Centrifuge screen
AssigneeWeatherford/Lamb, Inc.
InventorsChuck Flansburg, Pierre Ducloux, Michael D. Appel
Life of this patent
Estimating the term…
Abstract
A centrifuge screen includes a series of support rods supporting and underlying a series of filter wires. The filter wires have a triangular cross-section and are less than 0.030 inches in cross-sectional width. The filter wires are spaced less than 0.010 inches apart. The screen is a fine opening, high open area screen for use in a centrifuge to separate particulate matter from a liquid.
Claims18
A centrifuge screen for insertion within a rotating centrifuge drum, the screen comprising:
- a conical sidewall extending from a lower rim to an upper rim of the screen, the lower rim having a diameter that is less than a diameter of the upper rim, the sidewall comprising three arcuate-shaped screen segments,
- wherein each of the screen segments includes a plurality of filter wires, at least two of which are spaced apart and substantially parallel toward the upper rim, the filter wires having a cross-sectional width of less than 0.030 inches and being spaced apart by a dimension which is less than the cross-sectional width of the wires, and a plurality of transversely extending support rods intersecting the plurality of wires, at least two of the support rods being substantially parallel.
A centrifuge for separating particulate matter from a liquid, the centrifuge comprising:
- a rotating drum;
- a conical support basket positioned within the drum and rotatable with the drum;
- and
- a conical screen lining the support basket, the conical screen having an upper and a lower rim, the upper rim having a diameter greater than a diameter of the lower rim, the conical screen comprising at least two screen segments coupled together to form a sidewall of the screen extending from the lower rim to the upper rim, each screen segment including:
- a plurality of substantially parallel filter wires;
- a plurality of substantially parallel support rods supporting the plurality of substantially parallel filter wires;
- and
- a resilient member positioned between at least two of the support rods.
A sugar processing device comprising:
- a drum for receiving a liquid containing sugar crystals;
- a driving assembly for causing rotation of the drum;
- a screen housed in the drum for filtering sugar crystals from the liquid during rotation of the drum, the screen including,
- a conical sidewall extending from a lower rim to an upper rim of the screen, the lower rim having a diameter that is less than a diameter of the upper trim, the sidewall comprising a plurality of wires arranged in mutually parallel relation, the wires having a cross-sectional width of less than 0.030 inches and spaced apart by a dimension which is less than the cross-sectional width of the wires, the sidewall further comprising a plurality of transversely extending support rods, at least two of the support rods being substantially parallel.
A processing device for processing a liquid containing sugar crystal, comprising:
- a drum for receiving the liquid;
- a driving assembly for causing rotation of the drum;
- a screen housed in the drum for filtering sugar crystals from the liquid during rotation of the drum, the screen including,
- a conical sidewall extending from a lower rim to an upper rim of the screen, the lower rim having a diameter that is less than a diameter of the upper trim, the sidewall having a plurality of wires arranged in mutually parallel relation, wherein the wires are spaced apart by a dimension which is less than a cross-sectional width of the wires, and a plurality of transversely extending support rods, wherein at least two of the support rods being substantially parallel.
Dependencies are inferred from the claim text.