190 results about "Particle packing" patented technology

The invention relates to the technical field of wharf loading and unloading, and discloses a bulk grain wharf ship loading and unloading dual-purpose machine which comprises a conveyor main body and a frame, a discharging hopper is fixedly connected to the top of the conveyor main body, the bottom of the conveyor main body is rotationally connected with the outer wall of the frame, and a supporting frame is rotationally connected to the bottom of the conveyor main body; when a ship needs to be unloaded, a conveying pipeline enters a cabin through a moving assembly, then when a first motor is started to enable a rotating rod to rotate, a connecting rod can be driven to rotate, a concave-convex ring rotates, an extrusion pushing assembly ascends and extrudes gas, and finally high-pressure gas is sprayed out towards grain particles and permeates into gaps of the grain particles to form an air cushion effect; the friction force among grain particles is reduced, the mobility of the grain particles is enhanced, the grains are conveniently conveyed by the spiral auger, the situation that the grains are accumulated at the bottom of the spiral auger due to poor mobility of the grain particles, the grains are extruded and are prone to being damaged is effectively prevented, and the integrity of the grain particles is ensured.

The invention relates to a ternary precursor and a preparation method and application thereof, the chemical general formula of the ternary precursor is [NiaCobMnc] 1-d-e (OH) 2 (SrSO4) d * (Sr (OH) 2) e, 0.8 < = a < 1.0, 0 < b < = 0.2, 0 < c < = 0.2, 0 < = d < = 0.0002, and 0 < = e < = 0.0002; the ternary precursor is sphere-like secondary particles formed by stacking primary particles, the primary particles comprise primary particles A and primary particles B, the thickness of the primary particles A is 50nm-150nm, the length of the primary particles A is 300nm-400nm, the thickness of the primary particles B is 20nm-40nm, the length of the primary particles B is 150nm-250nm, the number ratio of the primary particles A to the primary particles B is 0.2-5, and the number ratio of the primary particles A to the primary particles B is 0.2-5. In any two regions with the same area of the ternary precursor, the standard deviation of the content of the primary particles B is less than 1; the porosity of the ternary precursor is 10-20%, and the sulfur content is less than or equal to 600ppm. The ternary precursor is relatively large in specific surface area, good in morphology uniformity, high in tap density and low in sulfur content, so that the specific discharge capacity and the cycle performance of the lithium ion battery positive electrode material can be improved.

The utility model relates to the technical field of plastic drying, and discloses a plastic particle drying structure which comprises a drying box and supporting legs fixedly installed on the wall face of the bottom of the drying box, a heating mechanism capable of conducting drying is arranged in the drying box, and the heating mechanism comprises a heating disc and an air inlet pipeline. The upper side wall face of the drying box is in sealed connection with a feeding hopper capable of conducting material injection, a driving motor capable of conducting transmission is arranged on the top wall face of the drying box, the output end of the driving motor is in transmission connection with a connecting rotating rod, and the connecting rotating rod is rotationally installed on the top wall face of the drying box. During use, materials are injected into the drying barrel through a feeding hopper, plastic products can be dried through a heating mechanism, meanwhile, a driving motor is started, a connecting rotating rod starts to rotate, a connecting rod drives the drying barrel to rotate, and the drying barrel drives plastic particles in the drying barrel to move; and the gelatinization phenomenon caused by accumulation of plastic particles can be avoided, and the product quality is improved.

The invention provides an AI algorithm for automatically generating a solid-state battery material formula and application, and relates to a solid-state battery material formula generation method, device and equipment, a medium and a product, and relates to the technical field of battery materials. The method comprises the following steps: generating a plurality of initial parameter groups based on a candidate particle size set and a candidate particle number set; obtaining a particle accumulation constraint condition; inputting the plurality of initial parameter groups and the particle accumulation constraint conditions into a constraint layer to obtain a plurality of constrained parameter groups conforming to the particle accumulation constraint conditions; inputting the constrained parameter groups into a battery performance parameter prediction model to obtain battery performance parameters corresponding to the constrained parameter groups; and based on the battery performance parameters corresponding to each constrained parameter group, determining a target parameter group in each constrained parameter group, and generating a solid-state battery positive electrode formula based on the target parameter group. The embodiment of the invention can optimize the positive electrode material system and improve the overall performance of the battery.

