712 results about "Granular material" patented technology

A batch feeding-based multi-stage screening device for granular materials, comprising a housing (1). A quantification assembly (2) is installed at the top of the housing (1), a dust removal assembly (3) is installed outside the housing (1), and an anti-blocking assembly (6) is installed inside the housing (1); the dust removal assembly (3) comprises a mounting plate (305) and a fixed column (304); the mounting plate (305) and the fixed column (304) are both fixedly connected to the outside of the housing (1), a rack plate (306) is slidably connected to the outer surface of the mounting plate (305), a movable rod (311) is fixedly connected to the bottom end of the rack plate (306), a rubber piston (312) is fixedly connected to the bottom end of the movable rod (311), and a filter box (301) is fixedly connected to the outside of the housing (1). A large amount of dust on the surface of rice grains can be adsorbed, filtered and removed by means of the dust removal assembly, thereby improving the quality of rice.

A pneumatic distribution machine for granular material includes a storage container, a delivery fan for generating a main air / material flow, and a distributor head configured to divide the main air / material flow fed to the distributor head into multiple individual air / material flows, a long main delivery line connecting the delivery fan, the storage container, and the distributor head, and a return device that includes a movable deflection element that is configured, in a dispensing position, to feed an individual air / material flow flowing into and inflow region of the return device to a dispensing region, connected to a dispensing line, of the return device, and in a shut-off position, to feed an individual air / material flow flowing into the inflow region of the return device to a return region that is connected to a return line of the return device.

The invention discloses a breakable rock-soil granular material triaxial test simulation method based on a lattice spring-discrete element coupling framework, which comprises the following steps: establishing a triaxial test model rectangular boundary condition, and generating a non-breakable spherical rock-soil granular material in the boundary; replacing the generated non-crushable spherical particle material with rock-soil particles considering particle crushing based on a lattice spring-discrete element coupling frame, and assigning parameters; replacing wall bodies on the two sides of the rectangular boundary condition with a large number of bonded spherical particles to generate a flexible membrane boundary; and applying confining pressure to the boundary of the generated flexible membrane, and carrying out shear simulation. According to the method, the Young modulus and the Poisson's ratio can be matched in a high-precision mode, the heterogeneity of elastic response is reduced, strength degradation and friction characteristics are simulated, and the calculation efficiency is greatly improved.

The invention provides a mixed material quality prediction method and device based on a discrete element method and data driving, and relates to the technical field of granular material mixing, the method utilizes the discrete element method to construct a physical simulation model in a mixing process, can accurately simulate mixing behaviors of granular materials in different mixing devices, and covers various process parameters. And a data driving technology is introduced, a machine learning algorithm is utilized, and a large amount of high-fidelity data generated by DEM simulation is utilized to train a prediction model, so that a hybrid model fusing a physical mechanism and data intelligence is constructed. According to the model, the mixing effect index can be quickly and accurately predicted according to the input mixing process parameters, the corresponding optimal process parameters can be reversely predicted, and the production efficiency is effectively improved. The method aims at solving the problems that in an existing material mixing process, optimization depends on experience, efficiency is low, cost is high, and the material mixing effect is difficult to accurately predict.

A granular material flow control system includes a granular material supply, a discharge head in fluid communication with the granular material supply, and a pan positioned beneath the discharge head to receive granular material discharged from the discharge head, the pan comprising a first end portion and a second end portion. A flow regulator conduit is coupled to a weight sensor, the flow regulator conduit having an inlet opening and an outlet opening, the second end portion of the pan being received in the inlet opening of the flow regulator conduit. A vibratory feeder is coupled to the pan and configured to vibrate the pan to induce granular material in the pan to flow off of an edge of the second end portion into the flow regulator conduit.

The invention relates to the technical field of intelligent warehousing, in particular to a multi-grading granule automatic output system and a using method, a discharging port of a discharging hopper is always located at the rotating center of a second-stage climbing belt conveyor relative to a horizontal belt conveyor, and the falling material stress receiving position of the horizontal belt conveyor is not changed; a discharging hopper on a horizontal belt conveyor is positioned through a discharging hopper laser positioning instrument, and the position of equipment with walking and shoveling functions is accurately solved in cooperation with angles measured by a discharging hopper angle encoder and a traction hole angle encoder; particulate matter monitoring of the stock bin and the collecting hopper is carried out through the three-dimensional laser scanning radar, the high-position laser range finder and the low-position laser range finder, a sensor for detection does not need to be arranged on equipment with walking and shoveling functions, and the equipment with the walking and shoveling functions can be positioned without depending on the sensor arranged on the equipment; therefore, even if a large amount of dust is generated in the particle material conveying process, automatic operation of the output system cannot be hindered.

