223results about How to "Uniform particle size" patented technology

The invention relates to the technical field of material crushers, and discloses a four-shaft integrated ton bag caked material crusher which comprises a rack, a crushing box is fixedly connected to the rack in a penetrating mode, a bag breaking device is arranged in the crushing box, a plurality of crushing shafts are rotatably connected to the crushing box in a penetrating mode, and a fixing shaft is arranged between every two adjacent crushing shafts. A filter screen is arranged in the crushing box, a driving assembly is fixedly connected to one side of the rack, and an overhauling platform is fixedly connected to the rack. By means of the integrated design, manual bag breaking and material transferring links are omitted, the four-shaft meshing breaking efficiency is improved by 50% or above compared with double-shaft equipment, the material handling capacity of a ton bag can reach 5-35 t / h, and the large-scale industrial production requirement is met.

The application relates to the field of chemical material preparation, and particularly discloses a high-purity silicon nitride powder and a preparation method thereof. The preparation method of the high-purity silicon nitride powder is as follows: 30-40 parts of silicon dioxide nano particles are mixed with 12-40 parts of carbon black to obtain a blend by adding deionized water, the blend is stirred, and the blend is dried at 60-65 DEG C to obtain a silicon-carbon precursor; nitrogen is introduced into the carbon-silicon precursor, the temperature is increased to 1350-1500 DEG C, and the temperature is kept constant to obtain a crude product; ammonia is continuously introduced into the crude product, the temperature is kept constant at 1300-1400 DEG C to obtain a first purification product; the first purification product is cooled to 600-650 DEG C, oxygen is introduced, and the temperature is kept constant to obtain a second purification product; and the second purification product is cooled to obtain the product. The preparation method of the high-purity silicon nitride powder can prepare high-purity silicon nitride powder with a purity of 99.65% or above.

The invention relates to the technical field of biological medicines, in particular to a preparation method of protein cross-linked nano affinity microspheres, which comprises the following steps: preparing carboxylated silicon dioxide nano microspheres with the particle size of 500nm by adopting a sol-gel method, mixing tetraethoxysilane and ammonia water according to the volume ratio of 1: (3 + / -1), reacting in an ethanol solution at 40 DEG C for 6 hours, filtering, washing, and drying to obtain the protein cross-linked nano affinity microspheres. And centrifuging to obtain a microsphere precipitate, washing with deionized water for three times to finally obtain a nano microsphere suspension of which the surface is rich in carboxyl, and controlling the solid content to be 10 + / -0.5 mg / mL. The capturing efficiency of the finally prepared protein cross-linked nano affinity microspheres for exosomes reaches 95.0%, the binding capacity reaches 28.5 mu g / mg, the purity of the extracted exosomes is higher than that of an ultracentrifugation method, the biological activity and structural integrity of animal cell exosomes and plant cell exosomes are completely kept, and the protein cross-linked nano affinity microspheres are suitable for large-scale industrial production. The problems that in a traditional exosome extraction method, the recovery rate is low, impurity pollution is serious, exosome activity is damaged, and the application range is limited are solved.

The application relates to the technical field of compound fertilizer production, in particular to a roller inoculating machine for compound fertilizer production and processing and a processing technology thereof, which comprises the roller inoculating machine, the rear side of the roller inoculating machine is fixedly connected with a material pre-processing mechanism, and the front side of the material pre-processing mechanism is fixedly connected with a crushing mechanism. The pre-dispersion crushing mechanism is arranged, pre-extrusion crushing of caked raw materials is synchronously completed in the process of quantitative feeding, the caked raw materials stuck in the inverted convex filter plate mesh hole can be fully extruded by the extrusion plate matched with the extrusion frame, and only the finely crushed raw materials which have completed pre-dispersion can fall through the filter plate mesh hole and enter the next process, so that the probability of large-volume caking entering the crushing mechanism is reduced from the source, the operation load of the subsequent crushing mechanism is effectively reduced, equipment wear is reduced, energy consumption is reduced, and the service life of the equipment is prolonged. The quantitative weighing and feeding structure is arranged, and quantitative uniform feeding of the compound fertilizer raw materials is realized.

