34results about How to "No impurities" patented technology

The invention belongs to the technical field of meat processing, and particularly relates to raw beef cleaning equipment which comprises a cleaning mechanism and a spraying mechanism, the cleaning mechanism comprises a first rack, a first conveying belt, a second conveying belt and a rubbing mechanism, the first conveying belt and the second conveying belt are arranged on the first rack, and the second conveying belt is arranged on the second rack; the rubbing mechanism is installed in the first rack, the spraying mechanism comprises a second rack, a third conveying belt, a meat hanging mechanism, a water distribution pipe and a spray head, the first rack is fixedly connected with the second rack, the second conveying belt extends into the second rack, the meat hanging mechanism is arranged in the second rack, and the second conveying belt extends into the second rack. The water distribution pipe is fixedly connected to the inner wall of the second rack, a spray head is arranged on the water distribution pipe, the third conveying belt is arranged on the second rack, the rubbing mechanism can rub and clean the raw beef on the premise that the raw beef is not damaged, blood clots, dirt, germs and the like on the surface layer of the raw beef can be effectively removed, and the raw beef can be cleaned; and blood and blood clots in the raw beef can be removed.

The invention relates to the technical field of metal materials, and discloses an Al-Zn heat-treatment-free aluminum alloy and a preparation method and application thereof. The Al-Zn series heat treatment-free aluminum alloy is prepared from the following components in percentage by mass: 8.0 percent to 18.0 percent of Zn, 4.0 percent to 9.0 percent of Si, 0.5 percent to 4.0 percent of Cu, 0.3 percent to 1.2 percent of Mn, 0.1 percent to 0.5 percent of Zr, 0.1 percent to 0.9 percent of V, 0.1 percent to 0.4 percent of Er, 0.05 percent to 0.6 percent of Sr, 1.0 percent to 3.0 percent of TiC / TiB2 and the balance of Al and inevitable impurities. The Al-Zn heat-treatment-free aluminum alloy provided by the invention is compact in structure, fine in crystal grain, uniform in solute element distribution and excellent in mechanical property, and can meet the application requirements of the fields of automobiles and spaceflight on aluminum alloy materials.

The invention belongs to the technical field of spot welding machines, and particularly relates to hardware fitting manufacturing equipment which comprises a bottom plate and a rack arranged on the upper side wall of the bottom plate, the rear side wall of the rack is fixedly connected with an operation table, a PLC and a buzzer, and the front side wall of the rack is fixedly connected with a supporting seat. A supporting seat is fixedly connected to the left side wall of the rack, an air cylinder is fixedly connected to the lower side wall of the supporting seat, a connecting seat is fixedly connected to the upper side wall of the bottom plate, electrode seats are fixedly connected to the upper side wall of the connecting seat and the moving end of the air cylinder, electrode bodies are inserted into the electrode seats, and the placing plate is fixedly connected with the left side wall of the rack. When the spot welding machine works for a long time and pits are formed in the end face of the electrode due to pressure friction and local overheating, the situation can be automatically detected, repairing is conducted in time, and therefore the problem that the welding quality of the spot welding machine is affected due to the fact that the electrode with the pits is continuously used, and the strength of welding spots is not uniform is solved.

The invention discloses an optical machine module of a projector, the projector and an assembling method of the optical machine module. The optical machine module comprises an internal circulation heat dissipation part and an external heat exchange part. A closed cavity is formed in an inner chamber of the inner circulation heat dissipation part, the closed cavity is arranged to be a curved air channel, the curved air channel is combined end to end to form a circulation channel, a power fan module is installed at one node of the circulation channel, and air in the circulation channel can be accelerated to circulate after the power fan module is powered on. An LCD screen module, heat insulation glass, a front Fresnel lens and a rear Fresnel lens are arranged in the circulation channel; the outer heat exchange part and the inner circulation heat dissipation part are integrated or fixed in an attached mode to form a heat exchange structure. According to the invention, the LCD screen module and the heat insulation glass are packaged in the circulation channel, the circulation channel is dustless, and the optical machine module is clear in imaging and free of impurities. The ray machine module is in modular design, the assembling efficiency of the ray machine module, the lens group and the light source group is high, and the yield is improved.

