596 results about "Composite filter" patented technology

The invention discloses a cyclone separation and moving particle bed coupled pulverized coal pyrolysis oil gas high-temperature dust removal system, and belongs to the technical field of coal clean utilization. The system comprises a cyclone separator, a fine filtration unit, a filter material cyclic regeneration unit and an intelligent control unit, the fine filtration unit comprises a particle bed, a particle bin is arranged at the top end of the particle bed, and a composite filter material layer is arranged on the particle bed; a dust-containing high-temperature oil gas pipeline and a pretreatment high-temperature oil gas pipeline are arranged at the top end of the cyclone separator, dust-containing high-temperature oil gas is introduced into the cyclone separator through the dust-containing high-temperature oil gas pipeline to be pretreated, and the pretreated dust-containing high-temperature oil gas is introduced into the particle bed through the pretreatment high-temperature oil gas pipeline to be finely filtered; and a coke breeze discharge pipe is arranged at the bottom of the cyclone separator. The invention is used for solving the technical problem of low gas-solid separation efficiency at high temperature caused by the adoption of a single filter material in the existing pulverized coal dust removal system.

An acoustic wave device includes a silicon single crystal baseplate including a main surface, a piezoelectric layer directly or indirectly on the main surface of the silicon single crystal baseplate, and an IDT electrode on the piezoelectric layer and including electrode fingers. The piezoelectric layer is a lithium niobate layer. In the main surface of the silicon single crystal baseplate, a plane orientation is (111). When Euler angles in the main surface of the silicon single crystal baseplate are (φ, θ, ψ), the ψ in the Euler angles of the silicon single crystal baseplate is about −30 degrees <ψ< about 30 degrees.

The invention relates to a virtual inertia-damping cooperative adaptive control method for a voltage source type direct-driven permanent magnet wind turbine generator. The method comprises the following steps: constructing a voltage source type direct-driven permanent magnet wind turbine grid-connected equivalent model; constructing a wind turbine generator frequency response model based on a dynamic coupling relationship between virtual inertia and virtual damping; collecting a frequency signal of a common connection point of a power grid, and carrying out collaborative optimization processing on the frequency signal by adopting a composite filter to obtain a virtual power increment; the active power reference value is introduced into an active power control loop of the grid-side converter; and controlling the power grid side converter after the additional power reference value is introduced by adopting a rotational inertia and damping coefficient adaptive control method based on a nonlinear function. According to the method, frequency steady-state deviation compensation and dynamic change rate correction can be realized, the frequency stability under wide-range disturbance can be improved through segmented nonlinear adjustment, and the requirements of unit active inertia response and power grid frequency stability are met.

The invention discloses a circulating water purification treatment process for heat exchange equipment, and relates to the technical field of circulating water purification treatment, and the circulating water purification treatment process comprises the following steps: preparing a polyaspartic acid-silane functionalized grafting intermediate; selecting a porous zeolite matrix, and performing acid activation treatment; the preparation method comprises the following steps: preparing a zeolite matrix, soaking the zeolite matrix in sol, standing, defoaming, heating and calcining to obtain a nano TiO2 coated zeolite matrix of which the surface is coated with nano titanium dioxide; immersing the nano TiO2 coated zeolite matrix into the solution, adjusting the pH value of the solution, and stirring for reaction to obtain a PASP functionalized zeolite filter material; and immersing the PASP functionalized zeolite filter material into a silver nitrate solution, carrying out photocatalytic reduction, and carrying out in-situ reduction and deposition on silver ions to obtain the silver / titanium dioxide-polyaspartic acid synergistic functionalized composite filter material. The composite filter material with synergistic functions realizes efficient scale inhibition and sterilization and rapid purification, shows excellent stability and durability under severe working conditions of high temperature, long period and the like, and is environment-friendly and low in maintenance cost.

