56 results about "Stack filters" patented technology

A treating method of waste cathode charcoal blocks is provided. The waste cathode charcoal blocks are from electrolytic tank heavy maintenance slag of an electrolytic aluminium factory. The method includes treating the electrolytic tank heavy maintenance slag to obtain powdered waste cathode charcoal blocks, subjecting the powdered waste cathode charcoal blocks to water leaching to obtain a leachate and cathode charcoal blocks after leaching, performing solid liquid separation after the leachate and a fluorine removal agent are subjected to a curing reaction, returning the filtrate to the leaching step for circulated use, and stacking filter cakes or adopting the filter cakes as a raw material for preparing calcium fluoride. The method adopts a manner of a plurality of times of leaching, thus achieving innocent treatment of the waste cathode charcoal blocks. The filtrate and the filter cakes after leachate treatment can be reused, and the cathode charcoal blocks after leaching can be adopted as fuel for producing alumina. The method overcomes a series of problems caused by stacking of a large amount of the waste cathode charcoal blocks, achieves efficient utilization of the waste cathode charcoal blocks, and is obvious in economic benefit and suitable for industrial production.

A filtering apparatus comprising an elongate container body, an inlet, an inlet reservoir, an outlet, an outlet reservoir, and at least two filter elements, wherein each filter units contains two or more space-apart and co-axially stacked filter elements encased in a cylindrical-shaped filter cartridge. Contaminated fluid flows from the inlet, through the perforations located on the inlet reservoir separator, and into the elongate container body. Fluid flows into the filter units through perforations in the filter cartridge and the open ends of the filter cartridge. The filter units use an opposed axial flow method to draw the fluid through the filter elements. The filtered fluid flows through a perforation in the axial conduit, passes through the axial conduit outlet into the outlet reservoir. The filtered fluid then exits through the outlet. The present invention may be used in operation with a motor and pump to filter large flow rates and volumes of contaminated fluid.

The invention relates to a method for reducing a noise by using the hearing threshold of impaired hearing. The method comprises the following steps of: dividing an input speech signal into N subband signals, compensating the hearing, respectively reducing the noise of the subband signals, and comprehensively processing various paths of input subband signals into a path of output signals by a weighted stacking filter bank. The invention provides a generalized spectral subtraction method according to noise levels and hearing threshold adjustment parameters, wherein a posteriori signal-to-noise ratio is replaced by an a priori signal-to-noise ratio to adjust a gain function, so that musical noise generated by noise reduction can be effectively reduced. The noise reduction gain function is related to the signal-to-noise ratio, and is adjusted according to the noise levels and the hearing threshold of a patient; when the hearing threshold is high, the suppression to the noise is low, and speech distortion is reduced simultaneously; and when the hearing threshold is low, the suppression to the noise is increased so as to improve listening comfort, so that the method has pertinence to different hearing loss conditions and different noise conditions, and makes the suppression effect and the speech distortion relatively balanced.

The invention discloses a stacked filter for an image sensor containing an infrared ray pixel. The stacked filter includes a first filter layer disposed at the IR pixel. The first filter layer allows light with wavelengths of a first band to be transmitted through. The stacked filter further includes a second filter layer stacked with the first filter layer. The second filter layer allows light with wavelengths of a second band to be transmitted through. The first band partially overlaps the second band at wavelengths of a third band. The third band is narrower than the first band and the second band. The stacked filter allows light with the wavelengths of the third band to be transmitted through. Furthermore, an image sensor containing a stacked filter is also provided. The stacked filter is easy to manufacture, and the characteristics of the stacked filter have no relation with the angle of the incident ray and are not influenced by the angle of the incident ray. Therefore, the stacked filter can avoide generation of blue shift situation when an inclined incident ray with a large angle irradiates on the image sensor.

Luminescent solar concentrators in accordance with various embodiments of the invention can be designed to minimize photon thermalization losses and incomplete light trapping using various components and techniques. Cadmium selenide core, cadmium sulfide shell (CdSe / CdS) quantum dot (“QD”) technology can be implemented in such devices to allow for near-unity QDs and sufficiently large Stokes shifts. Many embodiments of the invention include a luminescent solar concentrator that incorporates CdSe / CdS quantum dot luminophores. In further embodiments, anisotropic luminophore emission can be implemented through metasurface / plasmonic antenna coupling. In several embodiments, red-shifted luminophores are implemented. Additionally, top and bottom spectrally-selective filters, such as but not limited to selectively-reflective metasurface mirrors and polymeric stack filters, can be implemented to enhance the photon collection efficiency. In some embodiments, luminescent solar concentrator component is optically connected in tandem with a planar Si subcell, forming a micro-optical tandem luminescent solar concentrator.

