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212results about How to "Solve uneven distribution" patented technology
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Method for preparing sharp type epoxide resin binding agent diamond abrasive tool
ActiveCN103056788AImprove bindingInhibit sheddingAbrasion apparatusGrinding devicesFirming agentEpoxide
The invention discloses a method for preparing a sharp type epoxide resin binding agent diamond abrasive tool. A working layer is mainly made of diamond abrasive, an epoxide resin binding agent, a curing agent, an auxiliary abrasive, a filler and an auxiliary assistant. The method comprises steps of uniformly mixing 5-20 parts by mass of self-sharpening diamond, 5-28 parts by mass of auxiliary abrasive, 10-40 parts by mass of filler and 0.5-10 parts by mass of auxiliary assistant through a machine; uniformly mixing the mixture, 17-25 parts by mass of liquid epoxide resin and 5-25 parts of curing agent; injecting the fluid mixture to a plastic die through a pouring mode; and obtaining the sharp type epoxide resin binding agent diamond abrasive tool after curing. Compared with the method for preparing the abrasive tool through hot press molding, the method has the advantages that the process is simple, the energy is saved, the emission is reduced, the pollution of solid powder on the environment is reduced, the method is environment-friendly, the production speed is quick, the sharpening degree is high, the self-sharpening performance is good, the polishing effect is good and the service life is long.
Owner:惠安宇信金刚石工具有限公司
Blockchain-based domain name resolution system
ActiveCN108064444AImprove management efficiencyEfficient managementSecuring communicationChain networkChain link
Owner:PEKING UNIV SHENZHEN GRADUATE SCHOOL
Ultrasonic welding method of Al/Ti dissimilar metal TIG (Tungsten Inert Gas) electrical arc micro-melting brazing and following welding
The invention provides an ultrasonic welding method of Al / Ti dissimilar metal TIG electrical arc micro-melting brazing and following welding, wherein an isochronous and stable ultrasonic vibration system is added in the TIG micro-melting brazing process, and the simultaneous and equi-directional welding of TIG micro-melting brazing and following welding is realized through a spherical interlinking device. The method comprises the following steps of: enabling a welding gun tungsten electrode and a test piece to reach reasonable welding height by vertically adjusting the position of a welding gun; enabling a continuous vibration ball to cling to the surface of the test piece by vertically adjusting an ultrasonic transmitting device; measuring the distance d from the contact point of the continuous vibration ball and the surface of the test piece to a TIG welding gun tungsten electrode by horizontally adjusting an ultrasonic generating device to enable d to satisfy welding requirements; and reasonably matching an ultrasonic vibration device and a TIG welding gun by adjusting d, and adjusting the acting position of ultrasonic vibration by adjusting d. The invention has strong process applicability and good stability, realizes the semi-automatic welding of Al / Ti dissimilar metal connection, and has wider usability and good improving action for the welding joints of TIG micro-melting brazing for various dissimilar metals.
Owner:HARBIN INST OF TECH
Coating device and method for forming pole piece of lithium battery
InactiveCN102039255ASolve uneven distributionImprove stabilityLiquid surface applicatorsCoatingsWater bathsSlurry
The invention provides an extrusion coating device and method for forming a pole piece of a lithium battery. The device comprises a support, a coating mould, a coating roll and a feeding device and further comprises a water bath jacket and a vacuum auxiliary device, wherein the coating mould, the coating roll and the feeding device are arranged on the support; and the extrusion coating method is as follows: utilizing the feeding device to feed slurry to a slurry cavity positioned in the coating mould, applying pressure on the slurry, leading the slurry in the slurry cavity to be extruded from a slit nozzle at the front end of the coating mould, and coating the slurry on the surface of a base material drawn by the coating roll so as to form the coating layer. By utilizing the invention, the problem that the distribution of the coating layer formed on the base material after the slurry is coated is not uniform can be solved, the stability of loading capacity of the coating layer is improved and the adhesive force between the coating layer and the base material is improved.
