14results about How to "Easy to process and use" patented technology

The invention relates to nano alpha-aluminum oxide and a preparation method thereof, and belongs to the technical field of new materials. The preparation method of the nano alpha-aluminum oxide comprises the following steps: S1, fully mixing aluminum stone powder and ultrapure water, and standing to obtain a pre-solution; s2, a dispersing agent and seed crystals are added into the pre-solution for ball milling, and a mixture is obtained; s3, carrying out jet hedging atomization on the mixture, carrying out spray drying, and calcining to obtain nano alpha-aluminum oxide; the dispersing agent is one or more of polyethylene glycol, polypropylene ketone, dodecyl trimethyl ammonium chloride and octadecyl dimethyl hydroxyethyl ammonium perchlorate. The alpha-aluminum oxide produced by the method is high-purity spherical nanoscale particles which are easy to disperse, the particle size is 100-200nm, the particle size distribution is uniform and concentrated, and the alpha-aluminum oxide is easy to disperse. The prepared nano alpha-alumina powder is easy to process and utilize, and can be directly applied to the fields of polishing materials, additives, ceramic materials, carrier materials and the like.

The utility model discloses an aluminum profile machining and forming device with a cooling mechanism, which relates to the field of profile machining and comprises a workbench and an aluminum profile forming device body fixedly connected with the top end of the workbench, and a feeding port is arranged in the middle of the top end of the aluminum profile forming device body. The bottom end of the feeding port extends into the aluminum profile forming device body, mounting plates are fixedly connected to the two ends of the top end of the workbench correspondingly, and cooling mechanisms used for cooling the aluminum profile forming device body are arranged at the positions, at one ends of the mounting plates, of the two ends of the aluminum profile forming device body correspondingly. According to the aluminum profile machining and forming device with the cooling mechanism, aluminum profiles can be better cooled and formed through the cooling mechanism, the machining efficiency is guaranteed, cooling liquid is conveyed into the cooling pipe through a water pump, and therefore the outer side of the aluminum profile forming device body is cooled; and the condition of temperature rise caused by aluminum profile machining is reduced, and cooling forming of the aluminum profile is effectively assisted.

The application discloses a method for flocculating and clarifying cheese whey and separating milk minerals, and belongs to the technical field of dairy processing. The method comprises two parts of whey flocculation and clarification and milk mineral separation. The whey is made clear and transparent by flocculation, and then the milk minerals are separated from the flocculation by multiple centrifugal separation, so that the method is simple and easy to implement. The method greatly improves the clarity and transparency of whey, provides great convenience for enterprises to process and utilize whey, can obtain milk minerals and some protein products, effectively utilizes waste, and improves the profit of enterprises.

The utility model discloses a motor connecting piece adapted to different motor shaft diameters, a speed reducer and an assembling structure thereof, which comprise a sun gear, one end of the sun gear is provided with a connecting boss, one end of the connecting boss far away from the sun gear is provided with an installing boss, the installing boss is internally provided with a stepped hole used for being connected with a motor shaft, and the installing boss is provided with a through hole. A stepped hole is formed in the connecting boss, an opening of the stepped hole is flush with the end face of the mounting boss, the stepped hole comprises a plurality of mounting holes which are communicated with one another and have different diameters, the diameter of the mounting hole close to the sun gear is smaller than that of the mounting hole far away from the sun gear, and the sun gear, the connecting boss and the stepped hole are coaxial. The motor connecting piece adaptive to different motor shaft diameters can be connected with motor shafts with different diameters, a sun gear does not need to be replaced, the strength of the sun gear can be improved, and the motor connecting piece is simpler and more convenient to machine and use.

The invention discloses an ultrahigh-loading copper monatomic catalyst, a preparation method thereof and an acetylene semi-hydrogenation application of the ultrahigh-loading copper monatomic catalyst, and the preparation method comprises the following steps: roasting a nitrogen-containing precursor to obtain polymer carbon nitride; the preparation method comprises the following steps: adding polymer carbon nitride into an ethanol dispersion liquid of a copper precursor, carrying out ultrasonic treatment to obtain a mixed material liquid, and evaporating to obtain powder; and roasting the powder in vacuum to obtain the high-loading-capacity supported copper monatomic catalyst. The prepared copper monatomic catalyst is used for electrocatalytic acetylene reduction reaction, the catalyst with the optimal material loading component can catalyze C2H2 to C2H4 with high selectivity (the highest C2H4 Faraday efficiency is greater than 98%), and atomic-scale dispersed metal sites inhibit carbon-carbon coupling in the reaction; the Faraday efficiency of butadiene in a test total current range can be reduced to 0.5% or below, and the catalyst shows excellent catalytic activity and stability in an electro-catalytic acetylene hydrogenation reaction.