The utility model discloses a composite filtering water treatment system for wet spunlace, which comprises an air flotation reaction system, a middle water tank, a sand filtering tank filtering system, a micro-nano filtering system and a clean water barrel for production, the air flotation reaction system, the middle water tank, the sand filter tank filtering system, the micro-nano filtering system and the clean water barrel for production are sequentially connected through pipelines; the air flotation reaction system is connected with a production water recovery pipeline, and the middle water tank is connected with a raw water pipeline. According to the composite filtered water treatment system for wet spunlace, the wastewater treatment efficiency is improved, zero discharge of wastewater is achieved, the environmental influence is reduced, water resources are saved, and the production cost is reduced. And meanwhile, the quality of non-woven fabric products is improved.

The invention relates to the technical field of gas adsorption materials, in particular to a plasma modified UiO-66-NH2 / activated carbon composite filter material as well as a preparation method and application thereof. The preparation method comprises the following steps: adding activated carbon into a UiO-66-NH2 precursor solution, vacuumizing in a vacuum drying oven for 1-3 hours, then transferring into a reaction kettle, heating to 80-120 DEG C, reacting for 20-25 hours, cooling to room temperature, washing and drying to obtain a UiO-66-NH2 / activated carbon composite material; and placing the UiO-66-NH2 / activated carbon composite material in a plasma reactor, and carrying out plasma treatment by taking H2 / Ar as a working gas to obtain the plasma-modified UiO-66-NH2 / activated carbon composite material. According to the invention, UiO-66-NH2 is loaded in the activated carbon, so that the effects of increasing the specific surface area of the activated carbon and developing a microporous structure are achieved, the adsorption capacity of low-concentration trichloro ethylene reaches 281 mg / g, and the UiO-66-NH2 loaded activated carbon is a filter material for effectively adsorbing trichloro ethylene (TCE).

The invention relates to the technical field of air conditioning devices, and discloses a textile equipment air conditioning device which comprises a shell, an air inlet pipe for supplying air to textile equipment is arranged at the bottom of the shell, and a driving system is installed on the upper portion of the shell. An indexing frame capable of periodically rotating by 90 degrees and an inner gear ring capable of periodically rotating at variable speed and intermittently idling are connected to the driving system, and four air conditioning systems are arranged on the indexing frame. The air conditioning system comprises a main shaft, the main shaft is driven by an inner gear ring, and a multi-shaft composite motion module driven by the main shaft is arranged on the indexing frame. Through the electrostatic adsorption section, the activated carbon composite section, the antibacterial nano coating section and the porous ceramic fiber section which are arranged on the composite filter cloth, different pollutants such as dust, organic gas, microorganisms and high-temperature oil mist are adsorbed in a targeted manner, the filtering efficiency is improved, and the types of the pollutants are matched in real time in combination with an intelligent position adjusting system; the core problems that traditional equipment is single in function and low in purification efficiency are solved.

The utility model discloses a composite filter with a cleaning mechanism, and relates to the technical field of composite filters. The device comprises a supporting assembly, a composite filtering assembly is arranged in the supporting assembly, a sweeping assembly is arranged on the outer surface of the composite filtering assembly, a driving assembly is arranged in the supporting assembly, the driving end of the driving assembly is connected with the sweeping assembly, and a collecting assembly is arranged at the bottom of the supporting assembly. The cleaning assembly is driven by the driving assembly, so that the cleaning assembly cleans dust and impurities accumulated on the outer surface of the composite filter assembly, and meanwhile, the collecting assembly can collect the cleaned dust, so that the phenomenon that the dust is accumulated on the outer surface of the composite filter assembly is avoided, and the service life of the composite filter assembly is prolonged. And meanwhile, frequent disassembly and cleaning of the filter element during use of the air purifier are also avoided, so that the overall practicability of the filter element is also improved.

The application discloses a preparation method of plant powder coated particles and application of the plant powder coated particles in a cigarette filter tip, and comprises the following steps: preparing a coating solution; adopting a spraying method to coat the prepared coating solution to the surface of core material particles; air-drying at room temperature, balancing moisture, and screening to obtain the plant powder coated particles. The plant powder coated particles are added into a composite filter tip, and cigarette sensory evaluation is carried out. All the plant powder coated particles can well show plant aroma characteristics.

