64results about How to "Improve vacuuming effect" patented technology

The invention discloses a dust removal device for fireproof thermal insulation building material production, and belongs to the technical field of building material production, the dust removal device comprises a fixed seat with an inner cavity, a filter plate is mounted at the top end of the fixed seat, a fixed plate is connected to the upper end of the fixed seat, and a dust collection box is mounted on the side wall of one side of the fixed plate; a plurality of through holes are evenly formed in the bottom end of the dust collection box at equal intervals, a dust discharging pipe is installed at the top end of the dust collection box, a motor is installed in the dust collection box and located at the dust discharging pipe, the output end of the motor is connected with a rotating shaft through a coupler, and the other end of the rotating shaft is connected with fan blades. The defects in the prior art are overcome, external dust can be automatically absorbed and treated through mutual cooperation of the fixing base, the filter plate, the fixing plate, the dust collection box, the motor, the rotating shaft, the fan blades, the blades, the cleaning rod and other structures, meanwhile, the through holes can be cleaned, the dust is prevented from blocking the through holes, and the dust collection effect is prevented from being affected, and therefore the dust collection effect is improved. And the applicability of the device is improved.

The utility model discloses an axial dust collection integrated motorized spindle which comprises a motorized spindle body, the motorized spindle body is provided with a dust collection structure, a fan structure and an automatic tool changing structure, the fan structure comprises a brushless motor and a centrifugal blade assembly, the brushless motor drives the centrifugal blade assembly to rotate to form airflow, and wood chips and dust are sucked and discharged from the dust collection structure; the automatic tool changing structure comprises a lifting air cylinder, the dust collection structure comprises a dust collection cover, and the lifting air cylinder drives the dust collection cover to move axially when the motorized spindle changes tools. The motorized spindle integrates dust collection, cooling and automatic tool changing functions, and the problems that in the prior art, the dust collection effect is poor, energy consumption is high, the occupied space is large, and cost is high are solved.

The present invention relates to the field of resource recycling and environmental protection production, and specifically to a dust removal device used in the process of recycling waste circuit boards, comprising an artificial processing frame, a dust collector is arranged on one side of the artificial processing frame, and a dust suction pipe is plugged and connected to the output end of the dust collector. The present invention can flexibly adjust the opening size of the dust cover according to waste circuit boards of different sizes by setting a first adjustment component, and can ensure that the dust cover can completely cover the surface of the waste circuit board as much as possible regardless of whether it is a larger or smaller size of the waste circuit board, thereby improving the adaptability of the dust removal device and meeting the dust removal requirements of circuit boards of various sizes in the process of recycling waste circuit boards. The present invention can realize the synchronous relative movement of two sliders by setting a driving component, and ensure that the expansion or contraction of the left and right sides of the dustproof elastic cloth is uniform, so that the opening size of the dust cover can be adjusted more accurately and quickly, thereby improving the convenience and efficiency of adjustment.

The utility model relates to the technical field of welding dust removal, in particular to an automobile part welding dust removal device which comprises a base, a body and a fixing assembly, the body is installed on the base, the fixing assembly comprises a supporting cylinder, an adjusting rod, a threaded rod, a limiting ring, an abutting plate, a buffering cushion and a limiting component, and the supporting cylinder is fixedly installed on the side, close to the body, of the base; the adjusting rod is slidably mounted on the side, close to the base, of the supporting cylinder, the threaded rod is rotationally connected with the supporting cylinder, located on the side, away from the adjusting rod, of the supporting cylinder and connected with the adjusting rod, the limiting ring is fixedly connected with the threaded rod and located on the side, away from the adjusting rod, of the threaded rod, and the abutting plate is fixedly connected with the adjusting rod. The adjusting rod is fixedly connected with the supporting cylinder and located on the side, away from the supporting cylinder, of the adjusting rod, the buffering pad is fixedly connected with the abutting plate and located on the side, away from the adjusting rod, of the abutting plate, the limiting component is installed on the supporting cylinder and drives the limiting ring to rotate, the device is prevented from moving in the using process, and the stability of the device is improved.

