464results about How to "Reduce types" patented technology

The invention relates to a tunnel ponding early warning method and device, computer equipment and a storage medium. The method comprises the steps that at least two first flow detection units are arranged at an inlet and an outlet of a tunnel, at least one second flow detection unit is arranged at a water outlet of the tunnel, local water accumulation threshold values of a plurality of water accumulation sensitive areas are determined based on historical water accumulation data, and the local water accumulation threshold values are arranged according to the threshold values to obtain a threshold value distribution sequence; dividing the threshold distribution sequence into a first sequence and a second sequence based on a preset proportion, and determining a first global threshold by a local ponding threshold at the boundary of the first sequence and the second sequence; calculating the inlet and outlet flow difference according to the first flow data and the second flow data, and further determining the water accumulation amount; and adjusting a second global threshold value according to the ponding risk index, and starting a corresponding risk early warning strategy when the ponding amount exceeds the first global threshold value or the second global threshold value. Low-cost and high-precision tunnel ponding monitoring is realized based on simplified sensing data, and the safety of tunnel passage is improved.

The invention discloses industrial-grade mixed oil produced by utilizing kitchen waste oil and a preparation method of the industrial-grade mixed oil, and belongs to the technical field of recycling of the kitchen waste oil. The invention relates to industrial-grade mixed oil produced by using kitchen waste oil and a preparation method thereof, and the preparation method comprises the following steps: firstly collecting kitchen waste containing the waste oil, and storing the kitchen waste in a container through special equipment; carrying out screen solid-liquid separation, cleaning grease on the surface of the solid waste, and then carrying out precipitation separation; then carrying out centrifugal separation, chemical cleaning, water washing, acid treatment, dehydration, degumming and metal ion removal on the separated grease and oil-containing liquid; carrying out ultrasonic-assisted multistage ester exchange after enzymolysis optimization, carrying out membrane separation on glycerol and fatty acid methyl ester, and carrying out reduced pressure distillation to obtain a high-purity fraction; carrying out adsorption refining, plasma treatment and supercritical fluid extraction; finally, nano particles are added and blended with additives, efficient recycling of the kitchen waste oil is achieved, and then high-purity industrial-grade mixed oil is prepared.

The invention discloses a surface passivating inert metal, a plating solution thereof and a passivating method, and belongs to the technical field of inert metal surface treatment. The plating solution comprises sulfydryl silane, amino silane, acid, deionized water and absolute ethyl alcohol. And the inert metal subjected to surface pretreatment is put into a plating solution to be subjected to electrolytic treatment and dipping treatment correspondingly, and then the inert metal with the silane composite passive film on the surface is obtained through stepped curing treatment. The plating solution is simple in component, stable in system and low in price; the preparation method of the plating solution is simple and easy to operate; the passivating treatment method is short in technological process and high in preparation efficiency; the prepared silane composite passivation film is uniform and compact in structure, colorless and transparent, can keep good gloss of the inert metal surface, and has excellent properties such as oxidation resistance, corrosion resistance and insulation.

The utility model relates to the technical field of sunlight rooms, in particular to a movable sunlight room. The movable sunlight room comprises a track and two sets of telescopic arch assemblies oppositely arranged at the two ends of the track. For any telescopic arch-shaped assembly, the telescopic arch-shaped assembly comprises a fixed arch-shaped unit and a movable arch-shaped unit, the fixed arch-shaped unit is fixedly arranged at the end of the track, and the movable arch-shaped unit is arranged outside the fixed arch-shaped unit in a sleeving mode and is in sliding connection with the track; the two movable arch units can slide oppositely along the track until the opposite ends of the two movable arch units abut against each other, and the other ends of the two movable arch units are connected with the corresponding fixed arch units in an adjacent mode respectively. A'side wall + top 'omnibearing ventilation mode can be provided, so that the permeability of the sunlight room is improved.