The invention provides a method and a system for wirelessly monitoring blockage of a filter screen of a dust remover. The method comprises the following steps: irradiating the surface of a filter screen by multi-wavelength laser to collect optical scattering data of particle accumulation, and extracting scattering angle distribution and intensity change characteristics under different wavelengths; collaborative analysis is carried out on a structured sequential sequence of particle accumulation distribution formed by multi-source scattering, a dynamic correlation mode is captured through scattering mode correlation processing, and an abnormal spectrogram fused with multi-wavelength collaboration is constructed; and mapping the data to a filter screen three-dimensional space coordinate to generate particle stacking density three-dimensional distribution data, generating a blockage position and severity level monitoring result according to a density over-threshold value, and pushing the blockage position and severity level monitoring result to a mobile terminal for display. According to the invention, three-dimensional space positioning and real-time grading alarm of the blockage degree of the filter screen are realized, and the maintenance accuracy of the purifier and the user response timeliness are improved.

The invention discloses a ceramic nanofiber membrane and preparation thereof, a catalytic ceramic nanofiber membrane and preparation and application thereof. The preparation method of the ceramic nanofiber membrane comprises the following steps: (1) cleaning a particle accumulation state ceramic membrane support body; (2) spraying the mullite fiber membrane layer slurry on one surface of a supporting body for multiple times by using a spraying method, after each spraying, applying negative pressure to a membrane for a preset time, then drying, and after the last drying, forming a spraying layer on one surface of the supporting body; and (3) sintering the obtained membrane at high temperature to obtain the ceramic nanofiber membrane which is provided with a support body and a mullite fiber membrane layer which is stably attached to one surface of the support body and is of a net-shaped structure formed by staggering and stacking mullite fibers. The catalytic ceramic nanofiber membrane comprises a ceramic nanofiber membrane and a catalyst loaded on the surface of the ceramic nanofiber membrane and in membrane holes. The ceramic nanofiber membrane provided by the invention has the advantages of high porosity, high mechanical strength, high membrane flux and the like, and is beneficial to subsequent catalyst loading and application in water treatment.

The present invention discloses a method for simulating and predicting the maximum packing density of a multi-size particle filling system, comprising: S1, determining characteristic parameters of the filling particles of the filling system; S2, establishing a simulation box and setting an initial packing density; S3, inserting the filling particles into the simulation box to complete initial modeling; S4, reducing the simulation box according to a predetermined ratio to increase the packing density; S5, performing relaxation under the conditions of a microcanonical ensemble; S6, calculating the packing density and the relative overlap change rate of the filling particles; S7, determining whether the relative overlap change rate is greater than a threshold: if so, proceeding to step S8; if not, executing steps S4 to S6 again; S8, calculating the maximum packing density of the system based on the packing density and relative overlap change rate calculated in step S6. The present invention can simulate and predict the maximum packing density of a multi-size particle filling system, provide effective guidance for the filler gradation scheme of the filling system, shorten the product design and development cycle, and reduce costs.

The utility model discloses a device for classifying waste metal after fine crushing treatment, which comprises a base, a mounting frame and a conveying belt, and further comprises a material uniformizing mechanism and a magnetic separation mechanism which are positioned above the conveying belt, and a vibration material distributing mechanism fixed on the base, and the vibration material distributing mechanism comprises a plurality of material distributing grooves; the conveying belt is fixedly connected to the base through the conveying belt fixing frame, and the vibration distributing mechanism is located below a discharging port of the conveying belt. According to the whole structure of the device, efficient and automatic metal sorting is achieved through multiple screening, grading and stable design, and the sorting precision, stability and working efficiency of equipment are greatly improved; the problems that in the prior art, non-magnetic metal and metal particles with small density difference cannot be effectively separated through a single screening mode, and the screening precision is affected by metal particle accumulation are solved.

