219 results about "Rotary evaporator" patented technology

The invention discloses an intelligent automatic control rotary evaporator, and belongs to the technical field of chemical instruments. An intelligent automatic control rotary evaporator comprises a bottom box and a heating pot, a rotary machine head is installed on the bottom box, a condenser and an evaporation bottle are installed on the rotary machine head, and the lower end of the condenser is connected with a collection bottle; precise adjustment of the height and the inclination angle of the evaporation bottle is achieved through the electric telescopic rod and the rotating shaft, and the assembly and disassembly process of components is simplified through the bottle retreating locking nut, the condensation installation nut and other structures; heating temperature control automation is realized by combining a temperature sensor and a control box, and constant-speed rotation of the evaporating flask is ensured through motor driving; the stability of the condenser is enhanced by means of a first adjusting rod and a fixing sleeve, and material adding in a vacuum environment is achieved by integrating a deflation charging valve and a vacuum extraction opening; the control box integrates a multi-module control function, supports the replacement of parts of different specifications, remarkably improves the adjustment convenience, operation efficiency, temperature control precision and experiment adaptability of equipment, and is high in automation degree.

The utility model discloses a system for step-by-step separation and conversion of tar residues, which comprises an ultrasonic cleaning instrument, the liquid outlet end of the ultrasonic cleaning instrument is connected with a solid-liquid separator through a pipeline, the liquid outlet end of an upper liquid layer of the solid-liquid separator is connected with a delivery pump I through a pipeline, and the delivery pump I is connected with the liquid inlet end of a rotary evaporator I through a pipeline. Concentrated organic matters in the rotary evaporator I are conveyed into a vertically arranged chromatographic column through a pipeline, the lower end of the chromatographic column is connected with a sand core funnel, a collecting tank is placed below an outlet of the sand core funnel, the collecting tank is connected with a conveying pump V through a pipeline, and the conveying pump V is connected with a liquid inlet end of the rotary evaporator II through a pipeline. According to the method, high additional organic matters in the tar residues can be effectively extracted by adopting a mode of synergism of ultrasonic-assisted extraction and column chromatography separation, so that resource utilization of the tar residues is realized. The solvent and the eluent selected in the whole process can be recycled through a rotary evaporator, the operation cost is low, and near-zero emission can be realized.

The invention belongs to the technical field of coal washing flotation reagents, and discloses a synthesis process of an environment-friendly coal washing flotation reagent foaming agent, and the synthesis process comprises the following steps: composite reaction; water phase fusion; according to the method, biodegradable alcohols such as pentanol and sec-octanol are adopted as main raw materials, and poloxamer and glycerol are matched, so that the problem of toxic residue of a traditional hydrocarbon foaming agent is avoided. In the synthesis process, low-boiling-point impurities are removed through molecular sieve filtration and a rotary evaporator, it is ensured that the purity of the raw materials is larger than or equal to 99.5%, the proportion of the final product deionized water reaches 40-50%, the use amount of an organic solvent is greatly reduced, nanoscale wrapping of alcohol molecules by an emulsifier OP-10 is achieved through a gradient water adding method and an ultrasonic-assisted emulsification technology, and the content of the alcohol molecules is reduced. And a microemulsion structure with high interfacial film strength is formed. After lauryl sodium sulfate is added as an auxiliary emulsifier, the strength of an oil-water interfacial film is improved by 30% or above, and the half-life period of foam is prolonged to 1.8 times of that of a traditional process.

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.

In accordance with one or more embodiments of the present disclosure, a rotary evaporator is disclosed. The rotary evaporator may include a base, an evaporation vessel, a rotary union, a motor for rotating the evaporation vessel, a heat jacket, a purge tube and a purge system. The evaporation vessel includes a mounting end that is coupled to the rotary union and an opposite end, with an opening defined in the opposite end and a reservoir in communication with the opening for receiving a sample through the opening. The heat jacket heats or cools the sample when contained in the evaporation vessel, and the purge system controllably supplies fluid to the evaporation vessel via the purge tube.