The invention provides a high-power high-frequency modular battery cluster charging and discharging test device, which is characterized by comprising an alternating current coordination controller connected with a middle computer and used for receiving an instruction transmitted by the middle computer and distributing current to a plurality of isolated ACDC modules; the input ends of the plurality of isolated ACDC modules are connected in parallel and then are connected to the AC co-controller and a three-phase mains supply, and the output ends of the plurality of isolated ACDC modules are connected in parallel and then form a DC bus for converting AC into DC and realizing voltage isolation; and a plurality of BUCK-BOOST modules, the input ends of the plurality of BUCK-BOOST modules are connected in parallel and then are connected to the DC bus, and the output ends of the plurality of BUCK-BOOST modules are connected in parallel and then are connected to a target battery cluster for testing the charging and discharging of the target battery cluster. Modular design is achieved, efficient charging and discharging capacity is achieved, the defects that a traditional scheme is large in size, high in cost, slow in dynamic response and the like are overcome, equipment efficiency and flexibility are improved, and the device is suitable for a high-power scene.

The invention discloses a method for preparing a porous ceramic filter ball from electrolytic manganese residues, and relates to the technical field of environmental protection and ceramic materials, and the method comprises the following steps: (1) raw material treatment: crushing the electrolytic manganese residues into particles of 2-3 cm, drying by using a dryer, and after drying, carrying out ball milling and sieving on the electrolytic manganese residues by using a planetary ball mill to obtain a raw material; (2) weighing and proportioning raw materials: weighing and proportioning the raw materials in percentage by weight: 50-80% of electrolytic manganese residues, 20-50% of calcined kaolin, 0-10% of an additional cosolvent and 0-10% of a pore-forming agent; (3) mixing the raw materials; and (4) granulating and aging the mixture. According to the method for preparing the porous ceramic filter balls from the electrolytic manganese residues, a brand new path is developed for comprehensive utilization of the electrolytic manganese residues, the path enables the utilization rate of the electrolytic manganese residues to be greatly increased, the path becomes an extremely effective path for consuming the electrolytic manganese residues, the electrolytic manganese residues can be fully utilized due to the characteristic of high utilization rate, and efficient cyclic utilization of resources is achieved.

The invention discloses a NiCrAl structured catalyst as well as a preparation method and an application method thereof. The catalyst contains NiCrAl layered double hydroxides (NiCrAl-LDHs) and a metal substrate, the NiCrAl-LDHs vertically grow on the surface of the metal substrate in situ, nickel ions, chromium ions and aluminum ions in the NiCrAl-LDHs structure come from the metal substrate, and the preparation method comprises the following steps: dissolving urea in water to prepare a urea aqueous solution; and putting the metal substrate into the urea aqueous solution, and carrying out hydrothermal reaction to obtain the composite material. The application method of the catalyst comprises the following steps: introducing current into the catalyst in a reaction atmosphere, and driving the catalytic reaction by using Joule heat generated by the current. The NiCrAl structured catalyst provided by the invention has the characteristics of simple preparation method, less chemical reagent dosage, excellent catalytic performance, easiness in batch production and the like, and is very suitable for application of electrothermal catalysis.

The utility model discloses a novel 50G Combo PON three-transmitting and three-receiving single-fiber six-direction optical device, which comprises a 50G PON optical assembly transmitting TO-CAN, a 50G PON optical assembly receiving TO-CAN, an XGSPON optical assembly transmitting TO-CAN, an XGSPON optical assembly receiving TO-CAN, a GPON optical assembly transmitting TO-CAN and a GPON optical assembly receiving TO-CAN which are packaged in a metal shell, and the metal shell and an insertion core assembly are welded together through laser. The beneficial effects of the utility model are that a Combo packaging technology is utilized, the light splitting filters are respectively adopted in the same metal square shell for independent coupling welding, a finished product supports the functions of a 50G PON, a GPON and an XGSPON at the same time, the module integration is high, the material types can be saved, the material cost can be reduced, and a positive effect is played on the upgrading of an access technology.

The invention discloses a preparation method of sphere-like submicron silver powder with a controllable particle size. The method comprises the following steps: 1, preparing a silver nitrate solution, an organic acid reducing agent solution and a dispersing agent solution; 2, preparing an organic acid salt reducing agent solution from a small amount of organic acid reducing agent solution, uniformly mixing the organic acid salt reducing agent solution with the polyacrylamide solution to form a base solution, and adding a small amount of silver nitrate solution to react to form nano-silver crystal nucleuses; 3, adding nitric acid and a dispersing agent solution, uniformly stirring, and then dropwise adding the residual organic acid reducing agent solution and the residual silver nitrate solution for silver crystal nucleus growth; and 4, washing and drying after solid-liquid separation. By controlling the adding mode of the reducing agent and the silver nitrate and reducing the silver nitrate in two steps, formation and growth of silver crystal nucleuses are controlled, regulation and control of the particle size of the sphere-like submicron silver powder are achieved, the sphere-like submicron silver narrow in particle size distribution, regular in morphology and good in dispersity is obtained, the preparation process is simple, green and environmentally friendly, and the method is suitable for industrial production. The method is suitable for heterojunction solar cells and high-end electronic devices.