The invention discloses a long seedling rope kelp hanging, airing, tiling and drying system and method, and the system comprises a long seedling rope traction device which is used for pulling a kelp seedling rope, so that the kelp on the kelp seedling rope sequentially passes through a kelp roller flushing device, a kelp tip cutting device, a two-side distribution device, an adjustable net laying frame and a finished kelp cutting device; the two-side distributing device is used for sequentially distributing the passing kelp to the two sides, so that the kelp on the kelp seedling rope is alternately erected on the two sides of the adjustable net laying frame; the adjustable net laying frame comprises two net plates which are symmetrically distributed on the two sides of the ridge line of the adjustable net laying frame. The kelp spreading device is used for spreading kelp in the airing process. According to the system, the kelp seedling ropes are alternately erected on the two sides of the adjustable net laying frame, the adjacent kelps are located on the two sides of the adjustable net laying frame respectively, in the airing process, overlapping and shielding of the adjacent kelps on the seedling ropes can be reduced, the kelps can be unfolded more evenly, the leaf curling phenomenon is reduced, water evaporation is accelerated, and the drying time is shortened.

The utility model discloses a brake disc casting mold which comprises a pouring cup and a mold core, the transverse pouring gates comprise the first transverse pouring gate and the second transverse pouring gate, the first transverse pouring gate is connected with the pouring cup and extends outwards in the first direction, the second transverse pouring gate is connected with the pouring cup and extends outwards in the second direction, and a first included angle space is formed between the first transverse pouring gate and the second transverse pouring gate; the cavity is provided with a first inlet and a second inlet, and the first inlet and the second inlet are symmetrically distributed on the two sides of the cavity relative to the center of the cavity; wherein the mold cavity comprises a first mold cavity, the first mold cavity is arranged in the first included angle space, the first cross gate is connected to a first inlet of the first mold cavity through the first flow gate, and the second cross gate is connected to a second inlet of the first mold cavity through the second flow gate. The brake disc casting mold is excellent and stable in mechanical property, the brake performance of a whole vehicle can be improved, meanwhile, defective products can be reduced, and the production and management cost of an enterprise is reduced.

This utility model provides an intelligent multi-stage spray sterilization device with self-cleaning function, belonging to the field of bayberry spray sterilization technology, to solve the problem that the fixed nozzles cannot be adjusted according to the size and surface contamination of the bayberries; it includes a mesh belt conveyor; side baffles are fixedly installed on both sides of the top of the mesh belt conveyor; a sterilization mechanism is fixedly installed between the two sets of side baffles, and a spray device is fixedly installed between the top of the two sets of side baffles; the spray device is set in four places, and a flipping mechanism is set between the two spray devices; through the coordinated action of components such as double-headed screws, sliding seats, drive plates and load-bearing seats, the operator can accurately adjust the position of the spray pipes and nozzles according to the actual size of the bayberries; at the same time, an infrared distance sensor can monitor the distance between the nozzles and the bayberries, and the control module automatically adjusts the opening of the solenoid valve according to the preset program to control the spray volume.

This invention discloses high-entropy rare-earth silicate ceramic nanopowders, their preparation methods, and applications. The preparation method of the high-entropy rare-earth silicate ceramic nanopowders of this invention includes the following steps: 1) dissolving rare-earth oxide powder in an acid solution to prepare a rare-earth salt solution, then adding urea and silica powder and performing a gelation reaction to obtain a gel; 2) igniting the gel for combustion synthesis, grinding, and obtaining a precursor powder; 3) calcining the precursor powder to obtain the high-entropy rare-earth silicate ceramic nanopowders. The high-entropy rare-earth silicate ceramic nanopowders of this invention possess excellent characteristics such as fine particle size, uniform elemental distribution, large component space, and absence of impurities. Furthermore, its preparation method has advantages such as fast synthesis speed, simple equipment, simple and controllable process, and low industrialization cost, making it suitable for application in hot-end components of aerospace engines and possessing very broad application prospects.

