38results about How to "Guaranteed content" patented technology

The invention relates to the technical field of feeds, and particularly discloses a cattle fattening feed which is technically characterized by comprising the following components in percentage by weight: 20-60 parts of a fermented mixture, 10-16 parts of modified coconut fiber, 0.5-1.5 parts of an additive and 5-10 parts of an additive, the fermented material mixture is prepared from soybean meal, corn, rice bran, pennisetum purpureum, hops, an aspergillus oryzae culture, saccharomycetes, bacillus subtilis and bacillus amyloliquefaciens; the mass ratio of the soybean meal to the corn to the rice bran to the pennisetum purpureum to the hops is (2-4): (1-3): (3-5): (2-4): (0.4-0.9); the additive is fructus momordicae residues; the additive is a mixture of codonopsis pilosula and rhizoma atractylodis. The feed disclosed by the invention contains the siraitia grosvenorii residues, so that the apparent digestibility, the growth performance, the serum biochemical index and the antioxidant index of the fattening cattle can be improved, and the quality of the fattening cattle can be effectively improved.

The invention provides a solid-state battery with high safety, flame retardance and long cycle performance and a production method thereof, and the production method comprises the following steps: mixing 1, 3-dioxolame, an initiator, a flame retardant, a lithium salt and a solvent to form an electrolyte for later use; the method comprises the following steps: uniformly mixing various lithium compounds, a conductive agent and a binder to form slurry, coating the slurry on an aluminum foil with a protective film, drying to obtain a positive plate, and processing the positive plate and a negative plate through a lamination or winding process to prepare a battery core; a part of the electrolyte solution is injected into the battery core, the humidity is controlled within 20% RH, the pressure is controlled within 1-3 MPa, standing is carried out for 5-8 h at the specific temperature below 60 DEG C to form a first layer of gel, a second layer of electrolyte is added after standing is carried out for 5 h, and then high-temperature treatment, hot pressing and standing are carried out to obtain the solid-state battery. The solid-state battery provided by the invention has relatively high safety and long cycle stability.

The invention discloses a device and a process for continuously preparing alpha-phase silicon nitride by a precursor method, and relates to the technical field of preparation of alpha-phase silicon nitride. In the process provided by the invention, the raw material silicon tetrachloride directly reacts with liquid ammonia in the reactor in a vaporific form under the action of high-purity nitrogen through an atomizer, and meanwhile, the by-product ammonium chloride solid generated by the reaction can be ensured to be completely dissolved in the liquid ammonia through the reaction temperature and the reaction pressure and by limiting the feed flow ratio of the raw material silicon tetrachloride to the liquid ammonia; the content of ammonium chloride impurities in generated solid material precursor silicon imine is reduced, and the impurity decomposition amount during subsequent calcination is reduced while the product purity is improved.

The utility model provides a reverse osmosis concentrated water treatment system. The reverse osmosis concentrated water treatment system comprises a hardness and fluorine removal integrated device, a micro-nano ozone oxidation device and an activated carbon adsorption device, the input end of the hardness and fluorine removal integrated device is communicated with the concentrated water output end of the reverse osmosis membrane, the output end of the hardness and fluorine removal integrated device is communicated with the input end of the micro-nano ozone oxidation device, and the hardness and fluorine removal integrated device is used for carrying out hardness and fluorine removal treatment on reverse osmosis concentrated water through conventional flocculent precipitation and conveying the reverse osmosis concentrated water to the micro-nano ozone oxidation device; the output end of the micro-nano ozone oxidation device is communicated with the input end of the activated carbon adsorption device, and the micro-nano ozone oxidation device is used for carrying out COD (Chemical Oxygen Demand) removal operation on the reverse osmosis concentrated water subjected to hardness removal and fluorine removal and conveying the reverse osmosis concentrated water to the activated carbon adsorption device; the output end of the activated carbon adsorption device is communicated with the drain tank and is used for adsorbing the reverse osmosis concentrated water through activated carbon and conveying the reverse osmosis concentrated water to the drain tank. According to the reverse osmosis concentrated water treatment system provided by the invention, efficient and stable fluorine removal can be realized, and the use amount of ozone is reduced while the COD removal effect is ensured.

