20 results about "Particle suspension" patented technology

The invention discloses an ultrasonic abrasive flow surface texture machining device and method based on an auxiliary magnetic field, and belongs to the field of precision machining and surface engineering. The ultrasonic abrasive flow surface texture machining device comprises a workbench, an ultrasonic vibration generating device, a magnetic field generating device, an abrasive flow machining system and a three-dimensional motion platform. The composite abrasive particle suspension is composed of a basic solution, carbonyl iron powder magnetic particles and silicon carbide abrasive particles. According to the method, magnetic particles are guided by a magnetic field to form a chain along magnetic lines of force, ultrasonic high-frequency impact is combined, abrasive materials are driven to impact the surface of a workpiece in order, a submicron texture with the consistent direction and the uniform size is formed, the depth ranges from 0.2 micrometer to 2 micrometers, and the width ranges from 1 micrometer to 20 micrometers. Texture parameters are flexibly regulated and controlled through magnetic field and ultrasonic parameters, and the method has the advantages of being high in machining precision, high in controllability, low in cost, environmentally friendly and recyclable, is suitable for precise parts of bearings and cutters, and can remarkably improve the tribological performance and wettability of the parts.

This invention relates to a particle-polymer aggregate composite oil displacement agent and its application. The oil displacement agent of this invention comprises: (A) a particle suspension containing particles and water, wherein the mass fraction of the particles is 200-2000 ppm; and (B) a polymer solution containing a polymer and water, wherein the mass fraction of the polymer is 0.01-10 ppm, and the polymer is one of the following: (B1), (B2), or (B3): (B1) an ionic polymer, wherein the ionic polymer is a cationic or anionic polymer, wherein the charge of the ionic groups on the polymer molecular chain is opposite to the charge of the particle surface; (B2) a mixture of cationic and anionic polymers; (B3) a naturally aged nonionic polymer. The oil displacement agent of this invention is low in cost, easy to inject, has a high sealing effect, and good oil displacement effect.

The invention relates to a solid fuel combustion characteristic test technology, and aims to provide a focusing single particle suspension variable atmosphere ignition combustion experiment device and method. A second microporous plate and a feed hopper are arranged at the top of a combustion chamber main body of the device, and a first microporous plate and a gas buffer cavity are arranged at the bottom; the two laser emitters are arranged in an included angle shape, and the energy of a single laser beam is lower than a fuel particle ignition threshold value; the two paths of laser intersect in the central area of the cavity to form a space energy focus, and the superposed energy of the two beams of laser can be absorbed at the position to reach an ignition threshold value; and light paths of diagnosis equipment in the optical acquisition module are intersected in a focus area. According to the invention, through a strategy of airflow disturbance and microwell plate blocking, particles completely move in airflow; the ignition behavior has spatial selectivity, the success rate is high and controllable, and the research is closer to the actual application scene. Through the design of single-particle fixed-point triggering, the system complexity and the control difficulty can be reduced, and the operation stability and the experiment repeatability can be improved.

The application provides a preparation method of a porous material loaded with mixed microorganisms, comprising the following steps: S1, preparation of a mixed bacteria suspension; S2, preparation of an activated sludge porous material; and S3, preparation of a porous material loaded with mixed microorganisms. The application also provides a preparation method of an oil-wetting and water-repellent activated sludge porous material loaded with microorganisms, which comprises spraying a hydrophobic silica particle suspension on the porous material loaded with mixed microorganisms to obtain a modified material which is oil-wetting and water-repellent. The porous material loaded with mixed microorganisms and the oil-wetting and water-repellent activated sludge porous material loaded with microorganisms can effectively degrade medium and long chain alkanes in oil, especially n-hexadecane.

The invention belongs to the field of nano-films, and particularly relates to a preparation method and application of a high-stability super-hydrophobic SiO2 antireflection film, and the preparation method comprises the following steps: obtaining a hollow SiO2 nano-particle suspension, modifying and dispersing a ZSM-5 molecular sieve, preparing composite sol, etching and modifying, and preparing, coating and modifying the sol with low surface energy. According to the invention, the design of a molecular sieve in-situ embedded composite structure is used for reference, and a hollow SiO2 modification process is combined, so that the synergistic improvement of the anti-reflection performance, the super-hydrophobic performance and the structural stability is realized.

The invention discloses a particle patterning control device and method based on a multi-mode sound field in a capillary tube. Comprising the steps that particle suspension liquid is injected into a capillary tube, a piezoelectric transducer is arranged on the outer side of the capillary tube, and the piezoelectric transducer is acoustically coupled with the outer surface of the capillary tube; applying an electric signal to the piezoelectric transducer, using the piezoelectric transducer to excite the two-dimensional acoustic resonance mode of the capillary tube, so that a corresponding bulk acoustic wave field is generated in the capillary tube, and the particles in the capillary tube are distributed according to the sound field gradient of the bulk acoustic wave field to form a particle pattern; and manipulating the particle pattern by modulating the excitation frequency or the structure of the capillary. According to the device and the method disclosed by the invention, various complex and stable particle aggregation patterns including circles, ellipses, other high-order modes and the like can be formed in the capillary tube.

