A root crop harvester is provided, including a feed conveyor device for conveying conveyable material consisting of harvested crop and additional materials in a feed conveying direction. The root crop harvester also includes a separating device having at least one separating element for separating the additional materials from the harvested crop. The separating device has a conveyable material sensor, which is coupled to a first EDP evaluation unit and, during operation, is directed toward the conveyable material, and which is intended for recording conveyable material data. The conveyable material sensor may be directed toward the feed conveyor device during operation. In addition, the conveyable material sensor may be an optical conveyable material sensor.

System (1) for separating bulk-supplied plant-bulbs into a single-file stream of spaced plant-bulbs and a method for transporting and spacing objects. The system comprises a bulk-conveyor (2) for conveying a plurality of plant-bulbs as a bulk mass; a single-file vibration-trough (3) downstream of the bulk-conveyor, arranged to receive plant-bulbs from the bulk-conveyor and to further convey received plant-bulbs in single-file; a single-file conveyor (4) downstream of the single-file vibration-trough, arranged to receive plant-bulbs from the vibration-trough; wherein the bulk-conveyor has a discharge edge (21) and the single-file vibration-trough is longitudinally aligned substantially parallel to the discharge edge; wherein the vibration-trough is configured to progress the plant-bulbs at a first speed, wherein the single-file conveyor is configured to progress the plant-bulbs at a second speed, and wherein the second speed is higher than the first speed whereby during use plant-bulbs transferring from the vibration-trough to the single-file conveyor are spaced on the single-file conveyor.

System (1) for separating bulk-supplied plant-bulbs into a single-file stream of spaced plant-bulbs and a method for transporting and spacing objects. The system comprises a bulk-conveyor (2) for conveying a plurality of plant-bulbs as a bulk mass; a single-file vibration-trough (3) downstream of the bulk-conveyor, arranged to receive plant-bulbs from the bulk-conveyor and to further convey received plant-bulbs in single-file; a single-file conveyor (4) downstream of the single-file vibration-trough, arranged to receive plant-bulbs from the vibration-trough; wherein the bulk-conveyor has a discharge edge (21) and the single-file vibration-trough is longitudinally aligned substantially parallel to the discharge edge; wherein the vibration-trough is configured to progress the plant-bulbs at a first speed, wherein the single-file conveyor is configured to progress the plant-bulbs at a second speed, and wherein the second speed is higher than the first speed whereby during use plant-bulbs transferring from the vibration-trough to the single-file conveyor are spaced on the single-file conveyor.

Apparatus for cleaning narrow root crops including a roller device with two rotatable rollers forming a separating crop inlet, a separating track, a coarse material outlet, a fine material outlet, and a roller gap, and a conveyor downstream of the roller device. The separating track is formed by the top of the rollers and the fine material outlet is located below the roller gap. The coarse material outlet is at the end of the separating track opposite the separating material inlet. The roller gap is large enough to allow the narrow root crops to pass through to the fine crop outlet and small enough to retain coarse material that has a minimum dimension greater than the maximum root diameter, and transport it to the coarse material outlet. The conveyor is below the roller gap at the fine material outlet and receives all narrow root crops passing through the roller gap.

Apparatus for cleaning narrow root crops including a roller device with two rotatable rollers forming a separating crop inlet, a separating track, a coarse material outlet, a fine material outlet, and a roller gap, and a conveyor downstream of the roller device. The separating track is formed by the top of the rollers and the fine material outlet is located below the roller gap. The coarse material outlet is at the end of the separating track opposite the separating material inlet. The roller gap is large enough to allow the narrow root crops to pass through to the fine crop outlet and small enough to retain coarse material that has a minimum dimension greater than the maximum root diameter, and transport it to the coarse material outlet. The conveyor is below the roller gap at the fine material outlet and receives all narrow root crops passing through the roller gap.