Patent ID: 8087353

Claim:
A machine ( 4 ) having an improved drainage grid ( 1 ) for compacting humid waste ( 2 ), of a type comprising at least an Archimedes screw ( 7 ) which is rotatable about a longitudinal axis (X) thereof, the drainage grid ( 1 ) comprising a perforated structure ( 16 ) having a lower portion defining an arched portion ( 17 ), the perforated structure ( 16 ) having opposing ends which define an opening extending between the opposing ends, the opening being located above the lower portion, the arched portion ( 17 ) being predisposed to adhere against a helix ( 10 ) of the Archimedes screw ( 7 ) and which enables liquid substances to pass, wherein the drainage grid ( 1 ) comprises means for regulating ( 21 ), associated with the perforated structure ( 16 ), which are elastically deformable in such a way as to determine a continuous adhesion of the arched portion ( 17 ) to the helix ( 10 ) of the Archimedes screw ( 7 ) and to enable a distancing of the arched portion ( 17 ) from the helix ( 10 ) following application of at least a force directed from the helix ( 10 ) towards the arched portion ( 17 ), wherein the means for regulating ( 21 ) are elastically pretensioned in order to maintain the arched portion ( 17 ) in contact with the helix ( 10 ) of the Archimedes screw ( 7 ), wherein the means for regulating ( 21 ) are associated to a support portion ( 18 ) at each end of the perforated structure ( 16 ), and the means for regulating ( 21 ) are located above a horizontal plane extending through the longitudinal axis (X).