Drum cylinders with individually selectively exchangeable portions of their lateral surfaces and end walls

摘要

Rotatable immersed drum for chemical or electrolytic surface treatment of pourable bulk articles, between the two parallel end walls of which there is arranged a supporting framework consisting of longitudinal struts running parallel to the axis of rotation of the drum and intended for fastening the mostly prismatic drum casing, a perforated so-called lateral surface of the drum casing being situated between in each case two neighbouring longitudinal struts, and the individual lateral surfaces of the drum being composed of rectangular uniform casing elements (M1 or M2) of the same length and width which are arranged in a row one behind the other, are clamped between the pairs of neighbouring longitudinal struts (3) in modular fashion, can be selectively exchanged individually and independently of one another and have essentially the spatial shape of a plane rectangular frame (7 or 8) which contains either a perforated solid plate (10) or in which a sieve netting (11) is clamped in a way so that it cannot be exchanged without destruction, i.e. is clamped inseparably therein. In analogy according to the invention, in the regions of the end walls (4) which are assigned to the empty inner space of the drum, individual, equal-sized uniform end-wall caps (S1 or S2) of circular spatial shape which can be exchanged independently of one another and selectively individually are inserted in modular fashion, said end-wall caps either containing a perforated solid plate (10), or in which a ... Original abstract incomplete. <IMAGE>