40results about How to "Extended extraction time" patented technology

The invention relates to an expansion type multi-grade pressurized rapid hole sealing technology. A device adopted by the expansion type multi-grade pressurized rapid hole sealing technology is provided with a tubular extraction pipe; an extraction pipe plug is arranged at the top of the extraction pipe; a hole-sealing blossom cup is arranged at the front end of the extraction pipe; the extraction pipe is provided with a plurality of expansion type hole sealing bags from front to back; the expansion type hole sealing bags are arranged at intervals by macromolecular foaming materials I; macromolecular foaming materials II are arranged at the opening of an extraction drilled hole; a tubular slurry filling pipe I and a slurry discharging pipe pass through the macromolecular foaming materials II to extend into a sealed space of a hole sealing section; and a tubular slurry filling pipe II sequentially passes through the macromolecular foaming materials II, the sealed space of the hole sealing section and the macromolecular foaming materials I to enter the expansion type hole sealing bags. The pressurized rapid hole sealing technology disclosed by the invention can be used for plugging coal layer fractures for multiple times and does not influence normal gas extraction from the drilled hole when the hole sealing is carried out for two or more times, so that the effect of extracting the gas by the drilled hole is effectively improved and the extraction time is prolonged; and the whole extraction process is convenient and reliable, and the cost is low.

The invention relates to a co-extraction method for pillar-less coal and gas of advanced entry-retaining construction extraction engineering. The co-extraction method comprises the following steps: firstly, pre-constructing a drill hole on a front directional coal layer of a coal extraction working surface; confirming positions of top and bottom plate of the coal layer in a wedge-shape vertical crack area; before starting a gob-side entry retaining process, drilling gas extraction drill holes on the top plate, bottom plate and two sides of gob-side in front of the coal extraction working surface, and then forward pushing the coal extraction working surface to cross the gas extraction drill holes; while forward pushing, finishing the gob-side entry retaining behind the coal extraction working surface; and sealing the gas extraction drill holes on the top plate, bottom plate and two sides of gob-side when a flow value of to-be-extracted gas pressure is greatly reduced. The drilling construction in the retaining entry is unnecessary, the demand on the size of the cross section of the retaining entry is reduced, the demand on restraining volume of the cross section is reduced and the time for efficiently extracting gas is prolonged.

The invention discloses a multiple-magnetron type large-capacity microwave-assisted extraction machine and a microwave-assisted extraction method thereof, belonging to the field of biological raw material extraction equipment and an extraction method. The multiple-magnetron type large-capacity microwave-assisted extraction machine comprises a rack, a transmission device, a microwave tank, a microwave device, an air-entrapping device, a rotor device, a discharging device and a control device, wherein a plurality of magnetron installing holes uniformly and equidistantly distributed are formed in the wall of the microwave tank; the microwave device comprises a plurality of high-frequency magnetrons which are uniformly and equidistantly arranged on the wall of the microwave tank, and the high-frequency magnetrons are connected with an external power source; the air-entrapping device comprises a plurality of compressed air inlets formed in the wall of the microwave tank, a compressed air input pipeline and a plurality of electromagnetic valves; the rotor device comprises a rotating shaft and a plurality of stirring wings which are fixed on the rotating shaft and form certain crossing angles with the rotating shaft. The multiple-magnetron type large-capacity microwave-assisted extraction machine has the advantages that feed liquid in the microwave tank continuously runs and interchanges, an extractive is uniformly subjected to the action of an electromagnetic field to be heated, the extraction rate is increased, and the extraction time is shortened.

The invention discloses a tea extraction cup, comprising a cup body, a cup bottom closing the bottom of the tea body and a sealing cover closing the mouth end of the cup body. The side wall of the cup body is provided with an air pipe; the air inlet of the air pipe is arranged at the mouth end of the cup body, and the air outlet is close to the cup bottom. The tea extraction cup of the invention is convenient to recognize the tea type by a recognition device and increases the tea extraction speed during infusion and is very convenient to use.

