Centrifugal separator

Claim 1

A CENTRIFUGAL SEPARATOR FOR A LIQUID MIXTURE CONTAINING SLUDGE WHICH COMPRISES THE COMBINATION OF A HOLLOW CENTRIFUGAL ROTOR FORMING A SEPARATING CHAMBER HAVING A PERIPHERAL SLUDGE ACCUMULATING SPACE, THE ROTOR HAVING A PERIPHERAL SLUDGE OUTLET FOR DISCHARGING SLUDGE FROM SAID SPACE, CONTROL MEANS FOR CONTROLLING THE DISCHARGE THROUGH SAID SLUDGE OUTLET TO ACCUMULATE A BODY OF SLUGE IN SAID SPACE, A PLURALITY OF GENERALLY CONCIAL, AXIALLY SPACED ANNULAR DISCS IN THE SEPARATING CHAMBER, ONE OF SAID DISCS EXTENDING OUTWARDLY FROM THE ROTOR AXIS BEYOND THE OUTER PERIPHERIES OF THE OTHER DISCS AND DIVIDING SAID OTHER DISCS INTO FIRST AND SECOND SEPARATE SETS OF DISCS, THE OUTER PERIPHERY OF SAID ONE DIVIDING DISC BEING ADJACENT SAID SPACE, THE PART OF THE SEPARATING CHAMBER CONTAINING SAID FIRST SET OF DISCS HAVING AN INLET FOR ADMITTING SAID MIXTURE TO THE CHAMBER, SAID INLET OPENING INTO THE SEPARATING CHAMBER AT A SUBSTANTIAL DISTANCE OUTWARDLY FROM THE INNER EDGES OF THE DISCS, THE PART OF THE SEPARATING CHAMBER CONTAINING SAID SECOND SET HAVING AN OUTLET FOR SEPARATED LIGHT LIQUID, SAID OUTLET EXTENDING FROM THE INNER EDGES OF THE DISCS, SAID SECOND CHAMBER PART ALSO HAVING AN OUTLET FOR SEPARATED HEAVY LIQUID, SAID HEAVY LIQUID OUTLET BEING SPACED RADIALLY OUTWARD FROM SAID LIGHT LIQUID OUTLET AND RADIALLY INWARD FROM SAID PERIPHERAL SLUDGE OUTLET, AND SAID ONE DISC HAVING A LIUQID FLOW PASSAGE INTERCONNECTING SAID DISC SETS AND LOCATED AT A GREATER RADIUS THAN THE INNERMOST EDGES OF THE DISCS BUT AT A SMALLER RADIUS THAN SAID INLET TO THE CHAMBER