SUCTION DEVICE FOR A TEXTILE MACHINE, TEXTILE MACHINE WITH A SUCTION DEVICE, USE OF TWO CYCLONE ELEMENTS, AND METHOD FOR SUCTIONING YARNS

The invention relates to a suction device (100) for a textile machine, comprising an opening piece (2) for introducing at least one yarn, a suction tube (3) for guiding the yarn, and a suction element (5) for generating a suction pressure. The suction element (5) comprises at least two cyclone elements (1a, 1b) for generating an eddy current of compressed air. The cyclone elements (1a, 1b) are arranged one behind the other in the suction direction (A) such that a yarn can first be guided by a first cyclone element (1a) and then by a second cyclone element (1b). Each cyclone element (1a, 1b) comprises a cyclone axis, wherein the cyclone axes are aligned in a coaxial manner in particular. Each cyclone element (1a, 1b) comprises at least one opening (31a, 31b) on the circumference, said opening being connected to a preferably shared air supply line (12), in particular such that eddies in both cyclone elements (1a, 1b) have the same rotational direction. The suction device (100) comprises a de Laval nozzle (13) i