A coal and gas coordination mining method relates to the coal mine mining and gas extraction field; a plurality of parallel bedding pores are arranged in the present section and the lower adjacent section along the coal seam direction in a haulage way, and are connected with extraction pipelines so as to extract gas from the coal seam area in the upper and lower sections; the method also comprises the following steps: tunneling back to a tailgate of the present section when the gas extraction is over, and tunneling to the haulage way of the lower section in the same time; finishing the present working face extraction when the tunneling is completed; repeating said steps until extractions of all section coal seams are finished. The advantages are that the coal and gas coordination mining method can save gas total extraction time, can accelerate coal road tunneling speed, thus realizing extraction, tunneling and drawing balance, and improving production efficiency.

The invention discloses a ploytetrahydrofuran glycol, the construction formula is presented in I, the number average molecular weight is between 650-3500 and molecular weight distribution Mv / Mn is between 1.2-1.7. The invention also discloses the method for preparing said polymer, comprising following steps: tetrahydrofuran and proton donor reacting to generate ploytetrahydrofuran glycol under action of heteropoly acid catalyst in the polymerization reactor equipped with stirring device, monitoring the tetrahydrofuran polymerization rate, controlling the polymerization rate by adjusting proton donor adding amount and getting final product with needed number average molecular weight and molecular weight distribution. The invention also discloses the method for purifying ploytetrahydrofuran glycol. The number average molecular weight is accurately controlled on line in this invention, and the product is characterized by regular construction, narrow molecular weight distribution, low viscosity and good processing property. HO*(CH2)O4*nH (I)

The invention discloses an eucommia ulmoides seed oil powder electuary and a preparation method thereof. The preparation method comprises the steps of pretreatment of raw materials, vacuum microwave heat-moisture treatment, supercritical extraction and oil extraction, mechanical ball milling and activation, ultrahigh-pressure homogeneous treatment, concentration and drying and mixing and drying. According to the method, eucommia ulmoides key fruits are used as raw materials, and eucommia ulmoides seed oil is extracted from the eucommia ulmoides key fruits at first; then, waste eucommia ulmoides seeds after oil extraction are reasonably used as raw materials, technologies such as mechanical ball milling and activation, ultrahigh-pressure homogeneous treatment and spraying and drying are adopted, and seed activation powder which has small-molecular protein, starch and a small amount of eucommia ulmoides gum and has a good embedding effect and emulsifiability is prepared; furthermore, eucommia ulmoides seed oil is used as a core material, seed active powder is used as a wall material, through super-fine comminution treatment and vacuum spraying and drying, powdered oil which is good in mobility and dispersity can be prepared, and the electuary has the functions of reducing blood fat, lowering blood pressure, promoting development of the nervous system, the brain and the retina, preventing the senile dementia and allergy and the like.

A method for extracting quercetin and isoquercitrin from hypericum ascyron L. is disclosed. The method includes 1) a step of cleaning and airing the hypericum ascyron L., crushing the hypericum ascyron L. by utilizing a crusher, and sieving the crushed hypericum ascyron L.; 2) a step of performing subcritical water extraction, namely a step of adding the treated raw material into an extraction kettle, adding hydroxyethyl cellulose the weight of which is 0.001 part of the weight of the raw material into the kettle, injecting deoxygenated deionized water into the kettle, extracting the hypericumascyron L. at 170-200 DEG C under 8-10 MPa for 0.5-1.0 h, after the extraction is finished, performing pressure relief, collecting extraction liquids at 170-185 DEG C and at 185-200 DEG C under 8-10MPa respectively, allowing the extraction liquids to flow into collection tanks, and cooling the extraction liquids to room temperature; and 3) a step of purification, namely a step of separately concentrating the extraction liquids obtained in the step 2), separately performing column chromatography utilizing macroporous resin, performing elution with an ethanol solution having a concentration of50% v / v to obtain eluates, concentrating the eluates, and drying concentration products to obtain finished products.

The invention discloses a method for extracting general flavone from herba lysimachiachristinae hance. The method comprises the following steps of (1) cleanly cleaning the herba lysimachiachristinae hance; drying the herba lysimachiachristinae hance; pulverizing the herba lysimachiachristinae hance by a pulverizer; performing sieving; (2) performing subcritical water extraction: putting the treated raw materials into an extraction kettle; adding hydroxyethyl cellulose accounting for 0.001 weight part of the raw materials; injecting deoxygenated deionized water into the kettle; extracting the herba lysimachiachristinae hance under the conditions that the extraction temperature is 150 to 250 DEG C, the pressure is 8 to 10Mpa and the extraction time is 0.5 to 1.0h; after the extraction is finished, performing pressure relief; enabling extraction liquid to flow into a collecting tank; performing cooling to room temperature to obtain extraction liquid; (3) performing purification: concentrating the extraction liquid obtained in the second step; performing column chromatography through macroporous resin; performing elution by 50-percent v / v ethyl alcohol to obtain elution liquid; performing concentration and drying to obtain a finished product.

