Semi-bridge and full-bridge central-drive sludge thickeners with peripheral-drive, vertical-frame suspension for wastewater treatment equipment
The central-drive sludge scraper primarily consists of components such as a reduction drive mechanism, a vertical transmission shaft, scraper arms, underwater bearings, and sludge-scraping blades for the collection trough. The entire load of the sludge scraper is concentrated at the center of the fixed crossbeam bridge that spans the tank diameter. Raw water enters through a central distribution cylinder, spreading radially toward the peripheral overflow channels around the tank. As the flow velocity slows down, suspended solids in the water are separated and settle to the bottom of the tank, while the clarified supernatant liquid is discharged outside the tank via an overflow weir.
Through the reduction drive system and suspension-mounted components, the scraper blades efficiently collect the sludge into the central collection trough, which is then removed from the tank either by hydrostatic pressure or by pumping. This design features intermediate inflow and sludge discharge, combined with peripheral outflow, ensuring uniform water flow distribution. Additionally, it employs a self-suction sludge removal method driven by the liquid level difference, along with a scum-skimming and removal system, as well as an overload protection mechanism.
Furthermore, the control system can be networked with a microcomputer according to user requirements.
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