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36results about How to "Address technical deficiencies" patented technology
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Gantry type programmable control girth welding machine
InactiveCN103567669ARealize reciprocating swingRigid and preciseWelding/cutting auxillary devicesAuxillary welding devicesAutomatic controlMotor drive
The invention relates to a gantry type programmable control girth welding machine, which comprises an automatic control system, a transmission system, a jacking mechanism and a welding gun movement control mechanism, wherein the welding gun movement control mechanism comprises a transverse displacement device, a longitudinal lifting device and a swinging device. In the transmission system, a transmission shaft is provided with a spline and a spline gear, so a main shaft and the transmission system are engaged or disengaged, to manually rotate the welding piece without load. In the working piece jacking mechanism, the welding piece is subjected to flexible compression by an air cylinder pushing jacking needle, to realize the anti-loosening purpose. In the longitudinal lifting device, a stepping motor drives a screw rod to rotate, so the welding gun is lifted to the proper place. In the swinging device, the stepping motor drives a swinging screw rod to rotate forward and reversely, so the reciprocating swinging of the welding gun head is realized, and the technical defects in the existing gantry type programmable control girth welding machine are solved. The welding machine has the advantages that the automation degree is high, the welding quality is high, the operation is convenient, the safety and the reliability are realized, and the like.
Owner:沈浩
Inland river ship freeboard detection method based on deep enhanced neural network
ActiveCN109375235AImprove the accuracy of draft recognitionLower lidar requirementsNeural architecturesElectromagnetic wave reradiationRadarAlgorithm
The invention discloses an inland river ship freeboard detection method based on a deep enhanced neural network. A laser radar and a linked tripod head are set on a high pole on the bank of a river, the tripod head drives the laser radar to adjust a detection height and an orientation angle to scan one side of the ship, ship contour images under different detection parameters are obtained, a reinforcement learning neural network is used as an approximator of a reinforcement learning value function, and ship contour information is input into the reinforcement learning neural network to determine the actions of the current laser radar and the linked tripod head to correctly identify the freeboard of a current ship. According to the method, based on the recognition capability of a convolutional neural network for image recognition, a reinforcement learning algorithm is combined to construct the deep enhanced neural network, the existing technical deficiencies of a deep learning network inthe field of ship overload recognition are overcome, the detection ability of the laser radar for ship freeboard information is improved, and therefore, a technical support is provided for the automatic identification of inland river ship draught.
Owner:WUHAN UNIV OF TECH
Distributed cloud computing center selection method and application thereof
ActiveCN103997515AReduce communication costSatisfy the communication costTransmissionSpecial data processing applicationsComputing centerUser needs
The invention discloses a distributed cloud computing center selection method, belongs to the technical field of cloud platform data processing, and provides a solution for the problem that computing center selection is high in communication cost in the prior art. According to the method, the computing center of a sub-graph is selected based on the length of the longest path in the sub-graph, and all the vertexes of the sub-graph pass the longest path and only pass the longest path once. The technical defect of a random strategy and a greedy strategy in computing center selection is effectively overcome, virtual machines required by users can be provided, the performance and reliability required for cloud mass data processing are improved, the cost of communication between computing centers is reduced, and the overall unnecessary resource consumption is reduced.
Owner:西安电子科技大学昆山创新研究院 +1
Face analysis device and method
PendingCN108073876ANetwork is easy to optimizeAddress technical deficienciesImage enhancementImage analysisResidual BlocksConvolution
The invention provides a face analysis device and method. The face analysis method comprises that a to-be-detected sample is input to a residual error network module; the trained residual error network module is used to process the to-be-detected sample, the residual error network module comprises residual error blocks which are arranged from the input to the output direction and combined sequentially, and output of the Nth predetermined residual error block among the residual blocks combined sequentially is sent to a residual error deconvolution network module; and the trained residual errordeconvolution network module is used to process the output of the Nth residual error block to obtain a classifcaitn graph, the residual error deconvolution network module comprises residual error deconvolution blocks combined sequentially, and the residual error deconvolution blocks correspond to the first to Nth residual error blocks respectively. Via the face analysis method, the face analysis performance can be improved, and the model size in the method is reduced greatly.
