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400 results about "Particle separation" patented technology

Particle separation processes such as sedimentation, flotation and filtration are significantly influenced by particle size, and the process chosen can depend greatly on the size of the particles to be removed (see Figure 1.1).

Industrial flue gas carbon monoxide concentration detection device

The invention relates to the technical field of carbon monoxide concentration detection, in particular to an industrial flue gas carbon monoxide concentration detection device which comprises an industrial flue gas detection mobile device, and a carbon monoxide concentration infrared detection device and a data analysis processing device are arranged above the industrial flue gas detection mobile device. The device has the beneficial effects that the comprehensive sealing plate is arranged in the flue gas suction probe, the particulate matter treatment frames are matched to guide gas by utilizing a streamline fin-shaped structure, and based on the inertia principle, large particulate matters deviate from a main stream and are pushed and dispersed to particulate matter diversion grooves on the two sides of an airflow particle separation guide sheet; small particulate matters are filtered by the filter disc, and then the gas is guided and dispersed in the heat dissipation and cooling process through the particulate matter treatment frame and is in contact with the water absorption silica gel pad, so that most of moisture can be absorbed, and the aim of pretreating the industrial flue gas in the flue gas suction probe sampling process is fulfilled.
Owner:JIANGSU INST OF METROLOGY

Fine particle separation apparatus and fine particle separation method

To provide a fine particle separation technique for separating fine particles highly efficiently and highly precisely.SOLUTION: A fine particle separation apparatus includes: a first channel for introducing a first fluid including a first particle and a second particle; a second channel for introducing a second fluid not including particles; a third channel for introducing the first fluid and the second fluid as a laminar flow by merging the first channel with the second channel; a laser light source for irradiating the third channel with laser light; a first output port provided on the downstream side of an irradiation position of the laser light to take out a third fluid including the first particle; and a second output port provided on the downstream side of the irradiation position to take out a fourth fluid including the second particle having a scattering cross-section area larger than the first particle.SELECTED DRAWING: Figure 5
Owner:UNIVERSITY OF ELECTRO-COMMUNICATIONS

Tail gas purification device of environment-friendly solid waste incinerator

The invention discloses a tail gas purification device of an environment-friendly solid waste incinerator, and relates to the technical field of tail gas particle separation, the tail gas purification device comprises a separation tank, a tank cover and a control device arranged on the tank cover, and the interior of the separation tank is divided into a separation area, a deposition area and a mounting area; a separation mechanism used for separating particles in tail gas, a power part, a centrifugal mechanism, a scraping mechanism and a material receiving frame detachably and fixedly connected with the separation tank are arranged in the separation tank. The centrifugal mechanism and the separation mechanism are arranged, the centrifugal mechanism conducts preliminary centrifugal separation on particles in tail gas introduced into the separation area, then the particles which are not centrifugally separated by the centrifugal mechanism are still mixed with the tail gas, and then the separation mechanism conducts filtering separation on the tail gas which is still mixed with the particles. And atomized liquid is continuously sprayed to the surface of the separation plate through the spraying piece, so that the adsorption effect of the separation plate on particles in the tail gas is improved, and the separation effect of the device on the particles in the tail gas introduced into the separation tank is improved.
Owner:SHANDONG KANGMING ENVIRONMENTAL PROTECTION CO LTD

Space air particle differentiation system and control method thereof

The invention relates to the technical field of air purification, and discloses a space air particle differentiation system and a control method thereof.The space air particle differentiation system comprises an air particle separation module and a control module, the air particle separation module comprises an air inlet, a cyclone separation barrel and a detachable dust collection barrel, the cyclone separation barrel separates particles in air through centrifugal force classification, and the separated particles fall into the bottom dust collection barrel; the ultraviolet catalysis module comprises an ultraviolet reaction chamber, the inner wall of the ultraviolet reaction chamber is coated with a photocatalyst, and a UV-C light source is configured and used for decomposing organic pollutants and microorganisms; the electron-ozone reaction module comprises a mixed flow pipeline fan and an exhaust port, the mixed flow pipeline fan forms negative pressure airflow in the system, and purified air is exhausted through the exhaust port. Through cooperation of cyclone separation, ultraviolet catalysis and electron-ozone reaction, large particles are removed through cyclone separation, organic matter is decomposed through ultraviolet catalysis, microorganisms and superfine particles are oxidized and decomposed in a reaction chamber through electron flow and ozone, the maintenance period is prolonged, and efficient consumable-free purification is achieved.
Owner:MAINDALE GROUP CO LTD

