861results about How to "Less quantity" patented technology

The invention provides a process for preparing various nutritional ingredients from oats, and relates to the technical field of deep processing of oats. The process comprises the following steps: crushing and sieving oats to obtain oat bran; the method comprises the following steps: extracting oat bran through a supercritical extraction technology to obtain pretreated oat bran and an extract, and carrying out gradient membrane treatment and membrane ultrafiltration on the extract to obtain oat oil; extracting the pretreated oat bran through continuous sectional extraction equipment; after first-stage protein extraction, second-stage dextran extraction, third-stage immobilized enzymolysis and fourth-stage filler decoloration, the materials enter a system balance tank, and membrane separation and concentration are performed to obtain the oat beta-dextran. According to the invention, various nutrient substances such as oat beta-glucan, oat protein, oat oil and the like can be extracted at the same time, the defects in the prior art are overcome, the automation degree is high, and energy conservation and emission reduction are realized.

The invention provides a detoxification method and system based on nanofiltration treatment of lithium ore smelting slag, and the method comprises the following steps: step S1: carrying out acid leaching treatment on the lithium ore smelting slag by using an inorganic acid liquid, so that acid-soluble components in the lithium ore smelting slag are dissolved in the inorganic acid liquid to obtain an acid leaching liquid and detoxified smelting slag; s2, the acid leaching solution is subjected to oxidation treatment, metal ions with intermediate valence in the acid leaching solution are oxidized into metal ions with high valence, and an oxidized acid leaching solution is obtained; s3, carrying out nanofiltration treatment on the oxidized pickle liquor to intercept high-valence metal ions in the oxidized pickle liquor so as to obtain concentrated liquor and permeate liquor; s4, using the permeate liquid as the inorganic acid liquid in the step S1 for acid leaching treatment. According to the method, toxic components in the lithium ore smelting slag can be fully separated, and resource utilization is easier.

The invention discloses a leaching reaction kettle. The leaching reaction kettle comprises a reaction tank, a stirring assembly, a guide cylinder and an aeration pipe. The stirring assembly comprises a stirring part; the flow guide cylinder is arranged in the reaction tank, the flow guide cylinder divides the reaction tank into an inner side space and an outer side space, the flow guide cylinder is arranged around the stirring part and defines the inner side space, the stirring part is used for driving fluid in the inner side space to flow upwards, the flow guide cylinder is provided with an upper opening and a lower opening, and the upper opening is communicated with the lower opening. The inner side space and the outer side space are communicated through the upper opening and the lower opening; and the aeration pipe is used for introducing reaction gas into the lower part of the inner side space. The leaching reaction kettle can improve the leaching efficiency of materials and the utilization rate of reaction gas.

The invention belongs to the field of nutrient substance research, and particularly relates to application of a nutrient composition to regulation of brain immunity. The invention provides application of a nutritional composition in preparation of food for regulating brain immunity. Wherein the nutritional composition comprises the following necessary components: lactoferrin and fucosyllactose, and in the nutritional composition, the mass ratio of the lactoferrin to the fucosyllactose is 1: (0.1-30). Research finds that after lactoferrin and fucosyllactose are combined according to a certain proportion, the lactoferrin and fucosyllactose have a synergistic effect of regulating brain immunity. Experimental data show that after the combination of lactoferrin and fucosyllactose is used for treating the BV2 cells, the trend that the BV2 cells are differentiated into M2 phenotype microglial cells is higher than the trend that the BV2 cells are differentiated into M1 phenotype microglial cells, and the amount of secreted inflammatory factors is obviously reduced.

The invention belongs to the technical field of material transportation, and particularly relates to intelligent flour rotary transportation equipment which comprises a flour conveyor. The flour conveyor comprises a conveying pipe; a servo motor is fixedly mounted at the end part of the left side of the conveying pipe; an auger is rotationally mounted in the conveying pipe; a hopper is fixedly mounted above the feeding hole; a discharging port is formed in the side, away from the servo motor, of the conveying pipe and located in the bottom of the conveying pipe. A discharging pipe is fixedly mounted below the discharging opening; the discharge pipe is formed by combining two half pipes, namely a left half pipe and a right half pipe; the left half pipe is fixedly connected to the material conveying pipe; a sliding barrel is fixedly connected to the surface of the side, away from the left semicircle, of the right half pipe and slides on the outer ring face of the conveying pipe. A control assembly is arranged on the side, close to the hopper, of the sliding barrel. By arranging the movable sliding barrel, the sizes of the discharging port and the discharging pipe can be indirectly increased, and therefore the situation that the discharging port and the discharging pipe are blocked is avoided.