A method for extracting chlorogenic acid from lysimachia christinae Hance is disclosed. The method includes 1) a step of cleaning and airing the lysimachia christinae Hance, crushing the lysimachia christinae Hance by utilizing a crusher, and sieving the crushed lysimachia christinae Hance; 2) a step of performing subcritical water extraction, namely a step of adding the treated raw material intoan extraction kettle, adding hydroxyethyl cellulose the weight of which is 0.001 part of the weight of the raw material into the kettle, injecting deoxygenated deionized water into the kettle, extracting the lysimachia christinae Hance at 240-250 DEG C under 8-10 MPa for 0.5-1.0 h, after the extraction is finished, performing pressure relief, allowing an extraction liquid to flow into a collectiontank, and cooling the extraction liquid to room temperature to obtain the extraction liquid; and 3) a step of purification, namely a step of concentrating the extraction liquid obtained in the step 2), performing column chromatography utilizing macroporous resin, performing elution with an ethanol solution having a concentration of 50% v / v to obtain an eluate, concentrating the eluate, and dryinga concentration product to obtain a finished product.

A method for extracting isoquercitrin from bidens pilosa L. is disclosed. The method includes 1) a step of cleaning and airing the bidens pilosa L., crushing the bidens pilosa L. by utilizing a crusher, and sieving the crushed bidens pilosa L.; 2) a step of performing subcritical water extraction, namely a step of adding the treated raw material into an extraction kettle, adding hydroxyethyl cellulose the weight of which is 0.001 part of the weight of the raw material into the kettle, injecting deoxygenated deionized water into the kettle, extracting the bidens pilosa L. at 185-200 DEG C under8-10 MPa for 0.5-1.0 h, after the extraction is finished, performing pressure relief, allowing an extraction liquid to flow into a collection tank, and cooling the extraction liquid to room temperature to obtain the extraction liquid; and 3) a step of purification, namely a step of concentrating the extraction liquid obtained in the step 2), performing column chromatography utilizing macroporousresin, performing elution with an ethanol solution having a concentration of 50% v / v to obtain an eluate, concentrating the eluate, and drying a concentration product to obtain a finished product.

The invention discloses a method for extracting ferulic acid from herba desmodii syracifolii. The method comprises the following steps: firstly, cleaning the herba desmodii syracifolii, drying in air,crushing the herba desmodii syracifolii by using a crusher, and sieving; secondly, carrying out subcritical water extraction: putting the treated raw materials into an extraction kettle, adding hydroxyethyl cellulose of which the proportion is equivalent to 0.001 weight part of the raw materials, injecting deoxygenated deionized water into the kettle, and extracting the herba desmodii syracifoliiat the extraction temperature of 160 to 170 DEG C and the pressure of 8 to 10Mpa for 0.5 to 1.0 hour; after extraction is ended, relieving the pressure, enabling an extracting solution to flow into acollecting tank, and cooling to room temperature to obtain the extracting solution; thirdly, purifying: concentrating the extracting solution obtained in the second step, carrying out column chromatography by macroporous resin, eluting with 50 percent v / v of ethanol to obtain an eluent, and concentrating and drying to obtain a finished product.

The invention discloses a method for extracting quercetin and isoquercitrin from P. punctatus, comprising the following steps: 1) cleaning P. punctatus, drying, pulverizing with a pulverizer, and sieving; 2) Subcritical water extraction: put the treated raw materials in an extraction kettle, add hydroxyethyl cellulose equivalent to 0.001 parts by weight of the raw materials, inject deoxygenated deionized water into the kettle, and extract at a temperature of 170-200°C and a pressure of 8 ‑10Mpa, the extraction time is 0.5‑1.0h, extract the ghost needle grass, the extraction is completed, the pressure is released, and two parts of the extract are collected at 170‑185°C and 185‑200°C respectively under 8‑10Mpa, and the liquid flows into the collection Cool in the tank to room temperature; 3) Purification: Concentrate the extract obtained in step 2), perform column chromatography through a macroporous resin, and elute with 50% v / v ethanol to obtain an eluate, concentrate, and dry to obtain the finished product .

