Suction filter
AssigneeSchenk-Filterbau Gesellschaft mit beschrankter Haftung
InventorsRainer Kuhnt, Wolfgang Diemer, Kurt Jakob, Josef Brokhage
Life of this patent
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Abstract
A suction filter for the filtration of particulate matter from fluids has a housing with an inlet opening, a bottom cover, a filter plate lying over the bottom cover, and with a wiper-cutter capable of rotation over the filter plate. The wiper-cutter comprises arms which carry the filter cake into the middle of the filter plate where a central outlet opening is connected to an outlet line in the bottom cover. A valve closes off the outlet line. In the housing or in the outlet line is a vertically adjustable drill, which cuts a hole through the filter cake to permit the cake cut and carried inward by the wiper-cutter arms to fall into the outlet line.
Claims11
A filter apparatus, suitable for the filtration of liquids containing suspended particulate matter, which comprises in combination:
- a. a container vessel having a vessel top, a vessel bottom, a cylindrical vessel sidewall and means defining a feed inlet opening for introducing a liquid to be filtered;
- b. filter means within said container vessel, positioned adjacent said vessel bottom and spaced therefrom;
- c. means defining a filtrate outlet opening in said vessel bottom for removing a filtrate liquid from said container vessel and retaining a filter cake on said filter means;
- d. means defining a solids outlet opening in the center of said vessel bottom and said filter means, for the removal of retained filter cake from said filter means through said vessel bottom;
- e. valve means for opening and closing said solids outlet opening, said valve means having means defining an inlet opening at said filter means, and having means defining an outlet opening below said filter means;
- f. a rotatable adjustable shaft centrally mounted in said vessel top, said shaft having a lower end within said vessel and an upper end exterior of said vessel, and said shaft being adjustable vertically to different elevational positions within said container vessel;
- g. rotational motive means coupled to said rotatable adjustable shaft for rotating said shaft in a first direction and in a reversed second direction;
- h. first vertical adjusting means coupled to said rotatable adjustable shaft for vertically moving said shaft to different elevational positions within said container vessel;
- i. adjustable drilling means mounted on said vessel for drilling a central aperture through retained filter cake in alignment with said solids outlet opening and means for adjusting, said drilling means vertically to different elevational positions within said container vessel;
- and,
- j. cutter means mounted on the lower end of said rotatable adjustable shaft and extending laterally therefrom to said vessel sidewall, said cutter means having a bottom edge in said first direction for cutting the surface of retained filter cake into particles and passing said particles into said filter cake central aperture when said shaft is rotated in said first direction.
Dependencies are inferred from the claim text.