Device for directing fluid jet, for cleaning of surfaces - has insert rise pipe with end spray head for cleaning fluid feed, and valve in main outflow apertures of spray head

摘要

The rise pipe (5) outer surface can itself be cleaned by the device involving the directed spraying of fluid (7) from at least one main outflow aperture of the spray head (6) which is so formed that the aperture can be aimed at the surface of the rise pipe itself. - The spray head with the main outflow apertures is provided with a valve-type structure so that the spray head after spraying in the open state easily and rapidly can function in an empty manner and during spraying in the closed state limits leakage losses from the spray head.