25 results about "Fluid shear" patented technology

The application relates to the technical field of biological sample pretreatment, and discloses a high-efficiency separation method of a tissue cell extraction device. The method comprises the following steps: performing parameter calibration and reference loss modeling of a driving motor, and eliminating background interference of an actuator; applying a disturbance signal to a dissociation chamber, locking the characteristic resonance frequency of a tissue sample through frequency domain energy analysis, and performing pulsating crushing to accelerate the dissociation of a matrix structure; extracting the net torque of the motor in real time, deducing the fluid dynamic viscosity, adaptively adjusting the motor speed according to the viscosity drop trend, maintaining the fluid shear force in a preset target interval, and avoiding mechanical damage to cells; calculating the mechanical energy dissipation power in real time, and performing feedforward temperature control compensation to eliminate temperature overshoot caused by thermal conduction lag. The application realizes closed-loop control of the physical phase evolution of a heterogeneous tissue dissociation process, solves the limitation of a fixed parameter in a traditional method, shortens the dissociation time, and significantly improves the single-cell yield and survival rate.

This invention discloses a high-strength composite membrane with a multi-barrier structure and its preparation process, belonging to the field of composite membrane preparation technology. It addresses the technical problem that the barrier and tensile properties of existing composite membranes need further improvement. Specifically, it includes the following steps: uniformly coating a carboxyl-rich polysaccharide graft copolymer solution onto the surface of a release PET film, drying it to a moisture content of 15-20% to obtain a matrix layer. This invention sequentially coats carboxyl-rich polysaccharides to construct a highly active matrix, sprays zirconium phytate sol at the interface to induce coordination crosslinking, then coats dopamine-modified MXene and uses fluid shear force to achieve highly parallel orientation of nanosheets. Finally, it removes micropores through segmented vacuum hot pressing and deeply cures the membrane. This integrates interfacial chemical anchoring, forced shear orientation, and thermal coupling densification, constructing a dense three-dimensional interpenetrating barrier network in situ, synergistically improving the tensile strength and gas-liquid shielding performance of the composite membrane.

The application belongs to the technical field of oil detection, and particularly relates to a spinning oil online detection system based on edge computing, which comprises the following steps: obtaining spinning oil frequency shift and energy loss data, fitting to obtain oil film adsorption capacity, viscoelasticity and shear loss modulus, combining microfluidic pressure signal to calculate fluid shear force, constructing a friction energy loss database and normalizing to form a feature vector, fusing with dielectric constant and ion mobility data, extracting interface conductance and molecular motion parameters, establishing a lubrication and charge conduction coupling model, converting the model into a spatial charge density matrix, matching the matrix with time domain data of the yarn tension transient state, calculating a correlation coefficient and generating an antistatic and smoothness coupling evaluation index, fitting a prediction model through multi-temperature and humidity, and outputting a quantitative conclusion to guide the formula and process. Through multi-sensing fusion and edge computing, the application realizes full-dimensional detection and optimization of oil performance, and improves detection precision and production efficiency.

This invention discloses a method and system for emission control of high-salinity wastewater through cascaded evaporation and concentration, relating to the field of intelligent control technology. The method includes: heating the high-salinity wastewater with an external heat source, employing seed deposition and frequency conversion regulation based on a fluid shearing device to perform evaporation and concentration treatment in the precipitated phase state, obtaining a concentrated liquid with low scaling tendency; sequentially flowing the concentrated liquid into a temperature-controlled crystallizer connected in series in a gradient separation unit for temperature control stabilization and gradient separation treatment to obtain the separation result; and multi-threaded transport and post-processing of the various crystalline components and mother liquor based on the separation result. This invention solves the technical problem in existing technologies where the differences in salt composition during high-salinity wastewater treatment are difficult to effectively identify and target, leading to insufficient adaptability and low overall treatment efficiency. It achieves the technical effect of adaptive optimization and adjustment of the treatment path based on changes in salt composition, thereby improving overall treatment efficiency and operational stability.

