46 results about "Mixed dust" patented technology

The invention relates to the field of photovoltaic panel cleaning, in particular to an array type photovoltaic equipment intelligent cleaning robot which comprises a robot body, a walking mechanism and a cleaning mechanism, the walking mechanism is arranged at the bottom of the robot body, and the walking mechanism is used for driving equipment to move on the surface of an array type photovoltaic panel. The cleaning mechanism comprises a cleaning execution assembly and an adjusting mechanism. The adjusting mechanism is used for connecting the robot body with the cleaning execution assembly, and the adjusting mechanism can dynamically adjust the attaching state of the cleaning execution assembly and the surface of the photovoltaic panel according to the inclination angle of the photovoltaic panel; and the cleaning execution assembly is used for cleaning the surface of the photovoltaic panel and can clean stubborn substances. According to the photovoltaic panel cleaning device, stubborn stains on the surface of a photovoltaic panel can be cleaned, dust mixed in cleaning liquid can be reduced, the cleaning workload can be effectively reduced, the stains attached to the main cleaning rolling brush can be effectively reduced, and the cleaning effect of the main cleaning rolling brush can be effectively guaranteed.

The utility model discloses an impurity removal device for concentrated feed production, and particularly relates to the technical field of feed production, the impurity removal device comprises a filter box, a stirring box is arranged at the top of the filter box, a feeding pipe is arranged at the top of the stirring box, and a dust removal mechanism is arranged in the stirring box. The dust removal mechanism comprises a baffle arranged in the stirring box, a containing groove is formed in the surface of the baffle, a filter screen is arranged in the containing groove, a first air suction hopper is arranged on one side of the filter screen, an air suction pipe is arranged on one side of the first air suction hopper, and the cross section of the air suction pipe is in a T shape. Wherein a connecting pipe is arranged at one end of the air suction pipe. According to the feed filtering device, redundant impurities and mixed dust in feed can be removed, so that the using effect is greatly improved, the arc-shaped filtering plate can be conveniently cleaned, and blockage is prevented.

The utility model relates to the field of constructional engineering, and discloses a building outer wall punching device for constructional engineering, which comprises a protective cover for preventing articles from splashing, a dust falling component for falling dust is arranged at the top of the protective cover, and a storage box for storing impurities is arranged at the bottom of the protective cover. And a clamping plate assembly used for being connected with the punching body is arranged in one end of the protective cover, so that the building outer wall punching device for building engineering is provided, and the problems that sprayed water can be mixed with dust to generate muddy water, the muddy water moves from the high position to the low position along the wall face, the building attractiveness is affected, and the safety risk that the muddy water drips to pedestrians is solved.

The utility model discloses a ventilation file cabinet for medical record information data storage. The ventilation file cabinet comprises a cabinet body, the front side of the cabinet body is movably connected with a door plate, the inner wall of the cabinet body is fixedly connected with a placing plate, the two sides of the placing plate are both provided with ventilation openings, and the top of the cabinet body is fixedly connected with a protection cover. External airflow is sucked into the protection cover through the suction fan, when the airflow passes through the filter screen plate, doped dust is filtered out by the filter screen plate, when the airflow is in contact with the heating wire, the airflow is heated, the heated airflow enters the air injection plate, the air injection plate conveys the airflow into the cabinet body, the airflow penetrates through the ventilation opening, and the airflow enters the cabinet body through the ventilation opening. The file cabinet has the advantages that the cabinet body can be filled with hot air, the hot air has a certain drying effect, stored data can be protected against moisture, ventilation, dehumidification and mildew prevention are achieved, moisture generated in the file cabinet can be removed in time, the entering air flow can prevent the interior of the file cabinet from mildewing, and the storage safety of medical record information data is improved.

The utility model relates to the technical field of river channel cleaning, in particular to rice seed screening equipment which comprises a screening box, a plurality of supporting columns are evenly and fixedly installed at the bottom end of the screening box, a screening assembly is arranged in the screening box, and the screening assembly comprises a screening plate obliquely arranged in the screening box. And a plurality of filtering holes are uniformly formed in the screening plate. Preliminary screening can be conducted on rice seeds through the filtering holes in the screening plate, the vibration motor in the working state can drive the screening plate to vibrate in the screening box, the screening efficiency can be improved, and after mixed dust and the rice seeds of empty and immature rice fall into the discharging hopper, the dust suction pump is started at the moment, and the screening efficiency is improved. At the moment, a material suction pipe communicated with the feeding pipe is matched with a material suction head, so that dust with light weight and empty and immature rice can be sucked into a dust suction pump and further discharged through a blow-off pipe at an outlet of the dust suction pump, the rice seeds can be further screened, and the screening quality of the rice seeds can be guaranteed.