The invention discloses an arsenic removal method for purifying waste acid, and belongs to the technical field of sulfuric acid preparation. The method comprises the following steps: settling wastewater, and carrying out filter pressing on slurry through a first filter press; in the first-stage reaction tank, the waste acid reacts with a desulfurizing agent from a sodium hydrosulfide preparation tank, and after the reaction is completed, the waste acid is sent to a first-stage FBL filter to be filtered; in the second-stage reaction tank, the waste acid reacts with a desulfurizing agent from the sodium hydrosulfide preparation tank, and after the reaction is completed, the waste acid is sent to a second-stage FBL filter to be filtered; the filtrate of the second-stage FBL filter is sent to a dynamic wave scrubber for recycling; a flocculating agent is added into the first-stage FBL filter and the second-stage FBL filter; tail gas of the first-stage reaction tank, the first-stage FBL filter, the second-stage reaction tank, the first-stage FBL filter and the sodium hydrosulfide preparation tank is sent to a spray tower, washing liquid containing sodium hydrosulfide and sodium sulfide in the spray tower is sent to the sodium hydrosulfide preparation tank, and sodium hydrosulfide solids are added into the sodium hydrosulfide preparation tank.

The invention relates to the technical field of hose cutting, in particular to hose cutting equipment and application of the hose cutting equipment in ultraviolet curing hose production, the hose cutting equipment comprises a mounting frame and a cutting knife, and is characterized in that an adjusting device is arranged at the upper end of the mounting frame, a cutting assembly is rotationally arranged at the side end of the adjusting device, and the cutting knife is arranged at the lower end of the mounting frame. The cutting knife is located in the cutting assembly, the cutting assembly comprises a flattening roller, by arranging a pressure sensor, the flattening roller, a grinding piece and other components, when the ultraviolet light curing hose needs to be cut, the flattening roller descends and moves in a reciprocating mode by controlling a pump body and a motor, and then the ultraviolet light curing hose is cut. According to the ultraviolet light curing hose rolling device, the flattening roller conducts reciprocating rolling on a cutting area of an ultraviolet light curing hose, the rolling condition of the ultraviolet light curing hose can be judged through the assistance of the pressure sensor, and in the process that the flattening roller descends and reciprocates to roll the ultraviolet light curing hose, the rolling condition of the ultraviolet light curing hose can be judged through the assistance of the pressing ball, the pressing rod and other components. And the cutting knife can be polished by the polishing piece.

The utility model relates to the technical field of resin processing, in particular to a device for filling fine treatment resin into a regeneration tower, which comprises a box body and a regeneration tower body, the box body is fixedly connected with the surface of the regeneration tower, a quick impact device is arranged in the box body, two sliding rods are fixedly connected with the inner surface of the box body, and the two sliding rods are arranged on the box body. According to the device for filling the regeneration tower with the fine treatment resin, the resin is added into the regeneration tower body through the feeding pipe through the cooperation of the rapid impact device and the feeding pipe, a part of the resin is adhered to the inner surface of the feeding pipe during filling, and the resin is prevented from entering the regeneration tower body through the feeding pipe; an output shaft of a first motor rotates to drive a first straight rod to rotate, the first straight rod rotates to drive a second straight rod to rotate synchronously, so that a feeding pipe can vibrate, normal discharging of resin can be guaranteed, the feeding pipe can vibrate by impacting the feeding pipe, and the feeding effect of the device is guaranteed.

