541results about How to "Small filter resistance" patented technology

The invention relates to a flexible tubular solid liquid processor, with filter, heat exchange and thermal extraction functions, wherein the filter element at least comprises one flexible tubular membrane unit, upper flange room and lower flange room; the hydraulic extracting system comprises pressure container, extract pump and tubes; the material liquid of container can be filtered by the tubular filter membrane of membrane unit, and said material liquid can be used as work medium to extract the concentrated material liquid in the filter room of membrane unit and discharge filter slag; the pressure container or the filter room of membrane unit can be filled with medium to exchange heat, to realize thermal filter or extraction; the filter element is arranged on the bearing base inside the pressure container; the filter rotator can rotate the filter element to realize cross-flow filter; and the invention can be arranged with gas or water reverse tube and vacuum filter tube; the slag discharge system comprises slag discharger or tubular inner/outer membrane scraper, or vibration slag discharger, or compression slag discharger.

The invention discloses a manufacturing method for extracting and processing fresh juice stock solution by using dendrobium officinale as a raw material. The method furthest protect the color, flavor, nutrition and effective ingredients of dendrobium officinale fresh juice by surface sterilization of the collected fresh dendrobium officinale and technology of juicing, enzymolysis, vacuum degasification, micro-filtration, ultra-filtration, sterile filling, high-temperature instantaneous sterilization and the like, and meanwhile, the product is favorable for storing and realizing industrialized production. The dendrobium officinale is processed into the dendrobium officinale fresh juice stock solution which is easy to store, convenient to carry, simple to administrate, good in mouthfeel and easy to absorb and has health-care nutritional components and medicinal functions; the fresh juice stock solution does not contain any additive; and the content of the fresh juice stock solution reaches over 99 percent. The dendrobium officinale fresh juice stock solution can be administrated separately, also can be added into mineral water to form health-care beverage, also can be dissolved into wine to form nourishing health-care wine, and can be added into high-grade dishes to form nourishing dishes for eating.

A process for treating sewage by integrating sequential active sludge method with membrane-bioreactor features that the membrane assembly is put in bioreacting pool, its outlet is respectively connected to air inlet pipe and water outlet pipe via two control valves, the whole system sequentially passes through flow-in, reaction, discharge and idle steps, that is, anaerobic, aerobic and anoxic states, and said membrane assembly plays the roles of aerating unit in reaction step or separator in discharge step. Its advantages are simple structure and high effect.

A filter-type gas separating-cleaning apparatus with quickly moving filter layer features that its filter cylinder rotating at high speed is composed of external filter net, supporting posts, internal filter net, shaft sleeve, shaft disk and supporting rings, and the gas containing solid particles and/or liquid drops is filtered by said filter cylinder. Its advantage is use of big-mesh filter material to remove fine solid particles and/or liquid drops, resulting in high filter speed, and easy cleaning.

The invention relates to a compound air filter material and a method for preparing the same. The composite air filter material used for filter bags comprises a protective layer, a deodorizing layer and a filter layer, wherein the protective layer and the filter layer are compounded on two side faces of the deodorizing layer respectively; the protective layer is made of wood pulp fiber filter paper, spun-bond non-woven fabric or spun-lace non-woven fabric, and the gram weight of the material of the protective layer is 10 to 200g/m; the deodorizing layer is made of one of active carbon, zeolite , sodium bicarbonate, magnesium aluminum silicates and silica gel or a mixture of any two of the wood pulp fiber filter paper, the spun-bond non-woven fabric and the spun-lace non-woven fabric, and the gram weight of the material of the deodorizing layer is 10 to 300g/m; and the filter layer is made of melt-blown non-woven fabric, wood pulp fiber filter paper or SMS non-woven fabric, and the gram weight of the material of the filter layer is 10 to 100g/m. The compound air filter material has high filtration efficiency and deodorization efficiency, low filtration resistance and high dust capacity.

The invention relates to a high temperature resistance basalt fiber composite filter material and a preparation method thereof; the composite filter material comprises basalt fiber base fabric and high-performance fiber mesh in a weight ratio of 7:1-2:1; the preparation method comprises the following steps: forming high-performance fiber mesh on the basalt fiber base fabric, combining and strengthening the material more by spunlaced process, hot rolling the material, then soaking the material in water repellent oil-proofing agent, sizing and obtaining the finished product. The filter material of the invention has the advantages of stable structure, high filtration accuracy, small bore diameter, concentrated pore diameter distribution and high temperature resistance, can bear 450 DEG C of instantaneous high temperature and can be used stablely for long time below 280 DEG C.

