| 摘要 |
<p>Apparatus for treatment of the sludge from sewage purification plants, of circular shape, in which the motor unit for driving the scraping system is fastened to a support arranged in the middle of the apparatus, which is covered with a cupola-shaped structure 3, characterised in that this structure comprises in its middle a circular orifice 6 whose diameter is greater than that of the central drum 2, this orifice being shut by a sealing device consisting of two liquid-filled, sealed circular chutes 11, 12 joined by a crown ring 14 in the shape of an inverted U, each arm of which is immersed in each chute respectively, this crown ring being fastened to the rotating cage 5 driving the scraping device 4 in rotation. <IMAGE></p> |
