66 results about "Granular media" patented technology

The present invention relates to a method for treating polymer elements obtained by an additive manufacturing process. The method encompasses providing a treating liquid in a chamber of an apparatus and providing the polymer elements to be treated. Further, the method optionally encompasses a heating step of heating a treating liquid to a temperature below an upper threshold temperature, wherein the upper threshold temperature is in a range of 1° C. to 80° C. below the melting temperature of the polymer from which the polymer elements are formed. The method further encompasses a treatment, preferably smoothing, step, wherein the polymer elements are in, or come into, contact with the treating liquid at a temperature above a lower threshold temperature and below the upper threshold temperature for a predetermined period. This is carried out under conditions in which the treating liquid is in liquid state. Furthermore, the method optionally encompasses a cooling step for cooling the polymer elements. The present invention also relates to an apparatus for treating polymer elements.

The invention discloses a wet particle medium mechanical property numerical calculation method based on CFD-DEM multiphase flow coupling, and relates to the technical field of discrete element simulation technology and computer fluid dynamics, and the method comprises the following steps: firstly, obtaining initial information of a wet particle medium; secondly, establishing a geometric model of wet particles through a DEM solver; then, on the basis of the JKR theory, interaction parameters of the wet particles are obtained; then, on the basis of the geometric model and the interaction parameters of the wet particles, a fluid dynamics and discrete element method CFD-DEM coupling simulation model is built through a VOF coupling interface, and analogue simulation is conducted on the movement process of the robot foot paddle on the wet particle medium ground. Therefore, by adopting the numerical calculation method for the mechanical properties of the wet particle medium based on CFD-DEM multiphase flow coupling, the interaction among the wet particles can be accurately simulated, the simulation analysis precision and reliability of the wet particle medium are improved, and the dynamic simulation of the behavior of the wet particle medium is realized.

A compact vibratory burrowing probe, particularly beneficial in low gravity space exploration environments, uses lateral or stirring-like vibrations to fluidize a surrounding regolith, thereby decreasing the penetration resistance, and compensating for the light overhead weight to improve the burrowing action of the probe into the surface of the terrain of explored moons, planets, or asteroids. Included is a novel vibratory mechanism capable of imparting the novel lateral or stirring vibration, as well as a more conventionally oriented longitudinal vibration.

There is a scent delivery device and method of manufacture thereof wherein a scent delivering granular media is disposed within an airtight or textile container. The granular media includes: free-flowing non-silica, non-garnet, and non-staurolite glacial remnant sand mixed in a drum with powdered orris root fixative physically bonded to the free-flowing non-silica non-garnet, and non-staurolite glacial remnant sand and a fragrance fixed to the orris root fixative. The airtight container is a clear glass jar with a lidded top in functional communication with a heating lamp such that heat from the lamp is directed to the container and thereby to the scent delivering granular media.

The present application relates to the field of robot technology, especially a wheel-foot composite flat warehouse monitoring system and control method for unstructured granular medium, including adaptive four-wheel-foot composite mobile chassis, dual-mode operation module carrying flat warehouse mechanical arm and deep probe, multi-source perception hub and controller, the core lies in that through the multi-mode adaptive switching of wheel-foot composite chassis, the anti-sinking movement is realized on the loose grain surface; and the WBC whole body controller based on inverse dynamics and granular mechanics is adopted, so that the chassis can actively offset the huge reaction force generated by the flat warehouse operation of the mechanical arm, ensure the overall stability during heavy load operation, at the same time, the variable stiffness admittance control is adopted for the mechanical arm, high efficient flat warehouse and automatic obstacle crossing are realized, the present application completely solves the technical bottleneck that the existing equipment is easy to sink and operation unstable on unstructured granular medium, and realizes the full autonomous and integrated grain warehouse flattening and deep layer monitoring operation.