The present application discloses a method for preparing a tin-based oxyfluoride compound, comprising the following steps: S1: mixing raw materials SnO, SnF2, TiO2 and Nb2O5, adding ethanol or deionized water, and grinding evenly to obtain a raw material mixture; S2: adding the raw material mixture to a quartz glass tube containing a corundum tube, placing the raw material mixture in the corundum tube, sealing the quartz glass tube, and then placing the sealed quartz glass tube in a muffle furnace at 500-800°C for calcination for 5-10 hours; S3: subjecting the product of step S2 to molten salt treatment to obtain the tin-based oxyfluoride compound. The tin-based oxyfluoride compound material synthesized by the method of the embodiment of the present invention has fewer defects and improved crystallinity, which effectively improves its photocatalytic reaction activity.

The invention discloses stevia fiber healthy sugar suitable for diabetics to eat and a preparation method of the stevia fiber healthy sugar, and relates to the technical field of food. The healthy sugar disclosed by the invention is prepared from the following raw materials in parts by weight: 1-30 parts of stevioside and 70-99 parts of dietary fibers. An element for enhancing sweetness comes from a stevia rebaudiana aqueous extract stevioside, the natural dietary fiber is used as a carrier to simulate the overall characteristics of cane sugar, and the use of the carrier creates a synergistic effect in taste, so that the product is more like cane sugar, and the bad flavor of stevioside is also masked; the bad flavor of stevioside is masked by adopting the natural method, so that the quality of the product is very stable, and the shelf life can be up to 24 months; meanwhile, the dietary fiber in the product has the effects of reducing blood sugar, helping digestion, prebiotics and the like, and is very beneficial to the treatment of patients with hyperglycemia and diabetes mellitus.

The utility model provides a basalt fiber production temperature control system, and belongs to the field of basalt fiber production, the basalt fiber production temperature control system comprises a PLC controller, a power regulator, a thermocouple, a smelting furnace and a wire drawing bushing plate, the smelting furnace comprises a plurality of heating zones, each heating zone is provided with a plurality of electrodes, the electrodes are electrically connected with a current transformer, the current transformer is electrically connected with an electric smelting transformer, and the electric smelting transformer is electrically connected with the thermocouple. The electric smelting transformer is electrically connected with the first power regulator, the first power regulator is electrically connected with the PLC, the first thermocouple is electrically connected with the PLC, and the first thermocouple is inserted into basalt melt in the smelting furnace; the second power regulator is electrically connected with the PLC, the second power regulator is electrically connected with a bushing plate transformer, the bushing plate transformer is electrically connected with the wire drawing bushing plate, the second thermocouple is electrically connected with the PLC, and the second thermocouple is installed on the wire drawing bushing plate. According to the temperature control system, the basalt melt is heated more uniformly, and the temperature of the electrode is controlled by controlling the current, so that the temperature of the basalt melt is controlled.

The present invention belongs to the technical field of semiconductor materials, and discloses a porous single-crystal zinc oxide semiconductor material with a self-supporting structure, a preparation method and an application thereof. A zinc-sulfur compound single-crystal substrate is used as a precursor mother crystal, and the single-crystal substrate undergoes a solid-solid phase transition from an external lattice to an internal lattice under medium-high temperature conditions, and non-zinc atoms escape; after the escape, the remaining zinc atoms and oxygen atoms undergo secondary crystallization to form a porous single-crystal zinc oxide material with a self-supporting structure. The porous single-crystal zinc oxide semiconductor material with a self-supporting structure prepared by the present invention has pores of 20 nm to 800 nm, and a pore structure is introduced inside the single-crystal structure, and the porosity and structural coherence are combined, thereby greatly improving the performance of the semiconductor material of the present invention as a zinc oxide device.

