171results about How to "Completely destroyed" patented technology

The invention discloses wallpaper water-based paint. The wallpaper water-based pain is water-based acrylate emulsion with solid content being 20-40% and the water-based acrylate emulsion is mainly made from a (methyl) acrylate monomer, a functional polymerizable monomer, an emulsifier, a photocatalyst, an initiator and deionized water through an emulsion polymerization method and a sol-gel method. Accordingly, the invention also discloses a method for preparing the wallpaper water-based paint and wallpaper made by adopting the wallpaper water-based paint. The wallpaper water-based paint is obviously improved in wallpaper substrate adaptability, the wallpaper water-based paint has good adhesive force, isolation, wettability and colour developing capability and is resistant to scrubbing and high temperature, defoaming is realized and the hole shrinkage phenomenon of a substrate is avoided; meanwhile, the wallpaper water-based paint also has light degradation property and can purify indoor air.

The invention belongs to the food processing field, and particularly relates to a microwave treatment method before oil crop seeds are cold-pressed to produce oil. A method for pre-treating oil crop seeds by using microwave is characterized by comprising the following steps of: (1) adjusting the mass water content of the oil crop seeds to between 7 and 30 percent, and stirring the oil crop seeds uniformly; (2) uniformly spreading the oil crop seeds after the water content adjustment in a container, adjusting microwave power and microwave time, and performing microwave treatment on the oil crop seeds to obtain a final temperature of between 80 and 150 DEG C; and (3) spreading and cooling the oil crop seeds after the microwave treatment, and then performing cold pressing or peeling and cold pressing to produce oil. The method for treating the oil crop seeds is favorable for increasing the yield of cold-pressed oil and improving the quality of the cold-pressed oil.

The invention discloses a technology for the steam explosion treatment of a yellow wood fruit and the comprehensive utilization of grease and flavone thereof, and the like. In the method, the yellow wood fruit is firstly arranged in a steam explosion reactor and is pumped with saturated steam for treatment for 3 to 10 minutes under the pressure condition of 1.4MPa to 2.0MPa; then the mixture is quickly discharged from the reactor for explosion; a blank obtained through the steam explosion is naturally dried or arranged in a drying box for drying; an organic solvent is added for reflux extraction; a rotary evaporator is used for decompressing and evaporation; the solvent is recycled, thus obtaining the oil of the yellow wood fruit. An ethanol liquid is added into the oil meal and then a flavone liquid is obtained through reflux extraction. The remainder after extracting the grease and the flavone are manufactured into active carbon through thermal treatment, thus realizing the comprehensive utilization of the yellow wood fruit.

The invention discloses a method for removing cotton rapeseed meal toxicant by fermentation method and enhancing nutrient value thereof, a feeding fermented cotton rapeseed meal protein feedstock and applications thereof. The method comprises the steps that: cottonseed meal and rapeseed meal are mixed, the mixture is first added with feedstock water and complex enzyme preparation, and then inoculated with microorganism strain capable of producing protease bacteria or / and lactic acid bacteria as well as decomposing glucosinolate or / and gossypol, then fermentation is performed to obtain treated cotton rapeseed meal so as to obtain nontoxic, highly-nutrient feeding fermented cotton rapeseed meal protein feedstock, and the feeding fermented cotton rapeseed meal protein feedstock is used as protein feedstock component to form cotton rapeseed meal animal feed according to 15% of the addition proportion. Using modern biological technology, the method solves the problems of low utilization rate of cotton rapeseed meal, small amount of addition in the feed, the presence of toxicant and the like, and eases the strain on feed protein in our country.

The invention discloses a process for preparing wet puffed and granulated material for soft-shelled turtle comprising the following steps: proportioning materials by the ratio of white fish flour 40-60%, red fish flour 1-15%, soybean waste or puffed soybean 2-16%, yeasts 3-8%, flour 18-22%, glutelin powder or other binding agent 0.2-2.0%, microelement additive 0.5-2%, charging the materials into a catch trough, loading into mixing machine and disintegrating, charging vitamin additive 0.5-1.5%, mixing homogeneously, granulating at 80-130 deg C, spraying micro-ecological preparation 0.3-1.0% and grease 1.5-3.5% onto the surface.

