Abstract

In a sludge treatment installation, a movable carriage is arranged transversely above a work surface of a floor. The movement of the carriage by longitudinal translation over the floor is initiated by a first drive shaft carrying a toothed wheel meshing with a drive chain. A second chain helps to guide the carriage. On the carriage is provided a rotary turning tool which engages in the sludge. Driven in rotation by a second drive shaft independent of the first, it includes pairs of semi-cylindrical paddles fixed substantially symmetrically by one of their edges on either side of a shaft driven by the second drive shaft. The two paddles in each pair of paddles are asymmetrical as a result of having different radii, with a difference at least equal to about 5%. Forced ventilation acts directly on the paddles.

IPC Classes  ?

• F26B 25/08 - Parts thereof
• F26B 25/04 - Agitating, stirring, or scraping devices
• F26B 9/08 - Machines or apparatus for drying solid materials or objects at rest or with only local agitationDomestic airing cupboards in stationary drums or chambers including agitating devices
• F26B 19/00 - Machines or apparatus for drying solid materials or objects not covered by groups
• C02F 11/16 - Treatment of sludgeDevices therefor by de-watering, drying or thickening using drying or composting beds
• B01F 7/00 - Mixers with rotary stirring devices in fixed receptacles; Kneaders
• B01F 7/04 - Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles or arms
• F26B 3/28 - Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun