42 results about "Soxhlet extractor" patented technology

The invention belongs to the technical field of photocatalysts, provides a structure, a preparation method and application of four novel organic polymer materials, and particularly relates to a preparation method and application of a perylene covalent triazine framework material. The preparation method mainly comprises the following steps: firstly, mixing monomers containing different functional groups and structures in different solvents, and synthesizing a polymer material through simple Sonogashira coupling reaction and Suzuki coupling reaction; secondly, performing Soxhlet extraction and purification on the four materials in a Soxhlet extractor to wash off impurities and unreacted monomers; according to the novel organic polymer material, triazine rings are introduced and form a more stable and prolonged D-A structure with pyrene and perylene functional group parts, intramolecular electron transfer of photon-generated carriers is promoted, compounding of the photon-generated carriers can be inhibited, and then the performance of the obtained material for photocatalytic water production of hydrogen peroxide is improved; meanwhile, the influence of introduction of different units on the performance of photocatalytic water production of hydrogen peroxide is compared.

A system for plant-mediated synthesis and characterization of vanadium pentoxide (V2O5) nanoparticles, comprising a structurally integrated device configured to perform extraction, reaction, calcination and performance evaluation within a closed automated control loop, wherein the system includes: a basic chassis made of heat-insulated stainless steel, which houses a microcontroller-based central control unit; a bioextract preparation unit fluidically connected to a reactive mixing chamber, the bioextract preparation unit comprising a Soxhlet extractor with a borosilicate condenser, a thermostatically controlled heating jacket and a digital thermocouple to maintain extraction temperatures between 60°C and 70°C; a precursor feed vessel containing an ammonium metavanadate solution with a molarity between 0.1 M and 0.3 M, wherein this vessel is connected to the reaction mixing chamber via an electromagnetically actuated inlet valve and a precision peristaltic pump; a reaction mixing chamber with an inductive heating coil, a magnetic stirrer plate and a temperature and pH monitoring device configured to maintain a uniform reaction temperature of 70±2°C during the precursor-extract interaction; a calcination module consisting of a muffle furnace lined with refractory ceramic material and containing embedded nichrome heating elements controlled by a PID-controlled temperature controller to achieve a heating rate between 5 °C and 10 °C per minute up to a setpoint of 445±5 °C for combustion synthesis; an optical characterization module with integrated UV-VIS spectrometer, Fourier transform infrared analyzer and photoluminescence detector, each optically isolated and electronically connected to the control unit; and a photocatalytic and antibacterial test chamber fluidically connected to the output of the calcination module, the chamber comprising a UV irradiation array, an optical absorption sensor and a temperature-controlled bacterial incubation plate, the central control unit includes a programmable logic controller (PLC) configured to synchronize the operation of all submodules via feedback control loops, which receive data from temperature, pH and optical sensors, thereby automating the synthesis, analysis and testing of V2O5 nanoparticles.

The utility model relates to a protective cover for a waterproof roll Soxhlet extractor experiment, which relates to the technical field of chemical experiment equipment and comprises a cover body, an air suction assembly and an exhaust assembly. The cover body is fixedly installed above a Soxhlet extraction test bed, the air suction assembly is installed in the cover body and used for sucking high-temperature and high-pressure gas generated in the experiment process into the cover body, and the exhaust assembly is installed on the cover body and used for exhausting the gas sucked by the air suction assembly out of the cover body. The device has the effect that high-temperature and high-pressure gas generated in the experiment process is rapidly exhausted, so that potential safety hazards in the experiment process are reduced.

The present invention belongs to the technical field of film-forming agents, and specifically relates to a method for determining the degree of crosslinking of film-forming agents. The dried film-forming agent is used as a test sample, and the mass of the test sample is calculated as M1; the test sample is wrapped with filter paper and placed in a filter bag to obtain a filter bag containing the test sample, and the total mass of the test sample, filter paper and filter bag is calculated as M2; the filter bag containing the test sample and a composite extractant are added to a Soxhlet extractor for extraction, and after the extraction is completed, the filter bag containing the remaining test sample is taken out, naturally dried, and dried to obtain a filter bag containing the remaining test sample after drying, and the total mass of the filter bag containing the remaining test sample after drying is calculated as M3. The method of the present invention is environmentally friendly, highly accurate, simple to operate, repeatable, and saves time and cost.

