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.

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.

A screening bucket comprises a main structure which includes a collecting portion for the material to be screened and a receiving member in which there is collected the material which is subjected to sieving and which has a discharge opening for the screened material. A plurality of rotating elements are arranged in the region of the discharge opening and are supported in a removable manner on pairs of opposing bearing groups. The bearing groups comprise a bearing and a rotatable support, to which there is connected an end of the rotating element by means of a male/female connection, wherein the rotatable support further comprises a locking portion which is capable of being retained by means of a corresponding retention device so as to prevent the rotation of the rotatable support when the rotating element is removed.

A self-cleaning apparatus for sorting a mixture of materials is disclosed that comprises a material sorter and a gantry positioning system elevated above the material sorter. The gantry positioning system includes a longitudinal travel rail with a longitudinal travel rail carriage, a traverse travel rail with a transverse travel rail carriage connected to the longitudinal travel rail carriage running perpendicular to the longitudinal travel rail, and a vertical travel rail connected to the vertical travel rail carriage running perpendicular to the traverse travel rail. A cutter and, optionally, a picker, are connected to the vertical travel rail. The gantry positioning system can move the cutter and picker various directions to dislodge and remove material that may have accumulated on the sorter. Instead of a gantry positioning system, the apparatus may have a multi-axis arm.

A disc for use in a disc screen is disclosed. The disc includes a longitudinal disc axis and a hub extending a length along the longitudinal disc axis. 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. A cross-section of the hub taken perpendicular to the longitudinal disc axis is non-circular.

A disc for use in a disc screen is disclosed. The disc includes a longitudinal disc axis and a hub extending a length along the longitudinal disc axis. 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. A cross-section of the hub taken perpendicular to the longitudinal disc axis is non-circular.

The invention relates to an apparatus for classifying (1) material to be classified, preferably into two fractions, preferably of soil, such as sticky, clayey soil, especially intended for use in a quarry, having a machine frame (2) and having at least two spiral shafts (3) rotatably mounted on the machine frame (2), wherein at least one spiral shaft (3) comprises a core tube (5) having at least one outer screw helix (4) and at least one bearing journal (6). According to the invention, it is provided that the core tube (5) is mounted elastically relative to the bearing journal (6) by means of at least one elastic bearing means (7).

The invention relates to an apparatus for classifying (1) material to be classified, preferably into two fractions, preferably of soil, such as sticky, clayey soil, especially intended for use in a quarry, having a machine frame (2) and having at least two spiral shafts (3) rotatably mounted on the machine frame (2), wherein at least one spiral shaft (3) comprises a core tube (5) having at least one outer screw helix (4) and at least one bearing journal (6). According to the invention, it is provided that the core tube (5) is mounted elastically relative to the bearing journal (6) by means of at least one elastic bearing means (7).

Described is a separation apparatus for a harvester, for separating berries from other plant matter from harvested plant material, the apparatus comprising a conveyor system that defines a first separation system, a second separation system located at least partially above the first separation system comprising an array of rotatable rollers to convey harvested plant material in an upstream to downstream direction, the rollers spaced apart to provide a plurality of openings permitting the transit of separated berries through the berries while preventing the transit of other plant matter, a third separation system in the form of a de-stemming unit downstream of the second separation system, a plant matter distribution system, for distributing plant matter away from the collection apparatus, wherein berries pass through any one or more of the first, second and third separation systems for collection in the collection unit.

A screening bucket having a box-shaped bucket body defining a loading compartment and an unloading opening is provided. The screening bucket has a screening unit for screening debris material, having at least one screening shaft rotatable about a rotation axis, and at least one pinion, mounted on the screening shaft. A plurality of screening blades connected to the screening shaft extend along a radial direction orthogonal to the rotation axis. Drive and transmission elements generate and transmit rotary motion to the at least one pinion. At least one screening blade of the plurality of screening blades has two screening half-blades connected to the screening shaft. Each screening half-blade is connected to the screening shaft approaching the screening shaft along the radial direction. Each screening half-blade is connected to the screening shaft by a positive mechanical connection that is reversible to allow each screening half-blade to be disconnected from the screening shaft.