1443results about How to "Improve purity" patented technology

The invention relates to the technical field of wire harness intelligent evaluation, in particular to a wire harness connection performance intelligent test method and system. The method comprises the following steps: collecting wire harness test data generated by a wire harness test device and a wire harness sensor in real time through an edge computing node; performing electrical performance detection extraction and mechanical performance detection extraction according to the wire harness test data to respectively obtain wire harness electrical performance detection data and wire harness mechanical performance detection data; performing electrical performance deep evaluation according to the wire harness electrical performance detection data to obtain wire harness electrical performance evaluation data, and performing mechanical performance deep evaluation on the wire harness mechanical performance detection data to obtain wire harness mechanical performance evaluation data; and performing environment pressure cross reference according to the wire harness electrical performance evaluation data and the wire harness mechanical performance evaluation data to obtain wire harness connection performance test evaluation data. According to the method, the accuracy of wire harness performance evaluation is improved, and reliable performance data can be obtained in different application fields.

The invention relates to the technical field of signal denoising, in particular to a Beidou navigation satellite observation data purification method under a complex electromagnetic background. The method comprises the following steps: acquiring satellite observation station position data and satellite position data; satellite signal acquisition is carried out on the satellite observation stations according to the satellite observation station position data and the satellite position data, and satellite observation station receiving signals are obtained; multi-angle initial signal discretization is carried out on satellite observation station receiving signals, and an initial satellite observation comprehensive signal discrete diagram is generated. According to the invention, through systematic interference identification, signal purification, multi-angle processing and automatic precision optimization, the identification capability and filtering efficiency of interference signals are improved, so that the problem of electromagnetic interference to Beidou navigation satellite signals under a complex electromagnetic background is weakened, the flexibility of site selection of the Beidou navigation satellite continuous observation station is improved, and the accuracy of site selection of the Beidou navigation satellite continuous observation station is improved. And the precision and stability of positioning, navigation and time service are improved.

The invention belongs to the technical field of waste resource recycling, and particularly relates to a waste resource recycling plastic product manufacturing and forming device which comprises a base, an injection mechanism used for plastic plasticizing and moving is arranged at the top of the base, and a first feeding hopper is arranged at the top of the injection mechanism; a mold closing mechanism connected with a discharging port of the injection mechanism is arranged at the top of the base and used for conducting pressing molding on molten plastic, a treatment box is arranged at the position, located on one side of the injection mechanism, of the top of the base, and a smashing mechanism used for smashing waste resources is arranged in the treatment box; the two driving crushing cutters are driven by the first motor to synchronously and relatively rotate, and then are matched with the fixed crushing cutter to crush waste plastics; according to the waste plastic crushing and cleaning device, multiple functions of crushing, screening, cleaning, drying and the like can be ingeniously integrated, the crushing effect and efficiency of waste plastic are improved, and the powder cleaning effect and the powder quality are also improved.

The invention provides a distributed photovoltaic output power estimation method, and the method comprises the steps: installing a load sensor and a photovoltaic output sensor at an access point, and collecting original data including load data and photovoltaic output data in real time; processing the collected original data; carrying out time synchronization on the load data and the photovoltaic output data; key features are extracted from the cleaned original data, and photovoltaic output is predicted through a time sequence analysis model; inputting load data and photovoltaic output data which are acquired in real time into the trained time sequence analysis model; the time sequence analysis model performs real-time operation according to the load data and the photovoltaic output data, and estimates the photovoltaic output power at the current moment; and based on the estimated photovoltaic output power and the real-time load data, the intelligent coordination controller performs dynamic adjustment, so that the photovoltaic output is matched with the load power. According to the invention, efficient estimation and optimal control of photovoltaic output are realized.