This invention belongs to the field of water environment monitoring technology, specifically providing a remote operation and maintenance system for water environment quality monitoring equipment. The system includes an alternating measurement and decoupling module, a mutually exclusive collaborative decision-making module, a hydraulic transient suppression and calibration reconstruction module, and a physical mechanism mapping correction module. The alternating measurement and decoupling module acquires signals through three alternating measurements and decouples the equivalent fouling film thickness and probe sensitivity attenuation coefficient based on a joint inversion model. The mutually exclusive collaborative decision-making module generates mutually exclusive control commands accordingly, outputting a timing combination command of cleaning followed by calibration during mixed degradation. The hydraulic transient suppression and calibration reconstruction module calculates the delay time by fitting a hydraulic time constant to the pipeline pressure attenuation data and obtains the reconstructed calibration signal. The physical mechanism mapping correction module updates the fluid shear force mapping coefficient in the joint inversion model by combining the previous and subsequent fouling film thicknesses with the hydraulic time constant. This invention achieves physical separation of the root causes of anomalies and precise mutually exclusive scheduling.

This application discloses a fracture-resistant tensile clamp for a push-pull force gauge, comprising a base, a force gauge, and a clamp. The force gauge is fixed on the base, and the clamp is used to hold the product under test. The base has a slide rail cavity, in which a slider is slidably fitted, and the slider is rigidly connected to the clamp. The slide rail cavity is filled with a non-Newtonian fluid, and the slider has a fluid shear structure. The fluid shear structure causes the non-Newtonian fluid in the slide rail cavity to generate velocity-related flow resistance when the slider moves. The slide rail cavity includes a main working cavity and a secondary compensation cavity that are interconnected, and a fluid channel is provided between the two cavities. This fracture-resistant tensile clamp for a push-pull force gauge, through the buffering effect of the non-Newtonian fluid and the shear structure, combined with the main and secondary cavity structure of the slide rail cavity, can effectively protect the clamp and equipment under various actual testing conditions, especially when facing sudden tensile impacts. It also has good compatibility with the tested products, and has significant practical value and promotional significance.

This invention relates to the field of food and beverage processing machinery, specifically a degassing device for fruit juice production. It comprises a vacuum degassing tank, a variable frequency drive motor, a central feed pipe, a rotating umbrella-shaped film-forming disc, a streamlined impact turbulence ring, and an adaptive control module. The device utilizes the central feed pipe in conjunction with the rotating umbrella-shaped disc to spread the fruit juice into a liquid film through centrifugal force. The adaptive module calculates the dynamic shear resistance of the fruit juice based on the effective working current, thereby adjusting the motor speed in real time. Its core principle is to generate fluid shearing and reversal effects by impacting the streamlined turbulence ring with the high-speed liquid film, effectively tearing apart the fruit fiber network that encapsulates the air bubbles, allowing the microbubbles to escape rapidly in a vacuum environment. This invention avoids complex flow channel structures, solving the problems of easy clogging and material residue, reducing cleaning frequency, and significantly improving degassing efficiency.

The present application relates to seawater desalination system equipment technical field, specifically, it relates to the bactericide performance rapid detection device and method for seawater desalination, including flow velocity simulation pipe, the fixed mechanism of setting at its outside, the drive mechanism and injection mechanism of setting in fixed mechanism inside.The bactericide performance rapid detection device and method for seawater desalination, flow velocity simulation pipe connects external water pump to reproduce the fluid shear force and residence time in actual seawater desalination system, injects medicament in dynamic environment through injection mechanism, and cooperates with electromagnetic valve timing collection water sample, so that the bactericide performance data obtained compared with traditional static beaker experiment, more accurate detection medicament in actual seawater desalination pipeline system real effect.

