Machine having an improved draining grid for compacting humid waste
AssigneeWAM S.p.A.
InventorMassimo Passerini
Life of this patent
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Abstract
The machine (4) having an improved drainage grid (1) for compacting humid waste (2) comprises at least an Archimedes screw (7) which rotates internally of a containing structure (11) in which a support structure (13) is afforded for the grid (1). The drainage grid (1) comprises a perforated structure (16) shaped and connected in the fixed structure (13) in such a way as to maintain the perforated structure (16) continuously in contact with the helix (10) of the Archimedes screw (7).
Claims9
1). 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) which exhibits at least an arched portion (17) predisposed to adhere against a helix (10) of the Archimedes screw (7) and which enables liquid substances to pass, wherein it comprises means for regulating (21), operatively associated with the perforated structure (16) and predisposed to maintain the arched portion (17) in continuous contact with the helix (10) of the Archimedes screw (7).
2). The machine of claim 1, wherein the means for regulating (21) 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).
3). The machine of claim 2, 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).
4). The machine of claim 1, wherein the means for regulating (21) are associated to a support portion (18) of the grid (1) which is connected to the arched portion (17).
5). The machine of claim 4, wherein the support portion (18) comprises at least two attachment elements (19), engaged at opposite ends (17b) of the arched portion (17), to which attachment elements (19) the means for regulating (21) are joined to make a single piece, the means for regulating (21) exhibiting, for each of the attachment elements (19), a lug (21a);
- each lug (21a) develops curvedly and exhibits a convex surface (21b) which faces towards the convex surface (21b) of the opposite lug (21a), and a concave surface (21c) facing in an opposite direction thereto.
6). The machine of claim 5, wherein each lug (21a) subdivides the respective attachment element (19) into an intermediate segment (19a), interposed between the arched portion (17) and the lug (21a) itself, and an end segment (19b) which develops from the lug (21a) towards an opposite end with respect to the arched portion (17).
7). The machine of claim 1, wherein it comprises:
- a fixed support structure (13) associable to a containing structure (11) of the Archimedes screw (7);
- means for engaging (20) provided with constraints (22) arranged on opposite sides with respect to the arched portion (17) and at least partially elastically deformable, for connecting the grid (1) to the fixed structure (13) in such a way that the grid (1) remains in a substantially suspended position internally of the fixed structure (13).
8). The machine of claim 7, wherein each constraint (22) comprises:
- at least an elastically deformable bushing (22a), which is inserted in a through-hole (23), afforded in the grid (1) wall, and in an engagement opening (24) afforded in the fixed support structure (13) coaxially to the through hole (23);
- a coupling element (22b), inserted in the bushing (22a), which engages in the fixed support structure (13).
9). The machine of claim 1, characterised in that the grid (1) is entirely made of a plastic material.