Owner:FUJIAN NANPING NANFU BATTERY
Real-time information-based metro passenger service system
ActiveCN104408082ASolve uneven distributionAct as a guideForecastingGeographical information databasesTime informationMetro station
The invention relates to a real-time information-based metro passenger service system. Mobile terminal equipment automatically connects wireless sensors in a metro station and in metro compartments so as to perform data interaction with the servers to acquire relevant information in the metro station in real time, and the relevant information is used for passengers to view in real time; moreover, a heuristic search strategy based on the estimated arrival time of a metro, running time between stations, the current passenger flow information of the metro station and passenger flow information in each metro compartment is proposed, and therefore the optimal proposed ride scheme is obtained, and meanwhile, a time-optimal and distance-optimal scheme is obtained for the passengers to select; after the scheme is determined, according to the position conditions of the current passengers, a prompt of the next route is provided in real time; the passenger flow conditions of the compartments are determined according to the information of the wireless servers of the metro which is about to arrive, and the best waiting position proposal can be given by the system; after the passenger ride, prompt contents, including the time that the metro is about to arrive the next station, the get-off station and the get-off time of the passengers are given in real time, the exit scheme of the metro station and corresponding map information, can be given in real time.
Owner:大连海天兴业科技有限公司
Control method and device for air conditioner running modes
ActiveCN105371416AUniform temperature distributionEvenly distributedSpace heating and ventilation safety systemsLighting and heating apparatusEngineeringEnvironmental temperature
The invention discloses a control method and device for air conditioner running modes. The control method for air conditioner running modes includes the steps that the environment temperatures in multiple areas in the space where an air conditioner is located are detected; whether the environment temperatures in the multiple areas are uniformly distributed or not is judged; if it is judged that the environment temperatures in the multiple areas are not uniformly distributed, the air conditioner is controlled to run in the first energy-saving mode, wherein the first energy-saving mode is used for adjusting the non-uniform temperature distribution in the multiple areas into uniform temperature distribution; and if it is judged that the environment temperatures in the multiple areas are uniformly distributed, the air conditioner is controlled to run in the second energy-saving mode, wherein the second energy-saving mode is used for keeping the uniform temperature distribution in the multiple areas. By means of the control method and device for the air conditioner running modes, the problem that in the relevant technology, the refrigerating capacity or the heating capacity of air conditioners cannot be reasonably allocated, and accordingly environment temperature field distribution is not uniform is solved.
Owner:GREE ELECTRIC APPLIANCES INC OF ZHUHAI
Preparation method of low-cost hollow spherical YSZ powder for plasma spraying
The invention provides a preparation method of a low-cost hollow spherical YSZ powder for plasma spraying, comprising the following steps: 1, adding yttrium salt and zircon salt in proportion into deionized water and stirring until yttrium salt and zircon salt are completely dissolved so as to obtain a mixed solution; 2, carrying out coprecipitation treatment, filtering and drying so as to obtain a solid mixture; 3, carrying out a hydrothermal reaction to obtain a hydrothermal reaction product; 4, successively carrying out filtration, washing and drying on the hydrothermal reaction product, and carrying out ball-milling on the hydrothermal reaction product, deionized water, a binder and a dispersant and uniformly mixing to obtain a slurry; 5, adjusting pH value and carrying out spray-drying treatment to obtain aggregates; and 6, sintering and screening to obtain the low-cost hollow spherical YSZ powder for plasma spraying. According to the invention, preparation of the hollow spherical powder is realized by controlling dispersibility of the slurry for spray drying. The YSZ powder prepared by the above method has a hollow spherical structure with a full tetragonal phase, has excellent performance, has low cost and has remarkable popularization value.
Owner:XIAN AEROSPACE COMPOSITE MATERIALS INST
Preparation method of aluminum-coated spherical lithium nickel cobalt aluminum oxide cathode material for lithium-ion battery
InactiveCN105470482AImprove cycle performanceSolve uneven distributionCell electrodesSecondary cellsFiltrationCobalt
The invention discloses a preparation method of an aluminum-coated spherical lithium nickel cobalt aluminum oxide cathode material for a lithium-ion battery. The method comprises the following steps: firstly, dissolving an aluminum salt into water, and adding ammonia water to obtain sediments; dispersing the sediments, adding nitric acid to peptize the sediments, and ageing the product to obtain aluminum hydroxide gel; adding a nickel-cobalt mixed metal salt solution and the aluminum hydroxide gel, adding a complexing agent and a precipitant for reaction, and carrying out suction filtration, washing and drying to obtain inner spherical nickel cobalt aluminum hydroxide precursor powder; dispersing the precursor powder, carrying out precipitation with an aluminum salt solution and ammonia water and preparing an aluminum-coated spherical nickel cobalt aluminum precursor; mixing a lithium source and the aluminum-coated spherical nickel cobalt aluminum precursor evenly; and sintering the mixture, so as to obtain aluminum-coated spherical lithium nickel cobalt aluminum oxide powder. The nanoscale aluminum-coated lithium nickel cobalt aluminum oxide material with a constant crystal structure is prepared; and the lithium nickel cobalt aluminum oxide material with high tap density, high specific capacity and excellent cycle performance is obtained.
