Insulated sleeved roll

• US 6,716,147 B1
• Filed: 06/16/2003
• Issued: 04/06/2004
• Est. Priority Date: 06/16/2003
• Status: Expired due to Fees

• Current Assignee: Pyrotek Incorporated
• Original Assignee: Pyrotek Incorporated
• Inventors: Hinkle, David Leslie, Schisler, Kenneth Royce
• Primary Examiner(s): Vo, Peter
• Assistant Examiner(s): JIMENEZ, MARC QUEMUEL
• Application Number:
  US10/462,427
• Time in Patent Office: 295 Days
• Field of Search: 492/45, 492/38, 492/39, 492/40, 492/46, 492/47, 492/54, 492/50, 492/49, 298/952.1, 298/952, 298/952.2, 298/952.13, 101/375, 193/37
• US Class Current: 492/45
• CPC Class Codes: C03B 35/18 Construction of the conveyor rollers ; Materials, coatings or coverings thereof
• CPC Class Codes: C03B 35/186 End caps, end fixtures or roller end shape designs
• CPC Class Codes: F16C 13/00 Rolls, drums, discs, or the like guide rollers in feeding webs B65H27/00; calender rolls, bearings therefor D21G1/02; rotary drums or rollers for heat-exchange or heat-transfer apparatus F28F5/02; Bearings or mountings therefor
• CPC Class Codes: F27B 9/2407 the conveyor being constituted by rollers (roller hearth furnace)
• CPC Class Codes: Y10T 29/49549 Work contacting surface element assembled to core

Abstract

An insulating roll comprising: a metal conduit having an outer peripheral portion; a plurality of discs having outer peripheries and preferably fabricated from an inorganic material positioned axially on and around the metal conduit; a tubular shell having an inner surface about and spaced apart from said outer peripheries; metallic foils extending between each or a plurality of said discs from said outer peripheral portion to and beyond said outer peripheries to the inner surface of said tubular shell, said metallic foils being in interference or frictional contact with said inner surface. A novel method for attaching the tubular shell to the conduit to simplify removal and replacement thereof is also described.

Claims

1. An insulating roll comprising:

A) a metal conduit having an outer peripheral portion including a working area and opposing ends;

B) a plurality of discs having outer peripheries, fabricated from an inorganic material and defining a disc bundle positioned axially on and around the metal conduit, said disc bundle having opposing ends;

C) a tubular shell having an inner surface about and spaced apart from said outer peripheries and including the working area and opposing ends;

D) metallic foils between each or a plurality of said discs extending from said outer peripheral portion to and beyond said outer peripheries to but not beyond the inner surface of said tubular shell, said metallic foils being in frictional contact between said inner surface and said outer peripheries.

2. The insulating roll of claim 1 wherein said tubular shell is fabricated from metal.

3. The insulating roll of claim 1 wherein said tubular shell is retained in place by the engagement of at least one key removably attached directly or indirectly to the outer periphery of said metal conduit outside of the working area and engaging at least one longitudinally oversized aperture in said tubular shell thereby allowing for axial and radial growth of said shell upon heating during operation while limiting rotational movement of the tubular shell.

4. The insulated roll of claim 3 further including a pair of annular spacers between said disc bundle opposing ends and said tubular shell outside of the working area which spacers engage the opposing ends of said disc bundle and said tubular shell.

5. The insulating roll of claim 4 further including a recess on said spacers that engages said at least one key.

6. The insulating roll of claim 4 wherein said at least one key is retained in place through the action of one or more bolts that penetrate said at least one key and engage said spacer or said outer periphery of said metal conduit.

7. An insulating roll comprising:

A) a metal conduit having an outer peripheral portion including a working area and opposing ends;

B) a plurality of discs having outer peripheries, fabricated from an inorganic material and defining a disc bundle positioned axially on and around the metal conduit, said disc bundle having opposing ends;

C) a tubular shell having an inner surface about and spaced apart from said outer peripheries and including a working area and opposing ends;

wherein said tubular shell is retained in place by the engagement of at least one key removably attached directly or indirectly to the outer periphery of said metal conduit outside of the working area and engaging a longitudinally oversized aperture in said tubular shell thereby allowing for axial and radial growth of said shell upon heating during operation while limiting rotational movement of the tubular shell.

8. The insulated roll of claim 7 further including a pair of annular spacers between said outer periphery and said tubular shell outside of the working area which spacers engage the opposing ends of said disc bundle opposing ends and said tubular shell.

9. The insulating roll of claim 8 further including a recess on said spacers that engages said at least one key.

10. The insulating roll of claim 8 wherein said at least one key is retained in place through the action of one or more bolts that penetrate said at least one key and engage said spacers or said outer periphery of said metal conduit.

11. The insulating roll of claim 7 further including metallic foils between each or a plurality of said discs extending from said outer peripheral portion to and beyond said outer peripheries to the inner surface of said tubular metal shell, said metallic foils being in frictional contact with said inner surface.

12. The insulating roll of claim 7 wherein said tubular shell is fabricated from a metal.