Asphalt recycling apparatus

• US 5,335,989 A
• Filed: 08/07/1992
• Issued: 08/09/1994
• Est. Priority Date: 08/30/1991
• Status: Expired due to Term

• Current Assignee: Astencook Corporation
• Original Assignee: Tanaka Giken Co., Ltd.
• Inventors: Tanaka, Shigehiro
• Primary Examiner(s): JENKINS, ROBERT
• Application Number:
  US07/925,876
• Time in Patent Office: 732 Days
• Field of Search: 366/2, 366/4, 366/7, 366/25, 366/24, 366/45, 366/47, 366/48, 366/144, 366/147
• US Class Current: 366/25
• CPC Class Codes: E01C 19/1036 for in-plant recycling or for reprocessing, e.g. adapted to receive and reprocess an addition of salvaged material, adapted to reheat and remix cooled-down batches

Abstract

An asphalt recycling apparatus includes a combustion drum which is rotatably mounted in an enclosure; the outer surface of the drum is covered with an insulating material and the enclosure includes a storage member for a gas fueled burner for treating waste asphalt pieces in the combustion drum; the enclosure is provided with a pair of doors disposed on the front side of the casing and the combustion drum is mounted for tilting movement substantially about a horizontal axis; the pair of doors are provided with a support for the combustion burner so as to direct the flame of the burner to an opening in the combustion drum; a chute door is disposed below the front opening of the casing and hinged to the casing.

Claims

1. An asphalt recycling apparatus comprising a combustion drum having an open top, a frame rotatably supporting said combustion drum, said frame being mounted in a casing;

said combustion drum having a longitudinal axis extending through said open top;

said combustion drum having an outer surface covered by a heat insulating cover, said heat insulating cover having an inner surface spaced uniformly from the outer surface of said combustion drum, an insulating material being disposed between said heat insulating cover and said outer surface of said combustion drum;

driving means for rotating said combustion drum about said longitudinal axis thereof;

said combustion drum being tiltably mounted on said frame and said apparatus including a tilting handle for tilting said combustion drum relative to said frame;

said casing having an open portion having opposite sides and a pair of front doors each hingedly mounted on a said side of said open portion for closing said open portion;

said doors including a cross member extending from one of said doors and being detachably connected to said doors;

said cross member including a burner-supporting member positioned so as to direct the flame of a burner toward said open top of said combustion drum when in use; and

said casing including a chute door disposed below said open portion;

said chute door being pivotally attached to said enclosure so as to pivot about a generally horizontal axis between an up position and a down position.

2. An asphalt recycling apparatus as claimed in claim 1 wherein a burner is provided and said casing having a housing for a gas cylinder to which said burner is connected.

3. An asphalt recycling apparatus according to claim 1, wherein said casing (2) is provided with a shelf on which a fire extinguisher is to be loaded.

4. An asphalt recycling apparatus according to claim 1, wherein said one end of the cross member (7) is rotatably fixed to a first bracket (12A) projecting from the back surface of said one of the front door, and said the other end of the cross member (7) is provided with a through hole which is adapted to detachably engage with a pin mounted on a second bracket (12B) projected from the back surface of said the other one of the front door.

5. An asphalt recycling apparatus according to claim 1, wherein said burner (8) is supported on said burner-supporting member (70) comprising a cylindrical portion (71) for fitting said burner therein, a leg portion (70B) for sustaining the cylindrical portion (71), and a stand portion (74) supporting the leg portion, said stand portion (74) being fixed through a screw to the cross member (7).