The invention provides a heating furnace energy efficiency prediction and adjustment method based on subjective and objective combination weighting, and belongs to the technical field of oil and gas production. The method comprises the following steps: calculating a subjective weight of a heating furnace energy efficiency evaluation index by adopting an analytic hierarchy process; calculating objective weights of the heating furnace energy efficiency evaluation indexes by adopting an entropy weight evaluation method; calculating the comprehensive weight of the oil field heating furnace energy efficiency evaluation index based on a combined weighting method; performing linear regression on the heating furnace evaluation index comprehensive influence factor and the heating furnace thermal efficiency, and fitting to obtain a heating furnace thermal efficiency prediction model; judging whether the precision of the heating furnace thermal efficiency prediction model meets precision requirements. Accurate prediction of the heating furnace thermal efficiency is achieved, quantitative adjustment is conducted on the heating furnace air-fuel ratio, the heating furnace thermal efficiency calculation method is simplified, and the detection cost is saved.

The invention provides automobile spare part hoisting equipment, and belongs to the technical field of automobile spare part hoisting, the automobile spare part hoisting equipment comprises an L-shaped hoisting plate, a sleeve and a hoisting ring assembly, and further comprises arc-shaped plates symmetrically arranged in the sleeve, the opposite faces of the two arc-shaped plates are connected with matched cushion covers, a pair of shifting plates is arranged outside the sleeve, and the shifting plates are connected with the L-shaped hoisting plate. The shifting plate is provided with guiding faces inclining downwards, the sleeve is provided with a connecting piece connected between the shifting plate and the arc-shaped plate, the L-shaped hanging plate is provided with an adjusting groove, and an adjusting assembly arranged on the adjusting groove is arranged between the two guiding faces in a linkage mode. The guide wheels in the adjusting assemblies move along the guide faces, the positions of the two arc-shaped plates are flexibly adjusted in the sleeves, and therefore the motor rotor shaft lifting device adapts to motor rotor shafts of different sizes, the sleeves do not need to be replaced, the structure is simplified, the maintenance cost is reduced, meanwhile, it is ensured that the motor rotor shafts are tightly clamped, and lifting safety and reliability are improved.

The invention relates to a UV viscosity-reducing adhesive, a UV viscosity-reducing adhesive composition, an adhesive tape and a preparation method. The UV viscosity-reducing adhesive comprises an acrylate copolymer, wherein the acrylate copolymer comprises a main chain and a multifunctional acrylate side group grafted on the main chain; the main chain is formed by copolymerizing a plurality of polymeric monomers including an acrylate soft monomer, an acrylate hard monomer and a functional acrylate monomer; the acrylate soft monomer is acrylate long-chain alkyl ester, and the carbon atom number of the long-chain alkyl ester is greater than or equal to 4; the acrylate hard monomer is methyl (methyl) acrylate; the functional acrylate monomer is acrylic acid (ester) containing carboxyl and acrylic ester containing hydroxyl; the polyfunctional group acrylate side group is formed by a UV active substance, each molecule of which contains a plurality of acrylate groups and contains one epoxy group, through a reaction between the epoxy group and the carboxyl group on the main chain. The UV viscosity-reducing adhesive has a UV viscosity-reducing function, does not need to additionally add UV active monomers or low polymers, can enhance the UV light viscosity-reducing effect and improve the viscosity-reducing efficiency, and is also beneficial to reducing the ingredient composition of a UV adhesive material and simplifying the preparation method.