The embodiment of the invention provides an efficient synergistic extraction preparation method of asparagine and polysaccharide, the utilization rate of raw materials and the extraction efficiency of components are improved, and the method comprises the following steps: S1, extracting asparagine: S11, cutting radix asparagi into segments; s12, an ethanol solution with the volume fraction being 60%-80% is added, the material-liquid ratio is 1: 10-1: 30 g / mL, and soaking is conducted for 30-60 min; s13, sealing, placing in a constant-temperature oscillator, oscillating and extracting at 50-70 DEG C for 60-90 minutes, and filtering to obtain an extracting solution; s14, performing vacuum concentration on the extracting solution; and S15, freeze-drying the concentrated solution to obtain an asparagine crude extract. S2, extracting radix asparagi polysaccharide, namely filtering in S21 and S13 to obtain filter residues; s22, volatilizing the ethanol solution on the surface of the filter residue; s23, distilled water is added, the material-liquid ratio is 1: 20-1: 40 g / mL, and soaking is conducted for 30-60 min; s24, placing in a Soxhlet extractor, carrying out reflux extraction at 70-100 DEG C for 60-90 minutes, and filtering to obtain an extracting solution; s25, performing vacuum concentration on the extracting solution; s26, centrifuging or filtering out precipitates, and combining the precipitates; and S27, freeze-drying the precipitate to obtain the radix asparagi polysaccharide extract.

This invention belongs to the technical field of qualitative determination of ephedra, licorice, and bitter almond in traditional Chinese medicine compound preparations. This invention discloses a method for simultaneously identifying ephedra, licorice, and bitter almond in Ma Xing Shi Gan oral liquid. The test sample is placed in a Soxhlet extractor and treated with reagents of different properties to prepare a fractional extraction solution. Ephedra and licorice reference materials are then processed to obtain a reference material solution. Amygdalin reference standard is prepared by adding methanol to prepare a reference solution. The above test sample solution, reference material solution, and reference solution are used in a thin-layer chromatography system to simultaneously identify ephedra, licorice, and bitter almond. The results show that the chromatographic spots are well separated and clear, with no interference from the negative control. This method has simple pretreatment, is environmentally friendly, has high sensitivity, and its repeatability and robustness meet the requirements of the Chinese Veterinary Pharmacopoeia, thus enabling better quality control of Ma Xing Shi Gan oral liquid.

A functionalized covalent organic framework material containing dimethylamino and its preparation method are disclosed. This invention relates to a C2-type aldehyde monomer containing a dimethylamino functional group and a functionalized covalent organic framework material containing dimethylamino and its preparation method. The purpose of this invention is to solve the problems of insufficient functionalized monomers, easy pore blockage leading to decreased specific surface area, and insufficient selectivity and pH responsiveness in existing COF materials used for the adsorption and separation of biomolecules such as peptides. The method includes: 1. Weighing; 2. Anhydrous and anaerobic reaction; 3. Filtration; 4. Column chromatography purification; 5. Drying; 6. Weighing; 7. Anhydrous and anaerobic reaction; 8. Washing; 9. Deep washing with a Soxhlet extractor; 10. Drying and grinding. The invention innovatively introduces a new monomer with a basic recognition site, and through a "bottom-up" strategy, directly and uniformly introduces the dimethylamino functional group into the COF framework. The material exhibits good crystallinity and a high specific surface area (up to 2481 m²). 2 ( / g), and has significant pH responsiveness.