The invention discloses a multi-material mixing system used for production. The system comprises a processing box, material inlets, a raffinate phase outlet, a filler layer and an extract phase outlet, and the two material inlets are arranged at the top of the processing box; the filler layer is arranged at the middle portion of the processing box, and a mixing mechanism A and a mixing mechanism B are respectively arranged above and below the filler layer; each of the mixing mechanism A and the mixing mechanism B comprises a stirring shaft, spiral stirring paddles arranged on the stirring shaft, a stirring motor connected with the end portion of the stirring shaft, and separation plates, with the radius equal to the internal diameter of the processing box, for dividing the processing box into a plurality of mixing chambers; and a plurality of holes are uniformly distributed in every separation plate, a through hole for the stirring shaft to pass through is arranged in every separation plate, the stirring shaft of the mixing mechanism A stretches into the processing box from the top of the processing box, and the stirring shaft of the mixing mechanism B stretches into the processing box from the bottom of the processing box. The system effectively improves the extraction efficiency of 2,4-dichlorofluorobenzene.

The invention provides a method for extracting beta-carotene from Dunaliella salina by utilizing subcritical fluid. The method comprises the following steps: I, processing the Dunaliella salina to prepare Dunaliella salina granules; II, fill kettle with granules the Dunaliella salina granules into an extraction kettle, and introducing the subcritical fluid into the extraction kettle; then performing heating extraction under stirring to obtain extract and an extracted solid; III, introducing the extract into a separation kettle from the extraction kettle for decompression separation to obtain beta-carotene extractum. According to the method provided by the invention, a subcritical fluid extraction method is applied to extracting the beta-carotene of the Dunaliella salina, oxidation loss of the natural beta-carotene is reduced by low-temperature continuous counterflow extraction and low-temperature separation, and the yield is greatly increased; moreover, the safety problem of solvent residue is solved by the low-temperature separation, meanwhile, extraction cost is greatly reduced, and industrial production is easy; a brand-new way is opened for extracting the natural beta-carotene extractum from the Dunaliella salina by the method provided by the invention.

A method of ultrasound-assisted headspace liquid-phase micro-extraction is: getting a clean ultrasonic cleaning machine (1), an insulation board (2), a PCR tube (6) of 0.2mL, a sample bottle (7), a bottle stopper (8) and an ice bath (4); fixing the sample bottle (7) at the center of the insulation board, and the sample is contained in the sample bottle, of which the lower is immersed in the water bath of the ultrasonic cleaning machine (1) where the insulation board is covered; cutting off the cap of the PCR tube (6) of 0.2mL where 10 to 40 mu L extract is contained; inserting the PCR tube with the nozzle upwards into the small hole of the bottle stopper which is put into the sample bottle with sample and the bottom of the PCR tube upwards, and sealed; the upper of the sample bottle together with the PCR tube is put in to the ice bath; ultrasonic extraction. The method for utilizing the PCR tube increases the liquid extraction quantity and extends the extraction time effectively, and the method adapts to extraction and enrichment of trace volatile and semi-volatile components in complex water sample because of having a high efficiency, a high sensitivity and a simple operation.

The invention discloses a method for extracting total flavonoids from herba desmodii styracifolii. The method comprises the following steps: (1) cleaning and airing the herba desmodii styracifolii, crushing by using a crushing machine, and screening; (2) performing subcritical water extraction, namely, placing the treated raw material in an extracting kettle, adding hydroxyethyl cellulose which isequivalent to 0.001 weight part of the raw material, injecting deoxygenated deionized water into the kettle, extracting the herba desmodii styracifolii, relieving pressure after the extracting is ended, enabling extracting liquid to flow into a collecting tank, and cooling to room temperature to obtain the extracting liquid, wherein the extracting temperature is 150 to 250 DEG C, the pressure is8 to 10 Mpa, and the extracting time is 0.5 to 1.0 h; (3) purifying, namely, concentrating the extracting liquid which is obtained in the step (2), performing column chromatography through macroporousresin, eluting by using 50 percent v / v ethyl alcohol, thus obtaining eluant, concentrating, and drying to obtain a finished product.