Acoustic separation of particles for bioprocessing

A method for separating particles in a biofluid includes pretreating the biofluid by introducing an additive, flowing the pretreated biofluid through a microfluidic separation channel, and applying acoustic energy to the microfluidic separation channel. A system for microfluidic separation, capable of separating target particles from non-target particles in a biofluid includes at least one microfluidic separation channel, a source of biofluid, a source of additive, and at least one acoustic transducer coupled to the microfluidic separation channel. A kit for microfluidic particle separation includes a microfluidic separation channel connected to an acoustic transducer, a source of an additive, and instructions for use.
Owner:THE CHARLES STARK DRAPER LABORATORY INC

Dust collecting device

A dust collecting device is provided. The dust collecting device includes a particle separation component, an airflow output component and a particle collection component. One side of the particle separation component extends outward to form a first gas input portion, one end of the particle separation component extends outward to form a first gas output portion, and another end of the particle separation component extends outward to form a foreign matter outlet portion. One side of the airflow output component extends outward to form an airflow inlet portion, one end of the airflow output component extends outward to form a second gas output portion, and another end of the airflow output component extends outward to form a second gas input portion. The second gas output portion is connected to the first gas input portion. The particle collection component is connected to the foreign matter outlet portion.
Owner:RAYZHER INDUSTRIAL CO LTD

Self-adaptive wind pressure regulation and control system of quartz sand unpowered powder selecting equipment

The invention discloses a self-adaptive air pressure regulation and control system of quartz sand unpowered powder selecting equipment, and relates to the technical field of automatic control. According to the method, wind pressure and airflow disturbance signals are collected, a high-resolution map is generated through Hampel filtering and noise reduction, features are extracted through the convolutional neural network, key influence areas are identified, the problem of unstable wind pressure caused by airflow disturbance in a mountainous area is solved, and the particle separation precision is improved; a natural potential energy distribution matrix is constructed based on building floor height difference, velocity field reconstruction and airflow channel optimization are driven, technological parameters are adjusted in combination with a gradient descent algorithm, precise utilization of natural potential energy is achieved, energy consumption is reduced, uneven efficiency is improved, airflow distribution is simulated through a fluid dynamic model, and sedimentation behaviors are analyzed and predicted through particle trajectory. A support vector machine is used for classifying tracks and generating regulation and control instructions, PID control is used for stabilizing air pressure to form a closed loop, the problems that fine powder is mixed with coarse powder, coarse particles are left and the like are avoided, the equipment blockage risk is reduced, and the product purity stability is improved.
Owner:SICHUAN NANLIAN MINING CO LTD

Cyclone separator

The utility model belongs to the technical field of gas-solid separation, and particularly relates to a cyclone separator which comprises a first separation cylinder, a second separation cylinder, an air inlet pipe, an exhaust pipe and an ash bucket, the first separation cylinder comprises a first cylinder and a first conical cylinder, and the second separation cylinder comprises a second cylinder and a second conical cylinder. The second separation cylinder is coaxially sleeved in the first separation cylinder; the device further comprises a condensing coil, a refrigerating machine and a fan; the dust hopper comprises an inclined guide plate, a sliding rail and a storage groove, the two stages of cyclone barrels are adopted, the first separation barrel is used for collecting coarse particles, the second separation barrel is used for collecting fine particles, the separation efficiency is remarkably improved, and the burden of downstream equipment is relieved; in addition, a water absorption filter screen for removing water vapor, a vibrator and a storage tank for collecting dust are supplemented, so that the equipment is convenient to clean.
Owner:JIAOZUO JINGYU SILICON IND CO LTD

Metal ion micro-interface induced crystallization separation device and method in high-salinity wastewater