The utility model discloses a mixed dust removal treatment system which comprises a local workshop treatment system, a local fixed suction hood treatment system, a local movable suction hood treatment system and a secondary dust removal system, and the secondary dust removal system comprises an air return pipeline, a dust remover D, an air supply fan and an air supply pipeline. One end of the air return pipeline is an air return port located in the plant, the other end of the air return pipeline is communicated with the air inlet end of the dust remover, an electric valve D is arranged at the air return port, the exhaust end of the dust remover is communicated with the air inlet end of the air supply fan, and the exhaust end of the air supply fan is communicated with one end of the air supply pipeline. And the other end of the air supply pipeline is branched into an air supply branch pipe and an air exhaust branch pipe towards the inside and the outside of the plant respectively. By the adoption of the mixed dust removal treatment system, a reasonable treatment mode can be selected according to needs, and the problems that during dust removal treatment of a plant space, local captured smoke overflows, and overall treatment investment and energy consumption are high are solved.

The utility model discloses traditional Chinese medicine decoction piece impurity removing equipment which comprises an impurity removing box, a feeding hopper is arranged on the side surface of the impurity removing box, a driving motor is arranged on the other side face of the impurity removing box, and a driving roller is installed at the output end of the driving motor. When the traditional Chinese medicine decoction piece impurity removing device is used, traditional Chinese medicine decoction pieces are put into the impurity removing box from the feeding hopper, then the driving motor and the exhaust fan are started, the driving motor drives the driving rod through the driving roller, then the traditional Chinese medicine decoction pieces are stirred, dust and disintegrating slag mixed in the traditional Chinese medicine decoction pieces fly into the impurity removing box, and then the exhaust fan rotates to generate suction force; under the action of the coarse filter screen, the traditional Chinese medicine decoction pieces large in size are detained in the impurity removal box, and mixed dust and slag enter the dust collection cover through the coarse filter screen, enter the dust collection box through the dust collection pipe and are detained in the dust collection box under the action of the filter bag, so that impurity removal and collection of the dust and the slag are completed, and the environment and the health of workers are prevented from being affected; and the practicability of the device is greatly improved.

The invention belongs to the technical field of medical animal model construction, and discloses a coal silicosis mouse model construction method and application. According to the method, a coal-silicon mixed dust suspension containing 15%, 25% and 50% of free silicon dioxide is prepared, and the concentration is 50 mg / ml; the method comprises the following steps: hanging an anesthetized healthy adult (6-8 weeks) C57BL / 6N male mouse on a fixing device, instilling 50 microliters of coal and silicon mixed dust suspension once per week by adopting an oropharynx inhalation method for 4 weeks continuously, and establishing a coal silicosis model; applying equal-volume normal saline to the control group; respectively observing for 28 days, 56 days and 112 days, taking mouse lung tissues for pathological analysis and fibrosis index detection, and evaluating the model preparation effect. The method is simple to operate and low in cost, and the established coal silica dust mouse model is stable, efficient, repeatable and noninvasive.

The utility model discloses an antistatic polyester mixed conductive fiber dedusting filter bag, which relates to the technical field of dedusting filter bags, and comprises a filter bag body, the top end of the filter bag body is fixedly connected with a lantern ring, the outer wall of the lantern ring is provided with an outer groove, the inner wall of the lantern ring is movably connected with a spring ring, the inner wall of the spring ring is provided with an inner groove, and the inner groove is communicated with the inner groove. An inner groove is formed in the filter bag body, four arc strips are arranged in the inner groove, a framework is embedded in the filter bag body, a conductive fiber layer is fixedly connected to the outer wall of the filter bag body, and a movable strip is arranged outside the conductive fiber layer. By arranging a series of structures, the probability that the spring ring is too loose or too tight and is not installed in place is reduced, so that the adverse effect on the filtering effect of the filter bag is reduced, the area of the surface of the filter bag for adsorbing dust through static electricity is reduced, and the probability that the dust is adsorbed on the surface of the filter bag is reduced; therefore, the difficulty in cleaning dust on the outer surface of the filter bag is reduced.

