881results about How to "Good dust removal" patented technology

The invention provides a dust removal method and device applied to an air conditioner outdoor heat exchanger. An outdoor unit of an air conditioner comprises the outdoor heat exchanger and an air duct system composed of a motor and vanes. The dust removal method includes the following steps that whether dust removal processing needs to be carried out on the outdoor heat exchanger is judged; when it is judged that the outdoor heat exchanger needs dust removal processing, at least the motor is controlled to rotate reversely, and when the outdoor unit works normally, the motor rotates forwards. By means of the technical scheme, the effect that the air conditioner automatically carries out dust removal on the outdoor heat exchanger is realized, a higher heat exchange efficiency of a condenser is guaranteed, and the complex operation of detaching the outdoor unit when the condenser is cleaned manually is avoided.

The invention relates to a residual heat boiler of a steel ball dedusting type ore heat furnace. The residual heat boiler at least comprises a boiler heated surface, a seal boiler flue gas passage, a furnace top and a furnace bottom ash hopper, wherein the boiler heated surface comprises coil pipe groups; and the seal boiler flue gas passage is formed at the periphery of the boiler heated surface. The residual heat boiler is characterized in that the furnace top is provided with a steel ball spreading device, a steel ball separating and collecting device is arranged under the furnace bottom ash hopper; a circulating type steel ball mechanical transporting device is arranged between the steel ball spreading device and the steel ball separating and collecting device; the circulating type steel ball mechanical transporting device comprises at least one drive wheel, at least three driven wheels, a double-row chain, a horizontal guide rail, a steel ball transporting hopper and a mechanical discharge blocking wheel; the at least one drive wheel and the at least three driven wheels are fixed on a boiler frame, and the steel ball transporting hopper is hung on the double-row chain surrounded between the drive wheels and the driven wheels; and the furnace top is provided with the mechanical discharge blocking wheel capable of turning over the steel ball transporting hopper. The invention has simple mechanism, recycled steel ball, mechanical automation running, low investment and running cost and favorable dedusting effect, and the like, can effectively remove and collect accumulated ash and sticking dust on the residual heat boiler heated surface of the ore heat furnace and greatly develops the energy-conservation and emission-reduction technology of the ore heat furnace smelting industry.

The invention relates to a mobile dust removal and harm reduction device suitable for tunnel construction and a dust removal and harm reduction method. The device includes a walking device and a waterspraying system, a dust suction system, a water solution harm reduction treatment system and an electronic control system which are arranged on the walking device, the water spraying system, the dustsuction system and the walking device are in long-distance connection with a controller in the hand of an operator, and the controller includes a remote control device and a display device. Accordingto the technical scheme of the device, the mode that the water spraying system and the dust suction system are combined is adopted to remove dust in a tunnel, and by adding the water solution harm reduction treatment system, pollutants and poisonous and harmful gases collected by the dust suction system are filtered to discharge a clean gas. The whole device is simple in structure, the dust removal and harm reduction efficiency is high, rapid dust removal and harm reduction of the tunnel face can be ensured, and meanwhile, and it is avoided that the body health is affected since the operatoris in close contact with the dust.

The invention provides an optimized process scheme and equipment aiming at the problems existing in the recovery technology of the conventional converter gas dry method. In the process scheme and the equipment, physical sensible heat between 800-1,000 DEG C and 200 DEG C of converter gas is recovered by using a high-efficient heat pipe exhaust-heat boiler, and hidden danger of system explosion is eliminated by using a spark arrestor at the same time. A nitrogen pulse bag-type dust collector replaces an electrostatic dust collector, so that the equipment has the advantages of simple structure, low fault rate and high dust collection efficiency. Compared with the recovery technology of the conventional converter gas dry method, the process scheme and equipment have obvious improvements on benefits, which are shown as reduction in dust emission load, reduction in energy and water consumption, increase in steam recovery, small equipment investment, safe and reliable process and the like.

The invention discloses a laser cutting machine which can improve the dust removing effect effectively through an additionally-arranged air blowing system, and provides the laser cutting machine capable of removing the dust effectively. The laser cutting machine capable of removing the dust effectively comprises a working table, a supporting frame, a laser cutting head and a control device. The control device is connected with the laser cutting head, a conveying belt is arranged on the working table, a motor I is arranged below the working table and connected with the conveying belt, an air intake device and a dust and fume collection device connected with the air intake device are arranged at one end of the supporting frame, and an air blowing device is arranged at the other end of the supporting frame. Through matching of the air blowing device and the air intake device, airflow can be formed in the direction of the conveying belt, and the excellent dust removing effect can be achieved at low power.

