Cutting tool pertaining to a centrifugal pump
AssigneeWilo SE
InventorsManfred Zelder, Michael Muller
Life of this patent
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Abstract
The invention relates to a cutting tool pertaining to a centrifugal pump for liquids loaded with solids. Said cutting tool comprises a rotating cutting body comprising at least one opening forming a cutting edge and through which the liquid flows, the lateral surface of the cutting body facing the rotationally fixed opposite surface that also comprises at least one opening through which the liquid flows. The lateral surface of the cutting body, facing the opposite surface, is curved in a convex manner, and the opposite surface is curved in a correspondingly concave manner.
Claims12
A cutter (1) of a rotary pump for liquids containing solid materials, the cutter having a rotating blade (2) having at least one opening (5) through which the liquid flows that forms a cutting edge and the blade is directed with one end face (8) toward a nonrotating counter surface (9) that also has at least one opening (12) through which the liquid flows, characterized in that the end face (8) of the blade (2) that directed toward the counter surface (9) is convex, whereas the counter surface (9) is complementarily concave.
Dependencies are inferred from the claim text.