Digging wheel for a suction dredger vessel
AssigneeIHC Holland N.V.
InventorsJohannes van den Elshout, Jan Asselbergs
Life of this patent
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Abstract
A digging wheel for a suction dredger vessel which digging wheel rotates about a horizontal axis and has at its circumference a plurality of closely spaced partly overlapping scoops while the suction mouth in the interior of the wheel has an extension which extends into the scoops and fits through the outlet of the scoops. The effective passage between the leading edge of a scoop and the outlet edge of a preceding scoop is smaller than the outlet and any further passage towards the pump is of the same or larger magnitude than the outlet of a scoop.
Claims8
In a digging wheel for a suction dredger vessel, said wheel being rotatable about a horizontal axis and having at its outer circumference a series of digging scoops regularly distributed about its circumference each one being U-shaped in a radial cross section of the wheel with the legs of the U secured to the said circumference and with an inlet opening facing forwardly in the direction of rotation, said inlet opening being larger than the outlet opening of each scoop, the said outer circumference over its entire length having a passage between the legs of the scoops which communicates with the suction mouth of a suction conduit extending into the wheel through a stationary side wall of the wheel, which suction mouth covers part of the circle of the wheel along said passage;
- the improvement in which the suction mouth has an extension extending through the passage into the scoops and fitting into the outlet openings of said scoops and opening in a direction opposite the direction of rotation of the wheel.
Dependencies are inferred from the claim text.