Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
An apparatus for compressing and dewatering moist cellulose-containing and/or other fibrous materials in pieces, e.g. waste paper, wood, grass, straw and other harvest products, cellulose, peat, bark and the like, which apparatus includes an input portion (3) for the material, which is to be compressed and dewatered, a dewatering portion, and a discharge opening for the compressed and dewatered product, a rotary screw (11), and driving means (8, 9), which make the screw rotate, said screw being eccentrically disposed in relation to the rotation axis of the screw and in relation to the mean screw line of the core, respectively, characterised in that at least one first pressure cone (13) is provided for a forceful compression of the material, that the wall of said pressure cone is impermeable at least in a zone thereof, that a jacket portion (12) having drainage holes (19) is disposed upstream of said first pressure cone, and that said screw extends from said input portion, through said jarket portion having drainage holes, into said zone of the pressure cone having an impermeable wall.
Claim 2
Independent Claim
178 words
An apparatus for compressing and dewatering moist cellulose-containing and/or other fibrous materials in pieces, e.g. waste paper, wood, grass, straw and other harvest products, cellulose, peat, bark and the like, which apparatus includes an input portion (3) for the material, which is to be compressed and dewatered, a dewatering portion, and a discharge opening for the compressed and dewatered product, a rotary screw (11), and driving means (8, 9), which make the screw rotate, said screw being eccentrically disposed in relation to the rotation axis of the screw and in relation to the mean screw line of the core, respectively, characterised in that at least one first pressure cone (13) is provided for a forceful compression of the material, that the wall of said pressure cone is impermeable at least in a zone thereof, that a jacket portion (12) having drainage holes (19) is disposed upstream of said first pressure cone, and that said screw extends from said input portion, through said jarket portion having drainage holes, into said zone of the pressure cone having an impermeable wall.
Claim 3
Dependent Claim
20 words
An apparatus according to claim 1, characterised in that the screw in the region of said pressure cone is conical.
Claim 4
Dependent Claim
23 words
An apparatus according to claim 2, characterised in that the thread of the screw in the region of the pressure cone is waved.
Claim 5
Independent Claim
27 words
An apparatus according to any of claims 1-3, characterised in that the screw core is provided with an extension in the form of an eccentric pin (45).
Claim 6
Dependent Claim
58 words
An apparatus to claim 3, characterised in that the thread has a substantially larger pitch in the zone of said drainage holes or in a zone adjacent thereto in order to tear apart the compressed material to facilitate the flow of water from the central portions of the compressed material rearwards towards the jacket and the drainage holes.
Claim 7
Dependent Claim
20 words
An apparatus according to claim 4, characterised in that the eccentric pin (45) extends into a second pressure cone (14).