The invention provides a full-biodegradable composite film and a preparation method thereof. The full composite membrane comprises an outer layer, a middle layer and an inner layer, wherein the outer layer comprises modified calcium carbonate, PLA, PBAT and an epoxy chain extender; the middle layer comprises modified montmorillonite, PLA (polylactic acid), PBAT (poly (butylene adipate-co-terephthalate)), PPC (polypropylene carbonate) and an epoxy chain extender; the inner layer comprises PLA (polylactic acid), PBAT (poly (butylene adipate-co-terephthalate)), an epoxy chain extender and an optional anti-blocking agent. The preparation method of the raw materials of the middle layer comprises the following steps: (i) dividing an epoxy chain extender used by the middle layer into an epoxy chain extender A and an epoxy chain extender B, and mixing PPC, modified montmorillonite and the epoxy chain extender A to prepare a first master batch of the middle layer; (ii) mixing PLA, PBAT and an epoxy chain extender B to prepare a middle-layer second master batch; and (iii) uniformly mixing the middle-layer first master batch and the middle-layer second master batch, extruding and granulating to obtain a middle-layer raw material. The full-biodegradable composite film prepared by the preparation method disclosed by the invention is good in uniformity and quality.

The utility model discloses a quartz crystal resonator base structure suitable for multiple series of wafers, which is characterized in that a base is sequentially composed of a substrate layer, a vibrator electrode layer and a kovar ring from bottom to top; the vibrator electrode layer is provided with a cavity, and the cavity is communicated with the outside through the opening of the kovar ring; a lead PAD is also mounted in the cavity; the quartz vibrator is placed on the lead PAD; the lead PAD comprises a plurality of first-layer PAD bodies and a plurality of second-layer PAD bodies. The base is provided with a cavity, the plurality of first-layer PADs are installed in the cavity, the plurality of second-layer PADs are correspondingly installed on the plurality of first-layer PADs, and one side of each first-layer PAD extends towards the center of the base, so that at least one side of each first-layer PAD protrudes out of each second-layer PAD. According to the device, a single base can adapt to multiple series of wafers, the circuit is simple and stable, the production process is simple and convenient, the base types are further effectively reduced, the base type management efficiency is improved, the production efficiency is improved, and environmental protection and energy conservation are achieved.

The invention discloses a direct contact type mineral oil dielectric cooling liquid and a preparation method thereof, the cooling liquid comprises the following raw materials: mineral type naphthenic base white oil, an antioxidant and a light stabilizer, aromatic hydrocarbon of the mineral type naphthenic base white oil is completely hydrogenated and saturated and does not contain corrosive sulfur, nitrogen, oxygen and other heteroatoms, and the refined naphthenic base oil has good environmental protection property and good corrosion resistance. And moreover, the problem that the cable becomes hard after being soaked in the cooling liquid is solved, the compatibility with other materials is good, and the cooling liquid can have good compatibility with materials of a liquid cooling system without adding cable compatibilizers such as oily epoxy resin and a dispersing agent. The mineral oil type dielectric cooling liquid disclosed by the invention is colorless, transparent, good in environmental protection property, good in flowing property, fireproof safety performance, heat-conducting property, insulating property and oxidation stability, free of acidic substances and corrosion, less in water absorption in a use process, good in stability, excellent in compatibility with IT equipment materials, power lines and network cables, and good in corrosion resistance. And yellowing due to light and heat is not easily caused.

The utility model discloses an induction cooker with an independent double-heating machine core system. The induction cooker comprises a shell seat, a magnet exciting coil assembly, heating machine cores and a cooling fan, the partition plate is transversely arranged between the two side plate walls and divides the space between the two side plate walls into a first installation area and a second installation area. The plurality of second mounting columns are provided with at least two ring groups, and the center of each ring group is staggered along the length direction and is used for mounting another excitation coil assembly at different positions; the two heating machine cores are arranged in the first installation area and the second installation area respectively. According to the utility model, the heating machine core can be respectively mounted in the first mounting area and the second mounting area without mutual interference, so that the wiring connection is facilitated, and the circulation and heat dissipation of heat dissipation airflow can be facilitated. Moreover, on a single shell seat platform, the arrangement of a plurality of furnace end spacing products can be realized, the types of production materials are reduced, and the production cost is reduced.

The invention discloses a flow battery graphite felt electrode modification method which comprises the following steps: fully mixing and grinding initial powder in a dry environment to obtain first mixed powder; adding a reagent for providing an oxygen source into the first mixed powder in batches, and stirring in a dry environment to obtain second mixed powder; adding a reagent for providing a nitrogen source into the second mixed powder in batches, and stirring in a dry environment to obtain third mixed powder; a graphite felt electrode is covered with the third mixed powder for calcination modification. The modification process and the operation process are simple, and modification can be completed only by preparing the mixed etching powder and then calcining the mixed etching powder. In addition, the modification cost is lower, and chemical reagents, conventional experimental equipment and the like which are low in price are used. Meanwhile, the method is skillful in that the selected O source and N source are strong etching agents, so that the etching effect is remarkably enhanced.

