and 11 the sieve drums 12 and 13 at the sides of their closable openings 20 and 23 are guided outwardly from the respective housings 15 and 25 and supported in these regions of the housings 15 and 25 by schematically illustrated play free ball bearings 29 and 30 the structure of the bearings and their sealing arrangement are shown in detail in fig2 fig2 depicts the bearing region of one sieve drum only it is of course understood that both sieve drums have in the regions of their support identical sealing arrangements such sealing arrangement is sufficient not only for the drying device 11 but also for the device for chemical cleaning of the goods being processed operated with chemical liquids as noted above reference numeral 25 designates the housing of the drying device 11 and reference numeral 22 denotes the door of the sieve drum 13 the latter is provided at the side of the bearing with an end wall ring 31 which terminates with a ring shaped clement 32 at the opening 23 of the sieve drum 13 a drive ring 34 is rigidly connected to a ring shaped element 32 39 by bolts 33 the ring shaped elements 32 and 32 39 are connected with one another by not shown.