108 results about "Particle material" patented technology

The invention relates to the technical field of material transportation, in particular to a conveying pressure control method and device of a powder and particle pneumatic conveying system. The method comprises the steps that the material humidity, the conveying pressure and the air speed of a frequency conversion fan are obtained; determining a humidity adjusting coefficient; in the pressurization stage, a suppression coefficient is determined according to the current wind speed and the target wind speed; according to the humidity adjustment coefficient and the inhibition coefficient, inhibiting the proportionality item to obtain a target proportionality coefficient; enhancing the differential term in combination with the humidity adjustment coefficient and the pressure deviation to obtain a target differential coefficient; in the pressure reduction stage, the standard humidity is compared with the air speed and the conveying pressure under the material humidity at the current sampling moment and the humidity adjusting coefficient, the integral item is adjusted, and a target integral coefficient is obtained; and adjusting the conveying pressure based on the adjusted PID coefficient. The problem of asymmetry of bidirectional adjustment of pressurization and depressurization can be solved, the adjustment logic is optimized, and the conveying efficiency and stability of pneumatic conveying of powder and particle materials are improved.

The invention provides a construction method and device of a broken particle discrete element numerical model and application of the construction method and device. The method comprises the following steps: constructing N isometric particle contour models based on N real particles; based on the target grading curve and the total number of the particles, constructing a spherical particle set model; replacing each spherical particle model in the spherical particle set model with a breakable model composed of a plurality of polyhedrons one by one; and after all the spherical particle models are replaced by fragmentable models, generating a fragmentable particle material numerical model instruction file, and directly inputting the instruction file into PFC3D in a reading manner to generate a fragmentable particle discrete element numerical model. The breakable particle discrete element numerical model obtained through the construction method has the shape of real particles and is composed of coplanar Voronoi polyhedrons, the size of the model conforms to grading characteristics, and analysis of particle breaking characteristics and the microscomic influence of particle breaking on material macromechanical characteristics is facilitated.

The invention relates to the field of debris flow disaster prevention and control, in particular to a method for predicting the flow of large-particle blocking and collapsing debris flow at the sudden shrinkage position of a channel, which comprises the following steps: determining the stress state information of large-particle materials according to the movement process of the large-particle materials in the channel along with debris flow; according to the stress state information and the stress balance condition, a flow prediction model of the large-particle blocking and collapsing debris flow at the channel sudden shrinkage position is constructed; building an experimental device, and placing a simulated large-particle material in the experimental device; obtaining debris flow characteristic parameters and large particle material motion characteristic parameters through an experimental device; and measuring the real channel to obtain a large particle material form parameter and a channel form parameter, so as to obtain the flow of the large particle blocking and collapsing debris flow at the channel sudden shrinkage part of the real channel. The experiment device is built to simulate the debris flow process for multiple times to obtain corresponding parameters, the debris flow is calculated in combination with the debris flow prediction model, and the debris flow prediction reliability is improved.

The invention discloses an intelligent sorting and crushing integrated device based on a modified plastic particle production line, and relates to the technical field of modified plastic processing, the intelligent sorting and crushing integrated device specifically comprises a screening cylinder, an obliquely arranged screening plate is mounted in the screening cylinder, a circulating assembly is mounted on the peripheral side face of the screening cylinder, and a stirring assembly is mounted in the screening cylinder; a crushing assembly is mounted above the screening cylinder, the circulating assembly comprises a collecting box, a circulating pipe communicated with the interior of the collecting box is fixedly arranged at the top of the collecting box, the stirring assembly comprises a stirring rod rotationally matched with the screening plate, and the crushing assembly comprises a crushing box; automatic material returning and reprocessing of unqualified particles are achieved through the closed circulating pipe, manual intervention or additional conveying equipment is not needed, the circulating pipe depends on the synergistic effect of gravity and system negative pressure, large-particle materials in the collecting box are lifted to the top of the screening barrel to be screened again, no additional power consumption exists in the whole process, the comprehensive cost is reduced, and the working efficiency is improved.

