Reversible scraper blade for cleaning conveyor belt

B - Operations – Transporting – 65 – G

Patent

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Details

B65G 45/12 (2006.01)

Patent

CA 2216373

A reversible belt scraper is provided with opposite belt scraping surfaces (22, 24) and is adapted to be reversed by inverting. The belt scraper is formed with a pair of metal side frames (14, 15), and a transversely elongated body (30) is formed as a block of rubber defining the belt scraping surfaces on opposite sides. A pair of fiberboard backing plates (40) are positioned to support the rubber block against forces tending to bend or deflect the rubber. The fiberboard backing plates wear at a rate faster than the wear rate of the rubber block and assure full contact between the belt and the rubber scraping body. In a further embodiment, ceramic bricks (121) are embedded within the rubber block with wear surfaces at the rubber scraping surface. The rubber, brick and backing plates are formed in modular segments which are stacked end- to-end between the frames and retained by metal slugs (18) which extend through the segments.

Lame racleuse réversible servant à nettoyer des bandes transporteuses, présentant des surfaces de raclage opposées (22, 24) et dont le fonctionnement peut être inversé. Elle comporte une paire de cadres métalliques latéraux (14, 15) et un corps s'étendant dans un sens transversal (30) et consistant en un bloc de caoutchouc définissant les surfaces de raclage des côtés opposés. Une paire de plaques de support en fibres (40) est placée de manière à renforcer la résistance du bloc de caoutchouc à des forces tendant à l'incurver ou à le déformer. Ces plaques s'usent plus rapidement que le bloc de caoutchouc et permettent d'assurer un contact total entre la bande et le corps de raclage en caoutchouc. Dans un autre mode de réalisation, des briques en céramique (121) sont encastrées dans le bloc en caoutchouc et comportent des surfaces d'usure affleurant au niveau de la surface de raclage en caoutchouc. Les plaques en caoutchouc, en briques ou de support se présentent sous la forme de segments modulaires empilés bout-à-bout entre les cadres et retenus par des barrettes en métal (18) s'étendant à travers ces segments.

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