The invention relates to demagnetizing and crushing integrated equipment and particularly relates to demagnetizing and crushing integrated equipment of electronic information storage equipment. The technical problem to be solved by the invention is to provide the demagnetizing and crushing integrated equipment of the electronic information storage equipment, by which information can be thoroughly destroyed. In order to solve the technical problem, the invention provides such demagnetizing and crushing integrated equipment of the electronic information storage equipment; the demagnetizing and crushing integrated equipment comprises a rack, a demagnetizing box, a demagnetizing coil, a motor, a cam, a first roller, a lifting rod, a first baffle, a first spring, a stirring rod, a guide plate, crushing boxes and the like; the rack is provided with the demagnetizing box and the two crushing boxes; the crushing boxes are located at the left and right sides of the bottom of the demagnetizing box; and a through hole is formed in the top of the demagnetizing box. By using the demagnetizing and crushing integrated equipment, the sufficient demagnetization and crushing of electronic information equipment are realized; and the lifting rod is provided with a circular collecting plate for collecting electronic information equipment with small size in order to prevent the equipment from falling onto the cam and the motor.

The invention relates to a method for preparing chitin and chitosan by coupling shrimp and crab shells through a hydrothermal / two-step enzymic method. The method comprises the following steps: removing impurities from shrimp and crab shells, and crushing the shrimp and crab shells; adding organic acid for decalcification treatment, placing filter residues into a hydrothermal reactor, and feeding a reaction medium for hydrothermal reaction; then rapidly relieving the pressure in the reactor, collecting a hydro-thermal treatment product, carrying out solid-liquid separation, and adding protease into a solid material to carry out enzymolysis deproteinization treatment; separating the deproteinized product to obtain solid residues, drying the solid residues to obtain chitin, and adding chitin deacetylase into the chitin for enzyme treatment to prepare chitosan; and finally, treating the organic acid decalcification solution and the protein enzymatic hydrolysate to obtain organic calcium and protein peptide. According to the method, the decalcified shrimp and crab shells are modified through a hydrothermal method, the compact structure of the shrimp and crab shells is broken, the accessibility of subsequent protease and deacetylase is promoted, the enzymolysis efficiency is improved, poly-generation of organic acid calcium, protein peptide, chitin and chitosan is achieved, the production process is rapid, stable and free of pollution, and large-scale industrial application is easy to achieve.

The invention relates to a multifunctional high-efficiency sewage treatment system with zero discharge, which comprises a sewage supply mechanism, a sewage treatment reactor, a treated water discharge mechanism and a sludge treatment mechanism, wherein the sewage supply mechanism comprises a sewage storage tank, a sewage delivery pump and a sewage dosing device; the sewage treatment reactor comprises a tank body, a treated water outlet and a sludge outlet; and the sludge treatment mechanism comprises a motor, a reducer, a rotating extruding shaft, an extruding filter screen, a solid outlet and a liquid outlet. The invention is suitable for the reaction for treating sewage with an activated sludge process and also for the reaction for treating the sewage with a physical and chemical method, and has the advantages of high treatment efficiency, thorough damage to toxic pollutants, good treated water quality and discharge up to the national standard; the solid and the liquid obtained after sludge treatment can be used as fertilizers for farmlands, thereby achieving zero discharge; and moreover, the system has the advantages of convenient operation and management and low application cost.

The invention provides a leaching method of a nickel cobalt lithium manganate waste battery positive-negative electrode mixed material, which comprises the following steps: adding a positive-negative electrode mixed material subjected to roasting pretreatment and separated from nickel cobalt lithium manganate waste batteries and vinasse into a pressure-resistant sulfuric-acid / nitric-acid-corrosion-resistant reaction kettle, adding a sulfuric acid-nitric acid mixed solution, and carrying out agitation leaching under sealed conditions.

The invention provides a veterinary syringe destroying device and relates to the technical field of veterinary syringe destroying devices. The veterinary syringe destroying device comprises a main box, a pre-disinfection mechanism, a blanking mechanism, a separation structure, a crushing mechanism and a collecting mechanism, a connecting block is connected in a sliding groove in a sliding way, a limiting plate is fixedly connected to the left side wall of a disinfection box, a reflecting plate is fixedly connected to a sliding block, and an ultraviolet germicidal lamp is also arranged on the left side of an inner cavity of the disinfection box. According to the veterinary syringe destroying device, the surface of a crushed syringe is preliminarily disinfected with the ultraviolet germicidal lamp in the disinfection box, and meanwhile, the effect of the ultraviolet germicidal lamp is improved with the reflecting plate, so that the syringe can be covered by ultraviolet rays, the ultraviolet rays do not affect the operators outside the device, and the safety performance is better; electromagnet on a turnover plate is utilized to separate an iron needle point part from other parts, sothat recycling is facilitated; and the parts screened by the electromagnet can be crushed, so that the destruction is more thorough.

