308 results about "Granular material" patented technology

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 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 discloses a dynamic real-time measurement method and device for the friction coefficient in a rotary shear type granular material, and belongs to the technical field of granular material measurement. The dynamic real-time measurement device for the friction coefficient in the rotary shear type granular material comprises a rotary shear rheological experiment cavity which is connected to a bottom plate through a mounting bracket; the filler is filled with a to-be-detected granular material; the normal load monitoring unit comprises an upper pressure sensor and a lower pressure sensor which are located on the upper portion and the lower portion of the rotary shear rheological experiment cavity, in-situ real-time measurement of the internal friction coefficient of the granular material in the shear flowing process is achieved, and the technical problem that the internal friction characteristic of the granular material is difficult to measure through a traditional method is solved. A cooperative working mechanism of an axial constraint type dynamic loading platform, an annular medium distribution structure and a rotary shear rheological experiment cavity is innovatively designed, shear flow in the granular material is achieved, and the internal friction coefficient of the granular material is measured.

A granular material conveyance apparatus [100] comprises a discharge conduit [102] comprising a proximal end [102a] configured to receive granular material from a granular material source and a distal end [102b] separated from the proximal end [102a] along a longitudinal direction of the conduit [102]. The discharge conduit [102] is movable with respect to the granular material source. An end effector [110] is engaged externally with respect to the discharge conduit [102] so as to be translatable along the longitudinal direction of the discharge conduit [102]. The discharge conduit [102] further comprises a conveyor [106] configured to move the granular material along a conveyance path [108] disposed within the discharge conduit [102] from the proximal end [102a] towards the distal end [102b] of the discharge conduit [102]. The end effector [110] has an inlet [112] in communication with the conveyance path [108] at least at a plurality of positions of the end effector [110] with respect to the discharge conduit [102] to allow the granular material to be conveyed from the discharge conduit [102] and into the end effector [110]. Also disclosed is a method and apparatus for transferring granular material between a filling module [202] and a receiving module [204].

1. Name of the product in this design: Servo Electronic Counting Machine (BPS-D8). 2. Application of this design: This design is a servo electronic particle counter used for counting granular materials. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application provides a granular material impurity removing system, which comprises a box, a dust suction device and a blowing device; the box is internally provided with a discharging disc, a material guiding ring and a collecting hopper, and the top of the box is provided with a feeding hopper; the lower side of the discharging disc is provided with a dust collecting cavity, the top end of the discharging disc is provided with a material distributing part, and the discharging disc is provided with a plurality of raised parts and a discharging groove; the large end of the material guiding ring faces upwards, and the small end faces downwards; the upper end of the collecting hopper is open, the diameter of the upper end is larger than that of the lower end, a material blocking part is arranged at the discharging port of the lower end; the outer edge of the collecting hopper is provided with an air passing channel, a reaction cavity is formed between the material guiding ring and the collecting hopper, a return air cavity is formed between the material guiding ring and the inner wall of the box, and a turbulence cavity is formed between the collecting hopper and the inner wall of the box; the upper side of the discharging disc forms a feeding cavity, and the lower side of the collecting hopper forms a discharging cavity; the dust suction device comprises a suction pipe, and the suction port of the suction pipe is located at the highest point of the material distributing part; and the blowing device comprises inner and outer blowing pipes. The application has compact structure, ingenious design and can effectively remove the fine dust particles mixed in the granular material.

1. Name of the product in this design: Servo Vision Counting Machine (BPS-DS16). 2. Application of this design: This design is a servo vision counting machine used for counting granular materials. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application provides a device and method for testing the heat conduction characteristics of granular materials, and relates to the field of geotechnical engineering, which comprises a probe body, a cylinder, a lower support platform, an upper support platform and a tamping device; the lower support platform and the upper support platform are respectively threadedly connected with the cylinder; a reserved hole column is installed at the top center of the lower support platform; the tamping device comprises a vertical pipe, a pressure plate, a plug and a lower tamping hammer; the outer diameter of the pressure plate is smaller than the inner diameter of the cylinder; a connecting hole with a wide top and a narrow bottom is formed at the center of the pressure plate; the top end of the connecting hole is threadedly connected with the bottom end of the vertical pipe; the plug is a T-shaped column structure, the outer diameter of the horizontal part of the plug is larger than the outer diameter of the reserved hole column and smaller than the inner diameter of the top end of the connecting hole; the outer diameter of the vertical part of the plug, the inner diameter of the bottom end of the connecting hole and the outer diameter of the reserved hole column are the same and are not larger than the inner diameter of the vertical pipe; the lower tamping hammer is sleeved on the vertical pipe; the application can effectively avoid the defects existing in the heat conduction characteristic test of the sample by using the drilling method.