Owner:SHANDONG GOLDENCELL ELECTRONICS TECH
Multi-scale micro-nano particle composite soldering paste for field of electronic packaging and preparation method of multi-scale micro-nano particle composite soldering paste
ActiveCN109664049ASolve the disadvantages of poor oxidation resistance and difficulty in preservationSolve uneven distributionWelding/cutting media/materialsSoldering mediaMicro nanoActive agent
The invention provides the multi-scale micro-nano particle composite soldering paste for the field of electronic packaging and a preparation method and an application process of the multi-scale micro-nano particle composite soldering paste. The novel composite soldering paste is formed by mixing metal powder and a soldering flux, the metal powder is composed of 30 to 70 nm in particle size and 3 to 7 microns, 15 to 25 microns of Cu @ Ag particles, 40 to 60 nm of Ni @Ag particles and 1 to 2 microns of Ag particles, the scaling powder is composed of solvent isopropanol, an active agent stearicacid, a film-forming agent mixed rosin, polyethylene glycol, a modifier triethanolamine and a surfactant octylphenol polyoxyethylene ether, the existence of Cu @ Ag particles in the composite solder paste is reduced relative to the cost of the nano-silver solder paste, the electromigration resistance can be improved, the Ag particles can protect the integrity of the Cu @ Ag core-shell structure, under a high-frequency induction process condition, the magnetism of the Ni @ Ag particles ni enables the particle distribution to be more uniform, the density is improved, and the electric conductionheat conduction performance is improved. The method is low in cost, simple and controllable in process and high in efficiency, the problems that an existing device pasting material is high in cost, low in service temperature, long in process time and the like are solved.
Owner:哈尔滨景成创业投资管理有限公司
Aluminum matrix composite, and preparation method of aluminum matrix composite based on 3D (three dimensional) printing
ActiveCN108129168AImprove versatilityQuality improvementAdditive manufacturing apparatusCeramic shaping apparatusAir atmosphereAluminum matrix composites
The invention provides an aluminum matrix composite, and a preparation method of the aluminum matrix composite based on 3D (three dimensional) printing. The aluminum matrix composite is prepared by preparing a ceramic porous body blank via the 3D printing, performing solidification and sintering on the ceramic porous body blank, and performing pressure infiltration. The method comprises the stepsof forming the ceramic porous body blank for the aluminum matrix composite via a 3D printing technology, putting the ceramic porous body blank in a carbon dioxide atmosphere or an air atmosphere for solidification, performing integrated degreasing-sintering treatment in an air furnace to form a ceramic porous body for the aluminum matrix composite, and adopting a pressure infiltration method to prepare the aluminum matrix composite. The method can solve the problems of long technical flow, complicated procedure, high cost, limited product size and the like of the existing powder metallurgic method. At the same time, the method avoids the problems of high possibility of mixing of gas and impurities, and high possibility of segregation and 'caking' due to addition of ceramic particles in theexisting stirring casting method. The 3D printing technology can effectively shorten a research, development and production period of the ceramic porous body.
Owner:GUANGDONG INST OF NEW MATERIALS
Three-dimensional group unmanned aerial vehicle parallel type multi-target search cooperative operation method
ActiveCN111580564AImprove efficiencySolve uneven distributionArtificial lifeTarget-seeking controlSelf adaptiveMultiple target
The invention discloses a three-dimensional group unmanned aerial vehicle parallel type multi-target search cooperative operation method. The method comprises the following steps that a program is initialized; one-time self-organizing division is completed according to a multi-target distribution model of the response threshold; on the basis of a multi-target distribution model of sub-group scalehomogenization, resource allocation inside the sub-groups is carried out, and secondary distribution is completed; fine-grained target search is carried out by adopting an adaptive inertia weight extended particle swarm algorithm based on kinematics constraint characteristics; if the unmanned aerial vehicles in all the subgroups are close to the search target, the search is considered to be successful, otherwise, iteration is continued, and the positions and speeds of the unmanned aerial vehicles are continuously updated, a group unmanned aerial vehicle parallel search performance index evaluation model is established, and then convergence proving and analysis on the evaluation model is carried out. The method is advantaged in that parallel search efficiency of the group unmanned aerial vehicle is improved, problems that particles are prone to falling into local optimal points and search efficiency is too low are effectively solved, and system energy consumption and search time consumption are greatly reduced.