The invention discloses a plasticizer detection device and method for wastewater treatment, and particularly relates to the field of plasticizer detection.The plasticizer detection device comprises a support, a heater and a flask are arranged on the support, the heater is used for heating extraction liquid contained in the flask, and a Soxhlet extractor is installed at the upper end of the flask; a condensation pipe is mounted at the upper end of the Soxhlet extractor; the Soxhlet extractor comprises a tube body, a tube bottom is arranged at the bottom of the tube body, a containing assembly is arranged in the tube body, the containing assembly comprises a test tube, and the test tube is used for containing a sample to be detected. According to the invention, the containing assembly is designed, a solid sample evaporated in the test tube is not transferred, an extraction liquid cooled into liquid drops flows into the test tube and is mixed with the solid sample to extract a plasticizer in the sample, and the plasticizer flows into the tube body by opening the bottom opening and finally flows into the flask to complete extraction. And calculating to obtain the content of the plasticizer.

The embodiment of the invention provides a bearing retainer cleaning control method and device, and relates to the technical field of cleaning equipment.The method comprises the steps that a hydrocarbon solvent is stored through an extraction bottle of a Soxhlet extractor, a cooling system is started to cool and circulate cooling water, the hydrocarbon solvent is vaporized, the vaporized hydrocarbon solvent enters a condenser, and the vaporized hydrocarbon solvent enters the condenser; after being liquefied, the liquid hydrocarbon solvent is dropped into an extraction tube, a siphon of the extraction tube siphons the liquid hydrocarbon solvent into an extraction bottle to extract the bearing retainer, and a cooling system is controlled to be started or stopped according to the current temperature until the bearing retainer is cleaned; and after cleaning is completed, optical surface detection, geometric dimension detection and the like of the bearing retainer are carried out through the bearing retainer quality detection module. According to the embodiment of the invention, the cleaning degree of the retainer is improved, the damage to the mechanical structure and the surface quality of the retainer is avoided, independent work of a plurality of sets of extraction systems can be simultaneously realized, the cyclic utilization of the extraction solvent is realized, and the use efficiency of the extraction solvent is improved.

The utility model belongs to the technical field of Soxhlet extractors, in particular relates to a Soxhlet extractor matching device, and aims to solve the problems that the whole structure is not stable enough due to non-fixed connecting points of an existing Soxhlet extractor matching placing frame, an experiment fails due to the phenomena that a condensation pipe topples over and the like easily caused by the complicated structure of the device in the operation processes of mounting, dismounting and the like. In order to solve the problems that in the prior art, even safety accidents are caused, and the mounting position is inconvenient to adjust, the utility model provides the following scheme that the test tube rack comprises a plurality of test tubes and a placement table, the plurality of test tubes are positioned above the placement table, two support rods are arranged on each of the two sides of the placement table, two placement racks are arranged among the four support rods, and a base plate is mounted at the bottom end of each support rod. The test tube rack is simple in structure and convenient to use, test tubes can be conveniently and stably fixed and supported, meanwhile, the test tubes can be conveniently installed, the installation angle can be adjusted, different experiment modes are facilitated, and people can conveniently use the test tube rack.

An outlet of a first channel of a spherical condensation pipe extends into an extraction pipe, a heating sleeve is arranged outside the extraction pipe, a filter cartridge is detachably arranged in the extraction pipe, a cartridge opening of the filter cartridge is in a horn shape, the maximum caliber of the filter cartridge is the same as the inner diameter of the extraction pipe, and a connecting pipe is arranged on the side wall of the extraction pipe. The upper end of the connecting pipe is communicated with the upper end of the extraction pipe and positioned below the edge of the opening of the filter cartridge, the lower end of the connecting pipe is communicated with the lower end of the extraction pipe, an S-shaped return pipe communicated with the extraction pipe is arranged in the connecting pipe, the communicated part of the return pipe and the extraction pipe is positioned above the lower end of the connecting pipe, the opening of the return pipe faces downwards, and the lower port of the extraction pipe is positioned in the extraction bottle. According to the device, the problem of'drying period 'of a target extract in a traditional device is solved, the extraction efficiency is improved, the stability and the high efficiency of the extraction process are ensured, the problem of non-uniformity of sample infiltration is solved, and efficient separation and analysis of a complex sample are favorably realized.