The invention belongs to the technical field of chemical equipment monitoring and control, and particularly relates to a method for detecting the suspension effect of particles in a stirring reactor, which comprises the following steps: preparing fluorescent beads with different sizes; liquid is injected into the stirring reactor, all the fluorescent beads are put into the liquid, and the liquid is stirred through a stirrer; the stirring reactor is irradiated by an ultraviolet lamp, so that the fluorescent beads in the stirring reactor emit fluorescence; a real-time monitoring module is adopted to collect images of the small fluorescent balls in the stirring reactor; analyzing the fluorescent ball image to obtain a motion track, an instantaneous rate and a direction of the fluorescent ball; obtaining the suspension effect of the particles in the liquid according to the motion trail, the instantaneous rate and the direction of the small fluorescent balls; through the high-speed camera and the intelligent image processing module, the particle suspension state can be captured in real time, and the detection efficiency is remarkably improved.

This invention relates to the field of jelly production technology, specifically to a process for producing whole-fruit pulp jelly, comprising the following steps: cooking the liquid; preparation: preparation is carried out when the liquid temperature drops to 85℃-87℃, with soluble solids controlled at 16.0±0.5% and pH value between 3.8 and 4.1; filling: filling is completed within 60 minutes after preparation, with the liquid temperature at the filling machine outlet not lower than 75℃, and fruit pulp-containing contents are added during the process. This invention pre-coats whole fruit pulp (such as lychee) with a pH-sensitive colloid, such as low-methoxyl pectin, before filling. After filling, the local pH value on the surface of the whole fruit pulp drops to 3.3-3.5. Combined with the diffusion and migration of calcium ions in the liquid, this triggers the pH-sensitive colloid, such as low-methoxyl pectin, to produce a pre-gel, which significantly reduces the interfacial voids between the fruit pulp and the jelly gel body, improving the standardization of the fruit particle suspension position.

The invention relates to a particle suspension shear rheological prediction method based on pressure control, and the method comprises the steps: S1, obtaining reference data, constructing a simulation model, and verifying the simulation model; s2, different grading samples are constructed, multi-working-condition coupling simulation is carried out, mu-Iv data is obtained, preprocessing and unified sampling are carried out, and an original data set is established; s3, constructing and training a random forest shear rheological prediction model, performing hyper-parameter optimization, and performing forward prediction to output a mu-Iv curve; s4, an Iv partition rheological model is established and verified, a target working condition demand and constraint condition input module is constructed, a reverse solution module of target reverse design is constructed based on the forward prediction model in the S3, grading optimization is carried out, and a comprehensive optimal solution scheme is output; and S5, an output result in the S4 is substituted back to the CFD-DEM coupling simulation model for verification, closed-loop correction is carried out, and a traceable data file is formed. According to the method, a fine particle / coarse particle addition amount or proportion adjustment amount grading optimization scheme is output.

This invention provides a countercurrent particle suspension reactor, belonging to the field of chemical reactor technology. It includes a reaction body zone, a feeding zone, and a receiving zone. Particles enter the reaction body zone from the feeding zone, moving downwards. Airflow enters the reaction body zone from the receiving zone, moving upwards. Within the reaction body zone, the particles and airflow form a countercurrent, slowing the particle descent and allowing them to participate in the reaction. After the reaction, the particles enter the receiving zone for collection. By using countercurrent flow, the residence time of particles in the reaction body zone is extended, avoiding backmixing, agglomeration, and other undesirable behaviors within the reactor. This reactor can be used for both solid and liquid particles. The countercurrent particle suspension reactor provided by this invention solves the problems of short particle residence time and undesirable behaviors such as backmixing, agglomeration, and coalescence within the reactor in existing technologies.

The invention belongs to the field of particle suspension evaporation, and relates to a particle suspension evaporation method and system based on a vibration substrate. According to the method, particle suspension liquid drops are deposited on a vibration substrate, and the substrate is driven to generate periodic vibration with specific frequency and amplitude, so that the liquid drops enter a resonance state. Under the resonance condition, complex convection is formed in the liquid drops, single circulation driven by evaporation is broken, the trend that particles continuously migrate to the edge is remarkably weakened, and therefore the coffee ring effect is effectively restrained. Compared with the prior art, the method has the advantages that the structure is simple, the operation is convenient, uniform deposition of particles can be realized without adding a surfactant or special surface modification, and the method has good universality and wide application prospect, and is suitable for the fields of biological detection, ink-jet printing, functional coating, micro-nano device manufacturing and the like.

A mixing technique and associated apparatus design that generates fluid flow within a fluid bag, reducing the accumulation of particles that may settle from a suspended state. The mixing system supports a flexible bag that holds the fluid to be mixed and engages with a paddle mechanism. The paddle mechanism is positioned so that the paddles are located near the bottom edge of the flexible bag, extending only partially across the bag and engaging with a portion of the bag. By activating the paddle mechanism to perform iterative displacement and release cycles, a recirculating flow of the fluid inside the bag is generated.

