558 results about "Ultrasonic assisted" patented technology

The invention provides an ultrasonic-assisted red pomelo polyphenol extraction method and application. The polyphenol component in the red pomelo is extracted through the following steps: firstly, performing activation pretreatment on red pomelo dry powder by adopting a low-temperature plasma device, and destroying a cell wall structure so as to improve the accessibility of combined polyphenol; then cellulase, pectinase, hemicellulase and beta-glucosidase are added into a biodegradable deep eutectic solvent to synergistically hydrolyze the cell wall polysaccharide, and combined polyphenol is released; then applying pulse type ultrasonic wave to assist extraction under a low-temperature condition, so that polyphenol is fully dissolved out and enters the eutectic solvent; and finally, carrying out solid-liquid separation to obtain the red pomelo polyphenol extract. Compared with a conventional heat extraction method, the method has the advantages that the extraction rate of the polyphenol of the red pomelo is remarkably increased at a lower temperature, the degradation of the polyphenol is effectively avoided, and the content of the total polyphenol and the antioxidant activity are increased; the method is green and environment-friendly, and can be applied to the health industry as an antioxidant.

The invention discloses a production process of a high-strength anti-corrosion power transmission pole cross arm. The production process comprises the following steps that 1, an anti-SCC aluminum alloy is selected; a trace amount of Sc is added to refine grains, so that the corrosion resistance is improved; cold machining is avoided, and a warm forming process is adopted; 2, aluminum alloy ingot smelting and hot extrusion forming are carried out; 3, T6 solid solution treatment is carried out to improve the strength; 4, the five-axis CNC machining center conducts structural topology optimization cutting; the surface roughness Ra of a key bearing part is less than or equal to 0.8 mu m; an ultrasonic-assisted drilling technology is adopted; step 5, micro-arc oxidation; and step 6, ultrasonic flaw detection and infrared thermal imaging. The 5083-H116 aluminum alloy is combined with Sc microalloying, precision machining and micro-arc oxidation technologies, so that the stress corrosion resistance is improved by 3 times, the fatigue life is prolonged by 2-3 times while the tensile strength of the power transmission pole cross arm is kept to be larger than or equal to 350 MPa, 5000-hour salt mist protection and 30-year maintenance-free are achieved, and the service life of the power transmission pole cross arm is prolonged. The problems of corrosion cracking, short fatigue life and insufficient durability of a traditional product in a harsh environment are comprehensively solved.

The invention discloses an electric engine assembly integral forming process based on precision integral casting, which comprises the following steps: designing a split type precision mold through computer aided design software, and carrying out nitriding treatment to improve the performance; selecting a specific aluminum alloy raw material, performing vacuum induction melting and refining, and injecting the aluminum alloy raw material into a preheated and sprayed mold cavity in a low-pressure casting manner; and demolding after air cooling and water cooling are combined, then after-treatment procedures such as deburring and heat treatment are conducted, and finally detection and assembly are conducted. A conformal cooling water channel design and an ultrasonic-assisted smelting technology are adopted in the process innovation, and the casting process is monitored in real time. According to the process, manufacturing procedures are reduced, compared with a traditional mode, the production efficiency is improved by 30%-50%, the cost is reduced by 20%-30%, the assembling problem is effectively avoided, the sealing performance and reliability of the electric engine are improved, the service life of the electric engine is prolonged, high integration is achieved, and the modern industrial requirement is met.

The invention discloses a preparation method and application of organic peptide salt in the field of organic peptide salt, and the preparation method comprises the following steps: step 1) extraction of azolla filliculoidas active peptide: performing crushing, enzymolysis or ultrasonic-assisted extraction on azolla filliculoidas raw materials to obtain an azolla filliculoidas active peptide crude extract; and (2) purifying the rumex hanus active peptide. According to the method, the azolla filliculoidas active peptide is subjected to graded purification by adopting an ultrafiltration membrane separation technology, an active peptide component with uniform molecular weight distribution is obtained, and a high-quality raw material is provided for subsequent reaction; organic acid selection and reaction conditions are optimized, the yield and purity of the organic peptide salt are remarkably improved by selecting specific organic acid and optimizing the reaction conditions, ultrasonic-assisted reaction is introduced, the uniformity and efficiency of the reaction are improved through the ultrasonic-assisted reaction, and the stability and functionality of the organic peptide salt are further enhanced. The prepared organic peptide salt is not only suitable for the field of food, but also can be widely applied to health care products and cosmetics, and has remarkable market potential.

