A disc for use in a disc screen is disclosed. The disc has a longitudinal axis and includes a hub extending a length along the longitudinal axis. The longitudinal axis is coaxial with the center of the hub and the hub further includes a hub surface, a major axis defined by a first cross section taken perpendicular to the longitudinal axis and through the center of the hub at and a minor axis defined by a second cross section taken perpendicular to the longitudinal axis and through the center of the hub. The first cross section is longer than the second cross section, and the first cross section is substantially orthogonal to the second cross section. A helical ridge structure extends away from hub surface and twists at least 360 degrees about the longitudinal axis for the length.

Disc for use in disc screen

A disc for use in a disc screen is disclosed. The auger disc includes a central longitudinal disc axis and a hub extending a length along the longitudinal disc axis. The longitudinal disc axis is coaxial with the center of the hub. The hub further includes a hub surface and a helical ridge structure extending away from the hub surface and twisting about the longitudinal axis at least 360 degrees. The auger disc has a disc rotation axis that is parallel to the central longitudinal axis and is offset from the center of the hub. The auger disc is constructed to rotate about the disc rotation axis.

Auger disc for use in disc screen

A disc for a separating conveyor screen has a disc body with an opening in an axial direction for receiving a shaft. At least one anchoring member of the disc has an anchoring portion projecting into the opening in a radially inward direction and has a positioning portion fitted in a disc body of the disc. The anchoring portion has at least one projection in circumferential sense of the opening for anchoring in at least one recess in an outside surface of the shaft. At least one tensioner is provided for tensioning the anchoring member and the disc body radially towards each other. A separating conveyor screen equipped with such discs is also described.

Disc for a separating conveyor screen and separating conveyor screen including such a disc

A disc for use in a disc screen is disclosed that creates an “intended space”—i.e., the designed space through which material is intended to pass—that undulates in both directions in the plane defined by the screen's rotatable shafts. The disc design includes a major axis that is rotated along the length of the shaft, creating a helical ridge. The ridge is continuous and non-stepwise, thereby avoiding the “pinch” of the prior art designs. And by having the helical ridge of adjacent discs on the same shaft with opposing rotations, the lateral movement of material may alternate along the length of the shaft—further spreading the material throughout the width of the disc screen and increasing the screen's efficiency.

Helical Disc For Use In A Disc Screen

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Helical Disc For Use In A Disc Screen