The invention relates to an efficient backwashing filtering device and a multilayered filter provided with the device. The efficient backwashing filtering device is provided with a filtering unit, so that high-turbidity circulating water can be filtered and backwashing can be carried out on a fiber filtering material, and therefore, regeneration of the fiber filtering material is realized and the filtering effect is enhanced; in a backwashing process of the fiber filtering material, high-pressure air in a high-pressure airflow pipeline is sprayed out from a nozzle on an outer sleeve, and suspension matters and oil, which are intercepted by the fiber filtering material, can be completely removed, so that the fiber filtering material is completely regenerated; the backwashing time can be greatly shortened and the water use amount of backwashing is saved; the backwashing and pollutant removing effects are relatively good; and the multilayered filter provided with the device comprises a plurality of stacked filtering units, so that the occupied areas of a filter is reduced, the utilization rate of a land is increased and the filtering efficiency is improved.

A stacked-filter image-sensor spectrometer includes an image sensor, a first color filter array, and a second color filter array. The image sensor has a pixel array including a plurality of pixels. The first color filter array has a plurality of first color filters, wherein each first color filter is located above at least one pixel. The second color filter array is located between the first color filter array and the image sensor and has a plurality of second color filters. Each second color filter is located above at least one pixel. Each of the plurality of pixels has thereabove a compound color filter formed of one of the second color filters and one of the first color filters, the second filter having a second passband that partially overlaps a first passband of the first color filter in a first overlapping wavelength range.

The present invention provides a convenient way to filter water in a body of water. The invention combines an encloseable container with an internal pump producing cyclonic action, with two different types of filters. One type of filtering consists of layers of varied porosity, one layer filtering only very fine debris, while the other layers blocking progressively large debris. The other type of filtering involves stacked discs placed to aid in further filtering of the water in the chamber of the cylinder. Water flows around the bottom disc, through holes in the second disc, and around the third disc before approaching the stacked filters of varied porosity. An internal ultra-violet light helps control algae in the water.

During the process of compressing air, atmospheric air along with water vapor and airborne contaminants are ingested into the air compressor. Many of these compressors utilize oil for lubrication, sealing and cooling. A compressor system utilizes drain valves to remove the condensate that accumulates in the system which are typically located on the compressor, moisture separators, coalescing filters, receivers, dryers, and drip legs. While the drain valves successfully remove the condensate, this condensate is now contaminated with lubricant. The compressor system also includes a filter for the removal of lubricant from the condensed water so that the water can be discharged to sewer. The filter is arranged to house a series of vertically stacked filter cartridges, each cartridge structured to pass fluid flow to the other cartridge. The housing is connected to the filter cartridges via a variable length pipe extension dependent on the number of filter cartridges used in an application.

The present invention is a vertically stacking, autoclaveable culture jar suitable for use in the mushroom growing field. The present culture jar has a vessel member or container portion having an opening in its top end that is substantially as large as the cross-section of the container portion. The jar is closed using a stacking filter lid. The filter lid has an upper section configured to receive the bottom end of another vessel member, and a lower section configured as a screw-cap to engage and seal the top end of the container vessel. A filter section disposed between the upper and lower sections of the filter cap, and includes a filter housing and a ventilation chamber. The filter housing holds a filter element, and the interior space vents the enclosed volume of the vessel member to atmosphere through the filter element.

A multi-medium filter comprises a tank body, a water inlet pipe formed at the top end of the tank body, an exhaust pipe formed at one side of the water inlet pipe, and a water drainage outlet formed at the bottom end of the tank body; a filtration screen board is arranged close to the bottom end in the tank body; water drainage caps are arranged on the filtration screen board, a plurality of support tubes are arranged at the bottom end of the filtration screen board, bottom ends of the support tubes are connected with the tank body, a plurality of layers of mutually stacked filtering material screen racks are arranged above the filtration screen board, the filtering material screen racks comprise disc-shaped brackets and grille-shaped supports perpendicular to the disc-shaped brackets, the grille-shaped supports comprise a plurality of staggered plate bodies, top ends of the plat bodies are zigzag, each space separated by the grille-shaped supports of the filtering material screen racks are filled with a filtering material, and the filtering material includes quartz sand, activated carbon or anthracite.

Stacked filters are primary color filters and complementary color filters. Thus it is possible to suppress an increase in spectral characteristics and improve the color reproducibility of the primary color filters.

The invention provides a system and method for dynamically unloading file system filters in a stacked-call-back model where filters are stacked one on top of the other to form a filter stack. A filter manager keeps track of the progress of each I / O operation and calls each filter in turn with the filter returning after it has completed processing the given operation. The filter manager dynamically unloads a filter (or an instance of a filter) that is positioned at any position in the filter stack in a reasonable amount of time while I / O operations are actively being processed. The filter / filter instance can be unloaded with outstanding I / O operations on the filter either hosted by the filter or pended by other filters. I / O operations are canceled, completed or drained in order to unload the filter or filter instance. A filter may veto the unloading of the filter.