The invention relates to the technical field of intravenous drug configuration teaching, in particular to a teaching system for intravenous drug configuration based on deep learning, which constructs a three-dimensional scene and collects operation data of a user in a virtual environment by acquiring live-action video data of intravenous drug configuration. Through semantic segmentation, an operation track is tracked in combination with a long and short-term memory network, a variable path matrix is generated, an operation score is generated by using a convolutional neural network, wrong operation is identified in time, and real-time feedback is provided. According to the method, training can be carried out only through a computer or VR equipment without depending on a large number of sites and equipment, students are helped to carry out timely correction in each step of operation through model evaluation and real-time feedback, and the operation accuracy and the learning effect are improved. Difficulty gradient adjustment is carried out in combination with scores, it is ensured that the training difficulty is matched with the skill level of students, personalized teaching is achieved, and the teaching effect is improved.

The invention discloses modified flame-retardant polypropylene with high weather resistance and a preparation process, and relates to the technical field of polypropylene preparation, the flame-retardant polypropylene comprises the following raw materials by weight: 15-75 parts of polypropylene resin, 20-40 parts of glass fiber, 10-30 parts of a flame retardant, 1-10 parts of a charring agent, 1-10 parts of a compatilizer, 0.2-2 parts of surface acylating chlorination carbon black, 0.1-5 parts of an antioxidant, and 0.1-1 part of a light stabilizer. The flame-retardant weather-resistant polypropylene composite material with excellent performance and high temperature resistance is obtained by modifying polypropylene and simultaneously optimizing the weather resistance of the polypropylene, preferably selecting the weather-resistant agent matched with the flame retardant, further reasonably optimizing and selecting other components to reduce the material types and coordinating and compounding the components. Meanwhile, the flame retardance, the heat resistance and the weather resistance are improved, and the phenomena that an existing material formula and technological process are complex and the performance is single are solved.

The invention discloses a new energy automobile control box automatic production line which comprises a conveying line, a circulating conveying mechanism, a product carrier located on the conveying line, and an automatic feeding and discharging station, a box body cleaning station, a water channel airtightness testing station, an automatic glue filling station and a transformer amp which are sequentially arranged on the conveying line. An inductor mounting and locking station, a vacuumizing station, a curing and cooling station, a glue height and hardness detection station and a locking AC connector assembly amp; a high-pressure cover plate amp is mounted and locked; a sealant dispensing station is used for installing a copper bar assembly amp; a DC connector assembly locking station is used for installing a filtering small plate amp; a magnetic ring lock amp is arranged at a binding belt binding station; a filter small plate amp is locked; the first shielding case locking station is used for locking a second shielding case amp; a floating height detection station, a first heat-conducting gasket pasting station, a ceramic wafer gluing installation station and the like. The whole production line is provided with the RFID read-write / code scanning device, the use condition of each device and the production process data of products are monitored in real time, production and assembly are conducted in an assembly line mode, the automation degree is high, and the production efficiency is high.

The invention belongs to the technical field of automobile manufacturing, and particularly relates to a rivet welding connection process method. A rivet welding connection process method comprises the steps that a plate is obtained, and mounting holes are formed in the plate; providing a first riveting die, and installing a rivet on the first riveting die; the first riveting die pushes the rivet in the first direction, so that a riveting leg of the rivet is inserted into and extends out of the mounting hole; the first riveting die presses the riveting head of the rivet, so that the riveting shoulder of the rivet presses the plate; a second riveting die is provided, the second riveting die moves towards the plate in the second direction, and the end, away from the riveting head, of a riveting leg of the rivet is compressed so that a lock catch protruding out of the peripheral face of the riveting leg can be formed at the end; wherein the first direction is opposite to the second direction. According to the method, the problem that multi-layer plates made of heterogeneous materials such as ultrahigh-strength steel and aluminum are difficult to connect is solved, connection between ultrahigh-strength steel and multi-layer aluminum plates and steel plates or between ultrahigh-strength steel and carbon fibers and other heterogeneous materials can be achieved, and collinear production of a steel-aluminum multi-material hybrid vehicle body on a traditional steel vehicle body is achieved.

