Class 210/326 - Drum type on parallel axis

Subclass of Class 210 - Liquid purification or separation
Definition: Apparatus comprising plural rotary filter drums arranged
No. of patents: 29
Last issue date: 10/23/2007

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Number	Title	Issue Date
7285180	Perforated deck made out of a plurality of segments A cylindrical rotating thickening device including an axial core, a plurality of longitudinally extending spaced apart support ribs extending radially from the axial core, and a shell surrounding the support ribs and supported thereon. The shell includes a plurality...	10/23/2007
7247245	Filtration cartridge and process for filtering a slurry A depth filter design is disclosed which has little if any open void area upstream of the media. Preferably, it also has little if any open void area downstream of the media as well. A preferred embodiment uses layers of stacked, fibrous media with several of the la...	07/24/2007
7153425	Process and filter for filtering a slurry The present invention comprises a process for filtering a slurry and a filter cartridge construction for filtering a slurry having a filtration medium formed of a depth filter such as a cylindrical seamless fibrous depth filter comprising a nonwoven fibrous mass, wo...	12/26/2006
7097046	Automatically cleaning filter assembly for a liquid-carrying loop A filter assembly for an aquarium has a self-cleaning filter. A fine mesh filter screen is disposed between an inlet and an outlet for filtering solid matter from the water that is pumped from the aquarium, through the filter, and back to the aquarium. When the filt...	08/29/2006
7063685	Hemostasis valve for a catheter A hemostasis valve that is closed when not accessed, but which provides an unobstructed fluid pathway when accessed by a luer fitting/connector. An auto-closure valve within the hemostasis valve housing is flush with a top surface thereof, allowing easy cleaning (sw...	06/20/2006
6660161	Dewatering device Apparatus for pressing liquid from a liquid containing material is disclosed including a pair of juxtaposed rotary rolls forming a nip, at least one of the rolls being liquid permeable, that roll including an abduction surface extending laterally across t...	12/09/2003
6631810	Sealing arrangement for a pulp dewatering arrangement The arrangement is for washing and dewatering a fiber pulp suspension. The arrangement comprises two hollow, circular-cylindrical screen members that have evacuation chambers arranged inside the screen members for leading off liquid. The screen members ro...	10/14/2003
6402894	Sealing arrangement for pulp dewatering arrangement Arrangement 1 for washing and dewatering a fiber pulp suspension, which arrangement comprises two hollow, circular-cylindrical screen members 2a, 2b delimited by envelope surface and end walls. The screen members rotate towards each other to form a nip 10...	06/11/2002
6261454	Device for treating, in particular washing, gluten or the like Device for washing gluten, provided with at least one drum screen rotatably supported on a corrosion-resistant shaft, and equipped with means for supplying and discharging washing water and also with means for supplying the material to be treated at the o...	07/17/2001
5670043	Multi-function self-cleaning fluid treatment system and method for using the same A multi-function fluid treatment system which can filter fluids or diffuse gases into liquids. To achieve filtration, the system includes a housing with multiple filter cartridges therein. The cartridges are connected to a drive system which rotates them ...	09/23/1997
5637213	Immersible filter drum unit and method for assembling thereof Filter apparatus for filtering contaminants from a fluid, such as machine tool coolant, are disclosed. One filter apparatus includes a filter drum unit having a generally cylindrical open perforated support sheet with a cylindrical screen element mounted ...	06/10/1997
5603846	Fractional filtration method and fractional filtration apparatus A fractional filtration apparatus, used for obtaining cutting oils fractionally cleaned by using one filtration apparatus so as to reuse the separated cutting oils in accordance with the types of machining operations, includes a plurality of liquid tanks ...	02/18/1997
5387339	High efficiency liquid filtration system and method for using the same A high efficiency, self-cleaning system for separating solid materials from liquids. The system includes a primary housing having at least one inlet and a plurality of cylindrical filter cartridges therein which are directly adjacent to and in close proxi...	02/07/1995
5360620	Method for wetting and dissolving dry particles This invention is directed to an apparatus and method for wetting and dissolving finely divided dry particles, including hygroscopic particles such as coffee fines, in a liquid, including viscous liquids such as concentrated coffee liquor, in a manner in ...	11/01/1994