The present invention discloses a method for preparing Lactobacillus casei and a preparation thereof. The Lactobacillus casei was deposited in the China General Microbiological Culture Collection Center on July 6, 2022, with a deposit number of CGMCC No. 25194. The preparation method of the double-layer emulsion probiotic preparation comprises the following steps: (1) vortexing Lactobacillus casei and a probiotic protective agent solution to uniformly disperse them to form an inner water phase W1; (2) dissolving ursolic acid in oil to form an oil phase O, and mixing the oil phase O with the inner water phase W1 by high-speed shearing to obtain an oil-in-water type colostrum W1 / O; (3) using a suspension of colloidal particles as an external water phase W2, adding the external water phase W2 to the colostrum W1 / O, and mixing by medium-speed shearing to obtain a double-layer emulsion probiotic preparation with a W1 / O / W2 type double emulsion structure.

The invention relates to the field of food processing, and discloses a flavor oil processing technology for improving phenolic nutrient substances, which comprises the following steps: (1) mixing oil seeds with water, and carrying out low-temperature treatment at 20 DEG C or below to obtain wetted oil seeds; (2) stir-frying and squeezing the wetted oil seeds to obtain first crude oil and an oil cake; (3) mixing the oil cake with water, performing heat treatment, and performing oil extraction to obtain second crude oil; and (4) mixing the first crude oil and the second crude oil to obtain the vegetable oil. By adopting the method disclosed by the invention, the content of polyphenol, sterol and flavor substances in the vegetable oil can be further improved.

The invention discloses ultrahigh-plasticity hot-rolled austenitic stainless steel and a preparation method thereof, and belongs to the technical field of austenitic stainless steel production and manufacturing. The preparation method comprises the following steps: smelting and pouring according to a certain mass percent of chemical components to obtain a steel billet, homogenizing the steel billet, and forging the steel billet into a square billet; performing multi-pass hot rolling on the square billet to obtain a hot-rolled plate, performing interrupted solution treatment on the hot-rolled plate, and performing water cooling to room temperature; by controlling element selection of C, Cr, Mn, Ni and N and cooperating with a multi-pass hot rolling-solid solution interruption preparation method, an austenite structure after complete recrystallization is regulated and controlled firstly, then part of austenite is recrystallized again through low-temperature solid solution, and high mechanical stability and excellent strong plasticity are obtained based on two recrystallization behaviors.

The invention discloses an agricultural irrigation water circulation system, and relates to the technical field of water treatment.The agricultural irrigation water circulation system comprises a water pumping device, a first-layer filtering device, a dirt scraping device, a purifying device and a water collecting tank, the water pumping device pumps sewage into the first-layer filtering device, and the first-layer filtering device is composed of four sets of filtering plates and a water passing pipe; the four groups of filter plates are respectively mounted in four different directions of the water pipe, a partition plate is mounted between every two groups of filter plates, impurities in sewage are filtered out by the filter plates, the dirt scraping device scrapes the impurities on the filter plates, the water pipe is connected with the upper and lower filter plates to flush out the impurities in the filter holes, and the sewage enters the purification device from the lower filter plate. The purification device is composed of two layers of ultraviolet lamp panels, sewage is purified through ultraviolet rays, the purified water flows into the water collecting tank, the work of replacing a filter plate is omitted, harmful substances in water are purified through the ultraviolet rays, and the harmful substances in water are prevented from harming crops when farmland is recharged.

