28results about How to "Simple processing method" patented technology

The utility model discloses a durable spiral net with stable air permeability, which comprises a left-hand spiral ring (1) and a right-hand spiral ring (2) which are wound by monofilaments, and the left-hand spiral ring (1) and the right-hand spiral ring (2) are sequentially and circularly crossed together to form a crossed hole (3) which is penetrated by string ring monofilaments (4) to form the spiral net. A corresponding cross-linking core wire (5) is inserted into the left-hand spiral ring (1) in the same column and / or a corresponding cross-linking core wire (5) is inserted into the right-hand spiral ring (2) in the same column, the cross-linking core wire (5) comprises a plurality of cross-linking monofilaments (51) which are arranged in parallel, and the cross-linking monofilaments (51) are fixedly connected through cross-linking points (52) to form the cross-linking core wire (5). According to the durable spiral net with the stable air permeability, the stability of the air permeability of the net surface can be guaranteed in the solid-liquid separation machining process, the solid-liquid separation efficiency is improved, meanwhile, the strength of the net surface is enhanced, the spiral net is durable, and the service life is prolonged.

A kind of secondary machine tool centering method of fir type wheel groove of steam turbine rotor, it is related to a kind of rotor centering method, to solve the problem that steam turbine rotor fir type wheel groove secondary machine tool machining cannot be centered.The present application installs shaft on machine tool spindle, moves shaft into wheel groove from wheel groove end face, makes the depth reference position line of shaft coincide with the depth size reference line position of wheel groove;When clearance value L1 is greater than L2, rotate rotor impeller counterclockwise;Conversely, rotate rotor impeller clockwise;If clearance value L1 is greater than L3, machine tool spindle is adjusted upwards along Y axis;Conversely, machine tool spindle is adjusted downwards along Y axis;When clearance value L1, clearance value L2, clearance value L3 and clearance value L4 are equal to theoretical value M;Shaft is taken off from machine tool spindle, wheel groove milling cutter for product machining is installed, product machining is carried out, and centering is completed.The beneficial effect is to realize the centering of rotor wheel groove secondary machine tool.

This invention provides an electrochemical membrane reactor and its application in acidic wastewater treatment, belonging to the field of wastewater treatment, and particularly relating to the treatment of acidic wastewater. The device mainly includes membrane electrodes (including anodes and cathodes, with the number of cathodes and anodes being the same), an electrolytic cell, an acidic wastewater neutralization tank, a product water tank, and a DC power supply. The membrane reactor applies an electric field to the cathode and anode membrane electrodes via the power supply, generating hydroxide ions on the cathode surface to neutralize the acidic wastewater in the neutralization tank. Excess hydroxide ions can combine with heavy metal ions to form hydroxide precipitates. Simultaneously, a water pump extracts the clarified liquid containing organic pollutants after the reaction, and the organic pollutants in the water are degraded through electrochemical oxidation at the anode. This reactor can achieve the neutralization of acidic wastewater and the removal of heavy metal ions without the addition of external chemical reagents, while simultaneously electrochemically oxidizing and degrading organic pollutants in the water.

The application provides a method for preparing an elliptical micro convex lens array on a hard and brittle material based on a femtosecond laser and a dry etching method and a device thereof, and comprises the following steps: processing a through hole on a substrate surface, processing a micro-nano composite structure on the substrate surface for forming a super-hydrophilic surface; coating PDMS glue on the surface of the hard and brittle material, placing the hard and brittle material coated with the PDMS glue at the bottom of a container with liquid; contacting the super-hydrophilic surface with the surface of the hard and brittle material coated with the PDMS glue, and applying a downward pressure; through the action of surface tension and the downward pressure, the PDMS glue in the rectangular through hole of the substrate forms an elliptical micro convex lens structure; the PDMS is stripped through evaporation to obtain a hard and brittle material with residual PDMS; and the hard and brittle material with residual PDMS is subjected to plasma dry etching to obtain an elliptical micro convex lens array structure on the hard and brittle material. The application can efficiently and flexibly form a high-quality elliptical micro convex lens array on a hard and brittle material.