Provided is a method for industrially advantageously producing an organic acid salt from which a perovskite-type composite oxide having a small particle diameter and a high crystallinity can be obtained, the method comprising mixing and reacting a solution (solution A) containing any one component of an organic acid, an A-site element compound, and a B-site element compound with a solution (solution B) containing two components of the organic acid, the A-site element compound, and the B-site element compound to produce an organic acid salt, wherein the two components are not contained in the solution A. The method for producing the organic acid salt is characterized by firstly feeding, into a reaction vessel, either one of the solution A and the solution B and a granular medium in an amount of 5.0-95.0 vol% relative to the volume of the one solution, and then stirring the solution and the granular medium in the reaction vessel and therewhile mixing and reacting the solution in the reaction vessel with the other of the solution A and the solution B.

A hybrid filter assembly for an aquatic application is provided in the form of a first filtration stage, a second filtration stage in fluid communication with the first filtration stage, a valve system in fluid communication with the second filtration stage, and a controller. The first filtration stage includes a granular media, and the second filtration stage includes a first membrane filtration module and a second membrane filtration module. The valve system is designed to selectively control fluid flow within the second filtration stage. The controller, which is in communication with the valve system, is designed to direct actuation of the valve system to fluidly isolate the first membrane filtration module from the second membrane filtration module.

The application discloses a heating structure of a curved black body, which comprises a heat-conducting seat, a heat-conducting seat and a black body radiation source which are sequentially stacked and installed, wherein the heat-conducting seat, the heat-conducting seat and the black body radiation source are all concave structures, the concave surface of the black body radiation source is a curved surface, a heat-conducting medium is filled in the gap between the heat-conducting seat and the heat-conducting seat and the black body radiation source, and the heat-conducting medium comprises a flexible medium and a granular medium. The application is used for the K scene of a temperature measurement module, heat transfer is performed on the curved black body radiation source, uniform heating of the curved black body is realized, the heat transfer effect is stable, and the K effect of the module can be effectively improved.

The application discloses a kind of granule volume measurement methods based on gap correction integration, it is related to granular medium measurement technical field, comprising the following steps: S1, different time point cloud acquisition and uniform modeling;S2, nonlinear gap correction integration model establishment;S3, gap feature extraction and input construction;S4, neural network gap correction factor prediction;S5, volume change calculation and dynamic application.The application adopts the above-mentioned kind of granule volume measurement method based on gap correction integration, by introducing time variable and nonlinear correction mapping in traditional voxel integration framework, constructs the space-time nonlinear model capable of representing the dynamic change of internal porosity of granular medium, in combination with neural network learns the measurement method of complex mapping relationship between internal porosity and volume change of granular medium, realizes high-precision, nonlinear, adaptive detection to the real volume of granular medium.

System for measuring the moisture content of a granular medium. This description relates to a system (1) for measuring the moisture content of a granular medium (2) comprising a collection element (3) intended to be placed in the granular medium (2) in contact with the granular medium (2), and configured to collect water present in the granular medium (2), a reservoir (14) for receiving the collected water, moisture sensors (16) in regions at least partially distinct from the granular medium (2), at least one temperature sensor (24), at least one conductivity sensor (26) configured to measure the conductivity of the water received in the reservoir (14), and transport means (18, 21) configured to transport water from the reservoir (14) to the conductivity sensor (26). Figure for the abstract: Fig. 1

The invention belongs to the technical field of chemical equipment, and relates to an orifice flow disc type liquid distributor suitable for a high-viscosity or granular medium and a use method. The orifice flow disc type liquid distributor comprises an orifice flow disc, an outer cylinder is arranged on the orifice flow disc, air rising holes and liquid distribution holes are evenly formed in the orifice flow disc, the liquid distribution holes are distributed around the air rising holes, air rising pipes are arranged on the air rising holes, liquid baffles are arranged on the air rising pipes, the liquid distribution holes are of an inverted-cone-shaped structure, rib plates are arranged below the liquid distribution holes, and the rib plates are arranged on the outer cylinder. Liquid distribution plates are arranged at the lower ends of the rib plates. The liquid distribution holes of the inverted-cone-shaped structure are adopted, liquid flowing resistance can be reduced, the diameter of the upper end is large and can rapidly receive liquid in the liquid distribution groove, the diameter of the lower end contracts, local acceleration can be formed, kinetic energy is more stable when the liquid flows out, and uneven liquid outlet caused by flow fluctuation is avoided.