To properly guide a flow of granular material to a probe in a measuring system for measuring characteristics of the granular material separated from gas by a cyclone separator.SOLUTION: A separation system includes: a cyclone that separates granular material from mixed fluid containing a gas and the granular material; a container that has a truncated conical portion whose diameter gradually decreases downward and is connected to a granular material outlet of the cyclone so that the granular material separated by the cyclone falls while swirling; a conical cone disposed in the container; and a measurement probe that has a measurement unit disposed downstream of a flow of the granular material passing between a lower end of the cone and an inner wall of the container and measures a particle diameter of the granular material passing through the measurement unit.SELECTED DRAWING: Figure 1

The invention provides a system calibration and verification method for a discontinuous graded cohesive soil DEM model. The system calibration and verification method comprises the following steps: (1) preliminarily determining microscopic parameter values of the DEM model; (2) sensitivity analysis of microscopic parameters of each DEM model; (3) gradually optimizing and iteratively analyzing each factor in combination with a sensitivity analysis result to obtain a microscopic parameter optimization value range of the DEM; (4) further optimizing the microscopic parameters of the DEM model based on Box-Behnken test design to obtain multiple groups of optimization parameter combinations; and (5) parameter verification. The method is reasonable in conception, integrates parameter calibration, precision verification and actual experiments, enables the purpose of parameter calibration to be clearer, can provide a more efficient and directional parameter calibration thought for cohesive soil with complex parameter calibration and fewer references, especially fine-grained soil or granular materials with extremely uneven grain size distribution, and is suitable for popularization and application. And meso-scale parameter calibration under quasi-static stress can be converted into parameter calibration and verification under dynamic load stress simulation.

The invention provides a carbon dioxide capture system based on a calcium-based granular material and a control method of the carbon dioxide capture system. The system comprises a reactor, a decomposition bin, a conveying branch and an input branch, the input branch inputs raw flue gas to the reactor; the conveying branch conveys a calcium-based particle material to the reactor by using the heated flue gas; the reactor is used for controlling the internal temperature by selecting the raw flue gas input by the input branch so as to control the adsorption reaction; the decomposition bin is used for controlling the movement of the supporting plate under the mechanical action and the air pressure action so as to guide the flowing of the materials and further control the desorption reaction. A set of complete and ingenious heat circulation process and material circulation process is constructed, the circulation processes are linked with each other, the structural design is ingenious and practical, and while efficient adsorption and desorption of carbon dioxide are guaranteed, the energy utilization efficiency is improved, the energy consumption is reduced, and the equipment maintenance cost and the energy purchase cost are reduced.

The invention discloses a coarse and fine particle inclusion photoelastic sample preparation and contact force chain network analysis method, and relates to the field of particle material mechanical tests, and the method comprises the following steps: calculating target void ratios under different coarse particle contents through a discrete element method; generating a corresponding numerical calculation sample according to the target void ratio and the preset coarse grain content, and exporting related parameters to prepare a coarse and fine grain inclusion photoelastic sample with the same initial compactness; in combination with non-polarization and polarized photoelastic images of the photoelastic sample, extracting intergranular contact force and constructing a contact force network; based on the contact force network, a strong contact force network is extracted and microscomic analysis is carried out, and force transmission characteristic comparison results under different coarse grain content conditions are obtained. According to the method, preparation efficiency of samples with different coarse grain contents and controllability of an initial state are realized, an influence rule of the coarse grain contents on a force chain structure and force transmission characteristics thereof is disclosed based on analysis of a contact force chain network, and the method is of great significance in researching a force transmission mechanism of a coarse and fine grain inclusion system and microstructure characteristics thereof.