The invention discloses a preparation method of dust for testing the dynamic filtering performance of a filter material. The method comprises the following steps: firstly, freeze-drying high-purity pseudo-boehmite (99.9% grade) at the temperature of 40 DEG C below zero to 15 DEG C below zero; performing graded grinding by adopting a planetary ball mill to obtain powder with three characteristic particle size distributions (D / D / D); a linear weighted proportioning model (target powder = a * D + b * D + c * D) is constructed based on an Excel VBA program, and + / -5% error control of measured data of mixed dust D, D and D and target working conditions (cement / thermal power / steel plant) is realized through nonlinear programming operation; finally, a V-shaped mixer is adopted for mixing for 20-40 min under the charging amount of 40%-60%, and the uniformity CV is smaller than or equal to 5%. The pore volume (0.3-0.8 cm / g), the particle density (2.3-2.8 g / cm) and the particle size distribution of the obtained dust for testing are similar to those of real industrial dust, a high-fidelity simulation environment can be provided for dynamic filtering performance testing of a filter material of a bag type dust collector, and the accuracy of dynamic dust removal efficiency evaluation of the filter material is remarkably improved.

The utility model relates to the technical field of turbine pulverizers, and discloses a turbine pulverizer capable of automatic dust removal, comprising a turbine pulverizer body, a discharge port being arranged on the front of the turbine pulverizer body, the discharge port being a part of the turbine pulverizer body, a material discharge assembly being arranged below the discharge port, the material discharge assembly comprising a closed bin, the closed bin being fixedly connected to the outer surface of the discharge port, a discharge pipe being fixedly connected below the closed bin, a filter cartridge being fixedly connected to the bottom of the inner surface of the closed bin, the filter cartridge being capable of allowing dust to pass through, while the crushed material will not pass through the filter cartridge, a toggle rod being fixedly connected to the inner surface of the filter cartridge, and a dust suction assembly being arranged on the right side of the material discharge assembly. The crushed material is discharged through the discharge port, and the material will first fall into the closed bin, and the dust mixed in the material can be sucked out by the dust suction assembly without sucking away the material itself, which has the function of facilitating dust removal.

The utility model discloses an interior decoration engineering dust treatment device which comprises a treatment bin, the outer wall of one side of the treatment bin is fixedly connected with a chipping dust collection bin, the inner wall of the chipping dust collection bin is fixedly connected with a bottom dust collection plate, and the top of the chipping dust collection bin is fixedly connected with two brush wheel supports. The outer portions of the two brush wheel supports are fixedly connected with two brush wheel motors, output shafts of the two brush wheel motors are connected with protective shells through couplings, the tops of the inner walls of the two protective shells are fixedly connected with electric telescopic rods, and the output ends of the two electric telescopic rods are fixedly connected with scraping plates. The indoor decoration engineering dust treatment device disclosed by the utility model has the effect of improving the dust treatment quality, the device can be used for respectively cleaning mixed dust during use, so that the use effect and the dust treatment effect of the device are improved, and the device is switched in real time as required during use, so that the practicability of the device is improved.

The utility model relates to the technical field of waste recovery, and discloses a refrigerator punching waste recovery device which comprises a smashing assembly. The crushing assembly comprises a shell, a crushing assembly and a crushing assembly, wherein a feeding hole is formed in the shell; the first motor is arranged on the shell; the first crushing roller is arranged at the output end of the first motor, and the first crushing roller is rotationally connected with the shell; when the screening device is used for screening, the output end of the second motor rotates to drive the connecting rod to rotate, the connecting rod rotates to drive the two cams to rotate, and the two cams rotate to drive the filter plate to swing, so that when crushed punching waste falls on the filter plate, the punching waste can be filtered out, and the screening efficiency is improved. And mixed dust is screened and falls into the second collecting frame through swinging of the filtering plate, the screened punching waste rolls to penetrate through the opening and falls into the first collecting frame when the filtering plate inclines, and the beneficial effect that the dust mixed in the smashed punching waste is conveniently screened is achieved.

