| 摘要 |
<p>A tank washing machine, suitable for cleaning the tanks of marine oil tankers, in which washing liquid is discharged from a nozzle mounted on a housing which is rotatable about a first axis (e.g., vertical) in relation to other normally fixed parts of the machine. The nozzle is pivotable or rotatable about a second axis (e.g., horizontal) which is at an angle to the first axis. A single driving means (preferably a single turbine powered by wash liquid) is connected, via gears and a clutch mechanism, to rotate the housing about the first axis and via other gears to pivot or rotate the nozzle about the second axis, the ratio of the angular speeds of the nozzle and housing about their respective axes being constant, but the absolute angular speeds being varied in accordance with a selected program (e.g., as determined by the profile of a cam) so that distant tank walls are sprayed as effectively as proximate walls, during use.</p> |