The invention discloses a decoloring method of polyester cloth. The decoloring method comprises the following steps: preparing a Soxhlet extractor comprising a flask, an extraction tube, a siphon tube, a steam tube and a condensation tube; polyester cloth and a solvent are placed into an extraction tube and a flask respectively, the polyester cloth is dyed through dye, and the polyester cloth is in direct contact with the inner side wall of the extraction tube; the solvent in the flask is heated, so that the solvent is in a gaseous state, flows along the steam pipe to reach the condensation pipe, is in a liquid state after being in contact with the condensation pipe and flows back to the extraction pipe to be in contact with the polyester cloth until the liquid level of the solvent in the extraction pipe is higher than the highest position of the siphon. According to the decolorizing method, the decolorizing effects of high decolorizing rate and high whiteness can be achieved, so that the phenomenon that the dye residues cause cracking of the pelletized polyester at high temperature to generate substances harmful to human bodies or cause environmental pollution is avoided, and the recovered polyester can be dyed into other colors different from the color before decolorizing again.

The present invention discloses a method for controlling the wall thickness of a super-crosslinked polymer nanotube, comprising: S1, placing a beaker into a closed reaction device, exhausting the air in the reaction device and the pipeline; S2, introducing nitrogen, adjusting the airflow speed to stabilize the reaction conditions; S3, using a syringe to measure the monomer and injecting it into the flask, reselecting a syringe to weigh the polymerization monomer and injecting it into the flask, and vibrating it to fully mix it; S4, opening the bottle stopper and quickly pouring in the catalyst prepared in proportion, then tightening the bottle stopper, clamping the flask and immersing it in a silicone oil bath, heating and maintaining the speed, and maintaining the pressure of nitrogen during the reaction; S5, after the reaction is completely completed, filtering the turbid product after the reaction with filter paper, using anhydrous ethanol for preliminary rinsing during filtration, and then placing the product in a Soxhlet extractor for cleaning, and placing the cleaned product in a drying oven for drying, and finally obtaining a relatively pure super-crosslinked polymer nanotube. According to the present invention, the use of noble metal catalysts and templates is avoided, and the synthesis method is simple, the reagent cost is low, and the operating conditions are mild.

The invention provides a phenylalanine-tryptophan dipeptide skeleton mesoporous silicon material and a preparation method and application thereof.The preparation method comprises the steps that phenylalanine and tryptophan serve as raw materials to synthesize N-tert-butoxycarbonyl phenylalanyl tryptophan, the N-tert-butoxycarbonyl phenylalanyl tryptophan reacts with N-tert-butoxycarbonyl ethanediamine, then the N-tert-butoxycarbonyl phenylalanyl tryptophan reacts with N-tert-butoxycarbonyl N-tert-butoxycarbonyl is removed to obtain phenylalanyl tryptophan-ethanediamine hydrochloride, and then the phenylalanyl tryptophan-ethanediamine hydrochloride reacts with 3-isocyanate propyl triethoxy silane to obtain a phenylalanyl tryptophan dipeptide organic silicon precursor; mixing with tetraethyl orthosilicate according to a ratio, slowly dropwise adding into an acidic mixed solution of a template agent, deionized water and sodium chloride, carrying out water bath overnight, and carrying out high-temperature crystallization, suction filtration, water washing and drying at room temperature, so as to obtain the high-performance molecular sieve. And removing the template agent by using a mixed solvent of absolute ethyl alcohol and hydrochloric acid through a Soxhlet extractor, and drying at room temperature to obtain phenylalanine-tryptophan dipeptide skeleton mesoporous silicon materials with different proportions. The dipeptide skeleton meso-porous silicon material obtained by the method can effectively adsorb chloramphenicol, the adsorption capacity can reach 90mg / g, in addition, the influence of the external environment on the chloramphenicol is reduced, and the stability of the chloramphenicol is improved.

