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206 results about "Stone particle" patented technology

Ore sorting device

The invention relates to the technical field of ore separation, and provides an ore separation device which comprises a screen box, a screen mesh, a material distribution groove body, a rotating shaft and a material distribution auger, the screen mesh is movably arranged relative to the screen box, the material distribution groove body is arranged on the screen box and located above the top end of the screen mesh, a discharging hole is formed in the bottom of the material distribution groove body, and the rotating shaft is rotationally arranged in the material distribution groove body; the material distribution auger is arranged on the rotating shaft, is divided into two sections, has opposite rotating directions and is used for pushing materials in the middle of the material distribution groove body to the two sides. By means of the technical scheme, the problem that in the prior art, ore particles located in the front end area of the vibrating screen cannot be evenly spread in the transverse direction in time is solved.
Owner:CHENGDESHUANGLUANJIANLONG MINING IND CO LTD

Image segmentation algorithm-based rockfill material grading detection method and device

The invention belongs to the field of rockfill material grading detection, and relates to a rockfill material grading detection method and device based on an image segmentation algorithm, and the method comprises the steps: 1) obtaining an image after paving of stone particles; 2) preprocessing the stone image; 3) inputting the preprocessed image into an instance segmentation model to obtain mask information of stone particles; 4) extracting mask quantitative indexes and shape characteristic parameters in the mask information of the stone particles, and performing particle size and stone total volume conversion in each particle size range on the mask quantitative indexes and the shape characteristic parameters; (5) converting the obtained stone particle size and volume into three-dimensional stone particle gradation, and drawing a stone particle apparent gradation curve; 6, the obtained stone particle apparent grading curve is corrected through the data fusion model.The final stone particle three-dimensional overall grading curve is obtained.The method has the advantages of being high in adaptability, free of a special detection environment and high in detection precision.
Owner:HUBEI UNIV OF TECH

Screening device for premixed mortar production

The invention provides a screening device for premixed mortar production, and belongs to the technical field of premixed mortar production, the screening device comprises a rack and a screening barrel arranged above the rack, and the rack is provided with a driving part used for driving the screening barrel to rotate; the screening barrel is composed of a barrel-shaped frame and a plurality of arc-shaped screening plates, the barrel-shaped frame is rotationally connected to the rack, the arc-shaped screening plates are slidably connected to openings correspondingly formed in the barrel-shaped frame in the radial direction through first springs, and the first springs can make the arc-shaped screening plates tend to approach the center axis of the barrel-shaped frame; convex pins are arranged on the arc-shaped sieve plates, a supporting truss is arranged on the rack, guide grooves allowing the convex pins to slide in are formed in the supporting truss, and knocking pieces used for knocking the arc-shaped sieve plates are arranged on the supporting truss; the possibility that gravel particles rapidly pass through the screening barrel and are crushed due to knocking vibration can be reduced, and the final quality of gravel screening work can be improved.
Owner:TAIYUAN JINYUAN FAR EAST CEMENT COMPONENT CO LTD

Soil sampling device for building construction

The invention belongs to the technical field of soil sampling, and particularly relates to a soil sampling device for building construction, which comprises a pedestal, two lifting frames are arranged on the end surface of the pedestal, a moving plate is slidably arranged between the two lifting frames, a mounting shell is arranged on the end surface of the moving plate, and a sampling lifting assembly is arranged on the end surface of the mounting shell. The sampling lifting assembly is connected with a sampling rod, an outer barrel is rotationally arranged on the portion, on the bottom end face of the moving plate, of the outer portion of the sampling rod, and a drill bit is arranged at one end of the outer barrel. Large stone particles are prevented from influencing acquisition of soil information; by arranging the sampling rod and the sampling barrel, repeated drilling can be prevented, performance consumption is reduced, meanwhile, the drilling straightness can be improved, repeated sampling is avoided, and then the accuracy of soil collection information is improved.
Owner:浙江顺泰工程建设有限公司 +1