The utility model discloses a composite filter element and a purifier, and belongs to the technical field of purification, the composite filter element comprises an activated carbon layer and a carbon fiber layer which are laminated; and / or the composite filter element comprises a composite layer, and the composite layer comprises activated carbon powder and carbon fibers. According to the composite filter element disclosed by the utility model, the setting thickness of the activated carbon can be reduced through the high adsorption capacity of the carbon fibers, so that the overall volume of the composite filter element is reduced. Therefore, the volume of the filter element can be reduced on the premise of ensuring the adsorption efficiency, and the problems of overlarge volume and the like of the filter element with high adsorption performance in the prior art are solved.

The utility model provides a composite filter element device and water purification equipment, and the composite filter element device comprises a shell which is provided with an inner cavity, a raw water inlet, a primarily filtered water outlet, a primarily filtered water inlet, a pure water outlet and a wastewater outlet, and the primarily filtered water outlet is communicated with the primarily filtered water inlet; the first filtering module is arranged in the inner cavity, is communicated with the raw water inlet and the primarily filtered water outlet, and is used for filtering water output by the water supply device; the second filtering module is arranged in the inner cavity, the second filtering module and the first filtering module are sequentially arranged in the length direction of the shell, a primary filtered water inlet flow channel is defined by the outer wall of the second filtering module, the outer wall of the first filtering module and the cavity wall of the inner cavity, and one end of the primary filtered water inlet flow channel communicates with the primary filtered water inlet; the other end of the primary filtered water inlet flow channel is communicated with the second filtering module; the second filtering module is communicated with the pure water outlet and the wastewater outlet. The overall size of the composite filter element device can be reduced, so that the space occupied by the composite filter element device in the water purification equipment can be reduced.

The invention belongs to the technical field of cigarette materials, and relates to a filter stick, in particular to a porous colorful composite filter stick which comprises cylindrical forming paper, a porous hollow pipe filter stick and a colorful filter stick are arranged in the forming paper, the porous hollow pipe filter stick and the colorful filter stick are connected end to end, and the colorful filter stick is composed of at least two dyed tow filter strips arranged side by side. The colors of every two adjacent dyed tow filter strips are different, and the number of holes in the porous hollow pipe filter stick is consistent with the number of the colors of the dyed tow filter strips of the colorful filter stick. The invention further discloses a dyeing forming method of the colorful filter stick. The preparation process is simple, the cost is low, the end face of the prepared porous colorful composite filter stick is provided with two kinds of tows with different colors to naturally form a color transition zone, the anti-fake capacity is higher, and the appearance characteristic is more remarkable; in addition, by adding various different essences, smoke can be effectively blended, and the smoking comfort is improved.

The invention belongs to the technical field of filter presses, and discloses a filter press forced cake unloading filter cloth and a forced cake unloading mechanism, the filter press forced cake unloading filter cloth comprises a composite filter cloth, the composite filter cloth comprises a filter layer and a base cloth layer, the filter layer is formed by compounding polytetrafluoroethylene, polyphenylene sulfide and matrix resin, and the base cloth layer is formed by compounding polytetrafluoroethylene, polyphenylene sulfide and matrix resin. The warps of the base cloth layer are formed by twisting polytetrafluoroethylene fibers and zirconium oxide fibers. The polytetrafluoroethylene has corrosion resistance, the polyphenylene sulfide has high temperature resistance, and the zirconium oxide fiber has a synergistic effect of thermal shock resistance, so that the composite filter cloth can stably run for a long time in high-temperature, high-pressure and acid-base environments, the problem that traditional filter cloth is easy to age and damage is solved, and the composite filter cloth optimizes the air permeability and the filtering precision, and has a good application prospect. And the filter cloth has the advantages of corrosion resistance, reduction of filtrate leakage pollution, reduction of waste generation, improvement of the service life, meeting of green production requirements, wide application in the fields of industrial dust removal, chemical filtration, aerospace and the like, and higher adaptability compared with the traditional filter cloth.

