20 results about "Gravitational sedimentation" patented technology

The invention discloses a method suitable for extracting extracellular small vesicles in fresh water pearl shell tissue waste liquid, which comprises the following operation steps: (1) solid-liquid separation: slaughtering pearl shells, and filling slaughtering waste liquid into a waste liquid crude extraction device; (2) waste liquid crude extraction: performing multi-stage gradient filtration and gravity settling on the slaughtering waste liquid by using a waste liquid crude extraction device to obtain clarified waste liquid; (3) removing impurities: removing impurities for the first time and removing impurities for the second time; (4) concentration of the extracellular vesicles: concentrating the extracellular vesicles by using an ultra-speed centrifuge to obtain a high-concentration extracellular vesicle solution; and (5) preservation of extracellular vesicles: according to the final volume of the high-concentration extracellular vesicle solution obtained in the step (4), carrying out sample standardization through protein concentration, sub-packaging the sample, and carrying out long-term preservation in a low-temperature environment. The particle sizes of the extracted vesicles are concentrated, high-purity and complete extracellular small vesicles can be obtained, and the method is suitable for biomedical research and product development.

The invention relates to the technical field of chemical production concentration and purification, and discloses a potassium hydroxide concentration and refining process and device, the potassium hydroxide concentration and refining process comprises a shell, the shell is internally provided with a concentration assembly for concentrating a multi-stage clarified solution, and the top end of the shell is provided with a water inlet pipe communicated with an inner cavity space. According to the equipment, all parts in a concentration assembly are matched, and a gravity water supply principle is formed by utilizing the liquid level difference between a water inlet pipe and an overflow port, so that a solution sequentially flows through a first-stage middle cavity to realize primary slow flow sedimentation, secondary slow flow collection under the guidance of a water guide conical barrel and spiral slow flow separation of an inner conical barrel and a spiral strip sheet; finally, multi-stage clarification and refining of the solution are completed, the purpose of removing impurities with different particle sizes in the solution is achieved, the impurities with different particle sizes can be separated in a targeted mode through cooperation of stage slow flow and gravity settling, the refining purity of the potassium hydroxide solution is remarkably improved, and the problem that impurities are not thoroughly removed due to a single clarification structure is solved.

The present application relates to the technical field of platelet concentration, in particular to a platelet concentration method and system based on gravity sedimentation, comprising the following steps: obtaining sedimentation path unit parameters and collecting speed difference values, screening staggered difference point and judging acceleration trend, extracting decreasing curvature difference to determine boundary, adjusting inclination angle to collect speed change rate and screen falling path, calculating vector to establish extraction path to obtain secondary concentration data. In the present application, by extracting sedimentation speed difference value and acceleration change trend, the layered boundary area is identified, the positioning accuracy of the concentration limit is improved, based on the inclination disturbance induced dynamic response, the path unit with outstanding speed rising rate is screened, the perception ability and layered clarity of the limit area are enhanced, with the help of speed vector direction and center position calculation, a stable linear extraction path is constructed, efficient recovery and focused extraction of trace platelets are realized, the precision, stability and reuse efficiency of platelet concentration are improved, and it is suitable for complex sample conditions.

The utility model provides a gas-solid separation system for flammable and explosive gas dust, which comprises a gravity settling device, a gas inlet pipe is arranged on one side of the gravity settling device, and the other side of the gravity settling device is communicated with a cloth bag dust removal device through a connecting pipeline. Collecting mechanisms are arranged at the bottoms of the gravity settling equipment and the cloth bag dust removal equipment, conveying mechanisms are arranged at the bottoms of the collecting mechanisms, negative pressure mechanisms are arranged on one sides of the collecting mechanisms, and balancing parts and pressure gauges are arranged on the outer sides of the gravity settling equipment and the cloth bag dust removal equipment. The gas-solid separation system for the flammable and explosive gas dust solves the problems that when the existing gas-solid separation equipment is used for treating the dust separation of the flammable and explosive gas, the potential safety hazard is high, the separated solid dust is inconvenient to treat, and the blockage phenomenon is easy to occur in the solid dust discharging process.