This invention discloses a Pickering emulsion based on silk fibroin self-assembled particles and its preparation method. The preparation method includes the following steps: adjusting the pH of the silk fibroin solution to 4.0-4.5, adding NaCl to a final concentration of 0.05-0.1 mol / L, mixing, and then heating to 40-50 °C and allowing it to stand at a constant temperature. Using the obtained silk fibroin self-assembled particle dispersion as the aqueous phase and vegetable oil as the oil phase, the mixture is mixed with excipients and homogenized by high-speed shearing to obtain a primary emulsion. This primary emulsion is then treated by high-pressure microfluidic jet to obtain the Pickering emulsion based on silk fibroin self-assembled particles. This method requires no chemical modification or exogenous reagents, is green and simple, and does not use organic solvents. It can prepare emulsions with high biosafety and high storage stability without emulsifiers, improving process safety and scalability, and broadening its application in the food, cosmetics, and biopharmaceutical fields.

The invention belongs to the technical field of solid electrolyte materials, and particularly relates to a garnet type solid electrolyte and a preparation method and application thereof. The D50 of the garnet type solid electrolyte is less than 300nm, and the specific surface area of the garnet type solid electrolyte is 2-30m < 2 > / g. The garnet type solid electrolyte has the beneficial effects that the garnet type solid electrolyte has irregular spherical morphology, good particle dispersity, uniform granularity and relatively small particle size, and has a wide application prospect, especially in the field of lithium ion solid-state battery manufacturing; the preparation method of the garnet type solid electrolyte is high in controllability, simple and convenient to operate and low in manufacturing cost, and the whole preparation reaction process is carried out under low-temperature and normal-pressure conditions, so that the preparation method is energy-saving and environment-friendly.

This utility model discloses a pulverizing and grinding device for the production of ester raw materials, including a main support unit, a ball mill at the top of the main support unit, a secondary pulverizing device on one side of the main support unit, a material collection unit at the top feed end of the secondary pulverizing device, and the discharge end of the ball mill above the material collection unit, allowing the discharge from the ball mill to enter the material collection unit. Air nozzles and air outlets are provided on both side walls of the secondary pulverizing device, and sealed conveying units are provided at both the top feed end and the bottom discharge end of the secondary pulverizing device. This utility model addresses the problems of localized temperature rise in existing grinding equipment leading to thermal decomposition of ester raw materials and insufficient grinding precision. It employs multi-stage pulverization, coarsely pulverizing followed by ultrafine grinding, reducing the energy consumption of a single device. Furthermore, a low-temperature medium is introduced during the fine grinding process for cryogenic pulverization or low-temperature grinding, inhibiting the thermal degradation of esters, thus meeting the high standards required in the food, pharmaceutical, and other fields.

This utility model relates to the field of atomization spray technology, specifically an atomization spray precision control device. The device includes an atomizer with a side-hollow structure. A baffle plate is located inside the atomizer, and a transmission groove is formed within the atomizer. A connecting rod is fixedly connected to the top of the baffle plate. The top of the connecting rod extends into the transmission groove and is fixedly connected to a gear. A threaded rod is rotatably connected inside the transmission groove. A sliding block is threadedly connected to the external thread of the threaded rod, and another sliding block is threadedly connected to its external thread. A rack is fixedly connected to the bottom of the sliding block. A limit rail is fixedly connected to the top of the inner wall of the transmission groove. The advantages of this utility model are that it ensures uniform drug particle size, enabling precise deposition in the respiratory tract and lungs, improving drug absorption efficiency, optimizing drug distribution, avoiding excessively high or low local drug concentrations, enhancing therapeutic effects, and reducing side effects. Compared to traditional devices, it significantly improves operational quality and efficiency.

The application belongs to the technical field of food preparation, and relates to a preparation method of PE emulsion prepared from citrus peel residues and high-dietary-fiber fat-reducing mayonnaise. The preparation method of the PE emulsion is as follows: (1) the dried and crushed citrus peel residues are soaked and pretreated with acidic oxidized electrolytic water, and after the soaking is completed, the activated materials are obtained by washing, drying and sieving; (2) the activated materials are mixed with water and then subjected to water bath heating treatment, and the citrus peel residue fiber concentrate is obtained by drying the residue; (3) the citrus peel residue fiber concentrate is dispersed and then subjected to colloid mill pretreatment and wet ball milling, and the citrus peel residue-based colloid suspension is obtained after the wet ball milling; and (4) the citrus peel residue-based colloid suspension is mixed with vegetable oil and then subjected to shearing homogenization to obtain a coarse emulsion, and then the coarse emulsion is subjected to ultrasonic treatment, and finally the citrus peel residue-based PE emulsion is obtained. The problems of unstable structure, easy oxidation, poor storage stability and poor taste of the fat-reducing mayonnaise prepared by using the PE emulsion are solved.