The invention discloses tupistra chinensis polysaccharide with antibacterial and anti-inflammatory effects as well as a preparation method and application thereof, and belongs to the technical field of biotechnology and medicine. The preparation method comprises the following steps: (1) selecting tupistra chinensis rhizomes, removing impurities, drying, grinding into fine powder, wrapping the fine powder with gauze, putting into a Soxhlet extractor, continuously and circularly extracting until an extracting solution becomes colorless, collecting medicine residues, transferring the medicine residues into a flask, refluxing, and drying; (2) putting the dried medicine residues into a flask, carrying out reflux extraction in a constant-temperature water bath, merging filtrate, and concentrating under reduced pressure until the filtrate is thick, so as to obtain concentrated filtrate; and (3) carrying out alcohol precipitation treatment on the concentrated filtrate, carrying out suction filtration separation to obtain a precipitate, and washing, drying and grinding the precipitate to obtain the tupistra chinensis polysaccharide. The tupistra chinensis polysaccharide prepared by the invention can recover a damaged intestinal flora structure and increase the diversity of intestinal microorganisms, and is also beneficial to relieving body inflammation caused by LPS and escherichia coli treatment and relieving symptoms of inflammatory bowel diseases.

The application discloses a metal covalent organic framework material, a mediated steady-state electrochemiluminescence sensor and application of the sensor in the field of Escherichia coli detection, wherein the preparation method of the metal covalent organic framework material is as follows: tris(4,4'-dicarboxylic acid-2,2'-bipyridyl) dichlororuthenium, 1,2,4,5-benzene tetraamine tetrahydrochloride and polyphosphoric acid are added into a polytetrafluoroethylene autoclave, heated at 150 DEG C for 24 hours, and then heated at 180 DEG C for another 24 hours to obtain a mixture; after the pH of the obtained mixture is adjusted to 8.5 by using a saturated NaHCO3 solution, black powder is precipitated, the black powder is collected by centrifugation, and the black powder is washed with water, methanol and acetone in sequence by using a Soxhlet extractor for 12 hours; the washed black powder is vacuum dried at 100 DEG C for 6 hours to obtain a ruthenium metal covalent organic framework material; the ruthenium metal covalent organic framework material is used as a signal source of an electrochemical sensor, and a PEG-CS modified interface is constructed on an electrode to enhance the antifouling performance of the sensor in a complex matrix; a molecular amplification method (polymerase chain reaction PCR and HCR) is adopted to fix a large amount of Ru-MCOFs materials on the surface of the electrode, so that a stable electrochemical sensor is developed and assembled, and the stable electrochemical sensor can be used for detecting common foodborne pathogenic bacteria.

This invention relates to a method for recovering anthraquinones from spent activated alumina using a Soxhlet extractor. The method first involves adding a solvent or mixed solvent to a reactor, then adding dried spent activated alumina to the Soxhlet extractor, which is then installed on the reactor. Heating causes the solvent to vaporize, rise, condense, and flow back into the reactor, repeating this cycle. After the experiment, the extract is rotary evaporated under reduced pressure until no more solvent is distilled off; the remaining solid is the product. This invention maximizes the recovery of anthraquinones and hydroanthraquinones. Furthermore, ethanol and cyclohexane have lower boiling points than the working solvents, resulting in lower energy consumption and a more environmentally friendly approach.

The application discloses a plasticizer detection device and method for wastewater treatment, and particularly relates to the field of plasticizer detection. The plasticizer detection device comprises a support, a heater and a flask arranged on the support. The heater is used for heating the extraction liquid contained in the flask. The upper end of the flask is provided with a soxhlet extractor. The upper end of the soxhlet extractor is provided with a condenser tube. The soxhlet extractor comprises a tube body. The bottom of the tube body is provided with a tube bottom. The inside of the tube body is provided with a containing assembly. The containing assembly comprises a test tube. The test tube is used for containing a sample to be measured. The application designs the containing assembly. The solid sample evaporated in the test tube is not transferred. Instead, the extraction liquid cooled into droplets is caused to flow into the inside of the test tube and mix with the solid sample, so as to extract the plasticizer in the sample. Then, the bottom opening is opened, so that the extraction liquid flows into the tube body and finally flows into the flask, thereby completing the extraction. Finally, the content of the plasticizer is calculated.