Synthetic method of octahedral diamond

The invention discloses an octahedral diamond synthesis method which comprises the following steps: preparing raw materials: selecting high-purity graphite powder and a powder catalyst, adding AlCl3 and KBH4 into the graphite powder to obtain graphite mixed powder, mixing the graphite mixed powder and the powder catalyst according to a weight ratio of (2-5): (5-8) to obtain mixed powder, adding a dispersing agent into the mixed powder, and uniformly mixing to obtain the raw materials, wherein the ratio of the dispersing agent to the mixed powder is 0.5: 6; the raw materials are put into a granulator to be granulated, and raw stone particles within 100 meshes are obtained; adding the raw stone particles into a mold, and pressing by adopting a four-column press to obtain a graphite core column; according to the method, in the diamond synthesis stage, the method of pressure subsection slow rising and power subsection slow rising is adopted, a good environment is provided for production of the octahedral diamond, the quality of the octahedral diamond is improved, the crystal form consistency is high, meanwhile, a high-position repeated mode is adopted in the pressure stage, and the performance of the diamond is improved.
Owner:山东昌润钻石股份有限公司

Tomaline pretreatment and polyurethane sponge integrated production process

PendingCN120923852APolymer sciencePtru catalyst
The invention provides a tourmaline pretreatment and polyurethane sponge integrated production process. The process comprises the following steps: firstly, cleaning and drying tourmaline particles, and ball-milling and crushing the tourmaline particles to 1-10 microns; carrying out surface modification on the powder by adopting a silane coupling agent ethanol solution; mixing and dispersing the modified powder and polyol, adding isocyanate, a foaming agent and a catalyst, and uniformly stirring; the mixture is injected into a mold for foaming, and finally curing and post-treatment are performed to obtain the tourmaline polyurethane sponge. The particle size of the tourmaline is successfully reduced to a micron level through a crushing process and a grinding aid, the particles under the scale can effectively exert the health function of the tourmaline, roughness and discomfort caused by direct use of original particles are thoroughly eliminated, meanwhile, the surface is modified, the particles are perfectly embedded in a sponge base body, and the service life of the tourmaline is prolonged. The final product is very soft and flat in touch, and the unevenness and friction feeling existing in the traditional product mixed with large particles are completely avoided.
Owner:SHANTOU JIYUANHUA WEAVING IND CO LTD

Desert sand graded cleaning and sewage treatment system

The invention relates to a desert sand grading cleaning and sewage treatment system which comprises a frame base, a support and three grading cleaning tanks are installed at the top of the frame base, a material guiding inclined plate is installed at the top of each grading cleaning tank, a vibration screening machine frame is installed at the top of the support, and the vibration screening machine frame is designed to conduct vibration screening in the vertical direction. By designing the vibration screening machine frame, related assemblies of the vibration screening machine frame and the sand crushing assembly, during working, the three material guiding inclined plates can receive sand and stone particles of different sizes and grades, and finally the sand and stone particles are conveyed into the three grading cleaning tanks to complete grading cleaning; when the vibrating screening machine frame moves up and down, half teeth drive a rotating rod to rotate back and forth, so that a beating and crushing plate periodically beats the gravel, the caked gravel is beaten and crushed, and then the caked gravel enters three cleaning tanks to be cleaned after being beaten and crushed; the defect that in the prior art, grading and fragmenting operation cannot be completed in the cleaning process is effectively overcome.
Owner:LANZHOU JIAOTONG UNIV

Ultrasonic vibration crushing and screening integrated device for rock particles

The invention provides an ultrasonic vibration crushing and screening integrated device for rock particles, and relates to crushing and screening equipment. The ultrasonic crusher comprises a first ultrasonic transducer, a crushing head and a material cup, the material cup comprises an outer cup and an inner cup, and the two opposite sides of the outer wall of the outer cup are each provided with an upper sliding rod and a lower sliding rod; an ultrasonic screening machine; the turnover mechanism comprises two turnover assemblies, each turnover assembly comprises a lifting block and a guide rail plate, each lifting block is movably connected with an upper sliding rod, a sliding groove is formed in each guide rail plate, and each sliding groove is provided with a V-shaped lateral deviation groove and a guide block; and the driving mechanism enables the two lifting blocks to descend to drive the material cup to descend, and when the lower sliding rod slides to the lateral deviation groove, the upper sliding rod continues to slide along the sliding groove to drive the material cup to turn over, so that crushed rock particles are poured into the screen. The device has the beneficial effects that seamless connection of fine crushing and screening of rock particles is achieved, and the device has the remarkable advantages of being high in product fineness, efficient and low in consumption.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN) +1