The invention belongs to the technical field of pharmaceutical preparations, and particularly relates to a preparation method of angelica sinensis blood replenishing granules. Comprising the following steps: (1) adding water into wine radix angelicae sinensis to moisten the wine radix angelicae sinensis, extracting volatile oil by adopting a steam straight-through method, and collecting the volatile oil and medicine residues; (2) clathrating the volatile oil, beta-cyclodextrin and water, drying and crushing to obtain a volatile oil clathrate compound; (3) mixing the medicine residues with astragalus membranaceus, adding water, performing reflux extraction to obtain an extracting solution, and performing vacuum concentration to obtain a concentrated solution; (4) adding maltodextrin into the concentrated solution, uniformly mixing, sieving, and carrying out spray drying to obtain extract powder; and (5) adding auxiliary materials and a volatile oil clathrate compound into the extract powder, uniformly mixing, and performing dry granulation to obtain the angelica sinensis blood replenishing granules. By optimizing the preparation process, the ferulic acid component in wine angelica sinensis is greatly reserved, the high content of volatile oil is ensured, and the prepared angelica sinensis blood replenishing granules are similar to a reference sample.

The invention belongs to the technical field of fruit and vegetable juice processing, and provides a preparation technology of concentrated clear asparagus juice. According to the process, high retention rate and efficient clarification of functional components of asparagus are realized through the steps of gradient heat treatment, composite enzymolysis, two-stage centrifugal separation, enzyme deactivation-ultrafiltration coupling, low-temperature concentration and the like. Particularly, a complex enzyme preparation in a specific ratio is combined with a 50kDa ultrafiltration membrane, so that the membrane pollution index is reduced by 60% while the clarification effect is ensured. The rutin retention rate of the concentrated clear asparagus juice produced by the process reaches 82.7%, and the turbidity is 1t; the method has remarkable technical advantages and economic benefits.

This invention discloses a 6-series energy-absorbing aluminum alloy and its manufacturing method. The aluminum alloy, by mass percentage, comprises: Mg: 0.50–1.20%, Si: 0.40–1.00%, Mn: 0.15–0.95%, Cr: 0–0.25%, Fe: 0.15–0.45%, Ti: 0.015–0.30%, and Cu: 0.10–0.70%; wherein the Mg / Si mass ratio is ≥0.85 / 1, and the total content of Mn+Cr+Fe is ≤1.2%; it also includes an AlTi5C0.25 grain refiner and impurities with a content not exceeding 0.15%, with the balance being Al. This invention optimizes and precisely designs the content of the main alloying elements in the alloy, and introduces TiC nanoparticles using the AlTi5C0.25 grain refiner, enabling the aluminum alloy profile to possess both high strength and excellent crushability.

The present invention belongs to the technical field of polyacrylamide preparation, and specifically relates to a method for preparing polyacrylamide for oil displacement. The method for preparing polyacrylamide for oil displacement of the present invention uses acrylamide as the main monomer, N-(1,1-dimethyl-3-oxobutyl) acrylamide, 6-acryloylethylenediamine-β-cyclodextrin and N-dodecyl acrylamide as functional monomers, and adopts a two-polymerization process to prepare polyacrylamide for oil displacement, and in the second polymerization, polymethyl vinyl ether and polyacryloyloxyethyl trimethyl ammonium chloride are creatively added to improve the dispersibility and stability of the system. The polyacrylamide for oil displacement prepared by the preparation method of the present invention has excellent salt resistance and the ability to inhibit hydrolysis, and when used for oil displacement, it also has excellent injection ability, viscosity increase and stability.

The invention discloses aerated tea making water, a preparation method and production equipment, and belongs to the technical field of drinking water production.The aerated tea making water is prepared from natural mineral water as a raw material through a pretreatment stage so as to control the total hardness of water, reduce the content of calcium and magnesium ions, basically keep the content of sodium ions, potassium ions and magnesium ions and keep the content of metasilicic acid in the water at the same time; a fixed amount of carbon dioxide and hydrogen are sequentially filled after pretreatment, so that the pH value of water is reduced from weak alkalinity to weak acidity, when tea leaves are brewed with cold water, the pH value of tea soup can be in a relatively stable interval, protein can be kept invariant, the irritation of the tea soup to the oral cavity is increased, the taste is relatively fresh and refreshing, the aftertaste is sweet and smooth, and the taste quality of the tea soup is obviously changed; the mineral water rich in hydrogen is more beneficial to body health than purified water.

