200 results about "Alcohol burner" patented technology

The invention discloses a cultivation method of tuckahoe, which comprises the steps of: (1) firstly, the epidermis of the tuckahoe is cut; the tuckahoe is superficially sterilized by 70 to 75% of ethanol and washed with sterile water; the water content of the tuckahoe is blotted up by disinfection cloth or a filter paper; in an aseptic inoculation box, an alcohol burner is lightened, the processed tuckahoe is sliced off by an abacterial knife near fire and the cross section is scraped into be cambered and successively scraped for twice; on the second scraping position, blocks like wheat size are connected on a pure strain culture medium, placed in a greenhouse, and cultured in the temperature of 25 to 30 DEG C till mycelial overgrows; the blocks which are white, are not infected by mixed bacterium, are villous, dense and craggy, vigorously and uniformly grow, secretes white milk pearl mycelium are pure strains; (2) a primary strain cultivation is carried out; (3) a second class strain cultivation is carried out; (4) a third class strain cultivation is carried out. The method is characterized by short production period of mycelium, excellent and stable tuckahoe quality and high yield.

The invention provides a preparation method of flexible carbon nanoparticles, which is applied to produce a flexible carbon nanoparticle layer. The method provided by the invention is characterized by comprising the following steps: putting a clean substrate above the flame of a fired spirit lamp for baking until carbon nanoparticles are generated on the substrate, coating a flexible organic polymer on the carbon nanoparticles, curing, removing the flexible organic polymer coating from the substrate, and transferring the produced carbon nanoparticles to the flexible organic polymer coating, to obtain the flexible carbon nanoparticle layer. The carbon nanoparticles have wide application prospects in the fields of field electron emission cold cathodes, noble element nanoparticle carriers, infrared detection and hydrophobic materials and the like.

The invention relates to a digitalized biological defensive epidemiology operation box, the operation box is characterized by comprising a No. I box body as an electronic module and a No. II box body as an electronic module; a reinforced computer is arranged in an upper box body of a No. I box body, a wind velocity anemoscope, a PDA, a digital camera, a digital recording pen, a LED lighting headlight, a stationery bag, a keyboard, a mouse and auxiliary equipment are arranged in a lower box body; a medical article bag is arranged in an upper box body of a No. II box body, a stainless steel alcohol burner, a plurality of reagent bottles, a hygrothermograph, a stainless steel sterilizer case, a blood sampling article box, a article bag for collecting, a pair of protective spectacles used for medical application, a demountable rack for a test tube, a haemostat, a set of devices of specimen accumulating bottles and a plurality of caution strips. The inner part of the box body uses a modularization arrangement which has the advantages of compact structure and convenient operation, an electrical module and a medical module are cooperated for working to realize a whole process of on-site investigation of on-site epidemiology investigation specimen acquisition, storage, evacuation and the like.

A portable alcohol burner is designed to use ethanol as a fuel for indoor / outdoor settings. The burner has a fuel chamber filled with ceramic fiber filler permeated with alcohol. A perforated baffle cage is fitted in the housing and is completely surrounded by the filler material. As alcohol vapors escape from the fuel chamber and rise through the perforations in the baffle cage they can be ignited to create a desired pleasing flame pattern.

The invention relates to a chemical experiment demonstration device, especially to a chemical experiment demonstration device for a students' dormitory. The invention provides a chemical experiment demonstration device, for a students' dormitory, which is simple in structure and convenient to operate. In order to solve the technical problem, the present invention provides a chemical experiment demonstration device, which comprises a bottom plate, a right frame, a top plate, a swing base IV, a disk, a motor I, a dual-rectangular-shaped slide rail, a slide block I, a support rod, an alcohol burner, a fixed bench, a slide block II, a slide rail I, a swing base III, a connecting rod III, a swing base II, a cylinder, a swing base I, a connecting rod II, a connecting rod I, a fixing sleeve, a test tube, a mount, a motor II, a cam, a pressure plate, a spring, a guiding hole, a lifting bar, a lampshade and a test tube plug. Demonstration of a chemical experiment in the dormitory can be achieved, so that students can consolidate the learned chemistry knowledge in time, and learning interest is increased.

