193results about How to "Uniform fineness" patented technology

The invention relates to production equipment for extracting cotton protein from cottonseed meal. The production equipment comprises a feeding mechanism, a particle crashing mechanism, a midway feed bin, an airlock, a sieving mechanism and a material receiving mechanism, wherein an air outlet of the airlock is communicated with the sieving mechanism; the particle crashing mechanism is an airflow scroll type crashing mechanism, and is provided with an air inlet chamber, a crashing chamber and a grading chamber which are communicated with each another; and the airflow scroll type crashing mechanism comprises a feeding device communicated with the crashing chamber, a crashing device arranged inside the crashing chamber, a grading device arranged inside the grading chamber, as well as a first driving device and a second driving device which respectively drive the crashing device and the grading device. According to the production equipment, cottonseed meal particles with different sizes can be crashed, and the finenesses of the cottonseed meal particles after being crashed are uniform, so that the phenomenon that the compositions of the cotton protein are damaged is reduced, the working requirement of the sieving mechanism is reduced at the same time, and the equipment cost is saved.

The invention belongs to the field of nonmetallic mineral processing and specifically relates to a superfine ground calcium carbonate powder production method. The method comprises the following steps: crushing the marble raw material into coarse calcium carbonate having the diameter of less than or equal to 1cm; grinding the coarse calcium carbonate by use of a dry grinding mill to obtain a calcium carbonate powder mixture; performing grading treatment on the calcium carbonate powder mixture to obtain a first-stage powder having the granularity greater than j, a second-stage powder having the granularity within the range of j-k, and the third-stage powder having the granularity less than k, next, returning the first-stage powder to the dry grinding mill for grinding, performing wet grinding on the second-stage powder, directly feeding the third-stage powder to a product homogenization silo for homogenization or wet grinding, wherein k is smaller than j; and after the all wet-ground calcium carbonate slurry is dried and crushed, homogenizing and packaging. The superfine ground calcium carbonate powder production method is capable of effectively saving the energy under the premise of guaranteeing the product quality and the production efficiency.

The invention provides a method for purifying polyvinyl alcohol resins. The method comprises the steps as follows: polyvinyl alcohol resins are added to the mixed solvent of ethanol and water and are beaten; ethanol is added so that the polyvinyl alcohol resins are separated out; the polyvinyl alcohol resins separated out are dried. The remaining content in the polyvinyl alcohol resins acquired by using the method meets the requirement of medicinal auxiliary materials.

The invention belongs to automotive non-woven textiles, in particular to an environmentally friendly differential fiber non-woven automotive interior trim material and a preparation method thereof. The preparation method comprises the following steps of: preparing needle-punched grey cloth through feeding fibers, roughly opening, mixing fibers, fine opening, carding the fibers into a net, crosswise spreading the net and needling by using environmentally friendly colored flame retardant terylene short fibers as a raw material; and then carrying out foam gum dipping in flame retardant polyacrylate foaming rubber latex to obtain the differential fiber non-woven automotive interior trim material, wherein the adhesion quantity of the rubber latex is controlled to be 12-18g/m<2>. The environmentally friendly differential fiber non-woven automotive interior trim material has good property, high quality, environmental protection and high safety; and the preparation method provided by the invention has low energy consumption, no pollution and low cost.

The invention discloses a ceramic ball mill with a discharging classifying screen. The ceramic ball mill comprises a hopper, a roller, a transmission mechanism and the like, wherein a first screening plate, a secondary screening plate, a first oversize material hole, a secondary oversize material hole, a first vibrating arm and a secondary vibrating arm are arranged in a classifying screen device at different heights, the first screening plate is arranged on the first vibrating arm by a connecting thread of the first vibrating arm, and a secondary buffer device is also arranged between the upside of the secondary screening plate and the classifying screen device. A ground material is accelerated to be screened through vibration of the classifying screen device, the fineness uniformity, the screening efficiency and the screening effect of a ground product are improved, the action of a vibrating mechanism on the classifying screen device replaces the manual screening operation, the labor intensity is alleviated, impact force of the vibration on the classifying screen device is alleviated due to a first buffer device and the second buffer device, production equipment cannot be damaged easily, and the service life of the production equipment is prolonged.