The utility model relates to the field of harvesting machinery, and discloses a harvesting machinery, a threshing device and a concave grid thereof, the concave grid comprises a supporting frame, a plurality of longitudinal partition plates (3) and a plurality of grid strips (4), the longitudinal partition plates (3) and the grid strips (4) are connected to the supporting frame and mutually staggered and extend to form a grid, and a plurality of slots (31) which are distributed at intervals are respectively formed in each longitudinal partition plate (3). The grate bars (4) penetrate through the slots (31) to extend, and the portion, between every two adjacent slots (31), of each grate bar (4) protrudes towards the radial inner side. In the process that crop straw rotates along with the threshing cylinder, the concave grid is beneficial to separation of grains from the straw, the grain separation rate is increased, meanwhile, the amount of crushed straw and weeds carried in the separated grains is reduced, the risk that the grains are crushed or the surfaces of the grains are damaged is reduced, and the crushing rate and the loss rate of the grains are remarkably reduced.

The invention discloses a quick self-cleaning fish bucket culture pond which comprises a fish bucket pond, the fish bucket pond comprises a cylindrical bucket body and an inverted-cone-shaped bucket bottom, a sewage discharge pipe is arranged at the bottom of the inverted-cone-shaped bucket bottom, a water discharge pipe is arranged on the lower portion of the cylindrical bucket body, and a plurality of water pushing pipes are arranged on the outer side of the fish bucket pond. The bottom of the water pushing pipe is connected with an external water inlet pipe, a sewage draining siphon device is arranged in the middle of the fish barrel pool, and an opening is formed in the center of the bottom of the inverted-cone-shaped barrel bottom. Through the design of the cylindrical-conical combined working area of the fish bucket culture pond, the water pushing pipe and the pollution discharge siphon device of the fish bucket pond, fish excrement and residual feed can be quickly sucked, discharged and separated from culture water, and conversion of solid organic pollutants into water-soluble pollutants in the water is greatly reduced; meanwhile, a culture area and a pollutant precipitation and solid-liquid separation area generated in culture are combined into a whole, so that the construction space and the construction cost are greatly saved.

The utility model discloses an environment-friendly concrete processing crushing device for building construction, which comprises a box body, two symmetrically arranged crushing rollers are arranged in the box body, supporting rods are fixedly connected in the crushing rollers, two ends of the supporting rods respectively penetrate through the crushing rollers and are rotatably connected with the inner side wall of the box body, and the supporting rods are fixedly connected with the box body. Two motors corresponding to the crushing rollers are fixedly connected to the outer side wall of the box body, the tail ends of output shafts of the motors penetrate through the box body and are fixedly connected with the supporting rods, the output shafts of the motors are rotationally connected with the box body, and a discharging opening communicated with the interior of the box body is formed in the position, close to the bottom, of the left side wall of the box body; and the left side wall of the box body is rotationally connected with a second baffle plate corresponding to the discharge port. Through the arrangement of the baffle, the crushing roller and other mechanisms, the amount of dust flying into the air is greatly reduced, the influence on the respiratory tract of a worker is reduced, and therefore the purpose of environmental protection is achieved.

The invention relates to a cold precipitation-salting-out integrated ammonium chloride preparation method and system, which comprises the following steps: reducing the temperature of an ammonium chloride-containing solution generated in a combined alkali production process to below 10 DEG C, then adding sodium chloride into the solution while stirring until an ammonium chloride saturated salt solution is formed, standing, then cooling in a stepped manner, and after ammonium chloride crystals are completely separated out, obtaining ammonium chloride. And centrifuging to obtain an ammonium chloride product. Compared with a traditional separation preparation method of cold precipitation and salting-out in sequence, the method has the advantages that the ammonium chloride-containing solution generated in the combined alkali production process is subjected to cold precipitation and salting-out at the same time through one-step operation, so that the process flow is simplified, the time is greatly saved, the production efficiency and the yield are improved, the equipment investment is reduced, and the process operation cost is reduced; and the yield is improved.

The invention provides an inorganic fiber spraying device for a plateau severe cold area, and belongs to the technical field of inorganic fiber spraying. The inorganic fiber spraying device in the plateau severe cold area comprises a material pipe, a support is installed at the front end of the material pipe, a conical cover is arranged at the front end of the support, a hot air cavity is formed in the conical cover, an annular opening is formed in the bottom end of the conical cover, a flow guide cover is connected to the rear end of the conical cover, a flow guide fan is arranged in the flow guide cover, and a hot air pipe is connected to the rear end of the flow guide cover. The inner wall face of the conical groove is arranged to be in a step shape in the axial direction, hot air holes are formed in the top face of the step at equal intervals in the circumferential direction, the front end of the support is sleeved with the flow guide cover and the conical cover, the front end of the support is provided with a channel opening used for inorganic fibers in the material pipe to enter the conical cover, and the inner diameter of the channel opening is larger than the outer diameter of the material pipe.

