Peripheral (center) drive sludge suction machine and sludge thickener
The center‑drive sludge scraper consists primarily of a reduction‑drive mechanism, a vertical drive shaft, scraper arms, underwater bearings, and a sludge‑collection trough scraper. The entire load of the scraper is borne at the center of the fixed service bridge that spans the tank diameter. Raw water, distributed through a central distribution cylinder, flows radially toward the peripheral overflow trough; as the flow velocity decreases, suspended solids are separated and settle to the tank bottom. The clarified supernatant is discharged from the tank via an overflow weir into the effluent channel. Through the reduction drive and suspended‑type transmission components, a scraper collects the sludge into the central collection trough, from where it is removed from the tank by hydrostatic pressure or a pump. With mid‑tank inflow and sludge discharge, and peripheral outflow, uniform flow distribution is ensured. Self‑priming sludge removal based on liquid‑level differentials is employed, along with a scum‑skimming and removal system and overload protection. Upon customer request, the control system can be networked with a microcomputer.
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