The invention discloses a method for preparing a fertilizer from amino acid in high-purity tryptophan fermentation waste liquid, and relates to the technical field of fertilizer preparation, and the method comprises the steps of pretreatment of the tryptophan fermentation waste liquid, amino acid enrichment, nutrition blending and post-treatment operation. The method has the advantages that the high-purity tryptophan fermentation waste liquid is used as a raw material to prepare the fertilizer, various nutritional ingredients in the waste liquid are fully utilized, wastes which originally possibly cause environmental pollution are converted into valuable resources, the problem of treatment of the fermentation waste liquid is solved, environmental pollution is reduced, and the method is suitable for industrial production. Meanwhile, effective recycling of resources is achieved, cross-flow filtration is conducted on the tryptophan fermentation waste liquid through a specially-treated polymer film under the mild condition, macromolecular impurities can be effectively intercepted, amino acid is prevented from being damaged due to high temperature, high pressure or chemical action in the separation process, and the separation efficiency is improved. The composite ion exchange resin column is strictly transformed and flushed, and then is subjected to ion exchange at a proper temperature.

The utility model discloses a continuous processing device for waste circuit boards, which relates to the technical field of waste circuit boards and comprises a conveying frame, a conveying belt is arranged in the middle of the conveying frame, a first driving motor is detachably connected to the outer surface of one side of the conveying frame, and a detection frame is detachably connected to the outer surface of the upper end of the conveying frame. And a recycling box is arranged on the outer surface of the other side of the conveying frame. According to the continuous treatment device for the waste circuit boards, the arranged detection frame can perform metal detection on the conveyed waste circuit boards through the metal detector during use, the metal content of the waste circuit boards can be detected, then the vacuum suction cups can be driven by the electric push rods to adsorb the circuit boards with the low metal content, and therefore the circuit boards with the low metal content can be continuously treated. And a swing plate is driven by a third driving motor to sort the waste circuit boards, so that the metal recovery content of the waste circuit boards can be guaranteed, the workload of workers can be reduced, and the working continuity can be improved.

The invention discloses high-voltage pulse equipment for dioxin treatment, and relates to the field of dioxin treatment.The high-voltage pulse equipment comprises a high-voltage pulse purification box, a discharge electrode is arranged in the high-voltage pulse purification box, an organic solvent purification box is connected to the upper portion of the high-voltage pulse purification box, and an activated carbon adsorption box is connected to the upper portion of the organic solvent purification box; a high-temperature steam reduction box is installed on the outer side of the activated carbon adsorption box, and a cooling treatment box is connected to the upper portion of the activated carbon adsorption box. By arranging the high-voltage pulse purification box, the organic solvent purification box and the activated carbon adsorption box, a large amount of dioxin in waste incineration flue gas can be effectively removed through three times of treatment, and it is guaranteed that the dioxin content is within the national specified emission standard during flue gas emission; the high-temperature steam reduction box is arranged, and the activated carbon in the two adsorption cavities is driven by the rotating shaft to turn over and be alternately used, so that the trouble of regularly replacing the activated carbon is avoided, and the sufficient adsorption effect on the dioxin can be kept.

The invention relates to the technical field of glass fiber reinforced plastic product production, in particular to an automatic glass fiber reinforced plastic cable protection pipe machining device which comprises a rack, a forming film shell and a movable feeding device, the rack is further provided with an outer cover shell surrounding the outer portion of the forming film shell, and two attaching rollers are arranged in the outer cover shell; the axes of the attaching rollers are parallel to the forming film shell and are located at the upper end and the lower end of the forming film shell correspondingly, and the attaching rollers move in a centering mode to be attached to the surface of the forming film shell to press materials wound on the forming film shell; an inner cavity is formed in the outer cover shell, a feeding port communicated with the inner cavity is formed in the bottom of the inner wall of the outer cover shell, a discharging port communicated with the inner cavity is formed in the top of the inner wall of the outer cover shell, and a conveying belt is arranged in the inner cavity. The conveying belt conveys resin entering the inner cavity through the feeding port to the top, and the resin falls on the surface of the laminating roller above through the discharging port, so that the content of the resin in the glass fiber reinforced plastic cable protection pipe is guaranteed.