The invention belongs to the technical field of additive manufacturing, and particularly relates to a strong electromagnetic pulse-ultrasonic auxiliary electric arc additive manufacturing platform. The platform body is provided with an upper substrate used for providing an initial plane for electric arc additive manufacturing; the water cooling device comprises a water cooling box used for containing cooling water, and the substrate is contained in the water cooling box; the base plate locking clamp comprises a positioning clamping table and a clamping device. The positioning clamping table and the clamping device are arranged on the two sides of the upper base plate and matched to form a fixing structure for fixing the relative positions of the upper base plate and the platform body. The welding gun head is connected with the six-axis mechanical arm and is used for carrying out additive manufacturing on the upper substrate; the clamping device and the welding gun head are arranged on the two opposite sides of the upper base plate in a spaced mode. And the clamping device is partially arranged outside the water cooling box. The clamping device and the welding gun head are arranged on the two sides of the water cooling box respectively, space interference between the clamping device and the welding gun head in the working process can be effectively avoided, meanwhile, a principle heat source of the clamping device can be guaranteed, and normal work of the clamping device is guaranteed.

The invention relates to a soil pesticide residue detection method, system, equipment and medium, and relates to the technical field of intelligent detection.The method comprises the following steps that a to-be-detected soil sample is subjected to ultrasonic-assisted extraction, and a pesticide extracting solution is obtained; separating and detecting the extracting solution by using a liquid chromatograph to obtain a pesticide chromatographic peak, and performing integral calculation on concentration data; calculating the adsorption capacity based on the concentration data, generating a pesticide distribution diagram, and obtaining a pollution range diagram through spatial interpolation; determining a pesticide degradation rate according to the pollution range map, obtaining half-life period data, and further calculating an exposure dose; residual toxicity effect analysis is carried out based on the exposure dose, a toxicity effect score is obtained, a corresponding soil remediation scheme is formulated according to the score, and the technical problem that pollution risk assessment is lagged due to the lack of pesticide adsorption behavior in soil in the traditional technology is solved.

The invention discloses a preparation process of open-cell organic silicon foam, and aims to solve the problems of non-uniform pore structure, low aperture ratio and difficulty in performance balance in the prior art. The process comprises the following steps: optimizing parameters through bubble nucleation, pore connectivity and a mechanical property model; preparing a composite raw material containing polysiloxane, a fluorine-containing monomer, nano silicon dioxide and hollow microspheres; dynamic pressure circulation and ultrasonic-assisted pre-foaming are adopted; performing staged gradient foaming and curing; and carrying out vacuum post-treatment and plasma surface modification. According to the invention, accurate regulation and control of multi-scale pores are realized, air permeability, mechanical properties and hydrophilicity are significantly improved, heat insulation and high temperature resistance are accidentally improved, process efficiency is improved, by-product emission is reduced, and the method is suitable for the fields of aerospace, filtration and biomedicine.

The invention discloses an indoor navigation positioning precision improving method and system based on a filtering algorithm, and relates to the technical field of signal processing. The method comprises the following steps: suppressing signal fluctuation and multipath interference by adopting a Bluetooth positioning technology in combination with a segmented power law regression model and Kalman filtering; ultrasonic-assisted positioning is introduced, the distance is calculated through the time difference between pulses and Bluetooth, and the anti-interference capability is improved in cooperation with temperature correction and spectral analysis; multi-mode dynamic fusion is carried out, when shielding is little, Bluetooth positioning is corrected through high-precision ultrasonic waves, when shielding is serious, Bluetooth data is smoothed through moving average, and positioning coordinates are optimized in combination with a least square method; a base station and a reference object are marked through a vector map, the position of a terminal is dynamically displayed, and positioning reliability is visually presented through an error semitransparent circle; a positioning base station array, a mobile terminal and a rear-end processing module are integrated, and low-power-consumption multi-mode fusion positioning is achieved. The method reduces the positioning error in a complex indoor environment, and is suitable for scenes such as personnel / equipment real-time tracking.