The invention discloses an extinction cationic polyester fiber, which comprises cationic polyester, titanium dioxide, polyethylene and a compatilizer, and the titanium dioxide, the polyethylene and the compatilizer are added in a blending manner. The invention also aims at disclosing a preparation method of the extinction cationic polyester fiber, which comprises the following steps: preparing the compatilizer, drying the cationic polyester, the titanium dioxide master batch, the polyethylene slice and the compatilizer, blending, and carrying out screw melting to obtain an extinction cationic polyester melt; the delustering cationic polyester melt is metered, extruded by a spinneret plate, cooled, oiled and wound to prepare POY (polyester pre-oriented yarn), and the POY is subjected to network, heating stretching, false twisting, heat setting and winding forming to prepare the delustering cationic polyester fiber, namely the delustering cationic DTY. The preparation method disclosed by the invention is good in controllability, and the amount of titanium dioxide is reduced, so that the purposes of stable production and excellent product performance are achieved.

The invention relates to cation-doped iron phosphate as well as a preparation method and application thereof, the preparation method comprises the following steps: firstly, mixing phosphoric acid containing iron and magnesium with an extraction system for extraction and aluminum removal to obtain aluminum-removed phosphoric acid; mixing the aluminum-removed phosphoric acid obtained in the step (1), an iron source and an oxidizing agent to obtain iron phosphate dihydrate; and finally, calcining the iron phosphate dihydrate obtained in the step (2) to obtain Mg < 2 + > doped iron phosphate. The Mg < 2 + >-doped iron phosphate is prepared by doping magnesium ions into crystal lattices of iron phosphate to generate defects by utilizing iron ions and magnesium ions in the iron-containing magnesium phosphate, the yield is preferably up to 89.89% or above, the utilization rate of Mg in the raw materials is up to 88.16% or above, the utilization rate of Fe is preferably up to 98.70% or above, and the Mg < 2 + >-doped iron phosphate has the advantages of high electrochemical performance, simple preparation process and low cost. And a low-cost high-quality raw material is provided for the lithium iron phosphate material.

The invention relates to a ground cable high-frequency signal detection method, system, equipment and medium, adopts a compressed sensing (CS) technology, remarkably reduces the sampling data volume through sparse representation and compressed sampling of a cable reflection signal, and adopts a sparse signal reconstruction algorithm to realize efficient reconstruction of the cable reflection signal, thereby improving the detection accuracy of the high-frequency signal of a ground cable and improving the detection accuracy of the high-frequency signal of the ground cable. The problems that in the prior art, the signal processing speed is low, the anti-interference capacity is poor, and the detection precision is not high are solved. The system is composed of a signal acquisition module, a compression sampling module, a signal reconstruction module and a fault detection and positioning module, can accurately judge the type and position of a cable fault in a complex environment, and is especially suitable for online monitoring of a long-distance cable. The device and the medium detect the high-frequency signal of the grounding cable based on the above detection method and system, compared with an existing time domain reflectometry (TDR), the detection sensitivity, the anti-interference capability and the processing speed are higher, cable fault diagnosis and attenuation compensation can be completed under the condition of no reference data, and the method and the system have good application prospects. A rapid and reliable solution is provided for cable state monitoring.

The invention discloses a distillation separation mechanism and method of a cyanate ester synthesis reaction device, and belongs to the field of cyanate ester synthesizing.The mechanism comprises a distillation assembly, a first collection assembly for collecting cyanogen chloride and hydrogen chloride, a second collection assembly for collecting bisphenol compounds and a third collection assembly for collecting cyanate ester, in the second collection assembly, a second condensation pipe is connected between a second collection cylinder and the distillation cylinder, a second condensation cylinder is sleeved on the pipe, a sliding plate in the second collection cylinder is connected with a piston rod and an insertion rod, and a tension spring is arranged between the piston rod and a piston cylinder. Pressure passes through the branch pipe to enable the piston rod to move downwards, the sliding plate to descend, the volume of the communication space to descend, boiling is slowed down, the insertion rod moves downwards to enable the second collection barrel to ascend, the condensation pipe to incline and liquid drops to flow back, and the cyanate collection amount is ensured.

