Rotary brush screen at an overflow sill of a rainwater...

E - Fixed Constructions – 03 – F

Patent

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Details

E03F 5/12 (2006.01) E02B 8/02 (2006.01)

Patent

CA 2694298

In a rotary brush screen (1) at an overflow sill (21) of a rainwater relief system (20), comprising screen bars (2) extending transverse to the overflow sill (21) and strippers (4) engaging in the screen bars (2) in a comb-like manner, the strippers (4) are put into a curvilinearly extending, circling movement via a crank drive (8) in accordance with the invention by means of an actuating lever (6) in cooperation with a stationary support bearing (7), due to which circling movement the strippers (4) are guided from above into the spaces (3) between the screen bars (2) and out again at the bottom of the overflow sill (21). The risk of the discharge of solids into the waters as a result of a mechanical influence on the solids during the stripping operation is reduced thereby and the operational safety is increased.

L'invention concerne une grille de retenue (1) placée sur un seuil de déversoir (21) d'un système d'évacuation des eaux de pluie (20), cette grille comprenant des barreaux (2) qui s'étendent perpendiculairement au seuil de déversoir (21) et dans lesquels des éléments racleurs (4) s'engagent comme les dents d'un peigne. Selon l'invention, un mouvement circulaire s'étendant en forme de courbe est imprimé aux éléments racleurs (4) par l'intermédiaire d'une commande à manivelle (8) au moyen d'un levier d'actionnement (6) coopérant avec un palier d'appui fixe (7), ce mouvement permettant aux éléments racleurs (4) d'être introduits par le haut dans les interstices (3) entre les barreaux (2) et de ressortir de ces interstices (3) en bas au niveau du seuil de déversoir (21). L'invention permet de réduire le risque de déversement de matières solides dans les eaux sous l'effet d'une action mécanique exercée sur les matières solides lors du processus de raclage et d'accroître la sécurité de fonctionnement.

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