|
PatentVote.com: Vote on your favourite invention!
|
|
 |
Title: Apparatus and system for generating a protective coating in a rotary concentrator for abrasive solids-containing fluids
Claims: I claim as my invention: 1. In an apparatus for continuous separation of an abrasive solids-containing fluid into a vehicle fluid and a concentrated slurry of solids which includes (1) a housing characterized by an interior surface and a longitudinal axis and having an inlet for introducing a solids-containing fluid into said housing and and outlet for removing a concentrated slurry of solids therefrom; (2) at least two substantially parallel, coaxially disposed, spaced-apart annular elements mounted within said housing on the longitudinal axis thereof and established stationarily with respect thereto between said inlet and said outlet; (3) a rotor shaft extending within said housing along the longitudinal axis thereof and passing coaxially through said annular elements in spaced diametral relation thereto leaving openings for fluid flow between the outer surface of said shaft and the inner circumferential surfaces of said annular elements, said shaft being rotatable with respect to said housing and said annular elements, and (4) a radially extensive rotor element having one side and another, opposite side and an outside edge mounted to said rotor shaft to turn therewith with its outside edge terminating in spaced relation to the interior surface of said housing and positioned between said spaced-apart annular elements to define a flow path for solids-containing fluid from said inlet to said outlet extending across at least one side of one of said spaced-apart annular elements between it and one side of said rotor element, then between the outside edge of said rotor element and the interior surface of said housing and then between the other, opposite side of said rotor element and the other of said annular elements with at least one of those elements being a filter means comprising a filter chamber having at least one filtering surface serving as a boundary of said flow path with the interior of that chamber being in fluid flow commmunication with the exterior of said housing for the removal of filtrate vehicle fluid from that chamber, the improvement comprising means within said housing for detaining abrasive solids from the abrasive solids-containing fluid and thereby autogenously providing an essentially static deposit of abrasive solids between said housing and said flow path for protecting the interior surface of said housing from abrasion by further solids moving in said flow path. 2. The improvement of claim 1 wherein said detaining means comprises at least one baffle mounted to the interior surface of said housing. 3. The improvement of claim 2 wherein said baffle extends inwardly from the interior surface of said housing in the region between said spaced-apart annular elements and the outside edge of said rotor element. 4. The improvement of claim 2 wherein said baffle is in the form of a plate-like member extending inwardly from and nonradially with respect to the interior surface of said housing. 5. The improvement of claim 1 wherein said detaining means comprises a plurality of pockets in he interior surface of said housing in the region between said spaced-apart annular elements and the outside edge of said rotor element. 6. The improvement of claim 5 wherein said pockets are grooves disposed substantially parallel to said rotor shaft. 7. The improvement of claim 1 wherein said detaining means comprises at least one baffle mounted to the interior surface of said housing and a plurality of pockets in that surface, both said baffle and said pockets being in the region between said spaced-apart annular elements and the outside edge of said rotor element. 8. In an apparatus for continuous separation of an abrasive solids-containing fluid into a vehicle fluid and a concentrated slurry of solids which includes (1) a housing characterized by an interior surface and a longitudinal axis and having an inlet for introducing a solids-containing fluid into said housing and an outlet for removing a concentrated slurry of solids therefrom; (2) at least two substantially parallel, coaxially disposed, spaced-apart annular filter elements mounted within said housing on the longitudinal axis thereof and established stationarily with respect thereto between said inlet and said outlet, said filter elements each comprising a filter chamber having at least one filtering surface with the interior of each filter chamber being in fluid flow communication with the exterior of said housing for the removal of filtrate vehicle fluid from those chambers and filtering surfaces on said two filter elements being in facing relation one to the other from filter element to filter element; (3) a rotor shaft extending within said housing along the longitudinal axis thereof and passing coaxially through said annular filter elements in spaced diametral relation thereto leaving openings for fluid flow between the outer surface of said shaft and the inner circumferential surface of said annular filter elements, said shaft being rotatable with respect to said housing and said filter elements, and (4) a radially extensive rotor element having one side and another, opposite side and an outside edge mounted to said rotor shaft to turn therewith with its outside edge terminating in spaced relation to the interior surface of said housing and positioned between said spaced-apart annular filter elements to define a flow path for solids-containing fluid from said inlet to said outlet extending between a filtering surface of one of said filter elements and one side of said rotor element, then between the outside edge of said rotor element and the interior surface of said housing and then between the other, opposite side of said rotor element and a filtering surface of the other of said filter elements, the improvements comprising a plurality of spaced-apart, plate-disc baffles mounted to the interior surface of said housing and extending inwardly toward said rotor element in the region between said annular filter elements and the outside edge of said rotor element. 9. The improvement of claim 8 further comprising at least one pocket in the interior surface of said housing at least between two of said plate-like baffles. 10. The improvement of claim 9 wherein said pocket is a groove disposed substantially parallel to said rotor shaft. 11. The improvement of claim 8 further comprising a plurality of pockets in the interior surface of said housing between successive baffles with said baffles said spaced substantially uniformly around the full interior surface of said housing. Other info: Inventors: Donovan, James (Cambridge, MA, US) Application Number: 524820 Filing Date: 1974-11-18 Publication_date: 1976-04-06 Assignee: Artisan Industries Inc. (Waltham, MA) Primary Class(es): 210/320 210/332, 210/336 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Hart, Charles N. Assistant Examiner: Burks, Richard W. Attorney: Cannaday; Richard L., Ungvarsky; William J., Tobin; Robert T. |
|