The present application relates to the technical field of high-salinity wastewater, and particularly relates to a device and a method for separating metal ions in high-salinity wastewater by micro-interface induced crystallization. The present application provides a device for separating metal ions in high-salinity wastewater by micro-interface induced crystallization, which comprises a cylinder, and a fluid mixing zone, a circulating granulation zone and a particle separation zone are sequentially arranged in the cylinder from bottom to top. The device for separating metal ions in high-salinity wastewater by micro-interface induced crystallization provided by the present application helps high-salinity wastewater to enter the upper space of the gas-liquid distributor at different speeds with the help of the differential-speed gas-liquid distributor; meanwhile, more crystalline particles are sent to the circulating granulation zone, the flow direction of the seed crystal in the circulating granulation is regulated, and the crystallization efficiency of the seed crystal is improved. The fluidization zone is designed to be wide at the bottom and narrow at the top, the cross-sectional area of the flow channel of the upper fluidization zone is increased, more sufficient reaction space is provided for the crystalline particles, the drag force of the fluid on the seed crystal particles is weakened, and the residence time of the crystalline particles in the upper fluidization zone is prolonged.
Owner:EAST CHINA UNIV OF SCI & TECH

Particle separator system, materials, and methods of use

The present invention concerns systems, materials, and methods of cell, cell organelle and / or particle separation and / or concentration utilizing magnetic levitation to affect separation. In some embodiments, the separation and / or concentration is performed in the wells of a multi-well plate.
Owner:LEVITASBIO INC

Mineral substance feeding device

The invention discloses a mineral substance feeding device. The mineral substance feeding device comprises a shell, a large particle separation bin, a medium particle separation bin, a small particle separation bin, a vibration separation mechanism and a material lifting and moving mechanism. The vibration separation mechanism comprises a vibration separation bracket, a material guide basin, a large particle separation sieve plate, a medium particle separation sieve plate and a vibration rotating mechanism; the vibration rotating mechanism drives the material guide basin, the large particle separation sieve plate and the medium particle separation sieve plate to vibrate and rotate; the large-particle separation sieve plate is used for separating large-particle mineral substances and throwing the large-particle mineral substances into the large-particle separation bin through rotary centrifugation, and the medium-particle separation sieve plate is used for separating medium-particle mineral substances and throwing the medium-particle mineral substances into the medium-particle separation bin through rotary centrifugation; the medium-particle separation sieve plate is used for guiding small-particle minerals into the small-particle separation bin; precise separation of particle minerals of different sizes is achieved, manual feeding is not needed, and it is ensured that nutritional ingredients in chicken feed are evenly distributed.
Owner:BEIJING C P EGG LNDUSTRY CO LTD

Slurry sediment purification method and device

The invention relates to a mud sediment purification method and device, and belongs to the technical field of mud sediment purification. By adding a gel breaker and combining oxidation / acidolysis and thermochemical treatment, stable structures of colloidal particles are destroyed, wrapped fine particles are released, and a surfactant is further added in a partitioned manner by adopting a spiral path, so that the mud sediment purification effect is improved. And stirring is combined to ensure uniform diffusion of the agent, obviously reduce apparent viscosity of the slurry and improve fluidity. Afterwards, the centrifugal-shear synergistic effect of the high-speed centrifugal machine and the hydrocyclone is used for enhancing the particle separation efficiency, shortening the retention time and inhibiting the laminar flow blockage risk; meanwhile, an electric field is applied to drive charged particles to be enriched towards an electrode area. Finally, the water content of the slurry is greatly reduced through a deep dehydration process assisted by a filter aid, and the integrated process not only reduces the hydrodynamic resistance and treats volume expansion, but also remarkably relieves the problems of laminar flow retardation, abrasion and frequent blockage of pipelines and equipment.
Owner:HUBEI JIAOTONG TOU SHIWUNAN EXPRESSWAY CO LTD

Magnetophoresis separation device and method for paramagnetic micro-nano magnetic particles

The invention provides a paramagnetic micro-nano magnetic particle magnetophoresis separation device and a paramagnetic micro-nano magnetic particle magnetophoresis separation method, and relates to the technical field of micro-nano magnetic particle separation and magnetic labeled biomolecule separation analysis. The separation device comprises a plurality of permanent magnets which have the same magnetism and the same size and are arranged above the separation channel at intervals in the direction of the separation channel, and a plurality of sets of mechanical structures which respectively drive each permanent magnet to move up and down in the vertical direction; the Hall sensor clings to the separation channel and is used for detecting the magnetic induction intensity at the separation channel; a liquid inlet device; a UV / Vis ultraviolet-visible light detector; a collection device and a computer. The magnetic induction intensity in the separation channel can be set, the critical diameter of the micro-nano magnetic particles capable of being captured by the magnetic field is determined, magnetophoresis separation of paramagnetic micro-nano magnetic particles is accurately achieved, the controllability of the magnetophoresis separation process is enhanced, and the separation effect of the micro-nano magnetic particles is improved.
Owner:DALIAN JIAOTONG UNIVERSITY

