20 results about "Depth filter" patented technology

The present invention provides a method for producing extracellular vesicles, the method including a step for passing a crushed liquid of plants, mushrooms, or microalgae through a depth filter, and a step for subjecting the crushed liquid after passing through the depth filter to ultrafiltration treatment, the depth filter being composed of filaments.

A method and system for purifying oil, the method comprising the steps of: - providing a separation agent and oil to be purified to at least one settling tank; - waiting to allow a sludge phase to settle to the bottom portion of the settling tank, the sludge phase comprising the separation agent along with impurities from the oil; - removing an oil phase excluding the sludge phase from at least one settling tank; and - filtering the oil phase through a depth filter to remove any possible residual separation agent and impurities.

The present invention relates to a method for isolating and enriching pathogenic nucleic acids from a biological sample thereby reducing host nucleic acid contamination and enrich relative pathogenic DNA in the infectious disease sample and a device thereof. The method involves mixing pathogenic nucleic acid containing biological sample with a lysis buffer at a temperature between 25-35°C for partial or incomplete lysis of the sample; passing the lysed sample through a depth filter wherein the filter paper size ranges from 0.22 microns to 20 microns; passing an elution buffer by reverse plunging action and generating a vibration of 200 to 350 Hz with discontinuous pulse of 20-30 seconds for 2-5 minutes for eluting pathogenic nucleic acids into the elution buffer. The invention further provides a device for isolating and enriching pathogenic nucleic acids from a nucleic acid containing biological sample thereby reducing host nucleic acid contamination using said method.

1. Name of the product in this design: Depth Filter. 2. Purpose of this design: for fluid filtration, separation, and purification. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The wastewater treatment device comprises a pretreatment mechanism, a multifunctional treatment tank and a deep filtration tank, the pretreatment mechanism is communicated with the inner bottom of the multifunctional treatment tank through a first water outlet pipeline, and a Fe-Cu-C reaction layer, a catalytic oxidation filler layer and a first aeration mechanism which are distributed up and down are arranged in the multifunctional treatment tank; the Fe-Cu-C reaction layer and the catalytic oxidation filler layer are distributed above a water outlet of the first water outlet pipeline; the multifunctional treatment tank is communicated with the bottom of the deep filtering tank through a second water outlet pipeline, a filtering layer and a second aeration mechanism are arranged in the deep filtering tank, and the filtering layer is distributed above a water outlet of the second water outlet pipeline; the first aeration mechanism is connected with the ozone generator, and the second aeration mechanism is connected with the air generator. The device can reduce the energy consumption of wastewater treatment, meets the low-carbon requirement, occupies a small area, generates less sludge, and reduces the operation cost.

According to the preparation method of the hydrophobic deep filtering paperboard, natural fibers are subjected to hydrophobic modification, so that the deep filtering paperboard is endowed with uniform hydrophobic performance, the interaction between the surface of the paperboard and a filter cake layer can be reduced, and a filter cake is convenient to peel off. The hydrophobic natural fiber can be uniformly dispersed in water without additional treatment on the hydrophobic fiber, so that the hydrophobic fiber does not need to be subjected to pre-hydrophilic treatment in the paperboard preparation process, the process is simple, and the cost is low. The low-melting-point fibers are used as a binder, surface fibers of the deep filtering paperboard can be reinforced, when the deep filtering paperboard scrapes a filter cake, the surface fibers cannot fall off, the deep filtering paperboard has great wet strength and bending strength, and compared with a traditional deep filtering paperboard, the deep filtering paperboard has the advantages that the surface fibers are not prone to falling off; and when a filter cake is scraped, the filter cake can be prevented from being damaged due to bending and twisting in a wet state. The filter press disclosed by the invention is low in cost and convenient to use, and has a relatively high practical value.

The present invention relates to a filter medium being at least formed of a pre-filter substrate laminated with a fine-filter substrate by means of a third binder, wherein the pre-filter substrate comprises synthetic fibers and a first binder, the pre-filter substrate working as a combined surface and depth filter, and the fine-filter substrate comprises at least a second binder and one of synthetic fibers and inorganic fibers.

This invention provides an improved depth filtration medium with reduced extractant for DSP filtration and clarification applications. Furthermore, it provides an improved depth filtration medium that is compatible with gamma irradiation-based filter sterilization processes. [Solution] A depth filtration medium is provided for clarifying the recovered material from a feed stream of a cell culture containing therapeutic biomolecules. The depth filtration medium is composed of a sintered mixture of a polymer adsorbent and a thermoplastic binder, has extremely low extractability, and does not require pre-washing before use. Furthermore, the constituent materials used in the sintered depth filter medium exhibit high stability to gamma rays and are compatible with gamma-based pre-use sterilization processes.