The invention discloses a PVDC (polyvinyl dichloride) coating high-brightness BOPP (biaxially-oriented polypropylene) cigarette film and a preparation method thereof, and belongs to the technical field of packaging materials. The smoke film comprises a BOPP (biaxially-oriented polypropylene) base material layer and three layers of gradient PVDC (polyvinyl dichloride) coatings coated on the surface of the BOPP base material layer, wherein the three layers of gradient PVDC coatings sequentially comprise a bottom adhesive layer, a middle barrier layer and a surface functional layer from bottom to top. The bottom adhesive layer adopts PVDC emulsion and an organic silane coupling agent KH-560, so that the binding force with a base material is enhanced; the middle barrier layer adopts high-molecular-weight PVDC and nano silicon dioxide to form a maze effect to provide main barrier performance; and the surface functional layer adopts PVDC, an acrylate copolymer and an antistatic agent, so that the glossiness and the processability are improved. The preparation method adopts an ultrasonic-assisted coating technology, an electrostatic field-assisted leveling technology, a four-stage drying technology and a dynamic tension compensation technology. The prepared product coating is uniform, compact and free of defects, the oxygen permeability is as low as 4.8-9.2 cubic centimeters per square meter per 24 hours per standard atmospheric pressure, the glossiness reaches 86-95 GU, a traditional double-layer packaging structure can be directly replaced, and the cost is reduced by 20% or above.

The invention discloses equipment and a process for efficiently and continuously extracting astaxanthin by a low-frequency microwave-assisted eutectic solvent method, and belongs to the technical field of bioactive substance extraction. The method for extracting astaxanthin by the low-frequency microwave-assisted eutectic solvent method comprises the following steps: performing low-frequency microwave pretreatment on a eutectic solvent to obtain a high-temperature pretreated eutectic solvent; cooling the pretreated eutectic solvent, then mixing the pretreated eutectic solvent with crustacean byproducts, performing eutectic solvent extraction treatment, performing ultrasonic-assisted extraction in the process, and then performing solid-liquid separation to obtain filtrate; mixing the filtrate with an extraction solvent, and extracting to obtain an extraction solvent phase containing astaxanthin and a eutectic solvent phase; and removing the extraction solvent in the extraction solvent phase containing the astaxanthin to obtain an astaxanthin product.

The application provides a multi-wire submerged arc welding method and device for straight-seam steel pipes, and belongs to the technical field of welding. The method comprises the following steps: adopting a multi-wire submerged arc welding process to perform double-sided submerged arc welding on a straight-seam steel pipe, and when welding an outer weld, an ultrasonic auxiliary device arranged at the back of a molten pool generates ultrasonic waves and inputs the ultrasonic waves into the molten pool through a horn, so that the formation of intergranular ferrite in the weld zone is inhibited, the content of intragranular acicular ferrite is increased, and the toughness and hydrogen brittleness resistance of the weld zone are improved. The device comprises a three-wire submerged arc welding device, an ultrasonic auxiliary device and a telescopic cantilever beam; the ultrasonic auxiliary device is installed at the front end of the telescopic cantilever beam and comprises three ultrasonic transducers arranged side by side; a horn is installed at the output end of the ultrasonic transducer; the ultrasonic transducer generates ultrasonic waves and inputs the ultrasonic waves into the molten pool through the horn. The application solves the problems that the existing ultrasonic auxiliary arc welding cannot control the content of acicular ferrite and the effect of reducing residual stress in the weld zone is not obvious.