The invention discloses an aluminum magnesium alloy production process which comprises the following steps: S1, preparing molten aluminum for later use: storing the molten aluminum into a molten aluminum storage furnace for later use; s2, aluminum and magnesium neutralization is conducted, specifically, the aluminum water in the aluminum water storage furnace is taken and injected into a neutralization furnace, and magnesium is added for mixing; s3, slag is removed, waste gas is discharged, slag in the aluminum-magnesium mixture is removed, and the waste gas is purified through a waste gas treatment device and then discharged into the atmosphere; s4, drawing forming is conducted, S5, drawing treatment is conducted, and the formed aluminum-magnesium forming material is subjected to drawing forming through a drawing treatment process; s6, tempering treatment is conducted, specifically, the material obtained after drawing forming is subjected to tempering treatment, and the stability of the material is enhanced; and S7, packaging and warehousing are conducted, in the waste residue treatment process, composite residues are added for multiple times, then the residues are scraped, residues and oxides in the solution are thoroughly removed, the aluminum magnesium alloy material obtained after solution cooling forming is free of impurities, and the quality of the aluminum magnesium alloy is effectively improved.

This invention provides a method for preparing 1,2-propanediol and its application. The method includes: step (1): in the presence of an acidic catalyst and water, ring-opening of a first portion of propylene oxide to obtain an acid-catalyzed reaction solution containing 1,2-propanediol; step (2): in the presence of an alkaline catalyst and water, ring-opening of a second portion of propylene oxide to obtain an alkaline-catalyzed reaction solution containing 1,2-propanediol; step (3): mixing the obtained acid-catalyzed reaction solution and the alkaline-catalyzed reaction solution for a neutralization reaction to obtain a mixture containing 1,2-propanediol; wherein, the molar ratio of the first portion of propylene oxide to water in step (1) and the molar ratio of the second portion of propylene oxide to water in step (1) are each independently 1:1-5; using the method of this invention to prepare 1,2-propanediol requires only a lower water ratio to obtain a higher propylene oxide conversion rate and 1,2-propanediol content, and the wastewater volume is lower and the color is colorless after the reaction.

The utility model discloses an air compressor and an oil seal return oil filtering device, relates to the technical field of compressors, and aims to solve the problem that the oil seal needs to be disassembled for maintenance when leaking oil, the device comprises an oil return channel communicated with the lowest end of the oil seal, and the input end of an oil filtering device is communicated with the oil return channel. Oil leaked from the oil seal is introduced into the oil filter device, the oil filter device is used for filtering and storing the oil, the oil led out from the oil seal is filtered thoroughly through the oil filter device, the output end of the oil filter device is communicated with the air inlet end of the air compressor main machine, the air inlet end is in a negative pressure state, and the oil filtered thoroughly through the oil filter device can be recycled to the air compressor main machine. The air filter device communicated with the air is arranged on the oil filter device, the air entering the oil filter device is filtered through the air filter device, so that the air entering the main machine of the air compressor does not contain impurities, the whole maintenance process can be realized without disassembling the air compressor, the maintenance cost is reduced, the disassembly and maintenance times are reduced, and the service life of the air compressor is prolonged.

The utility model provides a paperboard processing hot-pressing device which comprises a workbench, a connecting plate is arranged at the upper end of the workbench, a hot-pressing plate is slidably connected into the connecting plate through a sliding column, a first electric push rod is arranged at the upper end of the connecting plate, and the telescopic end of the first electric push rod is connected with the upper end of the hot-pressing plate. Limiting mechanisms are arranged on the left side and the right side of the connecting plate, a scraping brush cleaning mechanism is arranged in the workbench, and a supporting assembly is arranged at the lower end of the workbench. According to the hot-pressing device for paperboard processing, the automatic cleaning system can ensure that paperboards of each batch are not influenced by glue overflow in the hot-pressing process, the surface of a product is smooth and free of impurities, the product quality is improved, manual intervention is not needed for automatic cleaning, the stable production rhythm is favorably maintained, and the overall production efficiency is improved.