A cyclone dust collector of a vacuum cleaner includes a lower cyclone body for initially separating dust entrained in air drawn in through an air suction port, an upper cyclone body for separating fine dust entrained in the air that has been initially filtered in the lower cyclone body, and a central air path for guiding the air which is filtered in the upper cyclone body along a center axis line, and discharging the air through an air discharge port in the lower cyclone body. The capability of the vacuum cleaner can be improved by circulating the drawn in air having the entrained dust in the lower and upper cyclone bodies, and separately and sequentially collecting the dust at least partially based on the particle size thereof.

The invention discloses a street lamp pole type water mist dust fall device for controlling PM 2.5 air quality from exceeding standard, and belongs to the technical field of dust fall equipment. The street lamp pole type water mist dust fall device has the technical key point of comprising a pole and tower pedestal, wherein an electrical control device and a water tank are arranged on the side edge of the pole and tower pedestal; the pole and tower pedestal is provided with a supporting pole; the top of the supporting pole is provided with a supporting platform; the supporting platform is provided with a water mist dust fall spray mechanism and a PM 2.5 monitoring device; the water mist dust fall spray mechanism is connected with the water tank through a pipeline; the pipeline is provided with a booster pump; and the electrical control device is in circuit connection with the water mist dust fall spray mechanism, the PM 2.5 monitoring device and the booster pump respectively. The invention aims to provide the street lamp pole type water mist dust fall device for improving PM 2.5 air quality from exceeding standard, which has the advantages of compact structure, convenience for use and good dust fall effect; and the street lamp pole type water mist dust fall device is mainly used for control and improvement of PM 2.5 air quality of urban roads.

The invention discloses a belt fall point dust removal system which is used by a bulk material in the belt transportation process. The belt fall point dust removal system comprises a handpiece sealing hood (1), a material runner (2) and a sealing hood (3) on the lower part of an engine body, wherein the discharge hole of the handpiece sealing hood (1) is connected with the feed port of the material runner (2); the discharge hole of the material runner (2) is connected with the feed port of the sealing hood (3) on the lower part of an engine body; the top of the sealing hood (3) on the lower part of an engine body is provided with a first dust remover (4); the top of the handpiece sealing hood (1) is provided with a second dust remover (5); a dust gas backflow channel (7) is fixedly arranged between the sealing hood (3) on the lower part of an engine body and the material runner (2); and the port of the dust gas backflow channel (7) is respectively communicated with the material runner (2) and the cavity of the sealing hood (3) on the lower part of an engine body. The invention saves the existing water resource, has ideal dust removal effect, is convenient to install and maintain and does not generate secondary pollution.

The invention relates to an environmental-friendly device of an iron and steel enterprise and a dust removal method, that is to say, a system and a method for treating converter flue gas. The system comprises a furnace mouth nitrogen injection sealing petticoat pipe, a segmental evaporation cooling flue, a high-temperature heat pipe steam generator, a spray evaporation cooler, a long neck adjustable throat venturi tube, an impeller type composite dehydrator, a fan, an automatic continuous coal gas detector and a three-way switching valve, which are connected in sequence, wherein the three-way switching valve is connected with a gas chamber; or the three-way switching valve is communicated with a chimney. The method comprises the following steps of: forming a soft sealing screen between a furnace mouth and a petticoat pipe, after segmentally vaporizing and cooling the flue gas, and cooling in a high-temperature heat pipe; after carrying out spray evaporation, cooling and rough dust removal through a dry method, carrying out fine dust removal and cooling by a venturi tube through a wet method, dehydrating the flue gas, and entering into a coal gas recycling stage lastly. According to the invention, the wet method and the dry method are combined, waste heat recovery, coal gas recovery, sewage treatment and dust removal can be planned in a flue gas treatment and utilization system as a whole and the combination action of the device is fully exerted.