The invention relates to a physical destruction system, including a destruction control circuit module and a current limiting protection circuit module. When the physical signal destruction is effective, a 28V high voltage large current destruction power supply is directly loaded to a storage medium NAND FLASH chip power supply base pin of a large capacity data storage module by control, and in the manner of reverse high voltage impact or positive large current heating, a storage wafer element of a NAND FLASH chip internal tube core can be completely destroyed. A current limiting protection circuit is designed in the physical destruction process to ensure the physical destruction process does not affect other circuits and only destroy storage FLASH effect. The physical destruction system can physically damage storage FLASH to achieve store data unrecoverability and ensure the complete elimination of important sensitive data in case of emergency.

The invention provides a leaching method of a nickel cobalt lithium manganate waste battery positive electrode material, which comprises the following steps: putting a positive-negative electrode mixed material subjected to roasting pretreatment separated from nickel cobalt lithium manganate waste batteries into a pressure-resistant sulfuric-acid-corrosion-resistant container, pumping sulfuric acid into the container, sealing the container, pumping a Na2SO3 solution into the container by using a filling pump, closing the Na2SO3 solution inlet valve, and leaching.

The invention provides a leaching method of a nickel cobalt lithium manganate waste battery positive-negative electrode mixed material, which comprises the following steps: adding a positive-negative electrode mixed material subjected to roasting pretreatment and separated from nickel cobalt lithium manganate waste batteries and pasture powder into a pressure-resistant sulfuric-acid / nitric-acid-corrosion-resistant reaction kettle, adding a sulfuric acid-nitric acid mixed solution, and carrying out agitation leaching under sealed conditions.

The invention provides an in-situ destruction device and an in-situ destruction method for an unexploded hand grenade. The device comprises a movable base, a combustible adhesive extrusion mechanism, an ignition mechanism and a video monitoring system which are arranged on the base, a display platform used for receiving the information of the video monitoring system, as well as a remote controller used for controlling the movable base, the combustible adhesive extrusion mechanism, the ignition mechanism and the video monitoring system. The in-situ destruction device and the in-situ destruction method, which are provided by the invention, are capable of safely, thoroughly and efficiently destructing the unexploded hand grenade in situ, without the need of additionally increasing an explosive with an explosion equivalent, and a safe distance of the unexploded hand grenade during destruction keeps the original safe distance; therefore, prevention measures have no need to be additionally increased in a hand grenade throwing field due to the destruction operation, the workload of the destruction for the unexploded hand grenade is reduced, and treatment working for the unexploded hand grenade in the hand grenade throwing field is greatly facilitated.

The invention discloses a method for leaching a positive-negative pole material mixture of a waste lithium nickel cobalt manganese oxide battery. The method comprises the steps of adding the positive-negative pole material mixture which is separated from the manganese waste lithium cobalt oxide battery and is subjected to roasting pretreatment, and napier grass powder into a reaction kettle which is resistant to pressure and the corrosion of sulfuric acid and nitric acid, adding a mixed solution of sulfuric acid and nitric acid, and leaching while stirring under closed conditions.

The invention discloses a method for removing polycyclic aromatic hydrocarbons in a water body by using an iron-manganese bimetallic oxide modified biological carbon photo-Fenton composite material, which comprises the following steps: mixing the composite material with the water body containing the polycyclic aromatic hydrocarbons, stirring, adding hydrogen peroxide solution, and carrying out photo-Fenton reaction to complete the removal of polycyclic aromatic hydrocarbons in the water body, wherein the composite material comprises biochar and the iron-manganese bimetallic oxide attached to the biochar; the iron-manganese bimetallic oxide is a mixture of iron oxide and manganese oxide, wherein the iron oxide comprises Fe3O4 and Fe2O3, and the manganese oxide comprises Mn3O4 and Mn2O3. Themethod has the advantages of simple process, simple and convenient operation, low cost, high removal efficiency, good removal effect, wide application range, good recycling performance, environmentalfriendliness and the like, and the method can be widely adopted and can efficiently remove polycyclic aromatic hydrocarbons in the water body, and has high application value and commercial value.

