17 results about "Grain shape" patented technology

The present disclosure relates to a system, a non-transitory computer readable medium and a method for determining a minimum amount of slurry to be added to a concrete mixture. This comprises measuring a plurality of n particles and determining, for each particle i: a particle volume (I), a particle surface area (II), a particle maximum size (III), a spherical volume (IV) and a spherical surface area (V) associated with a sphere having a diameter equal to the particle maximum size (III), and a remaining free surface. Then, for the plurality of particles, the shape irregularity factor is determined based on the remaining free surfaces of all n particles and the particle volume (I). The shape irregularity factor is used to determine a minimum amount of slurry for binding with a plurality of n particles to create a constructable concrete mixture, and a control signal is sent to a concrete preparation system.

The invention discloses a particle shape and particle size detection method in the melting suspension granulation process of an energetic material, which comprises the following steps: collecting a liquid drop image in the process of heating and dispersing the energetic material into a dispersion medium; determining droplet size distribution data according to the droplet image; determining whether the droplet size distribution meets a cooling crystallization condition, if so, performing crystallization treatment, and if not, adjusting the stirring rate until the droplet size distribution meets the cooling crystallization condition; crystallization of the energetic material is completed, and an energetic material crystal particle image is collected in the crystallization process; according to the energetic material crystal particle image, determining whether the crystal particle diameter distribution meets the crystallization and granulation ending condition or not, if yes, ending granulation detection, and if not, reheating to the melting temperature of the energetic material, then returning to perform liquid drop image acquisition, and if yes, ending detection until the crystallization and granulation ending condition is sufficient. According to the method, real-time dynamic monitoring of the melt crystallization spheroidization process of the energetic material is achieved, and the hysteresis problem of traditional off-line detection is solved.

The utility model discloses a gravel blanking guiding device which comprises a support and a collecting frame arranged under the support and used for containing gravel and further comprises a crushing unit arranged at the upper end of the support and used for crushing the gravel. The material guiding unit comprises an upper material guiding assembly arranged on the upper portion of the crushing unit and used for guiding the raw materials into the crushing unit, and a lower material guiding assembly arranged on the lower portion of the crushing unit and used for guiding the crushed gravel into the collecting frame. Gravel which cannot directly penetrate out of an opening of the side blanking hole or the lower blanking hole due to the fact that the grain size or the grain shape is unqualified is crushed by the breaking teeth rotating at a high speed until the size is qualified, and then the gravel penetrates out of the opening of the side blanking hole or the lower blanking hole, so that the gravel with the unqualified grain size or the grain shape can be screened and crushed; and qualified gravel can be further crushed, and the quality grade of subsequently prepared concrete is greatly improved.

The invention relates to the technical field of concrete material performance prediction, in particular to a mechanical property prediction method and system for machine-made sand concrete. The method comprises the following steps: obtaining grain shape characteristics and grading characteristics of machine-made sand and hydration potential characteristics of a cementing material; fusing the grain shape feature, the grading feature and the hydration potential feature through a graph neural network to obtain a raw material intrinsic fusion feature; processing microscopic structure image features mapped by a real grain shape by using a knowledge graph to obtain a stress nephogram and a damage evolution feature, and obtaining a physical constraint gradient feature by combining the stress nephogram, the damage evolution feature and an experiment real strength value; quantifying the correlation among the structure image features, the mesoscopic mechanical response features and the mechanical properties of the concrete to obtain strong correlation mesoscopic structure features; and on the basis of the raw material intrinsic fusion features, the physical constraint gradient features and the strong correlation microstructure features, utilizing a multi-modal fusion physical information neural network to predict the mechanical properties of the machine-made sand concrete.