The application discloses a high-enthalpy flexible phase change material and a preparation method and application thereof, and relates to the technical field of high polymer composite materials.The preparation method comprises the following steps: taking maleic anhydride as a grafting agent, and polyolefin thermoplastic elastomer as a grafting object to prepare a grafting modified thermoplastic elastomer; adding a crosslinking agent and a phase change material into the grafting modified thermoplastic elastomer, and melt blending to obtain the high-enthalpy flexible phase change material.The preparation method has the following advantages: more excellent flexibility, the three-dimensional crosslinking network is constructed through the introduction of anhydride-ester dynamic bond, and the organic solid-liquid phase change material is reinforced and toughened; high energy storage density; the introduction of the crosslinking network enables the polymer support structure to better coat the phase change material, and the content of the phase change material is ensured, that is, the high energy storage density is provided.

The present invention relates to a floating beam green tea processing technology, which comprises the steps of tedding, fixation, spreading for cooling, rolling and parching, the fixation is divided into three steps: first steam fixation is performed, the temperatures of the front, middle and rear sections in a cylinder are different, ozone water washing is performed after the first fixation, the second fixation adopts microwave fixation, and nitrogen-containing substances are supplemented and sprayed before the fixation. And finally, the floating beam green tea which is mellow in tea fragrance, green in leaf bottom and light green and bright in soup color is obtained.

The present application relates to the field of pharmaceutical powders, and in particular to a cholecalciferol powder and a preparation method thereof. The raw materials of the cholecalciferol powder include, by mass percentage, 0.05-1% cholecalciferol, 0.1-2% flow aid, 40-60% coating material, 20-30% carrier particles, 1-5% functional additives, and solvent to supplement the remainder. The cholecalciferol powder prepared in the present application can not only ensure that the content and uniformity of cholecalciferol therein meet the standards, but also ensure that it has excellent antioxidant properties and water-resistant and hygroscopic properties, and has extremely strong self-stability in use, transportation and storage, and has a very excellent market prospect.

The application relates to the technical field of heat-conducting composite materials, and discloses a heat-conducting flexible composite phase change material as well as a preparation method and application thereof. The method comprises the following steps: modifying a thermoplastic elastomer by grafting maleic anhydride as a grafting agent; modifying a heat-conducting filler by surface hydroxylation with a strong base as a surface modifier; melt blending the grafted thermoplastic elastomer with a phase change material, and adding the surface-modified heat-conducting filler to crosslink, so as to obtain the heat-conducting flexible composite phase change material. By regulating and controlling the micro-interface structure of the filler-matrix, the interface interaction between the filler and the matrix is enhanced, the heat-conducting-support integrated structure is constructed, the interaction between the filler and the matrix is improved, the dispersion of the filler in the matrix is improved, the interface phonon scattering is reduced, the heat-conducting flexible composite phase change material has good heat-conducting performance, and meanwhile, the heat-conducting flexible composite phase change material also has strong mechanical performance and high energy storage density.

The invention discloses a biocompatible membrane for a biosensor and a glucose sensor. Wherein the biocompatible membrane is prepared by coating a membrane solution through a coating process; the membrane solution comprises a cofactor graft polymer, an organic solvent and a buffer solution; the end part of a branch chain of the cofactor graft polymer is grafted with a cofactor; the main chain of the cofactor graft polymer is one or more of polyurethane, polyvinyl alcohol, a polyvinyl alcohol derivative, polyvinylpyrrolidone, a polyvinylpyrrolidone derivative, polyvinylpyridine and a polyvinylpyridine derivative; the branched chain of the cofactor graft polymer is one or more of acetic acid, butyric acid, ethyl butyrate, hexanoic acid and ethyl hexanoate. The biocompatible membrane can realize accurate regulation and control of chemical substance permeation, widens the linear range of chemical substance detection of the biosensor, can provide cofactors required in the chemical substance detection process of the biosensor, and improves the stability and durability of the biosensor.