The invention provides a gas-lifting type two-phase partition membrane bioreactor and belongs to the technical field of industrial organic waste gas purification. The bioreactor comprises a shell, a gas inlet and an exhaust funnel; the bioreactor is characterized in that the gas inlet is formed in the center of the upper end of the shell, and the exhaust funnel is arranged at the upper end of the shell; the shell is internally provided with a tail gas area, a microorganism reaction area and an aqueous phase area in sequence from top to bottom, the exhaust funnel is communicated with the tail gas area, and a biological membrane is arranged between the microorganism reaction area and the tail gas area; the shell is further internally provided with a gas pipe, the gas pipe is arranged at the central axis of the shell and sequentially penetrates through the tail gas area, the biological membrane and the microorganism reaction area, the upper end of the gas pipe is communicated with the gas inlet, and the lower end of the gas pipe is located at the bottom of the aqueous phase area. The bioreactor combines characteristics of the two-phase partition biotechnology and characteristics of the membrane biotechnology, is compact, simple, novel in structure and high in innovation, has the advantages of being thorough in destruction, free of secondary pollution, comparatively simple in procedure and the like and is an ideal organic waste gas purification means.

The invention discloses a method for leaching a positive-negative pole material mixture of a waste lithium nickel cobalt manganese oxide battery. The method comprises the steps of adding the positive-negative pole material mixture which is separated from the waste lithium nickel cobalt manganese oxide battery and is subjected to roasting pretreatment, and high-concentration organic wastewater which does not contain benzene-ring substances into a reaction kettle which is resistant to pressure and the corrosion of sulfuric acid and nitric acid, adding a mixed solution of sulfuric acid and nitric acid, and leaching while stirring under closed conditions.

This invention provides a novel plasma apparatus, for the abating emissions of perfluoro compounds, which consists of a vortex plasma reactor, a venturi scrubber, a scrubber liquid sump, a packed tower scrubber, and a foam breaker. The said vortex plasma reactor has a plasma torch installed at the center of one end, and tangentially injected ports installed at the other end for the intake of flue gas containing perfluoro compounds and an amount of water for chemical reaction, to generate a highly turbulent vortex flow with high temperature gradient for enhancing the chemical reaction and destruction of the said perfluoro compounds. The flue gas from the said vortex plasma reactor is further treated by the said venturi scrubber for quenching and removal of acid gases and particulates, the said packed tower scrubber for the removal of acid gases, and the said foam breaker for the removal of entrained droplets and foams. The destruction and removal efficiency, of the said plasma apparatus for the abating emissions of PFCs, has demonstrated to reach 99.9%.

The invention belongs to the field of chemical analysis and particularly relates to a method for measuring tungsten content in steel. The method comprises the following steps: (a) mixing and heating the mixed acid of hydrochloric acid and nitric acid and a weighed steel sample, thereby dissolving the steel sample; (b) mixing with sulfur phosphor mixed acid and then heating till the sulfur phosphoric acid smoke appears in a mixed system, adding perchloric acid and then heating till pure perchloric acid smoke appears in the mixed system and separating the bottom of the appearing perchloric acidsmoke from the liquid level of the mixed system; (c) mixing with a dilute phosphoric acid solution, and then mixing with an ammonium ferrous sulfate solution, cooling to room temperature and then using a diluted phosphate solution for diluting and keeping constant volume, thereby acquiring to-be-developed mother liquor; and (d) taking some to-be-developed mother liquor, mixing with the thiocyanatesolution, stannous chloride solution, dilute sulfuric acid and a titanium trichloride solution, and then achieving the constant volume by using the stannous chloride solution, and developing to acquire the developing liquor; measuring the absorbency of the developing liquor; and calculating according to the measured absorbency value, thereby acquiring the tungsten content in the steel sample. Themeasuring method provided by the invention is high in accuracy, repeatability and reproducibility.

The invention relates to a multifunctional high-efficiency sewage-treating reactor comprising a tank body, a filter screen arranged at the upper part of the tank body, a stirring shaft, a sewage inlet, a treated water outlet and a sludge outlet, wherein the stirring shaft is in a hollow structure, and the upper end of the stirring shaft is provided with a compressed air inlet; a stirring paddle is in a hollow structure, and both ends of the stirring paddle are provided with a plurality of pores; the treated water outlet is connected to a treated water discharging port and is connected with a treated water returning pipeline through a treated water pump; and the sludge outlet is connected with a sludge return line and a sludge discharging port through a sludge pump. The multifunctional high-efficiency sewage-treating reactor is suitable for the reaction of the sewage treated in an activated sludge process and the reaction of the sewage treated in a physical and chemical process, and has the advantages of high treating efficiency, thorough damage to poisonous pollutants, good quality of treated water, convenient running and operation management and low application cost.