The invention relates to a white glaze, a boundary-free ceramic tile containing the white glaze and a production method of the boundary-free ceramic tile. The white glaze comprises, by weight percentage, 60-75% of opacifier, 15-28% of opacifying frit and 4-15% of clay. The boundary-free ceramic tile comprises a green body decoration layer, a white glaze layer, a comprehensive decoration layer anda transparent glaze or protecting glaze layer. The production method includes: using a sponge material to polish the surface of a green body; drying, and using a rubber roller to print the surface ofthe green body with the white glaze, and subjecting the white glaze to sintering of 1100-1200 DEG C to obtain the white glaze layer of the boundary-free ceramic tile, wherein the white glaze is weighed according to the formula, 45wt% of printing oil is added, ball milling is performed until the fineness of glaze slurry is smaller than 40 micrometers, the viscosity of the glaze slurry is regulatedto Engler viscosity 18-23 seconds, and glaze slurry proportion is 1.53-1.62.

The invention discloses a high-efficiency crushing machine. A crushing device is arranged on a rack; a crushing feeding hole and a crushing discharge hole are respectively formed in the upper part and the lower part of the crushing device; a rolling screen which can rotate relative to the rack and is of a cylindrical structure, and a rolling screen driving device for driving the rolling screen to rotate are arranged on the rack; the crushing discharge hole is positioned in the inner side of the rolling screen; crushed garbage falls on the continuously rotating rolling screen through the garbage discharge hole; when the fineness of the crushed garbage meets provided requirements, the garbage can be screened off from the rolling screen, the garbage which does not meet the fineness requirements rotates along with the rolling screen, falls into the crushing feeding hole when rotating to a highest point, and is further crushed. Therefore, the uniform fineness of the garbage screened off from the rolling screen is effectively ensured, the process requirements can be met, and garbage which does not meet the fineness requirements can be automatically crushed for the second time or multiple times, so that the labor operation cost can be lowered, and the crushing efficiency can be improved.

The invention relates to a polyethylene fiber composite cloth with high protection performance and preparation and application thereof, a preparation method comprises the following steps: 1) high-fineness ultra-high molecular weight polyethylene fibers are sequentially subjected to unwinding and tiling, heating and drafting, gluing and drying to obtain unidirectional polyethylene fiber cloth; (2) carrying out cross lamination and compounding on multiple layers of unidirectional polyethylene fiber cloth, rolling together with an isolating layer, and then carrying out vacuum hot-pressing shaping treatment, so as to obtain polyethylene fiber composite cloth; wherein the activation temperature of the glue is 50-150 DEG C, and the glue content is 5-30wt%; and the polyethylene fiber composite cloth is used in a soft bulletproof armor or a hard bulletproof armor. Compared with the prior art, the preparation method has the advantages that conventional high-denier monofilament and bunched ultra-high molecular weight polyethylene fibers are adopted, heating and drafting are carried out after unwinding and tiling, the activation temperature and the gluing amount of glue are controlled, and vacuum hot-pressing shaping treatment is carried out after compounding, so that the prepared polyethylene fiber composite cloth is good in appearance quality, high in bulletproof performance and small in discreteness.

The invention relates to a water cooling method in polyester fiber melt spinning, additionally installing spray generator at the air intake of the original side blower or around the spinning window, and able to generate water spray, water foam, and water bubble or water film according to the needs; the melt streamlet extruded from spinning components passes through swelling area into deformation area, then blows the water spray, water foam, and water bubble or water film in the spinning window by a breeze at a speed of 0.05-0.1 m/s to make them fill up the whole window to cool threads, and after heat exchange, the produced water drops and surplus water are collected by water collector. Its advantage: accelerating cooling, reducing skin-core structure of threads and avoiding swing of threads caused by wind cooling. It makes fiber size uniform, breaking tenacity high and product quality good.