The present invention discloses a grading method for high-purity ultrafine spherical powder. By mixing raw powders and additive powders with different particle size distributions, a multi-peak distribution of the mixed powder in particles of each particle size level is formed. According to the classical continuous particle packing theory, the present invention rationally matches ultrafine spherical alumina powder and high-purity ultrafine spherical silica powder with different particle size distributions in a specific proportion. Through the ratio, close packing is achieved in a specific particle size region, achieving the effect of high filling rate during application, with the volume fraction being up to more than 90% at most. At the same time, the oil absorption values of the ultrafine spherical alumina powder and the high-purity ultrafine spherical silica powder are also reduced.

Provided in the present application are a sodium-ion battery positive electrode precursor having a core-shell structure, a manufacturing method therefor, and the use thereof. Said precursor comprises a core and a shell on the surface of the core, the core comprising NiaFebMn1-a-b-cMc(OH)2, wherein 0.3≤a≤0.5, 0.2≤b≤0.4 and 0≤c≤0.01, and the shell comprising NixCuyFezMn1-x-y-z-vNv(OH)2, wherein 0.1≤x<0.3, 0.02≤y≤0.2, 0.2≤z≤0.4 and 0≤v≤0.01, and the shell containing pores. In said precursor of the present application, primary particles of the core are of a dense packing while primary particles of the shell are of a loose packing, so that compaction density, energy density, porosity and specific surface area of the material are improved, thus improving properties of the material.

The invention belongs to the technical field of lithium batteries, and relates to a material particle size grading optimization method and system based on a genetic algorithm and discrete element simulation. The method comprises the following steps: carrying out particle size distribution test on a material to be optimized to obtain a particle size distribution result as an optimizable particle size range; carrying out three-component peak separation on the obtained particle size distribution result, and approximately representing the particle size distribution of the material through three-component spherical particles; optimizing the stacking density of the three-component spherical particles in an optimizable particle size range by utilizing a genetic algorithm, and enabling the optimized stacking density of the three-component spherical particles to be approximate to the compaction density of the three-component spherical particles; obtaining physical property data of the material; and carrying out simulation verification on the compaction density of the three-component spherical particles obtained by optimization by using a discrete element model according to physical property data of a material. According to the method, optimization design is carried out on the particle size of the material based on discrete element analog simulation and a genetic optimization algorithm, and the large and small particle gradation of the high-compaction-density material can be rapidly screened.

The invention discloses a control method for preventing material blockage of an alloy gate valve, which belongs to the technical field of material conveying and comprises the following steps: S1, optimizing dynamic parameters of a gate, including regulating the length of the gate and controlling the inclination angle; s2, optimizing an opening and closing action process, including stroke subsection control and vibration-assisted material cleaning; s3, the sealing surface is self-cleaned through the periodic maintenance action; the periodic maintenance action comprises the step of executing full-stroke cleaning once after 10 opening and closing cycles are completed every time, material retention in the gate valve can be reduced, blockage caused by particle accumulation is effectively prevented, the accuracy and the sealing performance of the opening and closing action of the gate valve are improved, and meanwhile the shutdown maintenance frequency caused by material blockage is reduced.

The invention discloses a synthesis method of a high-power anti-water-absorption phosphate positive electrode material, which comprises the following steps of: performing micro-nanocrystallization on a precursor, uniformly dispersing by sanding on the basis, fully refining the precursor, a carbon source and a lithium source in a liquid phase system by sanding, and realizing highly uniform contact, thereby obtaining the high-power anti-water-absorption phosphate positive electrode material. The carbon source can uniformly coat the surfaces of the particles and be embedded on the interfaces, so that the particles are in contact with channels and form a continuous conductive phase after heat treatment, and the uniformly compounded primary particles are compactly packaged into a spherical secondary structure through spray drying and secondary granulation, so that the exposed specific surface area is reduced, and an internal conductive contact network is locked; therefore, pulping viscosity fluctuation and gelation risks caused by moisture adsorption and abnormal solvent adsorption are inhibited, an internal conductive network and particle accumulation morphology are locked, and finally, synergistic improvement of conductivity, water absorption resistance and processing consistency is realized.

