Abstract: A frame assembly for a vibratory separator includes a screen and a pan positioned at least partially below the screen. The frame assembly also includes a ramp positioned at least partially below the screen and at least partially around the pan. The ramp defines an opening therethrough. The pan extends at least partially through the opening of the ramp. The ramp is tilted with respect to horizontal.

Abstract: The present invention relates to an integrated apparatus for monitoring the separation of the solid and liquid phases in a centrifugal by measuring at least one parameter of a filling material inside a centrifugal, the integrated apparatus comprising at least one light source for illuminating at least part of a surface of the filling material, and a light detector arrangement being a adapted to receive light reflected from the filling material. The present invention also relates to an associated method for monitoring and controlling separation of solid and liquid phases in a centrifugal.

Abstract: A mobile screening device for the screening of soil and other materials has a chassis (1), which is carried by at least one wheel (1.1) or a similar member, and a screen frame (2), which is carried by the chassis (1) and which includes at least one screen (5) that is supplied with material to be screened. The screen frame (2) is pivotable around a primarily vertical turning axis (7) in relation to the chassis (1).

Abstract: A classifying device for classifying particles using a centrifugal force contains a microchannel includes a curved portion including a first tubular channel and a second tubular channel; and a diaphragm that is provided within the curved portion, and that is located at a position between the first tubular channel and the second tubular channel; and wherein the diaphragm has at least a first apertured group formed in a central region of the diaphragm and a second apertured group formed in a first end region and a second end region of the diaphragm, the first apertured group and the second apertured group communicate the first tubular channel with the second tubular channel along a direction of the centrifugal force, the first apertured group has a mesh, and the second apertured group has a mesh that is different in size from the mesh of the first apertured group.

Abstract: A device (10) for sieving and/or mixing is disclosed which includes a base (12) and a container (13) mounted thereon for rotation about an axis which is substantially horizontal. The container has a peripheral wall (14) extending angularly about and longitudinally relative to the axis, and an opening (25) extending longitudinally relative to the axis to provide for movement of material into and out of said space. Means to drive the container angularly about the axis are provided so that any material which is introduced into the container may be processed as required by rotation thereof. The peripheral wall is configured with an internal baffle to prevent material from being delivered when the container is rotated one way, but delivers material from within said space through the opening when the container is moved angularly about its axis in the opposite direction being a predetermined direction of rotation for delivery.

Abstract: An apparatus for classifying fine balls having diameters of 1 mm or less, comprising a feeder for supplying fine balls, at least one rotatable cylindrical sieve constituted by a plate having holes and having a center axis inclined relative to a horizontal plane, and a container for receiving fine balls classified by the cylindrical sieve, the fine balls being supplied from the feeder to an inlet of the rotating cylindrical sieve at its upper end, fine balls that have passed through the holes of the cylindrical sieve being recovered by the container, and fine balls that have not passed through the holes being withdrawn from an exit of the cylindrical sieve at its lower end.

Abstract: 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 element, which is essentially axially symmetric. First and second screen elements are successively arranged in suspension flow direction. At least one intake, coupled to housing, supplies suspension to housing, and at least one accepts outlet, coupled to housing, conveys a part of suspension that passes through the second screen element out of housing. At least one coarse reject outlet is located within housing to remove a part of suspension not passing through first screen element, and at least one fine reject outlet is located within housing to remove a part of suspension not passing through second screen element. First screen element includes conical shape with opening angle (&agr;) between about 10° and 170°.

Abstract: Apparatus for continuously separating relatively coarse particles from a suspension of a mixture of particles in a liquid, wherein the suspension is caused to pass through a screening medium which is rotating in its own plane and wherein the screening medium extends over and across the upper end of a rotary drum having generally downwardly depending side walls and wherein the side walls diverge outwardly in a downward direction.

Abstract: A method and apparatus for removing stringy contaminants from a pulp in a wastepaper recovery system having a pulping vat with an elongate helically shaped rod in the vat with means for causing a relative rotation between the stock and the helical rod so that long slender contaminants will be captured and climb the rod. In one form, multiple helices are employed and the rods may be driven in rotation, or the stock caused to rotate about the helix by other means.

Abstract: A disk screen, and method wherein the material, such as wood chips for making paper pulp, is screened through a rotary disk screening bed (12) having zones wherein the space between disk slots (20) decreases from zone to zone as the material passes from the inlet end to the outlet end of the screen. Such spaces may range in zones from 8 mm to 6 mm along the screening bed (12).

Abstract: 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 such that in a first filtering zone the particles are preliminarily dewatered and then pass by automigration to the next centrifuge drum at which further dewatering takes place. The suspension on the first sieve surface forms a thin layer classification zone having a thickness up to 5 mm and in which the coarse fraction is retained while the fine fraction is passed. The coarse fraction automigrates to the next sieve surface where it is dewatered and the fine fraction separated out in the thin layer classifying zone is then filtered under pressure in a subsequent stage.

Abstract: An apparatus for separating particulate or lump material by size having a passage for the material, downwardly defined by a plurality of rotationally drivable discs which are arranged in several rows. The discs in one row mesh with clearance between the discs in the nearest adjacent rows on either side, such that together the discs form a screen extending along the passage from an inlet for the material to be screened to an outlet for lumps of the material which are too large to fall through the screen. The principle axes of the disc rows are oriented in the flow direction of the material through the passage and locate the discs in a flat-sided trough-like configuration. The discs are adapted to be driven in such a direction that they impart to the material on the screen a transverse arching movement upwards and towards both sides of the passage, while the material simultaneously moves towards said outlet.

Abstract: A sieve device for separating a mixture of particulate material in components of different sizes, comprising a perforated sieve surface that rotates around a central, vertical shaft, said sieve surface having the shape of a hollow, truncated cone casing with a downwardly directed top, on which an imperforate distributor cone with an upwardly directed top has been mounted in the middle, of which distributor cone the base connects to the sieve surface, whereas the supply of the mixture to be separated takes place via a central supply tube placed above the distributor cone, whereas the removal of the coarse component takes place near the circumference of the sieve surface.

Abstract: A sizing screen provided with feeder means for causing an even distribution of material onto the screen surface. The feeder means comprises a generally spirally shaped plough which urges material over the edge of a generally circular table the distribution of material being substantially uniform over the edge. The plough has a compaction zone for compacting the material so that urging forces exerted by the plough are not absorbed in the material. A chute which can be stepped feeds material onto the table through the plough.