Surge rinsing device, for cleaning drainage channel, uses float mechanism for releasing rinsing flap when water level held behind latter reaches given level

摘要

The surge rinsing device has an automatically-controlled pivoted rinsing flap (2), supported vertically in the drainage channel (1) via a pivot linkage (8,8'), with an associated float mechanism (4,5) used for release of the rinsing flap, for providing a surge of water, when the water held behind the rinsing flap reaches a given level.