Automatic cleaning equipment comprises a first rolling brush (100), and the first rolling brush (100) comprises a first brush piece (132); the second rolling brush (200) and the first rolling brush (100) are roughly arranged side by side, and the second rolling brush (200) comprises a second brush piece (232); when the first rolling brush (100) and the second rolling brush (200) rotate, at least part of the outer contour formed by the outer end track of the first brush piece (132) and at least part of the outer contour formed by the outer end track of the second brush piece (232) interfere with each other.

The utility model discloses a kind of for wind power blade polishing device, it is related to polishing device technical field.The utility model includes placing table, and the placing table provides stable support base for integral equipment, further include polishing mechanism, and the polishing mechanism is set on placing table top.The utility model is through setting dust collection component, specifically in the process of rotating shaft rotation will be through driving gear to drive several driven gears to rotate together, in the process of several driven gears rotation will be through several impellers rotation to produce powerful airflow to make dust hood inside present negative pressure state, at this time dust generated in the process of polishing disc polishing is inhaled into dust hood inside, reduce dust height dispersion, and diffuse in the whole working environment, to reduce the influence to operator's vision, reduce working difficulty and risk, also reduce dust to spread to surrounding environment, reduce the influence to surrounding environment.

The application provides a cover structure of a composite material heat curing device, which comprises a side wall, an upper cover arranged at the top of the side wall, a first rubber plate arranged at the bottom of the side wall, and a closed cavity formed by the upper cover, the side wall and the first rubber plate. A plurality of shunt pipes are arranged in the cavity and connected with air outlets of a hot air machine. The shunt pipes are provided with a plurality of air outlets in communication with the cavity. An air outlet pipe is in communication with the cavity at one end and with the outside at the other end. The cover structure cooperates with a box body of the heat curing device to play the roles of heating and pressing the preform as a negative mold. Compared with the forming mode of rigid negative mold and positive mold cooperation or the mode of vacuum bag film pressing, the cover structure uses a flexible rubber plate as the negative mold, the rubber plate is better in the effect of sticking to the mold after being heated and expanded to press the preform, the preform is more uniform in stress during the curing process, and the internal quality of the product is better. The rubber plate is more versatile in pressing, and the same rubber plate is applicable to the forming of products of different sizes without the need of manufacturing negative molds of different sizes.

The utility model discloses plastic floor site maintenance equipment, and relates to the field of maintenance equipment. The floor rubber site maintenance equipment comprises an equipment base, a dust collection equipment body is arranged on the equipment base, a connecting pipe is arranged on the dust collection equipment body, a suction nozzle is arranged on the connecting pipe, and a roller brush mechanism is arranged on the equipment base. According to the floor rubber site maintenance equipment, the equipment base is used for bearing the dust collection equipment body, meanwhile, the roller brush mechanism is additionally arranged on the equipment base, and through the design of the roller brush mechanism, the driving unit can be used for driving the continuously rotating cleaning roller brush to clean the ground while dust collection is conducted; and therefore, foreign matters adhered to the floor rubber field are tilted and sucked into the dust collection equipment main body, the dust collection effect of the dust collection equipment main body on the ground is good, and the maintenance effect of the maintenance equipment is good.

The application discloses a dust removal device for electrical engineering and automation. The device comprises a dust suction box and a dust suction component, which are communicated through a dust suction pipe; the dust suction component comprises a shell, a center pipe is arranged in the shell, a second fan driven by a second motor and a center gear are arranged in the center pipe, the center gear is drivingly connected with a reciprocating screw rod through a transmission gear and a transmission component, a reciprocating block is engaged on the reciprocating screw rod, and the reciprocating block is connected with a sponge pad through a connecting rod. The dust suction effect is enhanced through the double-fan structure, the sponge pad is driven to reciprocate through the reciprocating screw rod mechanism, the sponge pad is deformed regularly in the wiping process through cooperation of the elastic arc-shaped plate and the inclined moving groove, effective removal of the adhesive dirt and self-cleaning of the sponge pad are realized; meanwhile, the device can be selected to open or close the wiping function, and can be selected to wipe in a dry or wet manner, so that the cleaning effect and applicability of the dust removal device are remarkably improved.

