Multistage cyclonic separator

• US 3,925,045 A
• Filed: 12/07/1972
• Issued: 12/09/1975
• Est. Priority Date: 12/07/1972
• Status: Expired due to Term

• Current Assignee: Paul J. Cheng
• Original Assignee: Paul J. Cheng
• Inventors: Cheng, Paul J.
• Primary Examiner(s): Lutter, Frank W.
• Assistant Examiner(s): Prunner, Kathleen J.
• Application Number:
  US05/313,098
• Time in Patent Office: 1,097 Days
• Field of Search: 55/391,392,394,397,456,457,459,336,337,318,398,322,466,345 209/144
• US Class Current: 55/345
• CPC Class Codes: B01D 45/12 by centrifugal forces centrifuges B04B; cyclones B04C
• CPC Class Codes: B04C 3/00 Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct combined with other devices B04C9/00

Abstract

A separator comprised of a chamber containing a plurality of superimposed conical sections of decreasing inlet diameters, the diameters of the sections forming passageways between the sections for the separation of particulate matter passed through the separator in helical flow.

Claims

1. A SEPARATOR COMPRISING:

A. A CHAMBER;

B. A TRUNCATED CONE COMPRISED OF A PLURALITY OF COAXIALLY ALIGNED CONICAL SECTIONS OF DECREASING INLET DIAMETERS POSITIONED IN SUPERIMPOSED RELATIONSHIP, THE UPPER PORTION OF THE UPPERMOST CONICAL SECTION FORMING THE UPPER PORTION OF SAID CHAMBER, THE LOWERMOST PORTION OF SAID UPPERMOST CONICAL SECTION AND THE REMAINING CONICAL SECTIONS BEING POSITIONED WITHIN SAID CHAMER. SAID TRUNCATED CONE TERMINATING WITHIN SAID CHAMBER AT AN INTERMEDIATE POINT ALONG THE VERTICAL AXIS THEREOF, EACH OF SAID CONICAL SECTIONS HAVING AN INLET DIAMETER GREATER THAN ITS OUTLET DIAMETER, THE LOWER PORTION OF SAID UPPERMOST CONICAL SECTION OF SAID TRUNCATED CONE EXTENDING ANGULARLY INTO SAID CHAMBER AND BENEATH THE UPPER RIM OF THE NEXT LOWER CONICAL SECTION, EACH OF THE LOWER CONICAL SECTIONS POSITIONED WITHIN SAID CHAMBER HAVING ITS INLET OR UPPER RIM POSITIONED WITHIN THE OUTLET OR LOWER RIM OF THE NEXT SUPERIMPOSED SECTION TO FORM AN ANNULAR PASSAGEWAY THEREBETWEEN, EACH OF SAID CONICAL SECTIONS CONSISTING OF AN UPPER CONICAL PORTION AND A LOWER CONICAL PORTION, THE WALLS OF SAID UIPPER CONICAL PORTION BEING POSITIONED AT A FIRST ACUTE ANGLE RELATIVE TO THE VERTICAL AXIS OF SAID SEPARATOR AND THE WALLS OF SAID LOWER CONICAL PORTION BEING POSITIONED AT A SECTION ACUTE ANGLE RELATIVE TO SAID AXIS, SAID SSECOND ANGLE BEING LESS THAN SAID FIRST ANGLE;

E. A COLLECTION SECTION IN A LOWER PORTION OF SAID CHAMBER IN OPEN COMMUNICATION WITH SAID PASSAGEWAY;

D. FIRST OUTLET CONDUIT MEANS OPENING DOWNWARDLY FROM SAID COLLECTION SECTION;

E. SECOND OUTLET CONDUIT MEANS OPENING DOWNWARDLY FROM SAID HAMBER, THE UPPER TERMINUS OF SAID SECOND OUTLET CONDUIT BEING POSITIONED WITHIN THE LOWER PORTION OF THE LOWEST OF SAID CONICAL SECTIONS AND IN SPACED RELATIONSHI THEREFROM TO FORM AN ANNULUS THEREBETWEEN;

AND F. AN INLET CONDUIT MEANS OPENING TANGENTIALLY INTO AN UPPER PORTION OF SAID UPPERMOST CONICAL SECTION ORMING THE UPPER PORTION OF SAID CHAMBER.

2. The separator of claim 1 in which said second outlet conduit means comprises an upper member having a lower, outwardly extending portion proximate its terminus and a lower member having an upper terminus positioned within said lower, outwardly extending portion of said upper member.