MISCHVORRICHTUNG MIT ROTIERENDER DUESE

The device comprises a tube (1) with a housing (2) arranged thereon and consisting of housing parts (8a, 8b), a bore (3) for the feeding of the liquid, a bore (4) for monitoring leak-tightness, an interior wall section (5) with recesses (6) for packing rings (28, 29), and a shoulder (7). A shaft (9) consists of lower and upper shaft sections (10, 12), the lower shaft section (10) possessing a longitudinal bore (11) with a first transverse bore (13) provided in a recess (13a) and a second transverse bore (14) in a nozzle head (15), in which nozzle head a nozzle device (16) is provided with a perforated nozzle (17). The upper shaft section (12) is mounted in ball bearings (19, 20) which are held at a distance by a sleeve (21). The ball bearing (19) is held in position by the shoulder (7) and a shaft extension (18), and the ball bearing (20) is held in position by a first retaining ring (23), which can be inserted into a first annular groove (22), and by a second retaining ring (25) which can be fitted into a second annular groove (24). An elongate groove (27) is provided at the shaft end (26).