The invention relates to a carbon dioxide content determination apparatus. The apparatus comprises a reaction device, the reaction device comprises a reaction bottle, the reaction bottle is provided with a separating funnel having a piston, an alcohol burner is arranged under the reaction bottle, a device for absorbing carbon dioxide in air is arranged in front of the reaction bottle, and an impurity removal device, a carbon dioxide absorbing device and a water absorbing device are sequentially arranged behind the reaction bottle. The apparatus has the advantages of simplicity, easy operation, realization of the assembling completion in most laboratories, and wide application range. The carbon dioxide content result determined through using the apparatus is stable and reliable, and has a good precision and a good accuracy; and simultaneously anhydrous calcium chloride is used to substitute anhydrous magnesium perchlorate, so the measure cost is effectively reduced, and the apparatus is economic and practical.

The invention relates to an experiment demonstration device, and especially relates to a chemical solid-liquid reaction experiment demonstration device. The technical problem to be solved is to provide a chemical solid-liquid reaction experiment demonstration device which is high in automation degree, good in safety and simple in experiment process. In order to solve the above technical problem, the invention provides a chemical solid-liquid reaction experiment demonstration device comprising a base plate, a first support bar, bearing pedestals, a nut, a screw, a second support bar, a first motor, a slide rail, a guide block, a third support bar, an alcohol burner, a heating net, a beaker, a casing, a top board, an electric push rod, a rotating motor, a stirring bar, stirring vanes, a funnel, an electric controllable valve, a second motor, a thumb cylinder, a measuring cylinder and a travel switch. The bearing pedestals are symmetrically arranged on the central part of the top of the base plate, the screw is arranged on the two bearing pedestals, and the nut is arranged on the screw. The chemical solid-liquid reaction experiment demonstration device is high in automation degree, good in safety and simple in experiment process.

The invention discloses a method for preparing a carbon counter electrode in a dye sensitized solar cell. The method comprises the following steps of: preparing a substrate; adding sodium dodecyl sulfate into a transition metal salt solution; coating the prepared solution on the substrate; naturally drying the substrate, and re-coating the solution, wherein the thickness of a dried coating layer is 200 nm to 2 mu m; putting the substrate in a flame of an alcohol lamp; and heating the substrate for 10 seconds to 10 minutes. The method has the advantages that by adding an appropriate amount of sodium dodecyl sulfate into the transition metal salt solution, a one-dimensional composite material has a highly-conductive three-dimensional micro-nano porous structure and is high in catalytic activity and low in series resistance, so the efficiency of the cell is improved. Compared with the conventional cell which employs platinum as a catalyst, the prepared cell has the same energy conversion efficiency and a wide application prospect.

The invention provides a special fireproof paint for a PUF thermal insulation material. The paint comprises modified high chlorinated polyethylene, acrylic resin, 50% of epoxy resin, melamine, pentaerythritol, zinc aluminate, ammonium polyphosphate, chlorinated paraffin, titanium dioxide, a fire retardant, antimonony oxide, organic expansive soil, an antifoaming agent, xylene and butyl acetate. The smoke suppression system employed in the invention has been reported at home and abroad and mainly comprises ammonium polyphosphate, melamine, pentaerythritol and other flame retardant substances. In case of fire, HCL containing chloride reacts with antimonony oxide to form a compact and hard antimony chloride non-combustible protective layer, thereby substantially prolongating the period of resisting burning of the PUF thermal insulation material. According to results of experiments, when PUF having a fireproof paint with a thickness of 2 mm is directly burned with alcohol burner flame at a temperature of 1000 DEG C for 90 minutes, a compact hard flame retardant layer is formed on the surface of the PUF; although 2 cm of the PUF is carbonized, no open flame appears.