The utility model relates to an inorganic composite insulation board reciprocating cleaning device which comprises a conveying belt, two oppositely-arranged fixing plates are arranged on the two sides of the conveying belt respectively, and a lead screw which is driven by a lead screw motor and connected with a lead screw sliding block is arranged between the two fixing plates on one side of the conveying belt. A guide sliding rod connected with a guide sliding block is fixedly arranged between the two fixing plates on the side, away from the lead screw, of the conveying belt, a support is fixedly connected between the lead screw sliding block and the guide sliding block, the lower portion of the support is connected with a sweeping component, and the upper portion of the support is connected with a dust collecting component for collecting chippings swept by the sweeping component. The dust collection component comprises an exhaust pipe connected with an external exhaust fan and a dust suction pipe located on the upper portion of the support and provided with a plurality of dust suction openings, and the dust suction openings collect chippings swept by the sweeping component. According to the roller brush, rolling sweeping and reciprocating sweeping can be carried out, the cleaning capacity is high, stubborn chippings can be cleaned, the chippings and dust swept on the two sides of the roller brush can be sucked away in time, and the sweeping and dust suction effects are improved.

The utility model relates to PCB board dividing machine technical field discloses a dust extraction of PCB board dividing machine, including machine body and work board, the inner wall fixed connection of machine body has the motor, the inner wall fixed connection of machine body has the support seat, the output of motor penetrates the inside of support seat and is fixed with round plate, the outer wall fixed connection of round plate has transmission rod, the outer wall sliding connection of transmission rod has the cleaning frame, the inside sliding connection of cleaning frame has the fixing frame, the outer wall fixed connection of fixing frame is in the inner wall of machine body, the lower surface fixed connection of cleaning frame has the brush, in the utility model, through the cooperation between motor, support seat, round plate, transmission rod, cleaning frame, fixing frame and brush, the edge of machine body interior is reciprocating cleaning, avoids the influence dust extraction effect because of dust and chippings and is accumulated in the edge, also reduces the abrasion and corrosion of dust or chippings to machine body internal component.

This invention discloses an integrated vacuum system, characterized by: a housing, a first vacuum pump and a second vacuum pump disposed within the housing; the top of the second vacuum pump is connected to the bottom of the first vacuum pump via a mounting plate; a crossbeam is provided on each side of the housing, and the two sides of the first vacuum pump are connected to the crossbeams via support feet; a connection port is provided on the mounting plate, and the air inlet at the top of the second vacuum pump is connected to the air outlet at the bottom of the first vacuum pump via the connection port. This invention improves the convenience of installation and debugging, and also improves the vacuum effect.

The invention discloses a vacuum glass vacuumizing production line and a vacuumizing process, and belongs to the technical field of vacuum glass processing. The vacuum glass vacuumizing production line comprises a transfer system, a conveying system and a heating furnace system, and further comprises a vacuumizing mechanism, the vacuumizing mechanism comprises an opening extracting assembly, a supporting assembly and a glass pressing assembly, and an opening extracting inner cavity which drives the glass pressing assembly to press glass and has pressure is formed in the opening extracting assembly; the transfer system comprises a vacuum chuck mechanism and a transfer mechanism, and the vacuum chuck mechanism is provided with a three-axis driving device and a vacuum chuck; the conveying system comprises a vacuum vehicle, the vacuum vehicle is provided with a product carrier, and the vacuum vehicle drives the vacuum glass to be machined at different machining stations on the production line. The transfer system, the conveying system, the heating furnace system and the vacuumizing mechanism are sequentially arranged in the machining direction of the vacuum glass production line, all the mechanisms are matched with one another, efficient and automatic production of the vacuum glass vacuumizing process is achieved, and the product quality and consistency are improved.

