are obtained, dynamic regulation and control are achieved, and the smoke exhaust effect is improved.

The utility model relates to fire engineering equipment technical field especially, and more particularly to a fire engineering smoke exhaust device, technical scheme: a fire engineering smoke exhaust device, including smoke exhaust device support bottom plate, adjusting assembly, smoke suction subassembly, connecting pipe, processing box, fixed base, activated carbon filter plate, air deflector, flow guide groove, second mounting support, flow guide air baffle, installation groove and collection box, the top surface of smoke exhaust device support bottom plate is provided with adjusting assembly, the top of adjusting assembly is provided with smoke suction subassembly, one side of smoke suction subassembly is provided with connecting pipe, one side of connecting pipe is provided with processing box, the utility model discloses through multilayer filtration and spiral flow guide technology has improved the thoroughness of smoke purification significantly, ensures that the discharge gas meets environmental protection standard, secondly, the combination of flow guide air baffle and spiral air duct optimizes the airflow path, reduces energy loss, makes the smoke exhaust process more efficient, effectively improves the purification effect and smoke exhaust efficiency of fire engineering smoke exhaust.

The invention discloses an air volume control method and device for a building smoke exhaust system and electronic equipment. The method comprises the steps that an exhaust air volume prediction model of each floor is established based on smoke exhaust data of each floor in the building smoke exhaust system; the exhaust air rate initial value and the exhaust air rate optimization range of each floor in the building smoke exhaust system are determined according to the range hood on-off states and the range hood performance parameters of all the floors in the building smoke exhaust system; according to the on-off state of the range hood, the exhaust air rate initial value, the exhaust air rate optimization range and the exhaust air rate prediction model, the exhaust air rate of each floor is iteratively updated, so that the target exhaust air rate of each floor is obtained; and air volume adjustment is conducted on the range hood of the corresponding floor according to the target exhaust air volume. The exhaust air rate is initialized by combining the on-off state of the range hood of each floor, and the exhaust air rate of the corresponding floor is iteratively calculated by constructing the exhaust air rate prediction model of each floor, so that reasonable distribution of the exhaust air rate of the range hood of each floor under different working conditions is ensured, the floor smoke exhaust efficiency is improved, and the energy consumption is reduced.

The utility model discloses an oval daylighting roof smoke exhaust device, and relates to the technical field of building daylighting roof structures, the oval daylighting roof smoke exhaust device comprises a daylighting roof body, the side, away from the ground, of the daylighting roof body is fixedly connected with a mounting column, and the mounting column is arranged perpendicular to the ground; the smoke exhaust assembly is slidably connected with the mounting column in the length direction of the mounting column, the smoke exhaust assembly is provided with a smoke exhaust port, the smoke exhaust port can be opened and closed, and indoor dense smoke can be exhausted in time when the smoke exhaust port is opened; and the cleaning part is arranged on the mounting column, and the cleaning part is used for cleaning the smoke discharging assembly after smoke discharging. By the adoption of the technical scheme, dense smoke can be conveniently discharged when a fire disaster occurs, and meanwhile the smoke discharging assembly can be cleaned through the cleaning part.

The utility model relates to the technical field of oven, put forward a kind of domestic oil fume prevention oven, it include: barbecue oven and collection top, the collection top is located barbecue oven top, the side of barbecue oven is provided with front plate, the below of barbecue oven is provided with rotating sleeve, and the barbecue oven is rotatably connected with front plate by rotating sleeve;The below of collection top is provided with rear plate, the outer wall of rear plate is provided with hinge, and the rear plate is connected with collection top by hinge.The setting of collection top can collect smoke in time when barbecue oven is used, avoid smoke tank around diffusion, and completely cover the top of barbecue oven, make the collection of smoke more efficient, and the setting of rotating sleeve and hinge can fold equipment, so that the space occupied by equipment is smaller when storing, the chimney is added, so that smoke can be quickly discharged, improve the efficiency of smoke exhaust, and the setting of anti-infiltration top effectively avoids smoke backflow.

The utility model discloses an aluminum profile quenching device which comprises a quenching pool, a suction mechanism and a quenching mechanism, a smoke outlet is formed in the side wall of the quenching pool, the suction mechanism comprises a suction fan communicated with the smoke outlet and a collecting bin communicated with the suction fan, the suction fan is electrically connected with a controller, and the collecting bin is electrically connected with the controller. The quenching mechanism comprises an air cylinder and a clamping assembly arranged at the telescopic end of the air cylinder, and the air cylinder is communicated with an air pump electrically connected with the controller through a hose. Smoke is sucked into the collecting bin through the suction fan, smoke generated during quenching of the aluminum profile can be quickly sucked into the smoke outlet, the aluminum profile is exposed, and therefore the aluminum profile can be quickly quenched. The state of the aluminum profile is convenient to observe.

