139 results about "Erlenmeyer flask" patented technology

The invention discloses an extraction method of rose flavonoids, which comprises the following steps: S1, crushing selected dry Hetian rose buds, and storing for later use; s2, accurately weighing 1g of rose powder and putting the rose powder into a conical flask; s3, then, according to the material-liquid ratio of 1: 40, 40% ethanol is used as a solvent, and the materials are poured into a conical flask to be mixed; and S4, finally, soaking in a constant-temperature water area, extracting for 2 hours, and finally, taking supernate for later use. According to the invention, the solid-liquid ratio of 1: 40 ensures that the rose powder is fully infiltrated by an enough solvent (40% ethanol). Under the proportion, the ethanol can be in full contact with target components (such as flavonoid compounds and the like) in the rose powder. Each 1g of rose powder is surrounded by 40ml of solvent, so that target components have more opportunities to be dissolved out of powder particles to enter the solvent, and the extraction completeness can be improved compared with the condition that a feed liquid is relatively small.

A culture medium unsealing and transferring device relates to the field of container unsealing and comprises a moving plate, a supporting plate, a rotating plate, a rotating shaft and a rotating shaft, the unsealing mechanism is arranged on the supporting plate and comprises a moving frame moving in the length direction of the unsealing mechanism, a vertically-moving pressing plate is arranged on the inner side of the moving frame, a plurality of clamping rings are arranged on the pressing plate, a vertically-moving supporting frame is arranged above the pressing plate, a plurality of pressing blocks are arranged on the supporting frame, mucilage glue is arranged at the bottoms of the pressing blocks, and a plurality of hooks are arranged on the peripheral sides of the pressing blocks; the clamping mechanism is arranged at one end of the supporting plate and comprises a bearing frame which moves vertically and rotates around one side of the bearing frame, and a plurality of clamping rods are arranged on the bearing frame; the transfer mechanism is arranged at the other end of the supporting plate and comprises a rotating frame which is movably arranged in the length direction and the vertical direction of the rotating frame, a plurality of clamping blocks are arranged on the rotating frame in the length direction of the rotating frame and used for clamping the conical flasks, and the rotating frame rotates along the connecting line of the centers of the clamping blocks. According to the device, the conical flasks can be unsealed in batches, culture media in the conical flasks can be transferred, efficiency is improved, and the requirement for large-batch operation is met.

The invention relates to a mercury content detection method, and relates to the technical field of mercury detection. According to the mercury content detection method, the to-be-detected sample is preliminarily quantified by using the X-ray spectrometer, the mercury content range of the to-be-detected sample can be quickly obtained, the to-be-detected sample is weighed according to the preliminarily measured mercury content, and the accuracy and reliability of subsequent detection can be guaranteed. By means of constant-temperature water bath heating, it can be guaranteed that a sample to be detected is completely decomposed, meanwhile, a solution in the cover type funnel is poured back into the conical flask, mercury compounds volatilized after heating can be collected, mercury content loss is avoided, and the stability and accuracy of subsequent detection results are further guaranteed. The mercury standard solution is prepared, the inductively coupled plasma emission spectrometer is used for detection, manual titration operation is not needed, the anti-interference capability is good, the mercury content can be accurately measured, and the stability and accuracy of a detection result are effectively guaranteed.

The utility model discloses a COD (Chemical Oxygen Demand) digestion device, relates to the technical field of water quality detection instruments, and solves the problems that when the existing COD digestion device is not used, a conical flask and a return pipe are usually directly placed on the COD digestion device, no protective device is arranged outside the conical flask and the return pipe, and external dust directly falls on the device when the conical flask and the return pipe are placed for a long time, so that the subsequent use is influenced. According to the technical scheme, the problems that a conical flask, a backflow pipe and other glassware are damaged due to the fact that the conical flask and the backflow pipe are easily touched by mistake, and using is inconvenient are solved, the device comprises a groove body, two L-shaped supports and a main machine body, the two symmetrical L-shaped supports are fixedly installed on the upper surface of the rear side of the groove body, and the bottom of the main machine body is fixedly connected with the top planes of the L-shaped supports. According to the utility model, through the matching design of the two L-shaped protective plates and the back plate, the conical flask and the return pipe in the COD digester are sealed and shielded, so that external dust is not easy to directly fall on the conical flask and the return pipe, and the follow-up use is facilitated.