This utility model relates to the field of coolant filtration and discloses a concentrated coolant-composite filtration device with a quickly replaceable filter screen. The device includes a filter, a cooling water pipe fixedly connected to the top left side of the filter, a cooling plate installed outside the cooling water pipe, a cooling fan fixedly installed at the front end of the cooling plate, a filter screen cylinder placed inside the filter, a threaded sleeve fixedly connected to the center of the bottom of the filter screen cylinder, and a threaded opening at the top of the filter. This concentrated coolant-composite filtration device with a quickly replaceable filter screen filters particulate impurities contained in the coolant through the filter screen cylinder. Simultaneously, a magnetic rod inside the filter screen cylinder can adsorb metallic impurities mixed in the coolant, enhancing the filtration effect as the coolant passes through the filter screen cylinder. Cleaning is simple; just pull the ring to remove the magnetic rod from the limiting bracket for cleaning, thus solving the problem of poor filtration effect.

The utility model provides a CTO composite filter element, which relates to the technical field of filter elements and comprises a filter element body, a mounting block is mounted on the left side of the filter element body, a protective net is arranged on the right side of the mounting block, a fixed block is mounted on the right side of the filter element body, a rotating plate is arranged in the fixed block, and a cover plate is mounted on the right side of the rotating plate. A filter screen is mounted on the right side of the cover plate, and a pinching pad is mounted on the right side of the cover plate, so that quick mounting and dismounting of the filter element are realized, and the replacement efficiency is improved. Through sliding fit of the protective net and the fixing groove and symmetrical distribution of the soft cushions, impact of water flow on the filter element is effectively prevented, and the service life of the filter element is prolonged. Due to sliding connection between the limiting groove and the limiting plate and sliding connection between the clamping pad and the mounting block, the stability and the sealing performance of the filter element in the working process are ensured. Under the combined action of the technical characteristics, the CTO composite filter element has a better filtering effect, longer service life and a more convenient maintenance mode.

The utility model belongs to the technical field of part cleaning, and particularly relates to a cleaning device for maintenance and repair of spare and accessory parts of a generator set, which comprises a cleaning tank, cleaning fluid is contained in the cleaning tank, a lifting mechanism is fixed on the rear side of the cleaning tank, and a containing leakage tank is fixed in the lifting mechanism; according to the cleaning device, spare and accessory parts are contained through the containing leakage groove and then soaked in cleaning liquid in the cleaning groove, the spare and accessory parts are cleaned in cooperation with work of an ultrasonic cleaning instrument, and after cleaning is completed, the spare and accessory parts can be cleaned through the containing leakage groove; cleaning liquid can be pumped into the filter box through the pump body and treated through activated carbon and a composite filter membrane, so that impurities doped in the cleaning liquid are removed, finally, the cleaning liquid is stored through the storage box, repeated utilization of the cleaning liquid is facilitated, and the cost is saved.

The utility model belongs to the technical field of cigarette filter stick production, and particularly relates to a ternary composite filter tip for improving the comfort level of an ultra-low tar cigarette, which consists of a paper filter stick section, a quality-improving and aroma-enhancing section, a special-shaped hollow core section and molding paper, and the paper filter stick section, the quality-improving and aroma-enhancing section and the special-shaped hollow core section are sequentially arranged from a tobacco shred end to an inlet end and are wrapped and fixed by the molding paper. The ternary composite filter tip has the functions of reducing tar, guaranteeing the physiological satisfaction of smoking, improving the comfort level and fragrance quality of smoke and improving the state of the smoke, the hollow core structure can be designed into various shapes, and the purpose of novel and unique appearance is achieved.

