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1532results about How to "Large filter area" patented technology

Environment-friendly wastewater filtering device

The invention discloses an environment-friendly wastewater filtering device. The environment-friendly wastewater filtering device comprises a box body, a water inlet, a water outlet, a drain outlet and a collecting bin, wherein the box body is of a cuboid hollow structure, the water inlet and the water outlet are formed in two ends of the box body respectively, the drain outlet is formed in the lower end of the box body and is in communicated connection with the collecting bin, and a slide rod is perpendicularly fixedly connected to the sidewall of an inner cavity of the box body. The environment-friendly wastewater filtering device has the advantages that the environment-friendly wastewater filtering device is simple in structure; a sleeve brush arranged inside the filtering box body is used for sweeping filtered residues; flow dynamic of the filtering device pushes a filtering roller to rotate by passing through a spiral groove in the surface of the filtering roller so as to drive a rotary disk to rotate; through addition of a combined structure of a movable rod, the sleeve brush and the slide rod, the sleeve brush can reciprocate linearly on the slide rod according to a mechanism connection relation of theoretical mechanics, so that dirt of the box body is drained into the drain outlet so as to complete dirt clearing.
Owner:JIANGXI ACADEMY OF SCI

Preparation method of layer-by-layer self-assembled hollow fiber forward osmosis membrane

The invention discloses a preparation method of a layer-by-layer self-assembled hollow fiber forward osmosis membrane. The preparation method comprises the steps of: preparing hollow fiber forward osmosis base film, modifying hollow fiber ultrafiltration base film, repeating layer-by-layer assembly of polycation and polyanion layers, performing interface cross-linking polymerization for preparinga selective functional layer, conducting moisturizing, and carrying out treatment and storage so as to prepare the layer-by-layer self-assembled hollow fiber forward osmosis membrane. The surface of the hollow fiber self-support base film which is prepared by using a phase conversion method is activated firstly, layer-by-layer assembly of polycation and polyanion is repeated on the surface of thefilm so as to form an functional polarization layer for an electrolyte solution, and the polyamide selective layer is prepared through interfacial chemical cross-linking polymerization. The prepared hollow fiber forward osmosis membrane has a controllable thickness and an internal polarization layer with a high charge capacity, and the internal concentration polarization phenomenon can be alleviated effectively during the forward osmosis process; therefore, the hollow fiber forward osmosis membrane can simultaneously obtain high flux and low reverse salt flux, has high filtration separation efficiency, easy cleaning and a long service life, and can be widely applied to seawater desalination and concentration and desalination of brine.
Owner:西安金藏膜环保科技有限公司

High temperature resistant flame retardant filter paper used for diesel filter and preparation method thereof

ActiveCN102877368AHigh temperature resistant and flame retardantBursting strengthPaper/cardboardFiltration separationBursting strengthCellulose
The invention discloses a high temperature resistant flame retardant filter paper used for a diesel filter and a preparation method thereof. The high temperature resistant flame retardant filter paper comprises the following raw materials in parts by weight: 60-70 parts of wood pulp celluloses, 30-40 parts of vinylon fibers, 10-15 parts of glass fibers, 2-5 parts of dolomite dust, 1-3 parts of nanometer titanium dioxide, 2-4 parts of light calcium carbonate, 1-2 parts of modified nano-carbon, 1-2 parts of nanometer titanium oxide, 0.5-0.8 part of ammonium dihydrogen phosphate, 3-4 parts of modified water-soluble phenolic resin emulsion, 2-5 parts of styrene-acrylic emulsion, 0.5-1 part of diethanolamide, 0.5-1 part of silane coupling agent KH550, 0.4-0.8 part of sodium laurylsulfate and 4-6 parts of a wet strength agent. The filter paper, prepared by the invention, has the advantages of good water permeability, large filtering area, small maximum aperture, high filtering precision, strong bursting strength, high temperature resistance and flame resistance, the filtering efficiency is 99.999%, the filter paper has stable performance index at normal temperature and high temperature, and better temperature resistance and filtering effect.
Owner:ANHUI PHOENIX INT CO LTD

