154 results about "Flour dust" patented technology

The invention belongs to the field of coal mine dust removal, and relates to a coal mining machine onboard integrated efficient dust remover and a filtering method thereof, an air inlet, a nozzle, a multi-stage filter screen, a corrugated plate demister, a centrifugal fan and other components are integrated to form an efficient dust removal system. During operation, dust-containing air enters through the air inlet, water mist is sprayed out of the nozzles to preliminarily wet dust, and then the dust with different particle sizes is effectively captured through multi-stage filtration of the coarse-efficiency filter screen, the medium-efficiency filter screen and the high-efficiency filter screen. And then the air is dehydrated by a demister, and clean air is discharged by a centrifugal fan. The equipment is provided with a dust cleaning brush and a differential pressure sensor, the filter screen can be automatically cleaned, and the filtering effect is guaranteed. The system has the advantages of efficient dust fall, water saving, environmental protection, intelligent monitoring, compact structure and convenient maintenance, can obviously reduce the dust concentration of the working face, improves the working environment, ensures the health of miners, and is a preferable scheme for dust control of the fully mechanized coal mining working face.

The invention discloses a dust removal device for a feed production line, and particularly relates to the technical field of dust removal, the dust removal device comprises an outer box body, the inner surface of the outer box body is fixedly connected with a partition plate, the inner surface of the middle position of the partition plate is fixedly connected with a fixed seat, and the inner surface of the fixed seat is rotatably connected with a rotating seat; a plurality of dust removing bags are arranged at the upper end of the rotating seat, a movable filtering assembly is arranged in an inner cavity of the outer box body, a springback assembly is arranged between a partition plate and the fixing seat, and a cleaning assembly is arranged on the right side of the partition plate. When the filter cloth is used for dynamically filtering air, the dust removal bag is driven to twist, rebound and intermittently vibrate to shake off dust on the surface of the dust removal bag, the cleaning burden and the cleaning frequency of a subsequent dust removal mechanism are reduced, the cleaning assembly and the blowing assembly are used for sweeping, knocking and blowing the filter cloth during filtering, and the dust removal efficiency is improved. The filter cloth is kept ventilated and smooth for a long time and is suitable for the scene of continuous production of a feed production line.

The invention relates to a fully mechanized coal mining face dust distribution spatio-temporal evolution prediction method and system based on multi-dust-source coupling, and belongs to the technical field of coal mine dust treatment and intelligent prediction. Aiming at the problems of insufficient quantification of multi-dust-source interaction, lack of respirable dust monitoring and low prediction model precision in the prior art, the invention provides the following scheme: constructing a coal cutter coal cutting dust production model and a hydraulic support moving dust production model, and fusing coal rock crushing characteristic parameters and equipment working condition parameters; establishing a dust migration numerical model based on a Navier-Stokes equation and a discrete phase model; calibrating model parameters in real time through a distributed sensor network; and generating a respiratory zone height dust spatio-temporal evolution graph and driving an intelligent dustproof system. The method has the effects that the dust concentration prediction error is reduced from 40% to 12-15%, and the dust source positioning error lt is reduced; the dust falling efficiency is improved by 30%, the water is saved by 22%, and the device is suitable for the scene with the mining height of 3-8 m and the wind speed of 0.5-3.0 m / s.

The invention relates to a fully-mechanized face multi-angle blowing-suction purification dust removal system and a dust removal method, and belongs to the technical field of coal mine dust treatment. Comprising a dust concentration sensor arranged on a hydraulic support and a linear dust remover arranged on a hollow interlayer of a chute baffle of the scraper conveyer. The dust concentration sensor detects the dust concentration of the coal face and transmits a signal to the control system, and the control system selectively opens and closes the dust remover at the corresponding position to achieve accurate dust removal. The linear dust remover forms an entrainment effect to suck dust generated by coal cutting of the roller of the coal mining machine, and the dust is purified. And meanwhile, a barrier is formed between the coal mining machine and the pedestrian side in manners of forming an air curtain, a water curtain, a fog gun and the like at the air outlet, so that untreated dust is prevented from diffusing to the pedestrian side for the second time. The device is simple in structure and convenient to mount, solves the problem of serious dust pollution of the fully-mechanized coal mining surface, and realizes source treatment of dust while preventing dust diffusion.