The invention relates to an electric cylinder comprehensive performance testing device, which comprises a mounting seat, an adapter block assembly, a digital display depth gauge, a reverse transmission push rod assembly, a magnetic powder brake, a torque sensor, a motor, a sealing plate, an air pressure protection grade testing assembly and a console, and is characterized in that two ends of a tested electric cylinder are respectively mounted on the mounting seat and the adapter block assembly; the two ends of the digital display depth gauge are connected with the switching block assembly and the reverse transmission push rod assembly respectively. The reverse transmission push rod assembly is connected with the torque sensor; the magnetic powder brake is connected with the torque sensor; and the sealing plate is arranged on the tested electric cylinder and the motor. Compared with the prior art, the device can test multiple performances of the electric cylinder at the same time; the torque sensor tests the torque between the reverse transmission push rod assembly and the magnetic powder brake; the air pressure protection grade test assembly is connected with different to-be-tested electric cylinders through the sealing plate, adjustment is not needed in each test, and the magnetic powder brake can provide stable output torque and provide constant load required by the electric cylinder thrust test.

This invention provides a (Hf,Zr,Ta,Ti)B2-SiC ceramic powder and its preparation method, belonging to the field of high-entropy boride ceramics technology. This invention uses excess B4C powder to ensure more complete reaction of the metal oxide powder, forming a single-phase (Hf,Zr,Ta,Ti)B2 ceramic powder without impurity formation. Using SiC powder as a filler phase further improves both the density and bulk density of the (Hf,Zr,Ta,Ti)B2-SiC ceramic powder. Spray granulation further enhances the flowability of the (Hf,Zr,Ta,Ti)B2-SiC ceramic powder, ensuring that the resulting (Hf,Zr,Ta,Ti)B2-SiC ceramic powder, when coated using plasma spraying technology, achieves a high density of the (Hf,Zr,Ta,Ti)B2-SiC ceramic coating.

The present invention relates to a tantalum carbide coating product and a preparation method, wherein a tantalum carbide coating is formed on the surface of a substrate by chemical vapor deposition using inorganic tantalum halides and olefins. The present invention can effectively enable the substrate to obtain excellent high temperature resistance, corrosion resistance, and friction resistance, and at the same time has low reaction temperature and fast deposition speed, is more suitable for industrial production, and can effectively control the overflow of impurity components in the substrate, improve surface finish, and improve the aesthetics of the product, and realize large-scale industrial production.

The invention relates to the technical field of food health care, and particularly discloses health-preserving health-care substitutional tea and a production method thereof, and the health-preserving health-care substitutional tea is prepared from the following raw materials in parts by weight: 10-15 parts of a qi-tonifying yin-benefiting medicine group, 5-10 parts of a blood-activating medicine group, 20-25 parts of a dampness-clearing medicine group, 30-40 parts of a qi-regulating medicine group, and 25-35 parts of a comprehensive conditioning medicine group. The comprehensive conditioning medicine group consists of gastrodia elata, semen brassicae junceae, cinnamon, endothelium corneum gigeriae galli, rose, rhizoma polygonati and malt; the five functional groups of tonifying qi and yin, activating blood, clearing damp, regulating qi and comprehensively conditioning are covered, various health requirements of people can be met, the production method is rigorous, each step from raw material purchasing to warehousing storage is strictly controlled, it is ensured that the raw materials are high in quality and free of impurities, and through precise functional classification, moderate smashing, reasonable mixing and strict sterilization and disinfection, the health-care food is prepared. The product quality, sanitation and safety are guaranteed, natural Chinese herbal medicines are adopted, no chemical additive is added, the side effect is low, the product stability is guaranteed through precise packaging and storage conditions, the product is suitable for a wide range of people, and a safe and effective health-preserving mode is provided for people.

The present invention relates to a method for preparing a tantalum carbide coating by using CVD, wherein a tantalum carbide coating is formed on a substrate surface by chemical vapor deposition using tantalum alkoxide, alkane and hydrogen. The present invention can effectively enable the substrate to obtain excellent high temperature resistance, corrosion resistance and friction resistance, and at the same time has the effect of effectively controlling the overflow of impurity components in the substrate, improving the surface finish and the aesthetics of the product, and realizes large-scale industrial production.

