De-inking screen
AssigneeBulk Handling Systems, Inc.
InventorsEngel Visscher, Sean Austin
Life of this patent
Estimating the term…
Abstract
Multiple shafts are aligned along a frame and configured to rotate in a direction causing paper products to move along a separation screen. The shafts are configured with a shape and spacing so that substantially rigid pieces of the paper products move along the screen while non-rigid pieces of the paper products slide down between adjacent shafts. In one embodiment, the screen includes at least one vacuum shaft that has a first set of air input holes configured to suck air and retain the non-rigid paper products. A second set of air output holes are configured to blow out air to dislodge the paper products retained by the input holes.
Claims19
A material separation screen, comprising:
- multiple shafts aligned along a separation screen frame and configured to rotate in a direction causing paper products to move along the separation screen, the shafts configured with a shape and spacing so that substantially rigid pieces of the paper products move along the screen while non-rigid pieces of the paper products slide down between adjacent shafts.
A method for separating materials, comprising:
- loading materials onto a screen having multiple spaced apart shafts;
- rotating the shafts so that the materials move from an in feed end toward an out feed end;
- and
- spacing the shafts so that rigid and semi-rigid materials are carried to the out feed end of the screen while more flexible and malleable materials slip down between the shafts before reaching the out feed end of the screen.
A vacuum shaft assembly for a material separation screen, comprising:
- a shaft body including a hollow middle section and holes that extend through the shaft body;
- an air pump fluidly coupled to the hollow middle section and configured to suck air through the holes and retain de-inking materials that are transported over the shaft body.
Dependencies are inferred from the claim text.