35results about How to "Meet industrial mass production" patented technology

Belonging to the technologies of pesticide preparation, the invention relates to a method for extracting a pesticide from juglans mandshurica fruit green peels and leaves. The method comprises: washing, air drying and crushing juglans mandshurica fruit green peels and leaves, sieving the crushed material through a sieve of 20 meshes, adding water into the sieved juglans mandshurica fruit green peel and leaf powder for immersion extraction or decoction extraction, then conducting solid-liquid separation, thus obtaining a juglans mandshurica fruit green peel and leaf pesticide. The method provided in the invention has the characteristics of simple extraction process, low production cost, high extraction efficiency, as well as good quality of the pesticide product, and can meet the use of industrial batch production.

The invention relates to the technical field of sodium ion battery materials, and in particular to a preparation method of a sodium vanadium phosphate sodium ion battery composite material. The preparation method provided by the invention comprises the following steps of 1: mixing, ball milling and drying a sodium source, a vanadium source and a phosphorus source to obtain sodium vanadium phosphate precursor powders; 2: pre-sintering and sintering the sodium vanadium phosphate precursor powders is a non-oxidizing atmosphere to obtain sodium ion battery cathode material sodium vanadium phosphate; 3: dissolving a organic carbon source in a dispersant, adding the sodium vanadium phosphate and stirring the mixture in a water bath, evaporating the mixture until a gel is formed, and drying and milling the gel to obtain mixed powders; and 4, mixing and grinding a compound containing the Y element and the mixed powders obtained in the step 3, sintering the mixture at 300 to 500 degrees centigrade for 0.5 to 3 hours to obtain the sodium vanadium phosphate sodium ion battery composite material. The method can solve the technical problem that the existing sodium vanadium phosphate has low electronic conductivity and thus seriously limits its rate performance and cycle performance.

The invention discloses an aspergillus niger which is classified and named aspergillus niger M1 with the preservation number being CCTCC NO: M2014421. The preservation date is September 23nd, 2014, and the preservation department is China Center for Type Culture Collection. Alpha-glucosidase produced by the aspergillus niger M1 strain is endoenzyme, and the aspergillus niger M1 strain can produce isomaltose hypgather containing more than 65% of active trisaccharide (IG+P+IG3) under the condition of high temperature. The required reaction time of preparing IMO-500 type isomaltose hypgather containing 35% of active trisaccharide is only half of the reaction time of preparing the isomaltose hypgather containing more than 65% of active trisaccharide. The alpha-glucosidase produced by the strain has advantages of excellent temperature characteristic, short glucoside conversion time, high content of the active trisaccharide in the product and the like.

The invention relates to the field of drying of solid materials or products without heating, and particularly relates to an air dryer used for drying a photovoltaic cell piece screen plate. In the current process of manufacturing the screen plate by solar cell manufacturing enterprises, the screen plate is commonly dried by a manual manner and the manual drying of the screen plate has the problems that the drying time is long, the efficiency is low, the drying effect is not ideal, the drying quality is not easy to control and the like, so that the requirements of industrial large-batch production cannot be met. The invention discloses an automatic screen plate air dryer; clean compressed air with adjustable temperature, humidity and air speed can be used for drying the screen plate; the drying efficiency is high and the drying effect is hood; in a drying process, the screen plate and a printing pattern thereof are not damaged and the requirements of the industrial large-batch production are met. The air dryer is simple and compact in design, easy to implement and lower in energy consumption cost; the air dryer is suitable for large-batch drying treatment on a plurality of solid parts and has a wide application and popularization prospect.

The invention relates to an airlift air stirring multi-sublayer circulating extraction device and an airlift air stirring multi-sublayer circulating extraction method. The device comprises an outer pipe, an outer center pipe and an inner center pipe; and an inner pipe is arranged between the outer pipe and the outer center pipe. The method comprises the following steps: firstly, mixed solution to be extracted is added into the extraction device and then a light phase is added; after the filling of the air is started, air bubbles are generated in the inner center pipe, the small circulation of sucking down the light phase is carried out between the two center pipes and simultaneously the light phase is crushed; then the solution in the inner and the outer pipes starts to participate in circulation and the light phase is further crushed; and after a certain time, light phase drops are totally mixed with a mixed solution phase to form the stable multi-sublayer circulation. The airlift air stirring multi-sublayer circulating extraction device and the airlift air stirring multi-sublayer circulating extraction method are particularly suitable for the process of uniformly dispersing the light phase into a heavy phase in an intervallic phase ratio system which has an oil-water phase ratio of less than 1:1,000 and is easy to emulsify; the operation can be continuously carried out under the condition that the two-phase interface is clear; the emulsification phenomenon is avoided; the airlift air stirring multi-sublayer circulating extraction device and the airlift air stirring multi-sublayer circulating extraction method have low equipment investment, are easy to operate, have low power consumption and small shear force for the solution and are beneficial to keeping the activity of biomacromolecules.