The application discloses a kind of photovoltaic glass self-cleaning nano coating and its processing method, for crosslinking grafting on the surface of photovoltaic glass to control water contact angle less than 0.3 °, it is related to photovoltaic maintenance technical field, the photovoltaic glass self-cleaning nano coating includes mesoporous silica, epoxy group polyether, dimethyl diallyl ammonium chloride, enamine, ethyl chloroacetate, crosslinking agent, initiator, silane coupling agent.The application has the photovoltaic glass self-cleaning nano coating of water contact angle less than 0.3 ° formed on the surface of photovoltaic glass, so that water film spread on the surface of photovoltaic glass is separated from the photovoltaic glass self-cleaning nano coating by contaminant, and then the effect of removing contaminant is carried out by using gravity and / or wind power to drive water film to move.

The invention relates to a preparation method of an O2-type cobalt-free lithium-rich manganese-based positive electrode material and a preparation method of a lithium ion battery. The preparation method of the O2-type cobalt-free lithium-rich manganese-based positive electrode material comprises the following steps: preparing a manganese-based carbonate precursor of the O2-type cobalt-free lithium-rich manganese-based positive electrode material, mixing the obtained manganese-based carbonate precursor with a lithium salt, and carrying out primary calcination or pre-calcination and secondary calcination on the obtained mixture to obtain the O2-type cobalt-free lithium-rich manganese-based positive electrode material. Therefore, the O2-type cobalt-free lithium-rich manganese-based positive electrode material is obtained. The positive electrode material obtained by the preparation method disclosed by the invention has the advantages of O2 type, lower nickel content than a theoretical ratio, higher specific capacity and excellent rate capability, and the highest cutoff voltage can relatively reach 5.4 V.

The invention relates to the technical field of mortar and concrete preparation, in particular to a coal-fired furnace slag modification method and application thereof. According to the invention, the slag is subjected to crushing and screening, moisture content control, pore pre-filling of the fly ash-cement mixture, water addition and pre-mixing and coating, and modification treatment, such that the porosity of the slag is reduced, the fluidity of the slag is improved, and the mechanical property of the slag is significantly improved. Besides, the slag subjected to modification treatment is applied to production of mortar and concrete, 100% replacement of natural sand by the slag can be realized, the compressive strength of the mortar and the concrete can be greatly improved, and remarkable environmental protection and economic benefits are achieved.

The application discloses a battery device and an electric device. The battery device comprises a box, battery monomers and a thermal management assembly. The box is enclosed to form a containing cavity. A plurality of battery monomers are arranged in the containing cavity. The thermal management assembly comprises a first manifold, a second manifold and a plurality of heat exchange pieces. At least part of the heat exchange pieces are arranged between adjacent battery monomers. The heat exchange piece comprises a heat exchange main body and two manifold connecting parts which are connected in communication. The manifold connecting parts of each heat exchange piece are connected in communication with the first manifold and the second manifold respectively. The heat exchange main body comprises a shell and a flow channel partition. The shell encloses a heat exchange cavity. The heat exchange cavity comprises a flow channel area and two manifold areas which are connected in communication. The flow channel partition is arranged in the flow channel area and cooperates with the shell to form a plurality of flow channels. The two manifold connecting parts are connected in communication with the two manifold areas respectively. The battery device provided by the application can reduce cost and improve reliability.

The invention belongs to the technical field of waste polycarbonate recovery, and particularly relates to a method for preparing dihydric alcohol through catalytic hydrogenation recovery of waste polycarbonate. The method comprises the following steps: by taking waste polycarbonate plastic as a raw material, carrying out catalytic hydrogenation reaction in a reaction system of a catalyst, alkali and a solvent in a hydrogen atmosphere, and recovering to prepare dihydric alcohol; the catalyst takes zirconium dioxide as a carrier and is loaded with nickel and palladium. According to the method, carbon-oxygen bonds in a long-chain structure of the waste polycarbonate are efficiently promoted to break through selective catalytic hydrogenation, the waste polycarbonate is converted into dihydric alcohol with a high additional value, the conversion rate of a waste polycarbonate substrate is larger than 80%, the yield of the dihydric alcohol is larger than 85%, recycling of the waste biodegradable CO2-based polycarbonate is effectively achieved, and the method is suitable for industrial production. The emission of CO2 in the polycarbonate degradation process is avoided, and the cycle period of the waste plastic is accelerated; the method is used for upgrading and reproducing the waste plastics. The reaction process is environment-friendly and low in cost, and has higher industrial application potential and high value-added dihydric alcohol.