The utility model relates to the technical field of exhaust device, and disclose a kind of exhaust device for agricultural machinery triangular belt oven. Including oven, the oven top surface is equipped with exhaust port, the exhaust port below is provided with air door, the oven is detachably installed with first air pipe by first bolt, the other end of the first air pipe is detachably installed with filter screen by second bolt, the other side of the filter screen is detachably installed with second air pipe, the side of the second air pipe away from filter screen is fixedly connected with centrifugal fan, the end of the centrifugal fan is provided with air outlet, by setting first bolt and second bolt, so that air pipe can be disassembled at any time to clean and maintain, by setting filter screen with a plurality of filter holes, the mixed dust and particulate matter in exhaust gas are prevented from entering fan, causing fan wear, prolonging the service life of the equipment, ensuring production efficiency and stability.

The application relates to the field of safety equipment for producing pyrotechnics, and discloses an intrinsic safety type sweeping equipment suitable for a high-risk scene of producing pyrotechnics, which comprises an intrinsic safety type structure assembly, a gas-liquid mixed dust catching assembly, a multi-stage separation and filtering assembly and a circulating water purification assembly which are integrally arranged with the intrinsic safety type structure assembly, and is further provided with a real-time risk monitoring system, an explosion-proof device and a telescopic flexible dust collecting device. The gas-liquid mixed dust catching assembly realizes frictionless dust catching, the multi-stage separation and filtering assembly realizes gas-liquid separation, the circulating water purification assembly realizes closed-loop water circulation, the monitoring system realizes real-time parameter acquisition and threshold value early warning, the explosion-proof device realizes linkage cooling and explosion suppression, and the flexible dust collecting device is extended to a high place and a complex area for cleaning. The application realizes intrinsic safety of the equipment, realizes automatic cleaning of energetic powders, greatly reduces the labor intensity, realizes omnibearing and dead angle-free cleaning of a production area, and is completely suitable for the high-risk scene of producing pyrotechnics.

The utility model relates to the technical field of gas recovery devices for pneumatic conveying, and solves the problems that only a cyclone dust collector is used for rough dust removal, the dust removal effect is poor, dust particles mixed in gas cannot be effectively removed, and the cleaning effect of the scheme on the gas recovered by the gas recovery device is poor. The gas recovery device comprises a material receiving bin, the side face of the material receiving bin is in through connection with a feeding pipe, the material receiving bin is in through connection with a communicating pipe, one end of the communicating pipe is provided with an air pump, one end of the air pump is provided with an exhaust pipe through a stop valve, and the top face of the exhaust pipe is provided with a filtering assembly. And the filtering assembly comprises a filtering cylinder connected to the top end of the exhaust pipe in a penetrating mode, water is arranged in the filtering cylinder, a threaded pipe used for filling the water is arranged on the top face of the filtering cylinder, the surface of the threaded pipe is in threaded connection with a sealing cover, and the top face of the filtering cylinder is connected with a recycling pipe in a penetrating mode.

The invention discloses an asphalt concrete mixing plant with a circulating intermittent dust removal function, and particularly relates to the technical field of asphalt concrete mixing, the equipment comprises an asphalt concrete mixing processing table, a cleaning mechanism used for treating dust is arranged at the bottom of a dust remover, and the dust remover is arranged in the asphalt concrete mixing processing table through the cleaning mechanism. When dust in the dust remover needs to be cleaned, a first driving motor is started to drive a first connecting rod to rotate, two sets of scraping plates can move inwards at the same time through rotation of a threaded rod, the dust in the dust remover can be cleaned into a collecting box through a dust outlet pipe through inward movement of the scraping plates, and a water pipe is connected with a water inlet, so that the dust in the dust remover can be conveniently cleaned. The water pump is started to convey water into the connecting pipe from the water inlet, water is sprayed through the spray head, and meanwhile, the stirring rod rotates, so that the water and the dust can be mixed together, the mixed dust can be discharged through the water outlet, and the situation that the dust is accumulated in the dust remover, and the subsequent dust removal effect is affected is avoided.