Owner:HUNAN UNIV OF SCI & TECH
Catalyst for preparing propylene by disproportionation of ethylene and butane and preparation method of catalyst
ActiveCN103272581AHigh selectivityHigh catalytic efficiencyHydrocarbon by metathesis reactionMetal/metal-oxides/metal-hydroxide catalystsRheniumSilicon dioxide
The invention discloses a catalyst for preparing propylene by disproportionation of ethylene and butane. The catalyst consists of 1-15% of active components and 85-99% of a carrier, wherein the active components comprise oxides of tungsten, molybdenum and rhenium; based on 100% of the total weight of the active components, the active components contain 80-100wt% of tungsten, 0-20wt% of molybdenum and 0-1wt% of rhenium; and the carrier is a zirconium oxide modified silicon dioxide carrier. The invention further discloses a preparation method of the catalyst. The preparation method comprises the following steps of: firstly, roasting a silicon dioxide carrier for 2-6 hours; then, dipping the roasted silicon dioxide carrier into a soluble zircon salt solution; subsequently, drying and roasting for 2-6 hours to obtain the zirconium oxide modified silicon dioxide carrier; then, dipping the zirconium oxide modified silicon dioxide carrier in a salt solution of tungsten, molybdenum and rhenium, and drying to obtain a carrier the surface of which is loaded by tungsten, molybdenum and rhenium; then, immobilizing the active components on the surface of the carrier through 0.1-6 M of an acidic precipitator, drying, and roasting for 2-6 hours so as to obtain the catalyst. The catalyst disclosed by the invention is high in catalytic efficiency and good in propylene selectivity.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Near-field direct-writing device based on composite receiving plate
ActiveCN106799831AHigh positioning accuracySolve uneven distributionManufacturing platforms/substrates3D object support structuresMovement controlElectric field
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Method for modifying and tackifying low-rank coals
The invention discloses a method for modifying and tackifying low-rank coals. The method comprises the following steps of: mixing low-rank coal materials, solvent water and a catalyst and putting the mixture in a high-pressure reactor; introducing a reducing gas mixture, adjusting the pressure of the high-pressure reactor, raising the temperature for reaction; and cooling the mixture to the room temperature after the reaction is completed and carrying out solid-liquid separation, wherein the solid product obtained by separation is modified tackified coal which can be used for coking. According to the method disclosed by the invention, the activity of the hydrogen generated by the reaction of water and CO is high, the coal modifying efficiency is high, the caking index G of the modified coals reaches 90 or higher, and so the low-rank coals can be used for coking after being modified. Moreover, the method is simple, the material source is wide, the coal modifying cost is low and the economic benefits are high.
Owner:TAIYUAN UNIV OF TECH
Method for preparing laser cladding coating by consolidating and pre-arranging blended carbon nano-tubes and metal nano-powder
InactiveCN105382251ASolve uneven distributionReduce wasteMetallic material coating processesSurface engineeringCarbon nanotube
The invention relates to a method for preparing a laser cladding coating by consolidating and pre-arranging blended carbon nano-tubes and metal nano-powder and belongs to the field of material surface engineering. The method includes the followings steps that the part surface is pretreated through cutting, electrosparking or sand blasting and the like; the carbon nano-tubes are dispersed in an ultrasonic manner in deionized water, and then one or more metal nano-powder is blended with the nano-tubes in an ultrasonic manner; a blended nano-powder water solution is stirred and evaporated at the constant temperature till the blended nano-powder is pasty, and then the pasty blended nano-powder is heated and dried to be made into blended powder; the blended powder is mechanically pressed to be consolidated and pre-arranged on the part surface to be scanned and heated through lasers under the nitrogen or argon and other protective atmospheres, metallurgical bonding of the part surface and the consolidating and pre-arranging layer is achieved, and the laser cladding coating is obtained. The method has the advantages that the carbon nano-tubes and the metal nano-powder are evenly blended; bonding of the self-adhesive blended powder and a part base body is enhanced due to the self-adhesive blended powder; and the cladding coating defect is lowered remarkably.