This invention discloses a combined catalytic cracking-catalytic slurry directional treatment device, belonging to the field of petroleum refining and chemical solid-liquid separation, including a shell; the shell is internally fixed with a first partition and a second partition, which divide the interior of the shell into three independent chambers: upper, middle, and lower. The first and second partitions are respectively provided with a first through hole and a second through hole. A first partition and a swirl section are arranged between the middle and lower chambers. The catalytic slurry first undergoes centrifugal pre-sedimentation in the lower chamber, so that the highly abrasive large particles of catalyst are preferentially discharged from the bottom discharge port, reducing the mechanical wear of the subsequent filtration structure. The overflowing slurry containing fine particles enters the middle chamber and is guided by multiple spiral blades provided on the adjacent walls of the guide section and the filter section, so that the slurry generates swirling flow and forms a continuous fluid shear force on the outer surface of the filter screen, dynamically stripping away the colloids and asphaltenes that may be deposited on the microporous surface.

This invention discloses a ferrite magnetic powder material and its preparation method that induces oriented alignment through wet ball milling, belonging to the field of new materials technology. The method addresses the problem that traditional wet ball milling cannot induce preferred grain alignment due to the isotropic nature of mechanical action. A coarse ferrite powder slurry is injected into a dedicated ball milling device. During the milling process, a rotating magnetic field is simultaneously applied and the grinding chamber is rotated to form a directional fluid shear field. A closed-loop control system maintains a fixed phase difference between the rotating magnetic field vector and the local fluid velocity vector, achieving spatiotemporal synchronization. Simultaneously, the slurry rheological properties, medium filling rate, and process parameters are precisely controlled. This magnetic powder exhibits significantly enhanced response capabilities in subsequent magnetic field orientation pressing, effectively improving the remanence of the final sintered magnet and reducing coercivity fluctuations, with excellent batch-to-batch consistency in magnetic properties.

The utility model discloses a frame type stirrer with turbulence generating structure relates to frame type stirrer technical field, including motor, the below of motor is provided with stirring mechanism for realizing stirring turbulence, and stirring mechanism includes: turbulence unit, dismounting unit, sets up in the inside of turbulence unit, including earth character block and insert block, first inclined plate and second inclined plate are fixedly installed between earth character block and insert block, and first inclined plate and second inclined plate are between upper and lower laminated mounting, through setting first inclined plate and second inclined plate upper and lower laminated and leaving gap in dismounting unit, make the fluid to be stirred form strong turbulence when passing, and effectively enhanced fluid shear and dispersion effect. This structure is especially applicable to low viscosity fluid, overcomes the problem of low energy transmission efficiency of traditional smooth paddle, and the stirring efficiency and mixing quality are improved significantly, and the whole structure is reasonable, and the stable turbulence generation is realized conveniently.

The application discloses a kind of polymeric rosin resin UV vacuum electroplating layer preparation equipment, comprising: preparation kettle main body, including kettle body, interlayer, resin feed cylinder, liquid feed pipe;Stirring assembly, including being set in the upper stirring motor of kettle body top middle part, the lower end of upper stirring motor is provided with upper stirring rod, and a plurality of shear shafts are provided on upper stirring rod;Lower screw belt structure, including upper follow-up frame, the bottom of kettle body is provided with lower stirring motor, and the upper end of lower stirring motor is connected with the lower stirring rod that is connected with upper stirring rod, and the outside of lower stirring rod is provided with screw belt group;Middle link component that is sleeved in the outside of upper follow-up frame and screw belt group, including the outer fastener that connects upper follow-up frame and screw belt group, and the upper and lower ends of outer fastener are connected with cutting piece, the application not only can let the wall scraping effect of screw belt be prolonged from bottom to top, and can be to middle fluid shear, let the bubble of fluid middle part be discharged upwards, so as to improve the adhesion of plating layer and substrate.