An anti-seismic simulation test device and test method for a tunnel

The present invention belongs to the technical field of tunnel seismic testing, and specifically relates to a tunnel seismic simulation testing device and a testing method. The tunnel seismic simulation testing device includes a base, on the top of which an electromagnetic vibration table is fixedly installed, and connecting plates are connected to both sides of the top of the electromagnetic vibration table; lifting components are installed at the four corners of the top of the electromagnetic vibration table, and a pressing component is arranged among the four lifting components; the pressing component includes a frame body and a nylon cloth bag, and the nylon cloth bag is fixed to the bottom of the frame body. Through the lifting components, the present invention can drive the pressing component to descend, so that the bottom of the nylon cloth bag can wrap around the surface of the tunnel model, and then crushed stone particles are filled into the cloth bag, thereby using the crushed stones evenly distributed along the outer wall of the tunnel model in the cloth bag to press the tunnel, which is beneficial to improving the uniformity of the pressure on the tunnel surface during the vibration test, and further beneficial to improving the accuracy of the test.
Owner:SOUTHWEST JIAOTONG UNIV

Sandstone recovery system for sewage pool of concrete mixing plant

The utility model discloses a gravel recovery system for a sewage pool of a concrete mixing plant, which is characterized in that the tail part of a gravel separator is provided with a blanking striker plate, the blanking striker plate is vertically welded on a shell of the gravel separator, the gravel separator is also welded with a reinforcing steel bar protective net, a spraying pipeline is erected on the reinforcing steel bar protective net, and the spraying pipeline is communicated with the discharging striker plate. The spraying pipeline is erected in the length direction of the sand-gravel separator, and spraying openings corresponding to all levels of propeller blades of the sand-gravel separator are formed in the bottom of the spraying pipeline. Compared with the prior art, the discharging baffle plate is welded on the existing sand-gravel separator to prevent stone particles from splashing in the discharging process, the steel bar protective net is welded on the sand-gravel separator to prevent large particles from falling off from the upper feeding conveying belt, and the spraying pipeline is erected for spraying and cleaning. The sand-gravel separator has the advantages that sand and gravel can be prevented from being solidified in the sand-gravel separator, sewage in the sewage pool can be recycled by the aid of the drainage pit and the sewage return ditch, and water cost is reduced.
Owner:NANCHONG XUYU BUILDING MATERIALS CO LTD

CMP pad dresser with flattening tip Small ingot automatic precision drilling equipment

The invention discloses an automatic precision drilling device for small ingots of a CMP polishing pad dresser with a flattened tip, comprising a frame, a drilling mechanism, a material moving mechanism and a tray; a tray positioning platform for placing the tray is provided on the table top of the frame; the drilling mechanism and the material moving mechanism are arranged on the table top; the tray is provided with accommodating grooves for placing the small ingots in an array form; when in use, the tray loaded with pre-treated small ingots is placed on the tray positioning platform, and the drilling mechanism performs automatic drilling operation on the small ingots, which greatly improves the drilling efficiency and provides favorable conditions for the commercialization of CMP polishing pad dresser products; and the drilling mechanism adopts a specific structure, after the drilling is completed, the diamond particles on the surface of the small ingot are evenly arranged in a single layer, and the tip height of the diamond particles has the advantage of good consistency, so that the CMP polishing pad dresser has a strong dressing ability and is not easy to cause damage to the CMP polishing pad.
Owner:ZHEJIANG ZHONGZUAN NEW MATERIAL TECH CO LTD

