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US 5,358,637 AGranted
Apparatus for sorting and deflaking fibrous suspensions
AssigneeHerman Finckh Maschinenfabrik GmbH & Co.
InventorsHagen Hutzler, Erich Czerwoniak
Life of this patent
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Abstract
An appliance for sorting and deflaking fiber suspensions has a rotor with a horizontal axis rotatively mounted in a housing. In a first, inlet rotor zone the rotor is provided with entraining means for extracting by centrifugation contaminating particles of high relative density. The rotor is surrounded donwstream by a screening cylinder and is also provided with entraining means for the fiber suspension, which deflake and sort out the fiber suspension in a second rotor zone. In a third rotor zone the fibers are washed out of the rejects after water has been added and in a fourth zone the rejects are dehydrated.
Claims26
An apparatus for sorting and deflaking fibrous suspension, comprising:
- at least one annular screen;
- a housing accommodating said screen and having a first and a second housing end region, said housing including an inlet for the fibrous suspension to be processed being disposed proximate said first housing end region, an accepted material outlet for receiving a sorted suspension portion passed through said screen, and a rejected material outlet for receiving a rejected suspension portion not passed through said screen, said rejected material outlet being disposed proximate said second housing end region;
- rotor means mounted within said housing for rotation about a substantially horizontal rotor axis for sorting and deflaking fibrous suspension, said rotor means having
- (a) a first rotor region facing said first housing end region with projections for circulating the suspension to be processed, said first rotor region being surrounded by an annular housing wall section with a bottom zone having an outlet opening, said projections centrifuging impurity particles having at least a predetermined specific weight against said annular housing wall section;
- (b) a last rotor region facing said second housing end region with projections disposed at a periphery of the last rotor region for circulating said rejected suspension portion in an annular chamber between the last rotor region and a portion of said screen surrounding said last rotor region for draining the rejected suspension portion;
- and
- (c) an intermediate rotor region for sorting the fibrous suspension and for deflaking and disintegration of fiber agglomerations contained in the fibrous suspension to be processed, said intermediate rotor region having projections disposed at a periphery of the intermediate rotor region for effecting deflaking and disintegration of fibre agglomerations and being surrounded by a portion of said screen which has an inlet side facing said intermediate rotor region and an outlet side which is in communication with said accepted material outlet.
4 more elements
Apparatus for sorting and deflaking fibrous suspension, comprising:
- at least one annular screen;
- an annular housing including first and second end segments and an intermediate segment, an inlet for receiving the fibrous suspension disposed in said first end segment, a first rejected material outlet disposed in said first end segment, an accepted material outlet disposed in said intermediate segment, and a second rejected material outlet disposed in said second end segment, said intermediate segment and said second end segment receiving said annular screen;
- and
- a rotor assembly disposed within said housing about an axis for rotation having
- (a) a separating rotor region facing said first housing end segment including projections for circulating the suspension received from the inlet and passing at least a portion thereof, said projections centrifuging impurity particles having at least a predetermined specific weight toward said first rejected material outlet;
- (b) an intermediate rotor region facing said intermediate housing segment for receiving the suspension portion from said separating rotor region, said intermediate rotor region having projections disposed at a periphery thereof proximate said screen for deflaking and disintegrating fiber agglomerations through said screen to said accepted material outlet and for passing at least a portion of the suspension inhibited by said screen;
- and
- (c) a dewatering rotor region facing said second end segment including projections disposed at a periphery of the dewatering rotor region for receiving and circulating the suspension portion received from said intermediate rotor region and for passing a drained suspension portion to said second rejected material outlet.
5 more elements
Dependencies are inferred from the claim text.