A portable, compact, light-weight, foraged-fuel stove which assembled, provides a sturdy adequate cooking surface and while collapsed, forms a compact case favorable in size and weight for easy storage in pocket, purse, or backpack. The low-profile, square shape of this stove enhances stability and safety while providing a multi-use cooking surface adequate for grilling as well as cooking with pans of most sizes. The stove is designed to work with fuels foraged from one's surroundings, but is also suitable for use with charcoal, gelatinous fuels, alcohol burners, and more. By using foraged fuels, the backpacking weight of this stove is minimized. The stove provides a large opening for adding fuel eliminating the need to move the cooking material to add fuel, and a system of smaller openings in the sides of the stove to allow for adequate airflow to sustain combustion of the fuel.

A safety alcohol lamp consists of crown top, lamp wick, ceramic lamp wick seat with hole, alcohol inlet plug, lamp wick film tube, lamp bottle, floating block and internal plug. It features that lamp bottle is sealed by internal plug and lampwick is separated from alcohol part by said file tube as well as opening of said film tube is raised all the time by floating block to let said film tube opening be higher than alcohol level so alcohol can not be flowed out from lamp wick through said film tube although alcohol lamp is fallen down.

The invention relates to a method for manufacturing a mud-rock sample by adopting white oil as a refrigerant. The method is characterized by comprising the steps of (1) drilling a mud rock sample column, namely (a) for mud cock and the mud cock with cracks, using the white oil as the refrigerant, and (b) drilling the mud rock sample column by adopting a common vertical rock sample drilling machine; (2) encapsulating a rock core column, namely (a) taking out the rock core column, putting the rock core column into heated absolute ethyl alcohol, and washing off the white oil on the surface and gaps of the rock core column, (b) sheathing a thermal shrinkable sleeve in time, and (c) baking the rock core column and the thermal shrinkage sleeve on an alcohol lamp simultaneously till the rock core column is tightly fastened by the thermal shrinkable sleeve; and (3) cutting a sample according to the permeability, namely (a) cutting the overlong rock core column of the mud rock and the thermal shrinkable sleeve on an end-surface cutting machine, wherein consistent length and permeability are required. The method has the advantages that the success rate of the sample can be increased, the rock core sample meeting the requirements can be processed, the environment-friendly effect is achieved and the labor efficiency is high.

The invention discloses a clean bench for laboratory department, comprising a box, a glass door, a workbench and a micro operating bench, wherein the glass door is arranged at the front end of the boxthrough a hinge, an air inlet unit is arranged above the box, an inlet air filtering device is arranged above the air inlet unit, an air diffuser cover is arranged outside the rear end of the box, and the interior of the air diffuser cover is provided with a high efficiency filter. The air inlet unit provided by the invention adopts a three-phase motor as a blowing power, and can effectively prevent the air nearby from disturbing and polluting the inside of the box through an inlet air filtering device without hindering burning disinfection of a alcohol lamp or a Bunsen burner and the like oninstruments. In addition, the micro operating bench is set as a rotatable mechanism, so that the laboratory personnel can carry out multi-angle observation on the objects to be tested in more convenient manner. A micro-camera is used to record the testing work in the box in real time, which facilitates the concentration of laboratory personnel, effectively improving the work efficiency.

The invention relates to a method for making mud rock samples. The method is mainly used for solving the problem that existing mud rock is difficult to process a rock core permeability sample. The method is characterized by comprising the following steps: a. drilling a mud rock sample column through a core drilling machine; b. fastening a snap ring with elasticity on the mud rock sample column, fastening the mud core with the mud rock sample column through a bench clamp, cutting the mud core through a hand-held cutting machine until the mud rock sample column drops out; c. removing the snap ring on the mud rock sample column, sleeving a thermal shrinkable sleeve in time, simultaneously roasting the mud rock sample column and the thermal shrinkable sleeve on an alcohol burner until the thermal shrinkable sleeve fastens the mud rock sample column; and d. putting the mud rock sample column and the thermal shrinkable sleeve on an end face cutting machine to cut a 25 mm mud rock sample column to serve as a permeability sample. By adopting the method for making mud rock samples, mud rock samples meeting the requirements can be prepared.

