18results about How to "Increase extraction rate" patented technology

The invention relates to an electrode material for lithium extraction, a preparation method of the electrode material, a lithium extraction electrode and a lithium extraction system, belongs to the field of salt lake lithium extraction, and solves at least one of the problems of fast capacity fading, relatively low overall lithium extraction efficiency and short service life of a lithium extraction electrode for an alkaline solution in the prior art. A preparation method of an electrode material for lithium extraction comprises the following steps: mixing an electrode active material with a rare earth salt solution, and forming a phosphate rare earth layer on the surface of the electrode active material in an in-situ coating manner; the electrode active material comprises lithium iron phosphate and a doped derivative thereof. When the preparation method, the obtained electrode material, the lithium extraction electrode and the lithium extraction system are applied to lithium extraction of salt lake brine, especially alkaline brine, at least one of the cycle performance, the lithium extraction efficiency and the service life is remarkably improved.

The utility model discloses a non-pure aqueous solution hydrogen production and solid salt co-production system, which belongs to the field of electrochemistry and comprises a non-pure aqueous solution hydrogen production subsystem and a salt crystallization separation subsystem which are connected with each other. A non-pure water solution mass transfer device is arranged in a salt crystallization separation cabin of the salt crystallization separation subsystem, a non-pure water solution inlet and a pure water vapor outlet are formed in the salt crystallization separation cabin, and the non-pure water solution inlet is connected with a first valve; a solid salt outlet is formed in the solid-liquid separator; a second valve is arranged between the salt crystal separation cabin and the solid-liquid separator; the non-pure water solution mass transfer device comprises a non-pure water solution mass transfer unit, and a waterproof breathable layer is attached to the surface of the non-pure water solution mass transfer unit. The device disclosed by the utility model can fundamentally solve the problems of failure of an ion exchange membrane, inactivation of a catalyst, generation of alkaline precipitate and toxic gas and the like caused by complex ion components, and achieves double-effect utilization of energy regeneration and resource utilization of non-pure water solution.

This utility model discloses a rapid extraction device for pesticide residues in food, belonging to the field of pesticide extraction technology. It includes a liquid extraction tank, with a filter screen fixedly installed in the middle of the tank's interior. A base plate is fixedly installed below the filter screen inside the tank. A rotating plate is rotatably mounted at the bottom of the tank via bearings. In this rapid extraction device, liquid containing pesticide residues flows through the filter screen to the top of the base plate. Rotating the rotating plate causes a limiting slider to slide from one end of a limiting groove to the other. At this time, the mounting block disengages from the positioning hole at one end of the limiting groove and slides on the surface of the extraction tank, compressing a return spring. When the positioning post aligns with the positioning holes at both ends of the limiting groove, the return spring rebounds, pushing the positioning post into the positioning hole, making the rotating plate less prone to rotation. At this point, the rotating plate and the rectangular groove on the base plate coincide, allowing the filtrate to flow down from the rectangular groove, thus controlling the discharge of the filtrate.

The utility model belongs to the technical field of barley malt extraction, and particularly relates to a double-chamber receiving tank for barley malt extraction, which comprises a storage cavity, the inner wall of the storage cavity is fixedly connected with two partition plates, the left sides of the two partition plates are solid cavities, the right sides of the two partition plates are liquid cavities, and a supporting plate is fixedly connected between the two partition plates. A water pump is fixedly installed on the top face of the supporting plate, a connecting pipe is fixedly connected to the side wall of the partition plate on the left side, a hose is assembled at the end, located in the fixing cavity, of the connecting pipe, a coarse filtering assembly is arranged at the other end of the hose, and a fine filtering assembly is arranged between the connecting pipe and the water inlet end of the water pump. The water outlet end of the water pump is fixedly connected with a water outlet pipe, the water outlet pipe penetrates through the right partition plate, and cover plates are arranged on the top faces of the two partition plates. According to the utility model, the receiving tank can be arranged into double chambers, so that liquid generated by solid residues can be conveniently separated and filtered in time.

