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Coffee Bean Sorter

Coffee Bean Sorter. Orange Team. Outline. Motivation Customer Product Distribution. Motivation. Gourmet size requirement Limited processing technology. ~17/64”. Customer. Maya Pedal Builds human-powered agricultural tools. As Green as it Gets

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Coffee Bean Sorter

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  1. Coffee Bean Sorter Orange Team

  2. Outline • Motivation • Customer • Product • Distribution

  3. Motivation • Gourmet size requirement • Limited processing technology ~17/64”

  4. Customer Maya Pedal Builds human-powered agricultural tools As Green as it Gets Works with a farming cooperative in Guatemala

  5. Global Market 20-25 million small-scalecoffee farmers worldwide

  6. Sorting Methods Screen Sorting DrumSorting

  7. Our Solution

  8. Hopper Design Challenge: • Accommodate the average farmer • Small or large batch loading

  9. Hopper Design Challenge: Accommodate the average farmer Small or large batch loading

  10. Oversized Undersized Optimal Size Bean Paths in Drum

  11. Drums Challenge: Accuracy • 15 undersized beans per pound • Dependent on: • Feed rate: 230 lb/hour • Turning rate : ¼ turn per sec • Drum Length: 48 in • Drum angle: 1 degree

  12. Collection Bags Challenge: • Quick loading and unloading • Visible throughput

  13. Frame Challenge: • Easily manufactured • No sharp corners

  14. Frame

  15. 10 times faster Annual revenue increase of 10% Net Present Value of $800 Benefit Analysis

  16. $205 material costs Fabrication costs Estimated 20 hours of labor $36 in labor Payoff in 2 months of use Cost Analysis

  17. Distribution Scheme • Building plans • Field test prototype • Worldwide dissemination

  18. Questions?

  19. Bean Dynamics and Diameter Beans mix rather than bounce Tumbling helps beans mix between layers Better for sorting Beans bounce and fly But with too much tumbling, the beans do not contact the drum surface enough to sort Worse for sorting

  20. Results of Testing Improving Accuracy Improving Rate Design parameter Drum diameter Drum angle Drum length Rotation rate Hopper feed rate

  21. Optimization of Drum Dimensions and Rotation Rate

  22. Sorting Each Bean Type Genetically Deformed Pergamino Rocks or Twigs Cherry Black Size Size Size Eye Eye

  23. Cost Analysis

  24. Customer MayaPedal • Builds human powered agricultural tools As Green As It Gets Works with a farming cooperative in Guatemala

  25. Customer As Green As It Gets MayaPedal • Builds human powered agricultural tools Works with a farming cooperative in Guatemala

  26. Customer • As Green As It Gets • Works with a farming cooperative in Guatemala • MayaPedal • Builds human powered agricultural tools

  27. Hopper Design Challenge: Accommodate the average farmer Small or large batch loading

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