| 摘要 |
Apparatus for cleaning the interior surfaces of tanks and the like, of the type comprising an outer section with a flange member for attachment to the wall of a tank to be cleaned, and with device means for connection to a fluid supply and to a driving means, and an inner section with a supply tube for introduction into the tank, whereby the tube is fixed to the flange member at one end and at its other end is provided with a flushing head which is rotatable about the tube axis and has a tube section on which there is pivotally mounted a nozzle unit with two oppositely directed nozzles. The nozzle unit is rotatable about an axis at right angles to the tube axis, and the flushing head is provided with a mechanism for rotating the nozzle unit a small angle for each revolution of the flushing head. The flushing head is mounted in a holder fixed to the adjacent end of the tube, and is rotated by a driving shaft disposed concentrically in the supply tube, which shaft is attached to the flushing head at one end and is connectable to the external driving device at its other end, and further the tube section of the flushing head is provided with a slot-like aperture in the area facing the nozzles, which aperture extends essentially over one half of the circumference of the tube section, for supplying cleaning fluid to only one nozzle at a time. |