The utility model relates to the technical field of flange remote transmission pressure transmitters, and provides a flange remote transmission pressure transmitter with good wear resistance, which comprises a mounting flange, a diaphragm assembly arranged on one side of the mounting flange, the diaphragm assembly comprises a base, the base is fixedly connected to the central position of the mounting flange, one side of the base is fixedly connected with a connecting pipe, and the other side of the base is fixedly connected with a flange. The other side of the base is fixedly connected with an isolation diaphragm, the inner side of the base is provided with a through communicating groove, the inner side of the connecting pipe is fixedly connected with a capillary tube, the capillary tube is filled with a liquid medium, one end of the capillary tube is communicated with the communicating groove, the other end of the capillary tube is connected with a pressure sensor assembly, and the outer side of the connecting pipe is provided with a heating piece. According to the utility model, the diamond wear-resistant coating is coated on the base layer, so that the isolation diaphragm can be better protected from being worn by granular media, the wear resistance of the isolation diaphragm is improved, the service life of the flange remote transmission pressure transmitter is prolonged, and the working stability and the detection accuracy of the flange remote transmission pressure transmitter are improved.

A compact vibratory burrowing probe, particularly beneficial in low gravity space exploration environments, uses lateral or stirring-like vibrations to fluidize a surrounding regolith, thereby decreasing the penetration resistance, and compensating for the light overhead weight to improve the burrowing action of the probe into the surface of the terrain of explored moons, planets, or asteroids. Included is a novel vibratory mechanism capable of imparting the novel lateral or stirring vibration, as well as a more conventionally oriented longitudinal vibration.

The utility model discloses a shield pump for conveying granular media, which comprises a connecting seat, the front end of the connecting seat is connected with a pump shell through a flange, the rear end of the connecting seat is fixedly connected with a machine shell, a shaft sleeve is rotatably arranged in the middle of the connecting seat in a penetrating manner, and one end, facing the pump shell, of the shaft sleeve is fixedly connected with a baffle ring. The baffle ring is located in the pump shell, a plurality of arc-shaped grooves are formed in the end face, facing the shaft sleeve, of the baffle ring, a rotating shaft fixedly penetrates through the shaft sleeve and the baffle ring jointly, and the end, located in the pump shell, of the rotating shaft is fixedly connected with an impeller. In the process of conveying granular media, the rotor can drive the baffle ring to rotate in the pump shell, so that fine particles entering the gap between the baffle ring and the connecting seat can be thrown out of the baffle ring under the action of the arc-shaped groove, and the fine granular media entering the shielding cover from the fit gap between the shaft sleeve and the connecting seat are reduced; therefore, the probability that the shaft sleeve is stuck and the shielding sleeve is damaged is reduced, and the use effect is good.

The invention provides a forming and forming method and mold for a solid particle integrated fiber-reinforced metal laminate, and relates to the technical field of composite board processing, and the forming and forming method comprises the following steps: paving a pretreated metal board and a fiber-reinforced prepreg to obtain a fiber-reinforced metal laminate sample in a semi-cured state; the sample is positioned and installed in the forming female die, and the center of the sample coincides with the axis of the punch in the forming process; the edge pressing charging barrel and the forming female die are connected through a disc spring, the edge pressing charging barrel is filled with quantitative solid particle media, and a guide ring and a forming punch are assembled; the mold is heated to a prepreg forming temperature interval, and the punch compacts the medium to achieve plastic forming; and synchronously raising the temperature to a curing temperature to complete curing of the prepreg. Forming and curing processes are integrated in a single mold, the problems of interface pollution and thermal stress accumulation of traditional step-by-step manufacturing are solved by utilizing the flexible pressure transfer characteristic of granular media, and high-precision forming and interface combination strengthening machining of complex curved surface components are achieved.