The invention discloses a preparation method of a wrapped polytetrafluoroethylene ultra-micro filter tube membrane. A sintered or unsintered drown polytetrafluoroethylene membrane of which the aperture is 0.03-0.3micon and the thickness is 10-50micon is cut into polytetrafluoroethylene strip-shaped membranes which are 5-25mm in width; the membranes are wrapped on a porous support tube which resists a temperature of 300-500 DEG C and is corrosion resistant and organic solvent resistant; and the support tube wrapped with the prepared polytetrafluoroethylene membranes is sintered for 20-80s at the temperature of 300-400 DEG C so as to prepare the wrapped polytetrafluoroethylene ultra-micro filter tube membrane of which the aperture of a filtering layer is 0.01-0.05micon. The wrapped polytetrafluoroethylene ultra-micro filter tube membrane has the advantages of high porosity, small aperture, uniformity in filtering layer, blocking resistance, internal and external pressure resistance, capability of back washing and the like, and can be used in solid-liquid and gas-liquid separation with high viscosity, high solid content and high pollution in food concentration, waste penetration liquid treatment, oil-water separation, membrane biologic reactor and the like.

The invention relates to an integrated sewage treatment device with high efficiency and low consumption and a treatment method, and belongs to the field of sewage treatment. The integrated sewage treatment device comprises a pretreatment unit, a multi-oxidation-deoxidation environment coupling biological reaction pond unit and a deep treatment unit sequentially connected. The multi-oxidation-deoxidation environment coupling biological reaction pond unit adopts a three-stage anoxia-aerobiotic alternating reaction pond filled with a circular composite glass ball porous microbial carrier. The deep treatment unit comprises a filter cloth dynamic film biological reaction pond and first and second dynamic films. Sewage is treated through the devices sequentially. The device provided by the invention cannot only remove carbon containing organic matters, but also has good nitrogen and phosphorus removal capacity.

The invention belongs to the field of ceramic materials in the field of inorganic non-metallic materials, and in particular relates to a high-performance high-temperature ceramic membrane material and a preparation method thereof. It is made of an inner support layer and an outer film layer, both of which are composite structures of refractory ceramic aggregate and polycrystalline mullite short fiber. The present invention has better mechanical strength and toughness while ensuring the high permeability, low resistance, high porosity and high thermal stability of the high-density ceramic membrane material, and solves the problems of poor toughness and poor toughness that currently hinder the promotion and application of high-density ceramic membrane materials The technical problem of being easy to break; the invention also provides its preparation method.

The invention discloses a manufacturing method of a two-component superfine non-woven filtering material. Any two of polyester (PET), polyamide (PA6) and polyethylene (PE) serve as raw materials for composite spinning, the pressure in the airflow drafting process is controlled, and two types of spun viscose webs which are greatly different in fiber line density are obtained; lapping is conducted on the two types of spun viscose webs, multiple cycles of spunlace splitting and solidification formation are conducted, and the superfine non-woven filtering material is finally formed. According to the two-component superfine non-woven filtering material manufactured through the method, due to the fact that two-component hollow orange-slice fibers are cracked and separated into superfine fibers under the spunlace pressure, a special three-dimensional stereo structure is formed after solidification, different fiber density gradients exist, and the manufacturing method has the advantages of being high in filtering efficiency, small in resistance, large in dust containing capacity and the like.

A flexible pipe type filter is composed of at least one filter element consisting of at least one membrane module comprising at least one membrane unit, raw liquid delivering system, pressure generator for pressing the flexible membrane units to remove clean liquid from raw liquid, filtrate draining system filtered dregs discharging system and control system. Its advantages are high filtering speed and dry dregs.

