Patent ID: 7743469

Claim:
An apparatus on a textile machine for cleaning fibre material, wherein the apparatus comprises: a first rotating roller arranged to convey a travelling fibre web; a second rotating roller co-operating with the first roller to form a first nip, the second roller rotating slower than the first roller; a third rotating roller co-operating with the second roller to form a second nip and with the first roller to form a third nip, the second roller being downstream of the third roller; and a drive arrangement arranged to rotate at least one of the second and third rollers in the opposite direction to the direction of rotation of the first roller; the arrangement being such that fibre material is opened and detached by the second roller at the first nip, and the detached fibre material is conveyed by the second roller to the second nip and is conveyed by the third roller to the third nip, where it is transferred back to the first roller; and the rollers having a clothing with clothing tips, the front surfaces of which are inclined at an acute angle in the direction of rotation, the clothing tips of the first and second rollers being inclined in different directions in the region of the first nip, and the angle of inclination of the clothing tips of the second roller being about from 10° to 50°.