The invention relates to a wet-type rotary precise sample separation device and method for marine sediment particle size analysis. The wet-type rotary precise sample separation device comprises an anti-sedimentation sample injection unit, a rotary sample separation unit and a driving unit, the anti-sedimentation sample introduction unit comprises a sample introduction funnel and a dynamic homogenizer arranged in the sample introduction funnel, and a liquid outlet is formed in the bottom of the sample introduction funnel; the rotary sample separation unit is positioned below a liquid outlet of the anti-sedimentation sample injection unit and comprises a distribution disc capable of rotating around a vertical axis, and at least two stations for accommodating receiving containers are arranged on the distribution disc along the circumferential direction; and the driving unit is in transmission connection with the distribution disc and is used for driving the distribution disc to rotate. The device is compact in structure, easy and convenient to operate and high in sample separation precision, the influence of gravity sedimentation on sampling uniformity can be overcome in a mechanical mode, and it is ensured that each trace sample separated from original suspension liquid is highly consistent with an original sample in particle size composition, so that the requirement for high-precision laser particle size analysis is met.

The invention discloses separation treatment equipment based on animal cleaning wastewater, and relates to the technical field of wastewater treatment. The equipment comprises a data acquisition and preliminary analysis module, a depth detection and proportion determination module, a process type judgment module, a process parameter determination module, a calibration factor acquisition module, an execution sequence generation module and an adaptability verification module. The method comprises the following steps: collecting wastewater sample data in real time through a sensor array, and identifying the distribution proportion of protein and grease in combination with high-resolution spectrum scanning and zeta potential analysis; according to pollutant characteristics, process types such as microporous membrane filtration or gravity sedimentation are intelligently selected, and parameter combinations are matched and optimized based on a process parameter database; the chemical bonding strength is further analyzed through XPS to obtain a calibration factor, and an automatic execution sequence is generated. The efficient and accurate separation of the animal cleaning wastewater with complex components is realized, the treatment efficiency is remarkably improved, and the toxic influence is reduced.

This invention discloses a device for preparing and storing high-quality hydrogen, including a hydrogen production unit, a drying unit, a control unit, and a hydrogen storage unit. A shut-off valve is installed on one of the pipelines and is electrically connected to the control equipment for regulating the on / off state and flow rate of oxygen delivery. This invention constructs a dual gas-liquid separation mechanism of "centrifugal force + gravity" and a self-cleaning system for the screen plate through components such as a servo motor, rotating rod, spiral blades, and corrugated screen plate. The rotating spiral blades apply a stable centrifugal force to the hydrogen flow, throwing fine water droplets against the container wall and guiding them out through a conical chamfer. The corrugated screen plate increases the contact area through its corrugated structure to achieve secondary interception. Simultaneously, the high-frequency vibration driven by a vibrating hammer and spring prevents droplet accumulation and blockage, effectively solving the shortcomings of traditional devices such as low efficiency of simple gravity sedimentation separation, easy filter clogging, and frequent shutdowns for maintenance.

The invention belongs to the technical field of environmental engineering and industrial process control, and particularly relates to an anaerobic reactor simulation system and method based on discrete space-time multi-subject evolution. The system comprises a physical parameter mapping module, a discrete space-time calculation engine, a virtual microbial community builder, a dynamic evolution coupling processor and a stability early warning and control module. Behavior rules of hydrolysis, acid production and methane production subjects are defined in discrete grids, and Monod-Arrhenius kinetic equations and local pH suppression logic are combined, so that material flow and biological phase succession in a reactor is simulated. According to the method, a gravity settling mechanism based on the main body crowding degree and nonlinear instability response logic under the impact load are particularly introduced, the spatio-temporal evolution path of the rancidification process can be visually presented, and the technical problem that a traditional homogeneous model cannot predict local acidification and granular sludge structural characteristics is solved; the method is suitable for sewage treatment process optimization and fault early warning.