The invention discloses a frequency-adjustable bandwidth micro flexible surface acoustic wave sensor and a design and preparation method thereof. Structural design parameters and a structural design range are selected according to structural characteristics of an SAW sensor; structural design parameters, a substrate material and an electrode material are used as optimization objects, eigenvalue quality factors corresponding to all step length nodes of to-be-optimized parameters are obtained through finite element simulation calculation, a proper function fitting method is selected, function fitting is conducted on quality factors corresponding to the to-be-optimized parameters, and the quality factors corresponding to the to-be-optimized parameters are obtained; obtaining a fitting function of the to-be-optimized parameters; and optimizing the fitting function of the plurality of to-be-optimized parameters based on a multi-parameter particle swarm optimization algorithm to obtain optimized structural design parameters of the SAW sensor. A flexible substrate structure is prepared by adopting a high-precision electric field driven spray deposition 3D printing technology, and the whole SAW sensor structure is prepared by utilizing a high-precision photoetching technology. The problems that an existing SAW sensor is narrow in signal resonant frequency, large in size and poor in flexibility are solved, the stability of the SAW sensor in a complex environment is improved, and the measurement range of the SAW sensor in the complex environment is widened.

The application discloses a multi-material surface controllable millimeter scale lens and a preparation method thereof, and belongs to the technical field of laser micro-nano machining. Two ion beams are obliquely incident on the surface of a hard material sample, the sample is fixed on a sample holder and uniformly rotates at a certain speed, and a very smooth millimeter scale lens can be obtained after etching for a period of time. The millimeter scale lens has excellent stability and surface quality, and is very suitable for being used as a template to transcribe a millimeter scale convex lens. In a word, the application can efficiently etch a smooth, uniform and surface controllable millimeter scale lens on the surface of various hard materials through the method of oblique incidence of two ion beams, and to some extent, solves the problems of difficult surface morphology control, poor surface quality, low preparation efficiency and complex preparation process during the preparation of the millimeter scale lens.

The invention discloses a method and a device for separating and extracting uranium from tantalum-niobium smelting ore extraction residues. The method comprises the following steps: step 1, leaching by an oxidation method and an acid method; step 2, solid-liquid separation and filter residue washing; step 3, neutralization and precipitation; 4, acid decomposition, filtration and extraction stock solution preparation; 5, extracting, separating and extracting; step 6, a uranium recovery step; and 7, treating and recycling a raffinate water phase and a lean organic phase. The invention aims to realize efficient recovery and comprehensive utilization of uranium resources.

The invention discloses a large-tube-hole continuous spiral baffle plate heat exchanger which mainly comprises a shell, heat exchange tubes, spiral baffle plates, pull rods, pipe spacers, tube plates, tube boxes, connecting tubes and the like, the heat exchange tubes are evenly arranged in the shell and penetrate through the spiral baffle plates to be fixed to the tube plates at the two ends, the spiral baffle plates are used for supporting the heat exchange tubes, and the tube boxes are used for supporting the heat exchange tubes. The spiral baffle plates are arranged in a spiral mode relative to the axis of the heat exchange tube, the diameter of tube holes in the spiral baffle plates is larger than the outer diameter of the heat exchange tube, the difference value range of the diameter of the tube holes and the outer diameter of the heat exchange tube is 1-3 mm, the heat exchange tube penetrates into the tube holes to form annular holes, high-temperature-resistant inorganic sealant is poured into the annular holes, and the annular holes are completely made up. And the heat exchange tube and the spiral baffle plate are fixed together through glue. The large-pipe-hole continuous spiral baffle plate greatly reduces the manufacturing precision requirement and the installation difficulty of the heat exchange pipe, pipe hole annular gaps are made up through sealant, leakage flow of shell pass fluid is effectively avoided, and the heat transfer performance of the heat exchanger is effectively improved.