The invention provides a mine dust concentration prediction and analysis method based on big data, and the method comprises the steps: building a real-time monitoring network of multi-working-face operation in a mine, obtaining the distribution data of dust clouds of each working face and tunnel concentration distribution information, carrying out the data collection according to a dust superposition effect, and obtaining the initial dust diffusion boundary of each region; according to the initial dust diffusion boundary data, the dust concentration superposition coefficient, the interaction influence radius and the diffusion rate of the dust cloud cluster during multi-working-face operation are analyzed, and the diffusion boundary change trend and the key influence area are determined; adjusting a resource allocation optimization scheme of each region according to a real-time change trend of roadway concentration distribution and a control instruction set, and determining operation parameters and distribution positions of dust control equipment; according to the updated concentration distribution state, whether an area with the dust superimposed effect exceeding the standard exists or not is recognized, if yes, control resources of ventilation equipment, dust removal equipment and a spraying device are redistributed, and a new control instruction set is determined.

The utility model relates to the technical field of bag-type dust removers, in particular to a bag-type dust remover which comprises a shell, the top end of the shell is communicated with an exhaust port, a compartment rotation switching mechanism comprises six filtering chambers distributed in a honeycomb shape, and an air inlet pipe is fixedly connected to the lower portion of the outer wall of the shell. The control system controls and starts the corresponding pulse blowing pipes to blow downwards to form reverse airflow and strip a dust layer on the surface of the filter bag, the vibration motor drives the whole filter chamber to shake and shake off deep accumulated dust, the dust cleaning effect is good, the shaken-off dust is collected through the dust hopper, finally, the dust is discharged from the dust discharging pipe by opening the dust discharging valve, the pneumatic fluidization rod is started, the airflow enables the dust to be fluidized, and the dust cleaning effect is good. According to the invention, hardening and bridging are prevented, blockage of the ash hopper is avoided, manual knocking intervention is not needed, the safety is high, different filter chambers can be switched to enter a filter mode, and the other filter chambers sequentially enter an ash removal state, so that the device can work continuously without shutdown, and the working efficiency is improved.

The invention relates to the technical field of plasma cleaning, in particular to a drum type vacuum plasma cleaning machine which comprises a shell, the interior of the shell is a sealed environment, a cleaning cavity is rotatably installed in the shell, and a drum assembly is rotatably installed in the cleaning cavity. The roller assembly comprises a cylinder screen, a second side plate, two supporting rings and a plurality of first side plates. The first side plate and the second side plate rotate along with the drum screen, so that materials roll over when the drum screen rotates, the plasma cleaning uniformity is improved, meanwhile, the materials roll over to impact the drum screen, dust on the side wall of the drum screen is cleaned, and the cleaning efficiency is improved through the continuous switching state of the cleaning cavity. And the rolling frequency and strength of the materials in the drum screen are improved, and the uniformity of plasma cleaning is further improved. The materials are thrown upwards through rotation of the flexible strips, the collision force between the materials and between the materials and the drum screen is increased, and cleaning of dust in the drum screen and dust on the outer surfaces of the materials is further improved.

The invention relates to the field of electrostatic dust collection, and discloses an electrostatic adsorption type dust collection device for a painting workshop, the electrostatic adsorption type dust collection device comprises a box body, and an exhaust hopper and an air inlet hopper which are fixedly connected to two sides of the box body, the bottom of the box body is fixedly connected with an ash hopper, a dust collection plate is arranged in the box body, and the front end of the dust collection plate is movably connected with a corona electrode through a connecting frame; a plate cleaning assembly for cleaning dust on the surface of the dust collecting plate is arranged inside and outside the box body; the plate cleaning assembly comprises a push rod slidably connected to the interior of the box body, the dust collecting plate is fixedly connected to the exterior of the push rod, a sliding rod is fixedly connected to the interior of the box body, the dust collecting plate is movably connected to the exterior of the sliding rod, and a cleaning and scraping unit is arranged outside the sliding rod; dust attached to the surface of the dust collecting plate is cleaned through the cleaning rod, and the dust is separated from the dust collecting plate and falls into the dust hopper in cooperation with swinging of the dust collecting plate.