The application discloses a waste and old asphalt coiled material recycling and crushing equipment, which comprises a box body, two groups of crushing rollers are arranged in the box body through bearings, two groups of mounting covers are bolted to the side walls of the box body, and driving motors are bolted to the surfaces of the two groups of mounting covers; the auxiliary airflow stirring structure in the barrel solves the problems of insufficient crushing degree, uneven particle size and difficulty in meeting the standard of regenerated materials of the traditional single crushing channel; the two groups of crushing rollers complete primary crushing and cutting, the crushing barrel cooperates with built-in crushing knives to complete secondary fine crushing, meanwhile, the air pump cooperates with the air storage disc and the one-way spray head to spray airflow into the crushing barrel, so that the asphalt coiled material powder accumulated on the bottom of the barrel is blown up, material accumulation dead angles and wall sticking are avoided, the uniformity of material crushing is further improved, double crushing cooperates with airflow stirring to ensure sufficient material crushing and uniform particle size, the standard of subsequent regenerated processing materials is met, and the crushing processing quality stability is improved.

The invention belongs to the technical field of dibromohydantoin production, and particularly provides a dibromohydantoin synthesis method which comprises the following steps: S1, preparing a raw material aqueous solution, namely respectively mixing dimethyl hydantoin, sodium bromide and liquid caustic soda NaOH with deionized water to form a dimethyl hydantoin aqueous solution, a sodium bromide aqueous solution and a liquid caustic soda NaOH aqueous solution; s2, premixing the raw material aqueous solution, namely mixing the aqueous solution of dimethyl hydantoin, sodium bromide and caustic soda liquid NaOH prepared in S1 to obtain a premix; s3, electrochemical in-situ bromination reaction: introducing the premix into a micro-channel reactor provided with an electrolysis electrode, and applying current to the premix to obtain a dibromohydantoin initial solution; and S4, crystallizing, separating and drying the product, carrying out cooling crystallization through a three-stage stepped cooling method to obtain a dibromohydantoin crystal, carrying out centrifugal separation to obtain a dibromohydantoin wet product, and then drying to obtain a dibromohydantoin finished product. The method can improve the generation stability and the product quality of the dibromohydantoin.

The utility model relates to collagen extraction technical field especially, it is raw material crusher for animal collagen extraction, including the rubbing crusher box and the crushing box, be provided with crushing subassembly in the crushing box, and the crushing box bottom is provided with the screening net of inclination, the screening net bottom is provided with vibration subassembly, is provided with rubbing subassembly in the rubbing crusher box. The utility model discloses through crushing subassembly to the raw material preliminary crushing processing, and the raw material after crushing part that meets the particle size requirement falls into the screening cylinder through the mesh of screening net, at this moment, the rubbing motor drives rubbing axle direct current and the reverse rotation staggered rotation of starting rubbing, and then drive rubbing blade rotation to the crushing raw material carries out secondary rubbing processing, repeatedly under the action of centrifugal force, the raw material is broken and thrown to the inner wall of screening cylinder, wherein the particle size that meets the standard passes through the screening hole on the screening cylinder, and the one that does not meet is in the direct current and the reverse rotation of rubbing blade, the rubbing process of pulling, until the particle size meets, thereby ensuring that the particle size of final raw material is uniform.

The application belongs to the technical field of insulation material processing, and specifically relates to an insulation layer material pretreatment device for cable manufacturing, which comprises a sorting unit, a crushing unit and a melting unit. The sorting unit is equipped with a metal detector, a sliding cutter, an extrusion roller and a blowing device, and the metal detector, the sliding cutter, the extrusion roller and the blowing device realize accurate separation of metal impurities, surface impurity removal and water content control. The crushing unit adopts main and auxiliary cutting rollers matched with an automatic speed regulating assembly and a crushing knife group to achieve two-stage uniform crushing. The melting unit is combined with a pushing auger and a waste heat circulation preheating design to realize stable conveying and energy recovery, and solves the problems of incomplete impurity removal, uneven waste crushing particle size, low process dispersion efficiency, insufficient melting stability, resource waste and environmental pollution in the existing insulation layer material pretreatment, realizes efficient impurity removal, uniform crushing, stable melting and resource recycling of the insulation material, and adapts to the demand of large-scale continuous production.