This application provides a method and apparatus for precise rice seed sorting based on the fusion analysis of grain shape and color features, relating to the field of rice seed sorting. It solves the technical problem that existing technologies typically process grain shape and color information separately, failing to effectively identify composite defects involving both deformation and color changes. The method includes: acquiring a color image of the rice seeds to be sorted, and performing single-grain segmentation to extract the contour of each grain and its corresponding surface pixel region; calculating the grain shape anomaly index for each grain based on the contour; calculating the color anomaly index for each grain based on the surface pixel region; inputting the grain shape and color anomaly indices into a pre-trained lightweight fusion model to output a comprehensive quality score for each grain; comparing the comprehensive quality score with a set score threshold, and removing unqualified grains from the normal flow path. This application is used in the rice seed sorting process.

A rod of technical grade titanium for biomedicine has a structure consisting of ultra-fine grains of alpha phase with a hexagonal close-packed lattice, a fibrous deformation texture and a grain-subgrain structure type, wherein the volume fraction of elongated grains in a size range of 0.1-3 µm with a grain shape factor greater than 2 in mutually perpendicular planes is not less than 80%. Subgrains formed inside the elongated grains have low-angle boundaries that are misoriented from adjacent subgrains by an angle of up to 15°. A method for producing a rod of technical grade titanium for biomedicine includes intense plastic deformation of a billet of technical grade titanium at a temperature of not more than 450°С by rotary swaging at strain rates in a range of 10-2 to 10-4 s-1 and with a total true strain value of e≤2.2. As a result of the formation of an ultra-fine structure, a rod of technical grade titanium produced using the claimed method has high mechanical characteristics.

The utility model relates to the technical field of shoe material processing, in particular to a granular shoe sole forming mold. Which comprises an upper mold, a lower mold and particle forming modules, and a sole forming cavity is formed after the upper mold and the lower mold are assembled, and is characterized in that a plurality of mounting grooves are formed in the inner surface of the sole forming cavity, and the particle forming modules are detachably mounted in the mounting grooves; the shape, the size and the distribution position of the particle forming module can be replaced or adjusted as required; according to the sole forming mold capable of adjusting the particle distribution, the shape, the size and the distribution of the particles are flexibly adjusted by arranging the replaceable or adjustable particle forming modules, and the diversified requirements on the anti-skid performance of the sole in different scenes can be met.

The utility model relates to a kind of mine machinery technical field, disclose a kind of sand making machine crushing cavity structure, including crushing cavity, the inside of the crushing cavity is provided with crushing mechanism, the crushing mechanism is used to crush material, the bottom of the crushing mechanism is provided with discharge mechanism, the discharge mechanism is used to discharge material quickly, the crushing mechanism includes annular lining, the inner wall of the annular lining is fixedly connected in the inside of crushing cavity, the inside of the annular lining is fixedly connected with multiple positioning plate, the left side of multiple positioning plate is fixedly connected with fixed plate, the inside of the annular lining is fixedly connected with multiple taper surface shaping plate.In the utility model, material is thrown to crushing mechanism by throwing material disc, material is broken by multiple times impacting positioning plate and taper surface shaping plate, protective block blocks material rebound, multiple impact breaking and shaping of material are realized, the effect that finished product grain shape is neat, improve sanding rate and quality.

The invention discloses a sand making machine with the adjustable sand grain size, and relates to the technical field of sand making machines, the sand making machine comprises a screening treatment box, a screening assembly is installed in the screening treatment box, a secondary crushing box is installed at the upper end of the screening treatment box, and a crushing assembly is installed in the secondary crushing box; transmission assemblies are installed on the left side and the right side of the crushing assembly correspondingly, and a control mechanism is installed on the transmission assembly located on the left side. A primary crushing part is installed above the middle of the secondary crushing box, a frame body is further installed on the secondary crushing box, a feeding hopper is installed on the frame body, and an adjusting mechanism is installed on the primary crushing part. According to the sand making machine with the adjustable sand grain size, secondary crushing is conducted on materials through cooperation of the primary crushing part and the crushing assembly, the productivity is guaranteed, the grain shape and grading quality of finished sand are improved, the primary crushing grain size and the secondary crushing grain size can be adjusted at the same time, and the adjusting efficiency and coordination are improved.