The invention relates to the technical field of biomass resource utilization, and discloses a multi-modal fusion feeding device for continuous hydrothermal liquefaction, which comprises a pretreatment and supply unit for mixing a biomass raw material with water to form slurry; a feeding hole of the active cyclone centrifugal separation unit is connected with the pretreatment and feeding unit, and the active cyclone centrifugal separation unit is used for receiving the slurry and separating the slurry into solid-containing underflow and purified overflow under a centrifugal force field. According to the multi-mode fusion feeding device and method for continuous hydrothermal liquefaction, an active rotational flow centrifugal separation unit is adopted to replace traditional gravity sedimentation, solid particles are efficiently separated through centrifugal force, the separation state is mastered in real time through ultrasonic monitoring, and the depth of an overflow pipe is dynamically adjusted through an intelligent controller. According to the mode, fine particles and light fibers which are difficult to treat in a traditional method are effectively removed, meanwhile, solids are continuously discharged along with underflow, accumulation and shutdown cleaning are avoided, and efficient and continuous slurry purification is achieved.

The utility model provides an automatic treatment system for kaolin deironing and whitening acid water. The automatic treatment system comprises a gravity sedimentation recovery tank, a pH regulating tank, an aeration tank, a horizontal flow sedimentation tank, a mechanical acceleration clarification tank and a clean water tank, a water inlet input pipe is arranged on the gravity settling recovery tank, the upper part of the gravity settling recovery tank is connected with the pH regulating tank, the pH regulating tank is connected with the alkali liquor adding tank, the bottom of the pH regulating tank is connected with the aeration tank, the bottom of the aeration tank is connected with the horizontal flow sedimentation tank, and the upper part of the horizontal flow sedimentation tank is connected with the mechanical acceleration clarification tank; and the mechanical acceleration clarification tank is connected with the PAC solution storage tank and the PAM solution storage tank. The automatic treatment system disclosed by the utility model has the beneficial effects that residual kaolin in acid water is recovered through gravity settling, the vast majority of kaolin can be recovered, and the treatment capacity of a subsequent water treatment system and the dosage of a flocculating agent can be effectively reduced, so that the operation cost of water treatment is reduced; the system has a remarkable treatment effect, and is provided with a water quality on-line monitor, so that the treatment time is effectively shortened.

The present application relates to the technical field of fluid precision separation, and discloses a six-channel micrometer high-precision filtration separation method, which comprises the following steps: controlling fluid cooling to a supersaturation precipitation temperature to generate colloidal flocculates; sequentially conveying the fluid through a six-stage physical separation sequence composed of gravity sedimentation, centrifugal cyclone, magnetic adsorption and multi-stage filtration medium; collecting terminal filtration differential pressure in real time and calculating the resistance growth rate; when the resistance growth rate exceeds a critical compaction threshold, feedback adjusting the front-end cooling rate or conveying temperature to optimize the flocculate structure rigidity; by establishing a reverse feedback regulation mechanism between the terminal rheological resistance characteristics and the front-end thermodynamic precipitation parameters, the technical problem that soft colloidal impurities penetrate the filtration medium due to shear deformation is solved, and the separation precision and process operation stability of complex heterogeneous fluid systems are improved.