The invention discloses an unsealing method of a metal ceramic packaged crystal oscillator with chip injection molding packaging, belongs to the technical field of unsealing of electronic components, and solves the problems that the integrity of an internal structure cannot be ensured, the unsealing efficiency is low and the like in the prior art. The unsealing method of the metal ceramic packaged crystal oscillator with chip injection molding packaging is characterized in that the crystal oscillator comprises a chip cavity and a wafer cavity, and the wafer cavity is arranged on the chip cavity and is connected with the chip cavity through welding spots; the wafer cavity includes a metal cover plate and a lower cavity, and the wafer is arranged in a space formed by the metal cover plate and the lower cavity; a chip and a bonding wire are arranged in the chip cavity through injection molding packaging; and when the chip cavity is unsealed, the injection molding area of the chip cavity is heated by using the outer flame of an alcohol lamp, and then chemical unsealing is carried out by using a corrosive agent. The method is suitable for unsealing the crystal oscillator.

The invention provides a growth method of rhenium disulfide monocrystal, including: mixing and placing rhenium trisulfide and excessive sulfur powder according to a ratio into a quartz tube, vacuumizing, holding a temperature of 400 DEG C for one to two days, grinding obtained powder, burning on an alcohol burner, and removing redundant sulfur to obtain high-purity rhenium disulfide polycrystal; mixing the obtained desulfurized rhenium disulfide polycrystal with a transport agent bromine, sealing in a quartz tube, vacuumizing, placing in a multi-temperature furnace, and growing rhenium disulfide monocrystal by a chemical gaseous transport method.

The invention relates to a phellinus igniarius strain rejuvenating method. The phellinus igniarius strain rejuvenating method comprises the following steps: selecting a single ganoderma cultivation bag which has the characteristics of typical sporocarp, pure chromaticness, regular mushroom shape and freeness from pest and disease damage in a phellinus igniarius cultivation tent by an intra-compost hypha separation method; wiping the surface of the cultivation bag by a 3 to 5 percent potassium permanganate solution; transferring the cultivation bag into an inoculation hood or an ultra-clean workbench, and removing a bag membrane of 0.5cm<3> from the lower-middle part of the bag with a sterilized dissecting scalpel or a single blade; removing aged hypha from the surface with a disinfected inoculation needle, picking a culture medium carrying hypha of a rice size from the compost, and inoculating an aseptic area of alcohol burner flame into the center of a beveled glass tube; and lastly, cultivating at a dark place at the temperature of 25 DEG C for 2 to 3 days, selecting a test tube without pollution and with robust hypha, picking newly-born hypha under an aseptic condition and inoculating the newly-born hypha to a new beveled culture medium to cultivate the obtained pure mycelium. The phellinus igniarius strain rejuvenating method has the advantages of high hypha growth speed, high resistance, high mushroom mature rate and high yield.

The invention relates to a spraying-type fire preventing and extinguishing material for a coal mine and a preparation method thereof, and belongs to the field of fire preventing and extinguishing materials for the coal mine. The preparation method comprises the steps that 2-6 percent of polyvinyl alcohol, 1-5 percent of phosphoric acid and 1-5 percent of urea react are polymerized in water solvent, then 4-10 percent of triphenyl phosphite and 4-10 percent of white latex are added to continue reaction, and finally 15-25 percent of inorganic aggregate is added and is fully agitated to obtain the product. The inorganic aggregate is one or any combination of talcum powder, kaolin and mica powder. The process is simple when the material provided by the invention is used and the material is directly sprayed onto surfaces of coal blocks through a spraying machine to block passages which leak air; the triphenyl phosphite is highly compatible with the system and the stability of the obtained product is good; and the material has an excellent flame retarding performance and can reach a flame-retardant level that the material cannot be ignited by using an alcohol burner.

