Scraper blade with a cavity to block debris build-up

摘要

A scraper blade is provided for cleaning debris from a moving conveyor belt. A base of the blade attaches to a holder and an integral blade portion provides a distal edge for scraping. A concave relief cavity having at least one axis of generation extending at an angle to the plane through the blade portion and the edge provides localized vortex action to spin the residual debris and block build-up. As a consequence, solid build-up between the entire blade face and the conveyor belt cannot occur and blade planing is prevented. In an alternative embodiment, multiple cavities are formed on the blade.