115results about How to "Efficient purification" patented technology

This invention relates to the field of wastewater treatment technology, and in particular to a wastewater purification and reuse device based on a membrane bioreactor. Addressing the limited removal efficiency of pollutants adhering to membrane elements in existing technologies, this invention provides a wastewater purification and reuse device based on a membrane bioreactor. The device includes a treatment tank containing a membrane bioreactor assembly. The assembly includes an assembly frame with multiple membrane elements mounted on it. Scrapers that cooperate with the membrane elements are located on both sides of a horizontal plate. A cleaning assembly also includes a vertically movable frame. When the frame moves downwards, the horizontal plate moves downwards, and the scrapers clean the outer surface of the membrane elements downwards. A movable scraper is located on a support, and a collection box is located on one side of the support. When the scraper moves to one side, the collection box opens. By directly scraping away impurities adhering to the outer surface of the membrane elements, suspended solids, colloidal particles, microbial flocs, and other pollutants on the membrane surface can be removed quickly and effectively.

The invention discloses microcapsule self-regeneration-based long-acting formaldehyde-removing cement and a preparation method thereof, and belongs to the field of building materials and environmental functional materials. The material is composed of Portland cement clinker and a functional composite additive, wherein the additive comprises Zn < 2 + > modified zeolite, a manganese-based catalyst, a pH-responsive sustained-release microcapsule and alpha-semi-hydrated gypsum. According to the invention, through the cooperation of zeolite selective adsorption, non-photocatalytic oxidation of the manganese-based catalyst in an alkaline environment and pH-triggered microcapsule self-regeneration, an adsorption-catalysis-regeneration function closed loop is formed, efficient and lasting removal of formaldehyde under a dark condition is realized, and the mechanical properties of a cement matrix are not damaged. According to the preparation method, the functional components are pre-compounded and then co-ground with the cement clinker, the process is simple, and the preparation method is suitable for industrial production.

This invention belongs to the field of wet electronic chemicals technology, specifically relating to a method for preparing electronic-grade hydrogen peroxide. The method includes the following steps: adjusting the concentration of raw hydrogen peroxide, and then filtering it sequentially through a reverse osmosis membrane, a modified cation exchange resin, an anion exchange resin, and a mixed ion exchange resin to obtain electronic-grade hydrogen peroxide. The modified cation exchange resin used is modified based on conventional cation exchange resin through pore expansion and grafting, optimizing the spatial matching of pore structure and functional sites. This achieves passivation of metal ions, enhanced adsorption capacity, and improved oxidation resistance, as well as a deep synergistic effect of these three effects. Ultimately, it achieves the dual goals of efficient purification and stable operation of the resin in the hydrogen peroxide system. The resulting electronic-grade hydrogen peroxide can reduce the content of single impurity metal ions to below 5 ppt, meeting the requirements of SEMI G5 standards, and can be directly applied to high-end manufacturing fields such as semiconductor wafer cleaning.

This invention relates to the field of water treatment, specifically to an iron-doped biomass resource-based water treatment catalyst, its preparation method, and its application. The preparation of the water treatment catalyst includes the following steps: Step 1, drying and dehydrating recovered pigeon manure; Step 2, finely sieving the dried pigeon manure; Step 3, heat-treating the purified pigeon manure in a muffle furnace to obtain resource-based biochar; Step 4, ball milling dopamine hydrochloride, ferric chloride hexahydrate, and resource-based biochar at a mass ratio of 1:(5-15):(80-100); Step 5, calcining the ball-milled material in a tube furnace at 850-950℃. The water treatment catalyst provided by this invention can rapidly reduce the antibiotic content in wastewater, while accelerating antibiotic removal under ammonia nitrogen conditions. It achieves long-term continuous purification during long-term reaction, exhibiting good stability and removal effect, and is beneficial for achieving low-cost treatment of agricultural waste and efficient purification of new pollutant wastewater.