A radio frequency interference inhibiting filter for domestic washing machine, which contains passive component and connected circuit, casing, leading terminal containing terminal L of phase line of power supply, terminal N for connecting zero line, terminal A1 for connecting input terminal of one winding of single phase motor, terminal A2 for connecting input terminal of another winding of motor, the passive component containing capacitors and resistors, said filter can effectively inhibit RF interference with low cost, easy use and stable quality.

The invention discloses a cyanide-containing waste water treatment process which includes the steps that cyanide-containing waste water is sequentially treated by an adjusting tank, a first-stage flocculation tank, a second-stage flocculation tank, a sedimentation tank and a filtering tank and then discharged. An alkali adding process is arranged between the adjusting tank and the first-stage flocculation tank, an acid adding process is arranged between the first-stage flocculation tank and the second-stage flocculation tank, a flocculating agent adding process is arranged between the second-stage flocculation tank and the sedimentation tank, and fillers in the filtering tank are helical stacked filtering materials. The cyanide-containing waste water treatment process is simple in process, good in treatment effect, simple in operation and capable of saving energy consumption, the novel helical stacked filtering materials are used as the fillers for the filtering tank, according to the fillers, a membrane is easy to form, and the filters are light.

There is provided herein a system for filtering oils and / or emulsions comprising one or more filtering devices comprising stacked filtering elements adapted to filter oils and / or emulsions, one or more tanks adapted to hold oils and / or emulsions, and one or more pumps adapted to pump oils and / or emulsions.

During the process of compressing air, atmospheric air along with water vapor and airborne contaminants are ingested into the air compressor. Many of these compressors utilize oil for lubrication, sealing and cooling. A compressor system utilizes drain valves to remove the condensate that accumulates in the system which are typically located on the compressor, moisture separators, coalescing filters, receivers, dryers, and drip legs. While the drain valves successfully remove the condensate, this condensate is now contaminated with lubricant. The compressor system also includes a filter for the removal of lubricant from the condensed water so that the water can be discharged to sewer. The filter is arranged to house a series of vertically stacked filter cartridges, each cartridge structured to pass fluid flow to the other cartridge. The housing and the cartridges each having registration surfaces to position the filter within the housing and discourage removal of the same.

Described are illumination systems whereby light spectra from multiple LEDs of various colors can be combined and polarized with minimal components, while substantially reducing the losses for the combining and polarizing. The described systems and methods use polarizing beam splitters (PBSs) with retarder stack filters to combine color and split polarization for mixed light beams in one step, and to ultimately align the polarizations of the several colored light beams.

The invention relates to a sowing method applicable to a small-diameter seed indoor germination test and an application of the sowing method, and belongs to the technical field of plant sowing. The sowing method includes the steps: vertically placing a filter paper roll in a disinfected culture dish close to the edge of the disinfected culture dish; laying fine sand in the culture dish, and stacking filter paper above the fine sand to form a filter paper layer; forming needle holes penetrating the whole filter paper layer in the uppermost filter paper, and sowing seeds in the needle holes; wrapping the culture dish by the aid of a preservative film, enabling the filter paper roll to be exposed, adding water or treatment liquid into the filter paper roll until the filter paper roll is completely soaked, covering a culture dish cover, and placing the culture dish into a culture box. The sowing method is applied to an indoor germination test of dicranostigma henanensis S.Y.Wang et L. H.Wu, the sowing method is combined with a treatment method of dicranostigma henanensis S.Y.Wang et L. H.Wu seeds, and the germination rate of the dicranostigma henanensis S.Y.Wang et L. H.Wu seeds can beremarkably increased, so that dicranostigma henanensis S.Y.Wang et L. H.Wu is further tested and researched.

The invention relates to a filter device for sewage treatment, comprising a filter core. The upper end and the lower end of the hollow filter core formed by stacking filter plates are respectively connected with an open head and a closed head, the inner surface and the outer surface of the filter core are respectively provided with circular grooves at a certain intervals along the axis direction, and an inflatable airbag is mounted in the hollow cavity. The invention has the advantages of simple structure, good filtration effect, reliable performance, and the like, is convenient for backwash, realizes pressure equalization and filter gap balance in the backwash process and prolongs the service life of the filter core.