The invention discloses a method for impregnating coffee beans with fructose under the assistance of ultrasonic waves, and relates to the technical field of food processing, and the method is technically characterized by comprising the following steps: selecting Robursta coffee beans with the moisture content of 10-12%; mixing with a 5% fructose solution according to a solid-liquid ratio of 1: 4, treating for 5-20 minutes (preferably 5 minutes) under ultrasonic waves of 40 kHz and 120 W, and totally impregnating for 4 hours; performing forced air drying at 40 DEG C for 23h until the water content is 10- And baking at the temperature of 175 DEG C for 7-8 minutes. A honeycomb net structure is formed on the surface of the coffee beans through ultrasonic treatment, the total sugar content is remarkably increased to 54.65 mg / g, amino acid composition is affected, and bioactive substances such as polyphenol and flavone are increased. The score of the baked coffee beans is more than 72 (the score of the coffee beans is 74.92 after the coffee beans are subjected to ultrasonic treatment for 5 minutes) through an SCA cup test, and the coffee beans have caramel fragrance, nut fragrance and smoother mouth feel. The method is simple and convenient to operate, low in cost and capable of effectively improving the flavor quality of the Robursta coffee.

The invention relates to the technical field of chemical mechanical polishing, in particular to an immersed double-frequency ultrasonic-assisted chemical mechanical polishing device which comprises a polishing pool with an upward pool opening. Two front supports which are distributed left and right are mounted on the front inner side surface of the polishing pool; a driving motor A with a rightward output shaft is mounted on the left outer side face of the polishing pool, and the output shaft of the driving motor A rotationally penetrates through the left side wall of the polishing pool and the front support close to the left; the right end of an output shaft of the driving motor A is connected with a driving roller, and the right end of the driving roller is rotationally supported on a front support close to the right; two rear supports which are distributed left and right are mounted on the rear inner side surface of the polishing pool; a driven roller is rotationally supported between the two rear supports; and a polishing belt is assembled on the driving roller and the driven roller together. The invention solves the problems of low polishing speed, poor surface quality after polishing, low polishing qualification rate and poor stability in the polishing process in the existing chemical mechanical polishing technology, and is suitable for the fields of semiconductor manufacturing, optical device processing and the like.

The invention relates to the technical field of preparation processes, and discloses ancient Huangtai liquor, which is prepared from the following components in percentage by weight: 50 to 55 percent of base liquor, 10 to 15 percent of medicinal and edible traditional Chinese medicinal material extract, 2 to 4 percent of honey, 0.1 to 2 percent of flavor regulator and the balance of purified water, the medicinal and edible traditional Chinese medicinal materials comprise at least one of angelica sinensis, lily, radix ophiopogonis, Chinese dates, Chinese wolfberry fruits, American ginseng, rhizoma polygonati, papayas, astragalus membranaceus and poria cocos, and the liqueur is prepared through the processes of stepped extraction, compound blending, ultrasonic-assisted homogenization, dynamic ageing and membrane filtration. According to the invention, through a stepped extraction process, temperature and time are regulated and controlled in stages, volatile components are preferentially extracted at low temperature, and then non-volatile substances are extracted at medium temperature, so that effective components in the traditional Chinese medicinal materials are fully extracted, the natural flavor of the traditional Chinese medicinal materials is retained, the extraction rate of the effective components is improved, and the flavor level of the liqueur is enriched.

The invention relates to the technical field of barium chloride production and preparation, in particular to a purification method of electronic-grade barium chloride, which comprises the following steps: S1, washing witherite tailing barium slag with hydrochloric acid to obtain barium-containing filter residue; s2, mixing the barium-containing filter residues with hydrochloric acid, and performing leaching treatment to obtain a crude barium chloride product; s3, dispersing the barium chloride crude product in water, adjusting the pH value of the solution, adding an impurity removal agent, carrying out ultrasonic-assisted segmented temperature control treatment, and filtering to obtain a barium chloride solution; and S4, adding a crystal form control agent into the barium chloride solution, and performing programmed cooling crystallization under the action of a low-intensity direct-current electric field to obtain the electronic-grade barium chloride. According to the technical scheme, efficient conversion and precise impurity separation of the barium slag difficult to treat are achieved, the technical problems that in a traditional method, the barium recovery rate is low, impurity removal is difficult, and the product purity is unstable are solved, and the resource utilization rate of barium is remarkably increased.

