35results about How to "Good filtration and adsorption effect" patented technology

The present invention provides a supported nanometer compound oxide environmental purification material and the preparation thereof, the diatomite and the zeolite are employed as carrier to load one of nanometer TiO2, nanometer ZnO and nanometer CeO2. The preparation method comprises preparing carriers by diatomite and zeolite; preparing compound oxide precursory sol by employing ethanol as medium and the zinc nitrate and/or cerium nitrate and butyl titanate as material; loading the compound oxid precursory sol on the carrier to obtain loading-body; drying, baking and cooling the loading-body to obtain the supported nanometer compound oxide environmental purification material of the present invention which has perfect filter, adsorption, ion exchange, catalytic degradation and antibacterial function, good chemical stability, convenient usage, reclaim and regeneration, safety, innocuity, simple preparation technique and low cost. The supported nanometer compound oxid environmental purification material of the present invention is suitable for batch production and used widely in purifying process of atmosphere and water system.

The invention provides a nano-silver diatomite antibacterial filter core. The nano-silver diatomite antibacterial filter core is prepared from diatomite, a pore forming agent, a sintering aid, a binder and water. A preparation method for the nano-silver diatomite antibacterial filter core comprises the following steps: carrying out purification and fine treatment on diatomite; subjecting diatomite to silver loading; carrying out mixing and grinding solid raw materials until D50 is equal to 1 to 10 mu m; subjecting the ground raw materials to mixing with a liquid raw material; carrying out ageing; subjecting the aged raw materials to die casting or extruding to obtain a filter core blank; and drying and sintering the filter core blank so as to prepare the nano-silver diatomite antibacterial filter core. The nano-silver diatomite antibacterial filter core has good filtration and adsorption performance due to usage of the porous structure of diatomite; after loading of nano-silver on the diatomite and sinter molding, the prepared nano-silver diatomite antibacterial filter core can guarantee microbiological safety of water quality and provide safety guarantee for performance of the functions of a subsequent water purification film when applied to bacterium and turbidity removal of domestic water.

The invention discloses a method for making a polylactic acid fiber filter stick. The method comprises the following steps of: (1) loosening: loosening a polylactic acid fiber cigarette tow by using a filter stick molding machine set, wherein the line density of the polylactic acid fiber cigarette tow is 3.5-5.0Ktex; (2) gluing: spraying a degradable adhesive onto the loosened polylactic acid fiber cigarette tow; (3) molding and cutting down; (4) drying the filter stick; and (5) balancing: putting the dried filter stick into a balance chamber to be balanced more than 6 hours so as to make the polylactic acid fiber filter stick. With the adoption of the method for making the polylactic acid fiber filter stick, the problem of industrial production of the polylactic acid fiber filter stick can be solved, the production can be carried out by only using an existing filter stick molding machine set in market, the smoking taste of the made filter stick is approximate to that of a vinegar fiber stick, and the requirements on use of the cigarette can be met.

The invention relates to a preparation method of polyolefin micro/nano fiber non-woven material. The preparation method comprises the procedures that (1) high polymer and cellulose ester are mixed in the mass ratio of 1:2.3 to 20; then the high polymer and the cellulose ester undergo the process of melt spinning by a double-screw extruder; and the high polymer and the cellulose ester are winded at the winding speed of 300 to 800m/min to form the multi-component fiber of the polyester/cellulose ester that is scattered at a micro/nano scale in a cellulose ester substrate; (2) the cellulose ester in the multi-component fiber of polyester/cellulose ester is removed by acetone solution to acquire the micro/nano fiber aggregate of the high polymer with continuous thermo-plasticity; the fiber aggregate is carded by a carding machine; a net is crosswise made to form a fluffy fiber net; and after being strengthened and molded by aqua tex, pinpricking or thermo-compression, the non-weaving material is made. The preparation method has the characteristics that the method is efficient, controllable and environment-friendly and has high added value. In addition, the preparation method facilitates mass-production and the acquired polyolefin micro/nano fiber non-woven material non-weaving material has an outstanding effect on filtration absorption.