The invention relates to improved viscose fiber containing pearl particles and a manufacturing method thereof. The fiber is reinforced, high-wet-modulus or rich and strong viscose fiber, the total amount of the fiber comprises 0.1 to 15.0 weight percents of the pearl particles, 0.2 to 6.0 weight percent of denaturant, and 79.0 to 99.7 weight percents of cellulose, the dry rupture strength of the fiber is more than or equal to 2.2 cN/dtex, and the wet rupture strength of the fiber is more than or equal to 1.2 cN/dtex. The mixture of one or more components selected from the copolymer of fatty amines, polyamines compounds, alcohol amine, polyoxyethylene and the aliphatic amine thereof, fatty acid, fatty alcohol, amide condensation compounds, ethylene oxide and propylene oxide, quaternary ammonium, pyrrolidine dithiocarbamate, dithioglycol, imidazole and derivatives thereof, is adopted as the denaturant. The manufacturing method for the fiber comprises the steps of: (1) the preparation of a viscose stock solution; (2) the preparation of slurry of the pearl particles; (3) the injection mixing of the slurry of the pearl particles and the viscose stock solution through a pre-spinning injection system; (4) spinning; and (5) post-treatment.

The invention relates to a long afterglow solar energy storage light-emitting shooting target. To solve the problem that the prior night lighting equipment of the shooting target has high cost, a target surface or a piece of target paper is orderly coated with a transparent coating layer provided with long afterglow solar energy storage light-emitting material and a transparent water-proof coating layer, the target surface comprises an overland gun target, an aviation target and a navigation target. The coating is produced by transparent crylic acid varnish added with 20 to 65 weight percent of rare earth aluminate noctilucent powder. The target surface is firstly coated with a layer of white or light primer and then is coated with the transparent coating layer added with the long afterglow solar energy storage light-emitting material. No lighting is needed during the night use, the target can meet the requirement of the shooting training only through the light emission of the self energy storage, the brightness of the light emission is closer to the natural environment with low visibility at night and more meets the practical need, the target has low cost, short target arrangement time and less expense.

The invention discloses a poultry excrement drying device. The device comprises a hot-blast stove, a feeding mechanism, a stirring and grinding device, a separating column, a discharging mechanism, a fan and a dust recovery device, wherein the hot-blast stove is used to provide hot blast; the feeding mechanism is used to feed poultry excrement; the stirring and grinding device can scatter and grind the poultry excrement entering the shell of the device; the separating column is used to separate the poultry excrement from air flow; the discharging mechanism is arranged at a discharge hole on the lower end of the separating column and used for discharging; the fan is arranged in a pipe between the separating column and the dust recovery device and used to generate air flow along the hot-blast stove, the stirring and grinding device, the separating column and the dust recovery device; and the dust recovery device is used for air-out and dust recovery. The poultry excrement drying device has the advantages of fast processing speed, good dewatering effect and deodorizing effect, high nutrient retention capacity, good sterilizing effect, high degree of grinding, uniform fineness, no environmental pollution and the like. The technology is especially suitable for the pretreatment of poultry excrement feed preparation and is especially suitable to be used in the poultry farm.

The invention discloses a high-strength and wear-resisting liteglow glass product and a preparation method thereof. The glass product is prepared from the following components: silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, graphene, titanium dioxide, diboron trioxide, sodium silicate, potassium oxide, antimony oxide, arsenic oxide and noctilucent powder. The preparation method comprises the following steps: firstly, carrying out mixed melting on all the components to obtain a molten mass; secondly, raising the temperature of the molten mass to 1400 to 1500DEG C and performing thermal insulation for 12 to 14 hours; thirdly, feeding a glass molten mass into a forming machine to obtain glass products with different shapes and sizes; fourthly, carrying out annealing treatment on the glass products to obtain a finished product. The glass product prepared by the preparation method disclosed by the invention has better strength and wear resistance; the fragile degree of the product can be greatly reduced, the service life of the product is prolonged, and the use cost of the product is reduced.