Owner:BEIJING SAMSUNG TELECOM R&D CENT +1
Method for absolutely measuring external quatum efficiency of solar batteries via direct current method
InactiveCN101694511AImprove stabilityGood repeatabilityContactless testingHigh signal intensityElectrical battery
Disclosed is a method for absolutely measuring external quatum efficiency of solar batteries via a direct current method. An optical portion consisting of a xenon light source, a focusing lens and a monochrometer provides monochromatic light, an optical closed bin and a dark room shield stray light so as to provide a work environment of the solar batteries, a source meter detects short circuit photocurrent of sample batteries, a monochromatic light power meter detects power of incident monochromatic light, and a micro-computer performs instrument control and data treatment, thereby finally obtaining a single-wave long external quatum efficiency curve line of the solar batteries. The method focuses on direct-current measurement, is absolute measurement and is adaptable to various types of solar batteries. The method has the advantages of high integration level and being precise, reduces cost of solar battery parameter measuring equipment, overcomes technical shortages in a traditional quatum efficiency measuring method, increases signal strength and precision, can provide more comprehensive battery parameter information, and is used for guiding improvement of the preparation technical and performing study of portions of battery mechanisms.
Owner:NANJING UNIV
Novel coronavirus SARS-CoV-2 safe replication subsystem and application thereof
ActiveCN112029781AAddress technical deficienciesOperational securityCompound screeningSsRNA viruses positive-senseReporter geneMolecular biology
The invention discloses a novel coronavirus SARS-CoV-2 safe replication subsystem and application thereof in screening anti-SARS-CoV-2 drug virus drugs. The novel coronavirus SARS-CoV-2 safe replication subsystem specifically comprises a non-structural protein for encoding novel coronavirus SARS-CoV-2, 5' UTR and 3' UTR of the novel coronavirus SARS-CoV-2, a transcriptional regulation area and a reporter gene, wherein the transcriptional regulation area and the reporter gene can be acted by the non-structural protein of the novel coronavirus SARS-CoV-2. By means of the SARS-CoV-2 safe replication subsystem, high-throughput screening of the anti-SARS-CoV-2 drugs and drug efficacy verification of the drugs can be conducted under the condition that the SARS-CoV-2 safe replication subsystem does not depend on a biosafety three-level laboratory, and operation is easy and convenient.
Owner:SUN YAT SEN UNIV
Multi-freedom-degree lifting mechanical arm
The invention discloses a multi-freedom-degree lifting mechanical arm. The mechanical arm comprises a base, a stand column arranged on the base and a mechanical arm structure arranged on the stand column; the mechanical arm structure comprises a first rotating mechanism, a second rotating mechanism, a vertical sliding mechanism, a cantilever mechanism, a speed reduction motor, a swing arm mechanism and a machine head. The mechanical arm is reasonable in structural design, use of an oil pressure cylinder is reduced, and therefore technical shortcomings brought by the oil pressure cylinder can be overcome, and work efficiency is improved to a certain degree; meanwhile, the work range of a lifting machine can be effectively increased, positioning precision of heavy object lifting can be effectively improved, the noise of the lifting machine can be reduced, use stability and safety coefficients are improved, application is high, and practicability is good.
Owner:广东英达思迅智能制造有限公司
Evaluation method for comprehensive performance of a pump device water outlet runner
ActiveCN109657327AAvoid the impact of civil construction investmentOvercoming the drawbacks of mutual interference effectsGeometric CADSpecial data processing applicationsEngineeringEnergy consumption
The invention discloses an evaluation method for comprehensive performance of a pump device water outlet runner. According to the method, based on a CFD three-dimensional constant numerical calculation result of a pump device, sub-item evaluation indexes of five hydraulic performances of a water flow channel are determined, and according to an initial setting scheme of a water outlet flow channel,sub-item evaluation indexes of four structures based on three-dimensional design of the water outlet flow channel of the pump device are determined; And converting the determined 9 sub-item evaluation indexes of the water outlet flow channel to obtain an objective function of the comprehensive performance of the water outlet flow channel, thereby obtaining the evaluation grade of the comprehensive performance of the water outlet flow channel. The defect that only the hydraulic performance of the pump station water outlet flow channel is evaluated in the prior art is overcome, the optimal selection of the water outlet flow channel in the initial setting stage of the pump station is facilitated, the energy consumption of the pump station can be further reduced, and the purposes of energy conservation and consumption reduction are achieved.
