34results about How to "Reduce dust content" patented technology

The invention belongs to the technical field of magnetic variable measurement, and particularly relates to a nuclear magnetic resonance magnetic variable measurement debugging device which comprises a mounting part, an inner supporting mechanism, a supporting mechanism, a control mechanism, a flow guide mechanism and an air inducing mechanism. The mounting part comprises a bearing bracket and a mounting box fixedly mounted on the side wall of the bearing bracket; the inner supporting mechanism comprises a bearing disc and a clamping jaw, the bearing disc is rotationally arranged on the inner wall of the bearing support, and the clamping jaw is slidably mounted on the outer wall of the bearing disc; the supporting mechanism comprises an arc-shaped frame and supporting rollers rotationally installed at the two ends of the arc-shaped frame. The arc-shaped frame is fixedly installed on the upper end face of the installation box. The control mechanism is used for controlling the clamping jaw to move; the air inducing mechanism comprises a control cylinder, an exhaust hood and an air inlet hood, the control cylinder is fixedly installed on the inner wall of the bearing support, and inner cavities of the exhaust hood and the air inlet hood are connected through the control cylinder; through cooperation of the structure, detection signal distortion is prevented, the magnetic variable measurement precision is greatly improved, and the full-detection requirement of batch production is met.

This utility model discloses an exhaust structure for a dissolving tank in an alkali recovery boiler, including a dissolving tank shell, an exhaust pipe installed on the dissolving tank shell, an exhaust pipe connecting box inside the dissolving tank, an outlet of the exhaust pipe connecting box connected to the inlet of the exhaust pipe, a grid installed at the inlet of the exhaust pipe connecting box, and flushing pipes installed on both the exhaust pipe connecting box and the grid, with the flushing pipes connected to pipes, allowing water to flow into the exhaust pipe connecting box along the pipes and flushing pipes; when gas passes through the grid, dust and unvaporized liquid droplets in the gas are captured by the grid, purifying the gas discharged through the dissolving tank by using the grid, reducing the dust content of the discharged gas and increasing the dryness of the gas, and the flushing pipes are installed to periodically flush the exhaust pipe connecting box and the grid, reducing the risk of sodium salt caking and corrosion in the exhaust pipe, and improving the continuous operation cycle of the system.

According to the titanium and titanium alloy glasses frame plate polishing and grinding device, a trolley is arranged on the platform face of a platform frame, supporting wheels distributed in the width direction of the trolley are symmetrically installed on the front side of the bottom face of the trolley, and a polishing and grinding assembly arranged at the rear end of the upper plane of the trolley is connected with a transmission driving device arranged on the trolley; the transmission driving device drives the polishing and grinding assembly to polish and grind the gold glasses frame plate placed on the platform frame. A dust suction device used for sucking dust generated in the polishing and coping process is arranged at the front end of the platform face of the platform frame. The transmission driving device drives the polishing and grinding assembly to rotate to polish and grind a gold spectacle frame plate placed on the platform frame, the defect that polishing and grinding of tiny flaws on the surface of a spectacle frame are inconvenient is overcome, and the polishing and grinding efficiency and quality of the tiny flaws on the surface of the spectacle frame are improved. And the dust content in the polishing and coping process is reduced, and a relatively healthy working environment is provided for workers.

This invention relates to a commercial vehicle intake system and a commercial vehicle, belonging to the field of vehicle power systems. The technical solution is as follows: A commercial vehicle intake system includes an intake duct, an oil filter, and an air filter connected sequentially along the airflow direction. A water-screening assembly is installed within the air inlet of the intake duct, comprising a water-screening plate and a water collection hopper, the bottom of which connects to the outside of the intake duct. A tower-type water-filtering assembly is installed within the air outlet of the intake duct, comprising multiple stacked blades, with a first water collection trough below the blades. A swirl assembly is installed at the air inlet of the oil filter, comprising a swirl fan, with a second water collection trough below the fan. This solution, through a three-stage water removal assembly, gradually separates moisture from the air while simultaneously improving the removal capacity of dust and other impurities, significantly reducing the moisture and dust content of the air entering the oil filter and air filter, thus ensuring the service life of the oil filter and air filter and the combustion performance of the engine.

