A centrifugal machine for granular solid materials, comprising:
- a centrifuging mechanism;
- and
- a hopper configured to receive granular solid materials adjacent one end of the centrifugal machine, the one end lacking any support structure so as to provide free access from the hopper and into the centrifuging mechanism;
- the centrifuging mechanism comprising:
- a rotary helical device having a first device end, a second device end, a device longitudinal axis, and a first central axle having a first end and a second end, the device longitudinal axis extending between the first device end and the second device end, the second device end being opposite the first device end, and the first central axle extending along the device longitudinal axis from a point adjacent the first device end to a point beyond the second device end;
- and
- a perforated rotary piece having a first piece end defining, in part, the one end of the centrifugal machine, a second piece end, a piece longitudinal axis, and a second central axle having a first end and a second end, the first end of the second central axle being opposite the second end of the first central axle, the piece longitudinal axis being aligned with the device longitudinal axis and extending between the first piece end and the second piece end, the second piece end being opposite the first piece end, the second piece end being adjacent the second device end, the second central axle extending along the piece longitudinal axis from a fixed connection point on the perforated rotary piece intermediate the first piece end and the second piece end to a point beyond the second piece end, and the second central axle being positioned internally and concentric relative to the first central axle;
- a solid outlet duct positioned adjacent the second piece end of the perforated rotary piece and the second device end of the rotary helical device, the solid outlet duct providing an outlet for centrifuged granular solid materials to exit the centrifugal machine;
- a rotary conical chamber arranged between the hopper and the perforated rotary piece, the rotary conical chamber being configured for receiving the granular solid materials coming from the hopper and delivering them to the perforated rotary piece, the perforated rotary piece being provided with a solid conducting rotor that is supported by the first central axle via a bearing fixed to the first central axle;
- and
- a driving mechanism remotely located relative to the one end of the centrifugal machine and independently connected to:
- (1) the rotary helical device via the first central axle and adjacent the point beyond the second device end to which the first central axle extends, and (2) the perforated rotary piece via the second central axle and adjacent the point beyond the second piece end to which the second central axle extends, the independent connectivity causing the driving mechanism to independently rotate the first and the second central axles, and thus the rotary helical device and the perforated rotary piece, respectively, relative to one other,
- wherein:
- the perforated rotary piece is configured to remove, via centrifugal force, free liquids adhered to a surface of the granular solid materials;
- the driving mechanism is configured to provide:
- specific adjustment of angular velocity for the rotary helical device around its central axis through the first central axle;
- and
- specific adjustment of angular velocity for the perforated rotary piece around its central axis through the second central axle;
- the second central axle of the perforated rotary piece, being positioned internally and concentric relative to the first central axle, causes the first central axle to, in part, support the perforated rotary piece;
- the first piece end of the perforated rotary piece is fixed to the first end of the second central axle;
- the second piece end of the perforated rotary piece is supported by second end of the first central axle, via the solid conducting rotor and adjacent a location intermediate and spaced apart from both the first and second ends of the second central axle;
- and
- the hopper is positioned adjacent to the first piece end of the perforated rotary piece of the centrifuging mechanism, corresponding with the one end of the centrifugal machine.