The application discloses a sea depth prediction method and system based on a variational filtering method and a baseband removal method, and a storage medium, relates to the technical field of geographic information data processing, and comprises the following steps: obtaining a gravity anomaly residual frequency domain signal and a ship-surveyed sea depth residual frequency domain signal; performing filter design to obtain a sea depth filter and a gravity anomaly filter; performing filtering to obtain a ship-surveyed sea depth mid-wave frequency domain signal and a gravity anomaly mid-wave frequency domain signal; obtaining a target area mid-wave predicted sea depth, a target area long-wave predicted sea depth and a target area short-wave predicted sea depth; and obtaining a target area predicted sea depth. In the scheme, the existing discrete data is used to obtain the target area predicted sea depth from the signal decomposition angle based on the semi-physical set and the semi-data fusion driving mode, the existing data is constrained in a fuzzy and wide range, the application range is widened, the experience interference is reduced, the time consumption is reduced while the result convergence is ensured, and the sea depth prediction effect is good.

The utility model discloses filter cloth for sewage treatment, which comprises a main frame, one side of the main frame is of an open structure and is connected with a blocking frame, one end of the blocking frame is hinged with the main frame, the other end of the blocking frame is detachably connected with the main frame through a limiting assembly, and two pairs of auxiliary frames are longitudinally arranged in the main frame at intervals. Two pairs of auxiliary frames are longitudinally arranged in the main frame at intervals, coarse filter cloth, fine filter cloth, deep filter cloth and functional filter cloth are respectively arranged in the two pairs of auxiliary frames from top to bottom, and caulking grooves allowing the auxiliary frames to be embedded in a sliding mode are formed in the inner walls of the two sides of the main frame. The coarse filter cloth, the fine filter cloth, the deep filter cloth and the functional filter cloth are respectively mounted, so that multi-layer and all-directional efficient filtration of sewage is realized, and the sewage treatment effect is greatly improved.

The utility model discloses a movable container type sprout vegetable planting house, including the planting house body, the planting frame is arranged in the planting house body, the planting house body one end is provided with through -hole, the fan is fixedly installed in the through -hole inboard, and the through -hole is provided with depth filter screen in, the through -hole inside symmetry is provided with the slot, and the slot is fixedly installed with locking shell in, depth filter screen one end symmetry fixed mounting has inserted rod, and inserted rod is matched with the slot, the utility model discloses through pressing depth filter screen and realizes quick unlocking, and inserted rod drives trapezoidal block extrusion elastic locking block, makes locking rod exit limit slot, and unfastens the reset spring of pressing and pushes the sliding block back and moves, lets elastic locking block and trapezoidal block separate, and it can draw out inserted rod to complete disassembly to pull outwards, the whole process does not need tool, only through pressing and pulling operation can realize the quick disassembly of depth filter screen, is convenient for washing or replacement, improves maintenance convenience, guarantees filter screen filtering effect.

The utility model relates to waste oil filter assembly field, concretely relates to a kind of waste oil filter assembly of multilayer composite structure, including filter bucket, for waste oil filtration;Mounting cover is threadedly connected in the upper portion of filter bucket.The utility model relates to a kind of waste oil filter assembly of multilayer composite structure, through the setting of filter assembly, driving motor, transmission rod, stirring vane, first spur gear, second spur gear, gear ring and scraper, waste oil is transported to filter assembly inside by oil inlet, then driving motor switch is opened, driving transmission rod and stirring vane rotation, waste oil is stirred and rapidly filtered, when waste oil is filtered from pre-filter core, depth filter core, adsorption filter core and fine filter core in turn, and is discharged from the oil discharge port in the bottom of filter bucket, and in order to avoid causing blockage, when transmission rod rotates, the first spur gear outside is driven to drive second spur gear and gear ring rotation, and when gear ring rotates, scraper between each filter core is driven to rotate, so that each layer filter core is cleaned, avoid causing blockage.

To provide a method for producing extracellular vesicles derived from plants, mushrooms, or microalgae. [Solution] A method for producing extracellular vesicles, comprising the steps of passing a crushed liquid of plants, mushrooms, or microalgae through a depth filter, and ultrafiltration of the crushed liquid after passing through the depth filter, wherein the depth filter is composed of filaments.

The present invention relates to hollow fiber tangential flow depth filtration media suitable for perfusion biological treatment, and related TFDF filtration units, biological treatment systems, and methods, including methods for perfusion of cell cultures. The hollow fiber elements of the present invention combine relatively thin porous walls with relatively low porosity to provide a filter media that resists fouling during perfusion of a culture.

