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    • 18. 发明公开
    • ARRANGEMENT AT ROTATING FILTERS FOR IMPROVED FILTRATE DISCHARGE
    • 建立旋转过滤FOR滤液的改进去除。
    • EP0322439A1
    • 1989-07-05
    • EP88906191.0
    • 1988-06-22
    • Nilsson, Bjarne
    • Nilsson, Bjarne
    • B01D33
    • B01D33/215B01D33/74B01D33/82B01D2201/282
    • PCT No. PCT/SE88/00350 Sec. 371 Date Feb. 24, 1989 Sec. 102(e) Date Feb. 24, 1989 PCT Filed Jun. 22, 1988 PCT Pub. No. WO88/10145 PCT Pub. Date Dec. 29, 1988.A disk filter, including a plurality of rotatable, axially spaced annular filter disks (6:1-6:11) adapted to be partially immersed in a liquid or a suspension which is to be filtered. Each filter disk comprises a plurality of filter elements 6:1a-f . . . 6:11a-f) which are in communication with axial filtrate conduits (2a-2l) arranged at the outer peripheries of the annular disks for discharge of filtrate. For increasing the flow speed of the filtrate in the axial filtrate conduits these slope downwards in the flow direction. This has been achieved in that a filter element (6:1a) of a filter disk (6:1b) is displaced relative to the filter element (6:2a) of the filter disk (6:2) connected to the same filtrate conduit (2a) and being the following filter disk, counted in the flow direction in the axial filtrate conduit, so that the first mentioned filter element is in advance of the later mentioned filter element, as counted in the direction of rotation.
    • 19. 发明公开
    • ROTATING FILTER WITH OUTER FILTRATE CONDUITS
    • 旋转滤光片制外滤液。
    • EP0319564A1
    • 1989-06-14
    • EP88906190.0
    • 1988-06-22
    • Nilsson, Bjarne
    • Nilsson, Bjarne
    • B01D33
    • B01D33/215B01D33/74B01D33/82B01D2201/282
    • PCT No. PCT/SE88/00349 Sec. 371 Date Feb. 24, 1989 Sec. 102(e) Date Feb. 24, 1989 PCT Filed Jun. 22, 1988 PCT Pub. No. WO88/10144 PCT Pub. Date Dec. 29, 1988.A disk filter including a plurality of rotatable, annular filter disks (3) arranged mutually spaced in an axial direction, and disposed for being partially immersed in a liquid or a suspension to be filtered. Each filter disk comprises a plurality of filter sections (4) which are in communication with axially directed filtrate conduits (2) arranged in the peripheries of the disks (3) for discharge of filtrate. The filtrate conduits (2) are provided with backwash barriers which are adapted to prevent liquid flow from the filtrate conduits radially inwards when the filter sections (4) rise above the liquid surface. The backwash barriers have been achieved by each filter section (4) being connected to an axial filtrate conduit in the form of a pipe (2), the main portion of the cross-section of the pipe at the place of attachment being located after each part of the filter section (4) as seen in the direction of rotation (A).