The utility model discloses an antistatic polyester mixed conductive fiber dust removal filter bag, including dust removal filter bag body and mounting plate, the surface of dust removal filter bag body is fixedly equipped with mounting ring, the top of mounting ring is equipped with spacing groove, the top of mounting plate is equipped with mounting groove through, the inside of mounting plate is equipped with sliding component, and the sliding component is equipped with the spacing groove through the spacing groove. A fixing plate is arranged at the top of the mounting plate through a sliding assembly, a spring is fixedly mounted at the bottom of the fixing plate, a moving block is arranged at the bottom end of the spring, an auxiliary assembly is arranged at the top of the moving block, a limiting block is fixedly mounted at the bottom of the moving block, and a flapping assembly is arranged in the mounting plate. According to the dust removal filter bag disclosed by the invention, the dust removal filter bag body is prevented from being disassembled and assembled by adopting a bolt mode, so that the dust removal filter bag body can be disassembled and assembled more conveniently, the time required for disassembling and assembling is shortened, and the maintenance efficiency of the filter bag is improved.

The utility model relates to gas recovery technical field discloses a kind of coal mine gas extraction gas purification and recovery equipment, including high-pressure delivery pump, suction pipe, gas pipe, purification tank, mixing mechanism, drying shell, separation tank, gas storage tank, support plate and zeolite molecular sieve membrane, suction end of high-pressure delivery pump is connected with suction pipe, the gas outlet end of high-pressure delivery pump is connected with gas pipe, gas pipe is inserted to the inside bottom end of purification tank, the left side of drying shell is equipped with the first conduit connected with purification tank, the right side of drying shell is equipped with the second conduit connected with separation tank, separation tank is fixed with support plate, the front side of support plate is fixed with zeolite molecular sieve membrane, the left side of gas storage tank is equipped with the air inlet pipe connected with separation tank, second valve is installed on air inlet pipe.The utility model is convenient to gas extraction storage, and can remove mixed dust, sulfur dioxide, carbon dioxide, nitrogen dioxide and other impurities in gas, so that gas purity is higher.

The utility model relates to the technical field of finished product screen dust removal, and discloses a finished product screen dust removal automatic control system which comprises a dust removal box, a vertical frame is fixedly connected to the surface of the dust removal box, a collecting hopper is fixedly connected to the bottom end of the dust removal box, and a discharging opening is fixedly formed in the bottom end of the collecting hopper. And the surface of the dust removal box is fixedly connected with an input interface. The input connector is connected with the discharging end of the finished product screen, gas can be mixed with dust to be discharged into the dust removal box, the dust can be filtered by the filter bag, and the remaining clean gas can penetrate through the filter bag and penetrate through the partition plate, so that the clean gas is discharged into the inner top of the dust removal box, and the dust removal efficiency is improved. The concentration meter can measure the concentration of filtered clean gas in the dust removal box, after the concentration reaches the standard, the fan is started to form negative pressure above the partition plate, so that the clean gas is discharged from the fan, and meanwhile, the rotating speed of the fan can be adjusted through the speedometer, so that the discharge rate of the clean gas can be adjusted.

The invention discloses a system for waste heat recovery and dust removal in the blast furnace tapping process, which comprises a dust collection cover arranged above a blast furnace tapping hole, an ejector, a condenser, a heat exchanger and a flash tank, and dust-containing steam is collected through the dust collection cover in the blast furnace tapping process and is introduced into the ejector as secondary flow. The high-pressure steam as a primary flow also enters the ejector and provides a secondary flow force. And the mixed dust-containing steam is cooled and condensed by cooling water in the condenser, then is introduced into the flash tank, and is evaporated together with the slag flushing water under low pressure. One part of the generated steam is used for external steam supply or heat supply, and the other part of the generated steam is compressed by a compressor to serve as primary flow of an ejector. Therefore, external steam does not need to be introduced, and the use amount of the steam is saved.

The utility model discloses a spectrograph dust collecting device which comprises a collecting cylinder used for storing adsorption liquid for adsorbing dust; one end of the connecting channel is connected with the gas outlet tail end of the spectrograph, and the other end of the connecting channel is introduced below the liquid level in the collecting cylinder; and an exhaust hole is also formed in the collecting barrel. According to the technical scheme, by arranging the collecting barrel and the connecting channel, generated waste gas (argon) mixed with dust is introduced into the adsorption liquid in the collecting barrel to adsorb the mixed dust in the process of experimental detection by using the spectrograph, and argon escapes from the adsorption liquid, so that dust collection is conveniently realized, and the detection efficiency is improved. According to the technical scheme, the problem that dust diffuses to the surrounding and is inhaled by workers to harm the body health of the workers can be avoided, and in addition, the risk that the dust falls onto the circuit board to affect the normal work of the equipment can be reduced.