A rotary evaporation device capable of adjusting the vacuum degree comprises a rotary evaporator, a condensation system and a vacuum system. The vacuum system comprises a diaphragm pump capable of adjusting the vacuum degree, an air inlet pipe of the diaphragm pump is connected with a first condensation pipe in the rotary evaporator, an exhaust pipe of the diaphragm pump is connected with an outer pipe inlet of a second condensation pipe, a condensing agent of the condensation system is introduced into an S-shaped inner pipe of the second condensation pipe, and the lower end of the second condensation pipe is communicated with a second collection bottle; the condensing system comprises a condensing agent inlet pipe, a condensing agent outlet pipe and a condensing agent return pipe, the condensing agent inlet pipe is connected with the cold pump and an inlet of the snakelike inner pipe of the first condensing pipe, and the condensing agent outlet pipe is connected with an outlet of the snakelike inner pipe of the first condensing pipe and an inlet of the snakelike inner pipe of the second condensing pipe; and the condensing agent return pipe is used for connecting an outlet of the S-shaped inner pipe of the second condensing pipe and an aspirator in the cold system. According to the device, the proper vacuum degree can be adjusted according to different solvents, and the solvents can be more sufficiently collected.

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 invention discloses an application of a coix seed extract in preparation of a medicine for preventing and treating acute lung injury. The semen coicis extract is obtained by performing reflux extraction on semen coicis by using ethanol, recovering an extraction solvent by using a rotary evaporator and then performing evaporation concentration by using a water bath. The coix seed extract can obviously increase the thymus index, improve the pathological injury of lung tissues, reduce the level of inflammatory factors in serum and lung tissues, possibly inhibit the expression of NLRP3, Caspase-1 and GSDMD-N in NLRP3 signal channel key proteins in the lung tissues, inhibit the NLRP3 signal channel, inhibit inflammation and pyroptosis, and play a role in protecting ALI. The coix seed extract can inhibit the activation of an NLRP3 signal channel and play a role in treating the acute lung injury disease.

The utility model discloses a high-sealing rotary evaporator, and relates to the technical field of evaporators. The device comprises a base, one end of the base is fixedly connected with a water bath heater, one end of the base is provided with a three-way pipe, the top of the three-way pipe is fixedly connected with a condensation pipe, the bottom of the three-way pipe is fixedly connected with a collecting pipe, the input end of the three-way pipe is fixedly connected with a connecting pipe, and the top of the connecting pipe is fixedly connected with a vacuum pump; the input end of the connecting pipe is rotationally connected with an air guide pipe. When the locking threaded ring is pulled to be arranged at the input end of the air guide pipe in a sleeving mode, the locking threaded sleeve is screwed to be in threaded connection with the locking threaded ring, one end of the T-shaped sealing ring is pushed to be inserted into the first rubber sealing ring, and therefore the first rubber sealing ring is extruded to deform and fills a gap between the locking threaded ring and the air guide pipe; therefore, the connection stability and sealing performance between the evaporation beaker and the gas guide pipe are effectively improved, and the evaporation efficiency of the device and the accuracy of experimental results are improved.

The invention discloses a preparation method of soft magnetic composite material powder. The preparation method comprises the following steps: (1) preparing coating liquid; (2) pretreatment: carrying out oil removal, degreasing and hydroxylation treatment on the metal magnetic material powder; (3) coating: filling the metal soft magnetic powder into a rotary evaporator and injecting coating liquid; (4) aging and drying; (5) calcining at low temperature, namely preserving heat at 150-700 DEG C for 0.1-50 hours, wherein the heat can be preserved in stages; the heat preservation atmosphere is N2 / H2 mixed gas, the hydrogen proportion is smaller than or equal to 80 vol%, and the oxygen partial pressure is smaller than or equal to 10 <-3 > Pa; and (6) powder mixing: adding a lubricant, a forming agent or a secondary coating agent into the metal soft magnetic powder coated with Al2O3. The forming agent or the secondary coating agent is silicon resin or epoxy resin, and the lubricant is stearic acid or / and stearate or wax; (7) die forming; (8) heat treatment; (9) impregnation; and 10, curing. Compared with the prior art, the preparation method is simple, good in magnetic performance, safe and environmentally friendly.