The utility model discloses an integral dust removal system for a workshop, which relates to the technical field of dust removal and comprises a dust collection pipeline, a bag-type dust remover, an air compressor, an induced draft fan, a spray tower and an exhaust pipeline, the dust collection pipeline is connected into a plurality of stations, an air inlet of the bag-type dust remover is connected with the dust collection pipeline, and the air compressor is communicated with the bag-type dust remover through a pipeline. An air inlet of the induced draft fan is communicated with an air outlet of the bag-type dust collector through a pipeline, an air inlet of the spray tower is communicated with an outlet of the induced draft fan through a pipeline, and the exhaust pipeline is communicated with an air outlet in the top of the spray tower through a pipeline. According to the utility model, cloth bag dust removal and spray tower dust removal are carried out in sequence, high-efficiency dust removal and deep purification can be realized through graded purification, the ultra-low emission requirement is met, and gaseous pollutants are removed at the same time; the system stability is improved; and dust escape and secondary pollution are prevented. The included angle between the dust collection pipeline and the horizontal plane can prevent smoke dust from accumulating in the pipeline due to horizontal laying of the pipeline.

The utility model discloses a purification device for an air fryer, which relates to the technical field of purification and comprises a fryer shell, a fryer body is arranged in the fryer shell, a metal shell is fixedly mounted in the fryer shell, a motor is fixedly mounted in the metal shell, a driving shaft is fixedly mounted at the output tail end of the motor, and a fan is fixedly mounted at the output tail end of the driving shaft. A first fan blade is fixedly installed at the tail end of the driving shaft, an electric heating pipe is fixedly installed below the first fan blade, a purification mechanism is installed on the metal shell, an oil smoke treatment mechanism is connected to the purification mechanism, and the purification mechanism comprises a gas pipeline fixedly installed on the metal shell; the gas pipeline is connected with a fan and a purifier, and a transmission shaft is arranged between the driving shaft and the fan. According to the purification device for the air fryer, through cooperative use of the purification mechanism and the oil fume treatment mechanism, oil fume and harmful gas generated by the air fryer can be purified.

The utility model relates to a water circulation device and a fish tank, and aims to provide higher ornamental value while circulating filtration of water, the device comprises a container, a base, a suction part and a water feeding pipe, the bottom of the container is provided with a water outlet and a water feeding port, the suction part conveys the water at the bottom of the container to the upper part through the water feeding pipe, and circulating flow of the water is realized. A supporting piece is arranged at an opening of the container, plant landscaping or a filtering medium can be used for filtering and purifying a water body, meanwhile, nutrients are provided for aquatic plants, a mutualistic ecological system is formed, the base protects the container and accommodates the suction piece, the structure is simple, and maintenance is easy. And the design of the detachable butt joint piece facilitates cleaning and later maintenance.

The utility model provides a deep purification system for waste gas containing tobacco shred particles in a rolling and packaging dust removal room, which comprises a cyclone dust collector, a first centrifugal purification device and a second centrifugal purification device which are used for purifying the waste gas step by step, each of the first centrifugal purification device and the second centrifugal purification device comprises a water throwing nozzle for atomizing a liquid medium and a centrifugal impeller for gas-liquid separation, and the first centrifugal purification device is used for mixing waste gas with the atomized water medium and then performing gas-liquid separation to remove particles; and the second centrifugal purification device is used for mixing the waste gas with the atomized odor removal medium and then carrying out gas-liquid separation to remove odor. By means of the cyclone dust collector, the first centrifugal purification device and the second centrifugal purification device which are used for purifying waste gas step by step, step-by-step purification of particulate matter / dust and peculiar smell molecular substances in the waste gas is achieved, the waste gas can be efficiently purified, peculiar smell removing media can be saved, and the separated substances can be effectively classified and recycled.

The invention discloses an efficient hydrogen purification device suitable for an ultra-high-temperature working condition. The efficient hydrogen purification device comprises a pressure-bearing shell; the Getter material bed layer is arranged in the pressure bearing shell; the heating system is used for heating the Getter material bed layer, and the heating system is configured to maintain the operation temperature of the Getter material bed layer at 600 DEG C + / -10 DEG C; the invention further discloses an efficient hydrogen purification method suitable for the ultrahigh-temperature working condition. According to the invention, high-efficiency purification of hydrogen under high-temperature and high-pressure conditions is realized, the impurity content is obviously reduced, the service life of the device is prolonged, and reliable technical support is provided for industrial hydrogen purification.