The invention relates to the technical field of flour dust falling, in particular to flour mill dust falling equipment and a using method thereof.The flour mill dust falling equipment comprises a middle shell, dust falling boxes are fixedly connected to the two sides of the middle shell, and dust collection bins used for alternately collecting dust and compressing are arranged on the surfaces of the outer sides of the dust falling boxes; the top surface of the dust falling box is provided with a dust falling nozzle for increasing the weight of sucked dust mist, the inner side surface of the middle shell is provided with a driven trigger piece for synchronizing the movement process of each component, and the outer side surface of the dust falling box is provided with a dust collection baffle for guiding airflow to enhance the adsorption range; according to the dust falling device for the flourmill, suspended dust is rapidly converted into settleable particles through a closed-loop process of double-side alternate dust collection, compression granulation and synchronous spraying weight increment in function, and the suspension condition required by dust explosion is cut off from the source; the whole process is closed, secondary diffusion is avoided, additional pump valves and electric control elements are not needed, energy consumption is low, and fault points are few.

The utility model relates to the technical field of spinning production, in particular to a filter screen filtering device for spinning production, which comprises a support, a positioning plate and a filter element plate, the support is integrally of an I-shaped structure, lateral through grooves are formed in transverse rods on two sides of the support, the positioning plate is mounted on the outer side of the middle of the support, and the filter element plate is mounted on the positioning plate. Side clamping plates are arranged at the upper end and the lower end of the positioning plate, limiting plates are clamped to the inner sides of the side clamping plates, extension plates are arranged on the sides, close to the positioning plate, of the limiting plates, filter element plates are clamped to the inner sides of the extension plates, embedding grooves are formed in the upper end and the lower end of each limiting plate, and the embedding grooves and the side clamping plates are mutually embedded; the problems that in the prior art, when a filter screen filtering device is used for filtering a spinning production environment, a filter element mode is adopted, dust generated in the production process is adsorbed, due to the fact that the phenomenon of filament flying easily occurs in the spinning process, filament flying can be attached to the surface of the filter element, dust cannot enter the filter element, and the filtering and absorbing effect is affected are solved.

The invention relates to the technical field of servo motors, in particular to a servo motor adopting a hollow shaft integrated cooling channel and a dough kneading machine, and the servo motor comprises a servo motor body, an assembling structure, an adjusting structure, a mounting structure, a dustproof structure, a heat dissipation structure and a filtering structure. The position of an installation hole in the end cover of the servo motor body is effectively adjusted through the arrangement of the adjusting structure, butt joint with a hole in a dough kneading machine is facilitated, the problem that repeated drilling is needed due to the fact that the position of the hole does not correspond is solved, flexibility is high, the servo motor body can be overturned by 90 degrees conveniently when maintained through the installation structure, and the service life of the servo motor body is prolonged. The servo motor body is prevented from being repeatedly detached from the dough kneading machine, the maintenance efficiency is improved, flour particles are effectively prevented from being attached to the servo motor body, meanwhile, a good heat dissipation effect on the servo motor body is achieved, flour dust is prevented from being blown into the surface of the servo motor body in the heat dissipation process through the arrangement of a filtering structure, and the service life of the servo motor body is prolonged. The filtering effect is good.

The utility model relates to the technical field of explosion-proof ground rails, in particular to an explosion-proof ground rail convenient for dust cleaning, which comprises a ground rail main body, a movable bottom plate is arranged on the ground rail main body, a straight-tooth right-handed gear and a right-handed helical rack which are in meshing transmission are arranged at the bottom of the movable bottom plate, and a vertical plate is arranged at the bottom of the movable bottom plate. A rotating arm and a mounting plate are arranged on the front side plate face of the vertical plate, a connecting arm is rotatably mounted at the end of the rotating arm, a swing arm is rotatably connected to the mounting plate, the movable end of the connecting arm is rotatably connected to the middle of the swing arm, and a mounting support is fixedly connected to the tail end, away from the mounting plate, of the swing arm. According to the explosion-proof type ground rail structure, the cleaning brush which is originally fixedly installed is designed to swing back and forth, in the advancing process of the movable bottom plate, the cleaning brush can synchronously and comprehensively clean dust on the surface of the rack, and the dust cleaning efficiency can be improved.