Glass vessel (11, 11'), in particular evaporation flask, for a laboratory device (30), in particular a rotary evaporator, with a vessel body (12) made of glass, which defines a receiving space (17) for a medium to be heated, in particular a liquid, characterized by at least one heating resistance element (20) which is in thermally conductive contact with the vessel body (12) and has a connection (23) for supplying electrical energy, wherein the connection (23) comprises at least two sliding contact surfaces (25) which surround a neck (15) of the flask-shaped glass vessel (12).

The utility model relates to the technical field of rotary evaporators, in particular to an anti-suck-back rotary evaporator which comprises a rack, a rotating mechanism is arranged on the upper side of the rack and comprises a rotating rod rotationally arranged on one side of the rack, a connecting column is fixed to one end of the rotating rod, and a through channel is formed in the inner side of the connecting column. A first motor is fixed to the upper side face of the connecting column, the output end of the first motor penetrates through the connecting column to be fixed to the upper side of the adjusting ball valve, and a transmission space is formed in the end, located in the through channel, in the connecting column and in the rotating rod; the other end of the transmission space is rotationally provided with a belt wheel, and the belt wheel and the transmission belt limiting table are sleeved with a transmission belt. The rotary evaporator solves the problem that the conventional rotary evaporator can only prevent the suck-back phenomenon by adjusting parameters in advance and cannot deal with the sudden suck-back condition.

The invention discloses a simulation device for oil-rich coal in-situ negative pressure pyrolysis and oil gas collection, and aims to solve the problem that multi-condition synergistic effect is not considered in oil-rich coal pyrolysis in an existing laboratory. The system comprises a pyrolysis system, an environment and pressure supply system, a condensed oil gas extraction system, a gas extraction system and a tar quality analysis system, the pyrolysis system comprises a pyrolysis cabin, a heating system is arranged in the pyrolysis cabin, the environment and pressure supply system comprises an atmosphere environment supply system and an in-situ pressure supply system, the condensed oil gas extraction system comprises an oil gas collection assembly, the gas extraction system comprises a gas analyzer and a negative pressure extraction assembly, and the tar quality analysis system comprises a rotary evaporator. The heating system, the atmosphere environment supply system, the in-situ pressure supply system, the oil gas collection assembly, the gas analyzer and the rotary evaporator are all connected with the control terminal. The simulation of the pyrolysis process of the oil-rich coal under the multi-condition synergistic effect is realized by constructing multi-condition coupling oil-rich coal pyrolysis characteristic monitoring.

The invention discloses an extraction method of Shatian pomelo peel polysaccharide and a preparation method of a derivative, and belongs to the technical field of polysaccharide extraction. Preparing Shatian pomelo peel powder, performing reflux degreasing treatment on the powder by using petroleum ether, and drying to constant weight; adding a compound enzyme for enzymolysis, and then performing ultrasonic extraction to obtain a mixed solution; continuously placing in a water bath kettle with the temperature of 90 DEG C, cooling to room temperature, transferring into a centrifugal machine for centrifugal treatment, and taking supernate; combining filtrates after multiple times of extraction, carrying out vacuum concentration by using a rotary evaporator, then adding absolute ethyl alcohol into a concentrated solution, carrying out centrifugal washing and freeze-drying, and collecting crude polysaccharide; preparing the crude polysaccharide into a solution, adding a Sevag reagent with the same volume as the crude polysaccharide, then carrying out centrifugal treatment, and repeating the steps for multiple times; and dialyzing the protein-removed polysaccharide solution to obtain the purified Shatian pomelo peel polysaccharide. According to the invention, the Shatian pomelo peel is washed, dried, crushed and then extracted, so that the resource of the Shatian pomelo peel can be fully utilized, the utilization rate of the raw materials is improved, and waste is reduced.