The invention relates to a water treatment technology, in particular to a liquid composite thallium removal agent and a preparation method and application thereof.The liquid composite thallium removal agent is prepared by the steps that soluble titanium salt and dilute sulphuric acid are evenly mixed to obtain a first mixed solution, and then an adsorption carrier and a titanium salt dispersion catalyst are added into the first mixed solution to obtain a second mixed solution; and heating the second mixed solution to boiling, then carrying out reflux cooling, and adjusting the pH value to alkalescence. The invention further discloses a matched thallium-containing wastewater thallium removal method using the liquid composite thallium removal agent. The process for removing thallium in the thallium-containing desulfurization wastewater is convenient, the thallium removal effect is good in stability, the cost is low, the adopted raw materials are environment-friendly agents, secondary pollution cannot be caused, and the method is suitable for treating large-scale thallium-containing wastewater.

The invention discloses a renewable high-pressure casting heat-treatment-free aluminum alloy and a preparation method and application thereof.The microstructure in an alloy body comprises an alpha-Al matrix, an Al-Si eutectic structure and a Fe-containing second phase, and the equivalent diameter of the alpha-Al matrix is smaller than or equal to 15 micrometers, the equivalent diameter of a pre-crystallization structure is smaller than or equal to 30 micrometers, and the equivalent diameter of the Al-Si eutectic structure is smaller than or equal to 30 micrometers. The area proportion of the pre-crystallization structure on an observation interface is smaller than or equal to 15%, the pre-crystallization structure comprises a primary alpha-Al phase and a primary Fe-rich phase, and the average equivalent diameter of the Fe-containing second phase is smaller than or equal to 10 micrometers. The preparation method has the following advantages that the cost is low, the mechanical property is excellent, the raw material source is wide, and the tolerance to impurity elements such as Fe content is high; a heat treatment process is not needed, and energy conservation and emission reduction are achieved.

The utility model relates to a double-pull opening and locking mechanism for an automobile, which is particularly suitable for an automobile front cover lock mechanism, can be matched with an automobile body lock pin to realize a double-gear locking function, and can realize a double-gear unlocking function by pulling a locking claw twice. The device is characterized by comprising a base plate, a locking claw A, a locking claw B and a clamping plate, the locking claw A is meshed with the main locking position and the semi-locking position of the clamping plate, the locking claw B is meshed with the transition locking position of the clamping plate, and the locking claw A cannot drive the locking claw B when being unlocked, so that the locking claw A can be independently opened to the maximum opening position when the locking claw B is blocked by the clamping plate; and when the locking claw A is reset from the maximum opening position, the locking claw B can be driven, so that the locking claw A and the locking claw B can be reset to initial positions together. The lock is simple and convenient to operate, the lock body is fixed in a modularized mode, few types are adopted, multiple platforms are universal, adaptability is high, and meanwhile the development period is shortened.

The invention discloses a blank making method for improving the texture uniformity of a TC18 titanium alloy thick plate type forge piece. The blank making method comprises the steps that firstly, Z-X-Y three-direction forging is conducted on an original bar; drawing out the blank subjected to three-direction forging in the X direction and the Y direction; and then the drawn blank is flattened and shaped in the X direction, the Y direction and the X direction in sequence. According to the method, Z-direction deformation is increased by adopting three-direction forging during blank manufacturing through a method of increasing the height deformation of the bar, so that the forge piece deforms in three directions in the blank manufacturing process, the difference of the deformation in the three directions of the blank in the blank manufacturing process is reduced, strong orientation texture segregation caused by the difference of the three-direction deformation is weakened, and the mechanical property of the forge piece has anisotropy; and the material is uniformly deformed in three directions, the effect of weakening the beta-phase texture is achieved, the requirement for improving the texture uniformity of the forge piece is met, and the mechanical property of the material is improved.

The invention discloses a surface nickel plating process for quartz glass, and aims to improve the adhesive force, uniformity and functional performance of a nickel plating layer, simplify the process flow and meet the environmental protection requirement. The process comprises the following steps: firstly, cleaning and roughening the surface of quartz glass, removing surface impurities through a 2% sodium hydroxide solution and a 10% hydrofluoric acid solution, and forming a microscopic rough structure; then treating in a sensitizing solution composed of stannous chloride and hydrochloric acid to enable the surface to adsorb stannous ions; then treating in an activating solution composed of palladium chloride and hydrochloric acid to form a catalytic active layer; then carrying out nickel plating reaction in a chemical nickel plating solution with the temperature of 85 DEG C and the pH value of 4.5, wherein the thickness of a plating layer is 5-10 microns; and finally, the waste liquid is neutralized and flocculated to realize environment-friendly discharge. The process is simple and convenient to operate, and the generated nickel coating is uniform and compact, has excellent conductivity and corrosion resistance, and can be widely applied to the fields of electronics, optics and chemistry.