This invention discloses a dual-mode synergistic composite photocatalyst, its preparation method, and its application in styrene-acrylic emulsion coating compositions, belonging to the field of architectural coating technology. The dual-mode synergistic composite photocatalyst possesses a TiO2@dense SiO2@mesoporous SiO2-MnO2-GQDs three-layer core-shell structure. The styrene-acrylic emulsion coating provided by this invention utilizes the aforementioned dual-mode synergistic composite photocatalyst, and innovatively employs a yellowing-resistant composition composed of hollow titanium dioxide-supported phenyltriazole particles, a sulfonic acid-grafted hindered amine light stabilizer, and nano-zinc oxide. This composition synergistically inhibits yellowing of the paint film through enhanced UV absorption and improved interfacial compatibility. The styrene-acrylic emulsion coating provided by this invention successfully solves the two major problems of traditional photocatalytic coatings: "purification depends on light" and "self-catalysis leads to yellowing of the paint film." It can efficiently degrade formaldehyde under both light and dark conditions and exhibits excellent yellowing resistance.

This utility model relates to the field of quartz sand processing technology, specifically to a quartz sand drying system. It includes a frame and a horizontal drum rotatably mounted on the frame. Several support rollers for supporting the horizontal drum are installed on the frame. A biomass hot air device is also included. Fixed covers are fitted onto the outer sides of both ends of the horizontal drum. A heat-conducting cylinder is coaxially installed inside the horizontal drum, with both ends mounted on the frame and extending through the two fixed covers. A drying space is formed between the heat-conducting cylinder and the horizontal drum. The air outlet of the biomass hot air device is connected to one end of the heat-conducting cylinder, and the other end of the heat-conducting cylinder is connected to an exhaust gas treatment device. A feed inlet is connected to the fixed cover near the air outlet of the biomass hot air device, and an outlet is provided on the fixed cover at the other end. Both the feed inlet and outlet are connected to the drying space, which is connected to the exhaust gas treatment device via an exhaust pipe. This quartz sand drying system has low drying costs and does not contaminate the quartz sand.

The utility model discloses an automatic smoke purifying and collecting device for metal processing and welding, which comprises a machine body, and a decomposition bin, an adsorption bin and a filtering bin which are uniformly arranged in the machine body through partition plates, and further comprises a smoke collecting component, the smoke collecting assembly comprises an L-shaped pipeline installed on the top of the machine body through a connecting base and a smoke sucking cover arranged at the bottom of one end of the L-shaped pipeline through a telescopic corrugated pipe. The filter box is arranged in the filter bin and below the exhaust hood; the adsorption box is arranged in the adsorption bin below the filtering bin; and the catalysis box is arranged in the decomposition bin below the adsorption bin. Through the arrangement of the L-shaped pipeline and the smoke sucking cover in the smoke collecting assembly, smoke generated in the welding process can be effectively sucked in, and diffusion of the smoke in the working environment is avoided. The servo motor drives the L-shaped pipeline to rotate, and flexible adjustment of the smoke suction hood is achieved through meshing of the driving gear and the gear ring.

The utility model relates to the technical field of automatic deslagging and filtering, and discloses an automatic deslagging and filtering device which comprises a filtering bin with a deslagging function, the bottom end of the filtering bin is fixedly connected with a deslagging pipe, the inner wall of the deslagging pipe is connected with a connecting frame through a supporting set, and the inner wall of the connecting frame is fixedly connected with an electric push rod. The driving end of the electric push rod is connected with a closing plate and a fixing cover for filtering through a transmission set, the bottom end of the fixing cover is fixedly connected to the top end of the filtering bin, the right side of the top end of the fixing cover is fixedly connected with a driving motor, and the driving end of the driving motor is connected with a first transmission frame and a second transmission frame through a bevel gear set. According to the utility model, two strands of mutually reverse spiral liquid flows are formed in the filtering bin, so that the liquid flows can effectively wrap and hold filtered materials, prevent blockage and wrap and hold the filtered materials, the device can conveniently carry out the discharging and filtering work, the cleaning operation is simplified, and the manual intervention is reduced.