The utility model discloses a burr cleaning mechanism for rubber gasket processing, which comprises a base, a mounting groove is transversely formed in the top of the base, a position adjusting component is arranged in the mounting groove, a first mounting frame is vertically mounted on the top of the base, a driving component is arranged on the first mounting frame, an unfolding component is arranged on the top of the base, and a first adjusting component is arranged on the unfolding component. According to the burr cleaning mechanism for rubber gasket machining, the lead screw and the threaded block are arranged, when the inner sides and the outer sides of rubber gaskets of different sizes are machined, the lead screw is driven to rotate by rotating a hand-cranking wheel installed on the outer side of the base, and the threaded block in threaded connection with the lead screw is driven to transversely move in the rotating process of the lead screw; and through transverse movement of a moving plate and a third mounting plate mounted at the top of a threaded block, the distance between an auxiliary rotating roller and a rotating disc is adjusted, and rubber pads of different sizes can be conveniently used and machined.

The utility model relates to the technical field of papermaking waste pulp recovery, and discloses a corrugated carton papermaking waste residue circulating treatment device which comprises a carton body, a motor is fixedly installed on the back face of the carton body, two crushing wheels are fixedly installed at one end of the motor, a driving wheel is fixedly installed at one end of one crushing wheel, and a driving wheel is fixedly installed at the other end of the other crushing wheel. And crushing rods are fixedly mounted on the outer surfaces of the two crushing wheels. Compared with a traditional device, the waste residue crushing device has the advantages that the crushing wheels are matched with the crushing rods, so that the waste residue can be conveniently crushed, the waste residue can be quickly crushed into fine particles, the treatment efficiency is remarkably improved, the treatment time is shortened, and the whole treatment process is smoother and more efficient; and different components in the waste residues can be better mixed and dispersed through the uniform crushing effect, a solid foundation is laid for subsequent separation, recovery and other steps, and the utilization rate of waste residue recycling is increased.

The invention relates to the technical field of bioengineering, in particular to a method for preparing a bovine bone Maillard reaction product by a superfine grinding technology, which comprises the following steps: cleaning bovine bones; baking and drying the cleaned ox bones; crushing by using a coarse crusher, and sieving to obtain cattle bone coarse powder; selecting bovine bone coarse powder, and crushing the bovine bone coarse powder by using an ultrafine crusher to obtain bovine bone ultrafine powder; dissolving the bovine bone ultrafine powder in water, carrying out heat treatment to obtain proteinase, adding protease, mixing, adjusting the pH value, and carrying out an enzymatic hydrolysis reaction; according to the invention, a superfine grinding technology is added to treat the bovine bone, so that the bone structure is destroyed, the structure of protein is changed, the contact area of protein and enzyme is increased, and the enzymolysis effect is promoted; small peptides and amino acids are prepared by adopting multiple proteolysis technologies, then a Maillard reaction product is prepared through a thermal reaction, and meanwhile, the Maillard reaction temperature and pH value are regulated and controlled, so that the overall flavor of the final product is improved, and the unpleasant smell is weakened.

The utility model provides a breeding cage special for ecological chickens, and belongs to the technical field of breeding equipment, the breeding cage comprises a cage frame, a cage net, a ceiling, a cage door, a base, a bearing frame, a clamping block, a dirt collecting box, a limiting seat and a bottom plate, and the cage net is installed on the outer surface of the cage frame. The dirt collecting box can move at the bottom of the cage frame, the collected chicken manure can be rapidly taken out from the lower portion of the cage frame, the collected chicken manure can be conveniently treated, the chicken manure in the cage can be conveniently and regularly cleaned, the feeding environment is kept clean and sanitary, and infectious diseases can be reduced; after the chicken manure falls onto the arch-shaped bottom plate, liquid in the chicken manure flows downwards, solid-liquid separation is performed on the chicken manure, and the contact area between the chicken manure and air can be increased, so that air drying of the chicken manure is facilitated, and subsequent processing and utilization of the chicken manure by farmers are facilitated.

