Apparatus for separating dust and other particles from suspension in a gas

Claim 1

A SEPARATOR FOR SEPARATING DUST OR OTHER PARTICLES FROM A GAS IN WHICH THEY ARE SUSPENDED, COMPRISING IN COMBINATION A VERTICAL, STATIONARY CASING HAVING AN UPPER CYLINDRICAL PORTION AND PROVIDED WITH A LATERAL OUTLET NOZZLE; A SHAFT, MOUNTED FOR ROTATION WITHIN SAID PORTION COAXIALLY THEREWITH, A CENTRIFUGAL FAN SECURED TO SAID SHAFT IN FRONT OF SAID OUTLET NOZZLE; A HUB SECURED TO SAID SHAFT BELOW SAID FAN AND PROVIDED WITH A FLARED BASE; A PLURALITY OF FRUSTO-CONICAL PLATES STACKED ABOVE SAID BASE AROUND SAID HUB, AND UNIFORMLY SPACED FROM ONE ANOTHER IN A VERTICAL DIRECTION, AN ANNULAR SPACE BEING LEFT AROUND SAID HUB AND THE UPPERMOST OF SAID PLATES BEING CONNECTED BY ITS INNER PERIPHERY TO THE OUTLET OF SAID FAN, SAID PLATES HAVING FURTHER AN OUTER DIAMETER GREATER THAN THE DIAMETER OF SAID BASE AND BEING PROVIDED, OUTWARDLY OF SAID BASE WITH PERFORATIONS, THE PERFORATIONS OF THE VARIOUS PLATES BEING LOCATED ABOVE ONE ANOTHER WHEREBY VERTICAL PASSAGES ARE FORMED THROUGH THE PLATE STACK; FRUSTO-CONICAL ANNULI SECURED TO SAID CASING AROUND SAID PLATES AT A DISTANCE FROM THE INNER WALL OF SAID CASING, THE INNER EDGE OF EACH SAID ANNULI BEING RESPECTIVELY LOCATED AT THE SAME LEVEL AS THE OUTER EDGE OF EACH SAID PLATES; AND A GAS INLET NOZZLE EXTENDING THROUGH THE LOWER PART OF SAID CASING AND TERMINATING BELOW SAID BASE IN A CONICAL MOUTH PIECE SUBSTANTIALLY COAXIAL WITH SAID CASING.