The invention relates to a multi-jet-flow electrostatic spinning sprayer with uniformly distributed electric fields. The multi-jet-flow electrostatic spinning sprayer with the uniformly distributed electric fields comprises a solution injection tube, a spinneret plate and an electrode. The spinneret plate is a step-shaped spinneret plate formed by overlaying small circular truncated cones on multiple stages of hollow circular truncated cones, and the upper bottom surface of each stage of circular truncated cone is provided with spinneret orifices. The electrode is consistent with a hollow cavity of the spinneret plate in shape, and a gap is reserved between the electrode and the hollow cavity of the spinneret plate to form a solution cavity. The spinneret plate is made of hydrophobic insulation materials. According to the multi-jet-flow electrostatic spinning sprayer with the uniformly distributed electric fields, holes are formed in the hydrophobic insulation materials so that traditional metal needles can be replaced, electric field rejection between the needles is avoided, the rejection effect of jet flow sprayed out from the spinneret plate is weakened, and therefore nanofibers can be collected conveniently; in addition, the electric fields at the position of a center hole are effectively increased by the utilization of the step-shaped electrode and the spinneret plate matched with the step-shaped electrode, therefore, stable jet flow can be formed at the position of the center hole, and the nanofibers with even fineness can be obtained.

The invention discloses an organic rare earth europium luminescent polypropylene (PP) fiber and a preparation method thereof. The rare earth europium complex Eu(TTA)3DmPPhen luminescent material close to nanoscale is prepared by firstly preparing a phenanthroline neutral ligand and carrying out coordination on the phenanthroline neutral ligand and rare earth Eu (III) in combination with alpha-thenoyltrifluoroacetone and adopting a method of firstly carrying out titration under atmospheric pressure and secondly carrying out reaction under high pressure. The material emits strong pure red light at 615nm in a 10-5mol/L CH2Cl2 solution. The luminescent fiber is prepared by adopting the complex as a luminescent material and carrying out compound melt spinning on the complex and PP. When the content of the rare earth luminescent material in the fiber is 0.05%, the fiber emits stronger pure red light in a 10-5mol/L dimethyl formamide (DMF) solution and the luminescent position is still at 615nm. The luminescent fiber has the advantages of high color purity and better spinnability.

The invention belongs to the field of daily chemical organosilicone materials and discloses a preparation method and application of daily chemical organosilicone elastomer gel. The preparation method comprises the following steps: adding anorganic solvent, hydrogen-containing silicone oil, and a compound containing at least two aliphatic unsaturated groups in molecules into a reactor, and carrying out a precipitation polymerization reaction in the presence of a catalyst at the temperature of 50-90 DEG C for 2-9 hours; cooling and filtering after reaction completion, drying the obtained solid powder so as to obtain organosilicone elastomer powder; swelling the organosilicone elastomer powder with a diluents, thereby obtaining the daily chemical organosilicone elastomer gel, wherein the organic solvent refers to a volatile organic solvent which is soluble in reactive raw materials while insoluble in polymerization reaction products. According to the method disclosed by the invention, the organosilicone elastomer powder is prepared by the precipitation polymerization method by adopting a specific organic solvent, the requirement on equipment is low, and the obtained organosilicone elastomer gel is fresh and cool but not greasy in skin feeling and good in matte sense and can be directly added into daily cosmetics.