The invention discloses a preparation method of high-transparency purified konjac micro powder. The preparation method comprises the following specific steps: (1) removing surface-adhered impurities, starch, fiber and moisture from konjac fine powder by virtue of a hammer mill, and introducing the konjac fine powder into a raymond mill; (2) further removing the surface-adhered impurities, the starch and the fiber from the konjac fine powder by virtue of the raymond mill, and finely milling the konjac fine powder into a primary konjac fine powder product; (3) soaking the primary konjac fine powder product into alcohol for the first time, and carrying out centrifugal dewatering after the primary konjac fine powder product is adequately dissolved; and (4) soaking the primary konjac fine powder product obtained in the step (3) into the alcohol for the second time, and carrying out shrinking, the centrifugal dewatering and vacuum drying. The preparation method has the beneficial effects that by sequentially milling by virtue of the hammer mill and the raymond mill, the cellulose is thoroughly damaged, and the starch, the impurities, SO2 and the like are thoroughly removed, so that the transparency of the konjac micro powder is substantially increased and can reach above 90%.

The invention discloses a printed matter processing device, and particularly relates to a pulping device of a paper shredder. The pulping device of the paper shredder comprises a paper shredder shell and a cutter shaft which is used for shredding paper and is arranged on the upper part of the shell, and the pulping device of the paper shredder is characterized in that a pulping area is formed at the lower part of the shell and comprises a paper pulp storage box which is arranged below the cutter shaft and an electromotor which is installed beside the paper pulp storage box, the electromotor is horizontally arranged, the end part of an output shaft of the electromotor is directly connected with a stirring crushing paddle, the stirring crushing paddle is provided with bent stirring teeth, the rotary surface of the stirring crushing paddle contacts the paper pulp storage box, the output shaft of the electromotor is also provided with a belt pulley, the belt pulley is connected to the cutter shaft through a belt, and an openable pulp discharging hole is formed in the bottom of the paper pulp storage box. By adopting the pulping device of the paper shredder of the technical scheme, the floor area for the shredded paper is relatively small, and the information leakage can be avoided.

The invention discloses a burn-after-reading method based on complete offline, belonging to the field of data security. The method comprises the following steps that S1 a file sending party selects a to-be-sent file; S2 a reading password is provided through an appointed reader; S3 file data is encrypted through the appointed reader, and reading password checking information and decryption password information are written into a file header; S4 an encrypted burn-after-reading document is generated; S5 the encrypted burn-after-reading document, a file terminator and the appointed reader are packaged to generate an executable burn-after-reading file; and S6 the file sending party transmits the executable burn-after-reading file and the reading password to a file receiving party. In comparison with the existing burn-after-reading technology, the method is higher in safety and more human-friendly, and can be widely applied to the customers with higher requirement for file confidentiality, such as war industry, enterprises and institutions, and has good market prospect.

The invention discloses an automotive transmission synchronizer which comprises a gear sleeve, a gear hub and a synchronizing ring. An inner spline and an outer spline are installed together in a matching mode, the synchronizing ring is arranged on the axial end face of the gear hub, gear sleeve grooves are evenly distributed in the inner peripheral wall of the gear sleeve, and L-shaped gear hub grooves are symmetrically formed in the gear hub, in the positions corresponding to the gear sleeve grooves and in the axial end face of the gear hub. Compression steel ball assemblies are arranged in the gear sleeve grooves, and a steel ball butts against the gear hub through the effect of the spring. Ejecting blocks are arranged in the gear hub grooves respectively, the surfaces of one ends of the ejecting blocks face to one end of the gear sleeve and are inclined faces with higher outer sides and lower inner sides, the surfaces can be contacted with the steel ball to receive pressure from the steel ball, the other ends of the ejecting blocks are arc faces, butt against the groove walls of the gear hub grooves, are rotated along with variation of stress of the inclined face ends, the outer side faces of the ejecting blocks are contacted with the end face of the synchronizing ring, so that the synchronizing ring is pushed. The automotive transmission synchronizer can thoroughly break an oil film of a synchronous conical face to increase a friction coefficient of the synchronous conical face.

