Pneumatic vortex yarn spinning device - having axially inner wall of head spaced less than the internal dia. of spinning chamber from upper edge of tangential yarn supply spigot

摘要

Pneumatic vortex spinning device having a cylindrical vortex chamber fitted with tangential convergent fibre supply spigot and a co-axial heat provided with a discharge channel and located at the upper part of the chamber is arranged such that the distance 1 between the inlet to the discharge channel and the upper edge of the outlet of spigot corresponds to 0.2 to 0.8 of internal dia. of the chamber. Pref. the axial wall of the head facing the chamber is spherical, this configuration leading also to improved twisting conditions. Twisting of spun yarn is maintained at an optimal level.