The invention discloses a device for removing impurities and extracting NdFeB waste, which includes a reaction pot, a filter box, an extraction tank, a saponification mixing tank, a stripping box and a collection box. A first feeding box is arranged on one side of the reaction pot. The inside of the extraction tank is provided with a material distributing mechanism, a stirring mechanism and a pre-stirring plate. One side of the extraction tank is provided with a secondary separation tank. One side is provided with a second outlet pipe, the bottom of the extraction tank is provided with a tee pipe, the inside of the extraction tank and the secondary separation tank are provided with turbidity sensors, and the top of the saponification mixing tank is provided with a second feeding box and The third feeding box. In the present invention, the filtrate is evenly sprayed on the multi-layer distribution board through the multi-layer spray plate and the atomizing nozzle to accelerate the saponification reaction, and the mixed liquid is discharged to the inside of the pre-stirring plate for preliminary stirring and mixing, and then enters the extraction tank for re-mixing to speed up the mixing. Uniformity and speed with increased extraction.

The invention discloses traditional Chinese medicine tablets for treating the self-biting behavior of minks and a preparation method thereof.The traditional Chinese medicine tablets are prepared from radix et caulis acanthopanacis senticosi, bark or branches and leaves of melaleuca leucadendra, white quartz, cornu gorais, roots of stemmacantha carthamoides, all-grass of ludisis discolor, rhizomes of featherleaf rodgersflower, basal leaves or seeds of brassica integrifolia, radix cynanchi atrati, Chinese prickly ash, spina gleditsiae, folium eucalypti, pomelo pits, bus of citrus aurantium, rose flowers, albizia flowers, bark of Japanese pagodatree, radix astragali, red halloysite and honey.The traditional Chinese medicine tablets are an environment-friendly preparation, are nontoxic and harmless to minks and do not contain chemicals or antibiotics; in the use process, the traditional Chinese medicine tablets are mashed and mixed into basal feed of minks to feed minks; the traditional Chinese medicine tablets have a good treatment effect on milks with the self-biting behavior, are high in effective rate, and can promote rapidly recovery of minks, shorten the healing recovery period, promote regeneration of fur of the infected parts of minks, stimulate the healthy sustainable development of the mink breeding industry and increase the economic benefits of farmers.

The invention discloses a method for extracting isoquercitrin from Desmodium sativa, comprising the following steps: 1) Cleaning the grass of Desmodium, drying it, pulverizing it with a pulverizer, and sieving it; 2) Subcritical water extraction: put the processed raw materials in the extraction kettle, add 0.001 parts by weight of hydroxyethyl cellulose equivalent to the raw materials, inject deoxygenated deionized water into the kettle, the extraction temperature is 185-200°C, and the pressure is 8-10Mpa , the extraction time is 0.5-1.0h, extracting Desmodium sativa, the extraction is finished, the pressure is released, and the extract flows into the collection tank and is cooled to room temperature to obtain the extract; 3) Purification: the extract obtained in step 2) is concentrated, passed The macroporous resin is subjected to column chromatography, eluted with 50% v / v ethanol to obtain an eluent, concentrated and dried to obtain a finished product.

The invention discloses a hole fixing device for drilling a coal seam. The hole fixing device comprises a cylinder with a central channel, wherein a convex connecting part and a concave connecting part are arranged at two ends of the cylinder in the same axial direction respectively; and at least two retractable hole fixing structures are uniformly arranged on the outer surface of the cylinder along the peripheral direction. The hole fixing device disclosed by the invention can be used for fixing a drilled hole in a drilling process; a wall surface of the drilled hole can be fixed in a normal construction and drilling process, so as to protect the drilled hole, and a condition that the drilled hole is scrapped, caused by the fact that a hole wall in the hole collapses to block the hole, is prevented; the drilling and hole forming yield is remarkably improved, extra procedures are not needed, and extra material consumption is not caused, so that the wastes of labor hours and materials are greatly reduced; and the drilling and extraction time is effectively prolonged, the gas extraction effect is improved, and the problem that the drilled hole is scrapped due to hole collapsing and blocking in a coal seam extraction process is effectively solved.