The invention provides a pretreatment method and system for selective solid and impurity removal of oil slurry. The pretreatment method comprises the following steps: dividing the oil slurry into a light component and a heavy component according to temperature; selectively hydrotreating the light components according to the sulfur content of the light components; mixing the heavy component with an organic polar solvent to form a mixed heavy component; filtering and settling the mixed heavy component for solid removal to obtain a permeation side component and a concentration side component, and mixing the concentration side component with the heavy component and an organic polar solvent; carrying out solvent removal on the permeation side component to obtain a filtered oil slurry heavy component; hydrotreating the filtered oil slurry heavy component to obtain a hydrogenated oil slurry heavy component; the selective solid and impurity removal pretreatment of the oil slurry is completed. According to the method, different types of oil slurry can be subjected to targeted deep solid removal and deep impurity removal, and the high-quality aromatic-rich component with relatively concentrated molecular weight distribution is obtained and is used as a preparation raw material of high-quality mesophase pitch and / or needle coke.

This invention discloses a tool and method for constructing a horizontal wellbore through repeated volumetric fracturing. The tool includes a surface control device and a downhole main unit, with the surface control device located outside the downhole main unit. The downhole main unit includes a cylinder, with a top seat and a base connected to its top and bottom ends via upper and lower bearings, respectively. Both the top seat and the base are cylindrical. An electric motor is installed inside the base and connected to the surface control device and the lower bearing. A magnetic positioning device is installed inside the cylinder and connected to the surface control device. Several nozzles are provided on the sidewall of the cylinder, and each nozzle has a pressure-bearing, fracture-resistant outer wall matching its size. A connector for connecting to tubing is fixedly installed at the upper end of the top seat. Packers are installed on the outer sides of both the top seat and the base. This invention can reduce the amount of materials used in wellbore reconstruction and lower construction material costs.

The application relates to the technical field of plant extracts, and discloses a forsythia suspense leaf extract and application thereof. The preparation method of the forsythia suspense leaf extract is as follows: (1) forsythia suspense leaves are treated by killing green, drying and crushing, and then sprayed with a sodium hydroxide-ethanol solution and sealed and placed, followed by drying and steam explosion to obtain solid A; (2) solid A is extracted by refluxing with an ethanol solution, and then subjected to solid-liquid separation and concentration to obtain concentrated solution A, anhydrous ethanol and an additive are added into the concentrated solution A, stirred, placed, subjected to solid-liquid separation, concentrated into a paste, and then water is added into the paste, mixed, and concentrated to obtain concentrated solution B; (3) concentrated solution B is placed at room temperature, subjected to solid-liquid separation, and the collected solid is dried to obtain the forsythia suspense leaf extract. The preparation method of the forsythia suspense leaf extract in the application can effectively extract forsythoside in the forsythia suspense leaves, and the content of forsythoside in the extract can reach more than 60%.

The application discloses a treatment method of ethylene oil-containing waste lye, which comprises the following steps: firstly, adding an acid to the waste lye for partial neutralization, and controlling the pH value of the waste lye to be 8-9; then, adding a demulsifier to the waste lye for demulsification; and finally, removing the oil phase from the demulsified waste lye by using an extractant, and performing post-treatment on the raffinate. The waste lye treatment method is simple and easy to implement, a small amount of demulsifier can be added to demulsify the emulsified butter, the treatment effect is good, the waste lye has a low COD content, the economic efficiency is high, and the demulsified butter can be removed by extraction, and the process is simple and easy to operate.

The invention provides a green and environment-friendly high-alumina fly ash multi-component synergistic extraction method, and belongs to the technical field of fly ash extraction. The preparation method comprises the following steps: adding sodium carbonate into fly ash serving as a raw material, mixing and calcining to obtain a nepheline phase which is easily soluble in an acidic medium; then adding sulfuric acid to decompose the sintered product to dissolve the sintered product, heating and aging to separate silicon from aluminum to obtain silica gel and a metal salt solution, using the silica gel to prepare white carbon black, and separating and purifying the metal salt solution to prepare aluminum oxide, iron oxide, calcium hydroxide and magnesium hydroxide. According to the method, the problems of low utilization rate and impure product in the traditional extraction process are better solved, the utilization rate of useful substances in the fly ash can reach 95% or above, and the method is more environment-friendly, so that green, refined and efficient utilization of the fly ash is realized.