The utility model relates to the technical field of plate waste water, and discloses zero-discharge plate waste water membrane separation environment-friendly treatment equipment which comprises a shell assembly, a membrane separation assembly and a membrane separation assembly, the shell assembly comprises a shell, and the top of the shell is communicated with water inlet pipes which are symmetrical to each other; the mixing assembly comprises a first rotating rod and a second rotating rod, and the first rotating rod and the second rotating rod are located on the inner side of the shell and rotationally connected with the shell; an operator respectively throws wastewater to be treated and treatment liquid into the shell through the water inlet pipe. A partition plate I divides a water body, a filter plate preliminarily intercepts particles in the water, then a rotating motor is started to drive a rotating rod I and a gear I to rotate, a gear II rotates through gear meshing transmission, and then a rotating rod II is driven to rotate; according to the meshing characteristic of the gear, the rotating rod I and the rotating rod II rotate reversely, so that the stirring rod forms bidirectional stirring on the water body, the mixing effect of the wastewater and the treatment liquid is enhanced, and the mixing efficiency and uniformity of the wastewater and the treatment liquid are improved.

The application discloses lignin carbon quantum dot fluorescent bamboo fiber, a preparation method and application thereof, and relates to the technical field of bamboo fiber, in particular to a lignin carbon quantum dot fluorescent bamboo fiber, a preparation method and application thereof. The preparation method of the lignin carbon quantum dot fluorescent bamboo fiber comprises the following steps: selecting a rough planed bamboo strip sample, drying the bamboo strip sample at 80-90 DEG C until the moisture content is less than 30%, and sequentially cleaning the surface of the bamboo strip sample by using anhydrous ethanol and acetone, and then preparing the bamboo strip sample; mixing choline chloride, oxalic acid and deionized water and stirring uniformly to prepare a delignification aqueous solution; and the like. The lignin carbon quantum dot fluorescent bamboo fiber, the preparation method and the application thereof separate and treat bamboo cells, obtain bamboo fibers with high strength, use alkali lignin as a carbon source, hydrogen peroxide as an oxidant, and a small amount of p-phenylenediamine as a nucleating agent, successfully prepare lignin carbon quantum dots with yellow-green fluorescent emission by using a hydrothermal method, and combine the lignin carbon quantum dots with the bamboo fibers to prepare carbon quantum dot fluorescent bamboo fibers with fluorescent properties, and the carbon quantum dot fluorescent bamboo fibers have certain application prospects in the fields of anti-fake marks and intelligent textiles.

The utility model relates to a multi-chamber body strip steel sanding line which comprises a dust removal unit, a sand blowing high-pressure fan unit and a sanding chamber body consisting of a plurality of sanding units and a high-pressure fan sand blowing dust removal chamber, the multiple sanding units are sequentially arranged in series in the advancing direction of a steel belt, and each sanding unit comprises a sanding chamber and a dust removal chamber communicated with the sanding chamber. The high-pressure fan sand blowing dust removal chamber is mounted on one side of the sanding unit and communicates with the interior of the sanding unit; the sand-blowing high-pressure fan unit is arranged on the high-pressure fan sand-blowing dust removal chamber and is used for blowing air into the high-pressure fan sand-blowing dust removal chamber; the dust removal unit is installed on the outer side of the sanding chamber body and used for removing dust. The utility model has the effects of reducing the usable area of a workshop, saving energy, reducing the emission of dust-containing waste gas and improving the environment of the workshop.

This invention relates to the field of water filtration equipment, and particularly to a rare-earth magnetic alloy scale inhibitor and descaling water treatment device with a multi-layer filtration structure. It includes a housing, and within the filtration chamber, a magnetic purification filtration module comprising a magnetized cylinder installed within the filtration chamber and having a filtration channel. The filtration channel is vertically arranged, and the magnetized cylinder has an outlet and a first inlet communicating with the filtration channel. A magnetic purification component is also provided within the filtration channel, spanning across the filtration channel so that water flowing towards the outlet must pass through the magnetic purification component. The multi-layer filtration module includes a filtration component installed between the inlet and the magnetized cylinder, the filtration component being arranged in a covering shape on the outer periphery of the magnetized cylinder, so that water flowing in from the inlet passes through the filtration component before reaching the filtration channel. Through the combination of a multi-layer filtration structure and a magnetic purification filtration structure, multi-layer filtration is achieved, effectively improving the filtration effect.