This invention relates to one liquid phase extract sample front process method, which comprises the following steps: a, taking one magnetic mixture device and one tube cover PCR tube for 0.2 ml without cover, one sample bottle, bottle plug and mixture magnetic probe; b, containing extraction liquid in bottom of PCR tube for liquid sealing by sample liquid; c, plugging the PCR tube into bottle plug; d, taking sample liquid in the sample bottle with mixture magnetic probes; e, containing the plug of tube into sample bottle for mixing and extraction.

The invention discloses a solvent cyclic extraction device, and the device comprises a layering pipe, a first adapter valve, a second adapter valve, a third adapter valve, a collecting bottle, a sample bottle, a cleaning bottle, a solvent extraction pump, a spiral pipe, a waste liquid barrel and a waste discharge pump. During use, an extraction solvent and a to-be-extracted sample are extracted through continuous circulation, the use amount of the solvent is reduced, the cost is low, the use is convenient, the problem of water removal of the extraction solvent is solved through the layering pipe, the collection bottle can be directly taken down, and the extraction solvent in the taken-down collection bottle can be directly fed to liquid chromatography, gas chromatography and other analytical instruments; therefore, the time for concentrating the extraction solvent is saved, errors caused in the extraction solvent transfer process are reduced, and the method has great practical value for extraction of small-batch samples.

The invention provides a method for extracting beta-carotene from Dunaliella salina by utilizing subcritical fluid. The method comprises the following steps: I, processing the Dunaliella salina to prepare Dunaliella salina granules; II, fill kettle with granules the Dunaliella salina granules into an extraction kettle, and introducing the subcritical fluid into the extraction kettle; then performing heating extraction under stirring to obtain extract and an extracted solid; III, introducing the extract into a separation kettle from the extraction kettle for decompression separation to obtain beta-carotene extractum. According to the method provided by the invention, a subcritical fluid extraction method is applied to extracting the beta-carotene of the Dunaliella salina, oxidation loss of the natural beta-carotene is reduced by low-temperature continuous counterflow extraction and low-temperature separation, and the yield is greatly increased; moreover, the safety problem of solvent residue is solved by the low-temperature separation, meanwhile, extraction cost is greatly reduced, and industrial production is easy; a brand-new way is opened for extracting the natural beta-carotene extractum from the Dunaliella salina by the method provided by the invention.

The invention discloses a dynamic detection method for a mine mining-induced fracture. The difficulty and blindness of gas drainage level position gives rise to problems that the level position of the gas drainage borehole arrangement is too high, the mining-induced fracture is underdeveloped, the gas drainage difficulty is big and the efficiency is low; the excessive lower level position of the gas drainage borehole arrangement easily gives rise to problems that a working surface seriously leaks wind, the normal running of a mine ventilation system is affected, the stability of the rock stratum is bad, and the effective gas drainage time is short. The method comprises the following steps of: detecting positions, parameters and numbers of boreholes by design; constructing before mining a stopping line and detecting the boreholes, carrying out the water leakage detection and recording data; taking a vertical height as a standard to normalize detection data, forecasting the development height of the mining-induced fracture after different mining times. The method can improve conditions of blind hole arrangement, short service life and low efficiency aiming at high position gas mining, increases the reasonableness of the hole arrangement and prolongs the mining time; and the method is beneficial to the scientific formulation of an under-water-body mining system, reduces the possibility of water outgoing of the water body, reduces the cost of coal mining and gas mining and improves the economic efficiency.

The invention relates to a subcritical continuous walnut oil extraction method and an extraction tank group. The method comprises the following steps: (1), preprocessing; (2) extraction; and (3) oil processing. According to the method and the extraction tank group, the characteristics and nutritional ingredients of oil of target products can be kept without loss; after the extraction, the residualoil of meal can be reduced to 1% and protein in the meal is not changed; in the extraction process, the recovered solvent can be recycled; and the extraction tank is capable of effectively solving the problems that the extraction rate is low, the extraction frequency is increased and the extraction time is long as all the materials are stacked in the extraction tank in traditional using. According to the method and the extraction tank group, the nutrient loss caused by complex process of crude oil refining and high temperature is avoided. The method and the extraction tank group are short inproduction period, low in cost, green and safe, mild in reaction, free of toxic and / or side effects and suitable for large-scale continuous production. According to the method and the extraction tankgroup, the oil and degreased meals extracted from walnut oilseed meals can be directly applied to the field of functional foods and cosmetics.

