FILTRATION

摘要

A filtration unit having an inlet to (3), and outlet from (4), a filtration zone (1) in which one or more filter elements (5) are located, the filtration zone (1) being located above a collection zone (2), the collection zone (2) comprising powered movement means (7, Figure 4) operable to cause particulate matter contacting such movement means to be urged towards storage means (11).