The invention relates to the technical field of polygonatum sibiricum polysaccharide extraction, in particular to a polygonatum sibiricum homogeneous polysaccharide subcritical water extraction method and application, and the method comprises the following steps: crushing polygonatum sibiricum, adding a degreasing agent for treatment, and filtering; adding an ammonia water-ethanol solution, performing pretreatment, adding cellulase and hemicellulase for dissolving, and performing centrifugal separation to obtain filtrate and rhizoma polygonati residues; carrying out glycerol modified subcritical water extraction on the polygonatum sibiricum residues to obtain extract liquor; mixing the filtrate and the extract liquor, performing alcohol precipitation, centrifugation, freeze drying, dissolving with distilled water, loading a sample to an anionic cellulose chromatographic column, eluting with distilled water, further purifying with a gel chromatographic column, and eluting with a NaCl solution to obtain the polygonatum homogeneous polysaccharide. According to the method, a specific degreasing mode is combined with enzyme dissolution and subcritical water extraction, so that the extraction rate of the polygonatum sibiricum homogeneous polysaccharide is increased, impurities can be reduced, harmful substances are not used in the extraction process, and the prepared polygonatum sibiricum homogeneous polysaccharide is suitable for the fields of high-end health care products and medicines.

The utility model discloses an automobile door emergency unlocking handle die which comprises a base, and a cooling box is fixedly arranged in the middle of the upper end of the base. The cooling cavity is formed in the cooling box, a fixed mold is arranged in the cooling cavity, three fixed mold grooves are formed in the upper end of the interior of the fixed mold, the fixed mold grooves are distributed at equal intervals, and cooling holes are formed in the positions, located at the front ends and the rear ends of the fixed mold grooves, of the interior of the fixed mold. And demolding is difficult after the handle is manufactured.

This utility model belongs to the field of evidence extraction technology and discloses a device for extracting combustion accelerants from combustion residues. It includes a base plate, on which a water bath heating chamber, a vacuum suction device, and a controller are mounted. A sealed chamber is installed inside the water bath heating chamber. A one-way air inlet valve is located at the end of an air inlet pipe on one side of the sealed chamber, and a one-way exhaust valve on the other side of the sealed chamber is connected to the vacuum suction device via a flexible hose. An activated carbon filter is installed in a filter assembly located in the middle of the flexible hose. Water bath heating ensures more uniform heating of the sealed chamber, which is beneficial for the decomposition of combustion accelerants in the combustion residues. The vacuum suction device reduces the air pressure inside the sealed chamber, lowers the volatilization and decomposition temperature of the combustion accelerant, and increases the extraction rate of the device. Under the action of the vacuum suction device, substances volatilized from the residues are discharged from the sealed chamber and adsorbed by the activated carbon filter, thereby collecting more combustion accelerant substances and making the extraction effect of the device more ideal.

The present invention relates to a method for recovering rare earth from fluorinated rare earth solid waste, the method comprising the following steps: (1) ball milling mixed fluorinated rare earth solid waste, a conversion agent and a solvent, the obtained ball milled slurry is sequentially subjected to water leaching treatment and solid-liquid separation to obtain a fluorine-containing filtrate and a water leaching residue; (2) the water leaching residue obtained in step (1) is subjected to acid leaching treatment to obtain an acid leaching liquid and an acid leaching residue, the obtained acid leaching liquid is subjected to post-treatment to obtain a rare earth oxide; the fluorine-containing filtrate obtained in step (1) is mixed with an acid solution, and a fluorine-containing compound and a solvent are obtained by evaporation and crystallization, and the obtained solvent is recycled to step (1). The present invention improves the reaction activity of raw materials through the mechanochemical action of ball milling, promotes the efficient conversion of fluorinated rare earth into rare earth hydroxide, thereby achieving complete recovery of fluorine and rare earth, and the method has the characteristics of low cost and energy consumption, green environmental protection, etc.