The dust separation apparatus includes a dust intake unit including a blower, an inertial separation unit, a centrifugal separation unit, and a filtering separation unit. The dust intake unit, the inertial separation unit, the centrifugal separation unit, and the filtering separation unit are sequentially connected in series and together form a horizontal structure. The inertial separation unit and the centrifugal separation unit are connected in a horizontal-axis direction to form an inertial and centrifugal separation unit. A dust collection box is provided below and connected to the inertial and centrifugal separation unit. The filtering separation unit includes a dust collection barrel. The intelligent control system includes the dust separation apparatus and an intelligent control unit.

A pile fabric comprises a base fabric and a pile layer composed of many cut piles extending from at least one face of the base fabric, and has a pile length of from 2 to 30 mm. The pile yarns forming the cut piles are core-sheath type composite yarns each comprising a core portion composed of thick fibers (preferably filaments) having a single fiber size of from 5 to 55 dtex and a sheath portion that is composed of thin fibers (preferably filaments) having a single fiber size of from 0.01 to 2.5 dtex, and that surrounds and covers the core portion. The pile fabric is excellent in the dust removal effect during wiping, and resistance to laying flat, and is useful as a fabric for cleaning.

The invention relates electric furnace converting steel-making process technology that contains 80-90% molten iron, waste steel, pig iron and other cold burden 10-20%. The temperature of the molten iron in electric furnace is controlled to the range of 1550-1580 degree centigrade. The invention supplies a method of using molten iron to take the place of waste steel. Thus, it has great economic benefits, reduces the smoke and improves the operation environment.

The invention relates to a novel computer dust removing device. The novel computer dust removing device comprises a support and a machine case. An air extraction opening and an air extractor are arranged on the right side wall of the machine case. Ventilation holes are evenly formed in the left side wall of the machine case. An upper supporting plate is connected to the top of the left side wall of the machine case, and a lower supporting plate is connected to the bottom of the left side wall of the machine case. An upper groove is formed in the right end of the bottom of the upper supporting plate, and a lower groove is formed in the right end of the top of the lower supporting plate. A dust filtering frame is arranged on the left of the machine case and internally further provided with a dust filtering net. A motor is further arranged on the upper supporting plate. The bottom end of an output shaft of the motor is connected with a screw. The bottom end of the screw is rotationally connected with the lower supporting plate through a bearing. The screw is further sleeved with a lifting block in threaded fit with the screw. A supporting rod is connected to the right end of the lifting block. The right end of the supporting rod is connected with a brush rod. The brush rod is closely attached to the left side of the dust filtering net. Meanwhile, brush bristles are further evenly distributed on the brush rod. By the adoption of the above structure, the novel computer dust removing device can conveniently and rapidly conduct the dust removing operation, and therefore the dust removing efficiency and the dust removing effect are greatly improved.

The invention belongs to the field of dust removal equipment, and in particular relates to a hydraulic dust removal device, including an induced draft fan and a hydraulic dust removal box, a vertical separator is arranged inside the hydraulic dust removal box, a first-stage filter net is arranged on the middle and upper part of the vertical separator, the vertical separator divides the hydraulic dust removal box into two chambers of a dust removal chamber and a water drainage chamber, the induced draft fan is connected with the dust removal chamber by a fan duct, the fan duct is provided with an air inlet valve, the upper end of the dust removal chamber is provided with a sprinkler system, a water inlet of the sprinkler system is connected with a water supply pipe, the water supply pipe is provided with a water inlet valve, a second-stage precision filter net is laterally arranged in the water drainage chamber, the position of the second-stage precision filter net is lower than the lower edge of the first-stage filter net, the upper part of the water drainage chamber is provided with a venthole in communication with the outside, the lower part of the water drainage chamber is provided with a water drain port, the position of the water drain port is lower than the second-stage precision filter net, the water drain port is provided with a water drain valve, the outer walls of the dust removal chamber and the water drainage chamber are respectively provided a manhole I and a manhole II, and the position of the manhole II is higher than the second-stage precision filter net. The dust removal efficiency of the hydraulic dust removal device is up to 80% to 95%, the dust removal effect is obvious, and the working environment is optimized.

