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.

The invention relates to a cast and adjacent casts on a shaft for providing a shaft assembly for a disc screen. A cast which is placeable on a shaft for a disc screen comprises a screening element part with an integral sleeve part. The shaft assembly for a disc screen comprises casts placed on the shaft, each cast comprising a screening element part and an integral sleeve part, the casts being placed against each other so that abutting screening element parts of two adjacent casts constitute a screening element, and abutting sleeve parts of two adjacent casts constitute a sleeve element on the shaft.

The invention relates to a cast and adjacent casts on a shaft for providing a shaft assembly for a disc screen. A cast which is placeable on a shaft for a disc screen comprises a screening element part with an integral sleeve part. The shaft assembly for a disc screen comprises casts placed on the shaft, each cast comprising a screening element part and an integral sleeve part, the casts being placed against each other so that abutting screening element parts of two adjacent casts constitute a screening element, and abutting sleeve parts of two adjacent casts constitute a sleeve element on the shaft.

A disc and spacer for transporting materials on a roller screen. The disc includes a circular main body and a wear resistant portion. The circular main body has a centrally arranged opening, through which opening a centrally arranged imaginary axis extends. The wear resistant portion is arranged around the circular main body and includes a plurality of protuberances that are circumferentially arranged along the periphery of the wear resistant portion and which, project radially outward from the main body. The wear resistant portion has a first material and the main body has a second material, the first and second materials having different wear resistant properties.

A disc and spacer for transporting materials on a roller screen. The disc includes a circular main body and a wear resistant portion. The circular main body has a centrally arranged opening, through which opening a centrally arranged imaginary axis extends. The wear resistant portion is arranged around the circular main body and includes a plurality of protuberances that are circumferentially arranged along the periphery of the wear resistant portion and which, project radially outward from the main body. The wear resistant portion has a first material and the main body has a second material, the first and second materials having different wear resistant properties.

An apparatus/system for separating a mixture of solid materials has a screening bed, an expansion chamber in gaseous communication with the screening bed, a filter in gaseous communication with the expansion chamber, an air flow producer in fluid communication with the filter. The screening bed includes a star-shaped agitators and the air flow is a vacuum from the screening bed through pathway.

A separation apparatus 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 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.

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.

A dirt removal and piling machine is ideally suited for use in cleaning and piling individualized and non-uniformly shaped workpieces, preferably sugar beets but also potatoes, other tuber crops, and even with aggregate rocks for a tilting receiving station. A further aspect of the present machine includes a workpiece unloading or receiving station which can tip sideways after a dump truck unloads the workpieces and longitudinally drives therethrough. In another aspect, the machine also includes a cleaning station having rotatable rollers, an underlying dirt conveyor and a moveable dirt dumping conveyor, hopper or bucket adjacent an end of the dirt conveyor and external to the rollers. Furthermore, another aspect of the machine includes an automatic and/or robotic sampling arm which is operable to remove a tuber crop workpiece sample and automatically package the sample after the sample has moved through a cleaning station.