The invention discloses an arbitrarily-turning door-free unloading material distribution vehicle with a dust removal track, which comprises a material distribution bin, a material distribution cylinder is rotatably arranged in the material distribution bin, a shaft rod on the material distribution cylinder is connected with a first motor, the material distribution bin is respectively provided with a material inlet and a material outlet, a material distribution port matched with the material inlet and the material outlet is arranged in the material distribution cylinder, and the material distribution cylinder is connected with the first motor. A first blanking groove is fixed to the position, below the distributing opening, of the distributing cylinder, blanking plates are arranged on the two sides of the first blanking groove, a second blanking groove is formed between the upper end face of each blanking plate and the distributing cylinder, a third blanking groove is formed between the lower end face of each blanking plate and the bottom of the distributing cylinder, and the first blanking groove is located at the upper end of the distributing cylinder. The second blanking groove is located below the first blanking groove, the third blanking groove is located at the lower end of the second blanking groove, a dust suction opening is formed in the material distribution bin, and a second channel is arranged between the material distribution bin and the material distribution cylinder. Compared with the prior art, the dust collection effect is good, and the environment-friendly production requirement is met; and secondly, the first motor can rotate the material distribution cylinder with a small torque.

The utility model relates to the technical field of asphalt pavement repair, and discloses a crack sealing machine for asphalt pavement repair, which comprises a carrier, the top of the carrier is fixedly provided with a stock bin for storing materials, and the top of the carrier is also fixedly provided with a dust collection box for collecting dust; the air nozzle assembly comprises a main dust collection cover, a lining and an air guide cover, the main dust collection cover is movably arranged on one side of the carrier and can ascend and descend, the lining is elastically connected with the main dust collection cover, the position is adjusted through ascending and descending of the main dust collection cover, and the lining elastically connected with the main dust collection cover can abut against the ground; a relatively sealed environment is formed at the crack position of the asphalt pavement to guarantee negative pressure, particles and dust in the crack are cleaned by cooperating with a dust collection box to exhaust air in the main dust collection cover, a hollow rubber ring is arranged to increase the deformable amplitude of the bottom of a lining, and a spring is matched to push the lining to move downwards to abut against the ground. The bottom of the lining can make full contact with the ground to guarantee sealing performance, and the dust collection effect is improved.

The utility model relates to a welding roll-over stand which comprises a supporting table, the upper end face of the supporting table is fixedly connected with a welding frame, and a dust removal mechanism is arranged in the welding frame. The dust removal mechanism comprises a hollow box, a moving assembly is arranged above the hollow box, the back face of the hollow box is fixedly connected with a communicating cylinder communicating with the interior of the hollow box, the interior of the communicating cylinder is fixedly connected with an air draft fan, and the air outlet end of the air draft fan is provided with a protective net fixedly connected with the interior of the communicating cylinder. A cleaning opening is formed in the back face of the hollow box, and the inner wall of the cleaning opening is sleeved with a sealing plug plate. The welding roll-over stand disclosed by the utility model can be used for treating welding smoke dust rising at a welding part during pipeline welding, so that a large amount of welding smoke dust is prevented from being directly diffused into a working environment without being treated to cause harm to the body of a worker, and the welding roll-over stand is relatively practical.