Owner:DALIAN UNIV OF TECH
Low-carbon alkane dehydrogenation olefin preparation catalyst and preparation method thereof
ActiveCN111375415AWell-developed pore structureSolve corrosiveHeterogenous catalyst chemical elementsHydrocarbonsAlkaneActivated carbon
The invention discloses a low-carbon alkane dehydrogenation olefin preparation catalyst and a preparation method of the catalyst. The catalyst comprises an active component, an auxiliary agent and a carrier, the active component is one or more of Fe, Co, Ni, V, Mo, Cr, Mn, Cu or Zn, the auxiliary agent is one or more of IA group, IIA group, rare earth elements, Al, Ti, Zr, Nb and Ga, and the carrier is silicon-based modified petroleum coke-based activated carbon. The preparation method comprises the following steps: (1) pretreating petroleum coke; (2) preparing silicon-based modified petroleumcoke; (3) preparing a composite oxide containing an active component and an auxiliary agent; (4) uniformly mixing the silicon-based modified petroleum coke, the composite oxide and an activating agent, and activating same; and washing and drying the sample obtained in the step (4) to obtain the catalyst. The prepared catalyst has the advantages of good active component dispersion, high utilization rate, high low-carbon olefin selectivity and the like.
Owner:CHINA PETROLEUM & CHEM CORP +1
Special material for manufacturing biodegradable antibacterial breathable membrane and preparation method thereof
The invention discloses a special material for manufacturing a biodegradable antibacterial breathable membrane and a preparation method thereof. The preparation method comprises the following steps of: adopting a jet mill to crush and grade 35-50 parts of heavy calcium carbonate, drying till the water content is less than or equal to 0.3%, adding 0.5-3 parts of surface active agent and 0.5-2 partsof activating agent, and fully reacting at a temperature of 110-130 DEG C; then adding 0.5 part of rare-earth antibacterial agent, 0-0.5 part of antioxidant and 0.5-3 parts of processing additive, mixing uniformly, then discharging, using the jet mill for milling and grading, finally adding 45-60 parts of biodegradable material and using a dual-screw extruder to extrude and granulate. The specialmaterial and the preparation method disclosed by the invention have the beneficial effects that the special material for the antibacterial breathable membrane is prepared by adopting methods of two-time surface modification and two-time jet milling and grading and utilizing the biodegradable material, the prepared breathable membrane product has the characteristics of good dispersity and uniformpore-diameter distribution and the like, can be completely biodegraded after being discarded, and has the advantages that the petroleum resources can be saved and the environmental pollution can be reduced and the like.
Owner:池州市锐强新材料有限公司 +1
A method and apparatus for processing metadata of an object in a distributed storage system
ActiveCN109299190AImprove uniformityAvoid problemsDatabase distribution/replicationSpecial data processing applicationsInodeDistributed computing
The invention relates to a method and a device for processing metadata of an object in a distributed storage system, which relates to the technical field of storage and can solve the problem of unevendistribution of metadata of the object. The bucket of the distributed storage system includes at least two logical sub-buckets, the at least two logical sub-buckets are mapped to different partitions, a first logical sub-bucket of the at least two logical sub-buckets is mapped to a first partition, and an index node of the distributed storage system manages the first partition. The method comprises the following steps: a service node of a distributed storage system receives an IO operation including a name of a bucket and a name of a first object; The service node selects a first logical sub-bucket from the bucket according to the name of the bucket and the name of the first object. According to the mapping relationship between the first logical sub-bucket and the first partition, the service node sends a processing request including the name of the first logical sub-bucket and the name of the first object to the index node, and the processing request is used for requesting the metadata of the first object to be processed in the first partition.
Owner:HUAWEI CLOUD COMPUTING TECH CO LTD
Injectable antibacterial bone cement
The invention relates to injectable antibacterial bone cement. The injectable antibacterial bone cement is composed of powder and liquid, the powder is prepared from, by mass, 70%-90% of calcium sulfate, 8%-29% of apatite and 1%-2% of sodium hypophosphite, the liquid adopts a silver nitrate aqueous solution with the concentration ranging from 10 mmol / L to 500 mmol / L, and the mass ratio of the powder to the liquid is 1.5-2.5 to 1. A soluble silver salt solution is adopted to serve as the liquid, the calcium sulfate, the apatite and the sodium hypophosphite serve as the powder, the sodium hypophosphite is utilized to serve as a reducing agent, after the powder and the liquid are mixed to be uniform, in-situ reduction is conducted on silver ions in silver nitrate, silver and silver oxide are formed and evenly dispersed in the bone cement, novel injectable antibacterial bone cement is prepared, and the problem that due to the fact that the silver or the silver oxide is directly added into the bone cement, the silver element distribution is uneven is solved. The compressive strength is 9.5 MPa or above, and the injectable antibacterial bone cement is a novel antibacterial bone repair material with excellent performance.