The utility model discloses a particle raw material impurity removal device, which relates to the technical field of biochar production, and comprises a shell, a feed port is arranged at the top end of the shell, a discharge port is arranged at one end of the shell, the discharge port is communicated with an inner cavity of the shell, a material collection box is arranged on one side of the shell, and a discharge port is arranged on the other side of the shell. The material collecting box penetrates to the outer portion of the other side of the shell, and an impurity removing mechanism used for removing impurities of the raw materials is arranged on the shell. According to the impurity removal device, caked materials can be ground and crushed through the impurity removal mechanism, and the crushed materials are sieved and subjected to impurity removal operation, so that the impurity removal efficiency of the materials can be further improved, and the loss of the materials in the impurity removal process is reduced.

1. Name of the designed product: mixing machine. 2. Use of the designed product: for mixing granular materials. 3. Design points of the designed product: in shape. 4. Picture or photo best showing the design points: perspective view.

The invention discloses a strong vibration liquefied foundation dynamic compaction reinforcing device which comprises a loading machine, a fixing frame, a lifting frame, a tamping hammer and a hydraulic lifting rod. The fixing frame is fixedly arranged on one side of the loading machine, and the lifting frame is installed in the fixing frame in a sliding mode. The tamping hammer is arranged at the bottom of the lifting frame; one end of the hydraulic lifting rod is arranged on the fixing frame, and the other end of the hydraulic lifting rod is arranged on the lifting frame; a waste soil recycling mechanism is arranged on the lifting frame, the waste soil recycling mechanism comprises a waste soil collecting unit and a crushing and storing unit, and the waste soil collecting unit is arranged in the lifting frame and used for collecting waste soil and broken stones generated in the tamping process; and the crushing and storing unit is arranged on the outer side of the lifting frame and used for storing and crushing the waste soil and the broken stones collected by the waste soil collecting unit and processing the waste soil and the broken stones into granular materials for foundation reinforcement. The device can collect waste soil and gravel gathered in the tamping process of the tamping hammer, follow-up layered backfilling is conducted, and operation is easy and convenient.

An automatic particle material dispersing and discharging machine comprises a material storage device, a material taking device and a dispersing and discharging device, the material storage device comprises a material storage bin with an opening in the upper portion, and a vibration motor capable of driving the material storage bin to vibrate is installed on the material storage bin; the material taking device is located above the material storage bin and comprises a lifting support, a transmission mechanism, a transmission shaft, a lifting chain and a material digging spoon row set, and material digging spoons are arranged in the material digging spoon row set. The dispersing and discharging device is located behind the material taking device and comprises material blocking grooves, a discharging hopper, material distributing pipes and a discharging plate, the material digging spoons after material taking are driven by the lifting chain to downwards pass through a transmission shaft located at the upper end and then turn over downwards, the materials are conveyed to the material blocking grooves in the turning-over process and then are dispersed into the material distributing pipes to fall down, and directional dispersion of the materials is achieved. According to the invention, particle materials with irregular shapes can be better automatically and directionally dispersed and discharged.

The invention relates to the technical field of material performance testing, in particular to a wear resistance testing device and evaluating method for a granular supporting material and a plugging material.The wear resistance testing device comprises a testing support, a testing platform, a supporting body, a grinding ring, a driving mechanism and a lifting assembly, and the lifting assembly capable of enabling the testing platform to move up and down is arranged on the lower portion of the testing support; a columnar supporting body is installed on the upper side of the testing platform. According to the wear resistance testing device for the granular supporting material and the plugging material, the wear characteristics of the granular material to be tested under the conditions of underground drill rod grinding, liquid impact or crack closing pressure can be tested under experimental conditions; according to the wear resistance testing device for the granular supporting material and the leaking stoppage material, energy equivalent replacement is carried out on shearing wear of underground high-speed fluid erosion and physical contact by utilizing a friction-grinding process between a metal surface and the granular material, and collection and statistics of a material to be tested are realized through a grinding groove; and the accuracy of wear quantification is obviously improved.