The invention discloses ultralow-temperature high manganese steel and a manufacturing method of an ultralow-temperature high manganese steel plate. The ultralow-temperature high manganese steel comprises the following components in percentage by weight: 0.35-0.55% of C, 0.01-0.10% of Si, 20.00-30.00% of Mn, 0.01-0.10% of Al, less than or equal to 0.005% of P, less than or equal to 0.003% of S, 3.0-5.0% of Cr, 0.3-1.0% of Cu, 0.2-1.20% of Ni, less than or equal to 0.008% of N, less than or equal to 0.002% of O, less than or equal to 0.0002% of H and the balance of Fe and inevitable impurity elements. The manufacturing method of the ultralow-temperature high manganese steel plate comprises the steps of molten iron pretreatment, K-OBM-S converter smelting, LF refining, continuous casting, annealing and coping, hot rolling, online solution treatment and the like. According to the method, high steel purity, low phosphorus and sulfur content, small segregation of the casting blank and the steel plate, good macrostructure of the casting blank and no crack on the surface and in the casting blank can be guaranteed, and the finished steel plate has the characteristics of low yield ratio, high tensile strength, high ultralow-temperature toughness, small thermal expansion coefficient, good fatigue resistance and the like; through the implementation of the invention, the manufacturing cost of the steel for the liquefied natural gas storage tank can be reduced to 1 / 3 of that of 9% Ni steel in the prior art.

The invention relates to the technical field of metal material manufacturing, and particularly discloses a preparation method of an ultrahigh-strength C250 super-large-specification vacuum consumable steel ingot. The preparation method comprises the steps of vacuum induction smelting and vacuum consumable remelting. And in the vacuum induction furnace alloying process, chemical components are accurately controlled, specifically, the chemical components comprise 0.006 + / -0.001 wt% of C, 18.0 + / -0.20 wt% of Ni, 8.0 + / -0.05 wt% of Co, 5.0 + / -0.10 wt% of Mo, 0.40 + / -0.01 wt% of Ti and 0.10 + / -0.02 wt% of Al. The problems of chemical component point control, chemical component uniformity control and the like of a C250 ultra-large-specification vacuum induction phi710mm electrode and a phi810mm vacuum consumable steel ingot are solved, and the metallurgical quality of the ultra-large-specification vacuum consumable steel ingot completely reaches the physical level of a small-specification steel bar.

The present invention relates to the field of grain transport technology, and in particular to an agricultural grain transport device, comprising a base, a shell fixedly installed on the top of the base, a feed hopper and a discharge hopper respectively arranged at both ends of the shell, a cylindrical screen arranged inside the shell, a refrigeration mechanism arranged inside the shell, a mounting plate fixedly installed on the side of the discharge hopper away from the shell, a motor fixedly installed on the top of the mounting plate, a rotating shaft fixedly connected to the output end of the motor, and a spiral hollow disk and a solid disk fixedly connected to the outer wall of the rotating shaft. The advantages are: the inside of the shell maintains a low temperature, the low temperature helps to increase the hardness difference between grain and impurities, improve the efficiency of impurity screening, reduce the stickiness between grains, ensure the smooth flow of grain, the screen effectively screens out impurities in the grain, improves the purity of the grain, pushes the grain in layers, prevents excessive accumulation of grain, and reduces the damage of grain due to friction and extrusion.

The invention discloses a method for determining the purity of electronic-grade hexafluoroethane, and relates to the technical field of the purity of hexafluoroethane, and the method comprises the following steps: vacuumizing a specific sampling container to 10 <-3 > Pa to 10 <-2 > Pa, forming a super-hydrophobic coating on the inner wall, sampling in a temperature-controlled, humidity-controlled and pressure-controlled environment, and removing water and impurities through two-stage pretreatment; enhancing analysis by using a gas chromatograph, a specific carrier gas, a column temperature program, a micro-fluidic chip and an ion mobility spectrometry; then secondary scanning analysis is carried out by using a mass spectrometer double ion source and a calibration system; and finally, learning and matching an algorithm through a data processing system machine. Samples can be accurately collected and pretreated, gas chromatography and mass spectrometry analysis is more accurate and efficient, a data processing system can accurately determine impurities and purity, multiple measurement data can be counted and analyzed, the result reliability is improved, all parts of the system are optimized and matched, the accuracy and stability of the whole process are guaranteed, and the purity is calculated; the method further comprises statistical analysis of multiple measurement data.