Water conservancy construction cofferdam device

ActiveCN224468416UFenderStone particle
The utility model relates to cofferdam device technical field, especially water conservancy construction cofferdam device, including bottom board, the bottom board is hollow annular structure, the top of bottom board is fixed with peripheral fender and inner fender respectively by welding, the peripheral fender is surrounded in the outside of inner fender, fill several inner lining rods between the peripheral fender and inner fender, the surface of inner lining rod is fixed with the inner wall surface of peripheral fender and the surface of inner fender respectively by welding, the inner lining rod is arranged along the equidistance distribution of inner ring wall annular of peripheral fender, still inlaying the reinforcing ring that has been penetrated between several inner lining rods. The scheme will fill the inner lining rod and be fixed with the peripheral fender and inner fender by welding, form the compact combination type structure, this design not only effectively disperses the impact force of water flow, still can fill the sandstone particle through the gap between the inner and outer fender, greatly increase overall weight and compactness, the filling of sandstone not only strengthens the deformation resistance of cofferdam, makes its installation on riverbed more stable.
Owner:HEILONGJIANG PROVINCIAL HYDRAULIC RES INST +1

A soil sampling and pretreatment device for landscape design

This invention discloses a soil sampling pretreatment device for landscape design, belonging to the field of soil pretreatment technology. It includes a treatment box containing processing components. In this invention, a flexible material crushing whip achieves efficient preliminary crushing of large soil samples while avoiding damage to hard stones, preventing the inclusion of crushed hard stones in the sample and affecting its overall purity. Simultaneously, the auger's rotation and revolution work together to transport the ground sample to the outer periphery, allowing qualified soil particles to enter the centralized hopper through a connecting pipe, while stone particles are effectively separated, improving the purity of the processed sample. A linkage gear, via a rotating shaft and connecting rod, drives a counterweight to rotate eccentrically. This assists the grinding roller in improving the grinding effect on the soil sample, and the vibration of the grinding roller prevents soil samples from adhering to its outer surface, avoiding residue.
Owner:SICHUAN HELONGYAO CONSTR ENG CO LTD

Rock mass compressive strength testing device

The present application relates to the technical field of geological exploration, and discloses a rock mass compressive strength testing device, which comprises a rack, a working chamber is formed in the rack, a hydraulic cylinder is installed on the top of the rack, the output end of the hydraulic cylinder is located in the working chamber, and a pressing head is installed on the output end of the hydraulic cylinder; a placing table is installed on the bottom of the rack and used for placing a sample; and an automatic placing assembly is installed on the placing table and used for automatically moving the sample to the center of the top surface of the placing table. The present application can automatically adjust the position of the sample, quickly place the sample on the detection position on the placing table, and is safe and reliable to use, and the present application can conveniently clean the surface of the placing table, avoid the surface of the placing table from being covered with rock particles, and is more convenient to use.
Owner:HOHAI UNIV

Recycled concrete preparation and processing device and preparation method thereof

The invention discloses a recycled concrete preparing and processing device which comprises a screening box, a feeding port formed in the top of the screening box, a discharging port formed in the bottom of the screening box and an opening and closing door arranged on the rear side wall of the screening box. The crushing assembly is arranged in the middle section of the screening box; the filtering and adjusting assembly is obliquely arranged between the crushing assembly and the discharging opening and is used for filtering powder-cut stone particles of different specifications; the lifting assembly is arranged on the outer side wall of the screening box and is used for repeatedly crushing the stone particles; the filtering adjusting assembly comprises a second net plate fixedly arranged on the inner side wall of the screening box, a first installation part movably arranged at the top of the second net plate, a plurality of second net holes formed in the second net plate and first net holes formed in the first net plate and used in cooperation with the second net holes, and a transmission assembly used for driving the first net plate to rotate is arranged at the bottom of the second net plate.
Owner:TONGXIANG YADOU CONCRETE CO LTD