The invention relates to the technical field of toilet waterproofing, and provides a toilet waterproof structure and a construction method thereof.The toilet waterproof structure is arranged at the junction of a dry area finished surface and a wet area finished surface and sequentially comprises a threshold stone, a bonding layer arranged on the lower surface of the threshold stone and a waterproof layer arranged below the bonding layer from top to bottom; the upper surface of the threshold stone is flush with the upper surface of the dry area finished surface, the upper surface of the threshold stone is higher than the upper surface of the wet area finished surface, and the waterproof layer is laid on the upper surface of the structure base layer; the two sides of the waterproof layer extend to the positions below the dry area finished face and the wet area finished face respectively, and the waterproof layer comprises a first area arranged below the wet area finished face, a second area arranged at the junction of the threshold stone and the wet area finished face, a third area arranged below the threshold stone and a fourth area arranged below the dry area finished face. The waterproof structure has the beneficial effect that the waterproof effect of the doorsill of the toilet is improved.

The invention relates to the technical field of precision casting of turbine blades, in particular to a ceramic core for a nickel-based superalloy isometric crystal hollow turbine blade and a preparation method of the ceramic core. The ceramic core is prepared by mixing refractory powder and a paraffin-based plasticizer and then sintering the mixture at a high temperature, and the mass ratio of the refractory powder to the paraffin-based plasticizer is (75-85): (15-25); the refractory powder is composed of quartz glass powder, alumina powder and natural crystalline flake graphite, and the mass ratio of the quartz glass powder to the alumina powder to the natural crystalline flake graphite is (72-77): (20-25): (0.5-3); the paraffin-based plasticizer is prepared from refined paraffin, beewax and low-density polyethylene, and the mass ratio of the refined paraffin to the beewax to the low-density polyethylene is (40-50): (40-50): (5-10). The natural flake graphite is creatively added into the raw materials of the ceramic core, so that the flowability of slurry is improved, the high-temperature bending strength of the ceramic core is improved, and the depoling performance of the mold core is improved.

The utility model relates to an environment-friendly epoxypropane production device and belongs to the field of energy-saving and environment-friendly chemical equipment. The environment-friendly epoxypropane production device is characterized in that the production device comprises a chlorohydrination reaction device and a saponification reaction device located at the downstream of the chlorohydrination reaction device; the sedimentation device is positioned at the downstream of the saponification reaction device; the waste liquid recycling device and the filtering device are respectively positioned at the downstream of the sedimentation device; the filter residue recycling device is positioned at the downstream of the filtering device, and the discharging end of the filter residue recycling device is connected with the feeding end of the chlorohydrination reaction device. The production device disclosed by the utility model not only reduces the concentration of hydrogen chloride in a liquid-phase product of a chlorohydrination reaction and the dosage of lime milk in a saponification reaction, but also remarkably reduces the amount of filter residues needing to be additionally treated, so that the production efficiency is improved, environmental friendliness is promoted, more effective cost control is realized, and the production cost is reduced. Therefore, the production cost of the epoxypropane is greatly reduced, and the economic advantage is remarkable.

The invention provides a protein degradation targeting chimera based on G-quadruplex RNA (Ribonucleic Acid) as well as a preparation method and application of the protein degradation targeting chimera. The structural general formula of the protein degradation targeting chimera is G-L-E, wherein G is G quadruplex RNA specifically combined with mammal fragile X hypophrenia protein (FMRP), E is a ligand of micromolecule E3 ubiquitination ligase, and L is a connecting arm between the G quadruplex RNA and the ligand of the micromolecule E3 ubiquitination ligase. The protein degradation targeting chimera provided by the invention has the advantages that the stability in an in-vivo environment and the capability of entering cells are greatly improved, and the protein degradation targeting chimera also has the capabilities of efficiently degrading FMRP and changing a secretion mode of cancer cells, so that a lot of convenience is provided for the development of nucleic acid PROTAC drugs.