The invention discloses a coal particle sampling device capable of movably intercepting and sampling, and relates to the technical field of coal optionality. Comprising a supporting stand column, a supporting transverse plate fixedly arranged at the top of the supporting stand column, a collecting supporting plate fixedly arranged on one side of the supporting stand column and multiple sets of sampling and collecting bins horizontally arranged at the top of the collecting supporting plate at intervals. And a second driving motor is arranged above the supporting transverse plate, and the output end of the second driving motor is connected with a rotating rod part. According to the sampling device disclosed by the invention, the two groups of sampling baffle blocks which are inclined inwards are arranged below the sampling handrails, so that the distance between the two groups of sampling handrails is larger than particles, and the distance between the bottoms of the two groups of sampling baffle blocks is smaller than the sizes of the particles, so that the particles are arranged between the two groups of sampling baffle blocks and the two groups of sampling handrails; other coal particles can fall down from the two sides along the sampling handrails, the situation that the coal particles are accumulated is avoided, the distance between the two sets of sampling handrails can be adjusted, and therefore sampling of the coal particles with different particle sizes can be achieved.

The invention relates to an outdoor particle furnace and belongs to the field of outdoor devices. The outdoor particle furnace comprises a furnace body, a rotating plate and a rotating mechanism. The rotating plate is arranged in the furnace body so as to divide the furnace body into a combustion cavity and a containing cavity which are arranged in the gravity direction, and a protrusion is arranged on the side, facing the combustion cavity, of the rotating plate; the rotating mechanism is at least partially arranged in the containing cavity, and the rotating mechanism is used for driving the rotating plate to rotate so as to drive the protrusions to stir the granular comburent; the rotating mechanism drives the rotating plate to rotate so as to drive the protrusions, located in the combustion cavity, of the rotating plate to rotate, so that particles are stirred to be looser, the particles can be more evenly distributed, later-added particles are prevented from being accumulated at the same position, the particles can be evenly combusted, and the contact area of the particles and air is increased; therefore, sufficient combustion of the particles is facilitated.

The invention discloses a method and a system for forming an elliptical particle accumulation body, which are applied to the technical field of geotechnical engineering and material science, and the method comprises the following steps: defining a space boundary and a calculation rule; generating bottom-layer elliptical particles according to a placement sequence from left to right, and placing the bottom-layer elliptical particles: determining an arc section in contact with a boundary line of the container, and determining the center of the first bottom-layer elliptical particle based on translation and offset calculation of a left boundary and a lower boundary; bottom-layer elliptical particles are randomly generated, the bottom-layer elliptical particles and the previous elliptical particles form an invasion block, and based on line segment information after the lower boundary and the right boundary of the container are shifted, putting judgment of the bottom-layer elliptical particles is carried out; and generating and placing upper-layer elliptical particles: randomly generating the upper-layer elliptical particles, traversing a current accumulation body surface layer elliptical particle set to form a corresponding invasion block body, and carrying out putting judgment on the upper-layer elliptical particles based on line segment information after the left boundary, the right boundary and the upper boundary of the container are shifted. According to the invention, the generation of the elliptical particle accumulation body with high density and low porosity is realized.

The invention belongs to the technical field of 3D printing concrete materials, and particularly relates to 3D printing waste glass recycled lightweight aggregate concrete and a preparation method thereof. The concrete is prepared from the following raw materials: cement, silica fume, fine aggregate, waste glass recycled lightweight aggregate, a viscosity modifier, nano silicon dioxide, nano cellulose fibers, a water reducing agent, fly ash, a defoaming agent and water. The lightweight 3D printing concrete with different densities is prepared by replacing sand with the lightweight aggregate prepared by recycling the waste glass, the tackifier, the thixotropic agent, the nano-crystalline cellulose fiber, the water reducer and the fly ash are used for competitive synergistic effect to improve the water-retaining property and the rheological property, a nano-micron multi-scale synergistic system is constructed, multi-stage particle accumulation is effectively realized, and the 3D printing concrete with different densities is prepared. The problems that the constructability is difficult to improve while the density of conventional 3D printing lightweight aggregate concrete is reduced and the lightweight aggregate of low-density 3D printing concrete floats upwards are solved, the printable window time is prolonged, and the interface performance of an aggregate matrix is enhanced.