The application relates to the technical field of industrial manufacturing, and discloses an industrial flue gas environment-friendly treatment separation device, which comprises a cyclone separator, an exhaust pipe is arranged at the top of the cyclone separator, an air inlet pipe is arranged on the outer surface of the cyclone separator, a water draining mechanism is arranged in the air inlet pipe, the water draining mechanism comprises two groups of fixed columns fixedly arranged on the inner wall of the air inlet pipe and a supporting ring, and a water draining cylinder is rotatably arranged in the supporting ring. The device utilizes the flue gas flowing through the opening of the water draining pipe to form negative pressure on the inner wall of the water draining cylinder, the communicating pipe and the water tank, so that the supplementary water is sucked out of the water draining pipe, the water vapor for capturing solid dust particles is formed in the inner cavity of the air inlet pipe through high-temperature heating, in the process, the small-volume solid particles in the flue gas are adsorbed by the water vapor, thereby forming a large-volume solid particle, so that the gravity sedimentation efficiency of the dust in the flue gas in the cyclone separator is greatly improved, and the dust collecting and separating efficiency of the device is remarkably improved.

This utility model provides a gas-solid separation device system, including a gravity settling chamber, a cyclone collector, a high-precision dust collector, a drive device, and several connecting pipes. The gravity settling chamber, cyclone collector, high-precision dust collector, and drive device are connected sequentially along the airflow direction through the connecting pipes. The drive device is used to drive the dust-laden gas to pass through the gravity settling chamber, cyclone collector, and high-precision dust collector in sequence and discharge clean gas. The interior of the gravity settling chamber is equipped with a turbulence structure for gravity settling of coarse dust particles in the dust-laden gas to separate the coarse dust particles. The cyclone collector is used to make the dust-laden gas entering it rotate at high speed to separate medium-sized dust particles in the dust-laden gas using centrifugal force. The interior of the high-precision dust collector is equipped with a filter element structure for filtering the dust-laden gas. The filter element structure is a high-temperature ceramic membrane filter element or a titanium rod sintered filter element for filtering fine dust particles in the dust-laden gas.

The invention relates to the technical field of natural gas treatment, in particular to a natural gas slug flow trapping and defoaming separation integrated device which comprises a container shell, a first-stage separation area, a second-stage separation area, a third-stage separation area and a fourth-stage separation area. The first-stage separation area, the second-stage separation area, the third-stage separation area and the fourth-stage separation area are arranged in the container shell, the concept of stage-by-stage separation from coarse separation to fine separation is adopted, and an axial-flow type separation element is designed. The problems of large-liquid-amount slug flow trapping, foam elimination and efficient separation are effectively solved by utilizing the pressure of the raw material gas and through various separation means such as gravity settling, cyclone defoaming, inertia and filtering.

This invention relates to the field of intelligent lubrication materials and tribology, specifically to an intelligent lubricating gear oil based on electromagnetic rheology technology and its preparation process; it comprises a base oil, modified magnetic composite particles, and a functional additive package; the particles are obtained through surface pretreatment of micron-sized carbonyl iron powder, intermediate layer construction, and in-situ grafting of oleophilic and extreme pressure anti-wear monomers, and have a core-shell structure; its core is a high-density polymer molecular brush layer constructed by long-chain monomers, which utilizes steric hindrance and solvation effects to shield the excessively strong van der Waals forces and magnetic dipole interactions between particles; this invention effectively overcomes gravity sedimentation caused by density differences and significantly improves the dispersion stability of gear oil under static and dynamic environments.

The invention belongs to the technical field of additive manufacturing, and particularly relates to a micro-texture scraper for ceramic slurry photocuring 3D printing and a preparation method and application of the micro-texture scraper, a plurality of micro-structure units are distributed on the working face of a scraper blade, and the depth of the micro-structure units is 1.5-10 times of the maximum characteristic particle size (D90) of ceramic particles in to-be-scraped ceramic slurry. The micro-texture surface of the working surface of the scraper blade generates directional disturbance on a near-wall surface flow field, local micro-vortex induced by the micro-texture surface enhances mixing of slurry in the thickness direction, inhibits shear-induced particle migration and gravity settling phenomena, destroys formation of a resin enrichment layer, and ensures that shear force can be effectively transmitted to a slurry main body.