The invention belongs to the technical field of filter materials, and particularly relates to an electret enhanced composite filter material and a preparation method thereof.The electret enhanced composite filter material comprises a PET fiber layer, an aramid nanofiber layer and an alkali-free glass fiber layer from top to bottom, and the mass ratio of the PET fiber layer to the aramid nanofiber layer to the alkali-free glass fiber layer is (30-60): (5-20): (20-50). According to the invention, the PET fiber layer is used as a supporting base material, so that good mechanical strength, structural stability and a preliminary filtering function are provided for the composite filter material; the aramid nanofiber layer is arranged, so that the filtering precision and efficiency of the composite filter material are remarkably improved; the alkali-free glass fiber layer is arranged, so that the filtering performance and the thermal stability of the composite filter material are further enhanced; the three-layer structure has a synergistic effect, so that the mechanical strength and economical efficiency of the filter material are considered while the filter precision of 0.1 mu m is realized, and the filter material has excellent comprehensive performance.

The invention relates to a micron carbon-based composite filter membrane material with a micro-nano aperture structure and a preparation method of the micron carbon-based composite filter membrane material. The micron carbon-based composite filter membrane material comprises an adsorbent material (a micron carbon-based porous adsorbent) and a binder material (a high-molecular binder), wherein the adsorbent is one or more of activated carbon, graphitized carbon black, porous graphite carbon, a metal organic framework-based porous carbon material, a carbon nanotube and a carbon molecular sieve. The invention has the advantages of acid and alkali resistance and capability of adapting to waste liquid treatment work in various environments, and also solves the problem of connection between an adsorbent and an adhesive interface, the problem of controllable pore size of a filter membrane, the problem of uncontrollable adsorption capacity of the filter membrane and the like. The method provided by the invention can be used in treatment of a variety of industrial wastewater, and has good social value and application value.

The invention discloses a Yellow River raw water coagulation-sand filtration-ultrafiltration treatment system and method based on a composite filter material, and belongs to the technical field of water treatment. The device comprises a coagulation unit, a sand filtration unit and an ultrafiltration unit which are sequentially connected in the water flow direction. Wherein the sand filtration unit is filled with multiple layers of composite filter materials, and the composite filter materials sequentially comprise an aluminum ion modified quartz sand layer, an aluminum ion modified quartz sand layer and an aluminum ion modified quartz sand layer from top to bottom, the granular active carbon layer is used for deeply adsorbing and removing small molecular organic matters; and the manganese sand layer is used for catalytically removing iron and manganese ions and is used as a supporting layer for stabilizing the filter bed. The method comprises the following steps: carrying out coagulation treatment on Yellow River raw water, introducing the treated Yellow River raw water into the composite sand filtration unit, carrying out deep pretreatment, and filtering the pretreated Yellow River raw water through the ultrafiltration membrane. According to the method, through gradient filtration and function cooperation of the composite filter material, the synchronous removal efficiency of turbidity and UV254 can be remarkably improved, high-quality inlet water is provided for an ultrafiltration membrane, membrane pollution is effectively controlled, system operation energy consumption is reduced, and the method has the advantages of being low in resource consumption, little in environmental pollution, good in economic benefit and the like.

The utility model provides an efficient low-carbon PPS membrane filter material pressing device which comprises a bottom plate, a first supporting seat, a second supporting seat and a third supporting seat are sequentially and fixedly connected to the bottom plate in the extending direction of the bottom plate, rotating shafts are rotationally connected to the first supporting seat, the second supporting seat and the third supporting seat, rotating rollers are arranged on the outer circle faces of the rotating shafts in a sleeved mode, and the rotating rollers are arranged on the outer circle faces of the rotating shafts. A gluing mechanism is fixedly connected to the first supporting seat, a pressing block is fixedly connected to the second supporting seat, a composite film is wound around a rotating roller of the second supporting seat, the gluing mechanism comprises a glue storage bin, a first glue outlet pipe and a flow limiting assembly, the glue storage bin is fixedly connected to the first supporting seat, and the first glue outlet pipe is fixedly connected with the glue storage bin. According to the scheme, the first supporting seat is fixedly connected with the gluing mechanism which is driven by the driving shifting piece and can be used for periodically gluing the composite filter material, so that the composite filter material is coated with a glue solution more uniformly and properly, and the aim of improving the bonding quality of the composite filter material and a composite membrane is fulfilled.