The invention relates to a microwave ablation antenna used for cystic tumor ablation therapy. The microwave ablation antenna comprises an insulation stabs head, a pole core, a coaxial cable, a water division pipe, a water plugging shaft, an inner pipe which sleeves the water division pipe and an outer pipe which sleeves the inner pipe, the front ends of the inner pipe and the outer pipe are arranged on a boss of the rear end of the insulation stabs head in a sleeved mode, a side hole is formed in the front portion of the outer pipe, a capillary tube is fixedly arranged between the inner pipe and the outer pipe, the head of the capillary tube extends near the side hole, the capillary tube is suitable for special injection and suction of a cystic tumor, a water inlet way is formed in the clearance between the water division pipe and the coaxial cable, a water outlet way is formed in the clearance between the water division pipe and the inner pipe, and cooling is effectively conducted on the antenna by using circulating cooling water.

The invention provides a black tea processing method. The black tea processing method comprises the following steps of firstly pretreating tea leaves, then performing withering, performing rolling, then performing fermentation, then performing a working procedure of hot blowing for quality improvement, and finally performing drying so as to obtain black tea, wherein in the working procedure of hot blowing for quality improvement, fermented tea blanks are uniformly heated by hot blowing for quality improvement equipment, and besides, peculiar smell is eliminated. According to the black tea processing method disclosed by the invention, a technology of hot blowing for quality improvement is newly added, so that the activity of enzymes is effectively restrained, besides, mixed peculiar smell of herbal flavor, wet stuffiness and the like in the tea blanks is eliminated, the tea blanks are uniformly dehydrated, and the problem that the quality of the black tea is influenced by water stifling taste and the like produced in the working procedure of drying is solved. After quick-freeze withering treatment, microwave treatment is performed, so that tea leaves are soft in leaves, the tenacity of the tea leaves is strengthened, and shaping is facilitated. In the rolling treatment process of the tea leaves, ultrasonic treatment is performed, so that the cytoclasis of the tea leaves is thorough, and later-stage fermentation treatment is facilitated. The fragrance fresh and brisk degree, the mellow degree, the brewing resistant degree and the tea soup brightness of black tea products made by the black tea processing method disclosed by the invention are obviously improved, and the green and astringency sense of the black tea products is reduced.

The present invention is one kind of thymosin composition injection and its preparation. It consists of thymosin and reductive glutathione in the weight ratio of 1-10 to 2-120 as well as pharmaceutically acceptable supplementary material. It has perfect dosage form, reasonable production process, high purity, high stability, high curative effect, and less allergic reaction and side effect.

The invention relates to the field of biotechnology, and discloses a method and a kit for leukocyte differential count. The kit comprises a reagent A and a reagent B, wherein each of the reagent A and the reagent B respectively comprises the components selected from proper dye, a buffer agent, a hemolytic agent, inorganic salt, acid salt and a stabilizer; after the reagent A and the reagent B are mixed with a blood sample, erythrocyte can be rapidly and thoroughly damaged, so that erythrocyte fragments can be effectively dissolved; meanwhile, a leukocyte membrane is punched, so that the dye can rapidly enter the leukocyte cytoplasm and can be combined with different particles in the leukocyte cytoplasm so as to take on different colors; furthermore, the leukocyte membrane is protected by other reagents in a synergetic manner, so that the integrity of the leukocyte can be maintained; therefore, an instrument has a good effect of distinguishing the different types of leukocyte, and is especially suitable for automatically sorting the leukocyte by a machine vision principle-based cell morphology analysis technology.

The invention discloses a method for continuously extracting active ingredients of cassia seed at high pressure, comprising the following steps: (1) breaking: the cassia seed is broken to particles with 30-80 meshes; (2) soaking: the cassia seed and ethanol are mixed according to the material-to-liquid ratio of 1:10-30 for soaking for 30-60 minutes; (3) high-pressure extraction: material liquid obtained in the step (2) is sent to a high-pressure extractor, the material liquid continuously passes an annular working gap of the high-pressure extractor under the action of 30-90Mpa high pressure, so as to collide on a collision ring in the high-pressure extractor at high speed, break cell walls of the cassia seed and lead the active ingredients to be dispersed in solvent; (4) solid-liquid separation: the material liquid after the high-pressure treatment is taken out, and the solid-liquid separation is carried out for obtaining extract liquid and material residue respectively. The process has simple and safe operation.