The invention provides a simple and convenient separation method for phytophthora parasitica var nicotianae. By the method, a clean working environment is built by using simple equipment and spatial conditions so as to fast separate the phytophthora parasitica var nicotianae. The method particularly comprises the following steps of: (1) selecting and collecting diseased or infected plants; (2) purifying working environment; (3) separating germs; and (4) culturing the germs at room temperature; and the like. Namely, the method comprises the following steps of: building the clean working environment under simple conditions; sterilizing the working environment by the flame of an alcohol burner to form a sterile microenvironment; dissecting diseased or infected stems; picking up disk-shaped diseased or infected medullary slices in the diseased or infected stems with tweezers; placing the medullary slices on oat or lima bean medium plates, wherein the medium plates are sealed by sealing films, and 3 to 5 plates are arranged in a sealed culture box; and culturing the medullary slices for 3 to 5 days at room temperature to obtain target germs by colonial morphology. The method is suitable for field sampling and timely separating, uses simple equipment in the whole operation, and can separate the phytophthora parasitica var nicotianae without microbiology laboratories. The separated germs have high purity and the characteristics of germ wild types.

A manufacturing method of a low-cost echo wall microcavity laser based on erbium-doped microspheres comprises the following steps: pre-blending an erbium trichloride hexahydrate solution; using an alcohol lamp for heating to draw a single-mode optical fiber into a conical optical fiber until the conical optical fiber is broken, immersing the tip of the conical optical fiber in an erbium ion solution for several seconds, and using a fusion splicer for slightly discharging the tip to make the tip of the optical fiber changed into a microsphere through discharging of the fusion splicer due to heating melting and the surface tension effect, wherein water is evaporated due to instantaneous heating, erbium nitrate is crystallized and then is molten into microspheres together with silicon dioxide, and when the electric quantity is proper, erbium ions can be attached to the surfaces of the microspheres; and enabling a tapered optical fiber to be close to the surface of an erbium-doped microsphere, coupling evanescent waves on the surface of the tapered optical fiber into a microcavity to excite an echo wall mode, and enabling a light field and a gain medium to act to generate laser. The manufacturing method of the erbium-doped microsphere micro-cavity laser is simple and convenient to prepare and low in cost, and the manufactured erbium-doped microsphere micro-cavity laser has the characteristics of miniaturization, low threshold value, tunability and the like, and has wide application prospects in the fields of optical communication and sensing.

The invention discloses a volvariella volvacea spore mutagenesis method which comprises the following steps of (1) collecting volvariella volvacea spores; (2) scraping the spores into sterile water bya small sterile knife, performing dilution, and stopping dilution when the spore concentration reaches 10<6> to 10 <8> / mL; (3) before working, firstly starting a cooling water circulation machine, then opening a helium gas valve, enabling the gas input pressure to be between 0.15 MP and 0.2 MP, performing ultraviolet sterilization for 20 min, firing sterilized slide glass for 30s on an alcohol lamp, and putting the fired sterilized slide glass into a sterile empty plate; and (4) taking 1 mL of a spore suspension, adding 143 mL of sterile glycerol with the concentration being 5 percent, performing uniform shaking, recording the liquid as mother liquid, sucking 10 muL of the mother liquid, dripping the mother liquid onto the slide glass in a suspended way, transferring the sterile plate into an ARTP operation room, taking and putting the slide glass onto a corresponding mutagenesis position by a pair of special sterile tweezers, clamping an EP tube containing 1 mL of sterile water underthe mutagenesis position, and performing mutagenesis under the condition of the input power being 100 W, the jet flow being 10 SLW and the irradiation mutagenesis distance being 2 mm. The volvariellavolvacea spore mutagenesis method has the advantages that the back mutation probability caused by passage can be fundamentally reduced.