The application relates to a multifunctional spherical Prussian blue nanolaser and a preparation method and application thereof, and belongs to the field of nanobiological materials and biological medicine. The nanolaser takes spherical Prussian blue nanoparticles as a main body structure, has good near-infrared photothermal response performance and active oxygen (ROS) removal capacity, and can improve the superoxide dismutase (SOD)-like catalytic activity and antioxidant performance by doping metal elements such as ruthenium, bismuth and manganese. The nanolaser can generate a mild photothermal effect of 38-45 DEG C under near-infrared laser irradiation, and cooperatively remove excessive active oxygen in an inflammatory microenvironment, thereby reducing the expression of inflammatory factors and matrix metalloproteinases, inhibiting the activation of the iezo1 / Piezo2 / MMP13-related inflammatory and matrix degradation pathways, and relieving oxidative stress damage and inflammatory reactions. The nanolaser has the characteristics of uniform particle size, good dispersibility, high stability and excellent biocompatibility, and can be used for the prevention of diseases such as osteoarthritis and rheumatoid arthritis. The application constructs a nanolaser system with mild photothermal regulation and antioxidant activity.

This invention belongs to the field of materials technology and relates to a method for preparing and applying nickel hydrogen phosphate electrochromic nanomaterials. It overcomes the technical problems of existing nickel-based electrochromic materials, such as low transmittance, small optical modulation range, and difficulty in large-size fabrication after film deposition on transparent conductive substrates. The method for preparing the described nickel hydrogen phosphate electrochromic film employs room-temperature electrodeposition technology. The prepared nickel hydrogen phosphate electrochromic material exhibits small, uniform nanoparticle size and allows for the construction of large-size in-situ films (10 × 10 cm). 2 The characteristics of this method make it suitable for constructing high-performance electrochromic films. The prepared films have the characteristics of high transmittance in the faded state, wide spectral modulation range, and high coloring efficiency. Moreover, the preparation process is low-cost and efficient, and can be mass-produced, making it easy to realize industrial production. It has broad application prospects in the fields of electrochromism, flexible wearables, and smart displays.

The utility model belongs to solid waste base cementitious material processing technical field, specifically disclose a kind of solid waste base cementitious material powder grinding device, including bottom plate, the bottom plate upper end one side is connected with first support plate, first support plate one side upper portion is connected with feed pipe, feed pipe one end is extended to first support plate one side, first support plate is opened with rolling mouth at the place corresponding feed pipe, feed pipe is located inside rotation of rolling mouth, the outer wall one side of feed pipe is connected with stabilizing plate, stabilizing plate one side is connected with outer tube, the utility model is structured design by double layer powder grinding, strong magnetic iron removal, convenient cleaning etc., realize that powder grinding efficiency and quality promotion, iron impurity efficient removal, maintenance convenient and cost reduction, and structure stable adaptability is strong.

The utility model discloses a vertical mill for mineral powder. The vertical mill comprises an equipment rack, the fine grinding frame is fixed on the surface of the equipment rack; the fine grinding arc-shaped screen is fixed on the inner wall of the fine grinding frame; the first grinding roller is rotationally connected to the interior of the fine grinding frame; the first fixing frame is fixed on the outer wall of the first grinding roller; and the fine grinding blocks are fixed to the outer wall of the first fixing frame, the multiple sets of fine grinding blocks are arranged in an annular array mode, multiple sets of arc-shaped grinding strips are fixed to the surface of the fine grinding arc-shaped screen, and grinding grooves matched with the arc-shaped grinding strips are formed in the surfaces of the fine grinding blocks. According to the vertical mill for the mineral powder, a two-stage grinding structure combining coarse grinding and fine grinding is adopted, so that the grinding efficiency and precision of the mineral powder are greatly improved, the granularity of a finished product of the mineral powder is more uniform, and higher production requirements are met.