To accurately estimate a three dimensional shape of particles from an observation result of two-dimension.SOLUTION: (A) calculating, from a two-dimension image of a plurality of particles to be estimated, an indicator value in a two-dimension of shapes of the particles, (B) generating, from the two-dimension image, a plurality of estimated three dimensional shapes of a first generation, and (C) calculating, for the plurality of estimated three dimensional shapes of the first generation, a feature parameter indicating a shape feature, (D) generating a plurality of estimated three dimensional shapes of the next generation using a control parameter and a feature parameter based on a relationship between an indicator value in the two-dimension of the plurality of estimated three dimensional shapes of the current generation and an indicator value in the two-dimension of the grain shape, and (E) evaluating the relationship between the indicator value in the two-dimension of the plurality of estimated three dimensional shapes of the next generation and the indicator value in the two-dimension of the grain shape, and further executing a process of generating the plurality of estimated three dimensional shapes of the next generation until a process termination condition is satisfied.SELECTED DRAWING: Figure 1

The invention relates to the technical field of solid propellant grain processing, in particular to a solid propellant grain self-adaptive shaping error compensation method, system and device and a storage medium. The compensation method comprises the following steps: acquiring real-time error data in a grain shaping process, wherein the real-time error data is a deviation between a current shape parameter and a target shape parameter of a grain; and updating a medicine column shaping error prediction model based on the real-time error data, wherein the error prediction model represents a mapping relationship between shaping process parameters and errors. According to the method, an integrated error compensation framework of real-time error sensing, dynamic model updating, self-adaptive compensation decision making and execution control is constructed, and the technical problem that an existing fixed model cannot adapt to dynamic changes in the grain shaping process is effectively solved.

The invention discloses a grain shape optimization grading control device for tuff machine-made sand, and relates to the technical field of building material processing. The device comprises a feeding unit, a grain shape optimization unit, a real-time monitoring unit, a grading control unit and an intelligent control system. The core of the invention lies in that the intelligent control system carries out calculation through a built-in comprehensive quality evaluation model containing sphericity, fineness modulus and stone powder content based on real-time grain shape, grading data and stone powder content fed back by a real-time monitoring unit; and the rotating speed of the grain shape optimization unit and the vibration frequency and the airflow speed of the grading control unit are dynamically adjusted by using a feedback control algorithm, so that integrated and intelligent closed-loop control of grain shape optimization and grading control is realized. The method is particularly suitable for solving the technical problem that in tuff machine-made sand production, the content of needle-sheet-shaped particles and stone powder is difficult to stably control, and the stability of product quality and production benefits can be effectively improved.

The present application relates to a kind of mechanical particle fusion machine, including frame, main shaft and shell, main shaft driving mechanism is installed on the frame, the first end plate of shell is equipped with installation through-hole, rotating sealing mechanism is equipped between main shaft and shell, the outer circumferential surface of the outer end of main shaft is fixedly installed with the stirring paddle in shell, stirring paddle is also fixedly installed on main shaft with scraper and pressing plate located outside stirring paddle, scraper and pressing plate extend along the axial direction of main shaft;Shell is equipped with feeding port and discharge port, discharge port is installed with discharge port cover, and feeding port is installed with feeding port cover;Material enters the inner cavity of shell from feeding port, and stirring paddle repeatedly stirs material to make material mix evenly, pressing plate extrudes and fuses material and makes material particle change shape into spherical under the action of force, scraper shovel material overturn, while meeting the mixing of material, realize the extrusion and fusion of material and take into account the shape of particle increase the bulk density of material, effectively improve the particle mixing efficiency.

