一种压缩装置（2）一个纺纱机上，用于压缩纤维束在一对牵伸冷凝区的输出辊子下面的包括纤维复合材料通过压缩区循环透气输送带输送（5）。 压缩区是一个，传送带（5）沿其循环路径以一定距离从吸入管领先于吸入管（3）吸槽和与传输带（5）设置有吸入管（3）（3），从而导致偏转导管的局部拉伸（4） 分配。 吸入管（3）和所述偏转引导件（4）被布置成具有第一间隙表面（12）的间隔件（10），利用该偏转引导件（4）以一定距离保持从吸入管（3），其中间 传送带（5）被拉紧。 间隔件（10）被保持在所述进气歧管（3）和偏转引导件（4）可动之间，以使第一间隙表面（12）脱离接合，并且以能够改变所述进气歧管（3）和偏转导向件之间的距离（4）。 压实装置（2）的间隔件包括至少一个第一，优选还具有第二间隙表面（12,13）和上的移动装置（11,21）。

A compression device (2) on a spinning machine for compressing a fiber bundle in a one roller pair of a drafting following compression zone has a the fiber composite transporting through the compression zone circulating air-permeable conveyor belt (5). The compression zone is a, the conveyor belt (5) along a partial stretch of its circulation path leading the suction pipe (3) disposed with a in the suction pipe (3) vacuum slot and with a transport band (5) at a distance from the suction pipe (3) leading deflecting guide (4) assigned. Between the suction pipe (3) and the deflection guide (4) is a spacer (10) is arranged which has a first clearance surface (12), with which the deflection guide (4) held at a distance from the suction pipe (3), wherein the conveyor belt (5) is stretched. The spacer (10) between the intake manifold (3) and deflecting guide (4) held displaceable to bring the first clearance surface (12) is disengaged and to be able to change the distance between the intake manifold (3) and deflecting guide (4). A spacer of a compression device (2) has at least a first, preferably also a second clearance surface (12,13) ​​and a slide means (11,21) on.