This utility model discloses a multi-stage dust filtration and purification device for sandblasting machines, belonging to the technical field of dust purification devices. It includes: a sandblasting machine body; a connecting pipe fixedly installed on one side of the sandblasting machine body; a purification box installed at one end of the connecting pipe; a spray assembly inside the purification box; and a water tank, which has a short pipe fixedly installed on the top of the water tank and a water outlet pipe at the top of the short pipe. This achieves preliminary dust purification, significantly reducing the filtration load on subsequent filter boxes one and two, extending the service life of the primary and secondary filter plates, and significantly reducing the dust content in the exhaust gas, effectively meeting environmental emission standards, reducing dust pollution to the atmospheric environment, and greatly shortening the time for cleaning and replacing filter plates. It also avoids performance degradation of the entire purification device due to local filtration failure, and the double fixing prevents the filter plates from loosening or shifting during operation.

The invention relates to the field of Internet of Things, in particular to a small intelligent gateway device of the Internet of Things. The invention provides the small-sized Internet of Things intelligent gateway device which can accelerate air circulation to improve the heat dissipation efficiency, can adsorb moisture and dust in air and prolongs the service life of the gateway. The invention discloses a small-sized intelligent gateway device for the Internet of Things, and the device comprises a pedestal, a gateway housing, a gateway mainboard, and the like. The base is fixedly connected with a gateway shell, and the gateway shell is fixedly connected with a gateway mainboard. An operator starts an air pump, the air pump exhausts air into a gateway shell, the air takes away heat generated by a gateway mainboard, the temperature of the gateway mainboard is reduced, the gateway mainboard can work continuously, then the operator starts a servo motor, an output shaft of the servo motor rotates to drive two sets of swing plates to swing in different directions in a reciprocating mode, and the two sets of swing plates swing in different directions. Therefore, air circulation in the gateway shell is smoother, and the air takes away heat generated by the gateway mainboard more quickly.

The utility model discloses an efficient integrated pretreatment system, which relates to the technical field of automatic temperature control devices and comprises a visible washing tank, a two-way needle valve is arranged at the bottom of the visible washing tank, a gas-liquid separator is communicated with the side surface of the visible washing tank, a pretreatment cabinet is arranged on the outer side of a pretreatment cabinet, and a gas-liquid separator is communicated with the gas-liquid separator. The side face of the gas-liquid separator is communicated with the membrane filter through the adjustable flow meter, the zero-point gas switching loop is arranged on the side face of the silica gel tank, by means of the pretreatment system, the replacement number of pressure reducing valves is reduced, the maintenance cost is saved, meanwhile, the liquid level is convenient to adjust through the visual water washing tank, the water washing effect is improved, and the water washing efficiency is improved. The pretreatment system is relatively high in desulfurization and sealing performance, the leakage rate of equipment is reduced, and meanwhile, the risk of pollution of a gas chamber of an online analyzer is reduced. Two paths of switchable desulfurization tanks are adopted, so that continuous and uninterrupted online measurement and online desulfurization agent replacement are realized.

The invention discloses an efficient dedusting glass fiber reinforced plastic desulfurizing tower, and belongs to the technical field of glass fiber reinforced plastic desulfurizing towers, the efficient dedusting glass fiber reinforced plastic desulfurizing tower comprises a tower tank, a gas inlet pipe and a gas outlet pipe, the gas inlet pipe and the gas outlet pipe are installed on the tower tank in a penetrating mode to control gas inlet and outlet, filler is embedded in the tower tank, and a sprayer is installed in the tower tank; the sprayer and the bottom of the tower tank are communicated and connected with a water conveying pipe; a pump body is mounted on the water conveying pipe; an outer guide cover and an inner guide cover are coaxially arranged in the tower tank, the outer guide cover fixedly covers the inner guide cover, an air inlet pipe penetrates through the outer guide cover and is in through connection with the inner guide cover, an ash discharge conical barrel is rotationally connected to the lower portion of the inner guide cover, and a plurality of inclined pipes are in through connection with the outer portion of the ash discharge conical barrel in the circumferential direction. A fan-shaped groove communicated with the interior of the tower tank is formed below the outer guide cover; the desulfurizing tower can circularly perform dust removal treatment on gas introduced into the gas inlet pipe, so that the dust content of the gas in the desulfurizing tower is effectively reduced, and the gas purification treatment effect is improved.

