23 results about "Rotary evaporator" patented technology

A process for producing composite electrode particles coated with a granular silicon structure, a carbon layer, and zinc oxide, comprising the following steps: introducing several first silicon particles, a macromolecular material, bitumen, and an alcohol solution into a grinding mill for mixing to cause some of the first silicon particles to form several composite silicon particles; then introducing several porous carbon particles into the grinding mill for mixing to form a first mixture; then introducing the first mixture into a rotary evaporator to obtain several mixed powders; then introducing the mixed powders into a sintering furnace to perform atmospheric sintering to obtain several first composite particles coated with the carbon layer that incorporates the first silicon particles and the composite silicon particles;and then the introduction of several zinc oxide particles and the first composite particles into a roller mixer for mixing in order to obtain the composite electrode particles.

The utility model relates to rotary evaporator bottle technical field, concretely relates to a kind of anti-overflow stirring assembly for rotary evaporator bottle, the anti-overflow stirring assembly for rotary evaporator bottle includes stirring rod and at least one stirring vane, the stirring rod is inserted into the rod body inside rotary evaporator and is provided with at least one described stirring vane, multiple stirring holes are uniformly opened on the stirring vane. When the rotary evaporator starts to rotate in actual application, the stirring rod in the bottle rotates with the rotary evaporator, and at the same time, the blade surface of the stirring vane on the stirring rod continuously shears the liquid in the bottle, thereby playing a stirring role, making the liquid in the bottle evenly heated, to prevent violent boiling. Further based on multiple stirring holes opened on the stirring vane, while stirring liquid, liquid can also be turned upside down based on stirring hole, thereby further improving stirring efficiency, making the liquid in the bottle more evenly heated, effectively preventing liquid from violent boiling.

The present application provides a kind of nitrogen-doped catalyst and catalytic wet oxidation method, catalyst is carried out by the coprecipitation reaction of soluble salt of iron, lanthanum and copper, and in rotary evaporator device, aging, dry and then mixed with nitrogen-containing precursor grinding, calcination is obtained under inert atmosphere.The specific surface area of catalyst of the present application is 60-120cm 2 ·g ‑1 , the doping amount of nitrogen is 0.5-2.0wt%.For catalytic wet oxidation, due to the doping of copper in B site, it is anchored in the lanthanum ferrite framework, reducing the loss of metal copper, making the catalyst more stable, and improving the catalytic performance of lanthanum ferrite catalyst.

This invention provides a method for extracting polysaccharides from *Nostoc commune* with immunomodulatory activity. Belonging to the field of functional food technology, the method includes the following steps: pulverizing dried *Nostoc commune* into powder; using the powder obtained in step S1 as raw material, extracting with 60% ethanol under ultrasonic assistance to obtain a crude polysaccharide extract; removing the ethanol from the crude polysaccharide extract in step S2 using a vacuum rotary evaporator, precipitating the polysaccharide from a 90% ethanol solution, and then dialyzing and freeze-drying it to obtain purified crude polysaccharide; eluting the purified crude polysaccharide using a Sephadex G-75 column, collecting the eluent in separate tubes and plotting elution curves, collecting the eluent from the tube with the peak on the elution curve and freeze-drying it to obtain a low molecular weight polysaccharide, which is NCEP.

This invention provides an efficient method for preparing halogen-doped graphene quantum dots, comprising the following steps: adding 1,3,6-trinitropyrene to a polytetrafluoroethylene reactor, adding a halobenzene solvent, ultrasonically dispersing the mixture, and then carrying out a solvothermal reaction. After the reactor cools to room temperature, the solvent is removed by a rotary evaporator, finally obtaining graphene quantum dot powder. Using halobenzene as both solvent and dopant source enables one-step completion of doping and synthesis, avoiding the need for additional dopants and catalysts. The reaction system is simple, the process flow is greatly simplified, and the preparation cycle is significantly shortened.