The present application belongs to the technical field of whole-blade-disk parts rolling finishing, aiming to solve the problems of over-finishing of inlet and outlet edges, under-finishing of blade root and uneven finishing of whole-blade-disk parts. A kind of granular medium flow field regulation and control method for whole-blade-disk rotary vibration combined polishing is proposed, a multi-objective evaluation model of average value and variation coefficient of whole-blade-disk wear depth is constructed based on entropy weight method and subjective assignment method; the optimal process parameters are selected through orthogonal simulation of container size parameters and motion parameters; a container wall configuration optimization method is proposed for the unevenness of the blade root to the blade tip area, and the container wall configuration is optimized through response surface, neural network, genetic algorithm and other methods; to solve the problem of over-finishing of inlet and outlet edges, a blade expansion configuration regulation and control method is proposed, which comprehensively realizes the uniform consistency of whole-blade-disk finishing. The present application realizes the high surface integrity and uniform consistency of whole-blade-disk polishing.

The utility model relates to sensible heat recovery equipment field, concretely relates to a kind of molten steel slag sensible heat recovery device based on radiation heat transfer and convection heat transfer, including tank heat exchanger, vertical heat exchange tower and waste heat boiler, tank heat exchanger is used to carry out radiation heat transfer with water and high-temperature molten state steel slag, and high-temperature molten state steel slag is cooled into broken granular medium-temperature solid steel slag, while generating saturated steam;Vertical heat exchange tower is used to receive medium-temperature solid steel slag, and pass into low-temperature exhaust gas discharged by waste heat boiler, and medium-temperature solid steel slag is cooled to target temperature by counterflow heat exchange, while low-temperature exhaust gas is heated to high-temperature exhaust gas;Waste heat boiler uses saturated steam and high-temperature exhaust gas to produce superheated steam, and provide low-temperature exhaust gas.The embodiment of the utility model does not contact water in the process of cooling broken high-temperature molten state steel slag, avoids the problem that a large amount of dust-containing steam is generated by water quenching method, high-temperature steel slag and medium-temperature steel slag are treated in stages, improve heat energy recovery efficiency, while effectively saving water resources.

The invention provides an interlayer microsphere type calibration plate manufacturing method and an interlayer microsphere type calibration plate, and belongs to the field of optical detection calibration devices. The method provided by the invention comprises the following steps: sequentially carrying out ultrasonic cleaning and plasma cleaning on a first glass substrate and a second glass substrate, and blow-drying with nitrogen for later use; the surface of one side of the first glass substrate is coated with microsphere dispersion liquid and then subjected to drying treatment, and granular medium microspheres are fixed to the surface of one side of the first glass substrate; coating an optical binder on the surface of one side of the first glass substrate on which the dielectric microspheres are fixed; the second glass substrate is attached to the first glass substrate coated with the optical adhesive in an aligned mode, and the medium microspheres are packaged in an interlayer formed by the two glass substrates and the optical adhesive; and curing the optical adhesive. According to the manufacturing method and the interlayer microsphere type calibration plate provided by the invention, the problems that microspheres in an existing calibration plate are easy to fall off, the subsurface depth is insufficient and the particle size is single can be solved.

A wave energy converter having at least one energy transmitting device configured to be disposed within a granular medium and including: a flexible envelope forming an internal volume and having an upper surface and a lower surface; at least one inflatable element configured to contain a fluid and housed in the internal volume so as to be interposed between the upper surface and the lower surface; and at least one energy converting device associated to at least one of the inflatable elements and configured to produce energy upon actuation; wherein the wave energy converter is configured to actuates the at least one energy converting device when a wave impinging on the energy transmitting device.