The utility model discloses a waste bill crushing device which comprises a crushing cylinder, a bill inlet is formed in the top of the crushing cylinder, a crushing mechanism is arranged in the crushing cylinder, a compression cylinder is fixedly connected to the bottom of the crushing mechanism, a compression mechanism is arranged in the compression cylinder, and a water tank is fixedly connected to the bottom of the compression cylinder. A fixing frame is fixedly connected to the front face of the water tank, a control device is fixedly connected into the fixing frame, a sealing mechanism is arranged at an outlet of the compression cylinder, the bottom of the water tank communicates with a drainage pipe, and a valve is arranged in the drainage pipe. According to the utility model, bills can be quickly crushed through the crushing mechanism, ink marks on the crushed bills are soaked and extracted through the ink extracting solution, important information leakage can be avoided, soaked scraps can be compressed through the compression mechanism, meanwhile, the ink extracting solution is recycled, the utilization rate of the ink extracting solution can be improved, and the service life of the ink extracting solution is prolonged. And meanwhile, waste paper scraps are easier to treat.

The invention discloses a preparation method of a tobacco extract, the tobacco extract and a heated cigarette, and the preparation method comprises the following steps: taking a tobacco raw material, and crushing to obtain tobacco powder; carrying out alcoholysis soaking treatment on the tobacco powder to obtain a decomposition product; and performing pulse extraction treatment on the decomposition product to obtain the tobacco extract. According to the method, high-voltage pulse extraction is adopted, effective components in tobacco leaves are greatly reserved, and the prepared tobacco extract is applied to heating cigarettes and has the application effect of increasing the original fragrance and satisfaction of the tobaccos.

The present invention relates to the field of data processing technology, and in particular to an electronic contract maintenance management method and system based on big data, comprising the following steps: collecting electronic contract metadata in a data source, and sequentially cleaning, converting, compressing, merging, extracting features, and backing up the electronic contract metadata; performing data analysis based on the extracted features, and collating the analysis results to output electronic contract statistical data; when it is determined that the stability of maintenance management does not meet the requirements, adjusting the collection frequency of the electronic contract metadata; when it is determined that the validity of the storage space does not meet the requirements, determining the compression ratio of the electronic contract metadata; and re-determining the compression ratio of the electronic contract metadata based on the byte loss rate of the electronic contract metadata. The present invention achieves an improvement in the stability of maintenance management.

The invention discloses a linkage switching valve. The linkage switching valve comprises a first channel and a second channel which communicate with each other; and valve plugs which can be impacted by water flow to move towards the inlet or the outlet are respectively arranged in the two channels. The invention further discloses a feeding device which comprises a first feeding water path and a second feeding water path which are respectively used for extracting the first washing additive and the second washing additive; the main water inlet path is used for feeding washing additive mixed liquid outwards and / or feeding water; an outlet of the first putting water path and an outlet of the second putting water path are communicated with an inlet of a first channel and an inlet of a second channel of the linkage switching valve in a one-to-one correspondence manner; outlets of the two channels of the linkage switching valve are communicated with the main water inlet way. According to the invention, different feeding water paths are communicated with the main water inlet water path through the linkage switching valve, so that the purpose of automatically closing the outlet of the corresponding water path when any feeding water path extracts the washing additive is achieved, and the remarkable technical progress of improving the extraction rate of the washing additive is further achieved.

The utility model discloses an automatic opening and closing's high temperature test box, including anticreep damage subassembly, anticreep damage subassembly includes C shaped groove and first spring, the C shaped groove is seted up in high temperature test box main part middle part inner wall, the both sides fixed connection first spring one end of shelf, the C shaped groove is movably connected shelf and first spring, the both ends distance high temperature test box main part place C shaped groove inner wall clearance of shelf is three centimeters, the rear end distance high temperature test box main part place C shaped groove inner wall clearance of shelf is four centimeters, the C shaped groove height is the thickness of shelf's twice, the C shaped groove of setting up in the utility model can make the clearance between the outside of shelf and high temperature test box main part, and then can place the deformation part of the expansion when shelf heating, avoid the bending, warping or with the stress conflict phenomenon of cabinet frame of shelf, and then guarantee the service life of shelf.

