Filter device

Details Filter device Filter device

B - Operations, Transporting

01

D

B01D 46/26 (2006.01) B01D 29/41 (2006.01) B01D 46/12 (2006.01) B01D 46/42 (2006.01) B01D 33/27 (2006.01)

Patent

CA 2124226

- 8 - A B S T R A C T The filter disks (12, 13) of the filter device are provided on both sides on a filter chamber (34), which surrounds an inflow-side, closed outflow chamber (5) in circular or helical manner. For periodic cleaning purposes on each filter disk (12, 13) is provided a suction nozzle (14, 15) for filtered off solid particles, which extends over the radial width of the filter disk (12, 13). During cleaning, a drive (20, 21) rotates the outflow chamber (5) with the filter chamber (34) fixed thereto, so that the filter disks move along the suction nozzles (14, 15). In the case of a helical filter chamber (34) only one pair of suction nozzles (14, 15) is required, in that they are moved on a rod guide as a result of the rotary movement of the filter chamber (34). The rotary movement of the filter chamber (34) in one direction makes one of the filter disks (12, 13) engage with one of the suction nozzles (14, 15). In the meantime the other is closed by a check valve (45). An outwardly tapering cross-sectional shape of thefilter chamber (34) permits the engagement of the suction nozzles (14, 15) with a slight pitch of the thread shape of the filter chamber (34) or in the case of a confined arrangement of several axially juxtaposed filter chambers. Thus, no separate drive is required for moving a suction nozzle over the filter surface and, compared with its size, the filter device has a large filter surface. (Fig. 5)

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