Comminuting Roller Layout for Uneven Feed and Uniform Shredding
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Solution Overview
Problem
Existing shredding devices struggle to effectively shred cohesive, interlocked, and elongated materials due to inadequate straightening and uniformity in the shredding process, particularly when material is unevenly fed.
Innovation Solution
The shredding device is designed with uneven material feeding and varying distances between adjacent shredding tools in rows, along with different tool densities in specific areas, to ensure uniform distribution and improved shredding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If material is fed uniformly along the roller length, then the feeding process is simple, but shredding uniformity deteriorates when material distribution is uneven
Solution Approach 1:
The patent applies local quality by varying the spacing between shredding tools along the longitudinal direction of the roller. Specifically, the distance between adjacent shredding tools is smaller at the first end (where material is fed) and larger at the second end. This non-uniform spacing compensates for the uneven material distribution, ensuring that shredding capacity matches material input at each location, thereby maintaining shredding uniformity while keeping the feeding process simple.
2Device complexity
If shredding tools are arranged in parallel rows to the roller axis, then the structure is simple, but material straightening and separation effectiveness deteriorates
Solution Approach 1:
The patent applies asymmetry by arranging the rows of shredding tools at an angle relative to the longitudinal direction of the roller, rather than parallel to it. This inclined arrangement creates an asymmetric pattern that effectively straightens and separates cohesive, interlocked, and elongated materials as they pass through the shredding zone, significantly improving material separation effectiveness while maintaining reasonable structural complexity.
3Device complexity
If equal distances are provided between all adjacent shredding tools, then the tool arrangement is uniform and simple, but shredding performance deteriorates for unevenly distributed material
Solution Approach 1:
The patent applies local quality by implementing non-uniform spacing between adjacent shredding tools along the longitudinal direction. The distance between tools is smaller at the first end where material is fed and larger at the second end. This localized variation in spacing optimizes shredding efficiency by matching tool density to material distribution, ensuring that areas with more material input have higher shredding capacity.
Data Source
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AI summary
The invention relates to a comminuting apparatus (1) for comminuting material to be comminuted, in particular for use in the field of recycling and waste processing, said apparatus comprising: at least one comminuting roller (2) that can be rotated about an axis of rotation (4) and has a main roller body (3); and a feeding means (5), that is designed in particular as a feed hopper, for feeding material to be comminuted to the comminuting roller (2), wherein comminuting tools (8), in particular teeth, are provided on the main roller body (3), said tools being spaced apart from one another and positioned in a plurality of rows (7) that extend in the longitudinal direction (L) of the main roller body (3) and run obliquely with respect to the longitudinal direction (L) on the main roller body (3). According to the invention: the feeding means (5) is designed in such a way that a larger quantity of material to be comminuted accrues at the first end (10) of the main roller body (3) than at the second end (11) of the main roller body (3), wherein directly adjacent comminuting tools (8) of a row (7) are positioned in such a way that the comminuting tool (8) facing the second end (11) is set back in the direction of rotation relative to the comminuting tool (8) facing the first end (10), and/or wherein different distances (12) are provided between directly adjacent comminuting tools (8) of a row (7).