The invention provides a method for calculating the dosage of a lithium ion battery negative electrode conductive agent and application of the method in lithium ion battery production, and relates to the technical field of batteries. The invention provides a method for calculating the dosage of a conductive agent of a negative electrode of a lithium ion battery. The calculation formula is mCB negative = alpha * (s * h * mu / gamma), wherein mCB < negative > is the weight of the negative conductive agent; alpha is a negative electrode liquid retention conversion coefficient and ranges from 0.08 to 0.3; s is the dressing area of the negative electrode slurry; h is the dressing thickness of the negative electrode slurry; mu is the porosity of the negative electrode slurry layer; gamma is the oil absorption value of the negative conductive agent. According to the calculation method, the content of the conductive agent is calculated in advance, so that the formula of the slurry can be optimized, the content of the conductive agent can meet the requirement of liquid retention, the performance of the slurry cannot be reduced too much, the performance and reliability of the battery are improved, meanwhile, the experiment frequency can be reduced, and the product research and development process can be accelerated.

The invention belongs to the technical field of traditional Chinese medicines, and particularly relates to preparation and application of seed jade particles. According to the preparation method disclosed by the invention, the preparation process of the seed jade particles is technically upgraded by preferably selecting auxiliary materials and controlling key technical points, and methods and parameters of extraction, concentration, purification, particle forming and the like of the traditional Chinese medicine composition are optimized, so that reliable guarantee is provided for improving the product quality. The finally obtained seed jade particles can meet clinical requirements, all indexes are superior to pharmacopoeia standards, and the seed jade particles are suitable for further expanded production.

The invention relates to lycopene water dispersible powder and a preparation method thereof, and belongs to the technical field of food additives. The method comprises the following steps: esterifying octadecyl alcohol and food-grade phosphoric acid, and reacting with edible gelatin to prepare modified edible gelatin; then lycopene dry powder is dispersed in ethyl acetate, a compound emulsifier, modified edible gelatin and 1, 3-propylene glycol are added, and preliminary embedding is achieved through high-speed shearing and ultrasonic nanocrystallization treatment; and step-by-step vacuum drying, secondary embedding with an excipient, freezing, crushing and screening are carried out, such that the water dispersible powder with a particle size of 0.1-0.2 mm is prepared. Through the hydrophobic binding and charge repulsion effects of the modified gelatin and the synergistic process of ultrasonic nanocrystallization and double embedding, the technical problems that traditional lycopene is poor in water dispersibility, prone to layering, high in solvent residue and insufficient in stability are solved. The prepared product is suitable for healthy food systems such as water-based food, beverage and the like, and has the advantages of convenience in storage and transportation and high bioavailability.

The invention discloses an environmentally friendly device and process for efficiently recovering maleic anhydride with solvent, relates to the technical field of acid anhydride refining and purification, solves the technical problems of low recovery rate and high equipment corrosion in the recovery process of maleic anhydride, and the key points of the technical scheme are that the device includes an absorption tower, a desorption tower, a post-flash tower, a tail gas recovery tower, a centrifugal extractor, a plurality of heat exchangers, a pump and a storage tank; wherein the absorption tower kettle circulating pump, the oil-rich storage tank production outlet, the post-flash tower kettle pump, the post-flash tower circulating cooling pump and the lean oil storage tank production outlet are provided with a plurality of branches, effectively ensuring the content of maleic anhydride in the desorption tower feed and the content of impurities in the circulating absorbent, and making full use of the heat contained in the system. The process of recovering maleic anhydride by the device effectively ensures that the purity of maleic anhydride reaches 99.9% (wt), the yield of maleic anhydride reaches more than 98%, and the recycling rate of the absorbent reaches more than 99.9%; compared with the existing solvent absorption method treatment process, the process has a lower solvent ratio, better device stability, greatly reduces the generation of waste residue, and has a significant effect, which is conducive to the promotion and application in the field of maleic anhydride recovery.