The invention discloses a preparation and quality detection device and method for uniformly layered granular materials with different compactness, and belongs to the technical field of geotechnical test equipment.The device comprises a receiving container arranged on an inner supporting frame, the receiving container is connected with a diffuser through a control valve, and a miniature CPT device is arranged between the diffuser and the inner supporting frame; the top of the receiving container is connected with a hopper through a flexible hose, and the hopper is arranged on the top of the outer supporting frame. A porous plate structure in the diffuser is used for controlling the deposition strength, particle distribution is monitored through a micro pressure sensor and a high-speed camera, the aperture is adjusted, multi-dimensional characteristic in-situ detection is achieved by means of multiple sensors of a micro CPT device, and parameters are optimized and optimal deposition parameters are predicted through a controller. According to the preparation and quality detection device and detection method for the layered uniform granular materials with the different compactness, the deposition strength and particle distribution can be accurately controlled, multi-dimensional detection and automatic control are achieved, the test precision and efficiency are improved, and manual errors are reduced.

Seed on-demand system for granular material comprising at least one storage container for granular material, at least one fan to provide a conveyor air flow, and a distributing device with a distributor housing which is designed to receive material from the storage container by means of a material inlet opening and has a conveyor air opening to direct the conveyor air flow in the direction of the material received to generate a mixed flow of conveyor air and material, and at least one distributing segment which forms at least one first conduit with a first receiving opening and a first outlet opening, wherein the conduit is arranged to receive at least a part of the mixed flow by means of the receiving opening and to discharge it from the outlet opening. To avoid disturbances in the distribution of the material and simultaneously generate the mixed flow in an energy-efficient manner, it is provided that at least one stirring element is arranged between the material inlet opening and the first receiving opening to loosen the material in the area where the conveyor air flow is directed onto the material.

The utility model discloses a material receiving device with a centered belt, which belongs to the technical field of ferrous metallurgy and comprises a material receiving hopper positioned right above a material receiving belt, the upper end of the material receiving hopper is provided with a material inlet, and the lower end of the material receiving hopper is provided with a material outlet; the material receiving hopper is characterized in that an inner cavity channel of the material receiving hopper is of a rectangular structure; a plurality of buffer plates are arranged in an inner cavity of the receiving hopper; the included angle between the buffer plate and the horizontal plane is not equal to 0 degree and 90 degrees; the buffer plates comprise a plurality of left wall buffer plates arranged on the left side wall of the inner cavity at different heights and a plurality of right wall buffer plates arranged on the right side wall of the inner cavity at different heights; the receiving hopper with the buffer plate is arranged, and the problems that in the prior art, when large-particle materials fall, impact on the receiving hopper is large, abrasion is prone to occurring, and noise is generated are solved; materials directly impact a material receiving belt, so that deviation and other potential safety hazards are caused; and the receiving hopper lacks the capability of intercepting large materials, so that the belt may be scratched, and the maintenance cost is increased.

The invention provides a discrete element method for simulating fragmentation of granular materials in any form, and belongs to the technical field of computational mechanics. The method comprises the following steps: scanning a particle model through a three-dimensional image to obtain particle surface information, and constructing a geometric structure of the particle through a triangular surface unit; establishing a periodic hexagonal topological grid of the particles by adopting a lattice point method, and obtaining equivalent stiffness and equivalent Poisson's ratio through a strain energy equivalence principle; introducing a breaking criterion at the interface of the topological unit, calculating a stress field in the topological structure of the unit, and analyzing and judging whether the unit is broken or not according to a stress state; the crushed particles directly participate in calculation of the next stage, and multi-stage crushing of the particles is achieved. Uniform construction of particles in any form can be realized; the crushing process of the discrete material under the action of an external load can be accurately reproduced, and the reduction degree is high; the flexible selection of the crushing criterion can be suitable for a plurality of engineering fields; and the crushed particles continue to participate in calculation, and multi-stage crushing of the particles is achieved.