The invention relates to the technical field of centrifugal machines, and provides a parameter-adjustable horizontal scraper discharging centrifugal machine based on permanent magnet dual-motor driving, which comprises a shell, a sieve basket, a scraper, a first main shaft, a second main shaft, a first rotation driving piece and a second rotation driving piece, the first main shaft and the second main shaft are rotatably arranged in the shell, the first main shaft is a hollow shaft, and the second main shaft is a hollow shaft; the second main shaft is sleeved with the first main shaft, the screen basket is arranged on the first main shaft, the scraper is arranged on the second main shaft, the scraper is located in the screen basket and used for scraping materials attached to the inner wall of the screen basket to conduct spiral discharging, the first rotation driving part and the second rotation driving part are both arranged in the shell, and the first main shaft is in driving connection with the first rotation driving part. The second main shaft is in driving connection with the second rotation driving piece. By means of the technical scheme, the problem that in the prior art, the rotating speed of the screen basket and the rotating speed of the scraper of the horizontal scraper discharging centrifugal machine cannot be freely adjusted in real time is solved.

The invention relates to modified nano alpha-aluminum oxide and a preparation method thereof, and belongs to the technical field of new materials. The preparation method of the modified nano alpha-aluminum oxide comprises the following steps: S1, fully mixing a modifier, organic acid and a sintering aid to obtain a pre-solution; s2, adding aluminum stone powder into the pre-solution, and performing hydrothermal reaction after ultrasonic treatment to obtain a mixture; s3, the mixture is subjected to spray drying, calcination, purification and drying, and modified nano alpha-aluminum oxide is obtained; the modifier is one or more of cerium nitrate, cerium acetate, cerium carbonate, silicon tetrachloride, metasilicic acid, sodium silicate, zirconium nitrate, zirconium acetate and butyl titanate. The alpha-aluminum oxide produced by the method is high-purity composite modified nanoscale particles, the particle size is 100-150nm, the particle size distribution is uniform and concentrated, and the alpha-aluminum oxide is easy to disperse; the composition is good, easy to add and stable in performance.

The utility model discloses a kind of self-adaptive clamps for aviation 3D printing piece curved surface processing, belong to self-adaptive clamps technical field, it includes bottom plate, the bottom plate both sides are connected with side plate, multiple threaded bushings are connected with equal interval on the bottom plate, threaded rod is threadedly connected in the threaded bushing.The self-adaptive clamp for aviation 3D printing piece curved surface processing, printing piece curved surface is contacted with multiple suction cups, and force is applied downward, at this time movable column will be slid into to hollow column and compress spring, and universal ball joint will also be movable in fixed block, so that the height and angle of suction cup adapt to printing piece curved surface, and then adhere to contact with curved surface, then make electromagnetic plate produce magnetic attraction and hold movable column, prevent movable column from accidentally moving up, then by vacuum pump outside on rubber tube, make vacuum pump separate hollow cylinder and the air in suction cup, so that suction cup can be adsorbed and fixed printing piece, strong applicability, it is convenient for actual use processing.

The utility model discloses a scraping groove type lavender harvester capable of separating stems and flowers. The scraping groove type lavender harvester comprises a remote control crawler chassis, a control box, a storage battery, a lifting mechanism, a plane scraping groove mechanism, a grass supporting plate and a lavender harvesting box. A lifting mechanism is arranged on the upper side of the middle part; a lavender harvesting box is mounted below the lifting mechanism; a plane scraping groove mechanism is arranged on the front part; and a grass supporting plate is mounted at the front end of the plane scraping groove mechanism. Lavender plants are carded through the grass supporting plate, stem and flower separation is achieved through the plane scraping groove mechanism, the harvester adapts to different terrains and plant heights through the remote control crawler chassis and the lifting mechanism, the lavender harvesting device has the advantages of being efficient, convenient to use, environmentally friendly and the like, and the lavender harvesting quality and efficiency are improved.

The invention provides an external-combustion internal-heating type oxygen-enriched dry distillation method, which belongs to the technical field of coal dry distillation, and specifically comprises the following steps: step 1, coal gas discharged from a carbonization furnace enters a water scrubber for cooling and washing; 2, the coal gas cooled and washed by the water washing tower enters a heat exchanger to be cooled; 3, the coal gas cooled in the step 2 enters an electrical tar precipitator for tar reduction; 4, the coal gas subjected to tar reduction in the step 3 passes through a booster fan and then enters a CO2 absorption tower; after CO2 is absorbed by barren liquor, one part of coal gas is sent to a gas furnace, and the other part of coal gas is sent to downstream equipment; step 5, rich liquor from the CO2 absorption tower in the step 4 enters a CO2 desorption tower, barren liquor without CO2 is circulated to the absorption tower to absorb CO2, part of the removed CO2 is sent out, and the other part of the removed CO2 is sent to a gas furnace to adjust the temperature and the flow of coal gas; after the oxygen-enriched dry distillation process provided by the invention is adopted, the proportion of nitrogen in the coal gas component is reduced, and the proportion of carbon dioxide is increased. The calorific value of the coal gas is improved, and processing and utilization of the coal gas are facilitated.