FR2478157A1

FR2478157A1 - Self-cleansing screen for open channel water feed - uses motorised endless chains to drive combs up vertical bars of grill with hooked heads

Info

Publication number: FR2478157A1
Application number: FR8005585A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1980-03-11
Filing date: 1980-03-11
Publication date: 1981-09-18
Also published as: FR2478157B1

Abstract

The self-cleansing screen may be used on open channels feeding water to hydro-electric plant. It uses motor (8)- driven endless chains (4) to displace transverse combs (10) through the grill. Parallel inclined bars (1) at 15 mm centres constitute the grille which is supported by traverses (2) beneath, and has hooked top ends (1A) which guide combs (10) during the return movements (M). Combs (10) may be provided at close centres over the full height of the screen, and may be attached to chains (4) driven by electric motor (8) with reduction gearing. A horizontal flap comb (11) at the base may allow combs to make the bottom return movement (M1), and the screen may pivot out of the channel to facilitate maintenance.

Description

GRILLE A RATEAUX A CYCLE
CONTINU POUR CANALISATIONS ET
PRISES D'EAU
Dans les canalisations en plein air, on a souvent besoin, à l'entrée de l'eau dans les turbines ou les réservoirs qu'elle doit alimenter, dtarrêter les feuilles ou autres détritus qui sont tombés dans le canal ou sont en suspension dans l'eau. Bour celas on utilise généralement des grilles qui arrêtent le tout ; mais au bout d'un certain temps:lggit engorgées par ces détritus et feuilles entassés qu'il est urgent de supprimer. Cette opération de nettoyage se fait le plus souvent à la maint à l'aide dtun rateau, mais prend beaucoup de temps, est pénible et parfois dangereuse.CYCLE RAKE GRID
CONTINUOUS FOR PIPES AND
WATER INTAKE
In open drains, there is often a need, at the entry of water into the turbines or the tanks which it must supply, to stop the leaves or other detritus which have fallen into the channel or are suspended in the water. 'water. Bour celas we generally use grids that stop everything; but at the end of a certain time: lggit engorged by these piled up detritus and leaves which it is urgent to remove. This cleaning operation is most often done by maintaining using a rake, but takes a long time, is tedious and sometimes dangerous.

L'appareil préconisé débarrasse le cours d'eau des corps in désirables. The recommended device rids unwanted bodies of water.

La figure I donne l'idée de la réalisation ; cependant, elle n'est pas tracée à l'échelle car ses dimensions relatives dépendent de cas particuliers. Elle a été schématisée et lton ne voit apparattre qu'un seul barreau (1) alors qu'il y a un barreau tous les 15 millimètres sur l'ensemble de la largeur de l'appareil ; ceci, afin de rendre la lecture du dessin plus facile. Figure I gives the idea of the realization; however, it is not drawn to scale because its relative dimensions depend on particular cases. It has been shown schematically and lton sees only one bar appear (1) while there is a bar every 15 millimeters over the entire width of the device; this is to make the drawing easier to read.

La partie grille est constituée de barreaux (1) espacés entre eux tous les 15 millimètres et soudés sur des entretoises tubulaires(2) et fixés à deux flasques constituant l'ensemble du chassis (3). The grid part consists of bars (1) spaced between them every 15 millimeters and welded to tubular spacers (2) and fixed to two flanges constituting the whole of the chassis (3).

Ces flasques comprennent deux cornières (4) fixées parallè~ lement qui assurent le support du roulement des brins (tendu et retour) de la channe (5). These flanges include two angles (4) fixed parallel ~ lement which provide support for the bearing of the strands (tensioned and return) of the channe (5).

Quatre pignons dentés (6) entratnent les deux channes. Four toothed pinions (6) drive the two chains.

L'arbre supérieur (7) est entraîné par un moteur électrique (8).The upper shaft (7) is driven by an electric motor (8).

L'autre arbre, immergé, (9) durant le service, assure le renvoi0
Ces flasques reprennent, à chaque extrémité, les paliers des arbres.The other tree, submerged, (9) during service, ensures the return0
These flanges take up, at each end, the bearings of the trees.

Sous l'action du moteur (8) faisant actionner les pignons (6) supérieurs, les rateaux dont le nombre est variable selon la hauteur de l'appareil entratnés par les deux channes (5) dans le sens indiqué par les flèches, raclent les barraux (la grille) (1) entrarnanf vers le haut l'ensemble des détritus. Ensuite, contournant la courbure de la grille, redescendent vers le bas laissant ainsi tomber leur chargement de détritus soit sur un plancher, soit dans une goulotte (12). Under the action of the motor (8) actuating the upper pinions (6), the rakes, the number of which varies according to the height of the device driven by the two chains (5) in the direction indicated by the arrows, scrape the barraux (la grille) (1) entrarnanf up all the detritus. Then, bypassing the curvature of the grid, descend downwards thus dropping their load of trash either on a floor or in a chute (12).

Les rateaux (10) atteignant la partie inférieure immergée, contournent les pignons pour remonter et passent en soulevant un clapet (ll) composé de petits barreaux pour passer sur la partie supérieure de la grille et reprendre son cycle normal de nettoyage. The rakes (10) reach the submerged lower part, bypass the pinions to go up and pass by lifting a valve (ll) composed of small bars to pass on the upper part of the grid and resume its normal cleaning cycle.

La figure Il représente en coupe l'appareil et complote la figure I pour les différentes parties du haut et partie immergée montrant le clapet en mouvement. Figure II shows the device in section and plots Figure I for the different parts of the top and submerged part showing the valve in motion.

Sur les dessins fournis, les bâtis et cadres,reliant les diverses pièces et maintenant l'appareil, n'ont pas été représentés car ils ne présentent aucune originalité. On the drawings provided, the frames and frames, connecting the various parts and now the device, have not been shown because they have no originality.

Les vannes et déversoirs de trop plein, outre accessoires classiques n'ont pas été représentés. The overflow valves and overflows, in addition to conventional accessories, have not been shown.

Toutes micro-centrales, minoteries, stations dépuration ou toute autre installation sont susceptibles dttre intéressées. All micro-plants, flour mills, wastewater treatment plants or any other installation are likely to be interested.

Claims

1 - Apparatus with vertical grids and horizontal rakes with continuous cycle for channeling and water intake entirely or partially under open sky; It is characterized by the new shape of the grid which consists of vertical grids joining the bars, curved at their top allow the horizontal rakes to continue the cycle.

2 - Device according to claim 1101 characterized by these horizontal rakes which open the entire width of the device and are driven by chains driven by an electric reduction motor.

3 - Apparatus according to claim n01 characterized by a number of rakes which varies according to the total height of the apparatus to allow a more in cycle taught cleaning the vertical bars and maintaining the spacing of the drive chains on their slides .

4 - Apparatus according to claim n01 characterized in that the submerged part consists of an obile art formed by a horizontal valve and bars, letting pass the rakes from the downstream and lower part of the device to the upstream part to find yourself in front of the vertical ears and accomplish

again its full cycle.

50 Apparatus according to claim 110 7 characterized in that the entire apparatus is lied on pivots. These pivots fixed at the places provided in the Civil Engineering allow to tilt the device to the horizontal position to facilitate its maintenance.