The invention relates to the technical field of green tea production, and discloses a novel fresh tea green production process, which comprises the following steps: tea picking, spreading, green increasing, dehydration, strong light irradiation, rolling, freeze drying and packaging. By means of the technology, the components in the tea leaves can be effectively preserved, the content of tea polyphenol and other substances can be effectively kept through green increasing, strong light irradiation and freeze drying treatment, the taste of the green tea is improved, and the green tea has the good comprehensive performance of being fresh, refreshing, savoury, mellow and resistant to brewing. The green increasing and strong light irradiation process can effectively passivate polyphenol oxidase, and is a key step for improving the taste of the green tea. The process realizes full-mechanized and digital production, greatly reduces production components, and ensures the stability of product quality.

The utility model discloses a landscaping maintenance device which comprises a moving seat, a water storage tank is fixedly arranged at the upper end of the moving seat, a first motor is fixedly arranged at the upper end of the water storage tank, the driving end of the first motor extends into the water storage tank to be fixedly connected with a vertical shaft, a plurality of stirring rods are fixedly arranged on the vertical shaft, and a driving shell is fixedly arranged in the water storage tank. A plurality of transverse shafts are rotationally arranged on the driving shell, a plurality of turning and stirring rods are fixedly arranged on each transverse shaft, the lower end of the vertical shaft extends into the driving shell and is fixedly connected with a driving bevel gear, one end of each transverse shaft extends into the driving shell and is fixedly connected with a driven bevel gear in meshed connection with the driving bevel gear, and a pump body is arranged on the moving seat; the pump body is connected with the water storage tank through a pipeline, so that the stirring rod horizontally stirs a nutrient solution or medicine and water, and the turning and stirring rod turns and stirs the nutrient solution or medicine and water at the bottom of the water storage tank, so that the stirring efficiency is improved, and the phenomenon of stirring dead angles at the bottom of the water storage tank is avoided.

The invention discloses a method for increasing the contents of baicalin and wogonin in a scutellaria baicalensis extract. The method comprises the following steps: (1) preparing a scutellaria baicalensis extracting solution; (2) loading a sample; (3) collecting an eluent; and optionally (4) acid precipitation and purification: preparing the total eluate into a solution with a certain mass concentration, adding acid to adjust the pH value, storing at a proper temperature, standing in a refrigerator, filtering, separating and precipitating, washing the precipitate with water and ethanol until the pH value is neutral, volatilizing the ethanol until no alcohol smell exists, and drying in a drying oven until the weight is constant to obtain the scutellaria baicalensis extract. Wherein the active ingredients comprise baicalin and wogonin. According to the method, purification is carried out successively through macroporous adsorption resin and optional acid precipitation, the content and the yield of wogonin can be guaranteed, meanwhile, the yield and the content of wogonin can be effectively increased, and the method is stable and reliable and can provide thoughts for actual quality improvement and process development.

The utility model relates to a device for purifying and recovering oxygen from ternary positive electrode material sintering tail gas. The device comprises a preprocessor, a heat exchanger I, a buffer tank I, a compressor, a heat exchanger II, a buffer tank II, a recoverer, a pressure equalizing tank, a desorbed gas buffer tank, a product gas buffer tank, a vacuum pump, a program control valve and a regulating valve, the feed gas conveying pipeline is connected with the pretreater, the heat exchanger I, the buffer tank I, the compressor, the heat exchanger II and the buffer tank II in sequence and then is connected with the recoverer; the bottom of the recoverer is respectively connected with a desorbed gas buffer tank and a vacuum pump; and the top of the recoverer is connected with a product gas buffer tank. The device is simple in process, high in oxygen yield, high in automation degree, low in investment, low in operation cost, safe, environment-friendly and energy-saving, oxygen with economic benefits in the sintering tail gas can be recycled, it is ensured that the content of the recycled oxygen is larger than or equal to 99%, and the device can be flexibly adjusted according to production requirements.