The utility model discloses a kind of graphitization furnace subsection type uniform smoke exhaust device, including the smoke exhaust hood consisting of framework and cover plate, the end of smoke exhaust hood is equipped with end sealing plate, and is divided into left segment smoke exhaust hood and right segment smoke exhaust hood independent of each other;Every segment smoke exhaust hood middle part is equipped with independent smoke exhaust main pipe, smoke exhaust main pipe is communicated with two segment smoke exhaust pipes symmetrical left and right, multiple equidistantly arranged wedge-shaped slit mouths are set in the bottom of smoke exhaust pipe, and the slit height gradually increases from the end close to smoke exhaust main pipe to the direction away from it. Significantly improve the far end negative pressure uniformity of super-long graphitization furnace;Smoke exhaust main pipe is connected with underground flue through reducing pipe and forms no connecting piece snap structure, realizes the quick hoisting and sealing of smoke exhaust hood. The utility model solves the problem of smoke emission and poor airflow organization in the prior art, ensures uniform smoke exhaust of graphitization furnace, improves smoke exhaust efficiency, and protects production environment and safety.

The utility model relates to the technical field of building fire protection and smoke exhaust, in particular to an automatic smoke exhaust device for building fire protection engineering, which comprises a smoke exhaust pipeline and a smoke exhaust fan, and the smoke exhaust fan is mounted in the smoke exhaust pipeline. When the filter plate filters dense smoke, a hydraulic air cylinder is started and drives a connecting block to move downwards, a fixing frame and the connecting block are fixed through cooperation of a bolt and a nut, and a compression spring provides reverse acting force so that the right end face of a brush assembly can be continuously attached to the left end face of the filter plate; the connecting block drives the fixing frame and the brush assembly to integrally move downwards, so that the brush assembly effectively removes particulate matter accumulated on the filter plate and keeps the filter plate in a dredging state, dense smoke can be continuously discharged in time, the overall smoke discharging efficiency is improved, and meanwhile fire fighting work can be smoothly carried out.

The utility model relates to the technical field of gas water heaters, in particular to a vehicle-mounted water heater with an anti-downdraft smoke guiding device, which comprises a shell, the shell comprises a smoke outlet and a smoke inlet, a smoke guiding cavity is arranged on the shell, the smoke inlet is communicated with the smoke outlet, a smoke guiding mechanism and a wind blocking mechanism are arranged on the smoke guiding cavity, and the wind blocking mechanism is arranged on the smoke guiding cavity. The air blocking mechanism is used for blocking external air blown into the smoke guide cavity through the smoke exhaust port, so that the external air flows back to the smoke exhaust port through the air blocking mechanism to be exhausted. According to the vehicle-mounted water heater, by arranging the wind shielding mechanism, when external wind enters the smoke guide cavity, the wind shielding mechanism blocks the path of the external wind entering the smoke inlet, so that the external wind cannot drive smoke to flow back to the smoke inlet, and the problems that smoke in an existing vehicle-mounted water heater is exhausted out of the external environment through a smoke exhaust channel, but in windy weather, the smoke cannot flow back to the smoke inlet are effectively solved. And air enters the smoke exhaust channel from the outside, so that smoke flows back to the smoke inlet under the action of the external air, and normal work of the vehicle-mounted water heater is affected.

This utility model provides a check valve installation mechanism and a flue sealing mechanism, belonging to the field of flue sealing, to solve the problem of oil fumes seeping into the user's room through gaps such as the valve body edge and the connection with the wall; it includes a first fixing member with a square first receiving groove; a first elastic sealing member disposed in the first receiving groove; a second fixing member with a through hole, the side wall of the through hole being bent towards the wall to form a square limiting part, which is used to insert into the first receiving groove; and a second elastic sealing member disposed on the side wall of the second fixing member facing the wall, for abutting against the wall; through the action of the first elastic sealing member and the second elastic sealing member, gaps between the second fixing member and the wall caused by protrusions or grooves on the installation wall, as well as gaps at the connection between the first fixing member and the second fixing member caused by protrusions or grooves, can be effectively avoided, ensuring that a seal can be achieved.