The application discloses a kind of full-automatic water-cooled plate polishing laser marking device's use method, belong to water-cooled plate processing technical field.A kind of full-automatic water-cooled plate polishing laser marking device, including plane polishing equipment, ash removal equipment and automatic marking equipment, plane polishing equipment, ash removal equipment and automatic marking equipment are sequentially connected, and ash removal equipment is set after plane polishing equipment.The application solves the problem that existing light polishing jig cannot realize the polishing of different water-cooled plates, the application sets up continuous plane polishing equipment and automatic marking equipment station, completes the plane polishing and marking of water-cooled plate, removes dust through ash removal equipment, and has high degree of automation, reaches front blocking mechanism through water-cooled plate, jacking roller descends, water-cooled plate is placed on support platform, side push assembly pushes water-cooled plate to side blocking mechanism, then rotary clamping cylinder presses water-cooled plate, and positioning is accurate.

The utility model belongs to the field of clamp equipment, and particularly relates to a suction nozzle position adjustable vacuum chuck which comprises a chuck body. The suction cup body comprises a base and a plurality of suction nozzles. The base is provided with a vacuum cavity; the plurality of suction nozzles are connected with the base, and each suction nozzle is provided with a first air groove communicated with the vacuum cavity; the bottom surface of the base is communicated with a plurality of connecting channels towards the vacuum cavity; the connecting ends of the suction nozzles are detachably connected with the connecting channels in a one-to-one correspondence mode. The bottom of the base is rotationally connected with a nozzle sealing cover beside each connecting channel; the nozzle sealing cover can be matched and inserted with the connecting channel through rotation so as to seal the connecting channel, or is not inserted with the connecting channel so as to expose the connecting channel; during adsorption, part of the suction nozzles can be detached according to the shape and the size of a workpiece, then the nozzle sealing covers are used for sealing the corresponding connecting channels, the remaining suction nozzles are used for adsorbing the workpiece in a targeted mode, the adsorption range of the suction cup body is flexibly adjusted, and the adsorption requirements of products of different specifications are met.

The utility model provides a kind of Roots vacuum pump and screw vacuum pump series system, including Roots vacuum pump, screw vacuum pump, condenser, first motor, second motor, water storage tank, electric cabinet, first electric control switch valve, second electric control switch valve, third electric control switch valve, electric control three-way valve, liquid level transmitter, pressure transmitter, first check valve and relevant pipeline;First motor is connected with Roots vacuum pump shaft, and second motor is connected with screw vacuum pump shaft;Liquid level transmitter is arranged at the side of water storage tank;Electric cabinet is respectively connected with first motor, second motor, first electric control switch valve, second electric control switch valve, third electric control switch valve, electric control three-way valve, liquid level transmitter, pressure transmitter communication connection.By using Roots vacuum pump and screw vacuum pump in series, the utility model not only can improve the vacuum degree of system and the stability of work and the efficiency of system vacuum extraction, but also can ensure normal work of work object while reducing system energy consumption.

The utility model relates to the field of looms, in particular to a loom convenient for adjusting weaving breadth. Comprising a workbench, supporting columns connected to the four corners of the lower end of the workbench, a mounting disc connected to the lower ends of the supporting columns, a breadth adjusting assembly, a comprehensive dust collection assembly and a loom body which are sequentially connected to the upper end of the workbench from front to back, and a protective cover connected to the upper end of the loom body. By using the breadth adjusting assembly, the breadth can be conveniently adjusted according to use requirements, so that the use range of the loom is widened; and through the use of the comprehensive dust collection assembly, dust collection treatment on the upper position and the lower position of flying catkins and dust generated in the weaving process is facilitated, the dust collection effect is improved, and the influence of air on the health of workers in the weaving process is reduced.

The utility model discloses an engineering precision polisher for delicate construction, and belongs to the technical field of building polishing, the engineering precision polisher for delicate construction comprises a polisher, the top surface of the polisher is fixedly connected with an air pump, the output end of the polisher is fixedly connected with a connector, one side of the connector is provided with a polishing disc, and the other side of the connector is provided with a polishing head. A pair of connecting mechanisms is arranged at the position, close to the outer side, of the rear end of the grinding disc, two supporting plates are fixedly connected to the outer side of a connector, a movable ring is arranged in the middle of the opposite faces of the two supporting plates, and dust suction pipes are fixedly connected to the two sides of the movable ring. And meanwhile, the dust collection assembly synchronously rotates along with rotation of the grinding assembly, the dust collection range is expanded, the dust collection effect is improved, fixing and dismounting of the dust collection assembly and the grinding assembly are facilitated through the connecting assembly, and use of the dust collection assembly is facilitated.

