802 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.

The utility model relates to the technical field of water purification, and provides a water purification assembly and water purification equipment, the water purification assembly comprises a shell and a filter element, the filter element comprises a front filter element, a capacitive deionization filter element and a rear filter element, and a positive pole lug and a negative pole lug of the capacitive deionization filter element are arranged in a containing space; the first water outlet of the rear filter element is formed in the water outlet space, and the design is based on the water outlet space and the accommodating space which are isolated from each other, so that water and electricity isolation of the water purification assembly is realized, and the reliability of water purification work of the water purification assembly is ensured. Moreover, the front filter element, the capacitive deionization filter element and the rear filter element are integrated into a whole to form the composite filter element, and the composite filter element occupies a small space, so that the waterway structure of the existing water purification assembly is simplified.

The utility model discloses an energy-saving type dust micro-power grading purification and recovery device which is formed by combining a dust particle settling box (4), a filtering dust removal purification box (5), a dust discharge port (7), a dust hopper (8), an electric dust discharge valve (9) and supporting legs (10). A dust-containing airflow inlet (1) is formed in the upper part of the dust particle settling box (4), and an air supply outlet (2) is formed in the outer side of the lower part of the dust particle settling box (4); a purified gas outlet (3) is formed in the top of the dust particle settling box (4), and a composite filtering assembly (6) is arranged on the upper portion in the dust particle settling box (4). According to the utility model, the combined action of multiple acting force fields such as gravity, inertia force, collision action, Brown diffusion, coagulation action and retention action is utilized to realize micro-power sedimentation, filtration, dust removal and graded purification of dust of the mine crushing system, and the dust removal device has the advantages of high dust removal efficiency, low energy consumption, low operating cost, simple structure and convenience in installation; the dust removal efficiency is greatly improved, the comprehensive dust control and removal effect is remarkable, and the energy-saving effect is remarkable.

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 discloses a preparation method and application of a PTFE composite filter material with a denitration function, and belongs to the technical field of filter materials. A high-temperature-resistant PTFE polymer needled filter material is used as a base material, and polydopamine and MXene are adopted to carry out functional modification on the fiber surface of the filter material, so that the dispersion degree and the synergistic effect of a catalyst on the fiber surface are improved; the preparation method comprises the following steps: uniformly loading a manganese-cerium denitration catalyst precursor on the surface of a filter material fiber by virtue of an equivalent-volume impregnation method, then calcining to obtain an active component of the denitration catalyst, and finally impregnating in hydrogen peroxide to further activate the composite filter material, so that the low-temperature denitration activity of the composite filter material is improved. The PTFE composite filter material prepared by the invention has good denitration capability at low temperature, retains the original dust filtering effect in the preparation process, can meet the requirement of low-temperature denitration and dust removal integration in industrial tail gas, and effectively overcomes the defects of complexity, high treatment cost and the like of a tail flue gas purification system in the prior art.

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 utility model discloses an efficient HEPA potassium permanganate composite filter material preparation particle self-suction type feeding device, which comprises a feeding bin, a negative pressure mechanism and a feeding mechanism, the top of the feeding bin is provided with a main feeding port, the main feeding port is provided with a main feeding pipeline, the main feeding pipeline is provided with an upper layer electric valve and a lower layer electric valve, and the upper layer electric valve and the lower layer electric valve are connected with the negative pressure mechanism. A Y-shaped feeding pipe is mounted at the top of the main feeding pipeline, the Y-shaped feeding pipe is provided with two input pipelines and an output pipeline, the output pipeline is connected with the top of the main feeding pipeline, a negative pressure port is formed in the top of each input pipeline, a filter screen is mounted at the position, close to the negative pressure port, in each input pipeline, and branch feeding ports are formed in the positions, below the filter screens, of the input pipelines; the utility model further comprises. According to the automatic feeding device, automatic feeding and supplementing of particle materials can be achieved, manual time-consuming and labor-consuming feeding and frequent feeding are not needed, the input pipeline is switched to be communicated with the negative pressure source in the feeding process, the filter screen is prevented from being blocked, and the feeding efficiency of the particle materials is improved.

