Heated conveyor belt scraper
AssigneeGeneral Steel and Supply Company
InventorEugene W. Fisher
Life of this patent
Estimating the term…
Abstract
A scraper blade is provided for a conveyor belt for removing material such as hot asphalt mix which would otherwise tend to stick to the conveyor belt surface. A scraper blade assembly is mounted to a swinging arm which is pivoted to the conveyor frame and positioned near the underside of the discharge end of the conveyor. A blade is mounted transversely to the conveyor belt for scraping material from its surface, and heating elements are provided for heating the blade to prevent material build-up on the scraper. A control system including sensors, a control valve and a control cylinder is provided for pivoting the blade away from the conveyor to allow passage of the conveyor splice without damaging it, or in response to a conveyor belt stoppage.
Claims13
A scraper for a conveyor belt having a support frame, comprising:
- a scraper blade;
- a scraper blade support and means connecting said scraper blade thereto;
- means for movably connecting said support to the frame of the conveyor for movement thereof between a first position in which the scraper blade is in contact with the conveyor belt and a second position in which the blade is moved away from the conveyor belt;
- means for applying heat to said scraper blade;
- means for sensing the position of a splice of the moving conveyor belt in relation to the position of the scraper;
- actuator means operatively connected to said scraper blade support for movement thereof between said first and second positions;
- and
- control means connected to said sensing means and said actuator means and operative to move said scraper blade away from said conveyor belt to allow passage of the splice, and further operative to move said scraper blade away from said conveyor belt in the event of stoppage thereof.
A material handling conveyor belt having a scraper for removing residual material adhering thereto, comprising:
- a conveyor belt assembly having a frame, a flexible conveyor belt and guide and drive means therefor;
- a scraper support arm;
- a scraper blade attached to said support arm;
- heating means attached to said support arm for heating said scraper blade;
- means pivotally mounting said support arm to said conveyor frame for permitting movement of said scraper blade into and away from contact with said conveyor belt;
- actuator means connected for movement of said support arm;
- sensing means positioned adjacent said conveyor belt for sensing passage of the conveyor belt splice;
- motion sensing means for sensing stoppage of the conveyor belt;
- and
- control means connected to said splice sensing means, said motion sensing means and said actuator means and operative to cause said scraper blade to be moved away from said conveyor belt during passage of the splice past the location of the scraper, and during stoppage of the conveyor belt.
Dependencies are inferred from the claim text.