The invention discloses lanthanum-cerium mixed rare earth corrosion-resistant twisted steel with yield strength of 400MPa. The lanthanum-cerium mixed rare earth corrosion-resistant twisted steel comprises the following elements: 0.10 to 0.20 percent of C, 0.25 to 0.80 percent of Si, 0.90 to 1.60 percent of Mn, 0.020 to 0.045 percent of V, 0.003 to 0.010 percent of Ti, less than or equal to 0.010 percent of P, less than or equal to 0.010 percent of S, 0.25 to 0.65 percent of Ni, 0.25 to 0.70 percent of Cr, 0.10 to 0.18 percent of RE, less than or equal to 0.20 percent of Cu, less than or equal to 0.004 percent of O, less than or equal to 0.006 percent of N and the balance of Fe and inevitable impurities. The invention further discloses a production method of the lanthanum-cerium mixed rare earth corrosion-resistant twisted steel with the yield strength being 400 MPa. The production method comprises the working procedures of converter smelting, argon blowing refining, LF furnace refining, continuous casting and rolling, and the lanthanum-cerium mixed rare earth reinforced alloy cored wire and the silicon-calcium wire are fed into molten steel in the argon blowing refining process. The components, inclusions and mechanical properties of the produced 400 MPa-grade lanthanum-cerium mixed rare earth steel bar completely meet the technical requirements of the steel bar, the quality control requirement is met, and the 400 MPa-grade lanthanum-cerium mixed rare earth steel bar has the advantages of being high in strength, high in plasticity, resistant to corrosion and the like. The service life of the steel is prolonged, coating and galvanization are avoided, the burden of environmental protection is relieved, and reasonable application of resources is facilitated.

The invention provides a high-temperature alloy for manufacturing a nickel-copper alloy hot extrusion die, which is characterized by comprising the following components in percentage by weight: 0.02 to 0.08 percent of C, less than or equal to 0.15 percent of Si, less than or equal to 0.15 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.01 percent of S, 14.0 to 17.0 percent of Cr, 7.5 to 9.5 percent of Mo, 2.2 to 2.6 percent of Nb, 1.0 to 1.6 percent of Al, 2.2 to 2.8 percent of Ti, 0.005 to 0.015 percent of B, 0.01 to 0.05 percent of Zr, 21.0 to 24.0 percent of Fe and the balance of Ni. The preparation method of the alloy comprises the following processes: firstly, alloy raw materials are subjected to vacuum induction melting and then cast into ingots, then electroslag ingots are obtained through electroslag remelting, then the electroslag ingots are subjected to multi-heating-number forging, and then heat treatment is carried out. The highest use temperature of the alloy reaches 1000 DEG C, and the oxidation rate at 1000 DEG C is as low as 0.08 g / m < 2 >. H; at the temperature of 650 DEG C, the tensile strength reaches 1000 MPa, the yield strength reaches 850 MPa, the fatigue strength is higher than 400 MPa, and the lasting time of the load of 700 MPa reaches 80 h; the service life of a nickel-copper alloy hot extrusion die made of the alloy can reach 25000 times.

The invention discloses an electroplating wastewater heavy metal content monitoring system, particularly relates to the field of electroplating wastewater monitoring, is used for solving the problem of influence of bubble interference on heavy metal content monitoring precision, and aims at dynamic characteristics of bubble kick interference, and through identification and threshold screening, distribution and recovery characteristics of interference signals are extracted. Therefore, the accuracy and adaptability of the correction threshold are ensured. On the basis, multi-stage self-adaptive filtering is applied to carry out point-by-point noise elimination and filtering on the monitoring data, so that effective isolation of kick interference is realized, and a continuous and real heavy metal concentration curve is obtained; performing traceability analysis on the pure data after noise elimination in combination with historical data, generating a kick compensation coefficient and returning the kick compensation coefficient to an identification link to form a self-adaptive closed loop, and optimizing a subsequent interference correction effect; therefore, the method has high anti-interference performance and long-term correction stability in a complex fluid environment, ensures real-time accuracy and consistency of heavy metal monitoring, and effectively solves the problem of hidden influence of bubble interference on online monitoring precision.

The invention discloses a spectrum confocal detection device with a high signal-to-noise ratio, which comprises a light source, and a first lens group, a transmission area of a light splitting component and a second lens group which are sequentially and coaxially arranged and are jointly used for guiding incident light emitted by the light source to the surface of a detected object after dispersion and focusing, and enabling light with a target wavelength to form a focusing light spot, the light of the non-target wavelength forms a dispersion light spot at a position different from the focusing light spot; and the second lens group, the reflection area of the light splitting component, the third lens group, the first spatial filtering structure and the spectrum acquisition unit are sequentially arranged according to the reflection light path and are used for receiving the reflection light reflected by the measured object, and the reflection light enters the spectrum acquisition unit after being reflected, focused and filtered so as to acquire spectrum information. The advantages of a triangular structure and a coaxial structure are combined, and the problem that an existing spectrum confocal detection system is affected by background light, so that the signal-to-noise ratio of an obtained spectrum is low can be solved.