The invention discloses a sludge-based amino acid / phosphoric acid modified copper oxide and a preparation method and application thereof, and relates to the technical field of electro-catalysis, solid waste recycling and carbon neutralizer.The preparation method comprises the following steps that 1, sludge-based phosphoric acid and sludge-based copper oxide are subjected to a hydrothermal reaction, filtering and drying, and the sludge-based phosphoric acid modified copper oxide is obtained; and (2) under the action of a cross-linking agent and a surfactant, carrying out hydrothermal reaction on the sludge-based phosphoric acid modified copper oxide and sludge-based amino acid, filtering, extracting by using a Soxhlet extractor, and drying to obtain the sludge-based amino acid / phosphoric acid modified copper oxide. According to the sludge-based amino acid / phosphoric acid modified copper oxide, the activity of the low-concentration CO2 electrocatalytic reduction reaction in industrial flue gas can be remarkably improved, the competitive oxygen reduction reaction is inhibited, and the application potential of the CO2 electrocatalytic reduction technology in the industrial field is improved.

The invention provides a method for efficiently extracting solanesol in waste and inferior tobacco leaves, which comprises the following steps of: 1, sufficiently grinding and mixing the crushed waste and inferior tobacco leaves and an organic porous polymer modified by alkaline ionic liquid to obtain a mixture; 2, the mixture is poured into an organic solvent and heated, solanesol ester is subjected to a hydrolysis reaction, after the reaction is finished, the organic solvent is removed through slow volatilization, and a solid mixture is obtained; and 3, putting the obtained solid mixture into a Soxhlet extractor, carrying out reflux extraction by using a low-boiling-point non-polar solvent, and removing the organic solvent from the extracting solution under reduced pressure to obtain the solanesol extract. According to the method, the solanesol ester is efficiently hydrolyzed and the solanesol in plants is enriched by using the alkaline ionic liquid organic porous polymer, so that the use of conventional micromolecular inorganic alkali is avoided, convenience is provided for subsequent separation, the extraction rate of the solanesol reaches 90% or above, and the content of the solanesol in the extract is 50% or above.

The application discloses a preparation method of a magnetic oil-absorbing resin based on a high internal phase emulsion template. First, a certain amount of magnetic nanoparticles, an initiator and a surfactant are added into a solution containing monomers, a crosslinking agent and a pore-forming agent, and after being uniformly mixed, an oil phase is obtained; then, under mechanical stirring, a calcium chloride aqueous solution is slowly added into the oil phase to obtain a water-in-oil high internal phase emulsion; then, a polymerization reaction is carried out at 70 DEG C for about 24 hours; after being extracted by anhydrous ethanol by means of a Soxhlet extractor and vacuum dried, the magnetic oil-absorbing resin is obtained. By adjusting the content of the magnetic nanoparticles, the pore structure and oil-absorbing performance of the magnetic oil-absorbing resin are optimized, and a series of magnetic oil-absorbing resins are prepared, which exhibit good oil-absorbing performance, magnetic response and recycling performance.

The application relates to a thioureido aromatic porous organic polymer and a preparation method and application thereof, and belongs to the technical field of functional polymer adsorption materials. The preparation method comprises the following steps: dissolving a plurality of ternary aromatic amine monomers with different electron-donating effects and cheap binary isothiocyanate monomers respectively, mixing and shaking, reacting to obtain a porous organic polymer network, and performing organic gel display; grinding the organic gel into powder, performing solvent exchange in dichloromethane, treating in methanol by using a Soxhlet extractor, and finally drying to obtain the product. The thioureido aromatic porous organic polymer provided by the application has good adsorption selectivity to Au, high adsorption capacity, a wide pH range, good cyclic adsorption performance, a simple preparation method, and high practical application value.