The application provides a kind of near-infrared absorption cerium-doped carbon quantum dots nanoscale enzyme, preparation method and application, it is related to biomedical technology field, wherein the preparation method steps are as follows: S1: take hydrochloric acid dopamine, melamine, cerium nitrate, use anhydrous ethanol to soak thoroughly;S2: the mixture obtained in S1 is transferred to polytetrafluoroethylene lining hydrothermal reactor for reaction;S3: the solution in S2 is reacted with high-speed centrifugation, take supernatant and wash with anhydrous ethanol;After washing, dialysis is carried out with anhydrous ethanol, after dialysis, the solution in dialysis bag is spin-dried in a rotary evaporator, and the CeCDs solid is stored at-20 DEG C.The cerium-doped carbon quantum dots constructed by the application have good biocompatibility, can be applied to anti-parkinson disease, the carbon-based nanoscale enzyme CeCDs has SOD and CAT nanoscale enzyme catalytic activity, is used for the treatment of Parkinson's disease, and can pass through blood-brain barrier, and has good biocompatibility and treatment potential.

This invention belongs to the pharmaceutical field and specifically relates to magnesium hydroxide nanoparticles for treating joint pain and a method for preparing the same. The preparation method is as follows: a soluble magnesium salt is dissolved in purified water to obtain a magnesium salt solution; a soluble metal hydroxide is dissolved in purified water to obtain a metal hydroxide solution; a phospholipid is dissolved in an organic solvent to obtain a phospholipid solution; the phospholipid solution is removed by rotary vapor deposition to remove the organic reagents; after a thin film is formed, the magnesium salt solution is added to hydrate it to obtain a hydrated solution; the metal hydroxide solution is added to the hydrated solution to perform nano-processing; and the process is completed. The preparation method is simple and easy to control, and magnesium hydroxide nanoparticles can be prepared using only magnesium salt, hydroxide, and phospholipid. Verified by rat studies, after preparing magnesium salt into nano-level magnesium hydroxide using pharmaceutical formulation technology, it has joint analgesic effects, the duration of analgesia is significantly extended, the frequency of administration is greatly reduced, and thus the patient's suffering can be reduced.

The utility model discloses a kind of evaporating flask mounting device and rotary evaporator, belong to rotary evaporator technical field.A kind of evaporating flask mounting device, by the thread connection design of bottle withdrawal locking nut and bottle withdrawal ware, the convenient disassembly and installation of evaporating flask piece are realized, and experimental efficiency is greatly improved;Through the auxiliary fixing function of bottle withdrawal locking nut to flow guide pipe, cooperate sealing washer structure, the stability of liquid flow guide and experimental safety are guaranteed;Motor-driven transmission structure can make evaporating flask piece obtain adjustable rotating speed, drive liquid uniform flow, significantly improve evaporation efficiency;Through the combination structure of upper connector, installation locking nut and flow guide pipe, the airtightness communication of condenser and evaporating flask piece is realized, improve condensate recovery rate, optimize entire evaporation process.

This invention discloses a method for extracting and purifying bamboo leaf polyphenols. Bamboo leaves are powdered and extracted using 50% ethanol as a solvent in a water bath with heating and stirring. After filtering, the extract is transferred to a rotary evaporator for evaporation and concentration to obtain a concentrated bamboo leaf polyphenol extract. The crude bamboo leaf polyphenol extract is then diluted and subjected to constant-temperature shaking adsorption to obtain a purified bamboo leaf polyphenol extract. This invention provides a low-cost and high-yield method for extracting and purifying bamboo leaf polyphenols. While reducing the difficulty of replication, the extraction rate reaches 1.6%, which is considered high. Compared to the costly and technically complex ultrasonic-assisted extraction method (0.8% extraction rate) and high-voltage pulsed electric field extraction (1.26% extraction rate), this invention significantly improves the extraction rate while reducing extraction costs.