According to the granular material crushing resistance testing system and method based on dynamic water pressure loading, the high-precision dynamic water pressure loading system, the transparent closed testing cavity and the multi-modal data acquisition and analysis system are integrated, so that dynamic mechanical property testing of a granular material in a simulated actual hydraulic environment is realized; the dynamic water pressure loading system is used for generating continuous and adjustable water flow pressure and vividly simulating dynamic hydraulic impact and alternating stress in an actual working condition; the transparent test cavity is combined with a high-speed camera shooting technology to capture the particle deformation and crushing process in real time, a high-sensitivity pressure sensor monitors critical crushing pressure synchronously, and dual-mode data association analysis realizes visualization of the particle crushing process and collaborative accurate judgment of a crushing critical point for the first time; the device supports dual modes of stepped pressurization and constant-pressure loading, can output a single-particle crushing resistance value, can also count the batch particle breakage rate, breaks through the limitation of a traditional static test, and remarkably improves the goodness of fit between a test result and an actual working condition.

The invention relates to the technical field of dryers, in particular to a particle material rotary dryer which comprises a support, a main barrel and a screening barrel. The main barrel is obliquely arranged on the support and can rotate around the axis of the main barrel, a lifting section is arranged in the main barrel and comprises a plurality of lifting plates, the lifting plates are evenly distributed on the inner circumferential wall face of the main barrel, and each lifting plate is of an L-shaped structure. The screening barrel is located in the main barrel body and coaxial with the main barrel body, screening holes are formed in the screening barrel, and the hole diameters of the screening holes are gradually increased in the rotating direction of the main barrel body. According to the rotary dryer for the particle materials, the screening barrel is arranged in the main barrel, material grading and peak shifting falling are achieved, the larger the particle size of the materials is, the longer the rotating distance is, the higher the lifting height is, the later the falling time is, and the longer the contact time with hot air is, and the material falling uniformity and the material drying quality stability are improved.

The utility model relates to the technical field of a high-accuracy grain counting structure for a packaging machine, in particular to a high-accuracy grain counting structure for a packaging machine, which comprises a shell and straight plates, the bottoms of the left side and the right side of the shell are respectively and fixedly connected with the inner sides of the two straight plates, and the inner wall of the shell is connected with a feeding structure. The top of the shell is connected with an opening and closing structure, a motor in the feeding structure is powered on to work, an output shaft of the motor drives a round rod to rotate, the rotating round rod drives a cylinder to rotate, particle materials in a groove in the outer wall of the rotating cylinder rotate along with the round rod, and when the cylinder rotates to the lower portion, the particle materials in the groove fall downwards and enter a packaging machine to be packaged. At the moment, the grooves in other positions of the outer wall of the cylinder rotate to the upper portion, the particle materials in the shell enter the grooves to be collected, blocking of the high-accuracy particle counting structure for the packaging machine is avoided, and normal discharging of the high-accuracy particle counting structure for the packaging machine is ensured.

The utility model relates to the technical field of robots, in particular to a sorting device, a mechanical arm and a humanoid robot, the sorting device is arranged on the mechanical arm, and the sorting device comprises a shell provided with a sorting cavity; the separation net is arranged in the sorting cavity, and the separation net divides the sorting cavity into a collection cavity and an air suction cavity; the sorting pipe is connected to the shell and communicates with the collecting cavity; the sorting cabin is arranged on the shell and communicates with the collecting cavity; the fan is arranged on the shell and located in the air suction cavity, and the fan is used for sucking air from one side of the separation net so that a sorting air channel can be formed between the sorting pipe and the collecting cavity. When particle materials are sorted, the tail end of the sorting pipe is aligned with the particle materials, the particle materials can be quickly sucked into the collecting cavity, a specified air channel is formed through the fan, the structure is simple, and therefore the manufacturing and maintaining cost is reduced. Sorting is achieved through airflow, the complexity of the robot during operation is reduced, the operation difficulty is lowered, and therefore the sorting efficiency is improved.

The invention belongs to the technical field of mineral processing, and aims to solve the problems of universality of an underflow clamping phenomenon, low separation precision and high separation energy consumption of an existing classification cyclone. The invention provides three-product micro-fine particle rotational flow-reverse flow grading equipment which comprises an ore pulp distributor, an overflow collecting box, a reverse flow grading box and a plurality of grading hydrocyclones. The ore pulp distributor is used for uniformly distributing ore pulp to each grading cyclone; fine materials enter an overflow collecting box through an overflow pipe of the grading cyclone; a countercurrent grading area, a coarse-grain material collecting area and a middle-grain material collecting area are arranged in the countercurrent grading box, and the countercurrent grading area is used for separating coarse-grain materials and middle-grain materials through an arc-shaped rising structure and rising water flow. Secondary classification of the bottom flow of the cyclone can be achieved, the content of the thin bottom flow is effectively controlled, the design of the water seal of the bottom flow pipe is adopted, no air column exists in the cyclone process, the classification effect and stability are guaranteed, and meanwhile energy consumption can be effectively reduced.