The invention discloses a test tube heating bracket for traditional Chinese medicine and pharmacy tests. The test tube heating bracket comprises a bottom plate, wherein a plurality of support rods areuniformly fixedly connected with the upper end of the bottom plate; the walls of the support rods are moveably sleeved by sleeves; a plurality of screw holes are formed in the sleeves and walls of the support rods correspondingly; the sleeves are in fastened connection with the support rods through bolts; two connecting rods are fixedly connected with the outer wall of each sleeve symmetrically;positioning cylinders are fixedly connected with ends far away from the sleeves, of the connecting rods; through holes are formed in the walls of the positioning cylinders; T-shaped pull rods are sleeved by the through holes through guide bearings; arc-shaped clamping plates are fixedly connected with ends inside the positioning cylinders, of the pull rods; a plurality of return springs are fixedly connected between the outer side walls of the arc-shaped clamping plates and the inner walls of the positioning cylinders; a plurality of alcohol burners for heating test tubes are fixedly arrangedat the upper end of the bottom plate; a protection cover is connected with one side of the upper end of the bottom plate through hinges. The test tube heating bracket facilitates stably clamping of test tubes of different diameter sizes and is wide in application range, and the labor can be saved.

The invention discloses a method for extracting tissue RNA by tissue grinding, and belongs to the technical field of molecular biology. The method comprises the following steps: (1) burning the tip of an RNA enzyme-free disposable plastic pipette head with flame of an alcohol lamp to soften the tip to form a round bump; (2) putting a tissue for extracting RNA into an RNA enzyme-free disposable plastic EP pipe; and (3) grinding the pipette head prepared in the step (1) in the EP pipe in the step (2). According to the method for extracting tissue RNA by tissue grinding, a burnt RNA enzyme-free disposable plastic pipette head is adopted to grind a tissue with the RNA enzyme-free disposable plastic EP pipe. Compared with a traditional glass or ceramic homogenizer, the method has the advantages that the RNA extraction operation is more time-saving, simple and convenient, materials are wide in source, and the cost is relatively low. The grinding pipette head has a relatively small size, is especially suitable for extracting RNA of micro-tissues, and can be used for grinding sufficiently, so that the RNA yield and quality can be improved.

The invention discloses a disposable specimen collecting and inoculating device. The disposable specimen collecting and inoculating device comprises a collecting container and a sealing cover used for sealing the container, wherein an inner sleeve is fixed in the center of the inner side surface of the sealing cover; the bottom of the inner sleeve is fixed with an inoculating ring and a cotton swab capable of moving up and down in the sleeve; a limiting bracket for limiting position of the cotton swab is arranged on the tail part of the cotton swab; a clamping ring which is matched with the limiting bracket and plays a position limiting role is arranged on the inner wall of the hollow tube; the tail end of the limiting bracket is connected with a traction wire which is used for pulling the limiting bracket to cross the limiting ring for enabling the cotton swab to be retracted into the hollow tube; after penetrating through the sealing cover, the traction wire is connected with a pulling ring used for traction operation. According to the disposable specimen collecting and inoculating device disclosed by the invention, the specimen collecting, inoculating and drawing are completed by one step, and the disposable specimen collecting and inoculating device is discarded after being used, so that a process of heating the inoculating ring on an alcohol lamp till red to realize sterilizing is cancelled, and therefore, not only is crossed pollution avoided, but also time is saved and working efficiency is improved.