The application discloses a preparation method of a composite phase change material for solving the supercooling problem of sodium acetate trihydrate, and relates to the technical field of phase change material production, and comprises the following steps: S1, 30 g of natural crystalline bischofite is weighed, dried at 120 DEG C for 12 h, and then dissolved in 90 g of anhydrous ethanol to form a magnesium chloride solution; S2, the magnesium chloride solution is filtered by using a vacuum filtration bottle, and insoluble substances are separated; the ethanol component in the obtained solution after filtration is evaporated by using a rotary evaporator, and a precipitate, magnesium chloride hexahydrate MgCl2.6H2O, is obtained; S3, the magnesium chloride hexahydrate MgCl2.6H2O is combined with sodium acetate trihydrate SAT at an optimized mass ratio of 3:17; and S4, after complete melting and uniformity, 1% sodium polyacrylate PAAS is added as a thickening agent, and the mixture is packaged in expanded graphite EG. The method can realize effective utilization of the by-product bischofite of a salt lake, and simultaneously solve the supercooling problem of SAT.

The present application relates to the technical field of radiochemistry analysis, and particularly relates to a rapid analysis and determination method of thorium in water, which comprises a step of pretreating a water sample to be measured to obtain a concentrated solution and a step of analyzing and determining the thorium content in the concentrated solution; wherein the method for pretreating the water sample to be measured comprises the following steps: taking the water sample to be measured, placing it in a rotary evaporator to perform vacuum distillation, distilling part of the water in the water sample to be measured, taking out the water sample in the flask after vacuum distillation, washing the flask with nitric acid, and combining the washing liquid with the taken-out water sample to prepare the concentrated solution. The rapid analysis and determination method of thorium in water provided by the present application uses a rotary evaporator to perform rotary evaporation on the sample to be measured as pretreatment to reduce the sample volume, optimizes the subsequent analysis process, can shorten the analysis and determination time to about 5 hours, greatly reduces the time consumption of the entire analysis process, and improves the work efficiency.

The utility model discloses a multi-angle rotary evaporator, including base, install water bath kettle on the base, and the top mouth department of water bath kettle is covered with the glass cover that is hemispherical, and the bottom outside of glass cover is provided with the fixed ring, and the fixed ring is connected through the snap between water bath kettle, and the outside of glass cover is provided with the explosion -proof net that is hemispherical, and the bottom of explosion -proof net is fixed on the fixed ring, still install the lift on the base, and the lifting plate of lift is installed angle adjusting structure, and the connector is installed on angle adjusting structure, and the two interfaces of connector are connected with condenser and rotary bottle respectively, the multi-angle rotary evaporator, through setting the combination of fixed ring and explosion -proof net, constitutes the reliable protection system, and the fixed ring is closely connected with water bath kettle through the snap, can make the explosion -proof net fixed on the top of water bath kettle, and the existence of explosion -proof net effectively prevents the splashing of the fragment when rotary bottle is washed away or bottle body burst, guarantees the safety of operator and equipment.

1. The name of the design product: graphical user interface for rotary evaporator management of electronic equipment. 2. The use of the design product: for an electronic device. 3. The design points of the design product: the content of the graphical user interface. 4. The picture or photo that best indicates the design points: front view. 5. The use of the graphical user interface: for displaying the running parameters and related curve information of the rotary evaporator, and realizing the switching of related function interfaces. 6. The human-computer interaction mode of the graphical user interface: the front view is automatically displayed for 3s and then enters interface change state figure 1; in interface change state figure 1, the "menu" at the bottom of the page is clicked to enter interface change state figure 2; in interface change state figure 2, the "curve" at the upper right of the page is clicked to enter interface change state figure 3; in interface change state figure 3, the "square icon" before "vapor temperature" and the "square icon" before "condensation temperature" in the middle of the page are clicked to enter interface change state figure 4.

This utility model relates to the field of rotary evaporator technology, specifically to a side-plate spray rotary evaporator. The side-plate spray rotary evaporator includes a rotary evaporator and multiple side plates. Each side plate includes an upper inclined plate and a lower spiral plate connected to the upper inclined plate. One end of each lower spiral plate is connected to the center point of the bottom of the rotary evaporator at a predetermined angle. One end of each upper inclined plate extends along the evaporator wall towards the evaporator opening, forming a predetermined angle with the evaporator wall. Using this side-plate spray rotary evaporator, the predetermined angle between the upper inclined plates and the evaporator wall reduces liquid slippage during rotation, enhances mixing, and prevents liquid accumulation in a certain area, thereby improving overall rotary evaporation efficiency. Furthermore, the lower spiral plate further extends the liquid flow path, increases contact time with the hot wall, promotes evaporation, and forms a thinner liquid film.