5213685	Cycle of filtration for liquids containing solids in suspension and rotary filter suited to realize said cycle of filtration A cycle of filtration is realized for liquids containing solids in suspension and a rotary filter, suited to realize and cycle, where the filtration is carried out by a rotary drum fitted with a filtering surface (2), immersed in a tank containing the liq...	05/25/1993
5021158	Process and apparatus for the separation of mixtures of substances Process and apparatus for the separation of mixtures of substances by means of centrifugal forces, particularly for the filtration and/or sedimentation of solids from suspensions, wherein the material mixture is rotated in a cake-forming chamber until a c...	06/04/1991
4861433	Dewatering press with perforated metal outer shell and resilient elastic mounting means A pulp dewatering apparatus is constructed of two press rolls arranged juxtaposed to define a nip region. At least one of the press rolls is constructed of a perforated metal outer shell surrounding a substantially rigid inner roll body. A layer of elasti...	08/29/1989
4589923	Apparatus for removing liquid from fibrous materials Liquids, such as sugar cane juices, are removed from fibrous materials by an apparatus which receives the fibrous, felt type or matted materials in strand form, for example from a sugar cane diffuser. Two hollow compression rollers having perforated circu...	05/20/1986
4568459	Filtering device A filtering device for filtering solids from liquids or liquid-like materials comprising a housing within which a filter member is rotatably mounted. The filter member which is traversed radially by the material to be filtered, comprises an outer sleeve m...	02/04/1986
4545908	Label disposal filter An apparatus for separating loose paper pieces from a bath of caustic soda including a tank with a hopper-like structure disposed at the top of the tank. A helical screw conveyor is operatively disposed below the hopper and has its discharge exteriorly of...	10/08/1985
4543161	Double cylinder press for formation of fibrous layers A double cylinder press for the formation of fibrous layers is capable of extracting fibers from fiber-containing liquid, causing the fibers to be adsorbed on the surfaces of wire gauzes 41 of cage cylinders 40 disposed in a stationary butt 10 and a swing...	09/24/1985
4440637	Rotary grain screeners A rotary grain screener is disclosed in which a reverse drive transmission assembly is provided at one end of the screener and in which a second drive transmission assembly is provided at the opposite end of the screener for driving an outer drum, an inne...	04/03/1984
4376704	Vacuum double drum filter A double drum vacuum filter with drums positioned parallel to one another with a gap therebetween and rotating in opposite directions with suction applied within the foraminous drums to remove filtrate from a solid which forms on the surface with tapered ...	03/15/1983
4283285	Apparatus for the production of molded bodies from filter cakes An apparatus for producing agglomerates from a rotary filter such as a rotating filter drum, which includes a perforated filter member on the filter, a slotted member disposed on the filter member and a sludge or slurry storage means disposed above the sl...	08/11/1981
4242204	Apparatus for separation of material suspended in liquids A rotary drum vacuum filter separator for treating suspensions such as waste water from households or industry. The separator comprises a pair of cooperating counter-rotating drums, of which at least one is a filter drum, in which stationary shield walls ...	12/30/1980
4176067	Label accumulator and caustic separator An apparatus is presented for separating loose paper pieces from a bath of caustic soda, such as is ejected from a bottle washing machine including a housing having a reservoir in its upper portion, the reservoir having finely perforated bottom walls slop...	11/27/1979
4102791	Double drum vacuum filter A double drum filter of the vacuum type which includes a pair of oppositely rotating foraminous surfaced drums having their foraminous surfaces in substantially abutting contact, the faces of the drums being connected to one another by means of baffle pla...	07/25/1978
4066555	Rotary filter An improved rotary filter is cylindrical in shape, and operates by vacuum suction or otherwise to withdraw fluids from a substance exposed to the outer area of the device, drawing said fluids into the filter to be pumped out to a suitable reservoir. It in...	01/03/1978
4031013	Method and apparatus for fiber suspension dewatering A method and apparatus for dewatering of cellulose pulp or other fiber suspensions. A suspension of relatively low solids concentration is passed into a sealed housing through an inlet, substantially filling the housing. The suspension is dewatered by bri...	06/21/1977

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Class 210/326 - Drum type on parallel axis