The invention relates to the technical field of periplaneta americana powder microscopic flaking, and discloses a periplaneta americana powder microscopic identification method which comprises the following steps: S1, sample degreasing: dividing a periplaneta americana adult into five parts, namely a head part, a chest back plate, wings, an abdomen part and chest feet by using tweezers, respectively grinding into powder, taking 100g of powder of each part of the periplaneta americana, and uniformly mixing the powder with the powder of each part of the periplaneta americana; respectively filling the materials into a filter paper tube, putting the filter paper tube into an extraction tube of a Soxhlet extractor, soaking the American cockroach powder with an extracting solution, and removing grease; s2, sample tabletting: taking the degreased powder, respectively adding distilled water, chloral hydrate and dilute glycerol for tabletting, and preparing a water-loaded tablet, a chloral hydrate cold-loaded tablet and a chloral hydrate permeabilized tablet; s3, microscopic observation: placing the prepared loading sheet under an optical microscope, and carrying out image acquisition and analysis on powder characteristics by using image processing software equipped for the microscope; and S4, identification standard. Compared with the prior art, the method has the advantages that grease is convenient to remove, the observation definition and accuracy are improved, a microscopic identification standard is established, and an identification system is perfected.

The invention discloses a method for extracting fat of koji worms, which comprises the following steps of: drying and crushing the koji worms, and filling the koji worms into a Soxhlet extractor according to a material-liquid ratio of (1: 25)-(1: 35) g / mL by taking petroleum ether as a solvent; and extracting at 55-65 DEG C for 7-9 hours, and carrying out rotary evaporation to obtain the koji insect fat. Through a single factor test and a response surface method, a koji insect fat extraction process (the extraction rate is increased to 7.67% + / -0.53%) is optimized, and the fatty acid composition (containing 25 fatty acids and the proportion of unsaturated fatty acid is 64.30%-69.99%), the volatile matter characteristics (such as green pepper flavor and fruit flavor compounds) and the antioxidant activity (the capacity of scavenging hydroxyl free radicals in oil of beetle beetles is superior to that of beetle beetles) of the koji insect fat are systematically disclosed for the first time.

The invention discloses an asphalt detection device based on Soxhlet extraction and speed control chromatography. The asphalt detection device comprises a Soxhlet extraction system and a multi-channel stepless speed control chromatography system, the Soxhlet extraction system comprises a conical flask, a Soxhlet extractor, a snakelike condensation pipe and a heating jacket; the lower end of the Soxhlet extractor is connected with a conical flask, the upper end of the Soxhlet extractor is connected with a snake-shaped condensation pipe, and the conical flask is arranged in the heating sleeve; a vacuum pump connector is formed in the top of the S-shaped condensation pipe and connected with an external vacuum pump. The multi-channel stepless speed control chromatography system comprises four chromatography columns which are connected in parallel and an air peristaltic pump, and the air peristaltic pump is connected with the four chromatography columns respectively; an electromagnetic switching valve and an ultraviolet-visible spectrum detector are arranged at the bottom of each chromatographic column; and a conical flask is arranged below each chromatographic column. By improving the permeation efficiency of the solvent, accurate control of the chromatography flow rate and synchronous detection of multiple channels are realized.

The utility model discloses a kind of ultrasonic wave reinforced composite soxhlet extractor rapid organic matter extraction device, the distillation flask top of the device is equipped with extraction bottle, condenser is installed in extraction bottle top, extraction bottle and connecting pipe both sides are equipped with coupling pipe and siphon, extraction bottle middle section is rectangle and is equipped with fluorescence scanner in one side, extraction bottle inner chamber is equipped with support plate, support plate top surface is equipped with ultrasonic generator and sample extraction package in proper order, filter plate is equipped in extraction bottle inner wall above sample extraction package, filter plate includes center plate and edge plate, edge plate bottom surface is equipped with the first and second cleaning block of symmetrical arrangement, first and second cleaning block side is equipped with filter cloth, the tail end is connected with the side surface of center plate, center plate top surface is equipped with the waterproof drive motor of two output ends, waterproof drive motor is connected with the tail end of traction cable of second cleaning block by the roller shaft of output end and winding connection. The device reduces the possibility of impurities mixed in soxhlet extractor distillation finished product, improves organic matter extraction quality.