The invention relates to the technical field of geotechnical engineering grade tunnel engineering, and provides a pea gravel hydraulic reclamation process simulation method and system based on discrete elements and application. The method comprises the following steps: S1, determining size parameters of a shield tunnel, macromechanical parameters of duct pieces and surrounding rocks, a hydraulic reclamation position and hydraulic reclamation pressure; s2, determining particle size distribution of pea gravel particles and mesomechanical parameters of pea gravel; s3, constructing three-dimensional models of duct pieces, surrounding rocks, hydraulic reclamation pipes and the tail part of the shield tunneling machine; s4, constructing a pea gravel hydraulic reclamation pressure implementation model; and S5, realizing the model by utilizing the pea gravel hydraulic reclamation pressure, and realizing simulation of the pea gravel hydraulic reclamation process of the single-ring duct piece in a step-by-step hydraulic reclamation mode. The device can simulate the process that pea gravels are continuously blown into gaps, is suitable for research on simulation of mechanical behaviors of discrete granular materials, and has important practical value.

The present application relates to a kind of internal heating type continuous rotary heating process and device, device includes self-heating graphite tube rotary drum, electrode bar, the inner cylinder of the self-heating graphite tube rotary drum is graphite tube, both ends of the graphite tube are connected electric slip ring, and are heated by electrode bar power supply.The present application provides a kind of internal heating type continuous rotary heating device compared with prior art, the inner cylinder of the self-heating rotary kiln of the present application adopts graphite material, graphite cylinder both ends adopt slip ring power supply, graphite tube relies on its resistance heating, and heating electric power is adjusted according to set furnace temperature.The furnace temperature of the present application can be high, can be low, from several hundred degrees to thousands of degrees (2000 ℃ above) can be continuously adjusted, heated material can be powder or granular material, protective gas is inhaled in furnace, presents slightly positive pressure or slightly negative pressure, since it can be isolated air, especially suitable for the coating of carbon material, low-temperature carbonization, high-temperature carbonization can also realize the heating treatment of other materials.

The invention relates to the technical field of bulk material discharging equipment, in particular to an AI automatic loading device. Comprising a stock bin, a connecting pipe and a liftable blanking pipe, a mounting ring is rotatably mounted in the connecting pipe, a foldable material distributing hopper is arranged on the mounting ring, a bendable connecting piece I is connected to the upper end of the material distributing hopper, the tail end of the connecting piece I is fixedly connected with the inner wall of the connecting pipe, and a supporting rod used for supporting the connecting piece I is mounted on the connecting pipe in a sliding manner in the radial direction; a negative pressure pipe coaxially arranged is suspended outside the connecting pipe, a plurality of air pipes are arranged on the inner wall of the negative pressure pipe, air ports in one-to-one correspondence with the air pipes are formed in the outer wall of the connecting pipe, and a sealing ring is rotationally installed on the outer wall of the connecting pipe. Aiming at particle materials, the material distributing hopper is opened to disperse the materials; and for powdery materials, the distributing hopper is folded and stored, so that the situation that dust raising is enhanced due to excessive dispersion of the powdery materials is avoided. When the material distributing hopper is folded, the negative pressure pipe is isolated from a connecting channel of the connecting pipe through the sealing ring, and flying dust is prevented from falling into a negative pressure adsorption system in the pipe.

A self-cleaning type multi-particle-size aggregate reinforced screening device comprises a grinding cylinder, a grinding cylinder bottom, a particle collecting drawer, a micro-powder collecting drawer and a base, a grinding cylinder cover is arranged above a grinding cylinder body, a feeding hopper is arranged at a reserved feeding hole of the grinding cylinder cover, a driving motor is installed above the middle of the grinding cylinder cover, and the grinding cylinder cover is connected with the driving motor. The driving motor is connected with a rotating shaft arranged in the grinding cylinder, the rotating shaft is connected with the grinding roller and the cleaning scraper blade, a grinding cylinder bottom is arranged below the grinding cylinder, a granule collecting drawer is arranged below the grinding cylinder bottom, a micro powder collecting drawer is arranged below the granule collecting drawer, and a grinding cylinder main body is fixed on a base. According to the device, self-cleaning type reinforced screening of multi-particle-size aggregate can be achieved, aggregate reinforcement is achieved, and the multi-particle-size requirement is met.