The utility model discloses an efficient medicine powder crusher which comprises a machine frame, a feeding hopper is fixedly connected to the top of the machine frame, the feeding hopper is obliquely arranged, one end of the low position of the feeding hopper is connected with a feeding bin, the feeding bin is fixedly connected with the machine frame, a crushing shaft is rotationally connected into the feeding bin, and the crushing shaft is fixedly connected with the machine frame. The bottom of the feeding bin communicates with a material temporary storage bin, a feeding auger is rotationally connected into the material temporary storage bin, and the bottom of the material temporary storage bin communicates with the top of the smashing tank through a conveying pipeline. The efficient medicine powder crusher adopts a multi-stage collaborative crushing structure, so that the crushing efficiency and the crushing quality are improved; during feeding, the inclined feeding hopper is matched with the crushing shaft and the crushing cutter to preliminarily crush large-particle raw materials; in the crushing tank, the crushing shaft, the crushing rod and the crushing plate with the bulge form multiple crushing, so that the medicine powder is impacted in all directions, the granularity of the crushed medicine powder is uniform, the pharmaceutical process and the medicine effect are guaranteed, and the production quality is improved.

This invention discloses hollow silver-platinum nanoalloy particles, their preparation method, and applications. The silver-platinum nanoalloy particles have a particle size of 30-60 nm, an overall hollow structure, and a porous surface distribution of silver and platinum fused together. The preparation method includes: using epigallocatechin gallate as the sole reducing agent and stabilizer, reducing silver nitrate in ethylene glycol to prepare monodisperse silver nanoparticles; then, at 60-80°C, slowly adding chloroplatinic acid solution in batches to the silver nanoparticle solution to carry out an in-situ exchange reaction; after the reaction, washing and separation yields the final product. This invention provides a green, simple, mild, and highly controllable preparation method. The prepared silver-platinum nanoalloy particles simultaneously possess excellent nanozyme catalytic activity and high-sensitivity surface-enhanced Raman scattering performance, achieving integrated synergistic catalytic and detection functions. It has broad application prospects in food safety testing, environmental monitoring, and biosensing.

This invention discloses a compound preparation for treating vascular dementia and its preparation method. The active pharmaceutical ingredient consists of protopanaxadiol and gallic acid in a 1:1 mass ratio, and the dosage form is liposomes. The preparation method includes extraction, mixing, liposome preparation, and optional freeze-drying steps: protopanaxadiol and gallic acid are extracted and purified from ginseng rhizome and Terminalia chebula fruit, respectively. After mixing, they are combined with phospholipids and cholesterol to prepare a lipid membrane. The membrane is then homogenized by hydration, low-temperature ultrasound, and high-pressure microfluidic jet to obtain a homogeneous liposome suspension, which can be further freeze-dried into a freeze-dried powder. The 1:1 composition of protopanaxadiol and gallic acid targets multiple points on the pathological mechanism of vascular dementia, showing significant therapeutic effects and broad application prospects. This preparation uses a liposome dosage form to improve the bioavailability of the active ingredient, the preparation process parameters are controllable, the active ingredient has high purity, the liposomes have uniform particle size, high encapsulation efficiency, and good stability.

The application relates to a method for improving the density of a platinum-based powder metallurgy alloy, which realizes the purpose of reducing the porosity of a precious metal powder metallurgy alloy ingot and improving the material density through vacuum melting, powder preparation, resonance compaction, liquid phase sintering, controlled forging and other processes. The above process is adopted, the high-temperature endurance strength and toughness of the platinum-based powder metallurgy alloy are greatly improved, the high-temperature service life of the product is significantly enhanced, and good economic benefits are brought.

The invention provides spherical copper oxide water atomization production equipment and a preparation process thereof, and relates to the technical field of copper oxide preparation, firstly, a medium-frequency induction smelting furnace is used for smelting and pre-oxidizing a copper material, and then an atomization tower and a porous rotary damping spray head in the atomization tower are used for carrying out water atomization crushing and oxidation on molten copper; and then a rotational flow dehydrator and an airflow drying tower are used for dehydration and deep oxidation. Copper liquid pollution is prevented through nitrogen whole-process protection and smelting segmented oxidation, the rotating speed of the porous rotary damping spray head is stabilized through wavy concave-convex structure embedment and constant damping design of ball groove bearing balls, and particle aggregation and nozzle deposition are avoided in combination with pulse type intermittent jet flow. The copper oxide powder with high sphericity, uniform granularity and pure surface is obtained, the production efficiency of spherical copper oxide is improved, the service life of a nozzle is prolonged, and energy consumption is reduced.