The utility model discloses a spiral conveying cooler which comprises a shell, a spiral conveying main shaft arranged in the shell and a spiral blade arranged on the shell and spirally extending in the axial direction of the spiral conveying main shaft, and a cavity extending in the spiral direction is formed in the spiral blade. Four flow channels are arranged in the spiral conveying main shaft and include the first flow channel, the second flow channel, the third flow channel and the fourth flow channel, one end of the first flow channel is communicated with the first cooling water inlet, the other end of the first flow channel is communicated with the fourth flow channel, the fourth flow channel is communicated with the third flow channel through spiral blades, one end of the second flow channel is communicated with the third flow channel, and the other end of the second flow channel is communicated with the fourth flow channel. And the other end of the second flow channel is communicated with the first cooling water outlet. According to the spiral conveying cooler, the four flow channels are formed in the spiral conveying main shaft, the circulation sectional area of the flow channels is reduced, the flow speed of cooling water is increased, the heat exchange effect of the spiral conveying cooler is improved, and the spiral conveying cooler conveys solid particle materials with the medium temperature as high as 800 DEG C.

This invention discloses a multi-mode processing method for friction stir deposition modeling driven by cascaded electric spindles. Based on a cascaded electric spindle-driven friction stir deposition modeling die head, the die head includes a screw shaft, a first electric spindle, and a second electric spindle that drives the screw shaft to rotate; a material conveying assembly including a storage box cover and a storage cavity formed by a specific inlet and a specific first outlet; and a stirring extrusion tool, wherein the first electric spindle includes a first hollow mandrel. This invention employs a compact coaxial cascaded electric spindle design, integrating the force transmission, heat transfer, and material transfer functions of the innovative hollow electric spindle into one unit, exhibiting modular characteristics. This overcomes the current additive manufacturing process where granular materials cannot be processed using a stirring tool in a coaxial friction stir process. Based on a circumferentially distributed multi-material conveying assembly design within the electric spindle assembly, this invention features material openness, enabling friction stir deposition modeling of multiple materials or gradient materials.

The present application relates to the technical field of intelligent warehousing, and particularly relates to a granular material automatic output device, which is characterized in that a sand raking roller device is arranged in front of a spiral material shovel hopper to assist the spiral material shovel hopper in the shovel operation of fine granular material, so as to avoid shovel difficulty and even damage of the spiral driving motor; the discharge hopper is configured as two parts that can rotate relative to each other, the upper part component rotates with the secondary climbing belt conveyor, the lower part component moves along the horizontal belt conveyor, the discharge opening of the discharge hopper is always at the rotation center of the secondary climbing belt conveyor relative to the horizontal belt conveyor, the horizontal belt conveyor receives the falling material at a constant position and with uniform stress, so as to avoid the limitation of movement of the device with walking and shovel functions; the discharge hopper on the horizontal belt conveyor is positioned by a discharge hopper laser positioner, and then the angle measured by a discharge hopper angle encoder and a traction hole angle encoder is used to accurately solve the position of the device with walking and shovel functions.

The invention discloses a process for dealkalizing and deeply reducing red mud through gradient temperature control treatment, which comprises the following steps: 1) accurately metering raw materials and grinding; 2) feeding the ground raw materials into a red mud stirrer, and stirring at a gradient rotating speed; 3) feeding the stirred and mixed raw materials into a granulator for granulation, and pressing the materials into particle materials with the particle size of 5-15mm; 4) feeding the particle material into a dealkalization solid-phase reaction device, and forming a particle material after a solid-phase reaction in a reducing atmosphere; (5) feeding the particle material after the solid-phase reaction into a cooling machine, and slowly cooling in a furnace by adopting a nitrogen direct circulating cooling method; 6) crushing the cooled material by a crusher until the particle size is less than 5mm; 7) performing magnetic separation on the ground powder by a high-gradient magnetic separator.According to the method, efficient dealkalization and iron element reduction separation are realized through high-temperature dealkalization pre-reduction and high-temperature deep reduction melt separation.