Carbon black particle selection and separation integrated equipment and method

The invention discloses carbon black particle selection and separation integrated equipment and method, and relates to the technical field of carbon black particle separation. The equipment is mainly composed of a multi-channel shunting assembly, a periodic electrostatic assembly and an ultrasonic sorting space. Raw material conveying and preliminary dispersion are achieved through the multi-channel shunting assembly, differential charge loading of carbon black particles is achieved through the periodic electrostatic assembly, and accurate sorting is achieved through ultrasonic damage agglomeration and arc-shaped electrostatic plate gradient voltage in the ultrasonic sorting space. The method comprises the steps of raw material conveying, charge loading, particle separation pretreatment, sorting of particles with different particle sizes, vibration discharging and collecting and the like. The problem of inaccurate separation caused by carbon black agglomeration in a traditional separation method is effectively solved, carbon black particles with different particle sizes can be accurately separated, the product quality is improved, separation of carbon black with different particle size ranges can be adapted by adjusting related parameters, and diversified production requirements are met.
Owner:ANHUI KELIN TAIER RENEWABLE RESOURCES TECH CO LTD

Integrated desulfurization and decarbonization particle separation external circulation spouting fluidized bed and operating method

The application discloses an integrated desulfurization and decarbonization particle separation external circulation spouting fluidized bed and a running method thereof, and belongs to the technical field of flue gas desulfurization and decarbonization. The fluidized bed is provided with a gas inlet at the bottom, a micro cyclone separator is arranged in the fluidized bed, a spouting bed gas inlet is communicated with a fluidized bed exhaust port, a micro cyclone separator exhaust port is communicated with the fluidized bed exhaust port, and the bottom of the micro cyclone separator is communicated with the outside. A calcium oxide feeding port is arranged at the lower end of the spouting bed, the top of the spouting bed is communicated with a cyclone separator gas inlet, a cyclone separator exhaust port is communicated with a calcining furnace inlet, and the calcining furnace is provided with a carbon dioxide discharge pipe. The intermittent fluidized bed is provided with a calcium hydroxide slurry inlet at the top, the calcium oxide feeding port is provided with a sealing cover, the calcining furnace outlet is communicated with a calcium oxide powder discharge pipe or a material guide pipe inlet, and the material guide pipe outlet is communicated with the lower end of the spouting bed. The continuous fluidized bed is provided with a liquid inlet at the top, the calcium oxide feeding port is an opening, the calcining furnace outlet is communicated with the material guide pipe inlet, and the material guide pipe outlet is communicated with the fluidized bed.
Owner:NORTHWEST UNIV

Debris flow discharge channel

ActiveCN224468526UHydrologyFine particulate
A debris flow discharge channel, comprising: a main channel through which the debris flow passes; a separation screen detachably connected to the main channel, the separation screen separating the main channel into an upper discharge channel and a lower discharge channel; a first accumulation area in communication with the upper discharge channel; a buffer channel in communication with the lower discharge channel, the buffer channel being provided with transverse energy dissipation ridges and longitudinal flow guide ridges; and a second accumulation area provided behind the buffer channel. The separation screen separates coarse and fine particles, which, in terms of service life, prevents the downstream discharge channel from being damaged by the huge impact force of coarse particles or being blocked by the accumulation, effectively prolongs the service life of the discharge channel, and, in terms of later maintenance, the separation of coarse and fine particles facilitates the maintenance and repair of the downstream main channel, thereby effectively reducing the maintenance cost in the later period.
Owner:GEOLOGICAL & NATURAL DISASTER PREVENTION & CONTROL INST GANSU ACADEMY OF SCI