Owner:山东明德生物医学工程有限公司
User flow distribution method and device
ActiveCN110830234ASolve uneven distributionSolve the problem of relatively fixed distribution ratioEncryption apparatus with shift registers/memoriesData switching networksAlgorithmDistribution method
The invention discloses a user flow distribution method and device, is applied to the technical field of the Internet, and is used for solving the problems of non-uniform user flow distribution and fixed distribution proportion. The method specifically comprises the following steps of: obtaining hash seeds of each flow experiment; carrying out hash operation on the user identifier of the user flow; obtaining a hash value of each flow experiment corresponding to the user identifier; for various flow experiments, when it is determined that the hash value of the user identifier corresponding to the flow experiment hits the sub-flow interval corresponding to any control experiment in the flow experiment, distributing the user flow to any control experiment. Therefore, the hash operation is carried out on the user identifier of the user flow; the user flow is distributed according to the hash value, the user flow can be uniformly and randomly distributed, and the flow proportion of each control experiment can be flexibly configured, so that the problem of fixed distribution proportion is solved, the influence of non-uniform user flow distribution and fixed distribution proportion on anexperiment result is reduced, and the accuracy of the experiment result is improved.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Metal plating method for carbon nanotubes
InactiveCN101633500AIncrease the field enhancement factorSolve uneven distributionCarbon numberElectrolysis
The invention discloses a metal plating method for carbon nanotubes. Mainly, the method adopts low-carbon-number alcohol solvents and surfactants having a functional group of thioalcohol or sulfonic acid and uses ultrasonic vibration to fully disperse the carbon nanotubes in electroless plating surface to completely coat a plating layer on the surfaces of the carbon nanotubes, thereby solving the problem of uneven plating layer distribution caused by the aggregation of carbon nanotubes in the prior art.
Owner:FOXCONN (KUNSHAN) COMPUTER CONNECTOR CO LTD +1
Dual-scale dynamic homogenizing system for flow field
ActiveCN108543401ASolve uneven distributionReduce consumptionGas treatmentDispersed particle separationFlue gasEngineering
The invention, specific to the problem that a flue gas flow field in an absorption tower is nonuniform so that desulfurizing reaction efficiency is decreased, provides a dual-scale dynamic feedback homogenizing system for a flow field. The system comprises a horizontal dynamic rectification component, a longitudinal dynamic rectification component and a fixed diversion unit, wherein the horizontaldynamic rectification component and the longitudinal dynamic rectification component both comprise a flow field adjusting unit and a feedback control unit; the system is installed at an upstream flueof the inlet of the absorption tower, a longitudinal flow field adjusting unit is installed at an inlet segment, which is close to the adsorption tower, of a joining flue in front of the tower, a horizontal flow field adjusting unit is arranged at the upstream of the vertical flow field adjusting unit, and the fixed diversion unit is installed in a swerving flue in front of the tower; the flow field adjusting unit is provided with a blade group for adjusting a flow field, the feedback control unit is used for collecting flow field information at the downstream of the flow field adjusting unit, the angle of deflection of the blade group is adjusted according to feedback information, and the system can be used for realizing homogenizing adjustment of the flow field.
Owner:GUODIAN SCI & TECH RES INST +1
Magnetball distributing plate for fluidized bed
InactiveCN102631872ASimple and fast operationSolve uneven distributionChemical/physical processesFluidized bedEngineering
The invention provides a magnetball distributing plate for a fluidized bed, belonging to the technical field of a fluidized bed reactor. The device comprises a distributing plate which is formed by the means that magnetballs are regularly arranged on a support frame at the bottom of a reactor bed, the magnetballs are regularly and tightly arranged and are fully distributed on the support frame at the bottom of the reactor bed, and the magnetballs are distributed into monolayer or multilayer. The magnetic mutual attraction force between every two magnetballs is not less than 10N. Gas or liquid can be evenly and stably distributed after passing through the device, the magnetball distributing plate can be widely used in the technical fields such as gas-solid reaction, liquid-solid reaction, catalytic reaction and the like, and the problem that the gas can not be evenly distributed after passing through the distributing plate can be overcome. The regular magnetballs are taken as the distributing plate, so that the gas can be completely and evenly distributed after passing through the distributing plate, and the reaction time that the gas passes through a fluidized bed can be effectively controlled, therefore, the reaction efficiency can be improved, and the yield of the product can be improved.