The invention discloses a self-cleaning type road sign for a building site. The self-cleaning type road sign for the building site comprises an upright post and a sign body fixedly connected to the side wall of the upright post through a fixing plate, wherein a device cavity is formed in the side wall of the upright post, an impeller is rotatably connected to the side wall of the upper end of theupright post through a rotating shaft, and the rotating shaft penetrates into the device cavity and is fixedly connected with a permanent magnet. According to the self-cleaning type road sign for thebuilding site, the impeller, the permanent magnet, a stretchable air bag, an air outlet mechanism, a spiral coil and indicator lamp strips are arranged, so that the automatic cleaning and dust removalof the surface of the sign can be realized, and a driver can know the road conditions clearly. Meanwhile, the potential safety hazard of manual cleaning is avoided, the cleaning efficiency is improved, and the labor intensity is reduced. The indicator lamp strips can emit light to enhance the warning effect of the road sign, and the driver can be better helped to know the instruction content andcan also be attracted to actively watch the sign to know the road conditions.

The invention relates to a wet-type vibrating-wire bipolar electrostatic coagulation deduster. The deduster comprises a shell, wherein one end of the shell is communicated with an air inlet pipe, the other end of the shell is communicated with an air outlet pipe, bottom of the shell is provided with a slurry bucket; bottom of the slurry bucket is provided with a slurry discharging port, the slurry bucket is connected with a sedimentation tank through an overflow pipe; the sedimentation tank is provided with a water pump which is connected with an atomizing nozzle through a circulating fluid pipe network; and the atomizing nozzle is arranged in the shell and on an air inlet channel of the air inlet pipe. The shell is further provided with a monolayer vibrating-wire grid and a multilayer vibrating-wire grid cooperating with each other and located between the atomizing nozzle and the air outlet pipe, wherein the monolayer vibrating-wire grid and the multilayer vibrating-wire grid are respectively connected with two electrodes of a DC high voltage power supply. The deduster has advantages of simple structure, low resistance, low energy consumption and large treatment amount for flue gas per unit area.

The invention discloses a PLC-controlled spray dust removal and haze removal vehicle with a vector nozzle, which comprises a six-wheeled vehicle chassis, a front vector cyclone sprayer, a first worm wheel, a first worm, a first plunger hydraulic motor and the like. The front vector cyclone sprayer is fixedly installed on the upper part of the first worm wheel through a bracket. The first worm gear rotates vertically and is installed on the boss on the lifting platform. The first worm is installed on the support of the lifting platform for lateral rotation, and cooperates with the first worm wheel. The invention can achieve large power transmission in a small space, so that the high-speed fan can easily reach a very high speed and is stable and noiseless. By setting the vector nozzle, the front vector cyclone sprayer and the rear vector cyclone sprayer can be sprayed The direction and angle can be adjusted more precisely, so as to achieve better dust removal effect.

The invention discloses a closed pulse dust collector and a dust collection method thereof. The closed pulse dust collector comprises a dust collector housing (3), wherein dust collection filter elements (2) are arranged in the dust collector housing (3). The closed pulse dust collector is characterized in that a sealed chamber cover (6) is arranged at the tops of the dust collection filter elements (2); the dust collection filter elements (2) are connected with the sealed chamber cover (6); an air outlet (7) is formed at the top of the sealed chamber cover (6); a valve plate (12) controlling the opening and closing of the air outlet (7) is arranged at the air outlet (7); and an air ejection pipe (14) connected with a pulse pneumatic valve (13) is arranged at the side part of the sealed chamber cover (6). According to the invention, the air outlet is closed automatically under the control of a power supply control box; an opposite sealed chamber is formed by the sealed chamber cover and the dust collector filter elements; air ejected by the air ejection pipe forms a pressure air mass to act on the dust collection filter elements, so that a dust collection effect is improved by above 20% compared with the prior art.

The invention relates to the technical field of textile, and discloses a cleaning device for cleaning and dedusting of a textile. The cleaning device for cleaning and dedusting of the textile includesa shell body, wherein a fixed seat is fixedly connected with the back face of the inner wall of the shell body, and a driving motor is fixedly connected with the one side, far away from the back faceof the inner wall of the shell body, of the fixed seat. An output shaft of the driving motor is fixedly connected with a rotating shaft, and the surface of the rotating shaft is sleeved with a rotating roller. A limited groove is formed in the surface of the rotating roller, and the inner wall of the limited groove is twisted with textile cloth. A transmission rod, located on the upper portion ofthe fixed seat, is fixedly connected with the back face of the inner wall of the shell body. The surface of the transmission rod is sleeved with a transmission roller. The surface of the transmissionroller is movably connected with the textile cloth. The cleaning device for cleaning and dedusting of the textile is simple in structure and convenient to use, so that the cleaning of the textile cloth is cleaner, the effect of dedusting is better, the waste collection is more convenient after dedusting, the operation of a device is smoother, and the produced cloth quality is higher.