The invention provides a production device and process for increasing the content of magnesium citrate crystals. The problems that in the prior art, the impurity co-crystallization rate is high, and crystal forms are difficult to control are solved. The device comprises a gradient temperature control multi-stage crystallization device and a crystal form directional regulation and self-adaptive separation system. The gradient temperature control multi-stage crystallization device is composed of a main crystallizer, a gradient temperature control system, an ultrasonic-assisted system and a liquid phase partition circulating system, and the crystallization environment is accurately controlled through the temperature gradients of five independent temperature zones. The crystal form directional regulation and self-adaptive separation system is composed of a seed crystal dynamic inoculation device, an electric field auxiliary directional crystallization system, a real-time crystal morphology analysis system and a self-adaptive separation system, and the crystal morphology and particle size distribution can be accurately controlled. According to the process disclosed by the invention, the main content of magnesium citrate is increased to 98.8 + / -0.3%, heavy metal impurities and organic impurities are respectively reduced by 70% and 75%, the crystal form consistency is increased to 96 + / -2%, the production period is shortened by 33%, and the process has remarkable economic benefits and social benefits.

The invention relates to the technical field of rice seed germination accelerating systems and methods. Seed selection is conducted, specifically, rice seeds which are full and free of damage are screened, and impurities are removed; the rice seeds are soaked in a plant growth regulator mixed solution to be subjected to oscillation treatment, the mixed solution is composed of gibberellin with the concentration being 20-50 mg / L, pimacol with the concentration being 5-15 mg / L and polyoxyethylene lauryl ether with the concentration being 0.01-0.03%, the liquid temperature is kept at 30 + / -2 DEG C, and the treatment time is 2-4 hours; gradient disinfection: primary disinfection: putting the pretreated seeds into a 0.3-0.5% hydrogen peroxide solution at the temperature of 40-50 DEG C, and stirring for 15-20 minutes; secondary disinfection: transferring to a 0.8-1.2% sodium hypochlorite solution at the temperature of 25-30 DEG C, adding a 0.05-0.1 mol / L phosphate buffer solution to adjust the pH value to 6.8-7.2, and standing for 40-60 minutes; the disinfected seeds are put into magnetized water containing 0.1%-0.3% of chitosan derivatives and 0.05%-0.15% of sodium alginate, the magnetic field intensity ranges from 300 gauss to 500 gauss, and ultrasonic waves of 30 kHz to 50 kHz are adopted for assisting permeation for 1 h to 2 h; the rice seed germination accelerating system and method are high in germination accelerating efficiency.

The invention discloses a device for ultrasonic-assisted additive manufacturing of a metal workpiece, and relates to the field of laser additive manufacturing, the device comprises a circular base plate, a plurality of transducers, a synchronous stretching mechanism, a supporting box, a vibration isolation mechanism, a bearing air cylinder, a first driving motor and an ultrasonic generator, the supporting box is rotationally installed on the vibration isolation mechanism, the first driving motor is used for driving the supporting box and the circular base plate fixed to the supporting box to rotate, and the bearing air cylinder is installed on the equipment base and located on the inner side of the vibration isolation mechanism. The piston end of the bearing air cylinder penetrates through the supporting box and then is connected with the synchronous stretching mechanism through a thrust bearing, the energy converter is installed at the movable end of the synchronous stretching mechanism through a floating constant force connector, and the energy converter is connected with an ultrasonic generator through a high-frequency coaxial cable. The mechanical property of the annular rotary part during laser additive manufacturing can be improved by synchronously changing the position of the transducer.

