| 摘要 |
An apparatus (10) for cleaning algae and debris from a water treatment tank (12) includes a carriage (14) that is mounted for movement while extending over a clean water flow channel (C) of the treatment tank. A motor (18) drives the carriage (14) around the tank (12) while a guide (32, 50, 52) maintains the carriage in the proper position for cleaning. A series of brush assemblies (42, 44, 46) are connected to a frame (16) of the carriage (14). The brushes (42, 44, 46) of these assemblies are adapted to engage and clean the weir (W), baffle (B), spillway (S) and clear water flow channel (C) of the tank (12) as the carriage (14) moves. Additionally, a directional controller (22) automatically controls the direction of operation of the motor (18) and hence the direction of movement of the carriage (14). The directional controller (22) also includes a sensor (60, 62, 68) adapted to sense any obstructions, such as a service walkway (T), extending across the movement path of the carriage (14). Upon sensing an obstruction, the direction of movement of the carriage (14) is reversed.
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