The utility model belongs to silica gel label production technical field, concretely speaking is a kind of silica gel label production defoaming device, including bottom plate, the water tank is fixedly connected in the bottom plate top, the water tank inside is equipped with a plurality of electric heating tube, the water tank side wall is connected with drain pipe, the valve is installed on the drain pipe, the water tank inside is placed with storage barrel, the hydraulic cylinder is installed in the bottom plate top, the hydraulic cylinder top is fixedly connected with fixed plate, the vacuum pump is installed in the fixed plate top, the storage barrel top is connected with bucket cover, the fixed block is installed on the bucket cover, by the above structure, set up water tank and storage barrel and bucket cover, use vacuum pump to generate vacuum effect, can heat the water in water tank by electric heating tube, to make hot water to the silica gel in storage barrel heat softening reduce its viscosity, can make the bubble in silica gel more easily rise to upper layer break, to improve the vacuum defoaming effect of silica gel raw materials.

The utility model discloses a spindle dust hood mechanism for a numerical control machine tool, which comprises a dust collection box connected with a machine tool spindle, the upper end of the dust collection box is provided with at least one group of dust collection pipe connectors, and the bottom of the dust collection box is provided with a spindle dust hood sleeved on the outer side of a cutter. The main shaft dust collection cover is detachably arranged on the dust collection box through a pneumatic quick change device, and the main shaft dust collection cover is communicated with the dust collection box; the clamping device further comprises a clamping jaw module, and the main shaft dust suction hood can be clamped through the clamping jaw module. Dust is absorbed in the machining process, the dust is prevented from permeating into the machine, the service life of the machine is prolonged, and meanwhile the air quality is improved; and secondly, the corresponding main shaft dust collection covers are matched according to the cutters with different lengths, and the dust collection effect is improved.

This invention provides a stainless steel composite plate and its preparation method, belonging to the field of metallurgical process technology. The stainless steel composite plate includes a substrate and a composite material, which are stacked. A plurality of air guide grooves are provided on the side of the substrate facing the composite material. These air guide grooves are areas on the substrate for bonding with the composite material and extend along the length of the substrate. The air guide grooves converge at one end, and a vertical hole is provided on the substrate at the converging end of the air guide grooves, communicating with the air guide grooves through the vertical hole. A horizontal hole is provided on the end face of the substrate, communicating with the vertical hole, and the exposed end of the horizontal hole is adapted to communicate with a vacuum extraction device. By providing air guide grooves on the bonding surface of the substrate for bonding with the composite material, the stainless steel composite plate of this invention can improve the vacuum extraction effect and ensure the vacuum degree between the two plates during vacuum extraction.

The utility model relates to the technical field of bar polishing related equipment, one embodiment of the utility model provides a dust removal device of a polishing machine for bar machining, the dust removal device comprises a frame body, a polishing machine mounting table and a driving lead screw, the driving lead screw is mounted in the frame body, and the polishing machine mounting table is slidably connected in the surface of the frame body; the polishing machine mounting table is connected with the driving lead screw in a threaded fit mode, the transmission groove is formed in the surface of the frame body, the supporting moving assembly is arranged on the transmission groove and the frame body, the dust cleaning assembly is arranged on the frame body and comprises a dust collector, the dust collector is installed at the bottom of the frame body, and an extension pipeline is arranged at the output end of the dust collector. Dust collection covers are arranged at the two ends of the surface of the dust collection box and communicate with the dust collection box, and dust collection holes are formed in the periphery of the inner surface of each dust collection cover. By means of the technical scheme, the technical problems that in the prior art, dust flies onto other devices, abrasion of the devices is accelerated, the precision of the devices is reduced, and the service life of the devices is prolonged are solved.