Method of Separating Scrap Particles, and Particle Separation Assemby

Method of separating a mixture of scrap particles into fractions with different mass densities, comprising: feeding the mixture of scrap particles into a volume of ferrofluid held in a magnetic field configured for magnetic density separation of the scrap particles in the volume of ferrofluid; using the magnetic field, by the principle of magnetic density separation, causing the scrap particles in the volume of ferrofluid to become spatially distributed according to their mass densities along a separation direction having a horizontal component; while at least partly maintaining the spatial distribution, removing the scrap particles along a removal direction out of the volume of ferrofluid, the removal direction being substantially transverse to the separation direction; and, using the at least partially maintained spatial distribution, separating the removed scrap particles into fractions with different mass densities.
Owner:TECH UNIV DELFT

Sewage treatment device for ship operation

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment device for ship operation, which comprises a cavity, an oil filtering assembly is movably mounted in the cavity, the oil filtering assembly comprises a sliding frame, a conical filter screen and a buoy, the sliding frame and the buoy are both slidably mounted in the cavity, and the conical filter screen is movably mounted in the cavity. And a rotating shaft is rotationally mounted in the cavity. In the sewage treatment process, the conical filter screen continuously performs alternate operation of forward filtration and reverse washing, the service life of the conical filter screen is prolonged, the sewage treatment efficiency and stability are improved, oil particles are guided to float upwards through the spiral strip, the oil particle collection efficiency is effectively improved, the coalescence effect is enhanced, and the oil particles can be recycled. Through extrusion of the first included angle, continuous and efficient discharge of oil particles is achieved, the situation that the separation effect is affected by local accumulated oil is avoided, the oil particle separation efficiency is further improved, meanwhile, the risk of blockage caused by accumulation of the oil particles on the inner side of the first included angle is avoided, and the stability of sewage treatment is ensured.
Owner:SHANDONG MINGCHAO ENVIRONMENTAL PROTECTION TECH CO LTD

A method for large-scale growth of graphene on non-metallic particle surfaces

The present application relates to graphene material and its preparation technology, specifically to a method for growing graphene on the surface of non-metallic particles on a large scale, which is suitable for large-scale preparation of graphene-coated non-metallic powder material. The present application uses a two-step method to grow graphene uniformly on the surface of a large number of non-metallic particles: first, mix a large number of non-metallic particles with a carbon source, and form a bulk composite material of non-metallic particles and carbon through low-temperature carbonization; then, pass current to the above bulk composite material using electrodes to heat it to a higher temperature, convert the carbon into graphene, until graphene-coated non-metallic particles are obtained, which are separated from each other, and the high-temperature heating process stops spontaneously. The present application can grow a graphene layer on the surface of a large number of non-metallic particles, the method is easy to scale up, and has the characteristics of good uniformity of graphene coating and high particle separation degree; at the same time, by taking advantage of the large resistance of graphene-coated non-metallic particles which are separated from each other, the high-temperature heating process stops spontaneously.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Profiling air inlet prefilter

The utility model discloses a profiling air inlet prefilter, which belongs to the technical field of air inlet pipelines of engines and comprises a shell component consisting of a first shell and a second shell, and the first shell and the second shell are welded to form a closed cavity. An air inlet channel inlet is formed in one end of the cavity, and an air outlet and a dust discharging unit are arranged at the other end of the cavity; and a filtering and separating unit is arranged in the cavity. According to the prefilter with the profiling air inlet channel, through the design of the dust discharging unit, the filtering and separating unit and the profiling flow channel, the particle separating efficiency is improved, the air inlet resistance is reduced, the maintenance frequency of the air filter is reduced, and the energy consumption and the cost are reduced.
Owner:HEBEI SHUNQING FILTER TECH CO LTD

A method for preparing nanocrystalline strips and nanoparticles based on gas phase driving and liquid rolling

The present invention belongs to the field of magnetic materials, and specifically relates to a method for preparing nanocrystalline strips and nanoparticles based on gas-phase drive and liquid rolling. A crystallized thin strip with a width of 5 to 40 mm is obtained through processes such as alloy melting, pouring, and liquid rolling. The crystallized thin strip is subjected to heat treatment, crushing, chemical and physical driven particle separation, and other processes to finally obtain a magnetic particle powder. The powder is single crystal, with more than 85% of the particles being undamaged and more than 95% of the particles having a damaged volume of ≤10%. The six-dimensional particle size D80 is 8 to 10 nm and 20 to 30 nm, the particle shape is a hexagonal prism structure, the aspect ratio is 1.2 to 1.8:1, and the magnetic induction is 35 to 80 A·m. 2 / kg.
Owner:NORTHEASTERN UNIV CHINA