A method for manufacturing composite electrode particles coated with a granular silicon structure, a carbon layer and zinc oxide includes the steps of: placing plural first silicon particles, a macromolecule material, a bitumen and an alcohol solution into a grinding mill for mixing to cause that a part of the first silicon particles form plural composite silicon particles; then placing plural porous carbon particles into the grinding mill for mixing to form a first mixture; then placing the first mixture into a rotary evaporator to obtain plural mixture powders; then placing the mixture powders into a sintering furnace for performing an atmosphere sintering to obtain plural first composite particles coated with the carbon layer having the first silicon particles and composite silicon particles; and then placing plural zinc oxide particles and the first composite particles into a roller mixer for mixing to obtain the composite electrode particles.

The utility model discloses a kind of experimental rotary evaporator blowout preventers, it is related to experimental apparatus technical field, including splash-proof ball, rotary evaporator bottle and rotary knife group, the splash-proof ball is inserted in rotary evaporator bottle, the rotary knife group is installed in the neck of rotary evaporator bottle, the rotary knife group includes shaft, ceramic bearing and spiral blade, the bottom of the shaft is provided with elastic telescopic link, the top of telescopic link is provided with arc backrest, the top of the shaft is provided with limit rod, the neck of rotary evaporator bottle is correspondingly provided with limit groove to limit rod, the spiral blade is rotatably arranged in the side of shaft close to bottle body by ceramic bearing, the outer edge of the spiral blade is comb tooth shape. The utility model is convenient to install, can improve the breaking efficiency of bubble in rotary evaporation process, effectively reduce the violent boiling situation caused by bubble.

The utility model discloses an automatic rotary evaporation integrated machine of integrated many parameter intelligence regulation and control, including frame, rotary evaporation main part module, cooling system, automatic heating system, vacuum system and control system. The utility model discloses through setting flow switch, pressure transmitter and liquid level sensor etc. detection device, can real -time monitoring cooling system's flow, rotary evaporation bottle's pressure in, liquid level, temperature and vacuum degree etc. parameter, and will these parameters transmission give control system. Control system according to these parameters automatic regulation circulating pump, heating device and vacuum pump's operating state, has realized automatic cooling cycle, automatic reaction heating, pressure and the automatic detection and control of liquid level, has improved the degree of automation of equipment, has reduced manual intervention, has reduced the working strength of operating personnel.

The utility model discloses a kind of rotary evaporators for medical synthetic experiment, including body and sleeve, the inside of sleeve is equipped with flow guide pipe, the outer wall of flow guide pipe is fixedly connected with the inner wall of sleeve by multiple connecting beams, through hole is equipped between multiple connecting beams, one end of sleeve is equipped with frosted external interface and the opening connection of flask on body, the other end of sleeve is equipped with frosted internal interface and the connecting pipe connection on body, one end of flow guide pipe is inserted into flask, the other end of flow guide pipe extends to the vicinity of pressure relief valve mounting hole of condenser tube on body, flow guide valve can be inserted into pressure relief valve mounting hole, flow guide valve is inserted into one side of condenser tube and is connected with flow guide pipe.The utility model provides a kind of rotary evaporators for medical synthetic experiment, can be in without taking down flask case through flow guide pipe to flask in negative pressure suction to supplement product, hinged movable rod is arranged, movable rod is clamped in flask mouth position by the hoop of tail end, avoid flask to slip.