The invention discloses a preparation method and application of a degradable hydrogel solar evaporator with a surface microstructure, and relates to the technical field of interface evaporation materials. The invention aims to solve the problems that an existing solar evaporator is low in evaporation efficiency, difficult to recycle after alkaline wastewater treatment, easy to form solid wastes and lack of an in-situ degradation environment-friendly scheme. Functional groups capable of being subjected to hydrolysis reaction under alkaline conditions are introduced into a hydrogel network, and the evaporator with a specific geometric structure is constructed by utilizing a photocuring 3D printing technology, so that the evaporator keeps structural stability and high evaporation performance in a use stage, and can be degraded according to preset conditions in an alkaline environment; therefore, the evaporator can disappear controllably after being used. According to the method, the photocuring 3D printing technology is combined, accurate design of the macroscopic shape and the microstructure of the evaporator is achieved, the surface microstructure of the evaporator is one or more of a spherical structure, a prismatic table structure and a tree-shaped structure, and the evaporation rate can be increased.

The utility model discloses an oil mist purification device for a CNC (Computer Numerical Control) machining center, which relates to the technical field of CNC machines and comprises a purification chamber, a sliding plate, a mist inlet pipe, a cover plate, an oil mist purification mechanism, a fixed clamping plate, an HEPA (High Efficiency Particulate Air) filter screen, an activated carbon plate, a turbulent flow mechanism, a transverse reciprocating mechanism and a fan. Oil mist enters the purification chamber through the mist inlet pipe, oil drops are preliminarily separated through the oil mist purification mechanism, then airflow is disturbed through the flow disturbing mechanism, the purification efficiency is improved, fine particles are further filtered and peculiar smells are further adsorbed through the HEPA filter screen and the activated carbon plate, air inlet is optimized through the transverse reciprocating mechanism, and purified gas is exhausted through power provided by the draught fan. The device adopts a multi-purification structure, combines automatic cleaning and optimized air inlet design, is high in purification efficiency and convenient to maintain, and meets the oil mist purification requirement of the CNC machining center.

The air purification device for the pet box comprises a box body located on a box body and a box cover arranged on the top of the box body in a covering mode, a partition plate is arranged in the box body and divides the interior of the box body into an installation cavity and a reaction cavity used for containing biological enzyme mixed liquid, a power source and a vacuum pump are arranged in the installation cavity, and the power source and the vacuum pump are arranged in the reaction cavity. The vacuum pump is communicated with the interior of the box body through an exhaust pipe and communicated with the reaction cavity through an exhaust pipe, a plurality of exhaust holes communicated with the reaction cavity are formed in the box cover, and the vacuum pump extracts foul gas in the box body through the exhaust pipe and discharges the foul gas into the reaction cavity through the exhaust pipe. The biological enzyme mixed liquid in the reaction cavity decomposes pollutants in the foul gas, and the purified gas is discharged through the exhaust hole. According to the air purification device for the pet box, foul air in the box body is pumped out by the vacuum pump through the exhaust pipe, the foul air is discharged into the reaction cavity through the exhaust pipe, pollutants in the foul air are decomposed by biological enzyme mixed liquid in the reaction cavity, and purified air is discharged through the exhaust hole.

This invention belongs to the field of motor vehicle exhaust purification technology, specifically providing a low-precious-metal three-way catalyst for purifying exhaust gases from equivalent combustion natural gas engines, its preparation method, and its application. The catalyst is divided into a front zone and a rear zone with an axial length ratio of 1:1 to 1:3 along the exhaust gas flow direction. Both zones are equipped with a carrier and a double-layer catalyst coating; the lower layer is a Pd-based mixture, and the upper layer is a Pt-Rh-based mixture. The oxygen storage composite material is a combination of rare-earth composite oxides and cerium-zirconium-aluminum composite materials. All precious metals are prepared using an organic acid competitive adsorption method. The total CeO2 content of the catalyst is 100~130 g / L. This invention can achieve CO and NO purification with a low precious metal loading of ≤0.7063 g / L. X The system effectively purifies unburned CH4, significantly reducing the generation of byproduct NH3. The generation of NH3 in both fresh and aged states is stably controlled within 10 ppm. It does not require a supporting ammonia escape catalyst, and the preparation process is fully compatible with existing industrial catalyst production lines, making it suitable for industrial mass production and applications in both light and heavy-duty natural gas vehicles.

