Class 209/303 - Rotating

Subclass of Class 209 - Classifying, separating, and assorting solids
Definition: Cylindrical or drum sifters having vertical axes and adapted
No. of patents: 27
Last issue date: 05/06/2008

Number	Title	Issue Date
7367457	Device for the separation of non-magnetizable metals and ferrous components from a solid mixture and method for operating such device In an arrangement which including a motor-driven system for the separation of non-magnetisable metals, vibrations and resonances which generally are present in such arrangement, are eliminated. This is accomplished by utilizing a drum mounted on and rotating about a...	05/06/2008
7303078	Screen panel A method and apparatus for altering the reflectivity of a screen when light is supplied to a portion of the screen is disclosed. The orientation and shape of wires disposed on at least one bar of the screen is controlled to alter the reflectivity of the screen. Also...	12/04/2007
7156235	Apparatus for and method of classifying particles discharged from a vertical mill A classifier for separating coarse particles from a stream of gas and particles discharged from a vertical mill. The classifier includes a generally cylindrical outer casing having a vertical axis and a vertically oriented sidewall disposed on the mill, an inner cas...	01/02/2007
7017754	Method and apparatus for classifying fine balls and method for producing cylindrical sieve An apparatus for classifying fine balls having diameters of 1 mm or less into those having predetermined diameter ranges, comprising a feeder for supplying fine balls, at least one rotatable cylindrical sieve constituted by a plate with a thickness of 200 μm or les...	03/28/2006
6902126	Hybrid turbine classifier A hybrid turbine classifier for a coal pulverizer includes a cone disposed within the separator body of the pulverizer. The cone extends downwardly from a base to a frustum which forms an opening for depositing coal particles on the grinding table of the pulverizer....	06/07/2005
6702120	Screening apparatus including two screen means Apparatus for separating a fiber suspension is provided including a housing with an upper chamber in the upper portion thereof, a rotor rotatably mounted in the housing, a first rotary screen mounted for rotation with the rotor and dividing the housing in...	03/09/2004
6613191	Pressurized screen and process for removing contaminants from a fibrous paper suspension containing contaminants Pressurized screen to remove contaminants from a contaminant-containing fibrous paper suspension. Pressurized screen includes a housing, a first screen element, essentially axially symmetric and rotatably mounted within housing, and a second screen elemen...	09/02/2003
6332984	Integrated diverter and waste comminutor An integrated system for diverting and reducing the size of waste materials in an effluent stream comprising a frame having a bottom housing and a top housing and mountable in the stream. A grinder unit is mounted to the frame bottom housing and comprises...	12/25/2001
6220446	Particle size classifier A particle size classifier in which feed material composed of product and overs moves downwardly through a separator unit by the action of negative pressures created by a first air blower associated with the collection of product and a second air blower a...	04/24/2001
5667075	Classifying wheel for centrifugal-wheel classifiers The invention concerns the design of classifying wheel made of a waterproof sintered material with vanes arranged in a ring that run parallel to the rotational axis and that are positioned between the hub-bearing circular disc and an annular cover disc, w...	09/16/1997
5657877	Rotary classifier for a roller mill The present invention provides a rotary classifier for a roller mill, in which a rotating vane is formed so that the vane width at the upper part of the rotating vane is larger than that at the lower part....	08/19/1997
5593043	Rotor for mechanical air classifiers A rotor for mechanical air classifiers of the type having a hollow cage-like rotor is provided with a plurality of entering openings for air and classified material, the entering openings being generally equidimensionally shaped....	01/14/1997
5472095	Screening cylinder Screening cylinders for screening lignocellulose-containing fibrous material are disclosed. The cylinders are formed from longitudinal bars separated by gaps, and support rings extending around the circumference of the cylinders to support the bars, as we...	12/05/1995
5443737	Rotary drum with radial spray jets A separation device for suspensions comprises a housing (1), a filter body (3) with a wall of filter material situated in the housing, spray means (14) adapted to spray jets of a suspension to be separated directly onto one side of the wall of filter mate...	08/22/1995
5370791	Backwashable self-cleaning strainer A backwashable self-cleaning strainer has a vertical housing containing a rotatable strainer basket. The housing has an inlet adjacent the top thereof and an outlet adjacent the bottom wall, with a flush discharge opening in the bottom wall. Components fo...	12/06/1994
5271503	Screening device A device for screening pulp suspensions includes a cylindric housing (1) with inject inlet (2), reject outlet (3) and accept outlet (4) and screening members in the form of a stator (5) and a rotor (8). The stator (5) as well as the rotor (8) include a pl...	12/21/1993
5263589	Method of recovering tobacco from stemmery discard A stemmery discard of tobacco and soil particles is fed to an air/centrifugal separator in which a fraction of smaller tobacco particles is recovered with a low amount of soil. The residue from that separator is fed to a screen separator in which a fracti...	11/23/1993
5183568	Self-cleaning strainer A self-cleaning strainer comprises a vertically disposed housing which contains a rotatable strainer basket. The housing has an open top, closed by a closure plate, an inlet adjacent the top of the housing and an outlet adjacent a closed bottom of the hou...	02/02/1993
4957618	Vertical screening device Vertical screening device (1) having at least one cylinder screen (2) and connectible with its lower end portion (8) to a similar screening device or a drive unit and, with its upper end portion (7), to a similar screening device or a distributor device. ...	09/18/1990
4842722	Pressure sorter A pressure sorter for fiber suspensions comprises a rotating screen basket and cleaning blades associated therewith. To improve the operating characteristics, stationary cleaning blades are provided on both the inside and the outside of the screen basket,...	06/27/1989
4830734	Integrated process for the removal of sulfur compounds from fluid streams The present invention relates to a new and integrated process involving the utilization of a primary adsorption bed containing a regenerable, physical absorbent and an auxiliary sorption bed containing a chemisorbent and an optional physical absorbent for...	05/16/1989
4525271	Screening apparatus for grains, seeds or the like materials or granules A screening apparatus for granules or the like material comprises a housing, wherein a frame structure is arranged which is rotatable about a main axis. The frame structure supports a screen drum which is rotatable by means of a shaft arranged eccentrical...	06/25/1985
4487695	Centrifuge screen basket A screen basket for centrifugal deliquefying and/or classifying of particulate solid and solid-liquid mixtures, the basket being fed internally, rotating about a vertical axis and on initial installation presenting for driving engagement with the mixture ...	12/11/1984
4480754	Screening apparatus for grains, seeds or the like crops A screening apparatus for grains comprises a housing, wherein a support structure is arranged which is rotatable by means of a main shaft. The support carries a screen drum rotatably mounted upon a planet shaft arranged eccentrically with respect to the m...	11/06/1984
4461702	Classifier A classifier for separating particulate matter into relatively coarse and fine particles. The classifier includes a casing, at least one cylindrical screen assembly mounted in the casing and extending substantially in the direction in which the particulat...	07/24/1984
4405454	Process and apparatus for the dewatering of solids in suspension A process for the dewatering and particle classification of solids from suspensions, e.g. coal from a slurry in which the coal is transported, makes use of a dewatering centrifuge having two frustoconical centrifuge drum sections of different inclinations...	09/20/1983
4264438	Screen drum and a method for its manufacture A screen drum and a method for its manufacture is disclosed wherein the screen drum comprises at least two cylindrical screen members spaced apart, between which a stiffening ring is disposed. The stiffening ring has two cylindrical surfaces which guide t...	04/28/1981

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Class 209/303 - Rotating