The invention belongs to the technical field of barreling finishing machining of blisk parts, and aims to solve the problems that air inlet and exhaust edges of blisk parts are over-polished, blade roots are under-polished, and machining is not uniform. The invention provides a particle medium flow field regulation and control method for blisk spiral vibration composite polishing and grinding. A multi-target evaluation model of a blisk wear depth average value and a variable coefficient is constructed based on an entropy weight method and a subjective assignment method; optimal process parameters are selected through orthogonal simulation of container size parameters and motion parameters; a container wall configuration optimization method is provided for non-uniformity of the area from the blade root to the blade tip, and optimization design is conducted on container wall configuration through a response curved surface, a neural network, a genetic algorithm and the like; in order to solve the problem of excessive polishing of air inlet and exhaust edges, a blade expansion configuration regulation and control method is provided, and the machining uniformity and consistency of the blisk are comprehensively achieved. According to the invention, high surface integrity and uniform consistency polishing and grinding of the blisk are realized.

The invention relates to a method for filtering water by means of a filter (10, 10'') comprising at least one granular medium forming a layer of granular media (14), which is submerged and placed in a tank (18), the filtering method comprising: - at least two steps of cleaning (2) the filter, the filtering method being characterised in that it comprises at least one step of unclogging (4) the granular media, comprising the following steps: - stopping the filtering of the water; - at least once, placing the grains forming the granular media in suspension by means of at least one injection of at least one unclogging fluid into the layer of granular media (14); - returning the granular media to the state in which it forms a layer of granular media (14) of the suspended material previously retained in the layer of granular media (14); and - resuming the filtering.

The invention discloses a tri-eccentric U-shaped metal butterfly valve suitable for particle media, and relates to the technical field of butterfly valves, the tri-eccentric U-shaped metal butterfly valve comprises a valve body, a driving assembly, an adjusting assembly, a valve assembly and a driving rod, the driving assembly is fixedly connected with the valve body, and the driving assembly comprises a fixing plate and a support. In the process that the butterfly valve is put into use, the motor is started, along with continuous operation of the motor, the first friction ring continuously rotates, so that the second friction ring continuously bears force, that is, the threaded pipe can always keep a tightening state on the bolts on the two sides under the action of friction force, and through the continuous tightening state of the bolts, the safety of the butterfly valve is improved. The two sets of first sealing flanges and second sealing flanges can be always kept in a stable pressing and tightening state, so that the sealing state of the connecting position of the butterfly valve is stable, leakage caused by loosening of the connecting position of the butterfly valve in the using state of high-speed particle medium fluid for a long time is avoided, and the using stability of the butterfly valve is effectively improved.

The invention provides an impeller for a granular medium delivery pump and the granular medium delivery pump. The impeller comprises blades and a cover plate, and a plurality of short back ribs are arranged on the side face of the periphery of the cover plate at intervals in the rotating direction. According to the impeller, the short back ribs are arranged on the cover plate of the impeller, particulate matter entering the cavity between the cover plate and the protective plate can be effectively reduced, the particulate matter is prevented from entering the cavity along with centrifugal force brought by rotation of the impeller, and a flow passage component is effectively protected.

The invention relates to the technical field of surveying and mapping instruments, and discloses mountain topography surveying and mapping integrated equipment based on Beidou positioning, which comprises a surveying and mapping main machine, a pneumatic chassis and a self-adaptive base, a metal ball rotor is arranged at the bottom of the surveying and mapping main machine, and the whole mass center of the surveying and mapping main machine is positioned below the sphere center of the metal ball rotor to form a gravity pendulum bob; a hemispherical cavity matched with the metal ball rotor is formed in the top of the pneumatic chassis, the metal ball rotor is located in the hemispherical cavity, an air hole is formed in the bottom of the hemispherical cavity, and the top of the self-adaptive base is fixedly connected with the bottom of the pneumatic chassis. The self-adaptive base comprises a flexible bag body and a granular medium filled in the flexible bag body, and a pneumatic control unit is arranged in the pneumatic chassis. A flexible capsule body wrapping graded particles serves as a contact chassis, an absolute rigidity anchoring base with the maximum stress area is constructed on the extremely irregular rock surface, and the equipment is endowed with extreme wind vibration resistance and anti-sliding capacity.