The invention discloses a pipeline type multi-stage biological deodorization device which comprises a bio-trickling filter structure section, a connecting device, a pre-wetting structure section and a fine treatment structure section, and the connecting height of the bio-trickling filter structure section and an odor output pipe can be adjusted through the bio-trickling filter structure section; the connecting device is arranged at the rear end of the top of the bio-trickling filter structure section; the pre-wetting structure section is arranged at the left moving end of the connecting device; the biological filtration fine treatment structure section is arranged at the right side moving end of the connecting device and can drive a center component in the top of the biological trickling filtration structure section to rotate and stir in a limiting manner, and the connecting device can drive the pre-wetting structure section and the biological filtration fine treatment structure section to synchronously expand and contract; the fillers in the left end and the right end of the top of the bio-trickling filter structure section are clamped and fixed; in conclusion, flexible adjustment, linkage and quick connection and disconnection of the structural sections are achieved through multiple assemblies, and the odor purification quality and the deodorization efficiency are high.

The utility model discloses an oil camphor tree essential oil production flue gas treatment device which comprises a gas inlet pipe, a middle treatment device and a gas outlet pipe, and the gas inlet pipe and the gas outlet pipe are connected to the two sides of the middle treatment device respectively. The intermediate treatment device comprises a box body, a spraying piece, a pushing shaft and a cleaning blade; the box body is connected with an air inlet pipe and an air outlet pipe; the spraying piece comprises a plurality of spraying heads, and the spraying heads are arranged at the top in the box body; a sewage tank with a U-shaped structure is arranged at the bottom of the box body; a sewage outlet is formed in the middle of the bottom of the sewage tank; the pushing shaft is rotationally connected with the box body, one side of the pushing shaft is arranged in the sewage tank, the cleaning blades are of a spiral structure, the two cleaning blades are symmetrically arranged on the two sides of the pushing shaft, a pushing motor is arranged outside the box body, and the pushing motor is connected with the pushing shaft. Through the design, flue gas can be effectively purified, and pollution of a production site is reduced. Due to the design, pollution discharge of the box body is facilitated, blockage is prevented, and long-time stable operation of the intermediate treatment device is guaranteed.

This invention relates to a magnetic Z-type photocatalyst and a method for the combined hydrodynamic cavitation photocatalytic degradation of antibiotics in wastewater while simultaneously generating heat. The technical solution employed is: utilizing a hydrodynamic cavitation system and employing a magnetic Z-type BiFeO... 3 / Bi 2 Fe 4 O 9 Photocatalysts synergistically degrade antibiotics in wastewater, while the hydraulic cavitation system generates significant heat during wastewater treatment, substantially increasing the water temperature. Simultaneously, Z-type BiFeO... 3 / Bi 2 Fe 4 O 9 Photocatalysts are magnetic, easy to recover, and highly active, making them better suited for degrading antibiotics in wastewater. This invention combines two advanced oxidation technologies, enabling them to efficiently and synergistically degrade organic wastewater. This results in low treatment costs, no secondary pollution, and significant resource conservation. It provides valuable evidence for the future large-scale, industrial-scale treatment of organic wastewater and heat generation using hydrocavitation combined with advanced oxidation technology.

The utility model relates to the technical field of chemical production equipment, and discloses calcium hydroxide production equipment for fine screening and impurity removal, which comprises a main tank body, a feeding hole, a waste outlet, an extension plate, a spring, a bracket, a motor, a conical blanking hopper, an impurity removal tank and a final discharging hopper. A primary sieve plate and a fine sieve plate are arranged in the main tank body, and a rotating rod is driven by a motor and drives a connecting disc and a guide blade to realize classified screening of materials; waste is discharged through the waste outlet. An extension plate is matched with a spring to flexibly connect the main tank body, and a vibration motor can be mounted to enhance the screening effect. An electromagnetic strip is arranged in the impurity removal tank to adsorb metal impurities, and attachments are removed through an air inlet connecting pipe. Finally, finished products are collected by the discharging hopper. The equipment is compact in structure, easy and convenient to operate and suitable for large-scale industrial production, the screening and impurity removing efficiency is remarkably improved, and the high-performance production requirement is met.