The utility model relates to the technical field of granulation equipment, and discloses helical ribbon type high-temperature coating granulation equipment which comprises a main body mechanism and a stirring and heating mechanism, the stirring and heating mechanism is located above the main body mechanism, and the main body mechanism comprises an equipment body, a discharging pipe, a discharging pipe, a first protective cover and a mounting frame. The discharging pipe is fixedly mounted at the lower end of the equipment body, the discharging pipe is fixedly mounted at the lower end of the discharging pipe, the first protective cover is fixedly mounted at the right end of the discharging pipe, the mounting frame is fixedly mounted at the inner end of the first protective cover, and the main body mechanism further comprises a rotating motor, a rotating shaft and a helical ribbon discharging roller. According to the helical ribbon type high-temperature coating granulation equipment, through the installation of the main body mechanism, the discharge capacity of the helical ribbon type high-temperature coating granulation equipment is improved, in the actual use process, the granulated materials can be effectively discharged in a helical manner, so that the materials can be discharged at a constant speed, and the use efficiency of the helical ribbon type high-temperature coating granulation equipment is improved.

A dispensing device for granular materials in flakes or grains, characterized in that it comprises: a hopper (2), provided with a lower discharge opening (21); a drawer (3), arranged below the discharge opening (21) of the hopper (2), 5 which defines a containment space and is provided with a free edge (30) allowing the flow of the granular material along at least one main direction (X); a transverse wall (4), lying on a plane transverse to the main direction (X) and arranged at least partly inside the drawer (3); 10 motor means (5), arranged to implement an alternating relative motion along the main direction (X) between the drawer (3) and the transverse wall (4).

The bulk density is increased by applying vibration to a container filled with powder or granular material with a simple structure and without requiring any additional power source. [Solution] In a method for filling powdered or granular material W, in which a number of consecutive containers 2 are moved along a predetermined conveying route R and powdered or granular material W is supplied to containers 2 that have reached a supply position R1, an impact section 40 having a base end 41 fixed outside the movement trajectory S of the container 2, a tip end 42 located inside the movement trajectory S and supported in a cantilevered state, and a connection section 45 that elastically connects between the base end 41 and the tip end 42 is used, and the tip end 42 is abutted against the preceding container 2L and displaced as the preceding container 2L moves, thereby elastically deforming the connection section 45, and when the tip end 42 moves away from the preceding container 2L as a result of further movement of the preceding container 2L, the elastic deformation is released, causing the tip end 42 to impact the following container 2T.

A dosing apparatus includes a doser mechanism that discharges an index amount of a granular material based on drawing the granular material from an intake hopper. A drop-down device is coupled between the intake hopper and a supply hopper and enables enable a flow of the granular material from the supply hopper to the intake hopper through a conduit. The drop-down device restricts a flow rate of the flow of granular material through the conduit based on directing the flow around a slat extending into the conduit. The slat has an upper slat surface that is angled downwards at an inclination angle that may correspond to an angle of repose of the granular material.

The invention relates to a particle material form change-based crusher state monitoring method, medium and equipment, and the method comprises the steps: obtaining the historical point cloud data of a particle material in a crusher, marking the state of the crusher at each historical moment, and extracting the form parameters of the particle material according to the historical point cloud data; comprising morphological parameters of all particles, correlation parameters among the particles, morphological parameters of materials composed of the particles and spatial parameters between the materials and a crusher, and according to the crusher state marked by historical point cloud data and the extracted morphological parameters of the particle materials, constructing and training a model which takes the morphological parameters of the particle materials as input and takes the morphological parameters of the particle materials as output; the state of the crusher is an output monitoring model, current point cloud data is obtained, the morphological parameters of the current particle material are extracted and input into the trained monitoring model, and the state of the crusher is obtained. The problems that in the prior art, accuracy is insufficient, the data processing capacity is weak, cost is too high, environment influence is likely to happen, and adaptability is poor are solved.

The invention relates to the technical field of mixing, in particular to particle material mixing and stirring equipment which comprises a stirring barrel and a stirring device. The stirring device comprises a rotating ring and a one-way assembly; the rotating ring is rotationally mounted on the stirring shaft; a plurality of stirring blade assemblies are annularly distributed on the side wall of the rotating ring; when the stirring shaft rotates, the one-way assembly enables the rotating ring to drive the stirring blade assembly and the stirring shaft to rotate synchronously, and when the stirring shaft stops rotating and materials rotate the rotating ring through the stirring blade assembly under the inertia effect, the one-way assembly allows the rotating ring to rotate relative to the stirring shaft, so that when the stirring shaft stops rotating, the rotating ring rotates synchronously. Impact force of materials acting on the circumferential direction of the stirring shaft due to inertia is buffered, and the stirring shaft is prevented from being damaged due to impact.

