J. M. Voith Gmbh

Herbert Kinzler

Walter Musselmann

Reimund Rienecker

Josef Tra

A sorting apparatus for sorting fiber suspensions heavily laden with rubbish and other contaminants, which sorter has two successive sorting units each having a ring-shaped strainer space, which are likewise successive, and an accepts space with a rotationally symmetric strainer between the accepts space and strainer space. The first sorting unit is pressurized above atmospheric pressure; diluting water is fed to the second unit strainer space; and a rotating plate is mounted between the first and second sorting units to control the flow between the strainer spaces.

Rejects sorting apparatus

A rotating sorter is provided for the removal of minuscule pollutants from fiber material suspensions by means of a symmetrical fixed filter basket disposed in a fixed spiral-shaped housing and in whose interior a generally vertical axle rotates sorter vanes in close proximity to the filter basket. Fiber material suspension to be sorted is delivered to a generally ring-shaped sorting space formed between the filter basket and housing. The direction of flow of fiber material suspension delivered to the filter basket occurs substantially tangentially thereto and generally perpendicular to the rotating axle, and quality material is sorted into the interior of the filter basket. The apparatus of the present invention is distinguished by an inlet nozzle which communicates with the sorting space through a generally vertically disposed slit, and by the sorting space steadily narrowing or tapering from a width equal to the width of the slit and along the axial length of the filter basket beginning at least at a point level with the slit, whereby the tapering of the sorting space occurs in a spiral fashion in the direction of flow of the fiber material suspension along the filter basket. This results in a higher degree of sorting effectiveness, especially in preventing the removal of long fibers with ejected material.

Rotating sorter for fiber material suspensions

The disclosure concerns an apparatus for separating impurities from a fibrous suspension. The apparatus includes a tiltable housing having a screen basket supported coaxially therein. A rotor is supported inside the screen basket. The rotor has three zones. There is an upstream zone communicating with the fiber suspension inlet, and inlet in the upstream zone is into the interior of the rotor and then outward past sorting vanes formed at the exterior of the rotor in the first zone and inside of the basket. Downstream of the transport vanes is a second baffle zone defined by a closed drum having transport vanes on the outside thereof. The suspension and impurities are moved downstream by the transport vanes in the second zone. Downstream of the second zone is a third zone with further means for moving impurities downstream, comprising either a centrifugal impeller in the form of vanes or a helical ring. The impurities outlet from the housing is downstream of the rotor and at the other end of the housing away from the inlet. The outlet for purified suspension is outside the screen basket nearer the inlet. A weir establishes a level of suspension in the housing.

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Heidenheim, Germany

Herbert Kinzler