Electrode for energy storage device

An electrode for an electrochemical energy storage device formed from an electrostatic deposition process employs a composite particle including active material (AM) particle with adhered binder and optionally conductive particles formed with sufficient interaction forces between the individual ingredient particles to form an effective composite particle which can overcome particle separation during electrostatic charging, fluidization, and / or mechanical conveyance. Secondary binder particles undergo deagglomeration to form sub particles, which are adhered to the AM particles having a predetermined morphology. Smaller conductive particles, typically carbon black (CB) or similar carbon, are bound to the binder and adhere to the AM particles. The result is a composite particle adhered for withstanding separation forces imposed from electrostatic deposition onto a current collector. Application of a plurality of composite particles onto a conductive current collector in a uniform pattern and defined loading promotes robust energy density, power density, and cycle life for an electrochemical energy storage device.
Owner:AM BATTERIES INC

Gas-solid separation type sintering machine vertical pipe superheater device

The invention discloses a gas-solid separation type sintering machine vertical pipe superheater device, which belongs to the technical field of sintering and comprises a sintering machine tail air bellow, a gas-solid separation tee joint, a settling pipe, a superheater and a large flue. And one port of the gas-solid separation tee joint is communicated with a tail air box of the sintering machine. And the upstream end of the settling pipe is communicated with one port of the gas-solid separation tee joint. And the upstream end of the superheater is communicated with one port of the gas-solid separation tee joint. And the large flue is respectively communicated with the downstream end of the settling pipe and the downstream end of the superheater. After flue gas enters the gas-solid separation tee joint from a tail air box of the sintering machine, a gas purification path and a dust removal path are formed by the tee joint structure. Dust-containing particles of the flue gas flow along the direction of the settling pipe under the blocking and gravity effects of the structure of the gas-solid separation tee joint, so that large particles are settled. And the dust content of airflow after particle separation is remarkably reduced, and the quality of flue gas entering the superheater is greatly improved.
Owner:HUNAN VALIN XIANGTAN IRON & STEEL CO LTD

A method for monitoring or controlling the separation of particles suspended in a liquid and a particles separation apparatus

A method (200) of determining a progress of separation of particles suspended in a liquid in a container (110) of a separation apparatus (100), wherein: said particles are separated from said liquid by sedimentation; said separation apparatus (100) compri- sing a container (110) with a feed inlet and a rotatable rake (120) at its bottom (114); a motor (126) for driving said rake (120); and a pressure measuring device (130), for measuring a hydrostatic pressure at or near the bottom of said container said method (200) comprising: measuring (210) said hydrostatic pressure; driving (220) said rake (120) by means of said motor; obtaining (230) at least one load parameter of said motor (126) during said driving of said rotation; determining (240), especially in real time, a status indicator relating to said separation process, as a function of said hydrostatic pressure and said load parameter, wherein said status indicator comprises: a sedi- mentation index, especially wherein the sedimentation index is indicative of the separation of said particles from said liquid, and / or a feed solid content index, wherein the feed solid content index is indicative of the solid content supplied by said feed.
Owner:ENDRESS HAUSER FLOWTEC AG

Apparatus for processing a gas stream

The invention relates to an apparatus for treating a gas stream containing undesired components, such as sulphur dioxide or mercury, the gas stream coming from a combustion unit (10) in which at least one mineral material can be calcined, and which apparatus in particular comprises a first injection device (162) connected to a second gas / particle separation device (140) such that at least part of the first particles injected into the gas stream by the first injection device (162) at least partly consists of a second particle stream coming from the second gas / particle separation device (140).
Owner:FIVES FCB

A screening structure for dredging soil particle sorting and a screening method thereof

The application discloses a screening structure for dredging soil particle separation and a screening method thereof, relates to the technical field of soil particle screening structure, and aims at solving the problems that the existing dredging screening is mostly arranged with many water pipes in a soil stockyard, the flow between soil particles is accelerated through water flow, and the particle grading is improved, however, the method is high in cost and the actual effect is not very ideal. The inside of the screening pool is provided with a first baffle, one side of the upper end of the first baffle is provided with a second baffle, one side of the first baffle is provided with a first separation groove, the other side of the first baffle is provided with a second separation groove, one side of the inside of the screening pool is fixedly provided with a third baffle, one side of the third baffle is provided with a first particle scraping mechanism, one end of the inside of the screening pool, close to a feeding groove, is provided with a second particle scraping mechanism, and one end of the inside of the screening pool, close to a fine soil discharging groove, is provided with a third particle scraping mechanism.
Owner:FUJIAN UNIV OF TECH

