| 摘要 |
<p>A filter arrangement which consists of a belt filter for the separation of particles from a liquid, for which purpose the liquid is caused to flow in towards the filter through an inlet (13) at one end of the filter, and the separated particles are collected at the opposite end of the filter. The belt filter consists of an endless filter belt (10) which is caused to run over a front and a rear guide roller (2, 3) in the direction of the water as it flows in, and to support and drain the particles as they are conveyed in a desired direction of transport on an upper, forward-moving part of the filter belt from one end to the opposite end over a first drainage zone. Cleaned liquid is in this way caused to pass through the aforementioned upper part (11) of the belt. A second drainage zone is arranged on the upper part (11) of the belt after the first drainage zone by the arrangement on the latter drainage zone of a drainage arrangement (17) which comprises a blower unit (18) extending across the entire width of the filter belt (10) and so arranged as to direct currents of air against the under side of the upper part (11) of the belt of the filter belt (10), and in so doing as to blow water from the belt and the particles over the second drainage zone of the belt. A deflector device (19) situated on the upper side of the upper part of the filter belt above the blower device is so arranged as to guide the water blown by the current of air in the direction of the deflector device back onto the upper side of the filter belt in front of the second drainage zone, that is to say against the direction of transport of the upper part of the belt.</p> |