The application discloses a flour production device and process special for flour mills and relates to the technical field of flour production, which comprises a discharging mechanism, a supporting mechanism is arranged below the discharging mechanism, a conveying mechanism is arranged on one side of the discharging mechanism, a conveying belt two is arranged below the conveying mechanism, a rack is arranged on one side of the conveying belt two, a conveying belt one is arranged on the rack, a cylinder one is vertically arranged above the conveying belt one, and the discharging mechanism is arranged, so that the quantitative discharging is facilitated. Meanwhile, the depth of the telescopic pipe into the packaging bag is adjusted, so that the canning is facilitated, the flour dust is prevented from splashing everywhere, the clamping is prevented from being not fastened in the process of sudden filling, the packaging bag is prevented from falling off, the adjustment can be gradually performed, the supporting can be achieved in the clamping process, and the sealing effect is avoided.

The invention relates to the technical field of cement production equipment, in particular to a cement packaging machine with a dustproof device. The cement packaging machine comprises a cement packaging machine body and the dustproof device, an ash outlet is formed in the front side of the cement packaging machine body, the dustproof device is arranged on the front side of the cement packaging machine body, and the ash outlet is located in the dustproof device. The dustproof device comprises an outer shell, a dust suction hood, an elastic supporting assembly and a packaging bag dust removal assembly. Through cooperation of the packaging bag dust removal assembly and the elastic supporting assembly, dust attached to the outer surface of the cement bag can be effectively swept, compared with an existing technology only depending on a dust hood, an active sweeping link aiming at the dust on the surface of the cement bag is newly added in the scheme, and the dustproof effect is more comprehensive.

The utility model discloses a feeding device for a rice color sorter, which comprises a color sorter body, and a rice lifting and feeding mechanism is arranged on one side of the color sorter body. The rice lifting and feeding mechanism comprises an inclined rectangular shell, a circular barrel fixed in the rectangular shell, a plurality of filter holes uniformly formed in the side wall of the circular barrel, and an air suction pipe fixedly arranged on the upper side wall of the rectangular shell and connected with dust collection equipment; the first rotating shaft is rotationally arranged in the rectangular shell and located in the center of the interior of the circular barrel, the motor drives the first rotating shaft to rotate, the spiral blade is fixed to the first rotating shaft, the square feeding pipe is fixedly arranged on the side wall of the circular barrel and provided with an upward opening, and the square discharging pipe is fixedly arranged on the side wall of the circular barrel and provided with a downward opening. The rice feeding device has the advantages that the effects of lifting feeding rice and removing dust on the surface of the rice are achieved.

The gas cooled reactor nuclear power station with the fuel element capable of being purged comprises a fuel pipe, the fuel pipe is used for introducing the fuel element into the nuclear power station, an air inlet and an air outlet which are oppositely arranged in the vertical direction are formed in the pipe wall of the fuel pipe, the air inlet is located above the air outlet, and the included angle between the extending direction of the fuel pipe and the vertical direction is larger than or equal to a preset value; an outlet of the air supply pipe communicates with the air inlet, and the outlet of the air supply pipe faces the air outlet in the vertical direction; the air outlet pipe extends in the vertical direction, an inlet of the air outlet pipe communicates with the air outlet, the inlet of the air outlet pipe is formed in the upper end portion of the air outlet pipe, and the upper end portion of the air outlet pipe is matched with the pipe wall of the fuel pipe; the dust collector is provided with a dust inlet, a gas outlet and a dust outlet, and the dust inlet is communicated with the outlet of the air outlet pipe. Therefore, the gas cooled reactor nuclear power station capable of purging the fuel element has the advantage that dust on the surface of the fuel element can be removed so that operation can be stable.