The invention belongs to the technical field of steel plate welding mechanisms, and discloses a steel plate production welding mechanism with a waste gas cleaning structure, which comprises a mounting frame, a filtering device and a dust collecting device, the dust collecting device is hermetically communicated with the filtering device through a first hose, the dust collecting device comprises an upper integrated cavity and a lower integrated cavity, and the filtering device comprises a filtering box body; a filter cartridge is detachably mounted on the filter box body, a dust collector is arranged on the filter cartridge, and the filter cartridge is sequentially provided with a pre-cooling unit module, a back-blowing composite filter element and an activated carbon adsorption layer from bottom to top. According to the steel plate production welding mechanism with the waste gas cleaning structure, source collection of welding waste gas is achieved through the split type dust collecting device, the upper integrated cavity and the lower integrated cavity cooperate to form a multi-stage filtering system, the waste gas collecting efficiency is improved, the overall structure is compact and adapts to different welding angle working conditions, particles are preliminarily filtered through an annular filter screen, and the welding quality is improved. And meanwhile, the device is convenient to disassemble and clean, and the particles are stored.

The utility model relates to the technical field of environment-friendly pyrolyzing furnaces, and discloses a pyrolyzing recovery device with a waste gas treatment function, which comprises a pyrolyzing furnace, a water tank is fixedly mounted on the outer wall of the pyrolyzing furnace, a gas pipe is fixedly mounted at the top of the pyrolyzing furnace, and the gas pipe is fixedly mounted on the outer wall of the pyrolyzing furnace. According to the pyrolysis recovery device with the waste gas treatment function, waste gas can be secondarily filtered through cooperation of a thick-core filter screen, an activated carbon plate and a composite filter screen in a bent pipe and water in a water tank, and when the activated carbon plate needs to be replaced, a threaded rod is rotated through a handle to drive the bent pipe to move downwards to be separated from a gas pipe; meanwhile, the thick-core filter screen, the activated carbon plate and the composite filter screen can be sequentially moved out of the bent pipe one by one in cooperation with supporting of the ejector rod and the cross, the thick-core filter screen, the activated carbon plate and the composite filter screen can be replaced at the moment, the activated carbon plate can be kept in the optimal filtering state to filter waste gas, the waste gas filtering effect can be improved, and use is very convenient.

The utility model discloses a composite filter element and water purification equipment, and relates to the technical field of water purification equipment, the composite filter element comprises a filter bottle, a first filter assembly and a second filter assembly, the bottom of the filter bottle is provided with a mounting port; the filter bottle cap is mounted at the bottle opening; the partition cylinder is arranged in the filter bottle, the partition cylinder divides the interior of the filter bottle into a first filter cavity and a second filter cavity, the first filter assembly comprises a front filter element and / or a rear filter element, and the second filter assembly comprises a reverse osmosis filter element. According to the technical scheme, the mounting opening is formed in the bottom of the filter bottle, so that the first filter assembly with the front filter element and / or the rear filter element is detachably mounted in the mounting opening, and only the first filter assembly needs to be directly dismounted when the first filter assembly is replaced; therefore, the step of detaching the whole composite filter element from the water purification device is omitted, and the replacement step of the first filter assembly is simplified.