The invention relates to the technical field of fluid precise separation, and discloses a six-micron high-precision filtering separation method which comprises the following steps: controlling the temperature of fluid to be reduced to a supersaturated precipitation temperature so as to generate colloid flocculate; the fluid is sequentially conveyed to pass through a six-stage physical separation sequence composed of gravity settling, centrifugal rotational flow, magnetic adsorption and multi-stage filtering media; collecting the terminal filtering pressure difference in real time and calculating the resistance growth rate; when the resistance growth rate exceeds a critical compaction threshold value, the front-end cooling rate or the conveying temperature is adjusted in a feedback mode so as to optimize the flocculate structure rigidity, and a reverse feedback regulation and control mechanism between the terminal rheological resistance characteristics and the front-end thermodynamic precipitation parameters is established; the technical problem that soft colloid impurities penetrate through a filtering medium due to shear deformation is solved, and the separation precision and the process operation stability of a complex heterogeneous fluid system are improved.

This invention provides a multi-stage environmentally friendly water-based cutting fluid regeneration process, belonging to the field of industrial wastewater treatment and recycling technology. This multi-stage environmentally friendly water-based cutting fluid regeneration process includes S1, a gravity sedimentation coarse filtration stage: waste cutting fluid is subjected to long-term gravity sedimentation under specific hydrostatic conditions, specifically for removing heavy, large-particle impurities, providing pretreatment for subsequent precision filtration. By setting up multi-stage progressive and functionally specialized physical purification stages, the process systematically solves the problem of efficiently removing complex pollutants from waste cutting fluid. Compared to traditional single-treatment methods, this process first utilizes gravity sedimentation to specifically target heavy, large particles, then uses a specific mesh filter to selectively trap lightweight abrasives, subsequently uses centrifugal force to efficiently separate fine metal powders, and finally uses a nanofiber membrane to achieve deep removal of submicron-level impurities and colloids.

This utility model provides a gas-liquid separation device, relating to the field of gas-liquid separation technology. It includes a separation chamber with an installation port at the bottom of its outer wall and a flange mounted on the top. It also includes a separation assembly, comprising a top filter screen and an inner rotating frame slidably connected within the separation chamber. A fixed rod is rotatably connected within the inner rotating frame, and a backflow rod is fixedly connected to the bottom of the fixed rod. A second inclined plate is fixedly connected within the inner rotating frame. A rotating block is threaded onto the fixed rod and slidably connected to the bottom of the top filter screen. A rotating frame is slidably connected to the bottom of the separation chamber, and a first inclined plate is fixedly connected to the rotating frame. This utility model ensures efficient separation while reducing airflow resistance, avoiding the high energy consumption and clogging problems of traditional coalescing separators. Through multi-stage swirling enhancement, vibration-assisted desorption, and spiral guidance, it effectively solves the problem of low efficiency in separating fine droplets using traditional inertial separation and gravity sedimentation.

The invention discloses a method for preparing a high-uniformity high-niobium titanium aluminum master alloy ingot through vacuum induction suspension smelting. According to the method, electromagnetic suspension smelting is utilized, and firstly, component homogenization of a melt is achieved through high-power strong Lorentz force stirring; in the solidification stage, two-stage stepped cooling of first rapid cooling and then slow cooling is adopted, in the liquid-solid two-phase zone stage, the heating power is linearly reduced to middle transition power at a high power attenuation rate, and then the heating power is switched to be linearly reduced to zero at a low power attenuation rate. The speed of high-speed cooling in the first stage is higher than the gravity settling speed of elements in a pasty area, so that the element components are more uniform; the low-speed cooling in the second stage effectively reduces the thermal stress gradient in the solid-state shrinkage stage, and stress cracking is prevented. According to the method, the problem that the component uniformity and the crack resistance of the high-niobium titanium-aluminum alloy are difficult to consider at the same time is solved, and the cast ingot which is uniform in component, fine in grain and free of macroscopic defects can be directly obtained.