This utility model discloses an evaporation and concentration device for preparing inorganic salts, including a reaction vessel, a stirring device, spiral evaporation blades, a rotary evaporator, a circulation pipe, a circulation pump, and a heat exchanger. The stirring device is disposed inside the reaction vessel, and the rotary evaporator is connected to the stirring device. The spiral evaporation blades are connected to the inner wall of the reaction vessel and cooperate with the rotary evaporator. The two ends of the circulation pipe are connected to the bottom of the reaction vessel and the rotary evaporator, respectively. The circulation pump and the heat exchanger are connected to the circulation pipe. This evaporation and concentration device for preparing inorganic salts has a simple structure and is convenient and practical. The reaction liquid is introduced into the annular overflow channel of the rotary evaporator through the circulation pipe, so that the reaction liquid overflows into the annular disk and spreads quickly, thereby increasing the heat dissipation surface and improving the concentration speed.

A rotary evaporator for a snowflake machine, comprising a rotary evaporator body (1), wherein a driving device is connected to a first end of the rotary evaporator body (1), and a refrigeration device is connected to a second end of the rotary evaporator body (1); an evaporator (2) is provided in the rotary evaporator body (1); and the refrigeration device comprises a capillary tube (3) and a return pipe (4), a first end of the capillary tube (3) extending into the rotary evaporator body (1) and being hermetically connected to a first end of the evaporator (2), and a first end of the return pipe (4) extending into the rotary evaporator body (1) and being hermetically connected to a second end of the evaporator (2). By means of sealing a refrigerant in the evaporator (2), the capillary tube (3), the return pipe (4), a condenser and a compressor, a closed circulation line is formed, such that there is no need for a sealing structure to seal the refrigerant, and there is no risk of refrigerant leakage, thereby ensuring long-term stable performance of a product.

The utility model belongs to rotary evaporator cleaning technical field discloses a kind of rotary evaporators of convenient cleaning, its structure includes bearing table, evaporating flask and ultrasonic cleaning machine tank: the inside of bearing table is equipped with ultrasonic cleaning machine tank, the both sides of bearing table are equipped with sliding slot one;The inside of sliding slot one is slidably connected with sliding block, the upper surface of sliding block is fixedly connected with support block, the inside of support block is equipped with sliding slot two, the inside of sliding slot two is slidably connected with mobile bearing block.This kind of rotary evaporator of convenient cleaning, by ultrasonic auxiliary collection evaporating flask inside's diped extract, utilize the high-frequency vibration generated by ultrasonic, effectively weaken the adhesion between diped extract and evaporating flask wall, promote diped extract to fall off from bottle wall fast, not only greatly improve scraping efficiency, save manpower and time cost, can also reduce diped extract residue, significantly improve recovery efficiency, while the quality and active ingredient of diped extract can be stabilized, avoid introducing solvent, reduce the risk of diped extract being contaminated.

This utility model discloses a concentration device for monosaccharide production, including a chiller, a metering pump, a rotary evaporator, and a vacuum pump. The chiller is equipped with a chilled water inlet pipe, a chilled water outlet pipe, and a drain pipe. The rotary evaporator is equipped with a condenser tube, a blow-off bend, a feed pipe, a feed valve, a collection flask, and a distillation flask. This utility model offers superior concentration results compared to traditional methods. It allows for control of the chilled water temperature, recovery of condensate, improved concentration efficiency, avoidance of condensate waste, and condensate recycling, thus reducing costs and increasing efficiency.

The application discloses carbon-coated iron-cobalt-chromium nanoparticles as well as a preparation method and application thereof, and the preparation method comprises the following steps: mixing an iron compound, a cobalt salt, a chromium salt and 2-methyl imidazole with a solvent, stirring and reacting, and then performing spin-drying by using a rotary evaporator to obtain an iron-cobalt-chromium three-metal complex precursor; and pyrolyzing the iron-cobalt-chromium three-metal complex precursor under the protection of an inert gas to obtain the carbon-coated iron-cobalt-chromium nanoparticles. s The graphitized carbon layer of the material can isolate oxygen and corrosive medium, and maintain high M s The electronic coupling effect between the carbon shell and the iron-cobalt-chromium interface can reduce lattice distortion, inhibit magnetic domain wall pinning and reduce coercivity.