The invention relates to the technical field of refractory materials, in particular to a pressureless sintering silicon carbide bearing part and a preparation method thereof.The pressureless sintering silicon carbide bearing part is prepared from, by mass, 91.0-94.5 parts of superfine silicon carbide micro powder, 1.5-4.5 parts of a sintering aid, 2.5-3.5 parts of a binder, 0.3-1.0 part of a dispersing agent and 0.2-1.0 part of a grain shape adjusting agent; the raw materials are firstly subjected to ball milling, spray drying granulation and mixing extrusion to obtain a biscuit, and then the biscuit is subjected to pressureless sintering at the temperature of 2100-2200 DEG C in an argon protective atmosphere. According to the invention, adipic anhydride and glycidyl methacrylate dual-modified low-viscosity hydroxyethyl cellulose is selected as a grain shape regulator, so that the viscosity of the slurry can be remarkably reduced, the flowability and dispersion stability of the slurry are synchronously improved, and good process suitability is provided for subsequent spray drying granulation and mixing extrusion molding.

The utility model discloses a ceramsite shaping machine, which particularly relates to the technical field of shaping machines and comprises a machine body, one end of the machine body is provided with a feed port, the other end of the machine body is provided with a sealing plate, the sealing plate is provided with a plurality of discharge ports, and the bottom end of the machine body is provided with a base and a driving mechanism to support the bottom of the machine body. The driving mechanism comprises a motor, a rotating rod, a chain, a supporting rod and a supporting wheel, and the motor drives the supporting wheel on the supporting rod through the rotating rod and the chain to drive the machine body to rotate. The haydite shaping machine can roll and shape haydite, remove dust from screen holes and discharge uniformly, the sealing plate is convenient to disassemble and assemble, the driving mechanism is stable, the shaping quality and efficiency are effectively improved, and the haydite quality and the equipment operability are guaranteed.

The application relates to a device for lifting finished grain type of sandstone aggregate, which comprises a crushing box, a feeding hopper fixedly sleeved with the middle part of the top of the crushing box, a crushing assembly arranged in the inner cavity of the crushing box and close to the top, a screen fixedly connected with the middle part of the side surface of the inner wall of the crushing box, a vibration motor fixedly connected with the left and right sides of the bottom surface of the screen, a recovery box arranged on the left side of the crushing box, and a first connecting pipe fixedly connected with the middle part of the right side of the crushing box. Through mutual cooperation among the components, sandstone can be put into the crushing box, the crushing assembly can initially crush the sandstone, then the sandstone aggregate with unqualified size can be automatically put back into the top of the crushing box, the crushing assembly can again crush the sandstone aggregate, the device can automatically put the sandstone aggregate with unqualified size back into the crushing box for secondary crushing operation, the crushing effect is improved, and the sandstone crushing is more thorough.

The utility model relates to the technical field of detection devices, in particular to a gravel aggregate grain shape on-line detection device which comprises a sampling pipe, a storage hopper, a dispersing mechanism, a conveying belt mechanism and an image acquisition mechanism, the dispersing mechanism comprises a dispersing box, and the vertical section, perpendicular to the advancing direction of the conveying belt mechanism, of the dispersing box is of an inverted trapezoidal structure with the thick upper portion and the thin lower portion. The upper end of the dispersing box is in flexible connection with the lower end of the storage hopper, a long-strip-shaped material dispersing opening is formed in the lower end of the dispersing box, the length direction of the material dispersing opening is parallel to the advancing direction of the conveying belt mechanism, and a driving assembly for driving the dispersing box and the material dispersing opening to do arc-shaped reciprocating motion is arranged on the outer side of the dispersing box. The axis of the arc-shaped reciprocating motion is parallel to the advancing direction of the conveying belt mechanism. In the advancing process of the conveying belt mechanism, the dispersing box and the material dispersing opening do reciprocating motion in the advancing direction perpendicular to the conveying belt mechanism, so that the gravel aggregate in the storage hopper is dispersed and conveyed to the conveying belt mechanism, and detection through the image collecting mechanism is facilitated.