The present invention pertains to a method for a quadruped robot to navigate through granular media, such as deep sand and for providing improvements in the walking performance over various types of granular media. In particular, the present invention proposes reducing the assumed coefficient of friction about the ground, impacting the ground harder than nominal in the vertical direction at touchdown, and forcing a toe lift off into swing if a knee joint extends beyond a threshold stance to help increase the robustness of a quadruped robot's locomotive abilities on challenging terrains and provide an improvement in the field of biomechanics and robotic navigation.

The invention relates to the field of sensible heat recovery methods, in particular to a molten steel slag sensible heat recovery method which comprises the following steps: feeding high-temperature molten steel slag into a tank heat exchanger, cooling the high-temperature molten steel slag in a manner of combining radiation heat exchange with conduction heat exchange, and meanwhile, cooling the high-temperature molten steel slag in a tank heat exchanger; in the cooling and condensing process, mechanical impact force is applied to the steel slag for crushing, so that granular medium-temperature solid steel slag and a first part of saturated steam are obtained; and the medium-temperature solid steel slag and the first part of saturated steam are fed into post-stage waste heat recovery equipment, sensible heat of the medium-temperature solid steel slag and the first part of saturated steam is further recovered to produce a final product, the final product is superheated steam, and meanwhile the medium-temperature solid steel slag is cooled to the target temperature. According to the embodiment of the invention, water is not contacted in the process of cooling and crushing the high-temperature molten steel slag, so that the problem that a large amount of dust-containing steam is generated by a water quenching method is avoided, the heat energy recovery efficiency is improved, and meanwhile, water resources are effectively saved.

The present disclosure relates to the use of abrasive media blasted surfaces (e.g., sandblasted surfaces, bead blasted surfaces, etc.) for reducing the spreading of material(s) migrating (e.g., reducing oil bleed spreading, etc.) from thermal management and / or electromagnetic interference (EMI) mitigation materials (e.g., thermal interface materials (TIMs), EMI absorbers, thermally-conductive EMI absorbers, electrically-conductive elastomers (ECEs), electrically-conductive composites, combinations thereof, etc.) and other polymer-inorganic composite materials used for other purposes. The spreading of material(s) migrating from a composite may be reduced without having to change a formulation of the composite. An exemplary method includes abrasive blasting a surface with abrasive media (e.g., granular media, spherical media, bead-shaped media, other abrasive particles, etc.) such that the abrasive media blasted surface is configured to be operable for reducing the spreading of material(s), if any, migrating from a composite along the abrasive media blasted surface.

The present application relates generally to methods and systems for delivering amendments like sulfate to a subsurface below a ground surface. In one embodiment a process comprises advancing a borehole from the ground surface to the subsurface below the ground surface wherein the borehole is advanced above a water table. The borehole is at least partially filled with a mixture comprising gypsum and a granular media. The borehole is then irrigated with water to at least partially dissolve the gypsum and to spread the dissolved gypsum to a desired treatment zone below the ground surface. The irrigating may comprise employing a gravity fed trickle flow using an irrigation line while the desired treatment zone may comprise one or more hydrocarbons.

The present invention pertains to a method for a quadruped robot to navigate through granular media, such as deep sand and for providing improvements in the walking performance over various types of granular media. In particular, the present invention proposes reducing the assumed coefficient of friction about the ground, impacting the ground harder than nominal in the vertical direction at touchdown, and forcing a toe lift off into swing if a knee joint extends beyond a threshold stance to help increase the robustness of a quadruped robot's locomotive abilities on challenging terrains and provide an improvement in the field of biomechanics and robotic navigation.