The invention discloses a massage chair real-time control method and system based on electromyographic signals and a computer medium. The method comprises the steps that the electromyographic signals of a current massage user are obtained; extracting time domain features, frequency domain features and geometric features of the electromyographic signals; obtaining a real-time muscle state according to the time domain feature, the frequency domain feature and the geometric feature of the electromyographic signal; and controlling the massage strength and rhythm of the massage chair according to the real-time muscle state and the historical massage data of the current massage user. By analyzing the long-term muscle state and massage record of the user, an instant personalized massage scheme is generated for each user. Therefore, the actual requirements of the user can be better met, the system can provide more accurate and personalized services for the user, and the optimal user experience can be achieved.

The invention discloses a recycling method of a waste lithium-ion power battery negative electrode material, which comprises the following steps: deconstructing the waste battery negative electrode material through selective plasma electrolysis, separating organic matters and electrolyte to obtain untreated negative electrode powder, and drying the untreated negative electrode powder to obtain the waste lithium-ion power battery negative electrode material. The powder is refined into uniform particles by adopting a supercritical fluid cooling and crushing technology, the physical structure of the powder is kept, metal elements such as lithium, nickel and cobalt are extracted by utilizing a multi-frequency resonance auxiliary ion exchange technology, impurities are removed, further purification is performed by adopting a superconducting magnetic separation technology and a nanoscale aerosol separation technology, and a high-purity metal solution is generated; metal compounds are generated through an intelligent self-adaptive phase change precipitation technology and are reduced into recyclable metal materials through biological catalytic deposition, the whole recovery process is monitored and optimized through a closed-loop circulation intelligent feedback system, the metal recovery rate is maximized, and harmless treatment is ensured.

The invention provides a screening device for rice processing, and relates to the technical field of rice processing equipment. The upper end of the side wall of one end of the screening machine box is of an outwards-protruding structure, the top of the outwards-protruding part is provided with an unhulled rice feeding port with the wide upper portion and the narrow lower portion, the unhulled rice feeding port communicates with an inner cavity of the screening machine box, and a horizontal stock bin supporting plate is fixedly arranged in the inner cavity, below the unhulled rice feeding port, of the screening machine box. A separating tongue plate is arranged at the edge of the inner end of the stock bin supporting plate, and a hinged shaft is arranged at the end, close to the stock bin supporting plate, of the separating tongue plate and rotationally connected into the screening machine box; and a feeding shaft is transversely and rotationally mounted at the position, deviating to the separating tongue plate, above the stock bin supporting plate. The rice is easily added into the screening machine box through the rice adding opening and falls on the stock bin supporting plate. After the motor is started, the feeding shaft rotates, and the feeding chute on the feeding wheel picks up the rice from the stock bin supporting plate and stably conveys the rice forwards along the inclined surface. By means of the design, uniform conveying of the rice is guaranteed, and the screening efficiency is greatly improved.

The invention relates to a special copper-tin alloy material and a preparation method and application thereof. The special copper-tin alloy material comprises the following elements in percentage by mass: 6.0-10.0% of Sn; 0.05 to 0.5 part of Ni; zn: < = 5.0; mn < = 0.5; 0.2 to 1.0 part of Co; pb: < = 1.0; al < = 0.25; si < = 0.05; and the balance of copper and inevitable impurities. The tensile strength of the special copper-tin alloy material ranges from 360 MPa to 560 MPa, the yield strength ranges from 200 MPa to 350 MPa, the hardness ranges from 120 HB to 180 HB, the ductility is larger than or equal to 20%, and the special copper-tin alloy material further has the advantages of abrasion resistance, friction reduction, sintering resistance, corrosion resistance and good burying property and thermal conductivity.