The invention discloses a dendritic tryptophan compound, a preparation method of the dendritic tryptophan compound and application of the dendritic tryptophan compound serving as a virus invasion inhibitor, and belongs to the technical field of dendritic polymer synthesis. According to the technical scheme, the preparation method comprises the following steps: adding a carboxyl-terminated polyamide-amine dendritic compound and alkyl esterified tryptophan into a hydrochloric acid and N, N-dimethylformamide solution, and reacting at 20-60 DEG C for 3-10 days to obtain a compound containing tryptophan groups at the tail end; and carrying out rotary evaporation drying, washing and drying on the compound containing the tryptophan group at the tail end, and carrying out high performance liquid chromatography purification on an obtained residue to obtain a preliminarily purified compound containing the tryptophan group at the tail end. The compound is applied to the aspect of virus invasion inhibitors, can solve the problems of the existing virus invasion inhibitors, and has the characteristics of simple preparation method, good antiviral effect and wide antiviral property.

The invention discloses a preparation method of a magnesium-based composite material applied to an automobile differential support, and relates to a preparation method of a composite material appliedto the automobile differential support. The method aims at solving the technical problem that an existing AZ91D magnesium alloy is not strong enough to replace an aluminum alloy for an automobile differential support. Through spinning spraying and bidirectional stirring, high-entropy alloy particles are added into an AZ91D magnesium alloy melt, the stirring time can be shortened, and the aggregation effect of broken particles is remarkable; X-direction and Y-direction mechanical vibration is conducted simultaneously, aggregation of the particles in a broken side wall area is facilitated, and thus the particles in the side wall area are stirred to the middle of the melt along with shearing to be sufficiently mixed with the melt; and a screen net is placed on the surface of molten metal in amaterial barrel to filter oxidized slag inclusions, and finally an extrusion casting process is conducted to prepare a product. The high-entropy alloy particles are uniformly dispersed, the strengthand hardness of the product are also greatly improved, the interior of the product is free of defects of oxidized slag inclusions, the particles are combined with a base body well, and the applicationsituation of the magnesium-based composite material can be further broadened.

The invention relates to a preparation method for a magnesium-based composite material, in particular to a preparation method for lost foam casting of a high-entropy alloy particle-reinforced magnesium-based composite material. The method aims to solve the technical problem that in the preparation process of an existing magnesium-based composite material, the addition proportion of magnesium alloywaste is small, and the strength is poor when a large amount of magnesium alloy waste is added. By adopting a lost foam casting method, utilizing two-way shear stirring, adding high-entropy alloy particles and performing ultrasonic treatment in the casting process, structure heredity is effectively improved, uneven dispersion of the particles at different positions of a magnesium alloy melt is avoided, structure coarsening is reduced, grain growth in the solidification process is inhibited, grains are refined, the utilization rate of magnesium alloy waste is increased, and the performance ofthe lost foam casting product is improved. In the method, the utilization rate of AZ91D waste is high, the maximum waste addition amount accounts for 34% of the total mass, raw materials are saved, and costs are reduced. The method is also suitable for continuous production operation and is an environment-friendly method.

The invention discloses an automatic circular arc saw gear grinding machine. The automatic circular arc saw gear grinding machine comprises a base, a material temporary storage mechanism, a material moving mechanism and a gear grinding mechanism. The base is provided with an arc-shaped track and a mounting base. The arc-shaped track is slidably provided with a working table. The working table is provided with a positioning device for positioning a workpiece. The arc-shaped track is further provided with a first arc-shaped rack. The mounting base is provided with a first driving motor. The material temporary storage mechanism comprises a first machine base and a sucker device for moving the workpiece from a first station to a second station. The material moving mechanism comprises a first manipulator. The first manipulator comprises a first driver, a first mounting plate and a first clamping device. After grasping the workpiece through the first clamping device, the material moving mechanism reciprocates between the second station and the positioning device. The gear grinding mechanism comprises a third machine base, a gear grinding machine head and a gear grinding wheel. The automatic circular arc saw gear grinding machine realizes the automatic processing of a circular arc saw, meets needs of industrial mass production, and has the advantages of high intelligence degree, production efficiency and precision, safety and reliability.