The invention discloses a pneumatic conveying method and device for particle materials, a storage medium and a program product, and belongs to the technical field of pneumatic conveying. The invention aims to solve the technical problems of high energy consumption and low efficiency caused by pipe cleaning in the last stage of intermittent pneumatic conveying. The method is applied to a system comprising at least two pump sets and a shared conveying mother pipe, the conveying outlet pressure of the first pump set is monitored, and when the conveying outlet pressure is lower than a preset target switching pressure value, a conveying task is seamlessly switched to a second pump set full of materials. Furthermore, according to the method, the target switching pressure value is adaptively adjusted by recording pressure data (such as the maximum value and the high-pressure duration) of a historical period, and optimization can be carried out by combining a unit energy consumption index according to operation mode instructions such as the highest efficiency or the optimal energy efficiency. According to the method, a new efficient conveying stage is used for replacing a low-efficiency pipe cleaning stage, continuous conveying is achieved, the conveying capacity and the energy efficiency of the system are improved, and the intelligence and the working condition adaptability of the system are enhanced.

The invention provides a construction method for controlling the ground pressure of a goaf by a room-and-pillar method through interval type dry material filling, and belongs to the technical field of mining engineering. According to the method, a discontinuous supporting system is constructed in a goaf by utilizing the natural accumulation characteristic of a discrete material. The method comprises the following specific steps: firstly, actually measuring goaf roof and jamb states to plan a path; a filling control section is calibrated with 20-30 meters as the standard in the excavation advancing direction, the space between one to two rows of ore pillars is selected in the section to serve as a stress bearing core area, and the rest space serves as a ground pressure release cavity area; then, dry materials are conveyed in a mechanical throwing and filling mode, a blanking point is controlled to take a natural repose angle as a boundary, and a local stable accumulation body for supporting the top plate is formed under the condition that a manual retaining wall is not needed. According to the method, construction is sequentially propelled, so that the filled sections and the unfilled sections are alternately distributed, an interval supporting structure combining rigid supporting and flexible pressure relief is formed, and a construction strategy is dynamically adjusted according to monitoring data.

1. Name of the product in this design: Vibrating screen (single drum type). 2. Application of this design: This design is used for screening granular materials such as grains. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention relates to the field of granular material feeding technology, and more particularly to a granular material feeding device for cable processing, comprising a support frame, a connecting cylinder, a support ring, and a storage tank fixedly connected to the top of the support frame, a mesh cylinder rotatably connected to the inner side of the right end of the connecting cylinder, the mesh cylinder comprising a solid part and a mesh part, an annular groove being formed between the solid part and the mesh part, a connecting rod being provided in the annular groove to fix the solid part and the mesh part together, one outer end of the solid part being rotatably connected to the inner side of the connecting cylinder, the outer side of the mesh part being rotatably connected to the inner side of the support ring, a collecting ring fixedly connected to the top of the support frame, the collecting ring being disposed at the bottom end of the annular groove, the bottom end of the collecting ring being connected to a discharge pipe, the mesh cylinder gradually tilting downwards from the inlet end to the outlet end, a first heating grid and a fan fixedly connected to the inner side of the connecting cylinder, and partition plates being evenly arranged on the inner side of the mesh part.

1. The name of the design product: track type sampling machine (electric cylinder type). 2. The use of the design product: the design product is used for sampling granular materials. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The application discloses a composite prevention and treatment structure for preventing soft soil and miscellaneous fill from interpenetrating and a construction method, and belongs to the technical field of foundation treatment. The structure is arranged between a soft soil layer and a miscellaneous fill layer and sequentially comprises, from bottom to top, a lower layer isolation unit composed of a geocell filled with granular materials and forming a flexible raft support, a microbial cementation unit including a three-dimensional microbial carrier layer and microbial mineralization products planted in the three-dimensional microbial carrier layer, and an upper layer constraint unit adopting a geogrid and a mechanical interlocking with the miscellaneous fill. Through the synergistic effect of physical isolation and biological cementation, the calcium carbonate crystals generated by MICP are used to block the interface micro-pores, and the macro-reinforcing function of the geosynthetic material is combined, so that the interface fine particle loss and interpenetration deformation problems are effectively solved. The application has the advantages of high shear strength, good reinforcement uniformity, green environmental protection, strong puncture resistance and the like, and can significantly improve the long-term stability of a complex foundation.

A granular material spreading system is provided. The granular material spreading system includes a spreading frame and a tote. The tote is configured to receive a granular, spreadable material and includes an opening allowing the granular material to exit the tote. The tote exit opening is opened by the spreading frame during spreading. When the spreading frame is coupled to the spreading machine, the tote is rotatable by the spreading machine between a storage position in which the opening in the tote is facing horizontally toward the spreading machine and a spreading position in which the opening in the tote is facing the ground surface.