The invention discloses a multi-stage wet dust removal process. In the field of particleboard production, a space for spraying water mist and water splash is formed below the spray pipe system. After the tail smoke is discharged into the dust removal tower through the smoke inlet, the tail smoke upwardly offsets the water mist and / or the water splash. The water-mixed dust particles settle based on their own weight and / or are knocked down by the water splash. The space filled with water mist and water splash simultaneously improves the water mixing rate and sedimentation rate of the dust particles. Then, electrostatic dust removal is performed in the mist-filled space. The dust particles in the moist dust space are quickly and fully electrified, further improving the dust removal rate. The upward direction of the exhaust gas after electrostatic dust removal intersects with the airflow direction of multiple horizontal air pipes. The airflow of the horizontal air pipes is suitable for heat exchange with the exhaust gas. The exhaust gas is condensed and dusted before being discharged. The dust removal rate is improved while avoiding the derivation of mist flow from the top exhaust chimney.

The utility model relates to the technical field of brake disc grinding, in particular to a brake disc grinding positioning device which comprises a machine frame, a grinding machine body and a positioning clamp and further comprises a dust collection assembly which comprises a supporting frame, a dust collection cover, a guide-in pipe, a dust collection water tank, a purification water tank, a connecting pipe, an activated carbon block, a guide-out pipeline, an atomization nozzle, a suction fan and an output component. And dust in air mixed with dust generated by polishing of the polishing machine body can be adsorbed and cleaned through water in the dust collection water tank and atomized water sprayed out of the atomization spray head, and the situation that the surrounding machining environment is affected by flying dust is avoided.

The utility model discloses a crushing device for circuit board recovery, which comprises a crushing box, a dust purification device is fixedly mounted at the top end of the crushing box, a circuit board crushing device is mounted in the upper part of the crushing box, and a powder conveying device is mounted in the lower part of the crushing box. By installing the dust purification device, when waste circuit boards enter the crushing box through the feeding plate, a large amount of dust is raised, the raised dust is sucked in through the suction fan, the dust can be filtered through the arranged filter screen, mixed dust particles are reduced, the filtered dust particles are collected in the collecting frame, and therefore the dust purification effect is improved. According to the circuit board crushing device, the dust can be regularly pumped out to be cleaned, so that air in the crushing box is relieved, a large amount of dust cannot be accompanied when discharged circuit board powder is discharged, recycling is facilitated, the surrounding air quality is improved, in addition, the filter screen can be pumped out to be replaced or cleaned, and the circuit board powder can be continuously conveyed out from the discharging pipe through conveying; and manual recovery is not needed.

The wet polishing, grinding and dust collecting all-in-one machine with the anti-explosion swirling flow type structure comprises a rack, a cyclone mechanism and a spraying mechanism, the rack is provided with a grinding cavity and a dirt collecting cavity, the cyclone mechanism is provided with an exhaust fan, a cyclone cavity and a cyclone wheel, the spraying mechanism is provided with a cyclone spraying pipe and an upper spraying pipe, a dust receiving frame is arranged in the grinding cavity, and the dust receiving frame is arranged in the dirt collecting cavity. The exhaust fan enables air in the polishing cavity to flow into the cyclone cavity, the cyclone wheel forms rotating airflow in the cyclone cavity, the cyclone spraying pipe sprays water in the cyclone cavity, and the upper spraying pipe sprays water in the polishing cavity. The grinding cavity, the dirt collecting cavity, the cyclone mechanism and the spraying mechanism are arranged on the rack, large-particle dust is collected in the dust receiving frame, part of small-particle flying dust is mixed with water and then enters the cyclone cavity, part of the small-particle flying dust directly enters the cyclone cavity, and a water-powder mixture enters the cyclone cavity and then flows into the dirt collecting cavity; dust is mixed with water after entering the cyclone cavity and is driven by the cyclone wheel to rotate and rise to be mixed with water, dust is recycled in a multi-stage combined mode, the dust removal effect is good, efficiency is high, and the operation cost is low.