The invention relates to a dust remover, in particular to a deep bending roll dust remover characterized by comprising a first connecting rod bracket, a first connecting rod, a blowing-absorbing dustremover, a second connecting rod and a third connecting rod. The left end of the first connecting rod is articulated with the first connecting rod bracket which is fixed on a supporting frame of a deep bending roll device; the right end of the first connecting rod is articulated with the upper part of the blowing-absorbing dust remover; the left end of the second connecting rod is articulated withthe right part of a deep bending roll swinging frame of the deep bending roll device; the right end of the second connecting rod is articulated with the middle of the blowing-absorbing dust remover;the left end of the third connecting rod is articulated with the right part of the deep bending roll swinging frame of the deep bending roll device; and the right end of the third connecting rod is articulated with the lower part of the blowing-absorbing dust remover comprising a dust-blowing device and a dust-absorbing device which are fixed. The deep bending roll dust remover is not driven by asingle driving mechanism, keeps a certain distance between a dust-absorbing hole and the surface of a strip steel with a variable inclined angle and adopts a blowing-absorbing dust-removing technologyto further thoroughly clean the surface oxide scale of the strip steel.

The invention discloses energy-saving and environment-friendly dedusting and ventilating equipment. The energy-saving and environment-friendly dedusting and ventilating equipment comprises a tank installed on an outdoor wall; an air inlet is formed in the side wall of one side of the tank; a fixed barrel is fixed to the side, close to the air inlet, of the interior of the tank; ventilation ports are formed in two sides of the fixed barrel; washing tanks are fixed to the two sides of the fixed barrel, communicate with the interior of the fixed barrel and are fixed to the inner wall of the sides, away from each other, of the tank; a first motor is fixed to the center of the inner bottom wall of the fixed barrel; an output shaft of the first motor is connected with a vertical rotary rod; theother end of the rotary rod is rotationally connected with the inner top wall of the fixed barrel; and four horizontal connection rods distributed in an array mode are fixed to the side wall of the rotary rod. The energy-saving and environment-friendly dedusting and ventilating equipment is simple in structure, reasonable in design, ingenious in conception and good in dedusting effect, a filter net can be replaced and cleaned without halt, convenience is high, the indoor temperature can be effectively reduced, the indoor humidity is improved, comfort level is increased, and the energy-saving and environment-friendly dedusting and ventilating equipment is suitable for being popularized.

The invention belongs to the field of sponge cities, and in particular to a road safety isolation fence for sponge city construction. The isolation fence comprises a guardrail frame vertically fixed on the ground, a handrail horizontally extending along the road is arranged above the handrail frame; a water storage tank is arranged in the railing frame; an L-shaped water inlet pipe extending to the bottom of the railing frame is arranged at the bottom of the water storage tank; a one-way valve is arranged in the L-shaped water inlet pipe, a movable rod extending in the axis direction of the water storage tank is arranged in the water storage tank, the lower end of the movable rod extends into the handrail frame and is in sliding connection with the handrail frame, and the upper end of themovable rod extends out of the water storage tank and is fixedly connected with a horizontally-arranged wing plate. The movable rods can be driven by the wing plates to move upwards, a driver can judge the approximate vehicle speed at the moment by observing the colors on the tubular reflecting plates, guarantee is provided for road safety, rainwater can be sucked into the water storage tank to bestored in a rainy day environment, and the concept of sponge city construction is met.

The invention discloses a preparation method of a denitration demercuration integral filter material. The preparation method comprises the following steps: dipping a pretreated metal fiber felt into ametal salt precursor solution, and growing the multifunctional integral filter material with the denitration and demercuration catalysis function and the dust removal function on the surface of the metal fiber felt in situ through the processes of hydrothermal treatment, high-temperature calcination and the like. The denitration demercuration and dust removal multifunctional composite filter material disclosed by the invention not only can avoid the adverse effect of fly ash particles on the catalyst, fine dust can be effectively reduced, and the catalyst is firmly combined with the filter material, the inherent performance of the filter material is not influenced, and the method is particularly suitable for industrial production.