The invention relates to the field of underground cavern group blasting construction, and particularly discloses an underground cavern group blasting construction working face dust control intelligent spraying method which comprises the steps that acoustic information and scene sequence images of a construction site are collected, and working face blasting construction procedures are obtained; after it is confirmed that blasting is completed on the construction site, real-time dust concentration space distribution information of the construction working face is obtained according to the scene sequence image; a spraying working position is determined according to the dust concentration space distribution information, and a navigation positioning system is used for autonomous navigation to reach the spraying working position; spraying parameters are determined according to the dust concentration space distribution information, and spraying work is started; the spraying effect is evaluated according to the real-time dust concentration space distribution information, and spraying work is stopped after the dust concentration control condition reaches the standard. The invention further provides a corresponding device. According to the method and the device, the dust concentration can be obtained in real time, and intelligent rapid dust falling autonomous operation can be implemented.

The utility model discloses a water injection device and bread machine relates to household appliance technical field, including box and lid, be equipped with container in the box, and the one side of container has the water tank of detachable installation in the box, and the water tank has the communicating pipe. The lid pivoted connection is in the top of box, and the lid has the annular setting water injection pipe, and the communicating pipe communicates the water injection pipe, and the water injection pipe is equipped with a plurality of water injection holes to the side wall of container, and a plurality of water injection holes interval setting along the length direction of water injection pipe. At the same time, along the radial of container, the water injection hole is close to the inner peripheral wall of container. When injecting water, water from the water tank enters the water injection pipe through the communicating pipe, and the water injection pipe injects water through a plurality of water injection holes arranged in a ring, thereby forming the annular water curtain close to the inner peripheral wall of container, can avoid the flour dust to lift and leave the container in the water injection process, reduces the raw material waste, reduces the flour accumulation in the box interior, to reduce the cleaning difficulty.

This utility model discloses a dust removal device for plastic film production, including a dust collection box. A drive box is fixedly connected to the rear of the dust collection box, and support plates are fixedly connected to both the left and right sides. A winding motor is fixedly connected to the dust collection box. Openings are provided on both the front and rear sides of the dust collection box, and sliding rods are fixedly connected to both openings. Sliding blocks are slidably connected to the sliding rods, and pressure rollers are rotatably connected between the two sliding blocks. Inlet and outlet ports are provided on both the left and right sides of the dust collection box, and guide rollers are rotatably connected to both inlet and outlet ports. A conductive rubber roller is rotatably connected to the center of the dust collection box, and an exhaust fan is fixedly connected to the bottom of the dust collection box below the conductive rubber roller. This utility model's dust removal device for plastic film production, through a specific structure, uses the conductive rubber roller as a dust collecting electrode to adsorb dust on the film, thereby completing the cleaning of dust on the film surface. Simultaneously, the exhaust fan removes dust from inside the dust collection box, improving the overall dust removal effect of the film.

The utility model relates to ultra -fine powder production technical field, concretely relates to a kind of grading device of ultra -fine powder dry grinder. Including machine body seat, the middle position of machine body seat upper side wall is fixed with powder outlet pipe, the inside of machine body seat is provided with grading assembly, the grading assembly includes the assembly pipe vertically fixed in the inside of powder outlet pipe, the upper end of assembly pipe is through powder outlet pipe side wall and extends out, the inside of assembly pipe is coaxially rotationally arranged with main shaft by bearing, the upper end of main shaft extends to the outside of assembly pipe and is provided with driving mechanism, and the driving mechanism is used to drive main shaft rotation. The utility model, through the combination of gland and inlay ring to form labyrinth seal structure, and in its inside filling high-temperature grease constitutes airtight sealing barrier, so that the dust in powder outlet pipe cannot invade assembly pipe inside through labyrinth seal structure, simultaneously in avoiding bearing surface dust accumulation, thereby significantly prolong the service life of bearing in dust environment.

The invention discloses an efficient dust removal device for crushing and sorting retired fan blades, which comprises a pretreatment unit, a first purification unit and a second purification unit, the pretreatment unit comprises a device body, a metal grating, a fiber interception net and an induced draft fan; the first purification unit comprises a bag-type dust collector, a dust concentration sensor, a pulse injection device and a screw conveyor, the dust concentration sensor detects the thickness of a dust layer on the surface of the bag-type dust collector, the discharge end of the scraper conveyor is communicated with a dust storage tank, the second purification unit comprises an adsorption tower, a scattering dust instrument and a VOCs detector, and the adsorption tower is communicated with the dust storage tank. The scattering dust meter and the VOCs detector are arranged on a pipeline at an air outlet of the adsorption tower, and the control mechanism comprises an audible and visual alarm, a controller and a central control screen. The high-efficiency dust removal device for crushing and sorting the retired fan blade has the advantages of directionally intercepting fibers, dynamically adapting the dust yield and cooperatively purifying multiphase pollutants.