The present application relates to sewage treatment technical field, more specifically, the present application relates to a kind of straw-based biofilm carrier and its preparation method and application.The present application provides a kind of straw-based biofilm carrier and its preparation method, and with crop straw as film-hanging carrier, construct algal-bacterial symbiotic system and be applied to aquaculture tail water treatment.Straw can be used as the carrier filler for the growth of microalgae and bacteria on the one hand, and can slowly release organic matter as carbon source for the growth of microorganisms attached thereto during degradation on the other hand.Microalgae photosynthesis can provide oxygen for aerobic bacteria, and the present application does not need aeration when treating aquaculture tail water, and the aged biofilm on straw is periodically peeled off by water flow impact and collected as fish bait, while treating aquaculture tail water, the organic matter and nitrogen, phosphorus and other nutrients therein can be recycled and utilized.

The invention discloses a hanging carrier roller set mounting accessory, and belongs to the technical field of belt conveyors. The mounting accessory comprises a carrier roller fixing piece, a position adjusting plate and a positioning plate. The position adjusting plate is connected to the carrier roller fixing piece in the mode that the position adjusting plate can rotate and can be positioned at at least two angles. Hanging pieces at the two ends of the hanging carrier roller set sequentially penetrate through the position adjusting plates and the carrier roller fixing pieces, the positioning plates are detachably connected with the hanging pieces, and therefore the hanging carrier roller set is locked. The position adjusting plate is rotated by a specific angle (such as 180 degrees) relative to the carrier roller fixing piece, so that the carrier roller set can be quickly adjusted to be in a normal working position or a forward inclination deviation rectifying position. According to the invention, conventional materials such as steel plates, round steel and the like are adopted and can be manufactured through simple cutting, drilling and welding, the original complex casting process is replaced, the machining cost and working hours are remarkably reduced, and meanwhile, convenience in installation, adjustment and disassembly is realized.

This invention relates to a selenium-containing compound vitamin chewable tablet and its preparation method, comprising the following raw materials in parts by weight: 10-16 parts selenium-enriched yeast, 25-35 parts L-ascorbic acid, 0.5-1 part vitamin K, 10-20 parts sorbitol, 1-3 parts DL-α-tocopherol acetate, 3-8 parts sodium octenyl succinate starch, 1-5 parts acetylated distarch adipate, 0.7-1.2 parts magnesium stearate, 0.3-0.5 parts potassium citrate, 0.04-0.07 parts steviol glycosides, and 5-10 parts modified silica. This invention improves the crispness and palatability of the chewable tablet by adding acetylated distarch adipate and sodium octenyl succinate starch; the addition of modified silica effectively reduces vitamin attenuation and improves the stability of the components.

This invention discloses a method and application for in-situ growth of Ti3C2Tx-titanium dioxide heterostructure material, belonging to the field of two-dimensional composite materials and gas sensor technology. The invention uses a hydrochloric acid solution containing fluorine compounds as the etching solvent and employs a hydrothermal method to etch Ti3AlC2 to prepare Ti3C2Tx material (Tx = -F, -OH, and -O). The Ti3C2Tx material is then subjected to oxygen microwave plasma treatment at low power, while controlling the oxygen volume fraction to 10-30%. This partially oxidizes the Ti3C2Tx material into two-dimensional sheet-like TiO2 oxides. These two-dimensional sheet-like TiO2 oxides tightly coat the surface of Ti3C2Tx, forming a Ti3C2Tx-TiO2 heterostructure material. Gas sensors prepared using this Ti3C2Tx-TiO2 heterostructure material exhibit excellent responsiveness and selectivity to hydrogen.

This invention belongs to the field of high-strength rail production technology and discloses an online heat treatment process for precisely controlling the hardness distribution of the rail head cross section. First, the rail head cross section is divided into four regions from the surface inwards: Region 1 (≤6mm from the surface), Region 2 (6mm < ≤ 11mm), Region 3 (11mm < ≤ 21mm), and Region 4 (> 21mm). Then, the hot-rolled rail, which is in the austenitic state, undergoes online accelerated cooling. Different cooling intensities are applied to the rail head surface during the pearlitic transformation in Regions 1, 2, 3, and 4, respectively. After accelerated cooling, the rail is allowed to cool naturally to room temperature. This invention divides the rail head cross section into four regions from the surface inwards and applies different cooling intensities during the phase transformation of the metal in different regions, thereby controlling the Brinell hardness distribution of the rail head cross section to meet the comprehensive requirements of the European rail standard BS EN 13674.1.