The utility model discloses a precious metal recovery rotary evaporator which comprises a working table, a support is fixedly installed on the upper surface of the working table, a rotary evaporator body is arranged on the front face of the support, a shell is fixedly installed on the upper surface of the working table, and an electric cylinder is fixedly installed on the inner bottom wall of the shell. A sliding shell is fixedly installed at the telescopic end of the electric cylinder, a gear motor is fixedly installed on the right side face of the sliding shell, and a rotating rod is fixedly installed at the output end of the gear motor. According to the device, an electric push rod is arranged to drive a sliding block to slide in a sliding opening, then a transparent plate can be moved to the front of the water bath kettle for protection, the problem that hot water in the water bath kettle splashes outwards to scald workers during use is solved, and the safety during use is improved; the arranged gear motor is used for driving the rotating rod and the water bath kettle to turn over, and meanwhile, under the cooperation of the gear motor and the electric cylinder, water in the water bath kettle can be rapidly discharged.

The utility model discloses a splash-proof ball with liquid adding and discharging functions. The splash-proof ball is arranged between a rotating shaft of the rotary evaporator and an evaporating flask and comprises a hollow ball body, a frosted interface I and a frosted interface II which are fixed on the hollow ball body, a double-hole pipe which is fixed with the frosted interface II and extends into the hollow ball body, a sample adding pipe fixed on the frosted interface II, and a liquid discharging pipe fixed on the hollow ball body. The structure of the splash-proof ball is optimized, so that the splash-proof ball has liquid adding and liquid discharging functions, evaporation liquid can be conveniently supplemented to the evaporation bottle and condensate can be conveniently discharged on the premise that the splash-proof ball is not disassembled, the splash-proof ball does not need to be disassembled in actual rotary evaporation operation, the splash-proof ball is more suitable for continuous rotary evaporation treatment, and the production efficiency is improved. Convenience is provided for rotary evaporation of a large amount of rotary evaporation liquid.

The utility model provides a rotary evaporator which comprises a rack, a machine head, a heating pot, a glass shaft, a condenser, an evaporation bottle and a collection bottle, and further comprises a clamping piece installed at the end, away from the condenser, of the glass shaft, the clamping piece is used for clamping evaporation bottles of different specifications and calibers, and the clamping piece comprises an installation plate fixedly connected to the end, away from the condenser, of the glass shaft; the mounting ring is fixedly connected to the side, away from the condenser, of the mounting plate; the clamping plates are slidably connected to the mounting plate in the radial direction of the mounting ring, the multiple clamping plates are distributed around the axis of the mounting ring in a circumferential array mode, and the clamping plates are used for clamping an evaporation bottle; and the adjusting mechanism is mounted on the mounting plate and used for controlling the clamping plate to move in the radial direction of the mounting ring. According to the rotary evaporator, evaporation flasks with different calibers can be clamped, and the use universality of the rotary evaporator is improved.

The invention discloses a benzo [fg] naphtho [1, 2, 3-op] tetracene compound and a synthesis method thereof, and the synthesis method comprises the following steps: weighing 1, 2, 3-triphenyl naphthalene and anhydrous aluminum trichloride, and then adding into a reaction tube filled with anhydrous chlorobenzene; repeatedly replacing nitrogen for three times through a vacuum pump and a double-row pipe, placing the reaction pipe on a stirrer after the reaction pipe is in a nitrogen atmosphere, and stirring and reacting for a period of time under the condition of room temperature; after the reaction is finished, extracting, drying an organic phase, and concentrating by a rotary evaporator to obtain residues; and separating the residue by column chromatography to obtain the product benzo [fg] naphtho [1, 2, 3-op] tetracene.

