Scraper bias apparatus

A torsion unit for use with a conveyor belt scraper which includes a housing, a first flange on the housing, a tubular component which has at least one angular inner surface, an angular extension member which is located at least partly inside the tubular component and the housing, at least one resiliently deformable torsion element which is inside the tubular component and which acts between opposed surfaces of the angular inner surface and the extension member, and a second flange which is on the tubular component and which opposes the first flange, the second flange and the tubular component being rotatable to a limited extent relatively to the first flange, and a locking device for locking the second flange to the first flange at a selected angular orientation.

A scraper arrangement for use with a conveyor belt which includes an elongate member having an elongate axis arranged parallel to a width dimension of the conveyor belt and to which at least one scraper blade is mounted laterally with respect to the elongate axis, a support for the elongate member which allows at least limited rotation of the elongate member about the elongate axis and relatively to the conveyor belt and to the support with the scraper blade in scraping engagement with the belt, a tubular component which is mounted for at least limited rotation relatively to the elongate member and which has at least one angular inner surface, an angular extension member which is fixed to the elongate member and which is located at least partly inside the tubular component, at least one resiliently deformable torsion element, at least partly inside the tubular component, acting between the angular inner surface and the extension member, a bracket to which the support is mounted so that the support is slidably movable, to a limited extent, relatively to the bracket, and a locking device for locking the tubular component at a selected angular orientation relatively to the bracket.

A scraper arrangement for use with a conveyor belt comprising:

• a support situated adjacent to the conveyor belt, a tubular component mounted for angular displacement relative to the support having an inner surface, an extension member positioned within the tubular component, a resiliently deformable torsion element situated between the inner surface of the tubular component and the extension member, an elongate member having an elongate axis arranged parallel to the conveyor belt, the elongate member being coupled to the extension member for rotational displacement around the elongate axis, a scraper blade mounted to the elongate member laterally with respect to the elongate axis for scraping engagement with the conveyor belt, and a locking device for retaining the tubular component at a selected angular orientation with respect to the support.