Abstract: A multi-plate coupling includes two connecting flanges and an intermediate member arranged between the connecting flanges. A plate pack crown is arranged between each of the connecting flanges and the intermediate member. The plate pack crown is alternately connected to the associated connecting flange and the intermediate member by screw fasteners which are guided through continuous fastening bores arranged in the plate pack crown. At least one of the fastening bores of the plate pack crown has a contour diverging from the circular shape. A positive-locking element having a corresponding outer contour is inserted into the fastening bore. A component bears on the outer contour of the positive-locking element in a positive-locking manner and provides a bending edge for the plate pack crown.

Abstract: A multi-plate coupling includes two connecting flanges and an intermediate member arranged between the connecting flanges. A plate pack crown is arranged between each of the connecting flanges and the intermediate member. The plate pack crown is alternately connected to the associated connecting flange and the intermediate member by screw fasteners which are guided through continuous fastening bores arranged in the plate pack crown. At least one of the fastening bores of the plate pack crown has a contour diverging from the circular shape. A positive-locking element having a corresponding outer contour is inserted into the fastening bore. A component bears on the outer contour of the positive-locking element in a positive-locking manner and provides a bending edge for the plate pack crown.

Abstract: A screening machine is provided with a screening device and a screening device with multiple adjacent screen shafts disposed rotatable each of which being provided with a plurality of screen disks. The screen disks are made of rigid materials and are separated from one another in the axial direction by a clearance each. The screen disks of a screen shaft engage in clearances of the screen disks of adjacent screen shafts. Half of the screen disks are provided with a cleaning device for cleaning the clearances between the screen disks.

Abstract: A screening machine is provided with a screening device and a screening device with multiple adjacent screen shafts disposed rotatable each of which being provided with a plurality of screen disks. The screen disks are made of rigid materials and are separated from one another in the axial direction by a clearance each. The screen disks of a screen shaft engage in clearances of the screen disks of adjacent screen shafts. Half of the screen disks are provided with a cleaning device for cleaning the clearances between the screen disks.