The utility model provides a kind of rice bran crushing processing equipment, belong to rice bran crushing processing technical field, including pulverization cylinder, the inner wall of the pulverization cylinder is fixedly connected with guide plate, further include: convenient cleaning subassembly, the convenient cleaning subassembly includes the rotating seat of symmetry fixed connection in the outer wall of pulverization cylinder, located top rotating seat top wall is fixedly connected with driving motor A, the output end of driving motor A is fixedly connected with bidirectional screw rod.In the utility model, the convenient cleaning subassembly that is set can be quickly, easily open sealing cover plate, so that the upper and lower grinding disc that originally closely cooperate realizes separation, without using complex disassembly tool, also without spending a lot of time disassembling numerous components, greatly reduce the difficulty of equipment maintenance, operating personnel can directly contact the inside of pulverization cylinder and grinding disc surface, it is convenient to clean thoroughly to residual rice bran, effectively reduce maintenance time consumption and labor intensity, also help to improve the service life and operating stability of equipment.

The invention relates to material crushing equipment for a PVC drying pipeline. The material crushing equipment comprises a spiral conveyor, a cyclone drying bed, an airflow drying tower, a crusher and an air blower, the cyclone drying bed and the airflow drying tower are sequentially arranged from top to bottom, the upper end of the airflow drying tower is communicated with the cyclone drying bed, and the discharging end of the spiral conveyor is communicated with the middle of the airflow drying tower; an air outlet of the air blower communicates with the middle of the airflow drying tower and is located below the discharging end, and the air blower is used for feeding airflow into the airflow drying tower and is matched with the airflow drying tower to form an airflow conveying channel from bottom to top; the crusher is detachably installed in the airflow drying tower and correspondingly arranged on a material conveying path between the discharging end and the air outlet. According to the material crushing equipment for the PVC drying pipeline, large PVC materials can be crushed in time, the situation that a conveying channel is blocked due to the fact that the large materials fall into the bottom of an airflow drying tower to be stacked is avoided, and production continuity is guaranteed.

The utility model relates to a fresh rice production line and a feeding device thereof in the field of automatic rice preparation. The fresh rice production line comprises an elevator, a storage tank, a first conveying mechanism and a first storage conveying mechanism, the first conveying mechanism comprises a pumping machine, a conveying tank and a first conveying pipe, a feeding port of the pumping machine is communicated with a discharging port of the storage tank, a discharging port of the pumping machine is communicated with a feeding port of the conveying tank, and the first conveying pipe is a J-shaped structural pipe. The pipe orifice of the horizontal pipe of the first conveying pipe is communicated with the discharge hole of the conveying tank; after the pumping machine pumps finely-screened rice in the storage tank into the conveying tank, the finely-screened rice is conveyed into the first storage cabin at the high position from the low position through the first conveying pipe. According to the utility model, fine-screened rice is conveyed in an anti-gravity manner, so that impurities in rice grains entering the storage tank are less, the sizes of the grains tend to be consistent, and the taste and the appearance of cooked rice can be effectively improved.

The application provides a silicon-carbon composite negative electrode material and a preparation method and application thereof, and belongs to the technical field of new energy materials and electrochemistry. Silicon powder and metal oxide are tightly combined through sand milling to build a continuous and stable structure, the volume expansion of the silicon powder and the metal oxide is inhibited, the stress of the silicon powder is released, then the sand-milled composite slurry is mixed with carbon material, and spray drying granulation and carbonization treatment are performed to prepare the negative electrode material. Based on the mutual stability effect, the application can accommodate and relieve the large volume expansion of the silicon material, and the stability of the material is maintained. The prepared composite negative electrode shows extremely low volume expansion (<20%). The metal oxide in the application has the ability to stabilize the SEI film and improve the conductivity. In combination with the addition of the carbon material, the conductivity of the composite material is synergistically improved, and the electrochemical performance is improved. Therefore, the prepared composite material has high sphericity, high tap density and excellent electrochemical performance.