The invention relates to an intelligent impact tendency evaluation method based on multitask gating mechanism coal, which belongs to the technical field of crossing of electric digital data processing and geological engineering, and comprises the following steps of: 1, collecting related data, and constructing a data set; 2, training a coal body impact tendency intelligent evaluation model based on multi-task learning by using the constructed data set, so that the model learns nonlinear mapping of a coal body microstructure and macroscopic mechanical properties; and 3, inputting particle accumulation and joint structure information of to-be-detected coal into the model trained in the step 2, carrying out regression analysis to obtain a coal impact tendency index, and judging the coal impact tendency according to a standard. According to the method, a low-cost and high-reliability intelligent solution is provided for mine dynamic disaster prevention and control, and the method has technical innovation and engineering application value.

The present invention discloses a flexible thermoelectric composite film, a preparation method and its application. The preparation method comprises: (1) mixing tellurium antimony bismuth powder with a polymer solution to obtain a mixture, and ball milling the mixture under a protective atmosphere to obtain a thermoelectric composite slurry; (2) using polyimide as a substrate, tape-casting the thermoelectric composite slurry onto the substrate, and obtaining the flexible thermoelectric composite film after drying and discharge plasma annealing. In the present invention, the composite film after SPA treatment is transformed from a loose particle stacking structure to a composite structure with interconnected polymers, forming a large-area interconnected network structure, and the thermoelectric particles are embedded in the PVDF matrix. Such a structure is conducive to the conduction of electrons, thereby facilitating the improvement of electrical conductivity. The method adopted by the present invention greatly shortens the preparation process time, and the prepared organic / inorganic composite material has a high power factor.

The sorting device for modified plastic production comprises a main machine body, fixing plates are fixedly installed on the two sides of the inner wall of the main machine body, a movable frame is installed between the two sets of fixing plates, two sets of connecting plates are symmetrically and fixedly installed on the two sides of the movable frame, and the four sets of connecting plates are in sliding connection with the two sets of fixing plates respectively. And telescopic rods are fixedly installed at the four corners of the top side of the movable frame, and the top ends of the four sets of telescopic rods are jointly and fixedly connected with a sieve plate. The connecting rods can be driven to move flexibly through the cooperation of the driving motor and the rotating disc, the movable frame can be driven to move flexibly through the cooperation of the connecting rods and the connecting pins, and the sieve plate can move in the horizontal direction and the vertical direction at the same time through the cooperation of the telescopic rods, the sliding rods and the guide grooves. And low sorting efficiency caused by accumulation of the plastic particles at one position is avoided, and the production efficiency of products is improved.

The utility model discloses a regenerated plastic particle heating device, relates to the technical field of plastic particle processing, and aims to solve the problems that when a large number of plastic particles are fed, part of the plastic particles are accumulated at the bottom of the device, and the plastic particles accumulated at the bottommost part are heated unevenly due to the fixed length of a stirring rod. The heating effect on the plastic particles is influenced. The device comprises a heating box, a feeding part and a discharging part, the discharging part comprises a discharging box fixedly arranged on the top wall outside the heating box, a driven gear is rotationally connected to the outer side wall of the discharging box, a tooth-missing gear is arranged below the driven gear in a meshed mode, a discharging disc is rotationally connected to the inner side wall of the discharging box, and the lower portion of the discharging disc is meshed with the tooth-missing gear. According to the plastic particle feeding device, an intermittent discharging structure is formed at the top of the heating box, plastic particles can be intermittently fed into the heating box, and the problems of plastic particle accumulation and uneven heating are reduced.