The invention relates to a high-efficiency condensing device for a water reducer. The high-efficiency condensing device comprises a reaction kettle, a material storage box connected with the reaction kettle, and a cooling device connected with the material storage box; a filter device is arranged on one side of the cooling device; the cooling device comprises a cooling tank; the cooling tank is composed of an inner liner and an outer liner, the lower part of the inner liner is connected with the material storage box through a liquid inlet pipe, the inner liner is provided with a plurality of mutually stacked filter plates, and two sides of each of the top and the bottom of the inner liner are each provided with a liquid outlet pipe; the liquid outlet pipes communicate with a cavity between the inner liner and the outer liner; the cavity between the inner liner and the outer liner is internally provided with a plurality of mutually parallel and mutually staggered cooling plates; a gap is left between each two adjacent cooling plates. The cooling tank of the condensing device is directly connected with the reaction kettle through the material storage box, the water reducer entering the cooling tank is firstly filtered by the filter plates in the inner liner, and the water reducer after filtration enters the cavity between the inner liner and the outer liner and is cooled by the cooling plates; the cooling tank achieves the integration of filtration and cooling of the water reducer, the structure is simple, and the use efficiency is high.

A system for separating waste materials from a flowing stream of surface water comprises a vertical cylindrical vessel (300) and a vertical structure (330) within the cylindrical vessel. The vertical structure comprises an overflow structure with stacked filtering elements (235, 240) and weirs (222,224), sized to accommodate normal and increased fluid flow for abnormally high surface water flow conditions. The flowing stream containing waste material under normal flow conditions enters the vessel and passes through a filtering wall portion (332) in a lower section of the vertical structure and exits through an effluent pipe (321). Under higher flow conditions the water flows through the overflow structure mounted on top of the lower cylindrical structure which still filters some of the waste material out of the stream of surface water prior to discharge into the effluent pipe.

The invention discloses a high-efficiency compact type solid state high-frequency induction welder comprising a power cabinet and a water system, wherein the power cabinet is integrated for integrating a power supply, rectification and inversion; and a power cabinet body comprises a left-side cabinet and a right side cabinet. The left-side cabinet mainly forms an inversion function and is responsible for inverting a direct current signal into a high-frequency signal and outputting. The right-side cabinet is internally divided into a front part and a rear part by a mounting plate; and the front part is mainly formed by a main loop and is responsible for rectifying the power frequency alternating current to form a direct current signal for inverting. A front panel of the mounting plate is sequentially provided with two parallel auxiliary power panels, four up-down stacked filter capacitors, three up-down stacked pulse transformers, a power supply buffer assembly, a voltage and current sampling plate, a pulse trigger plate and a silicon controlled controller assembly from left to right; and a rear panel of the mounting plate is a control panel which is respectively provided with an alternating current low-voltage control device and a direct current low-voltage control device. The water system comprises a water inlet pipe and a water outlet pipe which are respectively arranged in the front and at the back of the left-side cabinet.

The invention relates to a tap water purifying device. The tap water purifying device comprises a shell, wherein a placement groove is arranged in the shell; a purifying tank is arranged in the placement groove; the top part of the purifying tank communicates with one end of a water pipe; the other end of the water pipe communicates with a tap water pipe; three filtering plates are vertically andalternately arranged in the purifying tank from top to bottom; the lower end of the interior of the placement groove corresponding to the purifying tank is provided with a water storage groove which communicates with the bottom part of the purifying tank; one side of the placement groove is provided with a filtering tank; a plurality of successively-stacked filtering membranes are arranged in thefiltering tank; one end of the filtering tank far away from the placement groove is provided with a faucet; and the filtering tank communicates with the faucet. Compared with the prior art, the tap water purifying device provided by the invention can improve the effect of filtering and guarantees the pureness of water.

The invention belongs to the technical field of drip irrigation equipment purifying devices and particularly relates to a filtering and purifying system for drip irrigation equipment. The filtering and purifying system comprises an anti-scale stacked filter, a cyclone dust collector, a water inlet pipe, a telescopic water inlet, a four-way valve, a blow-off pipe, a circulating pump, a circulating pump valve and a main water outlet pipe, wherein the telescopic water inlet is arranged at an inlet of the cyclone dust collector, and an outer pipe is connected with the main water inlet pipe; various ends of the four-way valve are connected with a water outlet of the cyclone dust collector, a water inlet of the anti-scale stacked filter, the circulating pump and the blow-off pipe separately; and a water outlet end of the circulating pump passes through the circulating pump valve to be connected with an inner pipe of the telescopic water inlet. Through the circulating pump device, the series stacked filter and cyclone dust collector can be at the optimum operating velocity, the equipment purifying efficiency is improved; and a cultivation structure and after-treatment structures of inactivation and ion exchange resin are arranged for the stacked filter device, so that low-cost water softening is achieved and the soil salinization possibility is reduced.