The invention discloses a method for carrying out nine-fold breeding by utilizing female gametes, and relates to the technical field of biological breeding. Comprising the following steps: step 1, pollinating hexaploid persimmon pollen to a'rattan royal house 'containing 2n eggs; 2, collecting young fruits which are born for 65-70 days after pollination, stripping seeds, putting the seeds into a sterilized triangular flask, treating the seeds for 30 seconds in an ultra-clean workbench by using 70% ethanol, pouring out the seeds, adding a 1% NaClO solution, soaking the seeds for 10 minutes, and shaking the seeds once every 3-4 minutes. According to the method for carrying out nine-fold breeding by utilizing female gametes, in persimmon breeding, compared with a 2n pollen path, the 2n egg path is higher in feasibility, 2n eggs and complete male germplasm with good pollen traits are hybridized, pollination populations are expanded, and polyploidy seedless materials can be obtained.

The invention discloses a rapid detection and on-site treatment method for ammonia and black oil in fly ash, which comprises the following steps: 1) weighing 200g of fly ash from the batch of fly ash, putting the fly ash into a conical flask, adding 80g-90g of water for stirring, and stirring; (2) after stirring is completed, covering a conical bottle opening with test paper soaked with a 1% phenolphthalein alcohol solution; 3) if the test paper turns red, determining that ammonia with relatively high content exists; 4) standing for 8-10 minutes, and observing whether black oil exists on the surface of the neat paste; 5) after the detection is completed, treating excessive ammonia and black oil in the fly ash; according to the present invention, the ammonia content is rapidly detected by using the test paper impregnated with the 1% phenolphthalein alcohol solution, the black oil is observed by standing, and the concrete stirring and vibrating process is combined so as to achieve the real-time determination and the emergency treatment of the fly ash pollutants, such that the concrete structure quality is improved, and the fly ash field detection method is supplemented.

The utility model relates to the technical field of physical and chemical inspection, and discloses a titration assembly for physical and chemical inspection, which comprises a base, mounting plates are fixedly connected to the left side and the right side of the upper part of the base, a mounting groove is formed in the middle of the base, chutes are formed in the lower parts of the opposite sides of the mounting plates, and stirring assemblies are arranged in the chutes. And the upper parts of the opposite sides of the mounting plates are fixedly connected with electric telescopic rods, and the opposite sides of the electric telescopic rods are provided with mounting assemblies for mounting the titration assemblies. According to the titration assembly, through the cooperation of the valve, the burette, the conical flask, the magnetic stirring device, the magnetic stirring rotor, the air cylinder, the supporting plate and other structures, liquid medicine and titration liquid can be fully stirred when the titration assembly is used for detecting the phlegm reducing liquid medicine, and the accuracy of detecting the phlegm reducing liquid medicine is improved.

The utility model provides a novel funnel type body fluid sample bottle for collecting and storing body fluid samples, which comprises a bottle body, the top of the bottle body is in threaded connection with a wide-mouth bottle cap, the bottle body comprises a cylindrical bottle body and a conical bottle body, the cylindrical bottle body is connected with the conical bottle body, the cylindrical bottle body is positioned above the conical bottle body, and the conical bottle body is positioned above the conical bottle body. The bottom of the conical flask body is connected with a return pipeline, an annular protrusion is arranged on the inner side of the lower portion of the cylindrical flask body, a supporting frame is arranged below the cylindrical flask body, and the supporting frame is connected or connected to the outer side of the conical flask body in a sleeved mode. The novel funnel-type body fluid sample bottle for collecting and storing the body fluid sample is simple in structure, the wide-mouth bottle above the bottle body is used for collecting body fluid, the lower portion of the bottle body is funnel-shaped, deposition and centrifugation of visible components are facilitated, the bottom of the conical bottle body is connected with the sample outlet through a return pipeline and is controllable and normally closed, operation is simplified, and the bottle is convenient to use. The opportunity that an operator is in contact with the contents to pollute the contents can be avoided, and the concentration of liquid particle components at the lower part is improved.