The invention relates to a nanofiber membrane material for filtering M<3+> in water and a preparation method thereof. According to the preparation method, by taking graphene oxide, p-phenolic fluoroboron dipyrrole L, polyvinylpyrrolidone PVP and polyvinyl alcohol PVA as raw materials, micro-nano membrane fiber with high specific surface area and high stability is prepared by a solution jet spinning technology. By virtue of specific coordination recognition of Fe<3+>, Al<3+> and Cr<3+> by the p-phenolic fluoroboron dipyrrole L, the adsorption of the Fe<3+>, the Al<3+> and the Cr<3+> by the nanofiber membrane material is improved; the nanofiber membrane material has excellent effects of filtering and adsorbing the metal Fe<3+>, the metal Al<3+> and the metal Cr<3+> in industrial wastewater;by the preparation method, the production efficiency is high, the production cost is low, a technology is simple, and fiber diameter distribution is uniform; the nanofiber membrane material is high infiltration and adsorption efficiencies, can achieve thorough removal, and is suitable for large-scale industrial production.

The invention discloses a rainwater drainage pipe additionally provided with a filter screen. The filter screen is arranged at the connection portion of an upper pipe half and a lower pipe half, a transverse semipermeable drainage pipe is arranged on the inner wall of a drill hole of the upper pipe half, a water stop material is arranged between the lower half portion of the transverse semipermeable drainage pipe and the lower half portion of the drill hole, multiple independent branch pipes are arranged inside the lower pipe half, each branch pipe is arranged between corresponding adjacent tree-shaped rainwater pipe drainage sub-systems, the multiple branch pipes are connected together for forming a netlike rainwater pipe drainage net, each filter screen is arranged to be of a three-layer structure, an upper filter screen body and a lower filter screen body are each a large-hole steel mesh, and an intermediate filter screen body is provided with an activated carbon adsorption film. By means of a netlike rainwater pipe drainage system, the void volume of pipes on other lines can be utilized sufficiently, high water level pressure can be effectively lowered, the phenomena of ponding can be effectively reduced, and drainage safety and smoothness are improved; the filter screen is good in filtering and adsorbing effect, easy to produce and low in cost, and it is helpful to improve the drainage effect.

The invention relates to the field of filtration and separation, and discloses a glass fiber filter material with positive Zeta potential and a preparation method and application thereof. The glass fiber filter material with the positive Zeta potential comprises a glass fiber filter material body and a cation protection film wrapping the surface of the glass fiber filter material body, the cation protection film endows the surface of the filter material with positive electricity, and a strong adsorption effect on negative charge particles is realized so that the glass fiber filter material not only can intercept particles of which the size is larger than the pore diameter, but also can adsorb particles of which the size is smaller than the pore diameter, and the filtering efficiency of the filter material is greatly improved. In water with the pH value of 7, the positive Zeta potential on the surface of the glass fiber filter material is as high as 200mV, and the filtering efficiency on solid particles with the size of 1 mu m is as high as 99.3%.

The invention discloses a movable newborn clinical monitoring device which comprises an incubator, wherein a limiting seat is arranged at the bottom of the incubator, an electric heating seat is mounted at the bottom of the limiting seat, a telescopic rod is mounted at the bottom of the limiting seat, a base is mounted at the bottom of the telescopic rod, and universal wheels are arranged at the bottom of the base. A sliding rail plate is mounted on the inner side of the base, a limiting sliding plate is slidably connected into the sliding rail plate, and a connecting plate is connected to the top of the limiting sliding plate through a rotating shaft. Through the arrangement of an incubator and a limiting seat, when a worker uses the incubator, the incubator is limited and supported by a buffer rod and a supporting clamp, so that the stability of the incubator in the using process is improved; through the arrangement of universal wheels on the base, the maneuverability of the device is improved, movement is convenient, and therefore the use range of the device is widened. In addition, through the angle change after the linkage plate moves and under the auxiliary action of the telescopic rod, the height of the limiting seat is adjusted.