The present application belongs to the field of chemical equipment monitoring and control technology, and particularly relates to a kind of detection methods of particle suspension effect in stirred reactor, comprising: preparing fluorescent small balls of different sizes;Liquid is injected into the stirred reactor, all fluorescent small balls are put into the liquid, and the liquid is stirred by the stirrer;The stirred reactor is irradiated by using ultraviolet lamp, so that the fluorescent small balls in the stirred reactor emit fluorescence;The real-time monitoring module is used to collect the image of the fluorescent small balls in the stirred reactor;The fluorescent small ball image is analyzed to obtain the motion trajectory, instantaneous speed and direction of the fluorescent small balls;According to the motion trajectory, instantaneous speed and direction of the fluorescent small balls, the particle suspension effect in the liquid is obtained;The high-speed camera and intelligent image processing module can capture the particle suspension state in real time, which significantly improves the detection efficiency.

A method of evaluating performance of a flow cytometer configured to use two or more kinds of calibration particles having different morphologies in combination, the method including: a first sorting step in which the flow cytometer as an evaluation target sorts the calibration particles from each other based on a first optical property; a second sorting step of sorting the calibration particles from each other based on a second optical property that is sortable at a spatial resolution lower than a spatial resolution at which the first optical property is sortable; and an evaluation step of evaluating one or both of particle sorting performance and resolution of the flow cytometer based on a first sorting result evaluated in the first sorting step and a second sorting result evaluated in the second sorting step.

The present invention relates to an injectable suspension or emulsion of magnetite nanoparticles coated with an organic layer, which can be used for the treatment of solid tumors.

According to the particle suspension provided by the invention, the short-chain polycation peptide is used for replacing a traditional polyether or protein type dispersing agent, and meanwhile, a dynamic hydrogen bond layer is formed by the short-chain polycation peptide and ectoine, so that the overall anti-sedimentation and anti-salt capability is improved, and the particle suspension is stable in performance while low viscosity is maintained. The dispersion uniformity and optical signal stability of the fluorescent microspheres are remarkably improved, and a new particle suspension is obtained on the basis and has the particle storage characteristics of good dispersity, stable optical signals and long-term storage stability.

The utility model discloses a device for measuring the suspension stability of aggregate particles in a low-viscosity asphalt material, which comprises a storage cylinder for storing an asphalt material to be measured; the sensor assembly comprises a first metal sensor and a second metal sensor which are arranged in the length direction of the storage barrel; the testing assembly is arranged at one end of the storage cylinder and comprises a metal ball and a testing element capable of storing and releasing the metal ball; the timing element is electrically connected with the sensor assembly and records the time of signals sent by the first metal sensor and the second metal sensor. According to the device disclosed by the utility model, the oneness that the storage stability of aggregate particles in a low-viscosity asphalt material is represented by a viscosity index is avoided, and the suspension stability of the aggregate particles in the low-viscosity asphalt material is represented by directly adopting the passing time of the metal balls; stability change caused by chemical reaction and viscosity change in the long-term storage process is totally counted through steel ball passing time, and the method is simple and direct.

The present application relates to a kind of fragile, thin-walled part surface organic contaminant cleaning method, comprising the following steps: the sample to be cleaned is placed into graphite phase carbon nitride particle suspension;The graphite phase carbon nitride particle suspension with the sample to be cleaned placed is carried out dark reaction in lightless condition, so that graphite phase carbon nitride particle is contacted with the sample to be cleaned;The graphite phase carbon nitride particle suspension contacted with the sample to be cleaned is carried out light reaction under light condition, wherein, graphite phase carbon nitride particle suspension produces superoxide radical and hydroxyl radical under light condition, and superoxide radical and hydroxyl radical oxidize the organic contaminant on the surface of the sample to be cleaned into carbon dioxide and water;The residual graphite phase carbon nitride particle on the surface of the sample to be cleaned is cleaned away.The cleaning method will not cause damage to the part, nor will it cause the destruction of the surface microtopography of the part;Graphite phase carbon nitride is simple, inexpensive, environmentally friendly, and has no secondary pollution.

The utility model relates to shampoo production equipment technical field, concretely relates to a kind of silicon oil-free plant particle suspension stirred tank, it includes: stirring tank body and stirring mechanism, the bottom of stirring tank body is connected with the fixed discharge valve, and the top of stirring tank body is fixed with fixed frame, and stirring mechanism is set on stirring tank body.The utility model in the present application, by being provided with stirring mechanism on stirring tank body, and by starting drive motor, rotation is carried out using drive motor gear three, and gear three is engaged with gear one and gear ring, so that rotating shell, multiple stirring plate, rotating cylinder and multiple stirring rod are rotated, multiple stirring plate and multiple stirring rod are rotated using, to facilitate the stirring mixing of shampoo material, and the rotating direction of stirring rod and stirring plate is opposite, and the rotating speed is different, so that shampoo material is bidirectional stirred, so that the shear force received by shampoo material in stirred tank will increase, and then accelerate the dispersion and mixing of shampoo material.