| 摘要 |
<p>The filter unit is of the type comprising a casing (2), filter tubes (5) associated with a filtering surface (6), shaker means (7) for said filtering surface (6), a suction pipe (10) associated with said casing and a suction pipe (11) associated with one or more turbines and characterised in that said casing (2) comprises above said filtering surface (6) at least two separate chambers (13,13') each independently connected to said suction pipe (11) associated with one or more turbines. <IMAGE></p> |