Artificial quartz stone particle scattering device

The utility model relates to the technical field of scattering devices, and discloses an artificial quartz stone particle scattering device which comprises a scattering box, a round roller is rotationally connected in the scattering box, fixing rings are fixedly connected to the two ends in the scattering box, the two ends of the round roller are rotationally arranged in the two fixing rings in a sleeved mode respectively, and a rotating mechanism for rotating the round roller is arranged in the scattering box. A stirring mechanism is arranged in the round roller, a feeding port is formed in one end of the surface of the scattering box, a hopper is fixedly connected to one end of the surface of the scattering box and arranged on the surface of the feeding port, and a base is fixedly connected to the bottom of the scattering box. According to the quartz stone screening device, quartz stone particles can be screened through the arrangement of the round rollers, meanwhile, quartz stone can be scattered in cooperation with rotation of the multiple stirring rods, the scattered quartz stone is screened, meanwhile, particles of different sizes can be screened when used, and then the using effect of the device is improved.
Owner:SHANDONG QUANYI BUILDING MATERIALS CO LTD

Ore sorting equipment and ore identification method based on dual-energy XRT transmission technology

The invention provides ore sorting equipment based on a dual-energy XRT transmission technology and an ore recognition method, and relates to the field of ore dressing. The ore sorting equipment is mainly composed of a material box, a rubber sliding groove, a feeding roller, an imaging unit, a waste rock recognition system and a blocking and sorting system, the core of the ore sorting equipment is that multiple transmission images at different angles can be obtained through rolling of ore particles in the rubber sliding groove, and then the distribution situation of minerals in the ore particles is accurately obtained through image analysis. According to the ore recognition method, the ratio of the volume of a target mineral or associated minerals thereof to the volume of the ore particles is solved by analyzing transmission images of the ore particles at different rolling angles, and if the volume ratio is larger than a sorting threshold value, it is judged that the ore particles are concentrate ore; if the volume ratio is larger than a sorting threshold value, it is judged that the ore particles are waste rocks. The ore identification method with the volume ratio as the sorting threshold value can truly reflect the ore content of the ore, and the ore grade misestimation cannot be caused.
Owner:HENAN FOUND MINING CO LTD

Strength detection device for stone processing

The utility model provides a strength detection device for stone processing, which relates to the technical field of detection devices and comprises a main body mechanism, a detection mechanism is fixedly mounted at the top of the main body mechanism, and the main body mechanism comprises a group of electric telescopic rods. According to the device, under the cooperation of the main body mechanism and the detection mechanism, after detection is finished, an operator can press down a clamping block, at the moment, the workbench starts to rotate under the driving of a rotating shaft, broken stone particles on the surface of the workbench slide into a collection cabinet below, and the device can rapidly remove the broken stone particles on the working surface; according to the stone detection device, the shutdown cleaning time of the detection device is remarkably shortened, the stone detection efficiency is improved, meanwhile, the whole workbench is inclined, more broken stone particles can be effectively prevented from remaining in the device, abrasion and damage to equipment parts are reduced, the service life of the device is prolonged, the broken stone particles can be prevented from influencing the test result, and the test accuracy is improved.
Owner:YICHANG JIUCHOU STONE IND CO LTD

Efficient specific gravity impurity removal and stone suction device

The utility model relates to the technical field of rice impurity removal, in particular to an efficient specific gravity impurity removal and stone suction device which comprises a box body, a vibrating screen, a feeding mechanism, a dust removal mechanism and a collecting mechanism are arranged on the box body, the vibrating screen is located in the box body and arranged in an inclined mode, a vibrating mechanism is arranged between the vibrating screen and the box body, and the dust removal mechanism is located in the box body. The collecting mechanism comprises a sealing groove, a toothed plate, a telescopic mechanism, a residue collecting box and a collecting box, and the sealing groove is formed in the top end of the box body. According to the structure, through inclined arrangement of the vibrating screen and the action of the vibrating mechanism, heavy stone particles rapidly sink into the residue collecting box by utilizing the specific gravity difference between rice and the stone particles; and light rice is adsorbed into the collecting box by the induced draft fan, effective separation of impurities and rice is ensured, the separating effect is optimized by adjusting the position of the collecting box to be close to the vibrating screen for different types of rice with different weights, and high-precision separation of various types of rice is ensured.
Owner:TIANJIN FENGYING RICE IND CO LTD