The utility model belongs to the technical field of fluid pipe fittings, and particularly relates to a pneumatic conveying short-radius elbow structure, which is formed by sequentially connecting a first pipe joint, an elbow joint and a second pipe joint, and is characterized in that the first pipe joint and the second pipe joint are both variable-diameter pipe bodies with large ends and small ends, and small-diameter pipe orifices are connected with the elbow joint; a lining is arranged in the bent joint and is of a smooth pipe body structure, the inner diameter of the lining is continuously variable in cross section, the two ends of the lining are reduced towards the middle section along the axis, the diameter r of the middle portion is the smallest, and the eccentric distance a which is 5-10 mm and deviates towards the small-diameter direction is formed between the lining and the axis of an inlet. The bent joint is connected with the first pipe joint and the second pipe joint through flanges or welding. Compared with the prior art, the ceramic elbow has the advantages that the lining layer of the elbow joint is formed by sintering ceramic materials, the ceramic materials have the advantages of being high in hardness, good in abrasion resistance, high in chemical stability and the like, scouring and impacting of fluid and particle materials can be effectively resisted, the service life of the elbow is prolonged, and the problem of local excessive abrasion is solved.

The utility model discloses a tank body for a powder and particle material transport vehicle, which comprises a transport tank body, one side of the top of the transport tank body is communicated with a feed inlet used for feeding, the bottom of the transport tank body is communicated with a discharge pipe used for discharging, a discharge mechanism is arranged in the transport tank body, and the discharge mechanism is connected with the transport tank body. The discharging device is used for discharging powder in the conveying tank body; by means of the arrangement of the discharging mechanism, when powder and particle materials in the conveying tank body are discharged, a motor works to drive a vertical rod to rotate, a first driving bevel gear on the surface of the vertical rod is synchronously driven to rotate, and then the first driving bevel gear is connected with a first driven bevel gear in a meshed mode; and the two first transverse rods and the crushing blades on the surfaces of the first transverse rods are synchronously driven to rotate, so that caked powder and particle materials in the conveying tank body are crushed, and the situation that the discharging pipe is blocked due to more caked powder and particle materials, and discharging of the powder and particle materials is affected is avoided.

The utility model discloses a filtering device for production of a diluting tank, and relates to the field of diluting tanks. The filtering device for production of the diluting tank comprises a filtering cover and a rotating piece rotationally arranged at the top of the filtering cover, the filtering cover comprises a bowl-shaped container and a net-shaped protrusion arranged at the position of the bowl-shaped container, and the rotating piece comprises an arc-shaped scraping strip attached to the surface of the net-shaped protrusion and hollow stirring blades fixedly arranged at the outer end of the arc-shaped scraping strip. And grinding plates are fixedly arranged at the bottoms of the plurality of hollow stirring blades. According to the filtering device for production of the diluting tank, in the process that a rotary connecting piece rotates to stir and accelerate dissolution, a rotating piece at the bottom is driven to rotate, hollowed-out stirring blades stir particle materials deposited at the bottom, meanwhile, a grinding plate makes contact with an annular net plate to grind particles and accelerate dissolution, and arc-shaped scraping strips move on the surfaces of net-shaped protrusions, so that the particles are completely dissolved. And particles on the surfaces of the particles are scraped off, so that insoluble impurities in the particle materials are prevented from blocking the net-shaped bulges during discharging.

The application relates to a numerical prediction method for the flow dynamics characteristics of coarse particle solid-liquid two-phase flow in a vertical lifting pipeline, and belongs to the technical field of numerical prediction of flow dynamics characteristics. In order to solve the problem that the influence of particle movement on the surrounding fluid is not considered in the current theoretical calculation and numerical simulation of the solid-liquid two-phase flow in the pipeline, the application firstly models and divides the grid of the fluid domain; a particle model is established based on a particle material simulation software, and the particles are controlled in a discrete manner; then, a coupling interface is established based on a computational fluid dynamics software through a coupling interface control equation; the computational fluid dynamics software calculates and monitors the state of the fluid, which is transported to the particle material simulation software as the external environment of the particles; the interference caused by the movement of the particles is also transmitted to the computational fluid dynamics software through the coupling interface; and the numerical prediction of the flow dynamics characteristics of the coarse particle solid-liquid two-phase flow is realized based on the initialized coupling interface, the pipeline model and the particle model.

