US 12,390,814 B2
Dual-shaft shredder with a horizontal maintenance concept
Torsten Burhorst, Essen/Oldb. (DE); and Stephen Tapken, Essen/Oldb. (DE)
Assigned to VOGELSANG GMBH & CO KG, Essen (DE)
Appl. No. 18/007,518
Filed by VOGELSANG GMBH & CO. KG, Essen (DE)
PCT Filed Jun. 2, 2021, PCT No. PCT/EP2021/064758
§ 371(c)(1), (2) Date Dec. 1, 2022,
PCT Pub. No. WO2021/245124, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 20 2020 103 188.0 (DE), filed on Jun. 3, 2020.
Prior Publication US 2023/0234070 A1, Jul. 27, 2023
Int. Cl. B02C 18/14 (2006.01); B02C 18/16 (2006.01); B02C 18/24 (2006.01)
CPC B02C 18/142 (2013.01) [B02C 18/24 (2013.01); B02C 2018/162 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A two-shaft shredder for shredding solids or solids in liquids, comprising:
a shredder housing defining an internal shredding chamber;
an inlet opening in the shredder housing for supplying solids into the shredding chamber;
an outlet opening in the shredder housing substantially opposite the inlet opening for discharging shredded solids from the shredding chamber;
a first cutter disc unit comprising a first cutter disc block having a plurality of first cutter discs arranged on a first hub body such that there is a space between each two adjacent first cutter discs;
a second cutter disc unit comprising a second cutter disc block having a plurality of second cutter discs arranged on a second hub body such that there is a space between each two adjacent second cutter discs;
wherein the first and second cutter disc blocks are axially offset from each other with their axes of rotation such that at least some of the first cutter discs each engage a space between two adjacent second cutter discs and some of the second cutter discs each engage a space between two adjacent first cutter discs;
wherein the first cutter disc unit has at a first axial end a first bearing unit with a first bearing housing, and at a second axial end a second bearing unit with a second bearing housing, in which the first cutter disc block is mounted rotatably about a first axis of rotation;
wherein the second cutter disc unit comprises at a first axial end a third bearing unit with a third bearing housing, and at a second axial end a fourth bearing unit with a fourth bearing housing, in which the second cutter disc block is rotatably mounted about a second axis of rotation; and
wherein the shredder housing has a first maintenance hatch cover which can assume a release position and a closed position and, in the release position, permits removal of the first cutter disc unit together with the first and second bearing units and, in the closed position, prevents removal of the first cutter disc unit together with the first and second bearing units.