Scraper bridge useful in settling tank for treating wastewater containing sludge, comprises beam that is intended to be mounted and rotates on central column of settling tank, base blade for scrapping the tank, and guides fixed to beam

摘要

The scraper bridge (2) comprises a beam (3) that is intended to be mounted and rotates on a central column (4) of a settling tank (1), a base blade (5) for scrapping the settling tank, and guides fixed to the beam. The base blade is connected to the beam by the guide. The base blade is movable along the guides to occupy a first working position in which the blade is adapted to scrape the settling tank and a second position in which the blade is raised above the beam, or slides along the guides by bearings. The scraper bridge (2) comprises a beam (3) that is intended to be mounted and rotates on a central column (4) of a settling tank (1), a base blade (5) for scrapping the settling tank, and guides fixed to the beam. The base blade is connected to the beam by the guide. The base blade is movable along the guides to occupy a first working position in which the blade is adapted to scrape the settling tank and a second position in which the blade is raised above the beam, or slides along the guides by bearings. The guides have a curve to guide the base blade so that the blade, in high position, is parallel to the beam and the blade, in the working position, is inclined with respect to the beam. The guides are parallel to each other and are present in S-shape in a plane parallel or perpendicular to a longitudinal direction of the beam. A lower end of the guides is attached to a hanger mounted on the beam. The base blade is fixed on the first bearing with a cylindrical opening and on the second bearing with an oblong orifice.