Owner:YANGZHOU UNIV
Transfusion set with multilayer composite conduit
InactiveCN101829377AAddress technical deficienciesSimple structureInfusion devicesOther medical devicesDropping funnelPolypropylene
The invention relates to a transfusion set with a multilayer composite conduit, which comprises a bottle plug puncture set, a conduit, a dropping funnel, a transfusion needle and the like, and is characterized in that the conduit is a hollow hose which is formed by co-extruding at least two high polymer material layers comprising an inner layer and an outer layer, wherein the tubular outer surface of the inner layer is completely closed by the outer layer, and the conduit is bonded with the dropping funnel by directly extending into the dropping funnel or the conduit and the dropping funnel are communicated through a connector. Through the structural principle, when the conduit is manufactured, the bidirectional adaptability of performance and process can be realized by selecting different materials in a coextrusion mode, i.e. a material having low adsorption or non-adsorption characteristic for a medicament is selected as the inner layer of the conduit, such as polyurethane PU, polypropylene PE or modified polypropylene TPEE and the like to satisfy the performance requirement of no medicament adsorption or light shielding agent leakage prevention and adapt to a traditional production process in a lower-cost mode.
Owner:李林风
Two-component quick-hardening early-strength liquid soil stabilizer and application thereof
A prepared two-component quick-hardening early-strength liquid soil stabilizer is suitable for premixed flow-state solidified soil construction and comprises a curing agent component A and a curing agent component B. The curing agent component B is a liquid quick-hardening early-strength auxiliary agent, has a coagulation-promoting early-strength excitation effect and is used for preparing quick-hardening early-strength solidified soil. The stabilizer has the advantages of short setting time, high early strength, good fluidity, no need of whole-course paving, strong adaptability to foundationsoil and the like.
Owner:CNBM ZHONGYAN TECH
Coal and firewood two purpose gas burning stove
InactiveCN1458250AAvoid poisoningHigh flame temperatureGaseous fuelsCombined combustion mitigationCoalEngineering
The two-purpose gas burning stove for burning coal and firewood includes stove body, annular water tank, smoke exhausting pipe, circular gas and water filter, gas exhaust valve outside the stove body, side boiling water valve, straight pipe heat radiator in the inner wall of the stove body and connected to the circular water jacket, outer pipe connected to the heater, fuel leakage preventer in the bottom of the stove body, stove grate locking unit, coke eliminating door and coke pushing rod, air inlet connected to blower, ash door and wind backing baffle. It can produce gas continuously and high flame temperature and less environmental pollution.
Owner:袁功强
A cobalt-based alloy used for sheathed thermocouple cables
InactiveCN104762531AImprove antioxidant capacityImprove stabilityThermometers using electric/magnetic elementsUsing electrical meansMetallurgyThermocouple
A cobalt-based alloy used for sheathed thermocouple cables is disclosed. The cobalt-based alloy comprises following components by mass: 0-0.0042% of C, 22-25% of Cr, 0.3-0.8% of Nb, 0.2-0.5% of Co, 0.1-0.3% of Mo, 0.2-0.8% of Fe, 0.01-0.02% of Mg, 1-1.5% of Si, 0-0.02% of P and 0-0.01% of S, with the balance being Ni. The cobalt-based alloy facilitates processing of sheathed thermocouple cables under a condition of ensuring plasticity, can be used for high-temperature environments, overcomes a plurality of technical defects and use restrictions in practical application, and prolongs the service lifetime of a sheathed thermocouple.