This invention discloses an extremely salt-tolerant halophilic bacterium, HD16, which can grow under extreme salinity conditions up to 4.0 M sodium chloride (approximately 230 g / L sodium chloride) and also exhibits high alkalinity tolerance, surviving at pH 7–11. Therefore, it is predicted to have broad application prospects in wastewater treatment and other fields. Furthermore, it can be used to produce polyhydroxyalkali (PHA). When cultured in a 500 ml Erlenmeyer flask, the cell dry weight yield reaches 9.45 g / L, with PHA accounting for 72.97% of the bacterial dry weight. The extreme salt tolerance and high alkalinity tolerance of this strain enable it to efficiently accumulate polyhydroxyalkali esters under open, non-sterile conditions.

The utility model relates to the field of malt physicochemical index detection, and discloses a distillation extraction device for detecting peat phenol value in peat malt, which comprises a support II, a support I and an electric jacket, the outer side of the support II is fixedly connected with a bottom support, the middle part of the bottom support is provided with a condenser pipe, the inside of the condenser pipe is fixedly connected with a coiled pipe, and the coiled pipe is fixedly connected with the support I; a distiller is installed on the outer side of the first support through a chain clamp, a distiller cover is installed on the top of the distiller, a water outlet and a water inlet are sequentially and fixedly connected to the outer side of the condensation pipe from top to bottom, and a conical flask is arranged under the coiled pipe. According to the utility model, the technical scheme of a distillation condensation mode is adopted, so that total phenols in malt can be continuously and uniformly collected. According to the scheme, the whole collection process does not exceed 20 minutes, and the distillation water can be continuously supplemented, so that the efficiency is greatly improved. Compared with the problems of low collection efficiency and complex operation in the prior art, the scheme greatly simplifies the experimental process and improves the overall working efficiency.

The utility model provides a titration device for medicine detection, which belongs to the technical field of titration detection and comprises a clamping mechanism arranged in an inner cavity of a base, a pull rope fixedly connected to one end of a pull rod, a winding disc arranged at the other end of the pull rope, a first bevel gear fixedly connected to the bottom of the winding disc, and a support shaft fixedly mounted at the bottom of the first bevel gear, the torsional spring and the first bevel gear are arranged on the outer surface of the supporting shaft in a sleeving mode, the supporting shaft rotates, the first bevel gear drives the second bevel gear, the rotating shaft and the spiral guide roller which are meshed with the first bevel gear to rotate, and the first bevel gear moves left and right on the surface of the spiral guide roller along with rotation of the spiral guide roller to drive the clamping rod to clamp the conical flask. According to the utility model, the conical flask can be effectively clamped and fixed through the matching of all parts between the clamping mechanisms, and the problems that the conical flask is easy to turn over or slide down due to the fact that the conical flask cannot be fixed during titration in the prior art, so that personnel need to prepare materials again, time and energy are wasted, and the working efficiency is delayed are solved.

The invention relates to a method for detecting the content of white oil in polystyrene, which is applied to the field of polystyrene resin detection and comprises the following steps: S1, weighing a polystyrene sample, putting the polystyrene sample into a conical flask with a plug, adding methylbenzene into the conical flask with the plug, and oscillating and dissolving; s2, putting the conical flask with the stopper into a warm water bath, and meanwhile, adding a precipitator into the conical flask with the stopper to precipitate a polymer; s3, adding a precipitant while shaking when the precipitant is dropwise added, and quickly cooling after the precipitant is completely precipitated; s4, filtering by using suction filtration equipment, collecting the filtered solution, concentrating to obtain a concentrated sample solution, and weighing the concentrated sample solution; and S5, sucking a proper amount of concentrated sample liquid by using a microsyringe, then injecting the concentrated sample liquid into a chromatographic instrument, and determining, by accurately controlling precipitation conditions and a separation process, the problems of white oil wrapping by precipitation, filter membrane blockage and insufficient detection limit in a traditional method are solved, and high-precision and high-repeatability white oil content detection is realized.