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 belongs to the technical field of precision machining, and relates to a hemispherical harmonic oscillator porous flow channel device for improving abrasive particle material flow field intensity, which comprises a profiling flow channel module, and the profiling flow channel module is composed of a Gyandroid minimal curved surface porous structure profiling flow channel main body and a flow channel nozzle base, the specific structure is as follows: a Gyandroid minimum curved surface porous structure is a profiling runner main body structure, the porous structure is formed by stacking and connecting Gyandroid minimum curved surface cell elements with uniform density layer by layer, and the porosity of the porous structure can be selected as 30%, 50% and 70% respectively; a flow channel base is machined, the exterior of the flow channel base is of a columnar structure, a conical through hole is formed in the columnar structure, the inner wall of the conical through hole is of a threaded structure, and a profiling module is fixed to the base; geometric parameters of a polishing channel are precisely adjusted, an internal fluid path is improved, stress on the surface of a workpiece is more uniform, and then the polishing efficiency of a polishing material on the surface layer of the workpiece is enhanced.

The invention discloses a particle material distribution device and a distribution method thereof.The device comprises a particle material sucking and distributing system, the particle material sucking and distributing system comprises a rotating shaft, a sucking assembly and a separation disc, the rotating shaft and the gravity direction form a preset angle, the sucking assembly and the separation disc are coaxially arranged and synchronously rotate, and the sucking assembly comprises a sucking barrel with a material passing hole formed in the center; at least two suction holes are formed in the suction cylinder, the separation disc is arranged below the material passing hole, when the suction holes are located in the first interval, the first negative pressure pipe can be opened, and the suction holes suck single particle materials; and when the suction hole sucking the particle materials is in the second interval, the first negative pressure pipe is closed, the sucked particle materials fall into the separation disc through the material passing hole, the negative pressure opening and closing system is used for opening or closing the first negative pressure pipe, and the particle material emptying system is used for emptying the particle materials in the suction barrel. In this way, efficient and continuous distribution of the single particle materials is achieved, and the efficiency, accuracy and convenience of distribution of the single particle materials are remarkably improved.

The utility model discloses a simple self-discharging hopper, and relates to the technical field of self-discharging hoppers. Comprising a self-discharging hopper mechanism, the self-discharging hopper mechanism comprises a storage hopper, a driving wheel is installed at the bottom of the storage hopper, a discharging assembly is fixedly installed on the inner side of the storage hopper, supporting assemblies are installed on the two sides of the bottom end of the storage hopper, and a material vibrating assembly is fixedly installed on the surface of one side of the storage hopper; a covering and blocking assembly is fixedly installed on one side of the top of the storage hopper, and a handle is fixedly connected to one end of the storage hopper. By means of the mode, particle materials can be stored and transferred, the particle materials can be stored and transferred to the corresponding positions to be discharged conveniently, the discharging convenience of the particle materials is improved, meanwhile, discharging control can be conducted on the particle materials, supporting vibration operation can be conducted on the hopper conveniently, and self-discharging treatment can be conducted on the particle materials in the hopper conveniently. And the particle material discharging operation effect is improved, and the practicability of the device is improved.

The application discloses a fine particle material dry separation device and a dry separation system. The fine particle material dry separation device comprises a rack, a separation bin, a separation bed, a driving device, a dust removal system and an air supply system. The separation bed comprises an upper bed body and a lower bed body located below the upper bed body. The upper bed body is provided with a first upper bed body end corresponding to the position of a feeding port and a second upper bed body end located opposite to the first upper bed body end. The position of a first discharge port corresponds to the second upper bed body end. The upper bed body is provided with a sieve hole. The aperture of the sieve hole increases in the direction extending from the first upper bed body end to the second upper bed body end. The lower bed body is provided with a first lower bed body end corresponding to the position of the first upper bed body end and a second lower bed body end located opposite to the first lower bed body end. The position of a third discharge port corresponds to the first lower bed body end. The position of a second discharge port corresponds to the second lower bed body end. The lower bed body is provided with an air inlet hole.