Owner:绍兴市上虞神舟仪表有限公司
Modified adsorbent for adsorption separation and preparation method and application thereof
PendingCN113083222AAddress technical deficienciesExtended Surface Adsorption CapacityIon-exchange process apparatusGas treatmentCatalytic reformingPtru catalyst
The invention discloses a modified adsorbent for adsorption separation and a preparation method and application thereof, which belong to the technical field of petroleum and chemical engineering. On the basis of an industrial product molecular sieve or a catalyst, through modification optimization, on the premise that the original surface microstructure is not damaged, better specific surface area, adsorption capacity and diffusivity are achieved, and directional selectivity and better mechanical strength are achieved. The modified adsorbent can be widely applied to the fields of aromatic isomers, diamine isomers, phenolic isomers and polyhydric alcohol isomers in a liquid chromatography adsorption separation technology, is further widely applicable to the fields of adsorption dehydration, catalyst carriers, removal of organic matters in wastewater and waste gas and the like, and is particularly applicable to a cordierite honeycomb catalytic module with a higher mechanical strength requirement. The modified adsorbent has important application in the fields of rapid thermal cracking catalytic reforming and the like, and meanwhile, the more stable catalyst or molecular sieve adsorbent is more easily applicable to adsorption of harmful substances such as indoor formaldehyde and the like.
Owner:CHINA CATALYST HLDG CO LTD
Structure topology optimization method and system based on weighted graph and readable storage medium
ActiveCN112182819AAddress technical deficienciesOvercoming technical drawbacksGeometric CADDesign optimisation/simulationGraph basedEngineering
Owner:CENT SOUTH UNIV
Thermostatic strand displacement amplification technology and kit
ActiveCN108642144AGood specificityAddress technical deficienciesMicrobiological testing/measurementMedical jurisprudenceGene copy
The invention discloses a thermostatic strand displacement amplification technology. According to the technology, after heating denaturation is conducted on a target DNA sequence, a pair of primers containing RNA sequences are used for hybridizing with a template DNA single chain, the primers are extended under the action of strand displacement DNA polymerase, a combined sequence of target DNA andRNA containing an identification site of endoribonuclease is generated, the identification site is cut by the hydrolyzation of thermal resistant endoribonuclease to form viscous termini, the primersare connected with the viscous termini, a 3' terminus is extended under the action of the strand displacement DNA polymerase and replaces another DNA strand, a displaced strand is sequentially turnedinto target sources of another amplification reaction after the displaced strand is hybridized with the primers, the steps are constantly repeated in a reaction system, and the target DNA sequence isincreased in exponential rate. The technology is convenience, sensitive, rapid and good in specificity, the detecting lower limit is DNA with a plurality of gene copy numbers, the technical detect ofthermostatic amplification in the prior art is overcome, and the technology can be widely applied to the fields of clinical medicine, medical jurisprudence, animal and plant quarantine inspection andthe like.
Owner:贠红岩
Brake nipple for horizontal well conveying tractor perforating tool
PendingCN109184630AImprove safety and reliabilityReasonable frictional resistanceFluid removalEngineeringBrake control
The invention relates to a brake pipe nipple for a horizontal well conveying tractor perforating tool. A brake control mechanism is connected by screwing between an upper brake joint and a lower brakejoint. A brake claw of the brake control mechanism is located in the middle of one end of two supporting arms, and is connected and fixed by a steel pin. The other end of the two supporting arms is fixed to a backup block by a steel pin. A spring is arranged between the backup block and a pushing rod. The pushing rod is connected with a motor assembly. In the perforation construction of horizontal wells, the brake pipe nipple forms a horizontal well conveying tractor perforating tool together with a release pipe nipple, a rotating pipe nipple, an upper centralizer, a magnetic positioning pipenipple, a tractor, a lower centralizer, a flexible pipe nipple, a safety power supply pipe nipple, a shock absorber, a perforator and a ball gun tail, and the tool can adapt to work under the perforation condition of an up-warping horizontal well. Reasonable friction resistance can be provided. A well entering tool can be kept stationary or move at uniform speed in an up-warping horizontal well.The motion state of the tractor perforating tool can be controlled. The safety and reliability of construction can be greatly improved.