The utility model provides a kind of coal pulverizer coal dust initial temperature promotion device, it is related to the technical field of coal-fired unit, including the flue between denitration device and air preheater and the flue gas inlet of coal pulverizer are communicated to the first pipeline leading out between them, high-temperature dust collector and temperature rising fan are sequentially provided on the first pipeline along the flow direction of flue gas;Flue between induced draft fan and chimney and the flue of first pipeline and second pipeline between high-temperature dust collector and temperature rising fan are converged;Valve group is arranged on the first pipeline and second pipeline;Valve group electric signal is connected with temperature control unit, for calculating the drying output demand temperature of coal pulverizer, solve the existing preprocessing easy to return moisture and technical problem of backflow abrasion equipment, reach the technical effect that internal flue gas of system is used to provide heat for coal pulverizer, while saving energy, reducing coal pulverizer explosiveness, improve low load condition boiler combustion state, improve boiler efficiency.

The utility model relates to a dust explosion-proof ventilation cavity which comprises a ventilation cavity body, two baffles are arranged in the middle of the ventilation cavity body, the lower side of the middle of the ventilation cavity body is of a hollowed-out structure, an atomization assembly is arranged on the upper side of the middle of the ventilation cavity body, the lower side of the middle of the ventilation cavity body is connected with an installation frame, the left portion and the right portion of the installation frame are connected with clamping plates in a sliding mode, and a collection frame is connected between the clamping plates in a clamped mode. The collecting frame is of a detachable connecting structure. Through the inclined and hollowed-out structure in the middle of the ventilation cavity, atomized dust can quickly slide into the collection frame, so that the dust content in the ventilation cavity is reduced, when the water content in the collection frame reaches a threshold value, the color-changing water-absorbing cotton column can timely trigger a visual alarm, and the dust can be quickly cleaned through the detachable connecting structure of the collection frame; meanwhile, a pressure relief channel is rapidly opened through a fuse link at a pressure relief opening, explosive shock waves are directionally released, displacement of the blocking plate is limited through a connecting rope, the secondary damage risk is reduced, and the explosion venting overpressure peak value is rapidly reduced.

The invention relates to the technical field of desulfurization and dust removal devices, in particular to an environment-friendly efficient industrial flue gas desulfurization and dust removal device which comprises a supporting seat, a protective shell is fixedly mounted on the surface of the supporting seat, a top cover is fixedly mounted at the top of the protective shell, and an exhaust pipe is fixedly mounted on the surface of the top cover. An air inlet is formed in the side face of the protective shell. According to the flue gas dust removal device, large-particle dust in flue gas can be removed through the dustproof plate, fine dust in the flue gas can be filtered and purified through the filter, the dust content in the flue gas is reduced, clear water containing a desulfurizing agent can evenly flow to the surface of the partition plate under the action of the flow guide groove, a water curtain is formed, and the dust removal effect is improved. Flue gas enters the partition plates through the notches, residual dust and sulfide in the flue gas are adsorbed and purified under the action of the adsorption layers and the water curtains, and by arranging the multiple partition plates and the adsorption layers, the retention time of the flue gas in the partition plates can be prolonged, and the purification efficiency is improved.

The utility model discloses dust treatment equipment for a resin anchor production workshop, and relates to the technical field of dust treatment equipment, the dust treatment equipment comprises a purification treatment box, a mounting cylinder is connected in the purification treatment box, an auger is rotatably connected in the mounting cylinder, a plurality of air outlet holes are formed in the auger, one side of the mounting cylinder is connected with an air inlet pipe, and the other side of the mounting cylinder is connected with an air outlet pipe. One end of the air inlet pipe extends to the outside of the purification treatment box, one side of the purification treatment box is connected with a steam generator, and the steam generator is connected with an air outlet pipe; according to the utility model, the steam generator is used for generating steam, and the steam is uniformly distributed in the mounting cylinder through the air outlet hole of the auger and is fully mixed with dust-containing gas. The auger rotates to prolong the contact time of dust and steam, the dust is fully wetted and agglomerated, and compared with a traditional spraying type treatment mode, the dust catching efficiency is improved, and the dust content in a workshop is effectively reduced.