The invention discloses aerogel thermal-insulation waterproof mortar and a preparation method thereof. The mortar is prepared from cement, hydrophobic aerogel, interface modified asphalt rubber powder, a composite phase change heat conduction material, blast furnace slag micro powder, silica fume, nano montmorillonite, titanium dioxide aerogel powder, expanded vermiculite, shape memory polymer emulsion, chitosan, charcoal powder, carbon fibers, basalt fibers and the like. The preparation method comprises the following steps: carrying out plasma treatment and modification with an organosilicon waterproofing agent to obtain hydrophobic aerogel; carrying out interface modification on the asphalt rubber powder by adopting a titanate coupling agent; a phase change microcapsule-carbon nanotube heat conduction network is constructed through ball milling compounding; a basic framework is formed by adopting a graded mixing process, and then functional components are introduced; and finally, realizing cross-linking curing of the shape memory polymer and the chitosan through ultrasonic assistance and programmed temperature control. The mortar prepared by the invention realizes integration of multiple functions, and effectively solves the technical problems of single performance and poor durability of a traditional thermal insulation material.

The invention belongs to the field of high-purity indium preparation, and provides a method for preparing high-purity indium based on ultrasonic vacuum distillation-electromagnetic pulse zone melting purification, the method combines vacuum distillation and zone melting purification technologies, ultrasonic waves are applied in the vacuum distillation process to assist in removing low-boiling-point impurities such as Cd, Zn and the like, and the purity of the high-purity indium is improved. In the zone melting process, pulse current is applied through an induction coil to assist in removing impurities mainly including Sn, Pb and Fe, and stable preparation of a high-purity indium product with the purity larger than or equal to 99.9995% and the oxygen content smaller than or equal to 2 ppm is achieved by screening and controlling technological conditions. According to the method, the requirement for the purity of the raw material indium is low, and the preparation cost of a high-purity indium product can be reduced.

The invention discloses an ultrathin polyamide composite membrane assisted by a micron bubble space template strategy as well as a preparation method and application of the ultrathin polyamide composite membrane. The method comprises the following steps: firstly, adding a micron bubble precursor into a neutral / acidic aqueous solution, and generating micron bubbles by utilizing reaction between the precursor and the neutral / acidic aqueous solution or self-decomposition of the precursor; then, covering the water solution with an organic phase solution, and promoting the transmission of the micron bubbles from the water solution to the organic phase solution under the assistance of ultrasonic waves; and finally, under a free interface polymerization process, the diffusion path and the diffusion rate of a water-phase monomer in an interface reaction area are effectively limited by utilizing the steric hindrance effect of micron bubbles on the interface organic phase side, a polyamide separation layer with an ultrathin structure is constructed, the transmembrane transmission resistance of water molecules is effectively reduced, the mass transfer path of the water molecules is shortened, and the separation efficiency is improved. The water flux of the composite membrane is obviously improved.

The invention discloses a preparation method and application of a blueberry anthocyanin extract, and belongs to the technical field of natural product extraction. The preparation method comprises the following steps: mixing blueberry pomace powder and water according to a solid-liquid ratio of 1: (10-50), exhausting, performing ultrasonic-assisted extraction, adding hemicellulase accounting for 0.6-1.4% of the mass of the pomace powder, extracting at 40-60 DEG C for 1-4 hours, and finally centrifuging to obtain a blueberry anthocyanin extracting solution. According to the method, the blueberry pomace is cooperatively treated by ultrasonic waves and hemicellulase, so that the defects of low efficiency and easy degradation of anthocyanin in a traditional extraction method are overcome, and the method has the outstanding advantages of high extraction rate, good activity maintenance and green and environment-friendly process. The obtained extract shows excellent DPPH and ABTS < + > free radical scavenging ability, and can be widely applied to functional food, health care products and cosmetics as a natural antioxidant.

The invention belongs to the technical field of coal washing flotation reagents, and discloses a synthesis process of an environment-friendly coal washing flotation reagent foaming agent, and the synthesis process comprises the following steps: composite reaction; water phase fusion; according to the method, biodegradable alcohols such as pentanol and sec-octanol are adopted as main raw materials, and poloxamer and glycerol are matched, so that the problem of toxic residue of a traditional hydrocarbon foaming agent is avoided. In the synthesis process, low-boiling-point impurities are removed through molecular sieve filtration and a rotary evaporator, it is ensured that the purity of the raw materials is larger than or equal to 99.5%, the proportion of the final product deionized water reaches 40-50%, the use amount of an organic solvent is greatly reduced, nanoscale wrapping of alcohol molecules by an emulsifier OP-10 is achieved through a gradient water adding method and an ultrasonic-assisted emulsification technology, and the content of the alcohol molecules is reduced. And a microemulsion structure with high interfacial film strength is formed. After lauryl sodium sulfate is added as an auxiliary emulsifier, the strength of an oil-water interfacial film is improved by 30% or above, and the half-life period of foam is prolonged to 1.8 times of that of a traditional process.