The invention discloses needling static filter cotton. The needling static filter cotton comprises a needling non-woven layer, wherein any surface or two surfaces of the upper surface and the lower surface of the needling non-woven layer is or are provided with a spunbonded nonwoven fabric layer. A preparation method of the needling static filter cotton comprises the following steps of producing a needling cotton, drying, compositing the needling cotton, applying static electricity and packaging a finished product. The needling static filter cotton provided by the invention has the advantages that the needling cotton is composited, the wind pressure resistance of the needling cotton is enhanced, so that the needling cotton plays the supporting role, the high-density electrostatic charge is applied on the needling cotton, so that not only is the filter efficiency greatly improved to enable the filtration efficiency to be more than 98%, and also the filtration resistance is greatly reduced to be reduced to be below 7Pa. The needling static filter cotton after processing has the outstanding characteristics that the filtration efficiency is high, the filtration resistance is ultralow and the service life is long, the physical properties such as longitude and latitude brute force property and a wear-resisting property are excellent, and the needling static filter cotton is greatly superior to the common melt-blow static filter cotton at present.

The invention discloses a method for utilizing high-load earthworm biological filter to treat decentralized sewage in countries, and relates to a sewage treatment method. The treatment method comprises the following steps: the decentralized sewage in the countries is firstly collected; suspended matter and floating matter are removed by a pretreatment tank; BOD5 is led to be 110 to 160mg/L, COD is 120 to 150mg/L and SS is 90 to 130mg/L; then the obtained mixture is pumped into the high-load earthworm biological filter according to hydraulic loading of 4 to 6m<3>(m<2> question mark d); after passing through a first earthworm biological filtering layer and a second earthworm biological filtering layer which are filled with light shale spherical porcelain granules (7) filtering media with the diameter of 3 to 7mm and 15000 to 28000 eisenia foetidas (8) are added on the surface of the filtering media per square meter, the water which is discharged from a settling tank (6) and has BOD5 of less than 15mg/L, COD of less than 60mg/L and SS of less than 15mg/L reaches the national water quality standard for field irrigation; little amount of residue sludge which is collected by the settling tank (6) and contains wormcast is used for improving the soil or is used as fertilizers. The method has large hydraulic loading, small occupy area, is hard to be blocked, has simple process and operation, good water outlet quality and low construction cost and operating cost and can be widely used for treatment of the waste water in rural areas.

The invention provides a double-layer filtering material for an internal combustion engine. The double-layer filtering material is provided with a coarse filtering layer and a fine filtering layer according to the direction of flow; the fine filtering layer consists of fibrillating fiber with the quality fraction between 2 to 100 percent and natural fiber with the quality fraction between 0 to 98 percent, wherein the diameter of the trunk of the fibrillating fiber is 1 to 20 microns, the length of the fibrillating fiber is 0.1 to 10 millimeters, the beating degree of the fibrillating fiber is 12 to 65 degrees SR, the diameter of the natural fine filtering layer fiber is 5 to 30 microns, and the length of the natural fine filtering layer fiber is 0.5 to 3.5 millimeters. The double-layer filtering material realizes to improve the filtering efficiency of the filtering material while keeping low filtration resistance and high capacity of holding dust.

The invention discloses a micrometer/nanometer fiber composite filtering material and a preparation method thereof. The material comprises nanometer fiber and a single-layer micrometer fiber net; andthe structure is as follows: single or bunchy nanometer fiber is distributed on the surface of the single-layer micrometer fiber net uniformly or is embedded in a fiber assembly gap of the single-layer micrometer fiber net uniformly. The method comprises the following steps: preparing electrostatic spinning liquid; preparing the single-layer micrometer fiber net from micron-sized fiber and conveying the single-layer micrometer fiber net to a net conveying curtain with meshes; starting to perform electrostatic spinning by using the electrostatic spinning liquid, jetting single or bunchy nanometer fiber on the single-layer micrometer fiber net uniformly from an electrostatic spinning nozzle to form a single-layer micrometer/nanometer fiber composite net; and forming a continuous multi-layerstructure composite fiber net by using the single-layer micrometer/nanometer fiber composite net by a cross lapping mode, and performing mechanical consolidation to obtain the micrometer/nanometer fiber composite filtering material. The method is simple in production process, high in controllability and easy in industrialization.

