Patent ID: 7909173

Claim:
An autonomous and mobile centrifugal apparatus for fractionating hydraulic suspensions with non-uniform granular or fibrous structure of solid particles, into liquid and solid parts, said apparatus comprising: a main housing having a lid for easy access inside said centrifugal apparatus; a screen located inside said main housing, said screen having a shape of an upside down hollow truncated cone, said screen having a round top and a round bottom parallel to each other, said screen having an axis of rotation that passes through the centers of said top and bottom, said screen having a perforated surface with a multitude of holes, said screen being rotated around said axis of rotation; a screen scraper having a hollow shaft having a spiral of flights connected to said hollow shaft, said screen scraper being rotated inside said screen, around said axis of rotation, having greater speed of rotation than said screen; a drive shaft located inside said hollow shaft of said screen scraper, said drive shaft being rotated around said axis of rotation, but with a lower speed of rotation than that of said screen; a loading screw located under said screen, said loading screw having a spiral of flights connected to said drive shaft, said loading screw having a loading screw connection which allows said loading screw to be connected and disconnected from the rest of said drive shaft; a loading screw incasing having a hollow tube enveloping said loading screw, said loading screw incasing being located under said main housing, said loading screw incasing being removable from said screen housing; a crusher located under said loading screw, said crusher having a number of dowels attached perpendicularly to the inside of said loading screw incasing and a number of dowels attached perpendicularly to said drive shaft, for reducing lumps in the influent to be processed by said centrifugal separator; a mixer located below said crusher, said mixer having series of blades attached to said drive shaft in a spiral pattern, for continuous loading of said influent into said loading screw incasing, mixing said influent to the needed consistency and transporting it to said loading screw; drive means located on the upper part of said drive shaft, for rotating said drive shaft and said screen and said screen scraper at different speeds via pulleys and belt gears; a loading zone, having an opening located at the bottom of said incasing of the loader for receiving of said influent; a sediment outlet located on top of said screen, said sediment outlet having vertical bars attaching said screen to a screen drive, said screen drive having a shape of a circular disc with a round hole in the center of said disc, said sediment outlet having spaces between said vertical bars for receiving the sediment removed by said screen scraper; and, a liquid outlet located at the bottom of said main housing, for receiving the liquid extracted out of said influent through said screen.