The invention discloses a high-performance 4.5-micron electrolytic copper foil additive and application thereof, and belongs to the technical field of electrolytic copper foils. The additive comprises cerium-polyacrylamide composite microspheres, a sulfur-containing brightener, a leveling agent, a wetting agent and the like, the cerium-polyacrylamide composite microspheres are inorganic-organic composite materials formed by rare earth element cerium and polyacrylamide, and the cerium-polyacrylamide composite microspheres are prepared through an in-situ polymerization method. Monomer acrylamide of polyacrylamide grows around cerium ions in situ, so that the cerium ions are fixed around a polymer chain, and a relatively stable dispersion system is formed. The 4.5-micron electrolytic copper foil prepared by adopting the additive has good surface quality and relatively high tensile strength and ductility. Particularly, the tensile strength and the elongation performance can reach 400-500 MPa and 6% or above respectively, and the production and application reliability of the 4.5-micron copper foil is greatly improved.

The invention discloses a lifting device for a patrol robot. The lifting device comprises a lifting rod mechanism, a speed reducer for providing power for the lifting rod mechanism and a controller connected with the speed reducer. The lifting rod mechanism comprises a plurality of pipe bodies, a transmission mechanism, a sequential locking mechanism, a locking connecting mechanism and a rod body base. A transmission mechanism is arranged in the pipe body and comprises a lead screw arranged on the central axis of the pipe body, a plurality of nuts arranged on the lead screw in a sleeving mode and connected with the bottom of the middle pipe and the bottom of the top pipe respectively, and a lead screw non-return device. When the robot platform provides a 28V direct-current voltage for the controller and serial communication receives a lifting instruction, the control module controls the driving module to start the motor, and the motor drives the speed reducer to drive the lead screw to rotate, so that the middle pipe and the top pipe are driven to ascend and descend. The lifting device with the multi-stage lifting function is simple in structure, few in equipment type, low in cost, good in maintainability, wide in application scene and low in failure rate.

The invention discloses a collophanite gravity-flotation combined beneficiation backwater utilization method, which comprises the following steps: carrying out ore grinding and grading on collophanite, introducing into a reverse flotation magnesium removal process to obtain magnesium removal concentrate a and magnesium removal tailings b, carrying out gravity concentration on the magnesium removal concentrate a to obtain gravity concentration concentrate c and gravity concentration tailings d, and carrying out gravity concentration reverse flotation dealumination process on the gravity concentration concentrate c to obtain phosphate concentrate e and tailings f; and the direct utilization of the backwater refers to collecting the magnesium-removed tailings b, the phosphate concentrate e, the tailings f and the phosphate concentrate g, respectively thickening and filtering to obtain the backwater, feeding the backwater into a No.1 backwater pool, and directly returning the backwater to the processes of ore grinding, reverse flotation magnesium removal, reselection, reconcentration and reverse flotation dealumination for reuse. According to the method for utilizing the collophanite gravity-flotation combined mineral separation backwater, a process capable of reducing the treatment and utilization amount in the utilization of the separation backwater of the collophanite and impurities magnesium and aluminum contained in the collophanite is found, so that the backwater recycling in the whole process is realized, and the separation index of removing the impurities magnesium and aluminum from the collophanite is not influenced.

The invention belongs to the technical field of noble metal catalyst preparation, and particularly relates to a preparation method of high-purity tetraammineplatinum nitrate. According to the method, potassium tetranitroplatinate is prepared from chloroplatinic acid and potassium nitrite, then potassium hexanitroplatinate is prepared, and finally platinum nitrate tetraammine is prepared, so that the method uses fewer types of raw materials, does not use expensive reagents, has fewer steps, is simple and convenient to operate, is easy to realize large-scale production, and is suitable for industrial production. The yield of the prepared platinum tetraamminenitrate is greater than or equal to 94.1%, the purity of the platinum tetraamminenitrate is greater than or equal to 99.3%, and the platinum content is greater than or equal to 41.9%.