The invention relates to a 45-degree double-shaft butterfly valve rust removal device, and belongs to the technical field of rust removal, the 45-degree double-shaft butterfly valve rust removal device comprises a workbench, and further comprises a bearing mechanism, a dust removal mechanism and a dust removal mechanism; and a driving mechanism. According to the grinding device, by means of the particularity of the shape of the 45-degree butterfly valve body, the 45-degree butterfly valve body can extrude a wiping ball during grinding, and then a cleaning mechanism works to inject grinding and polishing liquid between the inner surface of the 45-degree butterfly valve body and the grinding face of a grinding plate; according to the grinding and polishing device for the 45-degree butterfly valve body, when the 45-degree butterfly valve body is ground, grinding and polishing liquid is only injected into the grinding portion of the 45-degree butterfly valve body, the amount of the grinding and polishing liquid is saved, waste of the grinding and polishing liquid is reduced, in addition, when a wiping ball is separated from the 45-degree butterfly valve body, a cleaning mechanism can blow air to the grinding face of a grinding plate, and the grinding effect is improved. And the separation of scraps left on the polishing surface of the polishing plate due to polishing is promoted, so that the polishing and derusting quality of the 45-degree butterfly valve body is ensured.

The invention relates to the technical field of antibiotic mushroom dreg treatment, in particular to a method for reducing antibiotic mushroom dreg. The method comprises the following steps: drying granular antibiotic mushroom dregs until the moisture content is 10-28% by adopting a hot air drying mode; the temperature of the hot air drying is 52-58 DEG C. According to the method, hot air drying is adopted, the temperature condition of hot air drying is limited, the problems caused by incineration treatment in the antibiotic mushroom dreg treatment process can be solved, the antibiotic mushroom dreg reduction efficiency is high, and the reduction rate reaches up to 53%. The reduction equipment is used for treating the antibiotic mushroom dregs, the hot air drying process is totally closed, no waste gas is discharged, the chemical properties of the mushroom dregs are not changed in the reduction process, no secondary pollution is generated, the quantity of the air-dried mushroom dregs is small, the mushroom dregs are easy to package, store, transfer and follow-up further harmless incineration standard treatment, and the ecological environment and human health are protected. The strict environmental protection control requirement is met, and the economic benefit is very considerable.

The invention discloses a preparation method of a CoNC catalyst for preparing ethylene glycol from ethylene, and belongs to the field of ethylene oxidation. The method comprises the following steps: firstly, respectively dissolving cobalt nitrate hexahydrate, zinc nitrate hexahydrate and dimethylimidazole in methanol, uniformly mixing and stirring the two solutions for one night to obtain a purple turbid liquid, centrifugally washing and drying the turbid liquid to obtain a purple solid, carrying out high-temperature calcination for 3 hours in an argon atmosphere, and then grinding to obtain the CoNC catalyst. The synthesis method is simpler than the industry, and the synthesized material is resistant to high temperature and good in stability, shows better performance in a test of preparing ethylene glycol through electro-catalysis of ethylene, provides a new thought for a reaction of converting ethylene into ethylene glycol, and has a good industrial prospect.

The invention provides an air conditioner outdoor unit, an air conditioner and a control method thereof.The air conditioner outdoor unit comprises an outdoor unit shell, the outdoor unit shell comprises a base plate, a top cover and side plates, the base plate, the top cover and the side plates jointly define an internal containing space of the outdoor unit shell, and the side plates comprise the front side plate, the rear side plate, the left side plate and the right side plate; an air outlet, a first air inlet and a second air inlet are formed in each side plate, and a plurality of shutter blades capable of being controlled to be opened and closed are arranged in each air inlet. The corresponding adjustment of the air inlet and outlet quantity and the real-time air direction of each air inlet and outlet is realized by selectively controlling the opening and closing of each shutter blade on each side plate and the rotation angle, so that the situation that the rotation resistance of the outer fan is increased due to the fact that too much airflow with high air speed in the external environment enters the internal accommodating space can be prevented; and therefore, burnout of the motor or protection shutdown of the air conditioner caused by locked-rotor is prevented, reliable operation of the air conditioner under the strong wind weather conditions such as typhoon days is ensured, and the use experience of a user is improved.