This invention relates to a commercial vehicle air intake assembly and a commercial vehicle, belonging to the field of vehicle power systems. The technical solution is as follows: a commercial vehicle air intake assembly includes an air intake body, within which a water screening component, a water filtering component, and a vortex component are provided. The water screening component includes a water screening plate and a water collecting hopper, the bottom of which connects to the outside of the air intake body. The water filtering component includes multiple stacked blades, with a first water collecting groove below the blades, which connects to the outside of the air intake body. The vortex component is located below the water filtering component, and a second water collecting groove is also provided below the vortex component, connected to the outside of the air intake body through the first water collecting groove. This solution, through a three-stage water removal assembly, gradually separates moisture from the air while simultaneously improving the removal capacity of dust and other impurities, significantly reducing the moisture and dust content of the air entering the oil filter and air filter, thus ensuring the service life of the oil filter and air filter and the combustion performance of the engine.

This invention relates to the field of mold wear detection technology, specifically disclosing a wear detection mechanism for automotive interior part molds. The mechanism includes a support frame and a guide rod mounted thereon. A reciprocating lead screw is bearing-connected to the support frame, and a mounting bracket is threaded onto the reciprocating lead screw. A screw rod is fixedly connected to the lower end of the mounting bracket, and the screw rod is connected to a photosensitive scanner via a follower-type displacement mechanism. The follower-type displacement mechanism includes a worm gear threaded onto the screw rod. This invention utilizes a sufficiently large detection range of the photosensitive scanner, making it suitable for wear detection of larger-sized automotive interior part molds. Furthermore, during wear detection of automotive interior part molds using the photosensitive scanner, a gentle breeze is continuously blown upwards from the mold, effectively removing dust from the space above the mold and ensuring a sufficiently low dust content in the space above the mold during photosensitive scanner detection, thereby improving the accuracy of the detection results.

This application relates to the field of dust removal equipment technology, specifically disclosing a dust removal device for catalyst powder batching and mixing, including a mixer and an installation platform. The mixer is fixedly installed on one side of the installation platform, and four sets of telescopic rods are spaced apart on the installation platform. The telescopic ends of the four sets of telescopic rods are hinged to a vibrating screen plate, and the four sets of telescopic rods are respectively hinged to the four corners of the vibrating screen plate. A feed pipe is provided at the upper end of the mixer, and the end of the vibrating screen plate near the mixer is located directly above the feed pipe. A vibrating screen assembly and a collection assembly are provided on the installation platform. The catalyst raw material is added to the vibrating screen plate. The vibrating screen assembly in this application can make the vibrating screen plate rise and fall along the telescopic direction of the telescopic rods, thereby realizing the vibration and screening of the catalyst raw material and reducing the dust generated during mixing. The collection assembly on the installation platform can collect the dust screened out, reducing the dust escape rate. The catalyst raw material after vibration and dust removal can be added to the mixer through the feed pipe for mixing.

The utility model discloses a grinding device for a wedge-shaped strip inclined plane of a blade root of a wind power generation blade, which comprises a rack, a propelling track arranged on the inner side of the rack, a propelling gear in meshed connection with the propelling track, a propelling motor connected to the bottom of the propelling gear, a mounting frame arranged on the outer side of the propelling motor, and an assembling plate arranged on the top of the mounting frame. The assembling plate is slidably arranged on the rack, a clamping base is installed on one side of the top of the assembling plate, a clamping groove is formed in the clamping base, a fixing block is installed on the other side of the top of the assembling plate, pressing tools are installed on the outer side of the clamping base and the outer side of the fixing block, a dust cover is installed on the top of the rack, openings are formed in the left side and the right side of the dust cover, and a grinding motor is installed on the inner side of the dust cover. The power output end of the polishing motor is connected with a rotating rod, the bottom of the rotating rod is connected with a polishing head, the outer side of the polishing head is sleeved with a dust suction cover, the back of the dust suction cover is fixedly installed in a dust cover, the dust suction cover is connected with a dust suction pipe, and the dust suction pipe penetrates to the outer side of the dust cover and is externally connected with dust suction equipment.