Application of composite material with humidity responsiveness in ion erosion resistance

The invention relates to an application of a composite material with humidity responsiveness in ion erosion resistance, in particular to an application of the composite material with humidity responsiveness, which is prepared from modified nano zeolite particles carried by polysiloxane, in sulfate erosion resistance and chloride ion erosion resistance of concrete. The used composite material with humidity response has a unique humidity response mechanism, after the composite material absorbs moisture and swells, the modified nano zeolite particles encapsulated in the composite material can be gradually released outwards, and when the concrete is exposed to a humid corrosive environment, the modified nano zeolite particles can release the humidity response of the concrete. And sulfate ions and chloride ions in an erosion environment can be adsorbed and fixed, and further destructive effects of erosion ions, especially destructive effects of concrete, can be hindered. The method can be used for concrete structures exposed in severe environments, such as ocean engineering, underground facilities and industrial buildings, and has a wide application prospect.
Owner:LANDUN (YUNNAN) ENG TECH CO LTD +1

Anti-cracking structure of painted pottery stone concrete terrace

The utility model discloses a colored pottery stone concrete terrace anti-cracking structure, and belongs to the field of concrete terrace anti-cracking, the colored pottery stone concrete terrace anti-cracking structure comprises a base layer, the top of the base layer is fixedly connected with an adhesion layer, the top of the adhesion layer is fixedly connected with a damp-proof layer, and the top of the damp-proof layer is fixedly connected with a heat preservation layer; the painted pottery stone concrete layer and the steel wire mesh layer are arranged, hollowing in the painted pottery stone concrete layer is reduced through the steel wire mesh layer, painted pottery stones in the painted pottery stone concrete layer replace part of gravel particles, the overall specific gravity can be effectively reduced, and the painted pottery stone concrete layer is endowed with the characteristic of rich color changes; a proper amount of anti-cracking steel fibers are introduced into the colored pottery stone concrete layer, and then the anti-cracking steel fibers are embedded into the plastomer to play a bridging effect, so that the tensile stress resistance is greatly improved, the local fracture instability phenomenon is reduced, the problem that a traditional concrete terrace is prone to cracking generally is solved, and practicability is improved.
Owner:SHANGHAI JIASHU CONSTR ENG CO LTD

Modeling method of ballast track structure discrete element calculation model under dynamic load effect

The invention discloses a modeling method for a discrete element calculation model of a ballast track structure under the action of a dynamic load, and relates to the technical field of numerical simulation. Comprising the following steps that firstly, geometric parameters of a ballast track and physical and mechanical characteristics of ballast stone particles are collected, and a finite element analysis model is established; and train load and frequency parameters are set, and displacement variables of the ballast particles are analyzed. Then, physical parameters of the dirty particles are obtained, the shape coefficient of the dirty particles and the ballast particles is calculated, and then the effective contact area is obtained; and according to the effective contact area and the environmental parameters, the bond strength is calculated and corrected. And finally, constructing a discrete element calculation model based on the bond strength, dividing the discrete element calculation model into a plurality of grid units, and mapping the bond strength by utilizing visual software to complete the construction of the whole model, thereby effectively integrating the physical and mechanical properties of the particulate matters and environmental influence factors, and obviously improving the analysis precision and reliability of the track structure.
Owner:SHIJIAZHUANG TIEDAO UNIV

Iron-making raw material conveying device

The invention relates to the technical field of conveying devices, and particularly discloses an ironmaking raw material conveying device which comprises a conveying table, a conveying belt, a screening mechanism and a quantitative subpackaging mechanism, conveying rollers are arranged on the conveying table, the tail end of the conveying belt is located above the conveying table, the conveying belt is used for transferring materials to the conveying table, and a plurality of partition plates are arranged on the conveying table; the multiple partition plates form multiple channels on the conveying table, the screening mechanism is used for feeding materials into the different channels according to the sizes, the quantitative subpackaging mechanism comprises a mounting base and a transfer assembly, the mounting base is arranged on the conveying table, and the multiple partition plates extend to the mounting base, so that the multiple channels extend to the mounting base; a transfer assembly is arranged at the tail end of each channel; according to the iron-making raw material conveying device, ore particles are screened according to different particle sizes, then the number of needed ores with different sizes is calculated according to the volume of the container, and the required number of ores are transferred into the container through the transfer assembly.
Owner:WUXI DONGXONG HEAVY ARC-FURNACE CO LTD