The utility model relates to an improved nitrogen distillate absorption device, which comprises a distillation flask, a splash-proof ball tube, a guide tube, a condensing tube and a conical flask with double connecting balls which are connected in sequence, and a dropping funnel is arranged between the distillation flask and the splash-proof ball tube, and is characterized in that the distillation flask is provided with a temperature control device, the guide tube is U-shaped, and the condensing tube is arranged in the conical flask. The conical flask with the double connecting balls is connected to the lower end of the condenser pipe, and the opening of the conical flask with the double connecting balls is S-shaped. The gas absorption and titration device is simple, clear and accurate, and solves the problems that in the prior art, the heating temperature is too high, the temperature control is unstable, and the heating is not uniform; the gas flow speed is too high, so that the absorption is incomplete; the solution absorbed by the conical flask is easy to splash out, and system errors are easy to generate, so that the test is accurate.

A cooking disinfection frame comprises a base plate, a plurality of supporting legs are arranged on the base plate, a plurality of air holes are formed in the base plate, the supporting legs serve as supporting parts, the lower ends of the supporting legs are placed at the lower end of a cooking pot, and the air holes can enable water vapor to penetrate through and disinfect appliances. A plurality of vertically arranged vertical rods are arranged on the base plate, connecting rods are arranged at the upper ends of the vertical rods, the connecting rod located at the lower end is connected to the lower end of the vertical rod located at the upper end, a plurality of outward extending rods are arranged on the vertical rods, a plurality of vertical rods are arranged on the outward extending rods, and when appliances such as beakers and conical flasks are placed, the vertical rods can be arranged in the appliances in a penetrating mode. The vertical rods are used for supporting the appliances, and the openings of the placed appliances face downwards, so that steam can conveniently enter the appliances, and the inner walls of the appliances can be conveniently disinfected. Meanwhile, after being placed, the appliances are arranged at intervals, so that the appliances are prevented from being damaged during transferring.

The invention provides a traditional Chinese medicine extract detection method, and relates to the field of extract detection. Comprising the following steps: S1, precisely weighing M1 g of a test sample, and adding the test sample into a conical flask; s2, adding 100 mL of an ethanol solution into the conical flask, and sealing the conical flask opening; s3, preliminarily shaking up the solution system in the conical flask, then fixing the conical flask on an oscillator, setting the oscillation time to be 6 hours and the frequency to be 120 Hz, and then standing for 18 hours; s4, filtering the solution system in the conical flask, and precisely measuring 20mL of filtrate; s5, drying the evaporation dish to constant weight, weighing the weight of the evaporation dish, and recording the weight as M4; adding the filtrate weighed in the step S3 into a dry evaporation dish, drying to constant weight, and recording as M5; and S6, calculating the content of the extract in the test sample. According to the detection method, the cost of inspection personnel is effectively reduced, the inspection efficiency is improved, personnel errors can be effectively reduced, and the time utilization rate of inspection is improved.

The invention discloses a method for detecting Fe < 2 + > and Fe < 3 + > in a zinc plating solution, which comprises the following steps: putting a zinc plating solution test solution into a conical flask, then adding hydrochloric acid and a copper sulfate solution, heating, taking down and slightly cooling to obtain a test solution; adding an isatin indicator into the test solution, uniformly shaking, then dropwise adding a titanium trichloride solution until the test solution becomes yellow from blue green, adding excessive titanium trichloride solution after the test solution is stable, adding distilled water, cooling, standing, adding sulfuric acid-phosphoric acid mixed acid after the test solution is obviously blue, then dropwise adding a sodium diphenylaminesulfonate indicator solution, and uniformly shaking; titrating with a potassium dichromate standard titration solution until the test solution is purple, and calculating to obtain the total iron content; and measuring the content of Fe < 2 + >, and calculating the concentration component of Fe < 3 + > according to the total iron content and the concentration component of Fe < 2 + >. The concentration of Fe < 2 + > and Fe < 3 + > can be monitored in real time, anode passivation is prevented, the production quality is controlled, the operation is convenient, the test time is short, and the accuracy of an analysis result is high.

