Method and equipment for removing small particles of dirt from textile machines

The invention concerns eliminating impurities, in particular dust and / or very small fibres in a fibre strand when spinning fibres from a fibre sliver in the opener device (2) of the rotor spinning machine, where a fibre sliver is fed to the toothed coat (23) of the roller combing through which the individual strands in the combing zone (26) are pulled out of the clamp by the strand feed device and are guided in the opener device along the primary shedding region (3) to eliminate small and very small impurities and subsequently run along the secondary shedding area (5) to exclude other impurities. In the primary deposition area (3), the under-pressure air from the central dirt and dirt channel (6), acts on the detachment zone (26), where the fibres and impurities in the secondary deposition region (5) are subjected to centrifugal force and under-pressure air from the central channel (6). The invention also concerns a device for carrying out this method in a spinning unit of an open-end rotor spinning machine