Novel composite material and shortcut construction device

The invention relates to the technical field of waste utilization, and particularly discloses a novel composite material and a shortcut construction device.The novel composite material comprises soil particles and gravel particles; the volume ratio of a single soil particle to a single gravel particle is (2-3): 1; the mass ratio of the soil particles to the gravel particles is (1-1.5): 1. According to the novel composite material and the shortcut construction device, waste soil resources can be used for building a temporary shortcut in a large engineering project, utilization of waste soil is effectively improved, use of concrete is reduced, the engineering cost is reduced, and the construction efficiency is improved.
Owner:SICHUAN COMM CONSTR MEIZHOU CONSTR CO LTD

Crushing equipment capable of selectively beating according to density

The invention discloses crushing equipment capable of selectively beating according to density. The crushing equipment comprises a box body, a feeding device, a motor A, an air blower, a crushing device, a material distribution chute, a motor B and a crushing hammer body, the feeding device is installed at an inlet of the box body, the motor A drives the air blower to provide a uniform wind field in the box body, particles with different densities are sorted according to the density under the action of wind power, and different materials are crushed by the crushing device installed below the material distribution chutes at different intensities after entering the corresponding material distribution chutes. Different dissociation strengths are selectively adopted for ore particles with different densities, and batch wide-range accurate crushing dissociation is achieved.
Owner:HENAN POLYTECHNIC UNIV

Quartz stone raw material mixing device

The utility model discloses a quartz stone raw material mixing device which comprises a multidirectional mixing mechanism, and an auxiliary material mixing mechanism is arranged on the top surface of the multidirectional mixing mechanism; the multidirectional mixing mechanism comprises a base, a vertical plate fixedly connected to the left side of the top of the base and a supporting rod fixedly connected to the right side of the top of the base, a bearing is fixed to the top end of the vertical plate, and a tank is fixed in an inner ring of the bearing. According to the utility model, two groups of auxiliary material mixing mechanisms are arranged, one group of auxiliary material mixing mechanisms can realize independent mixing treatment of quartz stone particles and auxiliary material particles, the other group of auxiliary material mixing mechanisms can realize independent mixing treatment of raw materials such as resin, toner and the like, and the multi-directional material mixing mechanism is arranged below the two groups of auxiliary material mixing mechanisms, so that the material mixing efficiency is improved. According to the mixing tank, different mixed raw materials enter the tank body to be mixed, meanwhile, the tank body rotates anticlockwise, and the stirring paddle in the tank body rotates clockwise, so that the raw materials in the tank body can be fully mixed.
Owner:FENGYANG QINGGONG MINING CO LTD

Method and system for simulating buckling catastrophe large deformation of barrier dam under extreme working condition

The invention provides a dam instability catastrophe large deformation simulation method and system under extreme working conditions. The method comprises the steps that 1, a solid model is constructed and dispersed into an equidistant particle model; respectively endowing each particle with a basic parameter value and setting a particle type; 2, constructing a general constitutive model for representing the fluidization phase change behavior of the soil body; 3, particle contact judgment is carried out with barrage dam soil particles, barrage dam block stone particles, vehicle particles and rolling stone particles as center particles, and the deformation behaviors of the center particles are simulated based on the constructed general constitutive model representing the fluidization phase change behaviors of the soil body; and step 4, carrying out visual output on the calculated characteristic information of each central particle. According to the method, the refined numerical simulation method for the instability catastrophe large deformation of the barrier dam considering the combined action of the landslide disaster chain impact, the vehicle load and the rolling stone impact is established, and the stability of the barrier dam and the whole subsequent large deformation damage process under the extreme working condition can be predicted.
Owner:WUHAN UNIV

