US 12,076,726 B2
Rotor for a waste grinding apparatus and waste grinding apparatus incorporating said rotor
Simone Ghirardi, Rome (IT)
Assigned to WPT S.R.L., Collegno (IT)
Appl. No. 17/609,599
Filed by WPT S.R.L., Collegno (IT)
PCT Filed May 15, 2020, PCT No. PCT/IB2020/054623
§ 371(c)(1), (2) Date Nov. 8, 2021,
PCT Pub. No. WO2020/234722, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 102019000006950 (IT), filed on May 17, 2019.
Prior Publication US 2022/0203373 A1, Jun. 30, 2022
Int. Cl. B02C 13/28 (2006.01); B02C 13/30 (2006.01); B02C 18/00 (2006.01); B02C 18/12 (2006.01); B02C 18/14 (2006.01); B02C 18/18 (2006.01); B02C 25/00 (2006.01)
CPC B02C 13/2804 (2013.01) [B02C 13/30 (2013.01); B02C 25/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A waste grinding apparatus (101) for processing a waste material, comprising:
a rotor (11) having a central body (13) defining at least one radial vane (15a, 15b), provided, at its end (17a, 17b) distal relative to a vertical rotation axis (“S”) of the rotor (11), with a hammerhead (19) in which a first, knocker impact surface (21) adapted to operate when the rotor (11) rotates in a first, clockwise or counter-clockwise direction, and a second, wedge-shaped impact surface (23) adapted to operate when the rotor (11) rotates in a second direction opposite to the first direction, are defined; and
a grinding cell (101a) in which the rotor (11) is housed;
wherein the first, knocker impact surface (21) extends on a single plane (21a) parallel to the vertical rotation axis of the rotor or substantially perpendicular to an angular direction of rotation of the rotor;
wherein the rotor (11) is driven by an electric motor (25) controlled by an electronic unit (27) programmed for causing the rotor (11) to carry out a first working cycle, in which the rotor (11) rotates in the first direction, either clockwise or counter-clockwise, and a second working cycle, in which the rotor (11) rotates in the second direction opposite to the first direction; and
wherein the first working cycle raises a temperature of the waste material and is carried out with the knocker impact surface (21) of the hammerhead (19) of the at least one vane (15a, 15b) of the rotor (11), and the second working cycle cuts and shreds the waste material and is carried out with the wedge-shaped surface (23) of the hammerhead (19).