Support and drive members suitable, for example, for use in shower units of papermaking machines

摘要

A support and driving member comprises an open framework comprising a helical strip (38) supported by a series of support members (39) extending longitudinally of the helical strip and internally thereof. The member may be incorporated in a shower unit that comprises a tubular housing (1) with a longitudinal slot (6), the driving member (16) being located coaxially within the housing and mounted for rotation about its longitudinal axis. A driving motor (15) housed in an end cap (8) has an output shaft (24) that rotates the member (16). Mounted on the member (16) for movement along the latter is a nozzle carrier (5) carrying an air nozzle (41) and a water nozzle that discharge through the slot (6). The nozzles are connected via flexible supply lines (SL) within the housing (1) to inlets (34) for treatment fluids.