The invention relates to the technical field of water conservancy projects, and discloses a two-way water stop cast iron gate with a protection function, comprising: a door-shaped gate frame, which is internally provided with a vertical lifting area; the nodular cast iron gate is movably mounted in the vertical lifting area; the bidirectional self-adaptive sealing system comprises an adjusting cavity which is arranged in the nodular cast iron gate and is through up and down; the connecting rod is fixed to the top of the door-shaped gate frame and extends into the adjusting cavity. The piston assembly can move in the adjusting cavity; when the gate descends, water flow penetrates through the filtering structure to enter the adjusting cavity, the self-weight of the gate is increased, the sealing effect is assisted, the gate can still be kept in a closed state especially under the low-water-pressure or water-free working condition, when the gate ascends, water in the adjusting cavity reversely scours the composite filtering plate, impurities are taken away, and self-cleaning of the filtering system and the bottom sealing strip is achieved; the manual maintenance frequency is reduced, and the device has the advantages of being high in practicability and self-cleaning.

The invention discloses a paper composite filter material for reducing hydrocyanic acid and crotonaldehyde and a preparation method and application thereof, and the preparation method comprises the following steps: adding a gelator into a solvent to form a gelator solution; transferring the gelator solution into a liquid storage tank of an intaglio printing device, and printing and coating the gelator solution in the liquid storage tank onto a paper base material by using an anilox roller; the coated paper base material is conveyed to a low-temperature tunnel, so that nanofibers of a three-dimensional network structure are formed inside and on the surface of the paper base material in a self-assembly mode; and transferring the paper base material subjected to low-temperature treatment to a drying cylinder, and drying to obtain the paper composite filter material. According to the prepared paper composite filter material, the specific surface area in contact with smoke can be increased, the paper composite filter material can make full contact with the smoke in the process that the smoke passes through a filter stick, the interception capacity of the paper filter stick on hydrocyanic acid and crotonaldehyde in mainstream smoke of cigarettes is improved through amino and carboxyl groups on the surfaces of the nanofibers, and the sensory quality of the cigarettes with the paper filter stick is improved.

The invention discloses a tough underwater superoleophobic gel composite coating and a preparation method thereof.The preparation method specifically comprises the following steps that 1, a base material is soaked in a mixed solution of tannic acid and 3-aminopropyltriethoxysilane, after a period of time, the base material is taken out and soaked in a ferric chloride solution, and a nano-particle modified filter screen is obtained after drying; (2) loading the gel precursor solution on a nanoparticle modified filter screen through a dip-coating method, and preparing a gel composite filter screen under ultraviolet initiation; and (3) soaking the gel composite filter screen in a sodium citrate aqueous solution, and taking out the gel composite filter screen to obtain the tough underwater super-oleophobic gel composite coating modified fishing net. According to the method, the tough underwater super-oleophobic gel composite coating modified fishing net is prepared by adopting an impregnation method and ultraviolet initiation, the preparation process is simple, and the prepared gel composite coating has excellent oil stain resistance, mechanical stability and chemical stability and can be applied to crude oil adhesion prevention and oil-water separation of industrial oily wastewater.

The invention belongs to the technical field of air purification equipment, and particularly relates to a movable air quality monitoring and purifying device which comprises an intelligent control assembly, a control panel, a movable shell, an air detection sensor assembly, a suction fan and a composite filter element. The composite filter element of the movable air quality monitoring and purifying equipment has a damp-proof function, the situation that the composite filter element is too moist to breed a large number of microorganisms, and consequently air purification fails is avoided, the use safety and reliability of the composite filter element can be improved, the use cycle of the composite filter element can be prolonged, and the service life of the composite filter element is prolonged. In addition, the movable air quality monitoring and purifying equipment further has the functions of automatic sterilization and indoor drying and automatic humidification, the living comfort of the purified indoor air environment is improved, the air purifying effect of the purifying equipment is improved, the body health of indoor personnel can be guaranteed, and the movable air quality monitoring and purifying equipment is suitable for popularization and application. And the use safety of the air purification equipment is further improved.