Provided is a method for manufacturing a spherical particle material in which the particle size distribution is easily controlled. This method has: a granulation step of granulating a raw particle material formed of an inorganic material having a D50 of not larger than 5 μm to form a granulated body; and a spherizing step of heating and melting the granulated body to form the spherical particle material having a D50 larger than a D50 of the raw particle material. A melting method is used as a basic method for manufacturing the spherical particle material having a necessary particle size distribution. The granulated body is used to manufacture the spherical particle material having the necessary particle size distribution by the melting method.

The invention belongs to the technical field of sand making and processing equipment, and particularly relates to an interval particle sorting machine with a rotary scattering disc and a sorting system. The sorting machine comprises a barrel, a material dispersing device, an air ring and a sorting device, wherein the material dispersing device is arranged in the barrel and used for dispersing materials falling on the barrel, the air ring is used for accelerating and stabilizing airflow entering the barrel, and the sorting device is used for sorting fine sand meeting the particle size requirement (within the range of 20-150 meshes). The sorting system comprises a raw material bin, a feeding machine, a bucket elevator, a sorting machine, a grinding machine, a dust remover, a fan and a finished product bin; after the materials are sorted by the sorting machine, fine sand meeting the particle size requirement is collected by the dust remover, the materials which do not meet the particle size requirement enter the grinding machine to be ground and then enter the sorting machine again to be sorted, and sorting, grinding and collecting of all the materials are achieved in a circulating mode. According to the winnowing machine, the winnowing principle is adopted, and high-precision and high-efficiency sorting of particle materials in the interval of 20-150 meshes can be achieved.

The invention relates to the technical field of particle control equipment, and discloses a uniform mixing and uniform distribution control device for coiled material particle spreading, which comprises a material box for feeding particle materials; a base; the regulation and control mechanism is used for regulating and controlling the particle materials in the material box; and the regulation and control mechanism comprises a uniform control device, a width control device and a material control device. According to the uniform mixing and uniform distribution control device for spreading the coiled material particles, the uniform distribution roller composed of the two half rollers (the first half roller and the second half roller) rotating oppositely is arranged, particle materials are automatically distributed in the left direction and the right direction to be thrown in the falling process, the distribution uniformity of the particle materials on the surface of a coiled material is effectively improved, and the uniformity of the particle materials is improved. And threaded sleeves in the width control device are matched with opening limiting frames, and the two threaded sleeves adopt opposite thread screwing directions, so that the two opening limiting frames can move relatively, the width of the discharging opening is adjusted, and the requirements of coiled materials with different widths or different sowing densities are met.

The invention relates to the field of debris flow disaster prevention and control, in particular to a debris flow velocity calculation method based on large particle starting critical conditions, which comprises the following steps: building a water tank experimental device, and placing large particle materials in the water tank experimental device; a medium flowing effect is applied to the water tank experiment device, so that a stable medium flow field is formed in the water tank experiment device; the large-particle materials are detected, and motion parameters and structure parameters of the large-particle materials are obtained; according to the motion parameters of the large-particle materials, acting force characteristic parameters in the motion process of the large-particle materials are determined; and determining the starting action flow velocity of the large-particle material according to the large-particle starting critical condition, the acting force characteristic parameters and the structure parameters. According to the invention, the water tank experimental device is built to simulate the physical process of debris flow occurrence and the debris flow motion empirical formula is utilized to judge the starting condition of large particles at the channel sudden shrinkage part, so that the recognition accuracy and reliability of sudden amplification of debris flow caused by large particle collapse at the channel sudden shrinkage part are improved.

1. The name of the design product: tank cover. 2. The use of the design product: installed on the tank of the powder and particle material transport vehicle, used for discharging during loading and for entering during maintenance. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention discloses a full-automatic high-speed grain counting machine, and relates to the technical field of production of health care products. The full-automatic high-speed particle counting machine comprises a feeding system and a material arranging device, the dispersing pipelines are arranged between the feeding system and the material arranging device and are arranged in parallel in the direction perpendicular to the material conveying direction, the dispersing pipelines are of flexible tubular structures and can independently conduct axial reciprocating telescopic motion, rotating motion around the axes of the dispersing pipelines and local radial deformation, and on the premise that particle materials are not damaged, the dispersing pipelines can be used for dispersing the particle materials. Soft and continuous multi-dimensional disturbance is applied to passing materials through dynamic deformation of the multi-dimensional disturbance device, the adhesion and agglomeration states among particles are effectively broken, efficient separation of adhered individuals is achieved, meanwhile, the problem that a traditional rigid structure is blocked or damaged due to extrusion or scraping is solved, and the service life of the device is prolonged. Therefore, a stable, uniform and single-scattered material flow is provided for subsequent material arrangement and high-precision counting.

