Nozzle assembly for a high-pressure cleaning device

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 1/16 (2006.01) B05B 1/12 (2006.01) B08B 3/02 (2006.01)

Patent

CA 2508981

The invention relates to a nozzle assembly for a high-pressure cleaning device, comprising a low-pressure nozzle (12), a high-pressure nozzle (22) mounted in the latter, a jet pipe (1) with a sealing collar (6) that can be introduced into the high-pressure nozzle (22), a bypass course that bypasses the high-pressure nozzle (22) and leads to the low-pressure nozzle (12) and displacement means (31), which modify the distance between the sealing collar (6) and the high-pressure nozzle (22) in such a way that in the high-pressure position the sealing collar (6) lies against the high-pressure nozzle (22), thus sealing the latter and interrupting the connection between the jet pipe (1) and the bypass course, whereas in a low-pressure position the sealing collar (6) is distanced from the high-pressure nozzle (22), thus releasing the connection between the jet pipe (1) and the bypass course. The aim of the invention is to achieve a particularly simple and effective construction. To achieve this, the jet pipe (1) has a well-shaped housing (3), which surrounds the sealing collar (6) and in which the low-pressure nozzle (12) and the high- pressure nozzle (22) are sealed and mounted in a freely displaceable manner relative to the internal wall of the housing (3), and the displacement means (31) displace the low-pressure nozzle (12) and the high-pressure nozzle (22) in the housing (3) in the longitudinal direction of the latter, against and away from the sealing collar (6).

L'invention concerne un ensemble buse conçu pour un appareil de nettoyage haute pression, comprenant une buse basse pression (12), une buse haute pression (22) disposée dans cette buse basse pression, un tuyau éjecteur (1) pourvu d'une douille d'étanchéité (6) qui peut être introduite dans la buse haute pression (22), une dérivation contournant la buse haute pression (22) et menant à la buse basse pression (12), ainsi que des moyens de déplacement (31) qui modifient la distance séparant la douille d'étanchéité (6) et la buse haute pression (22), de façon qu'en position haute pression, la douille d'étanchéité (6) repose contre la buse haute pression, ce qui étanchéifie cette dernière et interrompt la liaison entre le tuyau éjecteur (1) et la dérivation, tandis qu'en position basse pression, la douille d'étanchéité (6) est éloignée de la buse haute pression (22) et permet la liaison entre le tuyau éjecteur (1) et la dérivation. L'objectif de cette invention est de concevoir un ensemble buse présentant une structure particulièrement simple et facile à monter. A cet effet, le tuyau éjecteur (1) comporte un logement cupuliforme (3) qui entoure la douille d'étanchéité (6) et dans lequel la buse basse pression (12) ainsi que la buse haute pression (22) sont montées de manière étanche de façon à pouvoir se déplacer librement par rapport à la paroi interne du logement (3). En outre, lesdits moyens de déplacement (31), la buse basse pression (12) ainsi que la buse haute pression (22) se déplacent dans le logement (31), dans la direction longitudinale de ce dernier, de façon à se rapprocher ou à s'éloigner de la douille d'étanchéité (6).

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