The invention relates to the field of DNA amplification, in particular to an intelligent molecular diagnosis and analysis method, device and equipment and a storage medium. The method comprises the following steps: detecting multi-dimensional environmental parameters of the DNA amplification kit in real time based on a multi-dimensional sensing node; performing spatial topology layout mining and environment amplification perception fitting on the multi-dimensional environment parameters, and constructing a real-time amplification perception model; identifying a DNA amplification sample; performing layered temperature control analysis on the DNA amplification sample, and performing dynamic amplification constant-temperature control on the real-time amplification perception model, so as to construct a plurality of dynamic constant-temperature amplification models; carrying out regional DNA reaction degree evaluation on the plurality of dynamic isothermal amplification models one by one, and then carrying out regional flow velocity dynamic regulation, so as to construct a dynamic amplification reaction flow velocity regulation strategy; real-time amplification control is performed based on a dynamic amplification reaction flow rate adjustment strategy to generate a filter optimized amplification reaction signal. According to the method, the accuracy of molecular diagnosis analysis is improved through efficient and convenient DNA isothermal amplification.

The centrifugal fan comprises a fan shell, an air inlet, an air guide wheel and an air outlet, the air inlet is formed in the bottom of the fan shell, the air guide wheel is rotationally connected to the upper portion of the air inlet and driven by a motor on the inner wall of the fan shell, the air outlet is formed in the outer wall of the fan shell, and the air outlet is rotationally connected to the upper portion of the air inlet. An energy-saving assembly used for assisting in air inlet is arranged below the air inlet, a separation assembly used for separating diffuse particles and impurities is arranged in the fan shell, the purpose of collecting the particles and the impurities is achieved through the arrangement of the separation assembly, and compared with a traditional centrifugal fan which depends on a simple filter screen or gravity sedimentation and other modes, the energy-saving effect is better. Compared with the prior art, the device has a better separation effect on small particles and impurities with different densities, improves the purity of exhausted gas, achieves the purpose of collecting the particles and the impurities, and avoids the problems of increase of airflow resistance, fluctuation of air volume and air pressure and the like caused by impurity accumulation.

The invention relates to corrosion-resistant austenitic stainless steel for spent fuel aftertreatment and a preparation method of the corrosion-resistant austenitic stainless steel, belongs to the field of nuclear materials and technologies, and solves the key problem that existing domestic commercial austenitic stainless steel is prone to intergranular corrosion in a nitric acid medium in a special spent fuel aftertreatment environment. The stainless steel comprises the following components in percentage by weight: 15.0 to 20.0 percent of Cr, 12.0 to 18.0 percent of Ni, 3.0 to 6.0 percent of Si, 0.05 to 2.0 percent of Mn, 0.05 to 2.0 percent of W and Mo, 0.20 to 0.20 percent of N, 0.20 to 0.20 percent of Nb and V, 0.05 to 0.05 percent of rare earth element RE and the balance of Fe and inevitable impurity elements: less than or equal to 0.010 percent of C, less than or equal to 0.005 percent of P, less than or equal to 0.005 percent of S, less than or equal to 0.005 percent of O and less than or equal to 0.005 percent of B. The preparation method of the stainless steel comprises the steps of vacuum induction melting, vacuum consumable remelting, thermal machining and solution treatment.

The invention provides multi-section wastewater treatment equipment for photocatalytic degradation, and belongs to the technical field of wastewater treatment. Comprising a pretreatment device, a photocatalysis device, a separation and recovery device and a post-treatment device. By arranging the filter cartridge, the deformation ring, the conical filter screen, the arc-shaped top plate, an elastic sheet and a baffle ring II, after wastewater flows in from the water inlet, the arc-shaped top plate effectively disperses water flow, impurities are prevented from directly impacting the top of the conical filter screen to cause decomposition, and meanwhile, the arc-shaped top plate and the conical filter screen are driven to move downwards, so that the deformation ring forms a buffer inclined plane to further absorb impact energy; the filtering precision is greatly improved through double buffering; the deformation ring is linked with the baffle ring II through the connecting rope II, when wastewater flows in, the discharge hole is closed, impurity circulation is prevented, wastewater visibility is improved, photocatalytic degradation is enhanced, when the wastewater stops flowing in, the elastic piece resets the deformation ring, the baffle ring II is driven to open the discharge hole so that impurities can be discharged along with the treated wastewater, and filtering precision and photocatalytic degradation efficiency are improved; stable and efficient operation of the system is guaranteed.