The invention discloses a calcium carbonate powder production technology. The production technology comprises crushing, homogenizing, grinding, grading, wet grinding and drying. Through use of sodium carbonate and dodecyl dimethyl benzyl ammonium chloride in homogenizing, after grinding efficiency is improved and grinding time is reduced. A water spraying device is arranged in a grinder and the sprayed atomized water improves powder weight so that the powder does not easily suspend and a grinding disc material layer is stable. The atomized water, sodium carbonate and dodecyl dimethyl benzyl ammonium chloride produce synergism to promote grinding effects. According to the technology, coarse powder subjected to dry grinding is graded and the graded secondary coarse powder is subjected to wet grinding so that wet grinding efficiency is improved and production unit energy consumption is reduced, the product particle size distribution is narrow and product fineness is uniform. The technology has the advantages of good product quality, high efficiency, simple processes, preparation convenience and low cost and is suitable for industrial large-scale production.

The invention provides a rake type vacuum drying system, which comprises a rake type vacuum drying host machine, a bag type filter, a condenser, a gas-liquid separator, a vacuum pump, an oil pump and a hot oil tank, wherein a main shaft of the rake type vacuum drying host machine is a solid main shaft; a plurality of rake tooth components are arranged on the main shaft; each rake tooth component comprises a sleeve shaft and four solid rake teeth uniformly distributed on the sleeve shaft in a fixed manner, and is connected on the main shaft through a sleeve shaft key; the rake teeth of the respective rake tooth components face towards the same direction, so that four passageways are formed in a tank body; and striking rods are respectively arranged in respective passageways or in spaced passageways. In the invention, materials inside the tank body of the drying host machine are struck continuously by using the striking rods, so that the crushing of the materials is accelerated, the materials can obtain larger specific surface areas, the drying process is accelerated, and finished products have uniform fineness and low water content; thus, the rake type vacuum drying system is suitable for drying lithium iron phosphate materials, and the product quality and drying efficiency are improved; moreover, the system is used for recovering solvents through the condenser and the gas-liquid separator, and is beneficial to reduction of the cost.

The invention relates to a water-based nano pigment-type gel pen ink and a preparation method thereof. The water-based nano pigment-type gel pen ink comprises the following components in percentage by weight: 20-40% of resin-free nano color paste, 10-30% of humectant, 0.1-3% of thickener, 0.2-3% of pH regulator, 0.05-0.5% of defoaming agent, 0.1-3% of lubricant, 0.2-2% of rust inhibitor, 0.2-2% of preservative and the balance of deionized water. The average particle size of the resin-free nano color paste is 100-250nm. The preparation method comprises the following steps: sufficiently stirring and uniformly mixing the components, and defoaming. By using the resin-free nano color paste, the ink has the advantages of favorable stability, proper viscosity, uniform particle fineness, smooth writing and uniform ink release without floating. The ink has the characteristics of bright color, light fastness, high water resistance and high stable quality after long-term storage, and can not have the phenomenon of stratification, precipitating deterioration or the like. The sand mill is used for grinding, so that the particle size of the pigment particles reaches nano scale. The preparation method is simple to operate and reasonable in technique.

The invention relates to a biconical rotary vacuum drying system, which comprises a biconical rotary vacuum drying main machine, a condenser, a gas-liquid separator, a vacuum pump, an oil pump, a hot oil tank, a vacuumizing pipe, an oil supply pipe and an oil return pipe, wherein the vacuumizing pipe extends into a cylinder body of the biconical rotary vacuum drying main machine from the inner cavity of a driving half shaft and the pipe hole of a driving shaft base; the oil supply pipe extends into an oil inlet cavity from the inner cavity of a driven half shaft and a pipe hole on a baffle; and two built-in oil supply branch pipes which are arranged horizontally on front and back sides are arranged on the middle part of a clamp sleeve of the cylinder body and are communicated with an oil inlet cavity of a driven shaft base. By the biconical rotary vacuum drying system, heat conducting oil can be distributed to integral clamp sleeve space uniformly to ensure the uniformity of clamp sleeve heating, the problem that biconical rotary vacuum drying is 'semi-hot and semi-cold' for a long term is solved, the quality of products and the work efficiency are improved, and energy is saved. In the biconical rotary vacuum drying system, solvents are recovered by a gas condenser and a liquid separator.