The invention relates to an evaporator, in particular to a multi-manifold rotary evaporator and application of the multi-manifold rotary evaporator in a cattle bone clear soup experiment, the multi-manifold rotary evaporator comprises a supporting frame body and a buffer tank installed on the supporting frame body, and the buffer tank is connected with an evaporation piece installed on the supporting frame body. A collection connecting port of the buffer tank is communicated with a collection bottle for collecting condensed liquid; the device further comprises a condensation tank communicated with the buffer tank, a conical pipe with the passing area gradually reduced in the feeding direction is formed in the position, close to a feeding port of the condensation tank, in the condensation tank, a collecting groove is formed between the conical pipe and the inner wall of the condensation tank, and the collecting groove is communicated with the collecting connector through a communicating piece. The air inlet and the liquid outlet of the condensation tank are separately arranged, so that the problem that the liquefied material cannot smoothly fall due to the action of air inlet pressure is prevented, and meanwhile, the problem that the heat exchange efficiency becomes low due to the fact that the liquefied material is dispersed in the condensation tank under the impact force of the vaporized material because the liquefied material cannot flow out can be effectively prevented.

The utility model relates to the technical field of concentrated extracting solution, and discloses a rotary evaporator for extracting enteromorpha polysaccharide, which solves the problems in the background technology, and comprises a bottom plate, a rotary evaporator main body is arranged on the bottom plate, the rotary evaporator main body comprises a heating kettle and a distilling flask, the distillation bottle is arranged above the heating kettle, a rotating shaft is arranged in the distillation bottle and is arranged in the center of the distillation bottle, a scraper blade is arranged on the rotating shaft, an inner magnetic rotor is arranged on the rotating shaft, the bottom plate is provided with an extension part, the extension part is provided with a top plate parallel to the bottom plate, and the top plate is provided with an outer magnetic rotor. The top plate is provided with a driving motor, the output end of the driving motor is provided with an outer magnetic rotor, and the outer magnetic rotor is matched with the inner magnetic rotor. The rotary evaporator has the effect of solving the problems that when a traditional rotary evaporator is used for treating a high-viscosity solution, a liquid film is not uniform, the evaporation rate is reduced, and residues are prone to adhering to the wall.

The three-axis stacker crane for the simulation experiment comprises a fixed bottom plate, a portal frame is fixedly connected to the top of the fixed bottom plate, a first electric sliding rail is fixedly connected to the top of the portal frame, and the first electric sliding rail is slidably connected with a sliding frame through a sliding block; the inner wall of the sliding frame is fixedly connected with a second electric sliding rail. The invention relates to the technical field of three-axis stacking machines. Through cooperative operation of a high-pressure air pump, an air spraying pipe, an oil sludge storage box, a multi-stage filter, a miniature centrifugal machine, an activated carbon filter cylinder, a miniature rotary evaporator, an oil conveying hose and an oil storage bin, the equipment can refine cleaned oil sludge into lubricating oil, and the loss rate of the lubricating oil of the equipment is reduced; and by means of mutual cooperation of a multi-stage filter, a fourth electric sliding rail, a sliding cleaning brush, a connecting box and a chipping storage bin, chippings can be collected and stored, so that the chippings can be prevented from blocking the multi-stage filter, and a worker can recover the chippings more conveniently.

The invention relates to the technical field of all-vanadium redox flow batteries, and discloses a mixed acid-based electrolyte and a preparation method and application thereof.The preparation method at least comprises the following steps that a sulfuric acid-based vanadium electrolyte is prepared through a chemical reduction-electrolysis method, the sulfuric acid-based vanadium electrolyte is poured into a rotary container of a rotary evaporator, rotary evaporation operation is conducted, and the mixed acid-based electrolyte is obtained; adding a barium chloride solution into the sulfuric acid-based vanadium concentrated solution, fully stirring to obtain a sulfate acid-based vanadium crude solution, filtering the sulfate acid-based vanadium crude solution by using a microfiltration membrane to obtain a filtrate, namely the sulfate acid-based vanadium concentrated solution, adding deionized water into the sulfate acid-based vanadium concentrated solution, diluting the concentrated solution, and filtering to obtain the sulfate acid-based vanadium sulfate. The mixed acid group vanadium electrolyte has the advantages of being high in energy density, wide in use temperature range and good in vanadium stability, and the problems that the hydrochloric acid concentration is difficult to control accurately and the environment is polluted due to hydrochloric acid volatilization and chlorine evolution during electrolysis in a conventional method are solved.

