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US 2001/0023814 A1Published application
Device for cleaning a conveyor belt
AssigneeCEFLA Soc. Coop. a.r.l.
InventorsLuigi Franzoni, Massimo Dovadola
Life of this patent
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AssigneeCEFLA Soc. Coop. a.r.l.
InventorsLuigi Franzoni, Massimo Dovadola
Estimating the term…
The vessel or vessels (7, 7′, 7″) in contact with the solvent used for cleaning the conveyor (T) are designed and arranged in such a way that they are enclosed, and the portion of conveyor belt which is wetted with solvent is also isolated by suitable means from contact with the external environment containing the ventilation air of the painting chamber. In a preferred solution, where rotating scraping cylinders (1, 5) are used, the solvent vessel (7, 7′, 7″) is placed in such a way that it is enclosed by the two successive cleaning cylinders, by the portion of conveyor belt which runs between these cylinders, and by its lateral walls which are as close as possible to the said cylinders and to the said portion of the conveyor belt. At the end of each painting cycle, clean solvent is made to flow into the solvent vessel and the cleaning cylinders and the conveyor belt of the painting machine are temporarily kept active so that they clean themselves.
Device for cleaning a conveyor belt comprising an upper active branch (T1) and a lower return branch (T2) running around rollers (R), in order to remove substances, such as paint, deposited on it, of the type comprising at least one vessel (7, 7′, 7″) containing a solvent for the substances and means to distribute the solvent onto at least one portion of the return branch (T2) of the said conveyor to soften the substances deposited on it, and comprising at least two successive units (2) for scraping and cleaning the said return branch (T2) to remove the substances with the solvent for recovery and removal by suitable means (202), further comprising means (302, 207, 307) for enclosing in a closed environment which is isolated from the external environment the at least one portion of the return branch (T2) of the conveyor and the parts of the said scraping and cleaning units in contact with the solvent, in order to prevent or limit the evaporation and dispersion of the solvent in the said external environment.
Dependencies are inferred from the claim text.