The utility model discloses a conical flask for water quality inspection, which comprises a base, a first heating assembly, a second heating assembly and a conical flask body, and the first heating assembly is arranged on the base and is used for heating the bottom of the conical flask body; the second heating assembly is detachably arranged on the base and used for heating the outer side wall of the conical flask body, and a heat preservation area used for preserving heat of the conical flask body is formed between the second heating assembly and the base; and a turbulent flow bulge is inwards formed on the inner side wall of the conical flask body. The conical flask for water quality inspection is reasonable in structure, high in mixing efficiency, high in heating efficiency and stable in heating temperature.

1. The name of the design product: conical bottle. 2. The use of the design product: bottle for carrying drinking water outside. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

This invention discloses a method for detecting hydrogen deuteride after water-hydrogen isotope liquid-phase catalytic exchange. The apparatus used in this method includes a first Erlenmeyer flask, a metering pump, a catalytic exchange bed, a flow meter, and a time-of-flight mass spectrometer. The detection process is as follows: a mixture of heavy water and purified water is filled into the first Erlenmeyer flask; a hydrophobic catalyst and hydrophilic filler for the isotope exchange reaction are filled into the catalytic exchange bed; the mixed water enters the catalytic exchange bed from the top and undergoes an isotope exchange reaction with hydrogen gas entering from the bottom of the bed; the deuteride gas after the exchange reaction is directly introduced into the time-of-flight mass spectrometer for detection via the flow meter. This method can monitor the changing trend of deuteride gas after water-hydrogen isotope liquid-phase catalytic exchange online. Simultaneously, the performance of the catalyst, the packing ratio, and the packing method can be examined, thereby further guiding the process. This method features fast analysis speed and high sensitivity.

The utility model discloses an H2S precipitation test device capable of detecting pH-electrode potential on line. The H2S precipitation test device comprises a sulfuric acid dropwise adding system; a sulfuric acid adding port of the H2S gas preparation system is connected with the sulfuric acid dropwise adding system; a gas input port of the H2S precipitation system is connected with a gas output port of the H2S gas preparation system; the residual H2S absorption system is connected with a tail gas outlet of the H2S precipitation system; the device further comprises a pH-electrode potential detection system. The pH-electrode potential detection system comprises a second peristaltic pump, and the inlet end of the second peristaltic pump is connected with a guide pipe arranged in the H2S precipitation system; a guide pipe in the third conical flask is connected with the outlet end of the second peristaltic pump; and the detection end of the pH-electrode potentiometer is arranged in the third conical flask.

The invention discloses a pretreatment method for detecting an active substance epicafucatechin in radix ephedrae formula granules. The pretreatment method comprises the following steps: (1) crushing and sieving the radix ephedrae formula granules, and collecting screen underflow; (2) putting a proper amount of crushed ephedra root formula granules into a conical flask with a plug, adding ultrapure water, performing ultrasonic extraction in an ultrasonic machine, standing to room temperature, adding water to complement the weight, and filtering to obtain a filtrate; (3) extracting a proper amount of filtrate with water-saturated n-butyl alcohol, and combining extract liquor; and (4) evaporating the n-butyl alcohol extract to dryness, dissolving residues with methanol, metering the volume in a 10mL volumetric flask, and filtering to obtain a sample to be detected. The method can effectively guarantee the detection stability and accuracy of the active substance epialfallocatechin in the Chinese ephedra root formula granules.

The utility model relates to an EDTA titration detection device, and relates to the technical field of cement content detection.The EDTA titration detection device comprises a base, a titration assembly and a control assembly, the titration assembly comprises a conical flask and a burette, and the conical flask is arranged on the base; the burette is detachably connected to the base and is positioned above the opening end of the conical flask; a piston is arranged on the burette; the control assembly is arranged on the piston and is used for controlling the titration amount of the burette. The method has the effect of improving the accuracy of the detection result.