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 relates to a cold water, hot water and ice making integrated direct drinking machine which comprises a shell, and a water supply device, a heating device, a cold water device and an ice making device are arranged in the shell in a close fit mode. The water supply device comprises a raw water tank, a self-priming pump, a composite filter element, a combined electromagnetic valve and a pure water tank; the heating device comprises a first water suction pump, a heating body and a water outlet; the refrigeration water device comprises a second water suction pump, a compressor, a drying filter, a condenser, a cold water tank, an ice block heat preservation box, a third water suction pump and a fourth water suction pump, the output end of the third water suction pump is connected with an ice block water tank, an evaporator is arranged in the ice block water tank, the output end of the fourth water suction pump is connected with the water outlet, and a cold water notch is formed in one side of the ice block water tank; the ice block heat preservation box is communicated with the cold water tank; the ice making device comprises a motor and a deicing electromagnetic valve, an ice block box is arranged in the ice block heat preservation box, the water refrigerating and ice making efficiency and quality can be effectively improved, the structure is reasonable, the size is smaller, and the cost is low.

The invention belongs to the field of filter bags, and particularly relates to a filter bag with a multilayer composite filter structure, a support mechanism comprises filter cloth racks arranged up and down, and inner filter cloth clamping plates and outer filter cloth clamping plates are respectively clamped on the inner and outer layers of the filter cloth racks; inner filter cloth is clamped between the filter cloth frames, a plurality of pieces of bent middle filter cloth are formed on the outer layer of the inner filter cloth, and the inner filter cloth, the middle filter cloth and the outer filter cloth are combined into a three-layer filter structure; the middle filter cloth combination is arranged between the inner filter cloth and the outer filter cloth to form a composite filter structure, so that the effective filter area can be increased and the filter performance of the filter bag is improved; the circular track mechanism, the purging mechanism and the vibrating mechanism are arranged, the problem that the interior of the composite filter structure is inconvenient to clean during movement is solved, the purging mechanism and the vibrating mechanism are dynamically covered, dust impurities accumulated on filter cloth are cleaned in an active and passive mode, and the situation that the filter effect of a filter bag is reduced due to local filter cloth blockage is avoided.

The invention relates to a range extender torsional vibration suppression method and system based on high-order filter active damping, and the method comprises the following steps: comparing the target rotating speed of a motor with the actual rotating speed, and obtaining a motor rotating speed error; the motor rotating speed error is converted into rotating speed output torque through a rotating speed controller; extracting a motor rotating speed fluctuation component through a high-order composite filter according to the actual rotating speed of the motor; obtaining compensation torque according to the motor rotating speed fluctuation component in combination with the proportional gain coefficient; superposing the compensation torque into the rotating speed output torque, and performing negative feedback control on the rotating speed of the motor to obtain a final motor torque instruction; and the rotating speed of the motor is controlled according to the final motor torque instruction, and torsional vibration of the range extender is restrained. Compared with the prior art, the torsional vibration of the range extender can be effectively inhibited, the rotating speed fluctuation is reduced, and the NVH performance and the operation stability of the range extender are improved.

The utility model discloses a composite filter element and water purification equipment, and relates to the technical field of water purification, the composite filter element comprises a filter bottle, a filter bottle cover, a separation cylinder, a reverse osmosis filter assembly and a replaceable filter element assembly; the separation cylinder is arranged in the filter bottle and forms a first filter cavity and a second filter cavity which are isolated from each other, the reverse osmosis filter assembly is arranged in the first filter cavity, and the replaceable filter element assembly is detachably arranged in the second filter cavity; the replaceable filter element assembly comprises a shell and a filter element assembly arranged in the shell, a rear water inlet is formed in the shell, a reverse osmosis water outlet communicated with the second filter cavity is further formed in the bottom of the separation barrel, and the reverse osmosis water outlet is communicated with the rear water inlet in an inserted mode. According to the composite filter element disclosed by the utility model, the technical problem that impurities and solid particles filtered by the filter element can remain on the cavity wall after the replaceable filter element assembly is detached from the filter cavity of the composite filter element can be solved.