The invention relates to the technical field of aluminum alloy materials, in particular to an aluminum alloy material, an aluminum alloy conductor wire core and a preparation method and application of the aluminum alloy conductor wire core. The aluminum alloy material comprises, by mass, 0.3%-1.0% of iron (Fe), 0.03%-0.2% of magnesium (Mg), 0.1%-0.8% of manganese (Mn), 0.08%-0.3% of zirconium (Zr), 0.004%-0.03% of boron (B), 0.015%-0.65% of rare earth (RE), 0-0.12% of silicon (Si) and the balance aluminum (Al) and inevitable impurities, the single impurity is not larger than 0.03%, and the sum of the impurities is not larger than 0.1%. Wherein the rare earth (RE) is prepared from the following components in percentage by mass: 0.003 to 0.1 percent of lanthanum (La), 0.004 to 0.15 percent of cerium (Ce) and 0.008 to 0.4 percent of scandium (Sc). The prepared aluminum alloy material has the characteristics of high conductivity, high strength, heat resistance, corrosion resistance and good fracture and impact toughness, is very suitable for being used as a cable conductor, and is particularly applied to places with high requirements on high temperature, vibration, movement, corrosion and the like, such as power cables, electrical connecting wires, drag chain cables applied to metal smelting places and the like.

The invention discloses a photosensitive polyimide photoresist composition with high hydrophobicity. The photosensitive polyimide photoresist composition comprises polyamide acid resin, diazonaphthoquinone sulfonate, a thermal crosslinking agent, a hydrophobic agent, a surfactant, a dissolution accelerator and a solvent. The hydrophobic agent used in the photosensitive polyimide photoresist composition can reduce the adsorption of moisture in the production and storage process on one hand, so that the shelf life is prolonged; and on the other hand, the amount of water adsorbed on the photoresist film can be reduced, and the interaction between water and nitrogen molecules in the IUV process is reduced, so that the generated nitrogen is smoothly diffused out of the film surface, and the film surface does not generate bubbles.

The invention discloses a multilayer sampling device for river flow sand content detection, and relates to the technical field of river flow sand content detection.The multilayer sampling device comprises a sampling frame, and the positions, close to the two sides, of the outer surface of the lower end of the sampling frame are fixedly connected with inserting columns used for being fixed into a river; the connecting assembly is arranged between the threaded rod and the sampling barrel, the sampling depth of the sampling barrel can be adjusted in a unified mode, meanwhile, the distance between every two adjacent sets of sampling barrels can be adjusted, the diversity of sampling data is increased, and on the basis, sand filtering cloth is arranged in the sampling barrel, so that the sampling efficiency is improved. River water enters the sampling barrel through the water inlet hole, silt and impurities in the river water are blocked by the sand filtering cloth, and compared with traditional sampling equipment which collects the sand grains through natural precipitation of the sand grains in the river water, the amount of the sand grains flowing out of the sampling barrel along with the river water is reduced, and the data collection precision is improved.

The invention discloses a bearing box for a non-driving end of a pump, and belongs to the field of multi-stage centrifugal pumps. The bearing box comprises a box body, a pump shaft partially extends into the box body, a first space and a second space which are arranged side by side in the axial direction of the pump shaft are formed in the box body, a rolling bearing is arranged in the first space, and a sliding bearing assembly is arranged in the second space; the sliding bearing assembly is matched with the box body in the radial direction, is connected and positioned through a cylindrical pin in the circumferential direction, is arranged outside the pump shaft in a sleeving mode and is used for bearing radial force of the pump; the rolling bearing is fixedly arranged on the pump shaft in a sleeving mode and used for bearing axial force of the pump. The bearing box for the non-driving end of the pump is convenient to install and maintain and low in cost.

An electrode surface treatment apparatus according to an embodiment of the present disclosure includes: a guide roller configured to contact an electrode foil moving in a longitudinal direction and to support the electrode foil so as to guide a movement of the electrode foil; and a plasma unit configured to perform surface treatment on the electrode foil by spraying plasma onto the electrode foil while the electrode foil moves.