A method for the microwave preparation of nano-nickel through chemical reduction in an alkaline environment is disclosed. This invention addresses the problems of complex processes and high energy consumption in existing nano-nickel preparation methods. The steps of this invention include: Step 1, preparing an alkaline solution; placing an ammonia solution in a conical flask and adding a magnetic stirrer; Step 2, adding a nickel salt; adding the nickel salt to the conical flask and stirring until completely dissolved; Step 3, adding a reducing agent; adding the reducing agent to the conical flask and stirring evenly; Step 4, conducting a microwave reaction; placing the conical flask in a microwave reactor for the microwave reaction; Step 5, after the reaction is complete, removing the conical flask, separating the precipitate, washing, and drying to obtain nano-nickel powder. This invention belongs to the field of nanomaterial preparation technology.

The invention discloses a method for determining salinity in coastal saline soil by adopting an ultrasonic extraction method. The method comprises the following steps: (1) determining optimal extraction parameters through experiments; (2) weighing the air-dried coastal salinized soil which is quantitatively sieved, putting the air-dried coastal salinized soil into a conical flask, and adding distilled water into the conical flask according to a water-soil mass ratio; (3) sealing the conical flask, and performing ultrasonic extraction treatment; (4) sucking 40 ml of the turbid liquid from the conical flask into a centrifugal tube, setting centrifugal parameters, and carrying out centrifugal treatment to prepare a clarified leaching solution; (5) accurately measuring an upper-layer clarified leaching solution from the centrifugal tube, evaporating the upper-layer clarified leaching solution to dryness in a ceramic evaporation dish, and continuously drying in a drying oven until the weight is constant; and (6) calculating the salt content in the coastal saline soil according to the mass of the dried residual solid. The method provided by the invention solves the problems of insufficient extraction and low separation efficiency of salt in the coastal salinized soil in a traditional method, and can rapidly and accurately measure the salt content in the coastal salinized soil.

The utility model provides a kind of titration device for drug research and development, it is related to the field of pharmaceutical processing equipment, it includes: bottom plate, bottom plate top is used to place conical flask;Stand, bottom plate top is equipped with stand, stand one side is equipped with mounting ring, for the clamping fixation of burette;Clamping assembly, clamping assembly is equipped on the inner wall of mounting ring, for the clamping fixation of burette;And mixing assembly, mixing assembly is equipped on the top of bottom plate, for the mixing of conical flask.This kind of device cooperates through the synergistic effect of clamping assembly, realizes the real-time posture fine adjustment and self-adaptive clamping of burette, adjusts motor based on gyroscope feedback data dynamic control mounting ring angle, offset caused by compensating external force disturbance, ensure that burette is always in vertical equilibrium state;The integrated design of mixing assembly in combination with antiskid component improves the mixing efficiency and fixed safety of reaction vessel.

The present application relates to the technical fields of anaerobic biological toxicity experiment, and discloses an automatic sample feeding device for industrial wastewater anaerobic biological toxicity evaluation, which comprises a conical flask for temporarily storing anaerobic sludge samples and nutrient solution, and further comprises: a storage box, which is internally provided with a storage space for storing anaerobic sludge samples and nutrient solution; a gas storage tank, which is arranged on the side surface of the storage box and internally filled with high-pressure nitrogen; a nitrogen gas conveying assembly, which is arranged on the gas storage tank and penetrates and extends to the inside of the storage box, and is used for aerating the anaerobic sludge samples in the storage box and realizing sludge homogenization through stirring; and a sample feeding assembly, which is arranged on the storage box and communicates with the storage box, wherein the sample feeding assembly is provided with two sample feeding assemblies for respectively feeding anaerobic sludge samples and nutrient solution into the conical flask. The automatic sample feeding device and method for industrial wastewater anaerobic biological toxicity evaluation aim to simplify the exhaust process, reduce the contact between microorganisms and air, and improve the experimental efficiency and result accuracy.