A kind of preparation of superfine powder double helix spiral groove induction type impinging stream reaction kettle, it is related to a kind of preparation of superfine powder reaction kettle device.The reaction kettle main body is closed cavity, feed pipe is arranged on the nozzle of reaction kettle main body two sides;Impinging area is located in the center position of reaction kettle main body;The device is arranged in the lower part of reaction kettle impinging area arc baffle, and spiral groove is arranged in the bottom of double curved wall, enhances fluid shearing effect, realizes the efficient preparation of superfine powder.First, after the impingement of two reaction solution, the radial jet impact arc baffle formed by the impingement of two reaction solution, forms high-speed impact jet;Flow into the groove of the bottom wall of double curved surface, and the groove is strengthened by special wall structure to strengthen fluid mixing and control.Double curved bottom wall groove guides fluid orderly flow, prolongs mixing time, strengthens mixing and reaction effect, and is beneficial to improve reaction efficiency.Reaction solution is impacted again by baffle after impingement in impinging area, effectively enhances the turbulent degree of fluid, improves the fluid mixing efficiency, provides more ideal environment for reaction, and can be used in fine chemical industry and biological pharmacy etc.

The application discloses a kind of based on the continuous preparation method of microcapsule of multi-channel array and supercritical antisolvent synergism. The method is that raw material mixture of flavoring substance and wall material polymer is pumped into microchannel unit by specific flow ratio with supercritical CO2 simultaneously, and antisolvent crystallization is carried out in the microchannel unit which is composed of at least one microchannel module. The microchannel module contains 132 parallelly arranged microchannels with inner diameter of 50-300 μm, length-diameter ratio of (50-350):1, and the inner surface of the channels is hydrophobically modified (contact angle >110°). By the geometric structure design of the above-mentioned microchannel array, the mass transfer process and fluid shear force of supercritical fluid in the confined space are precisely controlled under the process conditions of 8-15 MPa and 35-55℃, so as to control the nucleation and growth kinetics of wall material crystallization, and realize the continuous, efficient and stable preparation of microcapsules with uniform particle size (D50 is 50-200 nm, PDI <0.2), high encapsulation efficiency (>95%) and high oil loading (>30%).

The present application relates to the technical field of decorative paper processing, and specifically relates to a high-speed precise slitting system and process for decorative paper based on double air plate deviation correction, which comprises an air floatation flow stabilization unit, a visual detection unit, a differential pressure air floatation deviation correction unit, a negative pressure dust removal unit and a zero-gap slitting unit. The present application overcomes the technical drawbacks of traditional mechanical deviation correction systems, such as large inertia, response lag and easy scratching of the paper surface. The present application uses the dynamic pressure difference of left and right air chambers to build a transverse fluid shear force to drive the paper band to reset, which improves the deviation correction response speed from hundreds of milliseconds to milliseconds, and the whole process is contactless and suspended, which effectively protects the delicate printing layer of the decorative paper. In combination with the sub-pixel visual filtering algorithm and the unique synergistic negative pressure dust removal mechanism, not only the vibration interference and static dust pollution under high-speed operation are eliminated, but also energy-saving dust removal is achieved by using the overflow air flow of the air plate. Finally, through the zero-gap knife edge cutting and slip difference shaft tension compensation, the secondary shaking in the free span is eliminated.

The application discloses an economic hybrid transmission structure, comprising a box, an inner cavity is formed in the box, an oil discharge pipe is arranged through the bottom of the inner cavity, an oil outlet pipe is fixedly connected to one end of the oil discharge pipe, and a filtering mechanism is fixedly connected to the other end of the oil outlet pipe. When the transmission is lubricated, the second oil pump sends clean oil in the filtering box to the spraying mechanism, and the oil is sprayed from the spraying hole through the inner cylinder and the oil inlet groove. The air inlet hole introduces air to make the oil form an atomized state; the obliquely arranged spraying hole drives the outer cylinder and the rotating shaft to rotate by means of the fluid shear force generated by the jet flow, the roller moves along the meandering groove and drives the control cylinder to reciprocatingly lift and lower. The movement of the control cylinder changes the conduction area of the oil inlet groove, dynamically adjusts the oil quantity and the spraying intensity, and can complete precise differential atomization lubrication on the transmission components at different positions and different distances in the box.