The application discloses a circulating water purification treatment process for heat exchange equipment and relates to the technical field of circulating water purification treatment, and comprises the following steps: preparing a polyaspartic acid-silane functionalized graft intermediate; selecting a porous zeolite matrix and performing acid activation treatment; immersing the matrix in sol, standing for defoaming, and performing temperature rising calcination to obtain a nano TiO2-coated zeolite matrix coated with nano titanium dioxide on the surface; immersing the nano TiO2-coated zeolite matrix in a solution, stirring and reacting after adjusting the pH value of the solution to obtain PASP functionalized zeolite filter material; immersing the PASP functionalized zeolite filter material in a silver nitrate solution, performing photocatalytic reduction, reducing and depositing silver ions in situ, and obtaining silver / titanium dioxide-polyaspartic acid synergistic functionalized composite filter material. Through the synergistic composite filter material, efficient scale inhibition and sterilization and rapid purification are realized, excellent stability and durability are exhibited under harsh working conditions such as high temperature and long period, the application is environment-friendly, and the maintenance cost is low.

The invention relates to the technical field of sump oil treatment, and discloses a multi-stage filtering device which comprises a rolling mill system, a waste oil tank and a clean oil tank, a first sewage pumping pipe fitting is installed between the rolling mill system and the waste oil tank, and a first oil pumping pipe fitting is installed between the rolling mill system and the clean oil tank; a first filtering unit, a second-stage precipitation unit, a storage unit, a second filtering unit, a fourth-stage precipitation unit and a fifth-stage precipitation unit are arranged between the waste oil tank and the clean oil tank. According to the multi-stage filtering device, the first filtering unit, the second-stage precipitation unit, the storage unit, the second filtering unit, the fourth-stage precipitation unit and the fifth-stage precipitation unit are arranged to form the multi-stage filtering device, and the multi-stage filtering device is subsequently combined with a rolling mill system, a waste oil tank and a clean oil tank for use; the composite filtering treatment effect of not less than two-stage filtering and five-stage precipitation can be achieved on sludge, the recycling rate of purified oil is increased, meanwhile, oil sludge can be filtered stage by stage and collected in a unified mode, and the operation effect of the whole device is fully optimized.

The utility model relates to the technical field of water purification devices, and discloses a high-flow water purification device with a built-in pressure tank, which comprises a computer board, the bottom of the computer board is fixedly connected with a filling pump, the output end of the filling pump is communicated with the pressure tank, the right side of the pressure tank is fixedly connected with an RO (reverse osmosis) membrane, the right side of the RO membrane is provided with a T33, and the right side of the T33 is provided with a water outlet. And a composite filter element is arranged on the right side of the outer wall of the T33, a bottom plate is fixedly connected to the bottom of the filling pump, the bottom plate plays a supporting role, and anti-skid pads are fixedly connected to the left side and the right side of the bottom of the bottom plate correspondingly. According to the composite filter element, when water passes through the composite filter element, the water firstly passes through the activated carbon layer to remove different colors, peculiar smell and part of chemical substances in the water, and meanwhile, trace metal ions in the water can be adsorbed by the activated carbon layer to further optimize the water quality, so that the taste of the water is improved, and the water becomes more sweet and refreshing; therefore, the requirements of users are met, and the using effect of the device is improved.

The utility model discloses a dehydrating and decoloring device for white oil after extraction, and relates to the technical field of lithium batteries. A liquid inlet is formed in the upper end of the tank body, and a liquid outlet is formed in the bottom of the tank body; the composite filter layer is arranged in the tank body, the tank body is divided into an upper cavity and a lower cavity by the composite filter layer, and the composite filter layer is used for filtering impurities and water in the white oil. According to the utility model, white oil separated by the centrifugal machine can be filtered, impurities and water in the white oil are filtered out, and the recycling requirement is met; power equipment does not need to be arranged, so that the production cost is remarkably reduced, emission of greenhouse gases such as carbon dioxide generated by power generation is reduced, and positive significance is achieved for environmental protection.