The utility model discloses a punching device for motor shell production, and relates to the technical field of motor shell punching. Comprising a mounting base, a punching mechanism used for motor shell production is arranged on the mounting base, the motor shell needing to be punched is horizontally arranged on the outer walls of supporting plates in a sleeving mode and attached to the side wall of a limiting support, sliding blocks are pushed, the four sets of supporting plates are expanded, and therefore the inner wall of the motor shell is expanded and fixed; the motor shell punching device has the advantages that the motor shell is prevented from being sunken due to pressure during punching, the boundary dimension precision and the surface quality of the motor shell are guaranteed, and subsequent motor assembling and other procedures can be smoothly carried out; the clamping plate is pushed through the second electric push rod to be close to the outer wall of the lowest end of the motor shell; and a group of supporting plates at the lower end of the inner wall of the motor shell are matched to clamp the motor shell, so that the machining stability is ensured, the accuracy of the punching position is improved, and the punching precision and consistency are ensured.

The utility model relates to a dust adsorption device which comprises a first shell, an air inlet pipe, an air outlet pipe and an adsorption assembly, the upper end and the lower end in the first shell are communicated with the air outlet pipe and the air inlet pipe respectively, and the adsorption assembly is located in the first shell and comprises an adsorption pipe, a fixing column and an end plate. The upper ends and the lower ends of the fixing columns are fixedly connected with the end plates respectively, the fixing columns are circumferentially arranged with the axis of the air outlet pipe as the axis, and each fixing column is fixedly connected with at least one column of adsorption pipes. Through low-temperature adsorption, adsorbent adsorption and normal-temperature adsorption, the dust content in the adsorbed waste gas is greatly reduced, the quantity of dust deposited on the inner wall of the pipeline is reduced, and the pipeline between the dry pump and the waste gas treatment equipment is prevented from being blocked.

The utility model belongs to dust removal technical field relates to a kind of pipeline structure suitable for ash removal system, including air inlet pipe, conveying pipe and air outlet pipe, the import end of conveying pipe is communicated the air inlet pipe outlet end, the export end of conveying pipe is communicated the import end of air outlet pipe, the included angle of air inlet pipe and conveying pipe is 45 °~60 °, the included angle of conveying pipe and air outlet pipe is 120 °~135 °, air inlet pipe and air outlet pipe are parallelly arranged, a plurality of first shower heads are arranged in air outlet pipe inside at equal intervals along vertical direction, and a plurality of first shower heads are connected water source by pipeline.

The utility model discloses a flue gas desulfurization and dust removal filter which comprises a box body, a desulfurization box is fixedly installed at the bottom in the box body, a transmission box is fixedly connected to the position, close to the bottom, of one side of the box body, a motor is fixedly installed at the bottom of one side in the transmission box, a first transverse rod is arranged on one side of the motor, and a second transverse rod is arranged on the other side of the motor. And a protection box is fixedly connected to the center of the top of the desulfurization box. According to the flue gas desulfurization and dust removal filter, through the design of a motor, a first cross rod, a second cross rod, stirring rods and a first transmission wheel, the motor drives the first cross rod to rotate, and under the linkage action of a belt and the transmission wheel, the second cross rod synchronously rotates to drive the two groups of stirring rods to fully stir a desulfurization agent in a desulfurization box; the contact area and the reaction opportunity of the desulfurizing agent and sulfur oxide in the flue gas are greatly increased, the desulfurization efficiency bottleneck caused by non-uniform distribution of the desulfurizing agent and insufficient reaction in the traditional equipment is effectively broken through, and the desulfurization reaction rate and effect are remarkably improved.

This invention provides a continuous and safe system and method for treating converter flue gas. The system includes a converter body, a vaporization cooling flue, a flue gas pretreatment device, and a waste heat recovery device. The flue gas pretreatment device includes a closed cavity with a flue gas inlet, a flue gas outlet, a dust discharge port, and an air inlet. A movable partition is installed inside the cavity. The converter body outlet is connected to the flue gas inlet via the vaporization cooling flue, and the flue gas outlet is connected to the waste heat recovery device. This invention uses a flue gas pretreatment device to ensure a stable and continuous output of intermittently generated flue gas, avoiding the impact of flue gas fluctuations on the operational stability of the waste heat recovery device. This results in higher quality steam, effectively extends the service life of the waste heat recovery device, and reduces maintenance costs. Simultaneously, it allows high-temperature combustible flue gas to mix and react with air above its auto-ignition point, avoiding the temperature conditions for combustible gas explosions and preventing safety issues during gas recovery.