The utility model relates to gasoline detection technical field, concretely is a kind of gasoline oil sample detection device, including storage bottle, pivot, flexible hose, device lid and device main body, storage bottle outside fixed mounting has No. 3 threaded tube, device lid outside fixed mounting has No. 2 threaded tube, flexible hose outside fixed mounting has No. 1 threaded tube, No. 3 pivot outside fixed mounting has threaded fan blade, pivot outside fixed mounting has rotating counterweight, rotating counterweight outside is connected with gear assembly, the device design is by mechanical drive and can extract gasoline in the automobile fuel tank and carry out detection, so that it can ensure fuel quality, by the gasoline in the automobile fuel tank detection, can ensure that the quality of fuel meets relevant standards and requirements by the gasoline in the automobile fuel tank detection can prevent failure, avoid the engine failure caused thereby.

This invention discloses an automated PVB film precision cutting and lamination production line, relating to the field of laminated glass production technology. It includes a first transport structure, a second transport structure, a third transport structure, and a fourth transport structure. The first transport structure is equipped with a detection mechanism, an automatic alignment structure, and a defective product pushing mechanism. A first servo module is used to transport the upper glass sheet, and a second servo module is used to transport the precision-cut PVB film. These components, along with a lifting assembly and a suction cup assembly, achieve alignment and lamination with the lower glass sheet. The second transport structure has a laser heating end and is equipped with a laser precision cutting robot to enable on-site cutting and use of the PVB film. This automated PVB film precision cutting and lamination production line operates within a cleanroom, automatically aligning and positioning the glass, performing clean online precision cutting, and automating the entire lamination process. It solves the problems of low manual efficiency, easy shrinkage and deformation of the film, and poor cutting accuracy, saving on cleanroom equipment costs. It features a high degree of automation, stable lamination quality, and is suitable for large-scale, efficient production of PVB laminated glass.

The invention discloses a shrimp and crab type marine natural umami seasoning and a preparation method thereof, and belongs to the technical field of food processing. The method comprises the following steps: 1) preparing a suspension from shrimp and crab aquatic products, inoculating activated compound bacteria, and fermenting to obtain a fermented suspension; adding a compound enzyme into the fermentation turbid liquid, and carrying out enzymolysis, enzyme deactivation, filtration centrifugation and graded ultrafiltration to obtain supernate; (2) adsorbing amino acid by using a polyvinyl alcohol pre-membrane, compounding the pre-membrane subjected to saturated adsorption of the amino acid with a bottom membrane by using a cross-linking agent, performing electrostatic spinning to obtain an amino acid embedded electrostatic spinning membrane, and eluting the embedded amino acid to obtain an electrostatic spinning membrane containing amino acid holes; the supernate obtained in the third step is purified and then eluted, an eluted solution is obtained, and the seasoning is obtained after spray drying; the amino acid in the step 4 is selected from Ala, Asp, Asn, Glu and Gln. The obtained seasoning is high in sensitization reduction rate, sufficient in delicate flavor and free of fishy smell and peculiar smell.

The application discloses a controllable water-permeable solidified grouting material and a preparation method and application thereof, belongs to the technical field of geotechnical engineering foundation reinforcement and underground cavity filling, and aims to solve the technical problem that existing grouting materials are difficult to keep a certain solidified strength and accurately control the water permeability coefficient according to geological requirements to adapt to different hydrogeological environments. The controllable water-permeable solidified grouting material comprises, in weight parts, 45-55 parts of a main solidified base material, 8-18 parts of a water-permeable control system, and 25-35 parts of deionized water. The water-permeable control system comprises porous volcanic rock powder, lignin fiber and modified bentonite, and the mass ratio of the porous volcanic rock powder, the lignin fiber and the modified bentonite is 50:35:15. The porosity of the porous volcanic rock powder is 45%-55%, the length of the lignin fiber is 3 mm-6 mm, and the expansion rate of the modified bentonite is 150%-280%.

