Spraying nozzle for regulating a rate of flow per unit of time

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 1/34 (2006.01) B05B 7/04 (2006.01)

Patent

CA 2163533

A nozzle sleeve (1) contains supply channels (2), feeding channels (3, 5, 22, 24), concentric channels (4, 6), tangential channels (8) and a ring-shaped channel (7), as well as a core (13) which covers the various channels, so hermetically that they form ducts into which a liquid flows in and is pushed in a predetermined direction of rotation into the large concentric channel (4), then flows in the opposite direction of rotation into the small concentric channel (6) and finally flows once again in the predetermined direction of rotation through the feeding channels (5) and reaches a ring-shaped channel (7) from where it is sprayed out through the bore (9) of the nozzle sleeve (1). The changes in the direction or rotation cause turbulences which represent a braking force for the liquid flowing under pressure. The intensity of this braking force is directly proportional to the liquid pressure, so that the rate of flow per unit of time is held at least approximately constant.

Une douille (1) de buse comprend des canaux d'amenée (2), des canaux d'alimentation (3, 5, 22, 24), des canaux concentriques (4, 6), des canaux tangentiels (8) et un canal annulaire (7), ainsi qu'un noyau (13) qui recouvre les différents canaux si hermétiquement que ceux-ci forment des conduits dans lesquels un liquide s'écoule dans une direction d'écoulement telle qu'il est poussé dans le grand canal concentrique (4) dans une direction prédéterminée de rotation, puis s'écoule dans un petit canal concentrique (6) dans la direction opposée, et finalement s'écoule dans des canaux d'alimentation (5), à nouveau dans la direction de rotation prédéterminée, jusqu'à ce qu'il parvienne à un canal annulaire (7) duquel il sort pulvérisé par le trou (9) de la douille (1) de la buse. Les changements de la direction de rotation provoquent des turbulences qui représentent une force de freinage pour le liquide s'écoulant sous pression, l'intensité de la force de freinage étant directement proportionnelle à la pression du liquide, de sorte que le débit par unité de temps est maintenu au moins approximativement constant.

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