A shaft-mounted conveyor assembly (10) comprises a series of scroll modules (100, 102) arranged in series on a shaft (12) to form a helix having a peripheral surface for contacting a conveyor belt. Each scroll module includes an open hub (120) for receiving the shaft and a webbed scroll portion (110) defining the peripheral surface. The shaft includes L-shaped mounting slots (30) in mounting regions for mounting the scroll modules. A snap-on locking collar (200) prevents axial movement of the scroll modules after installation on the shaft.

A shaft-mounted conveyor assembly (10) comprises a series of scroll modules (100, 102) arranged in series on a shaft (12) to form a helix having a peripheral surface for contacting a conveyor belt. Each scroll module includes an open hub (120) for receiving the shaft and a webbed scroll portion (110) defining the peripheral surface. The shaft includes L-shaped mounting slots (30) in mounting regions for mounting the scroll modules. A snap-on locking collar (200) prevents axial movement of the scroll modules after installation on the shaft.

Device for collecting litter or scrapings, in particular flour or meal, comprising a collecting chute for receiving litter or scrapings, extending in a width direction, a movable catching body extending diagonally from a highest part to a lowest part over an area in which the litter or granule is to be collected and where the lowest part is adjacent to the collecting chute or connects to the collecting chute or discharges into the chute, and a drive unit for moving the receiving body.