CENTRIFUGAL SEPARATOR FOR FIBROUS MATERIAL

• US 3,672,503 A
• Filed: 05/15/1969
• Issued: 06/27/1972
• Est. Priority Date: 05/15/1968
• Status: Expired due to Term

• Current Assignee: Andre Mark
• Original Assignee: Andre Mark
• Inventors: Mark, Andre
• Primary Examiner(s): Lutter, Frank W.
• Assistant Examiner(s): Hill, Ralph J.
• Application Number:
  US04/824,949
• Time in Patent Office: 1,139 Days
• Field of Search: 209/143,144,210,211 55/DIG.37
• US Class Current: 209/722
• CPC Class Codes: B04C 1/00 Apparatus in which the main direction of flow follows a flat spiral ; so-called flat cyclones or vortex chambers
• CPC Class Codes: B04C 7/00 Apparatus not provided for in group B04C1/00, B04C3/00, or B04C5/00; Multiple arrangements not provided for in one of the groups B04C1/00, B04C3/00, or B04C5/00; Combinations of apparatus covered by two or more of the groups B04C1/00, B04C3/00, or B04C5/00
• CPC Class Codes: B27N 3/14 Distributing or orienting the particles or fibres

Abstract

A centrifugal separator with a circular inner chamber and an outer chamber of decreasing cross section from a relatively large tangential inlet to a relatively small tangential outlet. The two chambers communicate through a semicircular arrangement of individually adjustable blades forming a portion of the boundary between the chambers extending between the tangential inlet and outlet.

Claims

1. A centrifugal separator for separating relatively course fibers from relatively fine fibers comprising a spiral-shaped body, said body being provided with a tangentially disposed inlet passage for the entry of an air current carrying fibers for separation and a tangentially disposed outlet passage on the opposite side of said body from said inlet passage, a plurality of movable vanes disposed in a semi-circular arrangement within said body, extending between said inlet and outlet passages and separating the interior of said body into an outer spiral passage and an inner circular passage, a central outlet passage communicating with said inner passage and disposed perpendicular to the plane of said inlet and outlet passages, and means for independently adjusting each vane to provide an air current path for recycling certain fibers from said outer passage to said inner passage and back to said outer passage.

2. A centrifugal separator as set forth in claim 1 wherein the vanes adjacent said inlet passage are inclined outwardly into said outer passage and the vanes adjacent said outlet passage are inclined inwardly into said inner passage.