The application provides a paperboard dust removal device of a paperboard printing machine, and relates to the technical field of printing machines, which comprises a base, a dust removal box arranged on the base, a mounting seat movably arranged on the base, a conveying assembly arranged on the base and used for driving the mounting seat to enter and exit the dust removal box, two holders movably arranged on the mounting seat, a combination and separation assembly arranged on the mounting seat and used for driving the two holders to combine with each other or separate from each other, a suction assembly arranged on the holder and used for adsorbing paperboard, and a pushing assembly arranged on the holder and used for pushing the paperboard, a dust removal assembly arranged in the dust removal box and used for cleaning dust on the surface of the paperboard, and a dust collection assembly arranged in the dust removal box and used for collecting dust; the paperboard dust removal device of the paperboard printing machine can comprehensively clean the two side surfaces of the paperboard, ensure the dust removal effect, prevent dust, paper scraps and other impurities attached to the paperboard from affecting the printing effect, and ensure the printing quality.

The invention relates to the technical field of power equipment safety and heat dissipation, and discloses a transformer wiring cavity structure integrated with a heat dissipation and explosion-proof module, which comprises a box body, a transformer winding, a one-way ventilation heat dissipation module and a dust blowing-off mechanism. The box body is provided with an air inlet window and an air outlet window, the air inlet window and the air outlet window are matched with the air inlet flashboard and the air outlet flashboard respectively to form a one-way sealing structure, and the one-way ventilation heat dissipation module drives air to flow directionally in a power-on state to achieve circulating heat dissipation in the wiring cavity and is automatically sealed in a power-off or fire state to prevent external oxygen from entering. Therefore, the combustion and explosion risks are reduced. The dust blowing-off mechanism is arranged in the box body, dust on the surface of the transformer winding is cleaned in a rotary blowing mode, and gas can be conveyed into the wiring cavity under the high-temperature or abnormal working condition so as to assist in cooling or restrain combustion. According to the invention, the functions of heat dissipation, dust prevention and explosion prevention are integrated, and the operation safety and reliability of the wiring cavity of the transformer can be effectively improved.

The utility model relates to effervescent tablet processing technical field, especially effervescent tablet packing clean use nozzle, including the material conveying platform, be equipped with the air jet nozzle mechanism for removing effervescent tablet surface dust on the material conveying platform, air jet nozzle mechanism includes the material conveying round roller of symmetrical setting at the both ends of material conveying platform, is provided with the punching conveyor belt between two material conveying round rollers, the outside fixed mounting of material conveying platform is used for driving material conveying round roller material conveying motor. The utility model discloses through setting air jet nozzle mechanism, adopts the double -channel nozzle design of'main airflow vertical cleaning + auxiliary airflow oblique air curtain', and high -pressure main airflow directly impacts effervescent tablet surface, can effectively peel off and attach dust, at the same time, low -pressure auxiliary airflow forms air curtain wall with 45 inclination, forces the dust that is blown apart directional movement along the oblique direction, then again combines the negative pressure collection of dust suction platform, can greatly reduce the re -adhesion rate of dust, greatly improved the cleaning effect.

The utility model provides equipment for treating dust and magnetic substances on the surface of particle silicon, which comprises a dust removal device for treating the dust on the surface of the particle silicon, and a magnetic absorption device for treating the magnetic substances on the surface of the particle silicon is fixedly arranged below the dust removal device; a feeding hole (11) is formed in the top of the dust removal device, and the bottom of the dust removal device is communicated with the top of the magnetic attraction device; and a discharge hole (25) is formed in the bottom of the magnetic attraction device and is communicated with a subsequent storage device. The device disclosed by the utility model can effectively remove free silicon powder on the surface of the granular silicon, reduce the turbidity and metal content of the product and effectively improve the quality of the granular silicon product.