Owner:SINOPEC JIANGHAN OILFIELD SERVICE CORP +1
Preparation technology of insulation board with sandwich structure
InactiveCN104060707AAddress technical deficienciesHigh strengthHeat proofingEnergy conservationPerlite
Owner:NANJING COLLEGE OF CHEM TECH
Data management method, data management device and server
PendingCN111459936AImprove sharing efficiencyImprove utilization efficiencyDigital data authenticationTransmissionData packDatasheet
The invention discloses a data management method, a data management device, a server and a computer readable storage medium, and the method comprises the steps: receiving image data uploaded by a lightweight application client; if the image data contains more than one target product, performing identification operation on the image data to obtain an identification result; acquiring a region identification code of a region where the lightweight application client is located; and establishing an association relationship between the identification result and the area identification code, and storing the association relationship into a preset product data table. According to the scheme of the invention, the method overcomes the defects of the flow and technology in a conventional data collection and management technology, improves the sharing efficiency and utilization efficiency of data, and also reduces the management cost of an enterprise.
Owner:湖南华菱涟源钢铁有限公司
Testing and calculating method for measuring hole expansion rate
ActiveCN113587880AAccurate measurementThe simulation prediction is reasonableMaterial strength using repeated/pulsating forcesManufacturing computing systemsMechanical engineeringMeasurement precision
The invention discloses a testing and calculating method for measuring a hole expansion rate. The method comprises the following steps: preparing a hole expansion sample, loading a fixed stroke, judging an effective sample, recording test data and calculating the hole expansion rate. According to the method, corresponding technical solutions are formulated for the problems of crack judgment standards and hole expansion rate calculation methods in current hole expansion test standards, the technical defects in a traditional test method are overcome, the measurement precision of the material hole expansion rate is improved, a solid foundation is laid for engineering application of the hole expansion rate in a stamping simulation model, and the problem of edge cracking of advanced high-strength steel can be solved. The method has the technical advantages of practicability, low cost, high precision and standardization, and has important engineering practical significance and wide engineering application prospects.
Owner:肖锋
Rigid contact line grinding and polishing device
PendingCN114211339AAddress technical deficienciesFix relationship breakdownEdge grinding machinesGrinding carriagesPolishingBusbar
The invention provides a rigid contact net grinding and polishing device which is used for automatically grinding and polishing a contact line and comprises a frame body, two pairs of guide wheels are arranged on the two sides of the upper end of the frame body, a positioning wheel is arranged below each pair of guide wheels, and clamping parts used for clamping a busbar are formed by the wheel faces of the guide wheels and the wheel faces of the positioning wheels; the lower end of the frame body is provided with at least one polishing wheel, the polishing wheels are parallel to rotating shafts of the guide wheels, the polishing wheels are connected with an output shaft of the motor, the polishing wheels polish contact lines at the lower end of the busbar, and the polishing wheels rotate to drive the frame body to move on the busbar. And compared with an original construction method, the rigid contact net grinding device can achieve automatic grinding, the construction difficulty is greatly reduced, safety is higher, and working efficiency is higher.
Owner:OPERATION BRANCH OF SHENYANG METRO CO LTD
Inline coding equipment and coding method for gravure printing machine
ActiveCN105196703BAddress technical deficienciesShorten the production cycleDuplicating/marking methodsTypewritersEngineeringPrinting press
The invention discloses a gravure printing machine on-line coding equipment and a coding method thereof. The gravure printing machine on-line coding equipment comprises: several nozzle groups, a base for fixing the nozzles and a base for adjusting the distance between the nozzle groups and the paper. A lifting adjustment mechanism for the distance; wherein, the nozzle group is fixed on the base, the lifting adjustment mechanism is connected with the nozzle group, and each nozzle group further includes sequentially arranged nozzles. Overcoming the technical deficiency of the existing gravure printing machine, not only the existing gravure printing machine can be used to realize inkjet coding, but also the gravure printing process and the inkjet inkjet process can be carried out synchronously, shortening the production cycle and improving the inkjet inkjet efficiency.