The present disclosure provides a method for stimulating search based on real-time video content, the method comprising: obtaining a video clip of interest; according to the video clip of interest, querying from a cloud offline recognition database or extracting the video entity contained in the video clip of interest by using a local online recognition method; performing an associated search based on the obtained video entity to obtain a search result; and feeding back the search result to a user. The present disclosure also provides a system and a terminal device for stimulating search based on real-time video content.

The present invention belongs to the technical field of lithium battery recycling, and more specifically, relates to a method for efficiently extracting active lithium from the negative electrode of a waste lithium battery. First, a solvent capable of dissolving the SEI film is used to treat the SEI film on the surface of the negative electrode of the lithium battery, so that holes or solubility damage appear in the SEI film; then, a weakly polar solvent is used to dissolve polycyclic aromatic hydrocarbons to obtain a recovery liquid to soak the negative electrode of the lithium battery with the damaged SEI film, and the lithium in the negative electrode of the lithium battery is extracted by using the electron-withdrawing effect of the large π bond of the polycyclic aromatic hydrocarbons. Compared with the use of a strong polar organic solvent to dissolve polycyclic aromatic hydrocarbons, the present invention uses a weakly polar organic solvent to dissolve the polycyclic aromatic hydrocarbons to extract lithium. Due to the weak Lewis alkalinity of the solvent, the electron-withdrawing effect of the large π bond of the polycyclic aromatic hydrocarbons can be retained, thereby ensuring that it has a strong interaction with the lithium element in the negative electrode, which significantly improves the lithium leaching rate.

The invention relates to the field of computer vision, in particular to a cross-modal building image extraction method and device based on a multi-feature synergistic effect, electronic equipment and a medium. The method comprises the following steps: constructing a single building instance segmentation network based on a Mask RCNN framework, and adding a direction parameter to a position prediction branch of the network to obtain a building image; then, a receptive field module is embedded into a segmentation branch, Shuffle Net is adopted as a network trunk to extract building features, and ROI-Align is utilized to obtain a feature map of a building detection frame; performing vertex prediction on the building contour by using a long-short term memory network based on an attention mechanism; and then based on the generative adversarial network, building transformation detection is completed by adopting an end-to-end double-branch structure detection method. According to the invention, the precision of cross-modal building image extraction can be improved.

The invention provides a Fe3O4 / GO / CS magnetic nano composite material and application thereof in detecting the content of danofloxacin in swine urine, and belongs to the technical field of antibiotic detection. The Fe3O4 / GO / CS magnetic nano composite material is prepared from Fe3O4, graphene oxide and chitosan, and the Fe3O4 / GO / CS magnetic nano composite material is prepared from Fe3O4, graphene oxide and chitosan. The detection method comprises the following steps: dispersing Fe3O4 / GO / CS into a to-be-detected sample solution, carrying out magnetic solid-phase extraction to obtain a to-be-analyzed sample, and detecting the content of danofloxacin in the to-be-analyzed sample by adopting HPLC-FLD. According to the Fe3O4 / GO / CS magnetic nano composite material provided by the invention, the pretreatment process of a sample is simplified, the sample extraction rate is improved, and the detection method has relatively high sensitivity and accuracy and is suitable for detecting danofloxacin in a pig urine sample.

The utility model discloses acid discharge equipment and a battery piece production system, an air exhaust mechanism is located at a first outlet end of an acid discharge pipeline along a first direction and is connected with the first outlet end, so that air in the acid discharge pipeline can be exhausted, one end of a transmission pipeline is connected with a diffusion furnace, and the other end of the transmission pipeline is connected with a first adapter; the second outlet end of the first adapter at least partially extends into the first acid discharge hole in the side wall of the acid discharge pipeline and is provided with a diagonal plane which forms an included angle with the first direction, and the diagonal plane is arranged towards the first outlet end. Thus, the second outlet end is provided with the diagonal plane facing the gas extraction mechanism, and after gas enters the acid discharge pipeline, the diagonal plane can change the flowing direction of the gas, so that the gas can be better extracted by the gas extraction mechanism, and the extraction rate of the gas exhausted by the second outlet end by the gas extraction mechanism can be improved; therefore, the condition that the acid discharge pipeline is blocked due to crystallization generated by too slow discharge of the acid gas can be avoided.