The invention belongs to the technical field of electroacoustics, and particularly relates to a sound production device and electronic equipment, the sound production device comprises a shell, a sound production monomer and a breathable separator, the sound production monomer and the breathable separator are arranged in the shell, the sound production monomer is matched with the shell to define a front sound cavity and a rear sound cavity in the shell, and the rear sound cavity is filled with a sound absorbing material; the breathable separator is used for isolating the sound-absorbing material and the sound-producing monomer, the sound-absorbing material comprises first molecular sieve powder particles with the average particle size of 10-50 microns and sound-absorbing particles with the average particle size of 150-1000 microns, and the sound-absorbing particles are sphere-like particles formed by bonding a plurality of second molecular sieve powder particles; and the air-permeable aperture of the air-permeable separator is smaller than the minimum particle size of the first molecular sieve powder particles. According to the invention, the first molecular sieve powder particles can be filled in the narrow space of the rear sound cavity and the gaps where the sound-absorbing particles are stacked, so that the filling amount of the sound-absorbing material in the rear sound cavity is increased, the resonant frequency of the sound production device is effectively reduced, and the low-frequency acoustic performance of the sound production device is improved.

This invention discloses a centrifugal pump impeller structure for preventing clogging of chemical media containing solid particles, relating to the technical field of centrifugal pump impeller structures. It includes a centrifugal pump body with a pump chamber and an inlet and outlet chamber communicating with it. Adjustment chambers communicating with the outlet chamber are provided on both outer walls of the centrifugal pump body. A rotating shaft is rotatably mounted on the centrifugal pump body along the axis of the adjustment chamber. A double-suction impeller located within the pump chamber is detachably mounted on the rotating shaft. The double-suction impeller has multiple spirally arranged blades, with inlet channels for media passage formed between adjacent blades. By providing cylindrical protrusions on both sides of the double-suction impeller, and using a first air nozzle corresponding to the inlet channel and a second air nozzle corresponding to the outlet channel, along with a purging component to deliver high-pressure gas, active purging of the inlet and outlet channels is achieved. This allows for real-time cleaning of solid particle deposits on the blade surface, inlet and outlet channels, and in the gaps, preventing impeller clogging.

The utility model discloses a kind of noble metal drying devices, it is related to noble metal processing technical field, including support column, drying cabinet, door, vibration mechanism being set on drying cabinet, first sieve basket, second sieve basket, third sieve basket, fixing frame, fixed mechanism being set on fixing frame, rotating mechanism being set on drying cabinet, knock key, support plate, heating mechanism being set on support plate;Through the cooperation between vibration mechanism, first sieve basket, second sieve basket, third sieve basket, rotating mechanism, knock key and heating mechanism, rotating mechanism drives knock key to impact vibration mechanism constantly, so that vibration mechanism drives first sieve basket, second sieve basket and third sieve basket vibrate constantly, to realize the step-by-step screening of different particle size noble metal particles, avoid particle accumulation, simultaneously promote noble metal particles even heat by continuous vibration, significantly improve drying efficiency and effect.

Concrete composition system with nanosilica, RGO and industrial waste, comprising: an ordinary Portland cement (OPC) that serves as the primary binder in the mixture, with part of the OPC partially replaced by a combination of industrial waste and nanomaterials, including: Copper waste, which is contained in a proportion of 5 to 60 wt% of the cement content and serves as additional cement material from mining waste; Nanosilica, which is present in a proportion of 2 to 6 wt% of the cement and has a high pozzolanic reactivity to improve hydration and microstructural compaction; and reduced graphene oxide (rGO), which is present in trace amounts of 0.03 to 0.08% by weight of the cement and serves as a nano-reinforcing agent to improve crack resistance and tensile behavior; Granite powder, added as a filler in a proportion of 5 to 30 percent by weight of the total mixture, contributing to improved particle packing and reduced porosity; Fine and coarse aggregates in standardized proportions that form the granular structure of the concrete; Water added in a controlled water-binder ratio suitable to initiate cement hydration and maintain the workability of the fresh mix; a superplasticizer additive included in appropriate dosage to reduce water requirements and maintain fluidity without compromising mechanical performance.