Owner:QINGDAO ENER PACKAGING TECH
A chitosan/styrene-acrylic emulsion surface sizing agent for papermaking
ActiveCN109112887BPromote environmental protectionImprove film formationWater-repelling agents additionPaper coatingBenzoleDefoaming Agents
The invention provides a chitosan / styrene-acrylic emulsion surface sizing agent for papermaking. A formula of the chitosan / styrene-acrylic emulsion surface sizing agent comprises deionized water, chitosan, ammonium persulfate, ferrous sulfate, styrene, butyl acrylate, methyl acrylate, a composite emulsifier, hydrogen peroxide, a defoaming agent and glyoxal. A preparation method comprises the following steps: 1, stirring 28kg of deionized water and ammonium persulfate for standby use; 2, mixing 16kg of deionized water and ferrous sulfate for standby use; 3, stirring the styrene, butyl acrylate,methyl acrylate and the composite emulsifier for standby use; 4, mixing 100kg of deionized water and hydrogen peroxide for standby use; 5, adding the surplus water into chitosan, heating, and addingthe standby use material of step 1; 6, adding the standby use material of step 2, and preserving the heat for 10 minutes; 7, stirring 10 percent of to-be-used mixed monomer of step 3 and 10 percent ofstandby use material of step 4; 8, adding the remaining standby use materials of step 3 and 4; 9, cooling to 60 DEG C, adding the glyoxal, and stirring for 15 minutes; 10, adding the defoaming agent;and 11, filtering to remove impurities, thus obtaining a finished product. By adopting the sizing agent, the film forming performance, adhesion and paper surface strength of the paper product can beimproved, and the environment-friendly production can be facilitated.
Owner:襄阳市岩翔化工有限公司 +1
Positioning apparatus for LED lamp tube glue coating equipment
InactiveCN109382281AEasy to glueAddress technical deficienciesLiquid surface applicatorsCoatingsEngineeringLED lamp
The invention provides a positioning apparatus for LED lamp tube glue coating equipment, wherein a plurality of detachable lamp tube snapping rings are arranged above a bracket capable of being fixedin the middle of a glue coating lower working position positioning seat, the rear portions of each lamp tube are respectively provided with a glue discharge hole, three blocking blocks are distributedon the periphery of the lamp tube snapping ring, the lamp tube snapping ring is a circular ring structure, the inner diameter of the rear portion of the snapping ring is 1-3 mm smaller than the innerdiameter of the front portion, and the snapping ring has a micro-horn-shaped inner diameter structure with the large front portion and the small rear portion, such that the inclination cannot be generated during the glue coating after the lamp tube head is snapped, the glue coating can normally operate, the leaking glue can flow into the glue liquid groove arranged below the glue coating device from the glue discharge holes, and the replacement and maintenance can be conveniently performed when the snapping ring is damaged.
Owner:湖北如日电气股份有限公司
Construction method for basement of subway station
Owner:盐城恒久市政工程有限公司
Bracket forming die
InactiveCN108160821AAddress technical deficienciesSolve the problem of insufficient technologyShaping toolsEngineeringRapid prototyping
The invention discloses a bracket forming die which is characterized by comprising a convex die (1) and a concave die (2); the convex die (1) is provided with a convex die boss (1-1), a circular faceconvex bottom (1-2) and internal boss through holes (1-3); and the concave die (2) is provided with a concave die boss (2-1), a circular face concave bottom (2-2) and internal concave die through holes (2-3). The bracket forming die has the advantages of simple structure, low cost and convenience in processing forming to reach the purposes of rapidness in formation and improvement in working efficiency.
Owner:十堰市志良汽车零部件股份有限公司
Test method for measuring limit tip cold bending angle and equivalent fracture strain
PendingCN114544383AEasy to controlIncrease uncertaintyMaterial strength using steady bending forcesStructural engineeringMechanical engineering
The invention discloses a test method for measuring a limit tip cold bending angle and equivalent fracture strain, which comprises the following steps: preparing a bending sample, setting an initial fixed loading stroke, determining existence and absence of a crack state, determining an effective sample, and measuring the limit cold bending angle. The method for measuring the equivalent fracture strain comprises the following steps: spraying speckles on the side surface of a sample, obtaining an effective sample for DIC data processing, calculating the deformation of the edge side of the effective sample, measuring the arc length and calculating the equivalent fracture strain. According to the invention, a technical scheme of combining fixed stroke loading, a DIC technology and theoretical calculation is adopted, and the limit cold bending angle and the equivalent fracture strain are accurately measured. According to the method, the failure moment of the material is accurately controlled, the intrinsic parameters of the material are measured, the test cost is reduced, and the method has important engineering practical significance and wide engineering application prospects.