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 utility model discloses a cavity filler composite filter rod forming device in the technical field of filter rod forming, which comprises a charge rod conveying belt, a charge rod arranging assembly, a smoke gun and a particle adding assembly, the charge rod arranging assembly is arranged between the charge rod conveying belt and the smoke gun, and the particle adding assembly is arranged above the smoke gun; the charge bar arrangement assembly comprises a feeding adapter disc, an anti-backlash adapter disc and a positioning adapter disc, the anti-backlash adapter disc is located between the feeding adapter disc and the positioning adapter disc, and the rotation direction of the anti-backlash adapter disc is opposite to the rotation direction of the feeding adapter disc and the rotation direction of the positioning adapter disc; the particle adding assembly comprises a material bin, a material conveying pipe and a funnel, the funnel is located over the forming paper, the material bin is installed above the funnel, and the material conveying pipe is connected between the material bin and the funnel. The utility model not only realizes the production of the cavity filler composite filter stick, but also has the advantages of simple structure, strong operability and convenience in large-scale application.

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 discloses a PVDF / PFA composite filter material for sewage treatment and a preparation method of the PVDF / PFA composite filter material, and relates to the technical field of water treatment. When the filtering material is prepared, firstly, N-propenylimidazole and 1-chloro-3-phenylpropane react to prepare vinyl imidazolium salt, PVDF subjected to alkali treatment is grafted with the vinyl imidazolium salt, then the PVDF and 5-aza-uracil react, and modified PVDF is obtained; secondly, enabling resorcinol, 3, 5-dihydroxybenzoic acid and formaldehyde to react to obtain porous microspheres, and sulfonating the porous microspheres through chlorosulfonic acid to obtain modified microspheres; finally, PVDF, PFA, polyoxyethylene and the modified microspheres are mixed and subjected to melt spinning, and a fiber membrane is prepared; and carrying out in-situ generation of ferroferric oxide, and activating with hypochlorous acid to obtain the PVDF / PFA composite filter material for sewage treatment. The filter material prepared by the invention has good antibacterial, hydrophilic and photocatalytic degradation properties.

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 present invention relates to the technical field of composite filter elements, and specifically to an ultrafiltration composite filter element and water purification equipment. The ultrafiltration composite filter element provided by the present invention divides the internal space of the outer shell into a first filter element chamber and a second filter element chamber by setting an inner shell, the first filter element is set in the first filter element chamber, and the second filter element is set in the second filter element chamber, so as to realize the parallel composite setting of the two filter elements, and effectively reduce the overall volume of the ultrafiltration composite filter element; at the same time, the first filter element and the second filter element are respectively provided with water inlets, and the first filter element and the second filter element are shared or respectively provided with purified water outlets, so as to realize the ultrafiltration composite filter element switching between the three states of water making state, first filter element backwashing second filter element state and second filter element backwashing first filter element state according to the conduction state of the water inlet and the water outlet, and the switching of the ultrafiltration composite filter element between the three states can be realized by only changing the conduction state of the water inlet and the water outlet, with a simple structure, convenient operation and good cleaning effect.

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 utility model discloses a nano composite filter material mask with high comfort and high antibiosis, which relates to the technical field of masks and comprises a mask body, a fixing ring is fixedly mounted on the surface of the mask body, a rotary sealing blade is rotatably connected to one side, away from the mask body, of the fixing ring, and a second connecting hole is formed in the end of the rotary sealing blade. A second connecting column is rotatably mounted on the inner wall of the second connecting hole, a connecting rod is fixedly mounted at the end, away from the rotary sealing blade, of the second connecting column, a first connecting hole is formed in the end, away from the second connecting column, of the connecting rod, and a first connecting column is rotatably mounted on the inner wall of the first connecting hole; according to the utility model, through the magnetic attraction connection mode between the air supply box and the mask body, a user can conveniently take down the air supply box at any time for charging, meanwhile, the sealing blade is rotated so that the user can easily close the sealing blade when taking down the air supply box, external bacteria and viruses are prevented from invading the interior of the mask, and the continuous protection effect of the mask is ensured.