The invention discloses an anti-knock-down iron stand for high school physics experiment teaching. The anti-knock-down iron stand comprises a bottom plate, wherein a vertical rod is arranged at one end of the surface of the bottom plate, a sliding sleeve is arranged on the vertical rod, a first supporting rod and a second supporting rod are respectively arranged on the two sides of the sliding sleeve, an iron ring is arranged at the top end of the first supporting rod, fixing rods are arranged on the two sides of the iron ring, a protection frame is arranged on the fixing rod, a protection plate is arranged on the surface of the bottom plate, sliding grooves are formed in the two sides of the inner wall of the protection plate, sliding strips are arranged at the two ends of a drawing plate, and are embedded in the sliding grooves, a placing plate is arranged at the upper end of the drawing plate, a supporting leg is arranged at the bottom end of the drawing plate, an opening for makingthe supporting leg move is formed in the bottom plate, an adjusting button for adjusting a plug pin is arranged on one side outside the opening, and a base is arranged at the bottom end of the bottomplate. According to the invention, with the anti-knock-down iron stand, an alcohol lamp can be placed conveniently, and is placed stably and is not likely to be touched, and a to-be-heated heating instrument can be replaced rapidly, so the use is convenient.

The invention relates to the technical field of organic matter processing and further discloses a purification and separation method and a separation device of N-acetyl-D-glucosamine. The device comprises a distillation plate; the upper surface of the distillation plate is fixedly connected with straight columns; an alcohol lamp body is arranged above the straight column; a flask body and a woodenbottle plug are arranged above the alcohol lamp body; a fixing mechanism for supporting the wooden bottle plug is arranged outside the straight column; a circular plate is held and rotated anticlockwise, and then the circular plate drives a rotating shaft to rotate anticlockwise; meanwhile, the wooden bottle plug is separated from the inner part of the flask body; a transmission crawler belt drives the upper-layer meshing plate to enable the lower-layer meshing plate to synchronously move downwards; the lower-layer meshing plate drives threaded grooves to rotate in a threaded mode while moving downwards; two rotating rods can rotate inwards along the two threaded grooves while the movable rod rotates, and two lantern ring plates are driven to be opened, so that a user can conveniently take and use the flask body, the user can quickly take the flask for operation, and the working efficiency of the user is improved.

The invention relates to a water bath heating device which comprises a tripod, a lifting bench and a beaker, wherein the tripod is matched with the lifting bench, and the beaker is arranged in the lifting bench. The water bath heating device is characterized in that an internal thread is arranged on the inner side of an iron ring of the tripod, an external thread is arranged on the outer side of the lifting bench, the external thread of the lifting bench is matched with the internal thread of the tripod, the lifting bench is provided with a handle, a thermometer is embedded into the beaker, the beaker and the thermometer are both made of a transparent glass material, and temperature scales are marked on the beaker. In a process that an alcohol burner heats water bath, temperature of the water bath can be known in real time; if the temperature is higher than requirement, the lifting bench can be rotated to enable the water bath to rise and be away from flame to be cooled; if the temperature is lower than requirement, the lifting bench can be rotated to enable the water bath to descend and be close to flame to be warmed; finally, the water bath is adjusted to the required temperature. The water bath heating device has the advantages of effectively adjusting water bath heating temperature and being simple in structure, low in construction cost and convenient to popularize.

The invention relates to the field of alcohol separation, specifically to a rapid separation device for an alcohol mixed solution. The rapid separation device comprises an iron stand, a sliding mechanism, a telescopic mechanism, a plug, a flask, an asbestos net, a control mechanism, an alcohol lamp and a moving mechanism, wherein the control mechanism is fixedly arranged at the asbestos net and arranged between the asbestos net and the alcohol lamp; the size of flame, making contact with the asbestos net, of the alcohol lamp is adjusted by adjusting of a gap in the middle of the control mechanism, so a mixed solution in the flask is heated conveniently, and the temperature of the mixed solution in the flask is adjusted and controlled easily; the telescopic mechanism is fixedly arranged atthe sliding mechanism; the moving mechanism is installed on the iron stand; and the movement of the moving mechanism is controlled through the telescopic mechanism, and the alcohol lamp reciprocates to move back and forth, so uniform heating of a mixture in the flask is facilitated, and control over the temperature of the mixture in the flask is facilitated.