The application provides a preparation method of a multifunctional drug carrier, and the multifunctional drug carrier is curcumin-loaded nanoliposomes prepared by adopting a thin film dispersion method combined with dynamic high pressure microfluidization (DHPM), and the preparation method comprises the following steps: adding phospholipid, cholesterol, FA-F87, TPGS and curcumin into anhydrous ethanol for dissolving, transferring the solution to a 1000 mL round-bottom flask after the solution is completely dissolved to a clear state, and placing the solution on a rotary evaporator for removing ethanol by evaporation under reduced pressure to form a lipid film; the lipid film is hydrated under normal pressure at 45 DEG C for 30 min to obtain a curcumin coarse liposome solution; and the curcumin coarse liposome solution is treated twice by DHPM under the condition of 120 MPa to obtain the curcumin-loaded nanoliposomes; the curcumin-loaded nanoliposomes prepared by the application have good biocompatibility and stability, can improve the stability, solubility and drug release performance of a drug, and further improve the drug delivery effect and therapeutic effect of the drug.

The invention relates to the field of organic synthesis, in particular to equipment and a method for preparing fluorine-containing oxadiazole. The equipment is a rotary evaporator, a hollow pipe, used for steam circulation, of the rotary evaporator is connected with an evaporation bottle, the hollow pipe rotates to drive the evaporation bottle to rotate, and the evaporation bottle is partially arranged in a water bath kettle; a bottle retreating mechanism is arranged on the rotary evaporator and can drive the evaporation bottle to rotate and push the evaporation bottle to move in the axis direction of the hollow pipe. According to the rotary evaporation device, the evaporation bottle can be rapidly fixed in the mode that the rotating ring b extrudes the rotating frame, follow-up rotary evaporation work can be conveniently carried out, after rotary evaporation is finished, the seizure state of the evaporation bottle can be rapidly broken through the bottle retreating mechanism, in the whole operation process, an operator does not need to hold the evaporation bottle to forcefully rotate and pull the evaporation bottle, and operation is convenient. The evaporation flask can be indirectly protected only by rotating the rotating deflector rod a and the rotating deflector rod b, so that the operation is more labor-saving, and collision between the evaporation flask and the water bath kettle due to overexertion is avoided.

The invention provides a method for extracting phthalide chemical components in angelica sinensis, which comprises the following steps of: firstly, shearing and emulsifying the angelica sinensis at a high speed, carrying out high-speed shearing and extraction by using petroleum ether and ethyl acetate as extraction solvents, and recovering the solvents from the extract under reduced pressure through a rotary evaporator to obtain angelica sinensis essential oil; wherein the extracted essential oil contains senkyunolide A, ligustilide and butylphthalide. Aiming at the characteristics that the phthalide component in the angelica volatile oil is thermally unstable and is easy to oxidize, the phthalide component in the angelica volatile oil can be rapidly extracted under a low-temperature condition by combining a petroleum ether-ethyl acetate solution system with a high-speed shearing, dispersing and emulsifying technology, and the activity of the angelica volatile oil can be better maintained. The method has the characteristics of low temperature, simplicity in operation, short time and low cost.

The utility model discloses a rotary evaporator, including frame, the frame top end installation is equipped with rotating equipment, the rotating equipment output is provided with quick -mounting mechanism, quick -mounting mechanism includes fixed sleeve and spigot, and fixed sleeve is fixed in rotating equipment output, and spigot is inserted in fixed sleeve and is fixed with rotatory bottle in bottom end, and fixed sleeve is equipped with the gasket in, and fixed sleeve outer wall is equipped with the mounting groove, the mounting groove is provided with a plurality of groups and is equipped with the clamping block in the inside, and spigot outer wall is equipped with the clamping groove, and a plurality of clamping blocks are all engaged in the clamping groove, and fixed sleeve outer wall slidingly is equipped with the sliding sleeve, and the sliding sleeve is in contact with a plurality of clamping blocks outside, and a plurality of clamping blocks top all are equipped with the pivot, and a plurality of pivots are rotatoryly installed in a plurality of mounting grooves, and a plurality of pivots all are provided as the damping pivot, and quick -mounting mechanism has solved the technical problem of traditional rotary evaporator rotatory bottle replacement complex time -consuming, and the spigot and fixed sleeve's insertion structure has realized the quick connection and separation of rotatory bottle.