The utility model discloses air dust water curtain atomization treatment equipment, and belongs to the field of dust treatment.The air dust water curtain atomization treatment equipment comprises a dust water curtain treatment box and water supply equipment, the top of the dust water curtain treatment box is fixedly connected with one end of a first pipeline, and the other end of the first pipeline is fixedly connected with a second-stage treatment tank; the top of the secondary treatment tank is fixedly connected with one end of a pipeline II, the other end of the pipeline II is fixedly connected with a tertiary treatment tank, the top of the tertiary treatment tank is fixedly connected with one end of a pipeline III, and the other end of the pipeline III is fixedly connected with a fan; by arranging the dust water curtain treatment box, the second-stage treatment tank and the third-stage treatment tank to be matched with the spray pipe assembly and the water spray assembly, dust in air can be treated for multiple times, so that the dust content in the air can be reduced for multiple times, the dust can be finally discharged from the fan, air dust treatment is better carried out, air pollution is reduced, and the service life of the air purifier is prolonged. And a user is protected, and the dust treatment effect is improved.

The utility model discloses a printing and dyeing waste gas treatment device, which belongs to the technical field of printing and dyeing waste gas and comprises an absorption tower, an absorption cavity is arranged in the absorption tower, a gas outlet is arranged at the upper end of the absorption cavity, a gas inlet is arranged on the side wall of the absorption cavity, and a filter screen is fixed on the inner wall of the absorption cavity; an air outlet of the fan is communicated with the air inlet; the water outlet device comprises a water outlet support, the water outlet support is installed in the absorption cavity, and a plurality of spray heads are arranged on the water outlet support; the water supply device is used for supplying water to the nozzles; and the transverse moving device is used for driving the water outlet bracket to transversely move in the absorption cavity. The nozzle atomizes the sprayed water, and the transverse moving device drives the water outlet bracket to transversely reciprocate in the spraying process, so that the range of the sprayed water can be increased, the sprayed water is in full contact with the filtered waste gas, and the dust content in the waste gas is reduced.

This utility model relates to the field of flange reaming, and discloses a flange reaming forming device, including a processing table. The top of the processing table is equipped with an air blowing and chip suction mechanism and a translational clamping mechanism. The air blowing and chip suction mechanism includes a conical cylinder with an air outlet chamber and an air inlet chamber on its inner wall. A bidirectional motor is fixedly connected to the inner wall of the air outlet chamber, and a rotating shaft is fixedly connected to the output end of the bidirectional motor. A reaming drill is fixedly connected to the bottom end of the rotating shaft, and a fan blade is fixedly connected to the top end of the rotating shaft. A filter box is fixedly connected to the outer wall of the conical cylinder, and the filter box is connected to the air inlet chamber. In this utility model, by setting up the air blowing and chip suction mechanism, large pieces of waste material generated during reaming can be blown away from the flange, preventing large pieces of waste material from remaining on the flange and affecting the reaming process, and preventing waste material from scratching the processed surface. The chip suction hood sucks up smaller pieces of waste material, reducing the dust content in the workshop air.

The utility model discloses a construction engineering garbage crusher, and relates to the technical field of construction. The construction engineering garbage crusher comprises a rack, a crushing box is arranged at the top of the rack, a feeding box is fixedly connected to the outer wall of the top of the crushing box, a discharging box is fixedly connected to the outer wall of the bottom of the rack, two crushing rollers are rotationally connected to the inner wall of the crushing box, and the two crushing rollers are meshed with each other; the smashing rollers are rotationally connected with the smashing box through rotating shafts, one ends of the two smashing rollers are fixedly connected with gears, and the two gears are meshed. The guide plates are arranged in the discharging box in an up-and-down alternating and inclined mode, the falling speed of construction waste can be effectively reduced, and a large amount of dust generated by direct falling is greatly reduced; meanwhile, a fan of the dust suction device runs to form negative pressure, dust in the crushing box is sucked into the purification box, water is supplied by the water tank, water is sprayed by the spray head to enable the dust to fall, solid particles are intercepted by the filter screen, and the dust content of the working environment and exhausted air is remarkably reduced.