The utility model belongs to water treatment field especially relates to honeycomb guide plate pretreatment dilution device. The utility model provides honeycomb guide plate pretreatment dilution device, include: cylinder, both ends of cylinder are open setting; flow guide mechanism, be located in the inner chamber of cylinder, be used for the flow guide processing of fluid, flow guide mechanism includes: cylinder, be located in the inner chamber of cylinder, a plurality of equidistance distribution's honeycomb flow guide hole is seted up on the cylinder, and the aperture of a plurality of honeycomb flow guide hole is decreasing along the flow direction from the entry end to the export end, spiral groove, set up in the inner wall of honeycomb flow guide hole, through the aperture along the flow direction decreasing design cooperation inner wall spiral groove, can change the limitation that traditional equal diameter cavity channel flow rate is even, enhances fluid shear force and turbulence excitation, promotes the microscopic mixing evenness of original fluid and dilution medium, reduces local concentration deviation, guarantees the stability of subsequent procedure.

The present application relates to the technical field of metal rolling equipment, and particularly relates to a rolling oil regulating assembly, a cold rolling equipment and a use method thereof. In view of the problems of the decrease of atomization quality and the stratification of emulsion caused by flow fluctuation in variable-width rolling, the original micro-crack of the edge of the steel strip inducing strip breakage, and the accumulation of oil-containing iron powder at the cleaning scraper and the difficulty in falling off, the present application realizes stepless physical truncation of the spraying width under the premise of maintaining constant spraying pressure by means of the built-in piston type variable-volume cavity cooperating with the in-tube staggered disc structure, and forcibly emulsifies by using fluid shear force; V-shaped groove extrusion rollers are arranged on both sides of the equipment to exert lateral plastic extrusion force on the edge of the steel strip, to physically close the micro-cracks and to pre-set the compressive stress layer; the cleaning unit adopts a rotating magnetic suction cylinder combined with a cam vibrating and beating scraper structure to destroy the adhesion of the oil sludge and cooperate with negative pressure suction. The device effectively solves the problems of lubrication consistency under variable conditions, edge crack propagation and cleaning mechanism self-cleaning.

This invention discloses an atmospheric pressure leaching device and method for high-grade nickel matte, relating to the field of metallurgical technology. The atmospheric pressure leaching device includes an atmospheric pressure leaching structure and a slurry concentration structure. The atmospheric pressure leaching structure comprises two atmospheric pressure leaching sections with opposing connecting ends, and each section has multiple atmospheric pressure leaching tanks. These tanks are sequentially connected within the same atmospheric pressure leaching section to form a multi-stage leaching section. The slurry concentration structure includes a concentration unit body and a fluid shearing unit. The concentration unit body is located between the two connecting ends for sedimentation and concentration of the slurry. The fluid shearing unit is located at the bottom of the concentration unit body to increase the concentration of the slurry underflow at the bottom of the concentration unit body. This invention, through the multi-stage leaching section and slurry concentration structure, effectively improves the slurry leaching effect and quality.

The application belongs to the technical field of oil detection, and particularly relates to a spinning oil online detection system based on edge computing, which comprises the following steps: obtaining spinning oil frequency shift and energy loss data, fitting to obtain oil film adsorption capacity, viscoelasticity and shear loss modulus, combining microfluidic pressure signal to calculate fluid shear force, constructing a friction energy loss database and normalizing to form a feature vector, fusing with dielectric constant and ion mobility data, extracting interface conductance and molecular motion parameters, establishing a lubrication and charge conduction coupling model, converting the model into a spatial charge density matrix, matching the matrix with time domain data of the yarn tension transient state, calculating a correlation coefficient and generating an antistatic and smoothness coupling evaluation index, fitting a prediction model through multi-temperature and humidity, and outputting a quantitative conclusion to guide the formula and process. Through multi-sensing fusion and edge computing, the application realizes full-dimensional detection and optimization of oil performance, and improves detection precision and production efficiency.