The utility model provides a powder and particle material transport vehicle. The powder and particle material transport vehicle comprises a tank body and a filtering device. The filtering device comprises a first connecting piece, a second connecting piece and a filtering sieve. The filter sieve is fixedly arranged between the first discharging end and the second discharging end of the first connecting piece, and a plurality of filter holes are formed in the filter sieve. The first connecting piece is detachably connected with the discharging opening in the tank body, and the first connecting piece is detachably connected with the second connecting piece. In the direction from the first feeding end to the first discharging end of the first connecting piece, the aperture size of the first material passing cavity is gradually increased; and in the direction from the second feeding end to the second discharging end of the second connecting piece, the aperture size of the second material passing cavity is gradually reduced. By means of the powder and particle material transport vehicle, impurities in powder and particle materials can be effectively filtered out, cleanliness of the powder and particle materials is guaranteed, and equipment safety and production safety of downstream factories are guaranteed.

The invention provides adsorption type flaky material sorting equipment and a sorting method. The sorting equipment comprises a rotary sorting assembly, adsorption holes are distributed in the sorting assembly, one position of the sorting assembly is provided with a negative-pressure adsorption area, and the other position of the sorting assembly is provided with a zero-pressure desorption area or a positive-pressure desorption area. According to the separation equipment disclosed by the invention, dry-method separation of flaky materials such as mica and particle materials is realized through an adsorption principle by utilizing particle shape difference. And for quartz and mica separation, the separation efficiency is improved, and meanwhile, the pressure of follow-up flotation operation is greatly reduced.

The invention discloses a method for simulating dynamic characteristics of a granular material under high-frequency vibration. The method comprises the following steps: S1, constructing a model; s2, calibrating parameters; s3, performing a static shear experiment; s4, vibration loading; s5, carrying out an orthogonal test; and S6, mechanical property analysis. The simulation system comprises a model construction module, a parameter calibration module, an orthogonal test module, a load application module and a dynamic mechanical property analysis module. The triaxial sample model is constructed based on the discrete element method, the physical characteristics of sample particles can be changed at will, the mechanical characteristics of particle materials under complex working conditions can be simulated by applying vibration with different load characteristics to the model, the test cost is reduced, and the mechanical characteristics of the particle materials under complex working conditions can be simulated by performing microscopic parameter calibration. The test precision and the reliability of the test result are improved.

The utility model discloses a particle material stirrer capable of avoiding material blocking, and relates to the technical field of particle material stirrers, the particle material stirrer comprises a stirring barrel and a lower cover assembly, the bottom of the stirring barrel is provided with the lower cover assembly, the top of the stirring barrel is provided with an upper cover assembly, and the bottom of the upper cover assembly is connected with a stirring assembly. According to the particle material stirrer capable of avoiding material blockage, the lower cover assembly is arranged at the bottom of the stirring barrel, and the structure operation and use of a butterfly valve and an electric hinge frame are utilized, so that effective space closing is realized, flexible operation can be realized to avoid influence on material output, and meanwhile, the phenomenon that the material blockage is caused when the stirring assembly rotates to operate can be avoided. Materials are damaged due to structural staggering between the lower cover assembly and the upper cover assembly, so that the integrity of the materials is guaranteed, the mixing effect of the materials can be guaranteed to the greatest extent due to the structural arrangement of the stirring assembly, the mixing efficiency is improved, and the flange connection among the stirring barrel, the lower cover assembly and the upper cover assembly ensures the structural sealing and convenient maintenance.

The application provides a kind of nanoparticle thickness measurement method based on transmission electron microscopy high-angle annular dark-field image, belongs to the technical field of nanoparticle material.This method includes: the absolute brightness intensity value and thickness value data of standard nanoparticle with same composition and different particle size of the nanoparticle to be measured are collected to construct data set;The standard nanoparticle is regular shape nanoparticle;The relationship function of the absolute brightness intensity value and thickness value of the nanoparticle is established based on the data set;The absolute brightness intensity value of the nanoparticle to be measured is collected by transmission electron microscopy, and the thickness of the nanoparticle to be measured is obtained by the relationship function of the absolute brightness intensity value and thickness value of the nanoparticle.The method effectively avoids the interference of different crystal orientations on the brightness intensity in ordinary transmission mode imaging, and can obtain accurate nanoparticle thickness information.