This utility model discloses an intelligent sewage discharge device for monitoring water quality in municipal water supply networks, belonging to the field of municipal water supply sewage discharge technology. The device includes a connected integrated crushing box and a filter box. Inclined filter plates and vertical depth filter plates are arranged at intervals along the water flow direction inside the filter box, dividing the interior into first, second, and third zones. A sewage outlet is located at the bottom of the filter box, and a return outlet is located at the top. The outlet is connected to the downstream pipeline and the return pipe via a three-way valve, with the other end of the return pipe connected to the return outlet. The sensing unit of the water quality detector extends into the third zone to monitor water quality in real time. When the water quality fails to meet standards, the three-way valve switches the water path, and the water flows back to the second zone through the return pipe to flush the filter plates. Simultaneously, the water participates in filtration again until the water quality meets standards, at which point water supply is restored. This device realizes online water quality monitoring, automatic return and reprocessing of substandard water, and online sewage discharge using return flushing, reducing the risk of filter plate clogging and ensuring a continuous supply of qualified water to the pipeline network.

The application discloses a rapid detection method of high-spectrum-range high-cut-off filter, a to-be-detected sample is installed on a detection platform, a light source emits composite light of a wide spectrum, the composite light passes through a collimating light path and then passes through the to-be-detected sample, the composite light enters a fiber spectrometer in a reflection or transmission mode, the fiber spectrometer can perform spectroscopic detection on the composite light and obtain data of different wavelengths of the composite light. The detection method can be used for batch rapid and accurate detection of high-cut-off depth filters greater than OD4, is simple and convenient to operate, and is low in detection cost; meanwhile, the detection speed is fast, each to-be-detected sample only needs 1-5s to complete detection, the detection error is controllable, and the demand of industrialized batch rapid full-sample detection can be met; meanwhile, different shaping filters and reference attenuation filters can be replaced to meet the demand of detection of different to-be-detected wave bands, and the application range is wide.

The present disclosure relates to hollow fiber tangential flow filter units, including hollow fiber tangential flow depth filter units, for various applications, including bioprocessing and pharmaceutical applications, systems employing such filters, and methods of filtration using the same.

To provide a filter which can efficiently remove metal ions in a processing liquid and can easily obtain a solution having an extremely low metal ion content. A depth filter including a porous molded article. The porous molded article is a sintered material of a mixed powder or a swollen material of the sintered material. The mixed powder contains a dry gel powder and a thermoplastic resin powder. The dry gel powder contains an ion exchange resin having a sulfonic acid group and a nitrogen-containing chelating resin.

The utility model relates to the technical field of filter grids, and discloses a filter grid with a cleaning structure, which comprises a filter grid mounting frame, a filter grid plate is fixedly mounted on the inner wall of the filter grid mounting frame, and filter holes are uniformly formed in the outer wall of the filter grid plate at equal intervals. Micro sliding grooves are uniformly formed in the front surface of the filtering grating plate at equal intervals. The spray-washing pipe head is matched with a small water pump, cleaning liquid is sprayed at high pressure, the spray-washing pipe head can go deep into filtering holes, small impurities can be conveniently removed, the problem that a traditional filtering grating is prone to being blocked is solved, the filtering efficiency is effectively maintained, the cleaning liquid bottle is matched with the clamping type cleaning liquid bottle, the cleaning liquid bottle is convenient to replace, meanwhile, the sewage collecting tank is provided with two grooves, and the cleaning effect is good. Impurity sewage generated by scraping and cleaning is collected respectively, centralized treatment is facilitated, the risk of secondary pollution is reduced, and the effects of improving the cleaning efficiency and reducing the maintenance cost are achieved.

The present application relates to drinking water heating appliance technical field, specifically to a kind of electric kettle with multifunctional kettle cover, including kettle body, spout, handle, kettle cover, the spout is installed to kettle body outer wall one side, the handle is installed to kettle body outer wall other side, the kettle cover is installed to kettle body top, locking buckle assembly is arranged between the kettle cover and kettle body: the kettle cover is provided with water outlet filter assembly corresponding with spout, the bottom of the kettle cover is equipped with flow guide frame, the outer wall bottom of the flow guide frame is provided with steam into water filter assembly;The present application is filtered by setting water outlet filter assembly and steam into water filter assembly in kettle cover and using depth filter plate structure of coarse filter layer, middle filter layer, precision filter layer step-by-step compound, can carry out multilevel progressive purification to water body when adding water, effectively intercepts impurities, simultaneously, drainage outlet and limiting groove cooperate to realize flow guide and positioning, prevent steam condensate backflow, keep the inside of kettle cover dry and clean.