The invention relates to the field of auxiliary chemicals, in particular to the field of C08L2201 / 08, and particularly relates to an environment-friendly stabilizer for PVC (polyvinyl chloride) and a preparation method of the environment-friendly stabilizer. The environment-friendly stabilizer for PVC is prepared from the following raw materials: stearate, a lubricant, hydrotalcite, an antioxidant, a coupling agent, an auxiliary stabilizer and a filler. Wherein the hydrotalcite comprises CZ-380 and CZ-390, and the lubricant comprises oxidized wax and Fischer-Tropsch wax. The prepared environment-friendly stabilizer for PVC can significantly improve the weather resistance, temperature resistance and glossiness of a PVC product, and the actual use effect is excellent.

The invention relates to marking of micro-plastics, in particular to a method for marking fiber micro-plastics by using up-conversion nanoparticles (UCNPs) and application. The method specifically comprises the following steps: dispersing rare earth doped UCNPs and polyacrylonitrile (PAN) powder in a dispersion liquid to obtain a spinning solution, and marking the fiber micro-plastic with the up-conversion nanoparticles through an electrostatic spinning-high-speed roller system. The prepared labeled fiber micro-plastic has excellent up-conversion luminescence performance, interference of autofluorescence of biological tissue can be effectively reduced, and detection of distribution of the labeled fiber micro-plastic in a living body is achieved in combination with a time-gated imaging technology; the rare earth elements in the up-conversion nanoparticles can be used as element tags, and high-sensitivity quantitative analysis is carried out by using a plasma mass spectrometer; the up-conversion nano-particles are firmly embedded in the fiber micro-plastic through an electrostatic spinning technology, the stability of the marker is ensured, and the diameter of the fiber micro-plastic can be accurately regulated and controlled by adjusting the concentration of a spinning solution and the spinning voltage.

The present invention discloses a capillary self-priming electrolysis seawater hydrogen production device and method, which relates to the technical field of seawater electrolysis hydrogen production, including: an electrolysis water chamber, a cathode electrolysis component and an anode electrolysis component are arranged in the electrolysis water chamber, a hydrophilic porous diaphragm is clamped and arranged between the cathode catalytic electrode and the anode catalytic electrode, an electrolyte storage chamber is filled with electrolyte, and an extension of the hydrophilic porous diaphragm extends into the electrolyte in the electrolyte storage chamber; a seawater heat desalination chamber can transport normal temperature seawater to the cathode plate and the anode plate for heat exchange to form high temperature seawater, and the seawater heat desalination component desalinates part of the high temperature seawater and transports it to the electrolyte storage chamber, and discharges the rest of the high temperature seawater through a seawater outlet pipe. Mature alkaline electrolysis electrodes can be directly used, and the device integrates the seawater in-situ desalination and water electrolysis process, realizing the direct introduction of seawater into the electrolyzer for electrolytic hydrogen production.

The invention relates to the technical field of tea making, and discloses a sweet potato tip tea making method, which comprises the following steps: picking 1-2 cm of fresh sweet potato tips, cleaning, naturally withering for 6-10 hours, carrying out fixation for 3-4 minutes at 150-160 DEG C, spreading and cooling to room temperature, putting into a rolling machine, rolling for 25-30 minutes, frying for 5-6 minutes at 120-130 DEG C, re-rolling for 25-30 minutes, making into strips, baking for 3-4 hours in an oven at 50-60 DEG C until drying, taking out, spreading and cooling to room temperature, and packaging. The sweet potato tip tea is obtained. The method has the advantages that good appearance and internal texture of the sweet potato tip tea are guaranteed, the fixation effect is good, and the sweet potato tip tea has lasting fragrance.

The present application relates to the technical field of phosphogypsum production, and specifically discloses a method for preparing phosphogypsum, comprising the following steps: step (1), feeding the phosphogypsum quantitatively into a drying device by a feeder for preliminary drying at 150-180°C for 5-25 minutes to reduce the moisture in the phosphogypsum; step (2), sending the preliminarily dried phosphogypsum into a ball mill for grinding, and sieving the ground phosphogypsum powder through a sieve with a mesh diameter of 5-150 μm; step (3), sending the phosphogypsum powder into a calcining furnace through a conveyor belt for calcination to obtain relatively pure phosphogypsum. The purpose of this patent is to solve the problem of phosphogypsum agglomeration when removing impurities from calcined phosphogypsum.