| 摘要 |
The invention relates to sedimentation apparatus including a motorized lifting mechanism for the rake arms (26, 27) of a sedimentation tank which comprise spaced vertical pairs of pivot links arms (31, 32, 33, 34) interconnecting the rake arm frame to a main contre rake arm drive cage (19) and wherein the rake arm frame (19) is in turn interconnected to a motorized jack lifting screw (39) by means of a cable (43) to raise the arm (26, 27) upon the pivoting of the pivot arms (31, 32, 33, 34). |
