Coffee Bean Sorter Orange Team Outline 2. Customer 3. Product 4. - - PowerPoint PPT Presentation

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Coffee Bean Sorter Orange Team Outline 2. Customer 3. Product 4. - - PowerPoint PPT Presentation

Sep 30, 2023 571 likes •855 views

Coffee Bean Sorter Orange Team Outline 2. Customer 3. Product 4. Distribution 4. Distribution Motivation Gourmet size requirement Limited processing technology ~17/64 Customer As Green as it Gets Works with a farming cooperative

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SLIDE 1

Coffee Bean Sorter

Orange Team

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SLIDE 2

Outline

  • 2. Customer
  • 3. Product
  • 4. Distribution
  • 4. Distribution
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SLIDE 3

Motivation

  • Gourmet size

requirement

  • Limited processing

technology

~17/64”

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SLIDE 4

Customer

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

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SLIDE 5

Global Market

20-25 million small-scale coffee farmers worldwide

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SLIDE 6

Screen Sorting Drum Sorting

Sorting Methods

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SLIDE 7

Our Solution

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SLIDE 8

Hopper Design

Challenge:

– Accommodate the average farmer – Small or large batch loading

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SLIDE 9

Hopper Design

Challenge:

– Accommodate the average farmer – Small or large batch loading

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SLIDE 10

Bean Paths in Drum

Undersized Optimal Size Oversized

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SLIDE 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
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SLIDE 12

Collection Bags

Challenge:

– Quick loading and unloading – Visible throughput

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SLIDE 13

Frame

Challenge:

– Easily manufactured – No sharp corners

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SLIDE 14

Frame

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SLIDE 15

Benefit Analysis

  • 10 times faster
  • Annual revenue increase of 10%
  • Net Present Value of $800
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SLIDE 16

Cost Analysis

  • $205 material costs
  • Fabrication costs

– Estimated 20 hours of labor – $36 in labor

  • Payoff in 2 months of use
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SLIDE 17

Distribution Scheme

  • Building plans
  • Field test prototype
  • Worldwide dissemination
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SLIDE 18

Questions?

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SLIDE 19

Bean Dynamics and Diameter

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

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SLIDE 20

Drum diameter Drum angle Drum length Rotation rate Hopper feed rate Improving Accuracy Improving Rate Design parameter

Results of Testing

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SLIDE 21

Optimization of Drum Dimensions and Rotation Rate

Drum angle Rotation rate rot/sec Diameter Length Total rate lbs/hr Defect occurrence rate beans/lb 2 0.5 big short 225 327 2 0.33 big short 260 130 2 0.33 big short 235 96 2 0.25 big short 230 66 2 0.25 small short 240 47 2 0.25 small long 230 20

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SLIDE 22

Black Pergamino Genetically Deformed Rocks or Twigs Cherry

Eye Eye

Sorting Each Bean Type

Size Size Size

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SLIDE 23

Cost Analysis

Material Cost

25 meters Angle Iron

$25

(2) 4’ x 8’ Sheet Metal

$70

(1) 4’ x 8’ Screens

$35

18 tabular feet of 3/4” plywood

$45

Fasteners

$30

Total

$205

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SLIDE 24

Customer

As Green As It Gets

  • Works with a farming

cooperative in Guatemala

MayaPedal

  • Builds human powered

agricultural tools

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SLIDE 25
  • Builds human powered

agricultural tools

Customer

As Green As It Gets MayaPedal

  • Works with a farming

cooperative in Guatemala

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SLIDE 26

Customer

  • As Green As It Gets

– Works with a farming cooperative in Guatemala

  • MayaPedal

– Builds human powered agricultural tools

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SLIDE 27

Hopper Design

  • Challenge:

– Accommodate the average farmer – Small or large batch loading