An active material particle according to one aspect of the present invention is a granular material in which a particle containing a lithium transition metal compound having a polyanion structure is coated with a carbon material, and has an amount of change in particle size of 1.1 nm or less when pressurized from 20 mN to 100 mN.

The invention relates to the technical field of extruders, and provides a wire and cable processing extruder which comprises a rack. The charging barrel is arranged on the rack and is provided with a feeding hole and a discharging hole, and the charging barrel is provided with a heating section; the screw rod is rotationally arranged in the charging barrel; the extrusion cylinder eccentrically sleeves the screw rod and is positioned in the heating section, and an extrusion space is formed between the outer wall of the extrusion cylinder and the inner wall of the charging barrel; the extrusion convex ring is arranged on the inner wall of the charging barrel and is positioned in the extrusion space; and a discharging gap for molten materials to pass through is formed between the extrusion convex ring and the extrusion cylinder, and when the extrusion cylinder rotates eccentrically, the extrusion convex ring can be matched with the extrusion cylinder to grind unmolten particle materials. By means of the technical scheme, the technical problems that in an extruder in the prior art, due to the fact that materials cannot make full contact with the heating section, the material melting efficiency is low, part of the materials cannot be completely melted possibly, and the cable product coating quality is affected are solved.

The invention relates to a method for continuously determining the particle size distribution of solid particles of different particle sizes that are transported in a delivery direction into a delivery flow and in the process collide with an impact element in the form of a waveguide and produce acoustic signals that propagate as structure-borne sound waves in the impact element and are captured using a vibration sensor. The invention also relates to a measuring device for carrying out the method. In order to achieve more accurate results when determining the particle size distribution taking into account a variable flow energy of the delivery flow, it is proposed to reduce the pressure resistance component of the flow resistance of an impact part of the impact element in an inflow direction.

Implementations disclosed herein are directed to a curved spreader disk for spreading a granular material. In some implementations, the curved spreader disc may include: a concave curved disk with a plurality of fins radiating outward from a center of the curved disk. Each of the fins may includes a substantially straight inner area near to the center of the curved disk for catching granular material and a curved outer area to accelerate movement of the granular material. The substantially straight inner area may transition the granular material from a vertical movement to a horizontal movement.

The invention discloses a granular material micromechanics test platform and method based on an optical measurement technology, the test platform is provided with a polarized light source, a polarizer, a biaxial loading device, an LED light source, an analyzer and an image acquisition system from left to right in sequence, and the optical platform is also provided with a control system. And the control system is electrically connected with the biaxial loading device. The granular material micromechanics test platform is based on an optical measurement technology, shearing of a two-dimensional dense particle system is achieved through movement of the adjustable biaxial loading device, switching between a polarized light field and an unpolarized light field can be achieved by rotating the polarization analyzer, so that test images under different light fields are obtained, and the test precision is improved. A photoelastic technology and a digital image related technology are combined to carry out contact force and dynamics analysis; according to the granular material micromechanics test platform, contact force and dynamic information of the granular material can be visually and synchronously obtained through a high-precision and high-acquisition-frequency image acquisition technology without contact.

The invention provides a landslide monitoring device and method based on acoustic emission characteristics of granular materials, and relates to the field of geological disaster prevention and control, the landslide monitoring device comprises a waveguide rod, an acoustic emission monitoring unit and an analysis unit, a geological drill hole is divided into at least two hole sections from bottom to top, and each hole section is filled with the granular materials; the diameters and / or materials of the granular materials in different hole sections are different; the acoustic emission monitoring unit can monitor acoustic emission information of the granular material in each hole section, and the acoustic emission information comprises a plurality of acoustic emission characteristic parameters; the acoustic emission information of the granular materials in different hole sections at the same sliding speed is different; the analysis unit is in signal connection with the acoustic emission monitoring unit; and the analysis unit can judge whether landslide deformation is generated or not according to the acoustic emission information, and obtain the type of the granular material in the hole section where the landslide deformation is generated and / or the depth of the slip surface. According to the invention, low-cost and continuous monitoring of deep displacement can be realized, and meanwhile, the depth of a slip plane when a landslide occurs can be judged.