The invention discloses a tea leaf extraction cup. The tea leaf extraction cup comprises a cup body, a cup bottom for sealing the bottom of the cup body and a sealing cover for sealing an opening endof the cup body; a ventilation pipe is arranged on the side wall of the cup body, an air inlet of the ventilation pipe is formed in the opening end of the cup body, and an air outlet is close to the cup bottom. According to the tea leaf extraction cup, the type of tea leaves can be conveniently identified by an identifying device, the extraction speed of the tea leaves during soaking can also be increased, and thus the cup is very convenient to use.

The invention discloses a method for extracting isoquercitrin from Desmodium, comprising the following steps: 1) Cleaning Desmodium, drying, pulverizing with a pulverizer, and sieving; 2) Subcritical water extraction : Put the processed raw materials in the extraction kettle, add hydroxyethyl cellulose equivalent to 0.001 parts by weight of the raw materials, inject deoxygenated deionized water into the kettle, extract the temperature at 185‑200 ° C, the pressure is 8‑10 Mpa, and the extraction time is 0.5 ‑1.0h, extract Desmodium, the extraction is completed, the pressure is released, the extract flows into the collection tank and cooled to room temperature, and the extract is obtained; 3) Purification: the extract obtained in step 2) is concentrated, and the column is carried out through a macroporous resin Chromatography, eluting with 50% v / v ethanol, the eluate was obtained, concentrated and dried to obtain the finished product.

The invention discloses traditional Chinese medicine purification equipment which comprises an extraction tank with a feeding port in the top face, a separation barrel is arranged on the inner bottom face of the extraction tank, a heating wire is embedded in the inner wall of the separation barrel, the separation barrel divides the interior of the extraction tank into an inner cavity and an outer cavity, a connecting groove is formed in the inner bottom face of the extraction tank, and the connecting groove communicates with the inner cavity and the outer cavity; an opening and closing assembly is arranged in the connecting groove, a filtering placement frame is arranged in the separation barrel, a filtering placement frame is in sealed insertion connection with the separation barrel, the filtering placement frame is detachably connected with the opening and closing assembly, and an ultrafiltration membrane is detachably connected to the top surface of the filtering placement frame; a sealing cover is arranged at a feeding hole of the extraction tank, a feeding channel penetrates through the sealing cover, a grinding tank is arranged on the sealing cover, and a discharging hole of the grinding tank is over against the feeding channel; the extraction tank is communicated with a filter, and an outlet of the filter is communicated with an evaporation concentration tank. By adopting the arrangement, the traditional Chinese medicine purification equipment has the beneficial effects that the extraction time can be shortened, traditional Chinese medicine extraction liquid with proper concentration can be obtained, and medicine residues can be conveniently cleaned.

The invention discloses a multiple-magnetron type large-capacity microwave-assisted extraction machine and a microwave-assisted extraction method thereof, belonging to the field of biological raw material extraction equipment and an extraction method. The multiple-magnetron type large-capacity microwave-assisted extraction machine comprises a rack, a transmission device, a microwave tank, a microwave device, an air-entrapping device, a rotor device, a discharging device and a control device, wherein a plurality of magnetron installing holes uniformly and equidistantly distributed are formed in the wall of the microwave tank; the microwave device comprises a plurality of high-frequency magnetrons which are uniformly and equidistantly arranged on the wall of the microwave tank, and the high-frequency magnetrons are connected with an external power source; the air-entrapping device comprises a plurality of compressed air inlets formed in the wall of the microwave tank, a compressed air input pipeline and a plurality of electromagnetic valves; the rotor device comprises a rotating shaft and a plurality of stirring wings which are fixed on the rotating shaft and form certain crossing angles with the rotating shaft. The multiple-magnetron type large-capacity microwave-assisted extraction machine has the advantages that feed liquid in the microwave tank continuously runs and interchanges, an extractive is uniformly subjected to the action of an electromagnetic field to be heated, the extraction rate is increased, and the extraction time is shortened.