| 摘要 |
Apparatus is provided for the removal of settled solids from bodies of liquids. The apparatus comprises a generally horizontal collection surface (1) composed of a plurality of juxtaposed elongate channels (3) each of which has downwardly convergent walls (4) that terminate in a generally U-shaped collection gutter (5) at the bottom of the channel. An elongate tubular closure (6) is associated with an upper region of the U-shaped gutter with each closure being hydraulically or pneumatically inflatable in cross-sectional configuration. Each closure has an inoperative condition in which at least a portion (5a) of the width of the gutter is open to allow solids to settle onto the bottom of the gutter and an operative condition in which the tubular closure is expanded across the width of the upper region of the gutter in order to close same. In the latter condition a passageway is formed in the lower part of the gutter for the longitudinal flow of liquid to flush settled solids (14) from the gutter. |