Mine water inrush and sand inrush disaster early warning method and system based on tracing monitoring

The invention discloses a mine water inrush and sand inrush disaster early warning method and system based on tracing monitoring. The method comprises the steps that firstly, multi-source heterogeneous monitoring data in a mine potential hazard source area and an associated mine channel are collected in real time; 2, performing noise reduction and standardization processing on the multi-source heterogeneous monitoring data to generate a standardized feature data set; 3, inputting the standardized characteristic data set into a water inrush and sand inrush early warning model, and outputting a water inrush and sand inrush occurrence probability and disaster scale prediction result; fourthly, when the disaster scale prediction result or the water inrush and sand inrush occurrence probability reaches an early warning threshold value, early warning information is generated and sent; the system comprises a data acquisition module, a data transmission module and a data processing and early warning module, wherein the data acquisition module comprises an intelligent rock particle assembly, a multi-sensor integration module, a while-drilling test unit and a time domain reflection monitoring unit. Therefore, according to the design, early warning of mine water inrush and sand inrush disasters can be achieved.
Owner:HUBEI EARTHQUAKE ADMINISTRATION (SEISMOLOGY RES INST OF CHINA EARTHQUAKE ADMINISTRATION)

High-leveling-property dry powder batch-scraping stone-like paint and preparation method thereof

The invention discloses a high-leveling-property dry powder batch-scraping stone-like paint and a preparation method, and belongs to the field of building paints.The stone-like paint is prepared from a high-molecular polymer film-forming component and a stone-like particle component, and the mass ratio of the high-molecular polymer film-forming component to the stone-like particle component is 1: (3-5); according to the present invention, the high-molecular polymer film forming component and the stone-like particle component are uniformly mixed and stirred to obtain the dry powder batch-scraped stone-like paint, the dry powder batch-scraped stone-like paint has characteristics of light self-weight, construction process simplification, simple maintenance and high weather resistance, the batch-scraped drying time of the dry powder batch-scraped stone-like paint is less than 3 h, the bonding strength is 0.2 / MPa after at least five freezing and thawing cycles, and the dry powder batch-scraped stone-like paint has characteristics of good adhesion and good weather resistance. The artificial weathering aging resistance detection result is that the coating does not crack, bulge or peel off within 600h, the pulverization level is 0, the discoloration level is less than or equal to 1, the diameter is 50mm, no crack exists, and the flexibility is good; after the dry powder batch-scraped stone-like paint is scraped into a film, the paint film is smooth, is not easy to be contaminated by dust and is easy to clean; high compactness is achieved, and the ideal leveling effect can be achieved without multiple times of batch scraping or polishing.
Owner:YUNNAN CONSTR INVESTMENT POLYMER MATERIALS CO LTD

Filling device for gravelly soil special roadbed of forest wetland in cold region

The utility model discloses a cold region forest wetland gravelly soil special roadbed filling device, and belongs to the field of wetland roadbed filling. A discharge hole I communicated with the gap is formed in the side wall of the cylinder body; a plurality of groups of centrosymmetric conical holes are formed in the fixed plate, and a plurality of groups of centrosymmetric round holes are formed in the rotating plate; the lower end of the fixing plate is fixedly connected with a connecting device, and the upper end of the connecting device communicates with the corresponding conical hole. A through hole is formed in the partition plate; a motor is fixedly connected to the inner bottom surface of the shell; the rotating shaft penetrates through the barrel, the rotating plate and the fixed plate and then is connected to the lower end of the partition plate through a bearing; the rotating shaft is in key connection with the rotating plate and is connected with the fixed plate through a bearing; a stirring rod is fixedly connected to the outer circle face of the rotating shaft and located at the upper end of the fixing plate. The utility model not only can effectively screen slender particles and reduce the proportion of the slender particles in broken stones, but also can screen broken stone particles with smaller particle sizes so as to improve the drainage performance of the filler and reduce the problem of roadbed softening caused by excessive moisture.
Owner:HEILONGJIANG LONGJIAN ROAD & BRIDGE OF THIRD BRANCH