Importance

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Abstract

The invention relates to a screw press (1) for dewatering sludge, whereas the screw press (1) features at least one inlet opening (2) for the sludge to be dewatered, whereas the screw press (1) features a pressing assembly, with the assistance of which the sludge is able to undergo a pressing process after passing the inlet opening (2), with which the liquid (9) present in the sludge is at least partially driven out of the sludge, whereas a pressing assembly comprises a worm shaft (4) that is movable in a rotational movement with the assistance of a drive (17) and several screen elements (5) surrounding the worm shaft (4), at least in sections, during the operation of the screw press (1), whereas the screen elements (5) feature a screen surface (6) turned towards the worm shaft (4) and a support structure (7) securing the stability of the screen elements (5), whereas the pressing assembly features at least one outlet opening (8) for the liquid (9) driven out of the sludge with the assistance of the worm shaft (4), and whereas the screw press (1) features at least one discharge opening (10) for the sludge (11) that is at least partially dewatered with the assistance of the pressing assembly. In accordance with the invention, it is proposed that the screw press (1) features at least one holding unit (12), with the assistance of which at least the support structure (7) of at least one screen element (5) can be fixed in a maintenance position, in which the screen surface (6) of the corresponding screen element (5) is spaced apart from the worm shaft (4).

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First Claim