The invention relates to a foamed ceramic aluminum melt filter tube, a manufacturing method and a filtering device. The filter tube is prepared from the following raw materials in part by weight: 30 to 40 parts of aluminum dihydrogen phosphate, 1 to 2 parts of fumed silica, 2 to 3 parts of kaolin clay, 1 to 2 parts of aerogel, 60 to 62 parts of alpha alumina, 1 to 2 parts of anti-foaming agent, and 0.5 to 1 part of dispersant. The filter tube consists of a filter and a filter box which are integrated by a foamed ceramic tube, has the combined advantages of high efficiency of aluminum melt filtration by a plate-like foamed ceramic filter and large-area and high-precision filtration of a tube-like porous ceramic filter in a small box, and replaces the plate-like ceramic filters and the porous ceramic filter tubes in the conventional process boxes. When aluminum melt is passed through filter box provided with an integrated foamed ceramic filter tube, because the foamed ceramic filter tube has the characteristics of high open ratio, small filtration resistance, small static difference, high surface energy, strong impurity adsorption, low cost and the like, the aluminum molten liquid can be filtered in large area and high efficiency in the small filter box.

The invention relates to a high-flux ceramic flat sheet membrane and a preparation method thereof. The high-flux ceramic flat sheet membrane comprises a ceramic flat sheet membrane supporting body and a separation membrane layer wrapping the outer surface of the ceramic flat sheet membrane supporting body. The ceramic flat sheet membrane support body is prepared from the following raw materials in parts by mass: 40-57 parts of diatomite, 30-40 parts of alpha-alumina powder, 4-12 parts of a pore forming agent, 20-40 parts of a support body binding agent, 8-12 parts of a lubricant, 9-13 parts of a plasticizer and 12-18 parts of chopped fibers. The separation membrane layer is prepared from the following raw materials in parts by mass: 40-43 parts of ceramic powder particles, 4-6 parts of ethanol, 19-40 parts of a separation membrane layer binding agent and 9-12 parts of polyethylene glycol. The high-flux ceramic flat sheet membrane product is low in sintering temperature, low in production cost, high in product porosity, small in filtering resistance and high in water flux.

The invention relates to a making method of an antibacterial high-efficiency filtering nonwoven fabric. The method comprises the following steps: adding a silver nitrate solution to an amino-containing hyper branched polymer solution prepared through reacting methyl acrylate with ethylenediamine in order to obtain an amino-containing Ag/HBP, and mixing the silver nitrate solution with a coupling agent to carry out surface treatment; and impregnating a nonwoven fabric in an Ag/HBP mixed solution, and carrying out heat treatment to obtain the filtering nonwoven fabric. The nonwoven fabric made in the invention can be used in personal protective articles, also can be used in air purifiers of household and office environments, greatly improves the filtration of miniature particles, and can kill bacteria carried by dust particles in air.

The invention discloses a ceramic fiber filtering tube, a preparation method and a pressurization and suction forming device. The pressurization and suction forming device comprises a forming mold, apressurization pump, a dosage bunker, a vacuum pump and a vacuum filtrate tank, wherein the forming mold comprises an inner template, an upper template, a lower template, filter cloth and a blank tubecavity; the filter cloth and the blank tube cavity are arranged between the inner template and the upper template respectively; the filter cloth is arranged on the inner template; the lower templateis connected with the upper template; the upper and lower flange faces of the inner template are provided with sealing gaskets respectively; the top of the upper template is provided with a quick coupler for charging water or slurry; the quick coupler is connected with the pressurization pump; the pressurization pump is connected with the dosage bunker; the middle part of the lower template is provided with a water outlet for discharging water or slurry; the water outlet is connected with the vacuum filtrate tank; the vacuum filtrate tank is connected with the vacuum pump; a vacuum pressure gauge and a blow-off valve are arranged between the vacuum filtrate tank and the vacuum pump. The pressurization and suction forming device adopts a pressurization forming and suction sizing demolding form, is simple in structure, is convenient for forming, and is convenient to operate.

The invention discloses quantitative filter paper, comprising an inflow layer, a middle layer and an outflow layer. The inflow layer is made by forming, pressing and drying slurry 14 DEG SR to 17 DEG SR in beating degree; the middle layer is made by forming, pressing and drying pulp 19 DEG SR to 21 DEG SR in beating degree; the outflow layer is made by forming, pressing and drying pulp 23 DEG SR to 25 DEG SR; the inflow layer, the middle layer and the outflow layer are made of the pulp of same material. The invention further discloses a preparing method of and application of the quantitative filter paper. The layers have different beating degrees of the pulp, the different void distributions of the insides are ensured, and high filtering speed, high precision and high stability are integrated; the preparing method ensures that the fibers in the layers are tightly tangled together, no evident interface occurs, the three-layer composite filter payer manufactured with the pulp is in a complete structure, and smoothness of the separating process is ensured.