The utility model relates to the relevant technical field of PE (polyethylene) production, in particular to an air conveying mechanism of a PE particle production line, which comprises a material conveying pipe, a second transmission shaft, a main shaft, a plurality of scrapers, a plurality of structural grooves, a first air inlet, a second air inlet, a third air inlet and a fourth air inlet. And a feeding hopper is fixedly connected above the conveying pipe. The main shaft is driven by the first motor to rotate, the scraping plate on the main shaft scrapes PE particles adsorbed on the inner wall of the conveying pipe, the contact area of the scraping plate and the particles is increased through the structural groove formed in the scraping plate, the scraping effect is improved, and the conveying problem caused by particle accumulation in the conveying pipe is reduced; the second motor drives the rotating shaft to rotate, the blades on the rotating shaft convey particles entering the feeding hopper downwards along with the rotating shaft, meanwhile, the particles attached to the inner wall of the feeding hopper are removed, accumulation of the particles in the feeding hopper is reduced, and the influence on follow-up conveying is reduced.

This invention relates to a closed-loop control method and system for improving the compaction density of LFP electrodes. The method involves real-time acquisition of images of the micro-particle packing of the coating slurry, synchronized with the rolling mill operation data; extraction of micro-pore distribution features from the images, establishing a mapping relationship between these features and the material's fractional-order constitutive parameters; combining real-time rolling pressure and roll gap data, obtaining the equivalent fractional-order derivative order and rheological viscosity of the electrode material through rapid inversion calculation; inputting the viscoelastic properties into a physically constrained recurrent neural network to predict the full-cycle thickness evolution curve of the electrode, including elastic rebound, creep, and relaxation processes, and calculating the predicted compaction density based on the steady-state value of the curve; constructing a planning model with the goal of minimizing the residual between the predicted density and the set target, and jointly optimizing the roll gap position compensation and hot roller heating power online to achieve closed-loop control of the compaction density.

The invention discloses a 3D printing set cement ultra-early elastic modulus prediction method, and belongs to the field of cement-based material mechanical property research. The method comprises the following specific steps: carrying out an ultra-early elastic modulus test on a 3D printing set cement test piece by adopting a press-in method, and calculating an experimental value of the elastic modulus through mechanical response under a constant strain rate control condition; constructing a set cement ultra-early RVE model, and proposing a hydration degree quantitative calculation method based on a hydration reaction process; carrying out equivalent calculation on matrix phase elastic parameters forming the set cement based on a particle accumulation theory, and predicting a calculated value of the elastic modulus of the set cement by combining a micromechanics self-consistent model; the ultra-early rheological characteristics of set cement are considered, the model is corrected and optimized, and the precision of the prediction model is improved by combining indentation method data fitting. According to the method, the press-in method and the RVE model are combined, a set cement ultra-early time-varying elastic modulus prediction system is constructed, and technical support is provided for early mechanical research of 3D printing cement and building structure forming control optimization.

The utility model relates to the technical field of plastic particle packing, in particular to a damp-proof plastic particle packing device for regeneration. According to the technical scheme, the device comprises a base, a containing barrel and a sealing plate, a fixing frame is fixedly installed on the upper surface of the containing barrel, a first hydraulic cylinder and a vacuum pump are fixedly installed on the upper surface of the fixing frame, the sealing plate is fixedly connected to the output end of the first hydraulic cylinder, and air cylinders are symmetrically and fixedly installed at the positions, close to the two sides of the upper surface, of the outer surface of the containing barrel; the output ends of the two air cylinders are fixedly connected with hollow plates, adsorption holes are formed in the inner sides of the two hollow plates, and ultrasonic sealing plates are fixedly installed at the positions, below the adsorption holes, of the inner sides of the two hollow plates. The reprocessed plastic particle vacuum packaging device facilitates vacuum packaging of reprocessed plastic particles, so that the sealing performance is improved, the reprocessed plastic particles are prevented from being contaminated by moisture due to damp, and the quality and later use of the reprocessed plastic particles are guaranteed.