The device comprises a conical flask and a glass straight-through tube, the lower end of the glass straight-through tube extends into the conical flask, and the upper end of the glass straight-through tube is connected to a conical flask opening through a test tube buckle and a latex plug. The invention also discloses a method for measuring the paraffin removal rate of microorganisms and bacterial liquid, which comprises the following steps: introducing the glass straight-through pipe into a molten wax sample or high-wax-content crude oil, slowly rotating, taking out the glass straight-through pipe after the paraffin or high-wax-content crude oil completely wraps the liquid-immersed straight-through pipe, repeating the operation for 3-5 times to simulate a wax precipitation oil pipe in a shaft, and aging and weighing the treated straight-through pipe; preparing a fermentation culture medium, introducing a straight-through pipe into the fermented culture medium, carrying out shaking table culture, lightly washing a mycoderm adhered to the straight-through pipe with water, placing, and weighing after the surface is dried; and finally, the paraffin removal rate is calculated through weighing data. By accurately calculating the paraffin removal rate, the use of the paraffin remover can be effectively evaluated and optimized, so that the paraffin precipitation phenomenon of an oil well is reduced. This helps to improve the production and production efficiency of an oil well.

The utility model discloses distillation equipment for measuring free ammonia and fixed ammonia, and relates to the field of distillation measurement. Distillation equipment for measuring free ammonia and fixed ammonia comprises a water bath electric pot, a distillation flask, a communicating pipe, a condensation pipe, a conical flask and an iron stand, the distillation flask and the condensation pipe are installed on a supporting rod on the iron stand through fixing clamps, and the distillation flask is located in the water bath electric pot; in the whole measuring process of free ammonia and fixed ammonia, through the arrangement of the sealing heat preservation cover, the rapid diffusion of water vapor generated by heated water can be effectively inhibited, and heat is more intensively acted on the distillation flask, so that the heat loss is reduced, the temperature rise of liquid in the distillation flask is quicker, and the boiling is quicker, thereby accelerating the distillation speed; compared with a non-sealed heat preservation device, the single distillation time can be greatly shortened, the overall detection efficiency can be remarkably improved when free ammonia and fixed ammonia are measured, and an experimenter can complete detection of multiple samples within shorter time.

The invention discloses a method for rapidly quantifying toluene insoluble substances in asphalt, which comprises the following steps: S1, placing an asphalt sample in a conical flask of a sample dissolving system, and adding normal-temperature toluene; s2, mounting a condenser pipe on a conical flask, opening a cooling water valve, placing the conical flask on a heating table, starting stirring and heating, and refluxing and dissolving the asphalt sample for 30-60 minutes after the temperature reaches a set temperature; s3, suction filtration: pouring the dissolved asphalt sample into a sand core funnel of a suction filtration system, carrying out suction filtration while the sample is hot, washing a conical flask with toluene at 50-60 DEG C, and pouring the washed conical flask into the sand core funnel of the suction filtration system; and S4, after suction filtration is finished, drying the sand core funnel, cooling, weighing, and calculating the content of the toluene insoluble substances in the asphalt. The method solves the problems that the traditional method for quantifying the content of toluene insoluble (TI) consumes long time, is poor in operation flexibility and cannot accurately quantify the content of TI in the ultrahigh softening point asphalt.

The utility model discloses a reflux digestion instrument, relates to detection equipment technical field, including support, conical flask, condenser pipe and rotary heating device, the rotary heating device includes rotary base, heating unit and bearing frame, the rotary base is rotatingly connected with the lower end of the support around the vertical axis, the heating unit is equipped with the bearing frame, and the bearing frame is equipped with the conical flask. A plurality of heating units are arranged on the rotating base in the circumferential direction, one conical flask is placed above each heating unit, one condensation pipe is connected to each conical flask, the bearing frame is fixed to the rotating base, and the bearing frame is fixed to the rotating base. The outer side of the upper end of the bearing frame is provided with bearing cavities used for bearing the condensation pipes in the circumferential direction, and the sides, away from the center of the bearing frame, of the bearing cavities are provided with taking and placing notches. The reflux digestion instrument provided by the utility model can reduce energy loss, meets the requirements of energy conservation and emission reduction, is uniform in heating, is convenient to observe, and is convenient for taking and placing the condenser pipe.