Owner:武汉上善仿真科技有限责任公司
Multi-degree-of-freedom hoisting manipulator
ActiveCN106185641BReduce usageExpand the scope of workCranesMulti degree of freedomDegrees of freedom
The invention discloses a multi-freedom-degree lifting mechanical arm. The mechanical arm comprises a base, a stand column arranged on the base and a mechanical arm structure arranged on the stand column; the mechanical arm structure comprises a first rotating mechanism, a second rotating mechanism, a vertical sliding mechanism, a cantilever mechanism, a speed reduction motor, a swing arm mechanism and a machine head. The mechanical arm is reasonable in structural design, use of an oil pressure cylinder is reduced, and therefore technical shortcomings brought by the oil pressure cylinder can be overcome, and work efficiency is improved to a certain degree; meanwhile, the work range of a lifting machine can be effectively increased, positioning precision of heavy object lifting can be effectively improved, the noise of the lifting machine can be reduced, use stability and safety coefficients are improved, application is high, and practicability is good.
Owner:广东英达思迅智能制造有限公司
Universal AC measurement method for external quantum efficiency of solar battery
InactiveCN101710171BImprove stabilityGood repeatabilityElectrical testingPhotometry using electric radiation detectorsHigh signal intensityElectrical battery
Owner:NANJING UNIV
Opening-closing valve for LED (Light Emitting Diode) light tube glass granular raw material storage bin
InactiveCN110578829AAddress technical deficienciesEasy to storeOperating means/releasing devices for valvesDrive shaftEngineering
The invention provides an opening-closing valve for an LED (Light Emitting Diode) light tube glass granular raw material storage bin. A curved arc-shaped opening below a rectangular valve body is matched with a sealing valve which correspondingly coincides with and buckles the opening; supporting plates at the two sides of the sealing valve are movably arranged below supporting seats A of the twosides of the valve body through rotating shafts; a supporting seat B is arranged at the outer side of the supporting seat A of one side of the valve body at intervals; a driven gear arranged on the rotating shaft between the supporting seat A and the supporting seat B is engaged with a driving gear of the inner end of a driving shaft in a transmission manner; and a handle is arranged at the outerend after the driving shaft passes through the supporting seat B. After the opening-closing valve formed thereout is installed, when the opening-closing valve is used, the sealing valve can be driventhrough the rotation of the handle to realize the closing and opening of the opening-closing valve; and as the curved arc-shaped opening and the coincided sealing valve are adopted, the opening-closing valve can be opened and closed freely and prevents the stored granular raw materials from being blocked.
Owner:湖北如日电气股份有限公司
Chitosan/styrene-acrylic emulsion surface sizing agent for papermaking
ActiveCN109112887APromote environmental protectionImprove film formationWater-repelling agents additionPaper coatingDefoaming AgentsImpurity
The invention provides a chitosan / styrene-acrylic emulsion surface sizing agent for papermaking. A formula of the chitosan / styrene-acrylic emulsion surface sizing agent comprises deionized water, chitosan, ammonium persulfate, ferrous sulfate, styrene, butyl acrylate, methyl acrylate, a composite emulsifier, hydrogen peroxide, a defoaming agent and glyoxal. A preparation method comprises the following steps: 1, stirring 28kg of deionized water and ammonium persulfate for standby use; 2, mixing 16kg of deionized water and ferrous sulfate for standby use; 3, stirring the styrene, butyl acrylate,methyl acrylate and the composite emulsifier for standby use; 4, mixing 100kg of deionized water and hydrogen peroxide for standby use; 5, adding the surplus water into chitosan, heating, and addingthe standby use material of step 1; 6, adding the standby use material of step 2, and preserving the heat for 10 minutes; 7, stirring 10 percent of to-be-used mixed monomer of step 3 and 10 percent ofstandby use material of step 4; 8, adding the remaining standby use materials of step 3 and 4; 9, cooling to 60 DEG C, adding the glyoxal, and stirring for 15 minutes; 10, adding the defoaming agent;and 11, filtering to remove impurities, thus obtaining a finished product. By adopting the sizing agent, the film forming performance, adhesion and paper surface strength of the paper product can beimproved, and the environment-friendly production can be facilitated.
Owner:襄阳市岩翔化工有限公司 +1
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