The invention discloses a green method for preparing bakuchiol and application of bakuchiol in oxidation resistance. The invention provides a green method for preparing bakuchiol, aiming at the problems of low extraction rate, large loss of active ingredients, harm to health due to solvent residue, complicated extraction process and the like in the current bakuchiol extraction process, a deep eutectic solvent is used as an extraction medium, and a fructus psoraleae extract is extracted under the assistance of ultrasonic waves. The bakuchiol is further obtained through macroporous resin purification and separation, and the bakuchiol prepared by the method has remarkable antioxidant activity. According to the preparation method provided by the invention, the extraction content of the bakuchiol is remarkably increased, the problems existing in a traditional extraction process are solved, compared with a traditional organic solvent extract, the preparation method is simple and easy to operate, and the prepared bakuchiol is high in content, better in biological activity, green, safe, free of solvent residues and suitable for industrial production. The compound can be used for preparing more antioxidant drugs.

The invention discloses a polyetherketoneketone fiber anti-adhesion porous spinning method. The method comprises the following steps: dissolving polyetherketoneketone to obtain a spinning solution, and extruding the spinning solution through a porous spinneret plate to form a plurality of spinning trickles; the trickles enter a first coagulating bath to be preliminarily coagulated and formed, and fibers are obtained; dividing the fibers by a split type dividing plate, guiding the fibers into a second coagulating bath by a godet, washing with water, applying oil, and then drying; fibers enter the hot drafting device to be subjected to multi-stage hot drafting, and after heat setting, the fibers are tidied and wound by the buncher. The first coagulating bath is provided with a bath lotion supplementing unit, a circulating filtering system and an ultrasonic generator which are combined to quickly and uniformly update components of the coagulating bath; and the split type filament separating plate keeps a distance between fibers, prevents mutual adhesion and improves the double-diffusion efficiency in the second coagulating bath. The ultrasonic-assisted circulating filtration system is used for updating the synergistic effect of the coagulating bath and the split type filament separating plate, so that the problems that fibers are easy to adhere and are uneven in evenness and performance are effectively solved.

The application discloses a biological enzyme degreasing treatment method for reducing down feather peculiar smell, which comprises the following steps: raw material down feather pre-finishing, pre-wetting, pulse negative pressure penetration, controlled protease pretreatment, lipase deep degreasing, intermittent low-energy ultrasonic assisted migration, warm water rinsing, cyclodextrin inclusion peculiar smell, weak acid recovery, limited fat supplementing and dehydration low-temperature drying. The application discharges the air in the down feather through pulse negative pressure and promotes the treatment liquid to enter the deep layer of the down feather, improves the contact ability of the lipase and the residual lipid through the protease pretreatment, promotes the oil hydrolysis and migration through the lipase and low-energy ultrasonic, and reduces the residual fat and the aftertaste risk through the cyclodextrin inclusion of volatile peculiar smell substances such as fatty acids, aldehydes and ketones, the weak acid recovery and the fat supplementing treatment, reduces the damage of strong alkali washing to the down feather, maintains the down feather fluffiness, softness and fiber integrity, and is suitable for industrial degreasing and peculiar smell removing treatment of the down feather.

