Disc filter having filtrate directing means

Claim 2

A disc filter comprising a rotatable core provided with longitudinally extending core passage means and core outlet means for discharging filtrate from said core passage means, filter disc means having a plurality of disc passages connected to said core passage means and arranged to communicate through said core passage means with said core outlet means, and means adjacent the connections of said disc passages to said core passage means for controlling the communication of said disc passages with said core outlet means and directing filtrate discharged to said core passage means from said disc passages in a direction towards said core outlet means, said controlling and directing means comprising baffle means in said core passage means extending generally transversely to said disc passages, said baffle means defining flow openings through which said disc passages communicate with said core outlet means, and said flow openings being located to cause filtrate discharged by said disc passages to flow in said direction towards said core outlet means.

Claim 3

A disc filter according to claim 1, wherein said filter disc means includes a plurality of filter discs spaced longitudinally of said core, said filter discs each comprising a plurality of filter sections generally side-by-side and including said disc passages, said baffle means comprises separate baffles for each of said filter sections, and said flow openings are adjacent the side of their respective filter section most adjacent to said core outlet means.

Claim 4

A disc filter comprising a rotatable core provided with longitudinally extending core drainage passage means and core outlet means at one end of said core through which filtrate is discharged from said core passage means, a plurality of filter discs each adapted to encircle said core and including generalLy side-by-side filter sections having open-ended drainage passages for discharging filtrate from the filter discs, means mounting said filter discs around said core at locations spaced along the length of said core with the open ends of said disc drainage passages connected to said core passage means and arranged to communicate through said core passage means with said outlet means, and baffle means adjacent the open ends of said disc drainage passages for controlling the communication of such open ends with said outlet means and directing filtrate discharged to said core passage means through such open ends in a direction towards said one end of said core, said baffle means extending generally transversely to their respective open ends and defining flow openings through which such open ends communicate with said core outlet means, said flow openings being located to cause the filtrate discharged through the open ends to flow in said direction towards said one end of said core.

Claim 5

A disc filter comprising a rotatable core provided with longitudinally extending core drainage passage means and core outlet means at one end of said core through which filtrate is discharged from said core passage means, a plurality of filter discs each adapted to encircle said core and including generalLy side-by-side filter sections having open-ended drainage passages for discharging filtrate from the filter discs, means mounting said filter discs around said core at locations spaced along the length of said core with the open ends of said disc drainage passages connected to said core passage means and arranged to communicate through said core passage means with said outlet means, and baffle means adjacent the open ends of said disc drainage passages for controlling the communication of such open ends with said outlet means and directing filtrate discharged to said core passage means through such open ends in a direction towards said one end of said core, said baffle means extending generally transversely to their respective open ends and defining flow openings through which such open ends communicate with said core outlet means, said flow openings being located to cause the filtrate discharged through the open ends to flow in said direction towards said one end of said core.

Claim 6

A disc filter according to claim 3, wherein said mounting means also mount said baffle means to said core.

Claim 7

A disc filter according to claim 3, wherein said baffle means provide relatively shallow cavities at said open ends and said flow openings are each of substantially the same flow area and communicate with said open ends through said cavities.

Claim 8

A disc filter comprising a rotatable core provided with a plurality of longitudinally extending core drainage passages and core outlet means at one end of said core for discharging filtrate from said core passages, said core passages tapering in cross section from said one end of said core, a plurality of filter discs each adapted to encircle said core and including generally side-by-side filter sections, the filter sections of each of said filter discs being provided with open-ended drainage passages for draining filtrate from said filter discs, means mounting said filter discs around said core at locations spaced along the length of said core whereby the open ends of such disc drainage passages are connected to respective core passages and arranged to communicate through such core passages with said core outlet means, and a baffle in said core passages adjacent the open end of each of said disc drainage passages of said filter sections, said baffles being mounted to said core by said mounting means, said baffles extending generally transversely across their adjacent open ends to control the communication of such open ends with said core outlet means and defining flow openings located to cause filtrate discharged to said core passages through said open ends to flow in a direction towards said core outlet means.

Claim 9

A disc filter comprising a rotatable core provided with a plurality of longitudinally extending core drainage passages and core outlet means at one end of said core for discharging filtrate from said core passages, said core passages tapering in cross section from said one end of said core, a plurality of filter discs each adapted to encircle said core and including generally side-by-side filter sections, the filter sections of each of said filter discs being provided with open-ended drainage passages for draining filtrate from said filter discs, means mounting said filter discs around said core at locations spaced along the length of said core whereby the open ends of such disc drainage passages are connected to respective core passages and arranged to communicate through such core passages with said core outlet means, and a baffle in said core passages adjacent the open end of each of said disc drainage passages of said filter sections, said baffles being mounted to said core by said mounting means, said baffles extending generally transversely across their adjacent open ends to control the communication of such open ends with said core outlet means and defining flow openings located to cause filtrate discharged to said core passages through said open ends to flow in a direction towards said core outlet means.

Claim 10

A disc filter according to claim 6, wherein said baffles include recessed portions having their recesses facing said open ends to provide relatively shallow cavities at said open ends, and said flow openings are each of substantially the same flow area and communicate with said open ends through said recesses.

Claim 11

A disc filter according to claim 6, wherein said mounting means for each of said filter sections include a plurality of mounting bolts securing opposite sides of said filter sections to said core, said baffles each include a baffle plate mounted at opposite ends to said core by said mounting bolts, and said baffle plates have said flow openings therethrough.