This utility model discloses a dust control device for a paper machine workshop in bamboo fiber-based base paper production. The device includes a dust cover, which comprises a rectangular support frame erected around the outside of the paper machine and a dustproof panel covering the support frame. A gantry is located at the front end of the support frame, and a curtain is hung on the gantry. At least two suction hoods are located near the paper machine's winding area at the front end of the dust cover. These suction hoods are connected to suction pipes, which are connected to a negative pressure generator and, via a dust exhaust pipe, to a raw material dust treatment station outside the workshop. The dust cover prevents raw material dust from being scattered during the drying cylinder and winding process. Simultaneously, suction hoods are installed in the winding area to remove dust from the winding area using negative pressure, reducing the risk of dust being trapped in the base paper, decreasing the dust content in the workshop, and preventing excessive dust levels that could harm the health of workers.

This utility model discloses a road surface breaking device for tunnel construction using lighting testing, including a frame and a rotating platform. A hydraulic arm is mounted on the front surface of the rotating platform, and a breaking cone is installed at one end of the hydraulic arm. A dust collection device is fixedly connected to the front surface of the rotating platform, and a pipe is fixedly connected to the input end of the dust collection device. A protective baffle is provided at the end of the hydraulic arm near the breaking cone. This utility model, through the protective baffle on the hydraulic arm, combined with the front baffle and an adjustable-height transparent baffle, can block stones during the breaking process, preventing stone splashes from injuring the operator and improving the safety of the device during use. Furthermore, the protective baffle can initially limit dust during the breaking process, preventing dust from instantly spreading in the tunnel. Combined with the dust collection device, this effectively reduces the dust content in the tunnel, preventing excessive dust from affecting visibility and the operator's health.

The utility model relates to the technical field of industrial flue gas treatment, in particular to a multifunctional flue gas flow equalizing device which comprises a flow equalizing unit, a dust removal unit and a cooling unit, and the flow equalizing unit comprises a pore plate I, a pore plate II, a flow equalizing pipe, an upper sealing plate, a side sealing plate, a lower sealing plate, a connecting flange, reinforcing ribs and supporting legs; the dust removal unit comprises a dust collection hopper and a dust discharge valve; the cooling unit comprises an air inlet valve, an air inlet cavity, an air exhaust valve and an air exhaust cavity. According to the scheme, the flow equalizing pipe structure with the small air inlet diameter and the large air outlet diameter is adopted, the flow equalizing distribution effect of inlet smoke is improved, the uniform diffusion process of the smoke at the outlet of the device is accelerated, and the uniformity of the flow field of the smoke at the inlet of the fluoroplastic heat exchanger is effectively guaranteed; and the dust in the flue gas is captured, intercepted and collected, and the captured dust is discharged out of the device regularly through the automatic dust discharging system, so that the dust content of the flue gas passing through the device is effectively reduced, and the abrasion risk of the fluoroplastic heat exchange tube is reduced.

The utility model relates to a cloth inspecting clean room for inspecting electronic glass fiber cloth, which comprises a fence, a cloth inspecting machine supporting seat, a top cover and a fan, a door opening, a cloth inlet and a cloth outlet are arranged on the fence, a self-closing door is mounted in the door opening, a first flexible transparent baffle is mounted on the inner side of the fence at the cloth inlet, and a second flexible transparent baffle is mounted on the outer side of the fence at the cloth outlet; the cloth inspecting machine supporting seat is installed in the fence, a layer of anti-static ventilation bottom plate is laid at the top end of the cloth inspecting machine supporting seat, and an air return opening is formed in the cloth inspecting machine supporting seat. The top cover is installed at the top end of the fence and provided with an air supply outlet. An air inlet of the fan is communicated with the air return port through an air return pipe network, an air outlet of the fan is communicated with the air supply port through an air supply pipe network, and an efficient filter is installed in the air supply pipe network. The cloth inspecting machine has the advantages that air containing a large amount of dust in a workshop is prevented from polluting electronic glass fiber cloth on the cloth inspecting machine, and the amount of dust attached to the electronic glass fiber cloth is reduced.