The invention provides a dust control unit applicable to mine powder governing, which comprises a spring, a first magnet, a second magnet, a square plate, a pull rope, an elastic rope and a scraper blade; the right end of the spring is fixed at upside of the left end face of an ash filter screen, and the left end of the spring is mounted at the upside of the right end face of the moving rod; the first magnet is installed at upside of the left end face of the moving rod, and the second magnet is installed at the lower end of the driving shaft through the connecting rod. The design realizes thepurpose of automatic cleaning; the square plate is assembled in the square opening, and the scraper plate is assembled in a dust collecting box; the front end of the elastic rope is installed at the back end face of the scraper plate, and the back end of the elastic rope is installed at the back end face at inner part of the dust collecting box; the front end of the pull rope is fixed at the backend face of the square plate, and the back end of the pull rope is installed at the front end face of the scraper plate. The design realizes the purpose of scrapping dust conveniently; the dust control unit is convenient to manage, good in dust removing effect, good in stability, and high in reliability.

The invention discloses a multistage dust removing environment-friendly device for flue gas. A metal mesh disc can intercept large-particle dust in the flue gas to the upper part of the metal mesh disc; the metal mesh disc is driven to rotate when a motor starts, and the large-particle dust on the metal mesh disc rotates to a left side along with the metal mesh disc; the dust on the metal mesh disc enters a dust removing pipe and finally enters a storage cylinder because of a scraping effect of an arc-shaped scraping plate on the dust on the metal mesh disc; the storage cylinder is in screwedconnection with the dust removing pipe, so that the detaching and the cleaning of the storage cylinder are facilitated; filtered gas overflows through gas outlets in a conical cover; part particle dust and harmful substances in the overflowed gas are adsorbed by water; the gas enters above a water surface and is in further contact with a water curtain because of the effect of a spraying device, sothat the adsorption effect is improved; because of the effects of a ceramic mesh hole plate and wet sponge, the adsorption effect to the gas is further enhanced, and the dust removing effect on the flue gas is obvious.

A magnetic disk cartridge, which holds therein a magnetic disk with recording density and has a liner composed of polyethylene terephthalate fibers, is provided which achieves a good dust-removal effect by the liner without flawing the magnetic disk and without increasing the rotary torque of the magnetic disk. A magnetic layer of the magnetic disk is formed such that the magnetic layer contains diamond particles which have an average particle size satisfying a relationship “b−0.05≦a≦b+0.1” at 1% to 10% by weight with respect to the ferromagnetic material, where “a” represents the average particle size of the diamond particles in units of μm and “b” represents a thickness of the magnetic layer in units of μm. The fibers of the liner are selected from the fibers whose fiber diameter varies in its length direction.

The invention discloses a static electricity dust removal device for a printing machine. The static electricity dust removal device comprises a printing machine paper outlet box. A dust cover is arranged on the printing machine paper outlet box. The printing machine paper outlet box is internally provided with symmetrically-distributed static electricity removal rods and symmetrically-distributed dust sticking rubber rollers. The side wall of the printing machine paper outlet box communicates with a loudspeaker, a sound energy converter and a frequency converter. The sound energy converter communicates with an air inlet pipe. The other side of the printing machine paper outlet box communicates with an air suction pipe. A dust absorption box is connected to the air suction pipe and internally provided with a multilayer filtering net and a dust collecting layer. A compressor is connected to the dust absorption box and connected with the air inlet pipe. According to the provided static electricity dust removal device for the printing machine, the defects existing in printing machine dust removal devices in the prior art are overcome; the dust removal mode that a sound wave is combined with dust sticking is adopted, so that water washing or manual dust sticking is avoided; operation is easy; the time and effort are saved; the dust removal effect is good; and meanwhile, filtering and dust absorption are conducted on dust removal air, so that the circular cleaning process of the air is achieved.

A dedusting system for an LED light bar comprises an airflow generation device. When the LED light bar passes by the dedusting system, the airflow generation device generates air flow to take away dust attached on the LED light bar. The machine provided with the dedusting system for the LED light bar comprises an operation area and a transmission device, wherein the transmission device passes by the operation area, the LED light bar is placed on the transmission device, the operation area comprises a heating area, a high-temperature area and a cooling area, and the dedusting system is located in the heating area. According to the dedusting system, the airflow generation device generates the air flow which can act on the dust attached onto the LED light bar and remove the dust. Therefore, the dedusting device provided by the invention can realize a better dedusting effect.