Displacement filter apparatus
OwnerSean R. Dubyinventor
Life of this patent
Estimating the term…
Abstract
A method and apparatus for filtering a slurry utilizing a displacement filtering principle. The filter apparatus desirably includes an inner filter and an outer filter. Both the inner and outer filters are preferably substantially annular in shape and positioned concentrically with respect to each other. A particulate collection volume is at least partially defined between the inner and outer filter. The method includes directing a flow of slurry into the particulate collection volume under sufficient pressure to force fluid within the particulate collection volume through one of the inner and outer filters and any particulate matter blocking a filtering surface of the inner and outer filters.
Claims9
A filter apparatus, comprising:
- an annular inner filter defining an internal cavity;
- an outer filter surrounding said inner filter, said inner filter and said outer filter defining an annular particulate collection volume when said filter apparatus is in a closed position, said inner filter and said outer filter being movable axially with respect to one another to define an open position wherein particulate may be emptied from said filter apparatus;
- an outlet located downstream from said particulate collection volume;
- an inlet directing fluid into said particulate collection volume before said fluid passes through either of said inner filter and said outer filter;
- and
- a drive having a portion which exerts force on at least one of said inner filter and said outer filter to move said filter apparatus between said open position and said closed position.
A filter apparatus, comprising:
- an annular inner filter defining an internal cavity;
- an outer filter surrounding said inner filter, said inner filter and said outer filter defining an annular particulate collection volume when said filter apparatus is in a closed position, said inner filter and said outer filter being movable axially with respect to one another to define an open position wherein particulate may be emptied from said filter apparatus;
- an outlet located downstream from said particulate collection volume;
- an inlet directing fluid into said particulate collection volume before said fluid passes through either of said inner filter and said outer filter;
- and
- means for moving said filter apparatus between said open position and said closed position.
Dependencies are inferred from the claim text.