Owner:BEIJING UNIV OF TECH
Cutting thread-free down jacket and manufacturing method thereof
InactiveCN106072882AAdjustable lengthFill adjustmentOvergarmentsClothes making applicancesPulp and paper industry
The invention relates to a cutting thread-free down jacket and a manufacturing method thereof. The method specifically comprises the following steps that 1, a double-layer downproof lining is selected, and double quilting threads are sewn on the double-layer in a cutting mode and cut through the double-layer downproof lining; 2, a double-sided glue strip is stuck to one side face of the double-layer downproof lining and arranged between the double quilting threads; 3, the double-sided glue strip is pressed to be bonded to the double-layer downproof lining; 4, the other face of the double-sided glue strip is attached to the inner side face of a down jacket fabric, and the attaching portion is pressed through a pressing machine; 5, the double-layer downproof lining is filled with down, and then the cutting thread-free down jacket is manufactured. Compared with the prior art, the manufacturing method has the advantages that the double quilting threads are firstly arranged on the double-layer downproof lining in the cutting mode, then the down jacket fabric is bonded, therefore, the problem that down escapes from needle holes generated when the quilting threads cut through the fabric is avoided, the downproof capacity and the warm keeping effect of the down jacket are effectively improved, the service life of the down jacket is effectively prolonged, the attractiveness of the down jacket is high, and the manufacturing method is suitable for manufacturing various down jacket fabrics.
Owner:上海三由户外用品有限公司
Separation and recycle system for water-containing organic waste liquid and organic solvents as well as recycle method
PendingCN109663376AAvoid accumulationEasy to separateLiquid distribution in distillationDistillationLiquid wasteRecovery method
The invention provides a separation and recycle system for water-containing organic waste liquid and organic solvents as well as a recycle method, wherein the separation and recycle system consists ofa distillation system and a pervaporation membrane separation system through process pipeline connection. A packed tower is adopted as a rectifying tower, and the material inlet of the packed tower is arranged in the center of a packed tower liquid distributor. A damping structure is arranged in the pervaporation membrane unit of the pervaporation membrane separation system. The separation and recycle system provided by the invention is suitable for online dehydration and recycle of multiple kinds of water-containing and two or more than two azeotropic or non-azeotropic organic solvents as well as for separation and reuse of the organic solvents.
Owner:CHENGDU GELAI HIGH TECH CO LTD
Aluminum alloy surface treatment method
ActiveCN110685002AEvenly distributedSolve uneven distributionAnodisationElectrolysisUltrasonic assisted
The invention discloses an aluminum alloy surface treatment method which comprises the steps of ultrasonic-assisted anodic oxidation, ultrasonic-assisted alternating current deposition and hole sealing treatment for an aluminum alloy sample. By adopting the method, an oxide film generated under the condition of maximum 30 DEG C has no pulverization or crack, metal nanoparticles in multiple pores of the anodic oxide film are uniformly distributed after alternating current deposition, and the problems that the quality and energy consumption of the oxide film are difficult to consider at the sametime and the metal nanoparticles are not uniformly distributed in the electrolytic coloring process are solved. Meanwhile, compared with the prior art, the method does not depend on the influence ofadditives on anodic oxidation and electrolytic coloring, is environmentally friendly, simple, convenient and energy-saving, and has a good application prospect. In addition, the process is convenient,the flow is simple, and controllability is high; common constant current and common industrial alternating current are used, popularization is facilitated, and good application prospect is achieved in aspects of building aluminum alloy profiles, electronic equipment housings, household appliances and the like.
Owner:FOSHAN UNIVERSITY
In-situ formation TiC reinforced high-chromium cast iron wear-resistant material and preparation method thereof
InactiveCN108286010AImprove wettabilityGood ceramic/metal bonding interfaceWear resistantSynthetic materials
The invention discloses an in-situ formation TiC reinforced high-chromium cast iron wear-resistant material and a preparation method thereof. Specifically, the preparation method comprises the steps that Ti3AlC2 and high-chromium cast iron powder are taken as raw materials, wherein the content of Ti3AlC2 is 5-30wt.%; an agate ball and ingredients are put into a ball milling tank according to the weight ratio of 2:1 for mixing for 5-10 hours; the mixed ingredients are put into a graphite mould, the graphite mould is placed in a high-temperature furnace, under an argon atmosphere, the temperature of the furnace is increased to 1200-1500 DEG C by taking the heating rate of 5-30 DEG C / minute, after the temperature is kept for 0-30 minutes, then the temperature is cooled to 1000-1300 DEG C, meanwhile, the pressure of 0-30 MPa is applied to the powder in the mould, the temperature is kept for 30-90 minutes, and finally the temperature is cooled to room temperature along with the furnace temperature, and the TiC reinforced high-chromium cast iron composite material is obtained. The TiC particles in the material prepared by the method are fine and uniformly distributed in a base body, thestructure of the high-chromium cast iron is refined, relatively high ceramic / metal bonding interface is formed between the TiC and the base body, and the comprehensive performance of the composite material is improved. The method has the advantages that the used equipment is simple, the time for compounding the material is short, and the method is suitable for large-scale production.