The application discloses a high-efficiency combined stirring kettle for automobile brake fluid, which comprises a stirring tank body, a placing rack is fixedly sleeved on the surface of the stirring tank body and is placed on the ground, a main shaft assembly is rotationally connected to the top end of the stirring tank body, the bottom end of the main shaft assembly extends to the inside of the stirring tank body, and a driving assembly for driving the rotation of the main shaft assembly is fixedly installed at the top end of the stirring tank body and corresponds to the main shaft assembly. The application realizes multi-dimensional composite stirring, significantly improves mixing uniformity and efficiency, and forms complex and multidirectional fluid shearing and convection in the stirring tank body through the combined motion of the revolution of the stirring blade driven by the main shaft and the rotation of the stirring blade driven by the driven assembly. The dynamically changing stirring mode can effectively break the local mixing dead angle, prevent stratification or uneven dispersion caused by the density and viscosity difference of components, is particularly suitable for materials such as brake fluid which are compounded by multiple additives, and ensures the high uniformity and stability of product components.

This invention belongs to the field of submersible pump processing technology, specifically a production equipment for a mechanical seal-less submersible pump and its static seal. It solves the problems of wear and failure of existing mechanical seals during long-term operation and avoids the daily maintenance and upkeep required for conventional mechanical seals. The submersible pump includes a support, pump body, motor, pump shaft, static seal, and leakage return structure. The production equipment includes a CNC lathe and a tool holder. The tool holder has a heat dissipation mechanism that absorbs heat from the tool tip during turning and controls the temperature below the material's thermal expansion critical point. The vibration-resistant mechanism includes a bearing plate and a laser displacement sensor. The housing is filled with silicone oil. Piston plate I, piston plate II, and a sliding rod suspend the mounting frame in the silicone oil. Vibration energy is dissipated through fluid shear friction of the silicone oil. This submersible pump can effectively recover leaked media. The production equipment avoids interference from machining thermal deformation and vibration on measurements, meeting the processing requirements of high-precision static seals.

The application discloses an iterative optimization method of rheological parameters of a yield stress viscous fluid, and comprises the following steps: acquiring shear parameters of a coaxial rotary rheometer, calculating shear stress and shear deformation rate of fluid on a rotor surface by using the shear parameters, and calculating a lower limit and an upper limit of a yield stress value of the viscous fluid to be measured; taking an average value of the lower limit and the upper limit of the yield stress value as a predicted yield stress of the viscous fluid to be measured, and calculating a shear radius corresponding to each rotor speed; recalculating shear deformation rates of fluid on the rotor surface under each rotor speed to re-fit and correct the yield stress of the viscous fluid to be measured, iteratively calculating, and taking a fitting parameter of a final rheological model as a rheological parameter of the viscous fluid to be measured. The optimization method can continuously correct rheological parameters such as a shear radius range and a shear deformation rate of the viscous fluid, and can improve the calculation accuracy of the rheological parameters and is reliable.

The utility model discloses a low temperature fermentation tank with temperature control function relates to fermentation tank technical field, include: support, jar body, control box, aeration system, jacket, coil heat exchanger, stirring device and sensor assembly etc., the utility model discloses through the jacket and the double cooling system of coil heat exchanger can be in the fermentation heat production peak period such as logarithmic growth period quick start coil cooling, and the jacket is responsible for basic cooling, and the coil is supplementary, avoids the cooling delay problem of traditional single path only jacket or only internal coil, and then through low -speed drive motor reduction stirring speed can significantly reduce fluid shear force, avoid the microbial cell membrane rupture such as mammalian cell, filamentous fungi caused by high -speed stirring, improve the living bacteria rate and product yield, finally through the sensor deployment in the inner container inner wall different height and orientation, real -time monitoring jar body upper, middle, lower each layer temperature, avoid the local overheating or supercooling caused by the uneven heat distribution.