Device for removing cake or residual layer in a centrifuge
AssigneeRobatel
InventorMichel Martin
Life of this patent
Estimating the term…
Abstract
The device comprises a first wide-mesh cloth or screen which bears against the calender of a basket, at least one tight supple tube connected to a source of gas under pressure which is against the first cloth or screen, a second cloth or screen identical to the first covering the tube such that the tube is sandwiched between the cloths or screens, and a fine-mesh filtering cloth covering the second cloth or screen.
Claims19
A device for use in a centrifuge comprised of a rotatable basket including a sidewall defining a plurality of fluid passages, comprising:
- a first screen including an outer face and an inner face, said first screen being attachable to the basket such that said outer face contacts the sidewall;
- a second screen covering said inner face of said first screen;
- a third screen covering said second screen, said third screen being of a smaller mesh size than said first and second screens, said second and third screens being attachable to the basket;
- and
- a fluid impermeable inflatable element disposed between said first and second screens, said inflatable element being connected to a source of pressurized gas for inflating the element so as to elastically deform said third screen and remove solid material retained thereagainst, said inflatable element being configured to enable fluid flow around said inflatable element and through the fluid passages in the sidewall in a non-inflated condition.
A device for use in a centrifuge comprising a rotatable basket including a sidewall defining a plurality of fluid passages, comprising:
- a first screen adapted to contact the sidewall of the basket;
- a second screen covering said first screen;
- a third screen covering an inner face of said second screen, said third screen being of a smaller mesh size than said first and second screens, said first, second and third screens being attachable to the basket of the centrifuge;
- and
- a fluid impermeable inflatable element disposed between said first and second screens, said inflatable element comprising rotatable means for connecting to a source of pressurized gas to enable inflation of said inflatable element during rotation of the basket so as to elastically deform said third screen and remove solid material retained thereagainst.
A centrifuge comprising:
- a basket including a sidewall defining a plurality of fluid passages;
- means for rotating said basket;
- a first screen attached to said basket and including an outer face in contact with said sidewall and an inner face;
- a second screen covering said inner face of said first screen;
- a third screen covering said second screen, said third screen being of a smaller mesh size than said first and second screens;
- and
- a fluid impermeable inflatable element disposed between said first and second screens, said inflatable element being connected to a source of pressurized gas for inflating said inflatable element so as to elastically deform said third screen and remove solid material retained thereagainst, said inflatable element being of a size such that in a non-inflated condition thereof a portion of said sidewall is uncovered by said inflatable element to enable fluid flow around said inflatable element and through said fluid passages.
Dependencies are inferred from the claim text.