The invention relates to the technical field of volatile oil component analysis, in particular to a laggera laggera volatile oil chemical component analysis experimental device and method.The laggera laggera volatile oil chemical component analysis experimental device comprises a Soxhlet extractor, a snakelike condenser and a controller, the snakelike condenser comprises an obliquely-arranged outer cylinder, a support is fixedly connected to the outer side wall of the outer cylinder, and a liquid outlet pipe is communicated with the top of the outer cylinder; the bottom of the outer cylinder communicates with a liquid inlet pipe; a straight pipe and a spiral blade are arranged in the outer barrel, the two ends of the straight pipe penetrate through the bottom wall and the top wall of the outer barrel and extend out of the outer barrel, the outer barrel is rotationally matched with the straight pipe, the spiral blade is fixedly connected to the outer side of the straight pipe in a sleeving mode, a spiral coiled pipe is fixedly connected to the outer side wall of the spiral blade, and the two ends of the coiled pipe are communicated with the straight pipe; the middles of the inner side walls of the straight pipes are fixedly connected with stop blocks. The temperature distribution is more uniform by rotating the coiled pipe, the condensation process is facilitated, and the condensation efficiency is improved.

The utility model discloses a special extraction device for down feather residual fat rate, and particularly relates to the technical field of extraction devices, the special extraction device comprises a plurality of Soxhlet extractors and a water bath heating assembly for heating the Soxhlet extractors, the Soxhlet extractors comprise extractors and siphons fixed on one sides of the extractors, an external measurement liquid level meter is arranged at the highest position of the outermost end of the siphon, a control panel and an alarm are arranged on the front side of the water bath heating assembly, a touch display screen is fixedly arranged on the front side of the control panel, and a controller, an electronic timing module, a counting sensor and a networking module are arranged in the control panel. According to the utility model, the liquid level height of the siphon is sensed through the external measurement liquid level meter, the backflow process is further sensed, the backflow times are calculated under the action of the counting sensor, and the controller adjusts the water bath heating temperature, so that an experimenter does not need to supervise and count in real time, the operation is more convenient, and the accuracy of an extraction experiment is also improved.

The invention relates to a method for enriching rare and noble metals in hot filter residues, which comprises the following steps of: cooling the hot filter residues after production of sulfur to room temperature, crushing and then grinding; then putting the ground hot filter residues into a Soxhlet extractor, carrying out distillation elution by taking carbon disulfide as an eluent until the mass of the hot filter residues is not changed, and filtering to respectively obtain eluted hot filter residues and sulfur-containing filtrate; the eluted hot filter residues are dried to obtain enriched rare and noble metal filter residues; the sulfur-containing filtrate is evaporated to obtain a superior sulfur solid, and evaporated carbon disulfide is condensed and then flows back to the Soxhlet extractor. The process is simple, the obtained rare and precious metal concentrate is high in quality and recovery rate, and the enriched rare and precious metal concentrate can directly enter a rare and precious metal production line.

An extraction bottle is arranged at the top of a distillation bottle of the device, a condensation pipe is installed at the top of the extraction bottle, a connecting pipe and a siphon pipe are arranged on the two sides of the extraction bottle and a connecting pipe, the section of the middle of the extraction bottle is rectangular, and a fluorescent scanner is arranged on one side of the extraction bottle; a supporting plate is arranged in an inner cavity of the extraction bottle, an ultrasonic generator and a sample extraction bag are sequentially arranged on the top surface of the supporting plate, a filter plate is arranged on the inner wall of the extraction bottle and above the sample extraction bag, the filter plate comprises a central plate block and an edge plate block, and a first cleaning block and a second cleaning block are symmetrically arranged on the bottom surface of the edge plate block; filter cloth with the tail ends connected with the side face of the center plate is arranged on the side faces of the first sweeping block and the second sweeping block, a waterproof driving motor with two output ends is arranged on the top face of the center plate, and the waterproof driving motor is in winding connection with the tail end of a traction rope connected with the second sweeping block through a roller shaft at the output end. According to the device, the possibility that impurities are mixed in a distillation finished product of the Soxhlet extractor is reduced, and the organic matter extraction quality is improved.