The present invention discloses a method for preparing a 9-aryl-10-sulfonylphenanthrene compound under electrocatalysis, which belongs to the field of organic synthesis technology. The method comprises the following steps: adding a substituted diaryl internal alkyne, a substituted benzenesulfonyl hydrazide, and tetrabutylammonium tetrafluoroborate to a reactor. After the reaction is completed by electrocatalytic promotion in a solvent, a rotary evaporator is used to concentrate the crude product, and the crude product is separated by silica gel column chromatography to obtain a target product. The present invention provides a method for synthesizing a 9-aryl-10-sulfonylphenanthrene compound under electrocatalysis, which has the characteristics of scientific rationality, mild conditions, simple operation, and no need for external oxidants and additives. The reaction equation is as follows:

The utility model discloses a rotary evaporator for collecting various solvents, which comprises a base, a support and a heater are arranged on the base, a rotator is arranged on the support, a distilling flask matched with the heater is arranged at one end of the rotator, a communicating flask is arranged at the other end of the rotator, the communicating flask is connected with a condensing component, and the condensing component is connected with the distilling flask. The condensation assembly comprises at least two condensation pipes arranged in parallel, a main pipe communicated with the communication bottle is arranged on the communication bottle, one end of the main pipe is connected with auxiliary pipes in one-to-one correspondence with the condensation pipes through a multi-way valve, and collection bottles are arranged at the bottoms of the condensation pipes. The multi-way valve at one end of the main pipe can be used for respectively communicating the distillation bottle with a plurality of groups of condensation pipes, so that various solvents with different boiling points are collected, the waiting time is shortened, and the collection efficiency of the various solvents is improved.

The invention relates to the technical field of chemistry and chemical engineering experimental equipment, in particular to a high-speed distillation instrument which comprises a solvent evaporation system, a solvent condensation system and a controller which are associated with one another. The solvent evaporation system comprises a hot bath pool, an evaporation bottle, a two-way glass shaft, a locking mechanism, a driving motor and a steam guide bottle, and is used for evaporation of a volatile solvent and steam guide; the solvent condensing system comprises a bathing pool, a double-arm condenser, a cold liquid pump, an air pump and a collecting bottle and is used for condensing and recycling solvent steam; the controller is used for controlling the running states of the solvent evaporation system and the solvent condensation system, so that the volatile solvent is efficiently distilled and recycled in a closed environment in the high-speed distillation instrument. The high-speed distillation instrument provided by the invention has the beneficial effects that the bumping phenomenon of a rotary evaporator can be completely eradicated, and the high-speed distillation instrument has the advantages of high working efficiency, environment friendliness, high safety and the like.

The present application relates to the technical field of chemical experiment equipment, in particular to a rotary evaporator, and more particularly to a rotary evaporator capable of accurately measuring the amount of concentrated liquid and / or distillate. The rotary evaporator capable of accurately measuring the amount of concentrated liquid and / or distillate improves the spherical collecting bottle into a metering tube with upper and lower valves and scale lines, or connects a metering tube with upper and lower valves and scale lines at the opening of the bottom of the spherical collecting bottle; a spherical bulge capable of accurate measurement is arranged between the lower part of the metering tube and the two valves to meet the need of expansion; the opening of the bottom of the working position of the spherical distillation bottle is connected with a quantitative tube with upper and lower valves and scale lines, and a spherical bulge capable of accurate measurement is arranged between the lower part of the quantitative tube and the two valves to meet the need of expansion; the distillation bottle and / or the collecting bottle can be not disassembled, and accurate measurement, quantitative control and one-time liquid discharge of the amount of concentrated liquid and / or distillate are realized. The improved rotary evaporator is simple in structure, convenient to process, high in reliability and low in cost.