The utility model belongs to the technical field of crushing machinery, and particularly relates to a vertical shaft crusher. The top end of the crusher shell is communicated with the negative pressure air pipe, the outlet of the negative pressure air pipe is connected with the air inlet of the fine sand separator, the air outlet of the fine sand separator is connected with the dust remover, and the bottom end of the fine sand separator is provided with the discharging port. After dust is subjected to powder separation through the fine sand separator, fine sand is mixed with materials at a discharging port of the crusher, the dust enters the dust remover, the fine sand in the dust is separated and recycled, the content of the fine sand in finished sand is guaranteed, crushing, dust removal and powder separation are conducted synchronously, and the crushed materials can directly enter a follow-up vibrating screen to be screened; in addition, the fine sand separator for powder selection and the dust removal structure are arranged together, a power source does not need to be independently provided for each stage, and power is greatly saved.

The invention provides a triggering type protein foam dust fixing method and equipment for coal mine heading face dust. The equipment comprises a liquid storage tank, a conveying pump and an atomizing nozzle, and an aqueous solution containing amphiphilic protein molecules is prepared; filling the aqueous solution into a liquid storage tank; a conveying pump is started to pump the aqueous solution into an atomizing nozzle, then the aqueous solution is sprayed into a generating chamber to form liquid drops, and dust-containing airflow enters the generating chamber from an air inlet; the dust and the liquid drops enter the mixing area to be mixed, the dust makes contact with the liquid drops, conformational change occurs, and amphiphilic protein molecules spontaneously migrate to a gas-liquid interface of the liquid drops; and the dust and the liquid drops enter a forming cavity, a plurality of amphiphilic protein molecules form a bubble structure to wrap the dust, and finally the protein-based aerogel foam for permanently fixing the dust is generated. According to the invention, liquid drops of an aqueous solution can be foamed only after being in contact with dust, the stability is good, the generated foam is good in durability, in-situ permanent fixed sealing of the dust is realized, and secondary dissipation of the dust is effectively prevented.

The utility model relates to the technical field of calcium carbide furnace paste adding equipment, in particular to an automatic calcium carbide furnace paste adding device which comprises a frame body, a conveying belt is arranged in the frame body, a motor is arranged on the left side of the frame body, and a hopper is arranged on the right side of the frame body and above the conveying starting end of the conveying belt. Multiple partition plates distributed at equal intervals are arranged on the conveying end face of the conveying belt. A plurality of supporting legs are arranged on the two sides of the frame body, the supporting legs located on the same side of the frame body are connected with horizontally-arranged supporting rods, a collecting frame is arranged on the supporting rods on the two sides of the frame body in a sliding mode, a material guiding plate which is obliquely arranged downwards from left to right is arranged at the lower end of the left side of the frame body, and the lower end of the material guiding plate faces the collecting frame. And the right end of the material guide plate is arranged above the collecting frame, so that the problem that the falling electrode paste is mixed with dust on the ground and is difficult to recycle due to the lack of a corresponding collecting device because the electrode paste is extremely easy to fall off due to the gravity of the electrode paste in the conveying process along with the conveying belt at the lower end is solved.

The utility model discloses a wet type polishing, grinding and dust collecting all-in-one machine with an anti-explosion swirling flow type structure, which comprises a rack, a cyclone mechanism and a spraying mechanism, the rack is provided with a grinding cavity and a dirt collecting cavity, the cyclone mechanism is provided with an exhaust fan, a cyclone cavity and a cyclone wheel, the spraying mechanism is provided with a cyclone spraying pipe and an upper spraying pipe, a dust receiving frame is arranged in the grinding cavity, and the dust receiving frame is provided with a dust outlet. The exhaust fan enables air in the polishing cavity to flow into the cyclone cavity, the cyclone wheel forms rotating airflow in the cyclone cavity, the cyclone spraying pipe sprays water in the cyclone cavity, and the upper spraying pipe sprays water in the polishing cavity. The grinding cavity, the dirt collecting cavity, the cyclone mechanism and the spraying mechanism are arranged on the rack, large-particle dust is collected in the dust receiving frame, part of small-particle flying dust is mixed with water and then enters the cyclone cavity, part of the small-particle flying dust directly enters the cyclone cavity, and a water-powder mixture enters the cyclone cavity and then flows into the dirt collecting cavity; dust is mixed with water after entering the cyclone cavity and is driven by the cyclone wheel to rotate and rise to be mixed with water, dust is recycled in a multi-stage combined mode, the dust removal effect is good, and efficiency is high.