Immersion type hollow fiber membrane component and complete equipment thereof

The invention discloses an immersion-type hollow fibrous membrane component and complete equipment thereof and belongs to the technical field of manufacturing a membrane component through water treatment. The immersion-type hollow fibrous membrane component consists of membrane silk bundles, membrane end sockets and a central supporting tube; the membrane silk bundles have at least four bundles and are distributed on the periphery of the central supporting tube; two ends of the membrane silk bundles are provided with one membrane end socket respectively, wherein one membrane end socket is a gas inlet end socket; and the other one is a water producing end socket. A plurality of membrane components can be combined into a small unit and a large unit till membrane stacks on the equipment so as to improve service life of the membrane silk and the membrane component; and the structural design of the membrane component concentrates the advantages that the prior strip curtain-type membrane component is uneasy to pollute and the prior columnar membrane component has large membrane filtering area into a whole and has the advantages of large membrane filtering area, convenient mounting of the membrane component, convenient maintenance and the like.
Owner:XIAMEN LEEBAM MEMBRANE TECH

Unpowered automatic cleaning laminated filter

The invention provides an unpowered automatic cleaning laminated filter, which comprises a shell and a filter element, wherein the shell is a cylinder with end covers at two ends; a water inlet and a water outlet are arranged on the two end covers or at positions close to the end parts of the cylinder; the filter element consists of a group of hollow filter discs and a water outlet core pipe; the hollow filter discs are sleeved on the water outlet core pipe; a distance is kept between each two adjacent hollow filter discs; the effluent of the hollow filter discs flows into the water outlet core pipe; and one end of the water outlet pipe is closed, while the other end is provided with a water outlet, which is connected with the water outlet of the filter or directly serves as the water outlet of the filter. The filter also has a washing device which comprises a cleaning brush holder, a cleaning brush, a driving device and a mounting frame, wherein the mounting frame is connected with the driving device; the cleaning brush is fixed on the mounting frame; the head of the cleaning brush is positioned on the surface of the annular filter discs; and the cleaning device is driven by the driving device to rotate to realize the cleaning of the filter discs. The filter can be used for filtering ship ballast water, cooling water and the like.
Owner:FUJIAN NEWLAND ENTECH CO LTD

High-flux high-dirt-holding-capacity filtering element and preparation method thereof

The invention discloses a high-flux high-dirt-holding-capacity filtering element, which comprises a filtering medium layer (3), a central tube (2), a shell (1) and upper and lower end covers (10, 11), wherein the filtering medium layer (3) is folded into an arc-shaped fold and then encloses the central tube (2), and the whole is cylindrical; the shell (1) is sleeved outside a cylindrical filtering medium; the filtering medium layer comprises a filtering layer (3b) and plastic net layers (8) which are positioned on two sides of the filtering layer; the filtering layer consists of at least two layers of filtering materials (3d); and the upper and lower ends of the central tube (2) and the shell (1) are fixedly connected with the upper and lower end covers. A high-flux folding filtering element is wide in runner, relatively low in fluid resistance, and more uniform in flow distribution of water inlet and outlet ends of the filtering element. Compared with the conventional W-shaped linear fold designing filtration membrane, the high-flux folding filtering element is improved by over 30 percent in terms of filling density, large in filtering area, high in total dirt-holding capacity and long in service life of the filtering element.
Owner:浙江瑞普环境技术有限公司

V shaped groove type microgrid component capable of continuously on-line updating dynamic membrane and use method thereof

The invention relates to a V-shaped slot type micronet assembly and an application method for continuously renewing a dynamic film on line, which comprises a porous filter supporting a dynamic film. The V-shaped slot type micronet assembly is characterized in that the porous filter is a flat-cylindrical micronet net body formed by a plurality of layers of micronets of various calibers which are superposed, fixed into shape and connected sequentially by a plurality of concentric annular V-shaped slots, a sleeve shell is arranged outside the porous filter, and the bottom of the porous filter is hermetically connected with a bottom net; a plurality of closed net chambers internally provided with ceramic granule balls are formed between the micronet net body and the bottom net; the center of the micronet net body is provided with a hollow shaft pipe, a baffle is arranged in the hollow shaft pipe, and the hollow shaft pipe above the baffle is connected with a rotary driving mechanism, a water source and a reverse flushing water pipe with a liquid spray head; the hollow shaft pipe under the baffle is connected with an air source and an air injection pipe arranged under the net body, and 0.5 percent or 1 percent of environment mineral material is added into mixed liquid in application. The invention has the advantages of low manufacturing cost, small size, high flux, good out-water quality, high water-outlet rate, power and control system optimization and simplification, low energy consumption and low cost.
Owner:北京创未环境工程技术有限公司
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