Particle separation device, gas particle concentration detection equipment and aerosol sampling device

The present invention discloses a particle separation device, gas particle concentration detection equipment, and an aerosol sampling device. The particle separation device includes a first separator, wherein a first air inlet of the first separator is connected to a first accommodating chamber, and a first deflection portion is located between the first air inlet and the first accommodating chamber; a first airflow generating device is configured to generate a first airflow and connect to the first accommodating chamber, allowing a first target gas (including first and second particles) to enter the first accommodating chamber through the first air inlet, with the first particles being larger than the second particles; and a second airflow generating device is configured to generate a second airflow and connect to the first deflection portion through the second accommodating chamber, thereby drawing the second particles entering the first accommodating chamber into the second accommodating chamber while preventing the first particles from being drawn into the second accommodating chamber. This invention avoids the particle breakage and rebound problems that may occur in traditional impactors.
Owner:SHANDONG UNIV

Wafer particle separation method

The present invention discloses a method for separating wafer particles, comprising the steps of: laser cutting a preset cutting path of a wafer coated with a laser cutting protective liquid according to a preset cutting depth to obtain a cut wafer, wherein the preset cutting depth is less than the thickness of the preset cutting path; cold expansion separation is performed on the cut wafer to obtain wafer particles, that is, laser cutting is first performed on the cutting path without cutting it off, but only a hole is opened to achieve the purpose of damaging the cutting path; during subsequent hidden cutting, only the inside of the wafer is modified; during cold expansion separation, since the groove position of the cutting path is fragile, the cold expansion force can be guided from the hidden cutting position to the fragile position of the cutting path, thereby separating the wafer particles more easily and avoiding chip die (wafer) cracking, thereby effectively improving the quality of wafer particle separation and further improving product yield.
Owner:GUANGDONG TAILAI PACKAGING & TESTING TECH CO LTD

Device and method for the detection of microplastics in aquatic environments

The present disclosure relates to a device and method for the detection of microplastics in aquatic environments. An aspect of the disclosure comprises a device for the detection in situ of microplastics in aquatic environments comprising: an inlet and an outlet; a separation unit, within said inlet and outlet, with at least two arrays of micropillars separated from each other; a sample container, coupled to the inlet of the separation unit, comprising an aeration system; a detection unit aligned substantially perpendicularly to the separation unit; wherein the inlet comprises a coiled tube comprises a length from 25 cm to 125 cm; wherein the separation unit comprises a flow rate comprised from 10 µL / min to 150 µL / min, preferably from 50 µL / min to 150 µL / min, to promote particles separation according to their sizes due to an axial spreading of the particles along the direction of the laminar flow.
Owner:LAB IBERICO INT DE NANOTECNOLOGIA LIN

Sectional type automatic processing device for plastic particles

The utility model relates to the technical field of automatic processing, in particular to a sectional type automatic processing device for plastic particles, which is convenient for quickly separating a mixture of impurities and dust cleaned by the device from the particles, so that the cleaning effect and the cleaning efficiency of the device on the particles are improved, and the practicability is improved. The top end of the processing bin communicates with a feeding pipe, the bottom end of the processing bin communicates with a discharging pipe, the bottom end of the processing bin is longitudinally and rotationally provided with a rotating shaft, a plurality of fixing plates are fixedly installed on the rotating shaft, a plurality of stirring rods are fixedly installed on the outer side wall of each fixing plate, and the filter screen is slidably connected with the inner side wall of the processing bin. A fixing groove is formed in one end of the filter screen, the second pull rope is slidably connected with the top end of the processing bin, a roller is rotationally installed between the two protection plates, each second pull rope is connected with the outer side wall of the roller in a winding mode, and a first door is rotationally installed on the outer side wall of the processing bin.
Owner:CHONGQING TENGYUAN NEW MATERIAL TECHNOLOGY CO LTD