The utility model relates to the field of tea processing, and discloses a tea processing deblocking machine which comprises a machine body, a motor is fixedly connected to the outer wall of the machine body, a deblocking shaft is fixedly connected to the output end of the motor, a plurality of deblocking rods are fixedly connected to the outer wall of the deblocking shaft, and a screening assembly is arranged in the middle of the inner wall of the machine body. A beating assembly is arranged at the bottom in the machine body, an extraction assembly is arranged on the outer wall of the machine body, the screening assembly comprises a plurality of fixing plates, the fixing plates are fixedly connected to the inner wall of the machine body, a sliding rod is fixedly connected between every two adjacent fixing plates, the outer wall of each sliding rod is slidably connected with a screening plate, and the outer wall of each sliding rod is sleeved with a spring. According to the tea leaf deblocking device, the pumping assembly drives the piston to slide up and down in the barrel body through the connecting rod by utilizing the power of the reciprocating assembly, so that water in the water storage tank is pumped and conveyed, and the water is atomized and sprayed on tea leaves through the atomizing nozzle, so that the tea leaves are softened, and the deblocking difficulty is reduced.

The utility model discloses a wind power generation fan blade pneumatic simulation experiment table, which belongs to the technical field of wind power generation fan blade pneumatic simulation, and is characterized by comprising a simulation box, a wind sand simulation assembly is arranged in the simulation box, and a sealing assembly is arranged on the outer side of the simulation box. The wind-sand simulation assembly comprises a supporting seat fixedly connected into the simulation box, and the problems that when an existing wind power generation fan blade pneumatic simulation experiment table conducts a wind-sand simulation experiment, an automatic sand cleaning structure is generally lacked, accumulated sand generated in the experiment process is not convenient to continuously remove, and the experiment efficiency is high can be solved. The existing wind power generation fan blade pneumatic simulation experiment table generally adopts a bolt type or rigid buckle type sealing structure, so that the sealing and the opening of the simulation box are inconvenient to quickly complete, the experiment preparation process is tedious, the operation is simple, and the cost is low. And the experiment efficiency is influenced.

This invention proposes a method for preparing nanocrystalline lithium iron phosphate based on carboxylated iron phosphate, comprising the following steps: S1. Iron oxide red and iron powder are mixed as an iron source, dissolved in deionized water, phosphoric acid is added, and the mixture is activated at 50-150°C. A multifunctional surface activator is then added for the first aging and crystal growth, followed by pulverization; S2. An organic solvent is added, and the mixture is aged a second time at 50-150°C. The mixture is then filtered, washed, and carboxylated iron phosphate is obtained; S3. The carboxylated iron phosphate is ball-milled and mixed with a lithium source, followed by spray drying to obtain a dry powder; S4. The dry powder is sintered to finally obtain carbon-coated nanocrystalline lithium iron phosphate. This invention facilitates the synthesis of nanocrystalline lithium iron phosphate, helps obtain nanocrystalline particles with uniform size, and promotes lithium-ion diffusion.

The application discloses a preparation method of a nanoscale multi-metal catalyst, which comprises the following steps: mixing ferric nitrate, magnesium nitrate, lanthanum nitrate, gadolinium nitrate, ammonium heptamolybdate and citric acid with water to obtain a concentrated solution by heating and concentrating; mixing ethylenediaminetetraacetic acid, ammonia water and urea to obtain an ethylenediaminetetraacetic acid solution; mixing the concentrated solution and the ethylenediaminetetraacetic acid solution to obtain a mixed solution by stirring, adding a surfactant into the mixed solution and calcining, and finally roasting. The ferric nitrate, the magnesium nitrate, the lanthanum nitrate and the gadolinium nitrate are mixed, a complexing agent is added, a solution is prepared by using a complexing method, the solution is concentrated, calcined and sieved, and finally the nanoscale multi-metal catalyst is formed. The catalyst prepared by the method has a uniform particle size. The catalyst prepared by the method is combined with a plasma technology to prepare a single-walled carbon nanotube, and the single-walled carbon nanotube (without treatment) has a high ratio, a large IG / ID and a small powder resistance.