Spinning nozzle

摘要

The subject of the invention is a spinning nozzle for pneumatic bundle yarn production, having a nozzle body (1) which is mounted in a carrying body (2) and of which the spinning chamber (4) terminates in a central end outlet opening (5) and exhibits, behind its inlet opening (3), apertures of compressed-air-supply ducts (6) as well as approximately radial outlet bores (11), having an expansion chamber (12) which is arranged in the carrying body coaxially with respect to the spinning chamber, and having an additional absorption chamber (13) which is in connection with the expansion chamber via an overflow opening (14) and exhibits an end cover (16) with yarn draw-off opening (17) as well as a lateral air-discharge duct (19). According to the invention, the expansion chamber (12) is delimited in the central part by an inner cylindrical wall (25) which belongs to the carrying body (2) and which is adjoined, on the one hand, by an inlet wall (26) which widens from its start (28) on the tubular casing (10) of the spinning chamber (4) to its end (29) where it makes the transition to the cylindrical wall (25) and, on the other hand, by an outlet wall (27) which tapers from a beginning transition point (30) at the cylindrical wall (25) to the overflow opening (14). <IMAGE>