| 摘要 |
A cleaning device for a water treatment sedimentation tank and characterized by the highly efficient removal of the sediment from the bottom of the tank and without requiring the draining thereof, and which comprises a cleaning assembly positioned within the tank and adapted to reciprocate along the floor to move the sediment into one or more gutters. The cleaning assembly is supported upon rails mounted along the lower portion of the side walls of the tank, and it is driven by a direct drive system which includes a rack carried by each rail, a submersible electric motor carried by the cleaning assembly, and a drive shaft rotatably mounted on the assembly and having a pinion at each end which operatively engages the adjacent rack. The cleaning assembly further includes a pair of spaced apart guide rollers at each of its ends, with each pair being positioned to engage the side edge of the adjacent supporting rail at spaced points to thereby maintain the accurate alignment of the assembly within the tank during its reciprocation.
|