Owner:BEIJING JIAOTONG UNIV
Compound phase-change material target and preparation method thereof
ActiveCN101660119ASolve uneven distributionSolve the problem of uneven distribution of ingredientsElectrical apparatusVacuum evaporation coatingFilm materialInstability
The invention discloses a compound phase-change material target and a preparation method thereof. The compound phase-change material target is prepared by compounding a phase-change material and another material. While in preparation, firstly, the material with higher melting point is prepared into cylindrical shape and then is taken as a matrix; an etching process is utilized to prepare cylindrical pores with the same size and shape and even distribution on the matrix; then the material with lower melting point is filled into the pores; the two materials are combined together through a vacuumhot press sintering process, and finally, a mode of mechanical polishing is utilized to treat the surface, and therefore, a smooth, even and compact compound phase-change material target is obtained.Each component in the compound phase-change material target prepared by the method has even distribution, and the constituent can be modulated according to the size and the density of the pore, thereby solving the problem that each component of the compound material target is not evenly distributed; and the target adopted to prepare a film material is beneficial to evenly compounding two different materials, and therefore, the complexity and the instability of a multi-target cosputtering process are avoided.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Precise kiwi fruit juice constant-pressure dripping equipment
InactiveCN109650312ASolve uneven distributionSpray evenlyFilling without pressureSafety device in filling machineryActinidiaKiwi fruit
The invention relates to the technical field of kiwi fruit, and discloses precise kiwi fruit juice constant-pressure dripping equipment. The precise kiwi fruit juice constant-pressure dripping equipment comprises a box body I and a constant-pressure dripping mechanism; the constant-pressure dripping mechanism comprises a motor, a fixing block, a moving rod, a screw rod, a connection rod, a pressing plate, a sealing sleeve, a material inlet shield, a material inlet pipe, a material outlet pipe I, a box body II and a material outlet pipe III; and the motor is arranged on the top of the box bodyI. according to the precise kiwi fruit juice constant-pressure dripping equipment, through arrangement of the motor, the screw rod, the fixing block, the moving rod, the connection rod, the pressing plate and the sealing sleeve, the motor starts to drive the screw rod to rotate; the screw rod rotates to drive the connection rod to lift so as to drive the pressing plate to lift; the pressing platepresses liquid in the box body I; the pressing plate descends at constant speed, so that liquid which is sprinkled through a dripping head is uniformly outlet; the aim that kiwi fruit juice can be uniformly sprinkled from the bottom of the dripping head; and the problem in the prior art that during canning of the kiwi fruit juice, the flowing speed is unstable, so that the distribution of the kiwifruit juice in the bottom of a can is not uniform is solved.
Owner:NANJING LVHANG ECOLOGICAL AGRI
Target detection method based on improved Mixed Pooling-YOLOV3
PendingCN111353544AReduce the loss of feature space informationMitigate Vanishing GradientsCharacter and pattern recognitionNeural architecturesDarknetAlgorithm
The invention discloses a target detection method based on improved Mixed Pooling-YOLOV3, and the method carries out the design of a target detection algorithm based on the idea of regression, and achieves the multi-scale and multi-label classification. Based on the defects of a current one-stage target detection method YOLOV3, a DPM network based on a Darknet-53 structure is designed as a featureextractor; and secondly, an original loss function is reconstructed, and meanwhile, parameters of the original loss function are optimized, so the detection precision is effectively improved, and convergence is quicker. The DMP framework gives consideration to the complexity of the network and the accuracy of detection; compared with a common target detection feature extraction network VGG-16, the method has the advantages that the model calculation amount is reduced, the latest progress of computer vision is introduced into the field of target detection, the detection precision and the detection speed are good, and meanwhile, the method has better performance and popularization and application prospects.
Owner:TIANJIN CHENGJIAN UNIV
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