The utility model discloses an efficient adsorption mechanism of a gas purifier for laboratory decoration engineering, which comprises a gas inlet header pipe, a plurality of shunting branch pipes are movably arranged on one side of the gas inlet header pipe, a shunting plate is movably arranged on one sides of the shunting branch pipes, and a plurality of composite adsorption layers are movably arranged on one side of the shunting plate. The composite adsorption layers are in threaded connection, an air outlet cylinder is fixedly arranged on one side of each composite adsorption layer, a motor cylinder is fixedly arranged on the inner wall of each air outlet cylinder, a driving motor is fixedly arranged on the inner wall of each motor cylinder, and an air outlet header pipe is fixedly arranged on one side of each air outlet cylinder; different types of harmful gases are pertinently adsorbed through the multiple composite adsorption layers, large-particle impurities are filtered through the primary filter layer, acidic or alkaline harmful gases are adsorbed through a chemical reaction by the chemical adsorption layer, and small-molecule harmful gases are adsorbed by the physical adsorption layer through a molecular sieve, so that the adsorption efficiency and effect are greatly improved; various complex harmful gases can be effectively purified.

This invention relates to the fields of adsorbent preparation and heavy metal remediation technology, and particularly to an amorphous iron-magnesium-aluminum silicate, its preparation method, and its applications. This invention utilizes molten salt-mediated ion exchange and lattice recombination under high-temperature conditions to completely and uniformly transform various silicate minerals from complex and inconsistent natural clay minerals into a non-naturally formed, structurally homogeneous, and stable amorphous iron-magnesium-aluminum silicate. This overcomes the limitation of traditional adsorbents having a narrow applicable concentration range, exhibiting extremely strong removal capabilities for heavy metal ions from high to low concentrations, achieving deep purification. Based on the theory of "increasing configurational entropy," this invention proposes the design of a silicate network framework with dense, highly active sites and multiple metals, breaking through the traditional approach of "simple modification" of natural clay minerals. It fundamentally reconstructs their material composition, providing a material that combines low cost with revolutionary adsorption performance.

The utility model discloses a handheld cutting machine is with dustproof structure belongs to cutting machine technical field, and its technical scheme main points include cutting machine body, the outside of cutting machine body is provided with the shell, the outside of shell is provided with water spraying subassembly, the right side of shell is provided with dust absorption subassembly, water spraying subassembly includes the support plate fixed connection in the shell outside, the outside fixed connection of support plate has micro motor, can solve the current handheld cutting machine is with dustproof structure inconvenient according to cutting working condition real -time adjustment water spraying position and range to cause dust cover not comprehensive, and there is blind angle, influence dust suppression effect, and the current dust absorption structure often lacks multistage dust separation purification design, inconvenient to the efficient processing of different particle size dust to cause big granule dust accumulation block, fine dust excretion, influence equipment operation stability and working environment quality problem.

The application belongs to the field of sludge recovery, and particularly relates to a method for recovering calcium fluoride from calcium fluoride sludge, wherein the calcium fluoride sludge is pretreated under ultrasonic waves, the power of the ultrasonic waves is above 20 KHz; a flotation reagent is added to the system after ultrasonic treatment for rough selection, and calcium fluoride rough selection material is collected; the flotation reagent comprises an inhibitor and a collector, the collector comprises formula 1 and formula 2 in a weight ratio of 1:1-2, the pH of the slurry in the flotation stage is 3-5.5; the acid for regulating the pH of the slurry is at least one of hydrochloric acid and nitric acid. The application innovatively adopts an ultrasonic process to pretreat the calcium fluoride sludge, and then cooperates with combined collectors in subsequent flotation and joint control of the pH of the flotation process, so that synergy can be achieved, and high-grade calcium fluoride can be efficiently and greenly obtained based on simple processes and means.

The utility model discloses an on-line adjustable dead steam recovery system which comprises an on-line adjustable ejector, an auxiliary assembly is arranged on the on-line adjustable ejector, and solid pollutants such as particulate matter and impurities in dead steam can be effectively intercepted through the auxiliary assembly arranged on the on-line adjustable ejector. Harmful gas, peculiar smell and part of soluble impurities in the dead steam can be adsorbed, so that the dead steam is efficiently purified, the steam quality is improved, the subsequent dead steam recycling process is ensured to be smoothly carried out, impurities adhered to the filter screen plate can be automatically cleaned, long-term stable operation of the filter structure is ensured, and the service life of the filter structure is prolonged. According to the system, the manual cleaning frequency and workload are reduced, the manual maintenance cost and labor intensity are reduced, meanwhile, the problems of system faults and efficiency reduction caused by untimely or incomplete manual cleaning are solved, and the reliability and maintainability of the system are improved.