The invention discloses a K / FeS / g-C3N4 / TiO2 (at) PVDF membrane for photocatalytic oxidation, a preparation method and application, through SO2 and CO2 generated by pyrolysis of K4 [Fe (CN) 6] and K2SO3, gaps are generated in a microstructure of g-C3N4, the specific surface area is higher, adsorption of organic pollutants is enhanced, the reaction rate is increased, a FeS / g-C3N4 / TiO2 heterojunction structure is constructed, and the photocatalytic oxidation performance of the membrane is improved. And carbon defects or nitrogen defects generated by K ionization are introduced into the structure, so that stable electron channel connection and light energy absorption and conversion paths are realized, the light response efficiency is improved, the recombination rate of photo-generated electron holes is reduced, and the free radical yield is improved. The membrane material is applied to a circulating aquaculture water body treatment system, odor substances are degraded through photocatalytic oxidation, and deep purification of water is achieved.

The invention establishes a rapid, accurate and efficient high performance liquid chromatography-mass spectrometry detection method for detecting common antipsychotic drugs in blood, and can rapidly detect the concentration of 11 common antipsychotic drugs in a blood sample. The method is suitable for screening and quantitative detection of clinical common medicine types, clinical treatment medicine monitoring, poisoning screening and large-scale biological sample detection work in clinical and scientific research experiments of the psychiatry department, and has very remarkable significance in clinical use.

This invention provides an electrochemical magnetorheological polishing apparatus and method for semiconductor wafers. The polishing apparatus includes: a spindle, a workpiece stage, a polishing disc, a conductive through-hole foam pad, a sealed electrolytic cell, a temperature control module, and a dynamic clustered magnetic field generator. During polishing, the conductive through-hole foam pad acts as an electrolytic framework, improving current utilization and uniformity of global anodic oxidation, enabling precise online control of the electrochemical anodic oxidation rate. Magnetic particles, under the action of the dynamic magnetic field, synergistically work with the foam pad to enhance shear yield stress and abrasive holding force, improving the uniformity and stability of mechanical removal. Abrasive particle renewal and self-sharpening are achieved through the clustering effect of the dynamic magnetic field. Combined with online processing gap control, this allows for staged rough and fine polishing of the wafer. This invention significantly improves wafer planarization efficiency and surface quality, possessing promising application prospects and industrialization value in semiconductor power device manufacturing.

The present application relates to the technical field of protein detection, and particularly relates to an ELISA detection kit for quantitatively detecting S-palmitoylation modified target proteins and a use method thereof; the kit comprises Protein G magnetic beads, a 96-well transparent polystyrene microwell plate, a 96-well plate magnetic frame, solution A, solution B, solution C, solution D, solution E, solution F, solution G; the present application relates to the comprehensive application of immunoprecipitation (IP), click chemistry and enzyme-linked immunosorbent (ELISA) signal amplification experimental principles, and realizes the effect of high-throughput quantitative detection of S-palmitoylation modified target proteins, is suitable for the mechanism and function research of S-palmitoylation modified target proteins of various samples (such as high-throughput screening of small molecule inhibitors targeting S-palmitoylation modified target proteins), and improves the experimental efficiency.

The invention relates to a preparation method of a carbon fiber reinforced aluminum / glass bead composite metal material. According to the method, nickel-plated carbon fibers are added into aluminum / glass bead powder turbid liquid in a stirring state, and then hot pressed sintering is performed in a graphite mold, so that nickel and aluminum on the surfaces of the nickel-plated carbon fibers tend to form a continuous and uniform Al3Ni thin-film-shaped interface layer at an interface, generation of an Al4C3 brittle phase is hindered, and the performance of the nickel-plated carbon fibers is improved. And the transition of the load from the matrix to the carbon fiber is realized. The proportion of the nickel-plated carbon fibers, the aluminum powder and the glass beads can be properly adjusted according to different purposes, and the material obtained after hot pressing sintering is uniform in component distribution and excellent in performance.