The utility model discloses a viscous protein filtering device, which relates to the technical field of egg liquid filtering and comprises a shell, a feed port, a waste outlet, a discharge port, a primary filter element assembly, a rotary filtering assembly, a cooling liquid circulating device, a buffer cavity, a graded filter element assembly, an ultrasonic-assisted filtering device and the like. Through the synergistic effect of multi-stage filtering devices of the first-stage filter element assembly, the rotary filtering assembly and the grading filter element assembly, large impurities are rapidly treated in the rough filtering stage, overload of the fine filtering assembly is avoided, step-by-step fine filtering is achieved, the problem of low efficiency caused by direct treatment of viscous materials through a single-stage high-precision filter membrane is solved, and the working efficiency is improved. A rotating shaft in the rotary filtering assembly rotates at a high speed to generate centrifugal force, spiral guide blades synchronously rotate along with the rotating shaft to form spiral downward fluid motion, the centrifugal force pushes liquid to be rapidly filtered, the spiral blades synchronously stir to avoid local impurity accumulation, dynamic filtering and instant cleaning circulation are formed, and the filter element blocking period is delayed.

The application relates to a super-hydrophobic cotton fabric and a preparation method thereof. The fabric can be prepared by the following method: firstly, a pore-forming agent and polystyrene are dissolved in dimethylformamide to prepare a spinning solution; secondly, the cotton fabric is pretreated; thirdly, the spinning is performed by using an electrostatic spinning technology; and finally, the super-hydrophobic cotton fabric is prepared by washing under the assistance of ultrasonic waves. The super-hydrophobic cotton fabric prepared by the application contains the hydrophobic material polystyrene on the surface, the apparent contact angle of water drops on the surface of the cotton fabric ranges between 151 DEG and 154 DEG, the super-hydrophobic property is very good, the hydrophobic property of the cotton fabric is not obviously weakened after 10 times of washing, and this indicates that the hydrophobic material polystyrene can be firmly attached to the surface of the cotton fabric.

The invention relates to the technical field of biology, and discloses high-activity black fungus dry powder as well as a preparation and a preparation method thereof, and the black fungus dry powder is prepared by the following steps: selecting high-quality black fungus in northeast as a raw material, and performing primary washing, fine washing, color protection and draining pretreatment at normal temperature in a dark place; carrying out compound enzymolysis by using cellulase and pectinase under a low-temperature acidic condition; power frequency ultrasonic-assisted extraction is set; drying under a vacuum freezing condition until the moisture is less than or equal to 8%; according to the process disclosed by the invention, the raw materials are selected, and multi-step cooperative treatment of low-temperature enzymolysis wall breaking, ultrasonic enhanced mass transfer, vacuum freeze-drying keep-alive and sterile post-treatment is combined, so that active ingredients of polysaccharide, melanin and triterpenoids are fully reserved, and the process is simple and convenient to operate, low in cost and suitable for large-scale production. Therefore, the extraction efficiency and bioavailability are improved, the hygienic safety and storage stability of a finished product are guaranteed, and a foundation is laid for subsequent development of diversified black fungus preparations.

The invention provides a meat preservation method with self-assembled nanoparticles cooperating with a three-layer controlled release film. The method comprises the following steps: S1, selecting fresh meat, removing impurities, cleaning, detecting the muscle fiber density and the total number of initial bacterial colonies, classifying the meat into I / II / III classes according to the standard, and pre-cooling and discharging acid for 18-24 hours under the conditions that the temperature is 0-2 DEG C, the air speed is 0.3-0.5 m / s and the humidity is 85-90%; s2.2, graded loading of dormant-state self-assembled nanoparticles at the temperature of 2-4 DEG C, I-type dip coating, II-type ultrasonic-assisted dip coating, III-type high-pressure atomization spraying and air drying in a blast environment after loading; s3, filling three layers of controlled release films, vacuumizing to-0.095 to-0.09 MPa, keeping for 20 seconds, filling customized controlled atmosphere according to grades, and then performing heat sealing; and S4.0, refrigerating at 0-4 DEG C. By constructing a synergistic mechanism that the self-assembled nano-particle adsorption layer recognizes a decay signal in a close range and the three layers of controlled release films release drugs in a linkage mode and strengthen barrier, the limitation that traditional preservation is passively inhibited and active ingredients are lost quickly is broken through, and the technical problems that bacteriostasis is not lasting, the water-retaining property is poor and sensory quality is prone to deterioration are fundamentally solved; and the fresh-keeping efficiency and the meat quality are both improved.