| 摘要 |
A fluid spraying apparatus (10) comprising a generally cylindrical body defining a longitudinal axis, which body comprises: a first fixed part (12) comprising inlet means (16) adapted for connection to a pumped supply of fluid, and turbine means (40, 42, 44) arranged to be driven by said fluid; a nd a second rotatable part (14) comprising gear means (46-60), and one or more nozzles (82) in fluid communication with the turbine means for outletting th e fluid as one or more jets, which nozzles extend radially of the longitudinal axis, which rotatable part is drivable by the turbine means through said gea r means such that said nozzles are caused to rotate about said longitudinal axis; characterised in that none of the nozzles extends radially of the longitudinal axis further than the body. The apparatus is adapted to operate at a working pressure of 4-8 bar to provide a flow-rate of 400-700 m3/hr, an d is thus suitable for use with low pressure pumps of the kind often found at oil refineries.
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