| 摘要 |
<p>A refiner disc (28, 30) for a fiber refiner (20) having a refiner disc removal device (22) that is integral with and retained by the disc (28, 30) during refiner operation. The removal device (22) includes a biasing element (24) that is extended from the disc (28, 30) against its mounting surface (26) to urge the disc (28, 30) away from the mounting surface (26). In its preferred embodiment, the biasing element (24) is a threaded removal plug (32) in a threaded hole (34) in the disc (28, 30). The plug (32) preferably is of one-piece, unitary and headless construction, engaged by a toll (74) during removal, and is no longer than the disc cross section. With the mounting bolts (64) loosened or removed, the plug (32) is engaged by the tool (74) and rotated to displace it relative to the disc (28, 30) such that a portion of the plug (32) bears against the mounting surface (26). Threaded engagement between the plug (32) and the disc (28, 30) or a plug carrier mounted in the disc urges the disc (28, 30) away from the mounting surface (26) as the plug (32) is further rotated until the disc (28, 30) breaks free.</p> |