The application discloses a mobile tunnel face dust migration blocking system, which comprises a single-end tunnel, a face, a compressed air system, an air extraction system, a mobile dust blocking instrument and a blocking instrument controller. The compressed air system is arranged on one side wall of the single-end tunnel and comprises a tunnel compressed air fan and a first air duct. The tunnel compressed air fan is connected with the first air duct, and the tail end of the first air duct is close to the face. The air extraction system is arranged on the other side wall of the single-end tunnel and comprises a tunnel extracted air fan and a second air duct. The tunnel extracted air fan is connected with the second air duct. The wind barrier generated by the mobile tunnel face dust migration blocking system can block the diffusion of the dust after blasting into the tunnel, improves the dust exhaust efficiency of the air extraction system after blasting, and effectively protects the physical and mental health of the face operators.

The invention belongs to the technical field of negative-pressure dust removal, particularly relates to a negative-pressure dust removal device for production of wood-plastic products for integrated houses, and provides the following scheme aiming at the problems that dust absorption is not ideal and a filter element is inconvenient to clean: the negative-pressure dust removal device comprises a machine base, and a mixing pipe is arranged at the top of the machine base; and one side of the mixing pipe is provided with a negative pressure dust removal mechanism used for absorbing dust on the surface of the wood-plastic product, and one side of the machine base is provided with a dust collection barrel. Through mutual cooperation of the adjusting assembly, the front dust collection assembly, the rear dust collection assembly and the auxiliary assembly, dust generated in the wood product machining process on the machining table can be rapidly and thoroughly collected, the dust collection range is wide, the cleanliness of the machining environment is guaranteed, and meanwhile, the machining efficiency is improved. By means of mutual cooperation of the cleaning auxiliary assembly, the dust removal assembly and the filter element part, a plurality of filter elements can be cleaned at a time, the service life of the filter elements is prolonged, and the replacement period of the filter elements is prolonged.

The invention discloses a method for improving the flatness of sheepskin surface paper of a paper tube, which comprises an unwinding frame, a gluing device and a tensioning guide rod assembly arranged at the feeding end of the gluing device, an infiltration water tank is arranged between the unwinding frame and the tensioning guide rod assembly, and a leveling assembly is arranged between the tensioning guide rod assembly and a glue tank. A water control assembly is arranged at the discharging end of the infiltrating water tank, sheepskin surface paper on the unwinding frame is infiltrated through the infiltrating water tank, the humidity is controlled through the water control assembly, dust on the surface is scraped off, then the sheepskin surface paper is pulled to the tensioning guide rod assembly, and finally the sheepskin surface paper is flattened through the tension and flattening assembly and then enters the gluing roller to be subjected to single-face gluing. Compared with the prior art, the surface paper has the advantages that the tensile strength and the surface tidiness of the surface paper can be improved, the sheepskin surface paper dust is cleaned, meanwhile, the breakage condition is avoided, the surface smoothness of a formed paper tube is remarkably improved, and the surface paper plays a key role in high-speed winding forming and unwinding processing of superfine chemical fiber spinning cakes below 0.55 dtex.

The invention discloses a control dust removal system for a driving working face with a rotational flow air curtain cooperating with negative pressure air draft, and relates to the field of dust removal, the control dust removal system comprises a press-in fan, an air pressing barrel, a telescopic rotational flow air supply outlet, a telescopic dust collection cover, an air draft barrel and a dry dust removal fan; the press-in fan and the air pressing barrel are hung at the top of the central position of the tunneling roadway, the telescopic rotational flow air supply outlet is formed in an outlet of the air pressing barrel, and the horizontal distance between the telescopic rotational flow air supply outlet and the section of the tunneling working face is about 10-20 m. The problems of low operation efficiency and energy consumption increase of a ventilation and dust prevention system of the driving working face can be prevented, and the phenomenon that dust further pollutes underground airflow and other workplaces can be prevented; the air pressing barrel is adopted to generate a rotational flow air curtain to control dust on the driving face, meanwhile, the air draft barrel and the dry type dust removal fan are cooperated to capture and purify the dust, and purified dust-containing airflow can enter an underground ventilation system for circulating ventilation.