Spinning unit of a rotor spinning machine and a part of a spinning unit

The invention relates to a spinning unit of a rotor spinning machine comprising an opening roller (20) arranged in a cavity (21) of an opening device (2), whereby between the surface of the circumference of the opening roller (20) and the circumferential wall (23) of the cavity (21) of the opening device (2), a transport channel (22) of opened fibers is formed, into which in the direction (X) of the rotation of the opening roller (20) opens a fiber sliver inlet opening (230), a cleaning opening (231), which is followed by a channel (24) for removing trash from the transport channel (22), and afiber outlet opening (232) which is followed by a fiber outlet channel (25) to a chamber (3) of a spinning rotor. 本发明涉及一种转杯纺纱机的纺纱单元，包括布置在开松设备（2）的空腔（21）中的开松辊（20），借此开松的纤维的输送通道（22）形成在开松辊（20）的圆周的表面和开松设备（2）的空腔（21）的圆周壁（23）之间，在开松辊（20）的旋转的方向（X）上，纤维纱条入口开口（230）、清洁开口（231）和纤维出口开口（232）通向输送通道（22），清洁开口（231）由通道（24）紧随，用于从输送通道（22）移除杂质，纤维出口开口（232）由纤维出口通道（25）紧随到纺纱转杯的腔室（3）。