The invention provides a battery cell structure, an assembly process method of the battery cell structure and a large energy storage battery, the battery cell structure comprises a cover plate and two adapter sheet structures, the cover plate is provided with two pole columns arranged at intervals along the Y direction, each adapter sheet structure comprises a pole column connecting part, the pole column connecting part is provided with a first side, and the first side is provided with a second side; the first side is provided with a cleaning area for cleaning treatment, the cleaning area comprises a welding area and an annular area surrounding the periphery of the welding area, and the welding area is used for welding and fixing the pole connecting part and the pole, so that the welding area is ensured to be in a clean state before welding, welding defects caused by impurities, oxides and the like are avoided, and the welding quality is improved. Therefore, the welding strength and reliability of the pole connecting part and the pole are improved.

The invention discloses a process method for preparing fish collagen tripeptide and application of the fish collagen tripeptide, and belongs to the technical field of collagen peptide preparation processes. According to the method, the raw material fish skin is subjected to pretreatment and pretreatment, and then the pretreated fish skin is subjected to two times of enzymolysis treatment, so that efficient hydrolysis of fish skin collagen is realized, and a collagen peptide product with small molecular weight is obtained. Firstly, neutral protease and papain are used for carrying out primary enzymolysis on fish skin, then a microbial fermentation agent and an activity accelerant are used for carrying out deep fermentation enzymolysis treatment, peptide fragments can be effectively further cut, the yield of small molecule peptide fragments is increased, and the biological activity is improved. The method is simple, the process is easy to control, environmental pollution is avoided, the enzymolysis time is short, the enzymolysis speed and the extraction rate of the collagen peptide can be increased, and the collagen peptide obtained through the method is low in molecular weight, good in biological activity and easier to popularize and apply.

The invention provides tundish stuffing sand and a preparation method thereof, and belongs to the technical field of steelmaking continuous casting. The invention relates to tundish drainage sand, which is prepared from the following components in parts by weight: 40 to 60 parts of magnesite sand, 15 to 35 parts of dolomite sand, 10 to 30 parts of raw perlite, 5 to 15 parts of kyanite, 10 to 30 parts of rare earth mineral powder and a binder. The weight part of the rare earth mineral powder is 2-5, and the weight part of the binder is 1-3. The tundish stuffing sand is suitable for a stopper-free flow control pouring method, the automatic pouring rate is increased, and molten steel pollution is reduced.

The invention belongs to the technical field of vegetable oil purification equipment, and particularly relates to edible vegetable oil processing and purifying equipment and method.The edible vegetable oil processing and purifying equipment comprises a cleaning barrel and a ladder, a filtering barrel is fixedly mounted at the top of the cleaning barrel, and a filtering blockage cleaning mechanism is arranged in the cleaning barrel. According to the edible vegetable oil processing and purifying equipment and method, the filtering blockage cleaning mechanism in the cleaning barrel is arranged, so that a filtering net can be regularly cleaned, the situation that the filtering efficiency is reduced due to impurity accumulation is prevented, and the continuity and stability of the production process are ensured; oil and solid impurities can be effectively separated through the centrifugal filtering mechanism arranged in the filtering barrel, the purity of an oil product is improved, grease in the oil material is further extracted through centrifugal force through the transverse centrifugal squeezing mechanism arranged in the squeezing box, the oil yield is improved, and the quality of the oil product is ensured; by arranging the mechanical cleaning and squeezing mechanism, manual operation is reduced, the production automation degree is improved, and the labor intensity and the production cost are reduced.

The invention discloses pipeline steel for carbon dioxide conveying and a production method thereof, and relates to the technical field of steel production, and the pipeline steel comprises the following chemical components in percentage by mass: 0.03%-0.07% of C, 0.10%-0.40% of Si, 1.00%-1.40% of Mn, less than or equal to 0.013% of P, less than or equal to 0.0020% of S, 0.030%-0.070% of Nb, less than or equal to 0.010% of V, 0.008%-0.030% of Ti, 0.20%-0.40% of Cr, 0.10%-0.30% of Ni, 0.05%-0.15% of Mo, less than or equal to 0.010% of Cu, 0.015%-0.055% of Al, less than or equal to 0.00050% of B, 0.0006%-0.0030% of Ca, less than or equal to According to the invention, a structure form taking bainite as a main component is realized, and the performance requirement of a product is met.