The utility model relates to a trimming device for edge sealing of a hinge pore plate, which comprises a rack, two groups of profiling trimming mechanisms are arranged on two sides of the rack in a liftable manner, and each group of profiling trimming mechanism comprises a moving seat, a vertical profiling assembly, a horizontal profiling assembly and a scraper assembly, the vertical profiling assembly comprises a vertical profiling plate, a fixed vertical profiling wheel and two sets of lifting vertical profiling wheels, the vertical profiling plate is arranged on the movable base in a lifting mode, the fixed vertical profiling wheel is fixedly arranged on the vertical profiling plate, the two sets of lifting vertical profiling wheels are arranged on the vertical profiling plate in a lifting mode, and the vertical profiling plate is arranged on the movable base in a lifting mode. And the fixed vertical profiling wheels are arranged on the two sides of the fixed vertical profiling wheels. According to the utility model, the two groups of vertical profiling wheels are adjustably arranged on the vertical profiling plate through the sliding blocks, so that the bottoms or the tops of the three groups of vertical profiling wheels are kept on the same horizontal line, and the trimming precision is improved.

This utility model discloses a wall sanding device for architectural decoration engineering, including a base plate, a sanding area moving device, a moving block, a motor, and a sanding head. The sanding area moving device is fixed to the front side of the top of the base plate. This utility model, by setting up a dust suction hood and a telescopic hood, with the motor and sanding head located inside the dust suction hood and telescopic hood, collects dust at the source, greatly reducing the diffusion of dust in the air during sanding. This creates a relatively safe working environment for operators, significantly reducing the risk of dust inhalation and effectively protecting the respiratory health of operators. The dust suction hood and telescopic hood are made of transparent material, allowing operators to easily observe the working status of the sanding head and the dust collection situation in real time during operation, so as to adjust the sanding operation in a timely manner, ensuring sanding quality and dust collection effect. This solves the problem of the lack of equipment safety protection in the application of the aforementioned equipment.

The invention discloses a reciprocating type steel rolling mill smoke and dust collection device, comprising a dust hood and a dust extraction pipe, wherein the dust hood is formed by hingedly connecting two hood bodies, the hood body comprising an outer hood and an inner hood, the outer hood is connected to the inner hood on all sides, a cavity is arranged between the outer hood and the inner hood, dust suction holes are evenly arranged on the inner hood, the interior of the inner hood is divided into a plurality of dust suction chambers by a plurality of partitions, the lower end of the dust extraction pipe is connected to an equalizing pipe, a pull pipe corresponding to the number of dust suction chambers is connected to the equalizing pipe, an air outlet is arranged at the upper end of the outer hood, an arc suction pipe slidably connected to the pull pipe is connected to the air outlet, each dust suction chamber corresponds to a suction pipe, and a plug plate for adjusting the air volume is arranged on the side wall of the pull pipe. The opening size of the dust hood can be adjusted according to demand, the generated water vapor and dust can be fully absorbed, and the dust collection effect and efficiency of the dust hood are improved.

The utility model relates to a cutting device, which comprises a mounting seat, a cutting arm, a cutting knife, a cutting head, a driving device and a driving device, and is characterized in that the mounting seat is provided with the cutting arm; the dust collection box is installed at the end, close to the cutting knife, of the cutting arm, and a plurality of dust collection holes are formed in the outer side of the dust collection box; the negative pressure fan is mounted on the outer side of the mounting seat, and the negative pressure fan is connected to the dust collection box through a pipeline. The dust collection box is arranged at the end, close to the cutting knife, of the cutting arm, negative pressure is generated in the dust collection box through the negative pressure draught fan, so that dust is collected, the dust collection box can swing along with the cutting arm and is close to the cutting knife, the dust collection effect is better, and the dust collection efficiency is improved.