Computer-Aided Design — Waste-Sorting Machine
Overview
Designed a compact waste-sorting machine in CAD that separates shredded mixed waste into three streams — brittle/glass, ferrous metal, and the remainder — compressing two separation processes into a single, space-saving machine well suited to limited land area.
Key points
- Combined two physical properties for separation: mechanical particle size (a cylindrical sieve) and magnetism (a magnetic drum).
- Designed a Trommel screen at an optimized 6° incline (balancing sorting efficiency vs. throughput) with an internal helical insert and 1,764 sieve holes.
- 3D-modeled every subassembly — trommel sieve, ball bearings, frame, conveyor belt, friction drive wheels, and the magnetic drum.
- Replaced the conventional overhead magnetic belt with a drum placed right after the trommel to shrink the footprint.
- Deliverables: a full assembled model (trimetric / backward views) and engineering drawings (front, top, side, section, auxiliary).
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