The present application relates to sludge treatment technical field, specifically disclose a kind of vertical extrusion type sludge treatment system and method, including cloth mechanism and filter pressing mechanism, cloth mechanism is used to deliver composite filter cloth with sludge clamped to filter pressing mechanism;Filter pressing mechanism includes: filter pressing cavity, for realizing composite filter cloth stacking and filter water;At least one movable filter assembly is arranged in extrusion cavity along vertical direction;Hydraulic mechanism is used to exert vertical pressure on the composite filter cloth stacked in filter pressing cavity.The present application is at least one movable filter assembly arranged in extrusion cavity along vertical direction, and adaptive design is carried out to movable filter assembly, so that in the process of composite filter cloth stacking, not only will not affect filter cloth stacking, and using movable filter assembly separates the support to stacked composite filter cloth, beneficial to the flow of upper layer water to lower layer, and movable filter assembly has extrusion effect to the composite filter cloth on its two sides, can improve filter pressing effect.

The utility model provides an air purifier which comprises a shell provided with an airflow channel, and the airflow channel penetrates through the two opposite sides of the shell; the condensation filter screen is arranged at the air inlet end of the airflow channel and is used for uniformly distributing and condensing the inlet airflow; the composite filter element is arranged in the airflow channel, located between the air inlet end and the air outlet end of the airflow channel and used for filtering liquid pollutants, aerosol particles and gas pollutants in the condensed airflow; the fan is arranged at the air outlet end of the airflow channel, and the fan is used for guiding airflow to flow in from the air inlet end of the airflow channel and to be discharged from the air outlet end of the airflow channel; wherein the airflow channel is linear. According to the air purifier, the airflow backflow probability can be effectively reduced, the turbulent flow energy generation rate is greatly reduced, and airflow flows more smoothly in the airflow channel, so that airflow around the air purifier smoothly flows into the airflow channel, the smoke escape amount can be effectively reduced, and the oil smoke purification efficiency is improved.

The invention relates to the technical field of filter materials, in particular to a mineral composite filter element and a preparation method and application thereof. The mineral composite filter element comprises the following raw materials in parts by weight: 1-50 parts of a hydrogen production material, 1-15 parts of a mineralization material, 5-10 parts of a microporous material, 1-10 parts of an antibacterial material, 5-50 parts of activated carbon and 5-60 parts of a thermoplastic polymer, the hydrogen production material is one or two of magnesium-based and silicon-based mineral hydrogen production material particles. Through the integrated structural design, multiple functions of filtration, mineralization, hydrogen production, antibiosis and the like are efficiently, stably and enduringly integrated, and the defects that in the prior art, a filter element is single in function, short in service life, unstable in efficiency, complex in system and the like are overcome.

The invention relates to the technical field of gas adsorption composite materials, in particular to zirconium-based MOF composite filter cloth and a preparation method and application thereof. The preparation method comprises the following steps: by taking a polyester non-woven fabric as a flexible carrier, sequentially carrying out alkali liquor activation and epoxy silane surface treatment to construct an active interface layer rich in epoxy groups; synthesizing a difunctional organic ligand simultaneously containing carboxylic acid and thioether functional groups by adopting a one-pot condensation reaction; in-situ self-assembly of zirconium metal clusters and bifunctional ligands is realized through a solvothermal-hot pressing synergistic process, oriented growth of MOF crystals on the surfaces of fibers and covalent interface connection formed through epoxy-carboxyl ring-opening reaction of a silane coupling agent are synchronously completed, and the MOF composite filter cloth is obtained. According to the zirconium-based MOF composite filter cloth disclosed by the invention, the efficient and high-selectivity capture of trace SOs is realized by utilizing the synergistic effect of thioether groups in ligands and unsaturated sites of metal clusters, and the regeneration is realized to a certain extent.