The present application is directed to the high efficiency energy saving type multi-stage crushing system of granular material, the upper left side of the shell is fixed with first and second crushing mechanism, and the lower part is fixed with third crushing mechanism; the first classification guide mechanism is fixed at the discharge port of the first crushing mechanism, and the first classification guide mechanism is respectively connected with the first conveying mechanism, the feed inlet of the third crushing mechanism and the total discharge port; the second classification guide mechanism is fixed at the discharge port of the second crushing mechanism, and the second classification guide mechanism is respectively connected with the feed inlet of the second crushing mechanism and the total discharge port; the first crushing mechanism crushes the granular material, the first classification guide mechanism screens out the large granular material and sends it to the second crushing mechanism, screens out the medium granular material and sends it to the third crushing mechanism, and screens out the small granular material and sends it to the total discharge port; the second crushing mechanism crushes the large granular material, the second classification guide mechanism screens out the small granular material and sends it to the total discharge port, and the rest of the material is sent to the third crushing mechanism; the third crushing mechanism crushes the material and sends it to the total discharge port.

This utility model relates to the field of quantitative feeding technology and discloses a quantitative feeding device for granular materials, including a supporting base plate. Two support rods are fixedly connected to the top of the supporting base plate, and a material hopper is fixedly connected to the top of the two support rods. A discharge port is provided at the bottom of the material hopper. A rotating hole is opened at the top of the supporting base plate, and a rotating shaft is rotatably connected within the rotating hole. A first synchronous wheel is fixedly connected to the bottom surface of the rotating shaft, and a receiving tray is fixedly connected to the top of the rotating shaft. The receiving tray has four square holes, and a mounting frame is fixedly connected to the bottom of the supporting base plate. Through the cooperation of the square holes on the receiving tray with the discharge port and the discharge hole, and the intermittent rotation of the receiving tray driven by a stepper motor, a single quantitative feeding is achieved with each rotation. The volume of the square holes determines the amount of material fed in a single operation, providing a stable and accurate supply of raw materials for processes such as woven bag production, ensuring product quality and efficiency.

The invention relates to the technical field of stirrers, in particular to a bidirectional convection type particle material stirrer with a dead angle prevention structure, which comprises a mixing conical barrel, a barrel cover is fixedly connected to the top of the mixing conical barrel, a mounting shell is arranged in the mixing conical barrel, and the top end of the mounting shell is rotatably connected to the axis of the barrel cover; rotating shafts are rotationally connected to the two ends of the bottom of the mounting shell, spiral stirring blades are fixedly connected to the surfaces of the rotating shafts, and the two spiral stirring blades are oppositely arranged in the mixing conical barrel; after the particle materials are lifted upwards through the spiral stirring blades, a recess generated by material missing is generated in the center of the mixing conical barrel, and the two strands of upwards-lifted particle materials converge towards the central recess of the materials under the action of gravity, so that the particle materials form all-directional convective circulation of'two-way rising-diffusion-falling 'in the mixing conical barrel; therefore, efficient mixing of the particle materials is realized.

The invention relates to the technical field of pneumatic conveying visual monitoring, in particular to a particle material pneumatic conveying visual monitoring system and method with dustproof, anti-vibration and anti-abrasion functions. Comprising a conveying pipeline; one end of the conveying pipeline is connected with the fan, and the other end is connected with the receiving bin; monitoring equipment and a feeding bin are arranged between the fan and the receiving bin; the feeding bin is arranged close to the fan; the monitoring equipment comprises a protective cover, a protective sleeve, an air pump, a camera and an image processing and early warning unit; the protective cover is fixedly connected to the outer wall of the conveying pipeline; a placing cavity is formed in the protective cover; the containing cavity communicates with the inner side of the conveying pipeline through the observation window. The conical annular air curtain is arranged at the front end of the lens of the camera, a continuous positive pressure air curtain is formed, pollution and abrasion of high-concentration dust to the lens are effectively isolated, flowing airflow of the camera has the heat dissipation and self-cleaning functions, the service life of a visual system under the severe working condition is remarkably prolonged, and the reliability of the visual system under the severe working condition is remarkably improved.