Suction device for the compression air from two interchangeable suction units on a twin drafting of a spinning machine.

摘要

The invention relates to a suction device for the compression air from two interchangeable suction units (10, 10a) on a twin drafting of a spinning machine for aerodynamic compaction of fiber material, which is provided via a respective suction zone of, with perforations (OE), peripheral and opposite compression elements ( 6, 6a) with which the respective compression element associated with the suction unit is led to a suction port (11, 11a) is provided, 12, 12a) is connected to an integrated in the respective suction unit suction channel (and with a, the suction units (10, 10a) associated with, a suction tube (22) exhibiting suction element (15) through which the 10a) extracted compression air discharged from the suction device through the suction units (10,, wherein the output ports (O1, O2) of the respective suction duct (12, 12a) of a opening of the suction tube in a coupling point (KS) face and the suction member (15) guides and holding means (17) are held and fixed by means of which the suction units (10, 10a) with respect to the respective compression element (6, 6a). To simplify and improve the coupling point (KS) is proposed that the output ports (O1, O2) of the suction units (10, 10a) each having a rectangular circumferential flange having a flat abutment surface at a common coupling point (KS) side by side on a revolving planar stop face a common, rectangular-shaped opening of the suction tube (22) rest, said flanges to the output ports (O1, O2) of the suction units completely cover the opening of the suction tube (22) and the holding means (17) with a compressive force to the stop surface are maintained.