The utility model is suitable for the technical field of power supply filters, and provides an adjustable inductance type power supply filter, which comprises a sound insulation shell and an adjusting assembly, the adjusting assembly comprises a plurality of partition plates arranged in the inner cavity of the sound insulation shell side by side, and the partition plates are in sliding fit with the sound insulation shell. Through holes for mutual connection of filters are formed in the plurality of spacing plates in a penetrating manner; the power interface and the load interface are arranged on the outer side of the sound insulation shell and are electrically connected with the corresponding filters respectively; according to the utility model, through the arrangement of the adjusting assembly and the arrangement of the slidable spacing board, the spacing between the cavities can be adjusted, and the position of the filter can be adjusted; a user can finely adjust the filter according to specific power supply signal characteristics and application requirements, and the performance of the filter is optimized; meanwhile, the sound insulation shell is made of an insulating material, so that external noise can be effectively isolated, and the purity of signals is ensured; and the output of the filter is more stable and reliable.

The invention relates to the technical field of metallurgy, in particular to a production method for reducing casting blank cracks, which comprises the following procedures: (1) pre-desulfurizing molten iron; (2) smelting in a converter; (3) LF refining; (4) RH refining; (5) slab continuous casting; and (6) hot charging and rolling. By optimizing the chemical components and the mass percentage of the continuous casting billet and regulating and controlling the technological parameters of multiple procedures such as converter smelting, LF refining, RH refining, slab continuous casting and hot charging rolling, the austenite grain size in the microstructure of the surface layer of the continuous casting billet is refined, the high-temperature plasticity of the continuous casting billet is improved, and cracks on the surface of the continuous casting billet are reduced.

The invention discloses a wine brewing rice pretreatment and fermentation method for reducing the drunkenness of white spirit. The rice pretreated by the method disclosed by the invention is subjected to liquor fermentation, and the fusel oil content is 1.2-1.4 g / L, which is reduced by 0.3-0.5 g / L compared with that of a control sample which is not pretreated by the soaking solution disclosed by the invention. The taste evaluation result of the wine body is as follows: the rice fragrance is comfortable and elegant, the taste is mellow, sweet and clean, the rich rice fragrance remains in the mouth, and the wine is plump and pleasant. After the wine liquid is aged, the comprehensive drunkenness Q ranges from 0.75 to 0.99 and is far lower than the comprehensive drunkenness Q of various commercially available baijiu (the comprehensive drunkenness Q is larger than or equal to 1) and a control sample (the comprehensive drunkenness Q is equal to 1.327).

The invention discloses an electrocardiogram abnormal degree detection method based on artificial intelligence. The method comprises the following steps: removing low-frequency noise from original electrocardiogram data; constructing an electrocardiogram time sequence anomaly detection model according to the electrocardiogram signal after the low-frequency noise is removed; decomposing the electrocardiogram signal without the low-frequency noise into different low-frequency components and high-frequency components; performing threshold processing on the high-frequency component, and reconstructing an electrocardiogram signal; performing feature extraction on the electrocardiogram signal data subjected to noise interference removal to obtain an electrocardiogram feature sequence; inputting the electrocardiogram feature sequence into an electrocardiogram time sequence anomaly detection model for model parameter estimation, and outputting model parameters; and predicting a predicted value of the electrocardiogram feature sequence according to the estimated model parameters to obtain an electrocardiogram anomaly score. According to the method, after the electrocardiogram time sequence anomaly detection model is automatically constructed through the intelligent engine according to the electrocardiogram signal, the model parameters are adjusted, the accuracy and efficiency of electrocardiogram anomaly detection are improved, and the generalization ability is enhanced.

The invention relates to the technical field of cleaning equipment, and discloses a wild jujube cleaning machine which comprises a treatment box which serves as a basic component of the whole device and is used for assembling and bearing all treatment mechanisms and subordinate structural parts of the treatment mechanisms. The partition seat is fixedly connected to the middle of the inner side of the treatment box and used for dividing the space of the upper and lower parts of the inner side of the treatment box into an arc-shaped cavity, a sorting cavity and a collecting cavity; and the attachment and separation mechanism is used for carrying out separation treatment on soil, dust and other impurities attached to the wild jujubes fed into the equipment. By adding and arranging the gas-liquid mixed washing mechanism, when the wild jujubes treated by the attachment and separation mechanism are washed, the wild jujubes are washed in a gas-liquid mixed mode, water resource consumption in the wild jujube washing process can be effectively reduced, and a large amount of water cost can be saved for enterprises; in addition, by reasonably controlling the switching frequency and pressure of water and air, a good cleaning effect can be achieved under low water pressure.