Team Barley Busters

1. Team Barley Busters Team Members: Mike Hayes, ME Jeremy Weber, ME Arie Blom, ME Adam Burk, BAE Jacob Gray, BAE Advisor: Dr. Tom Hess

2. Opportunity Statement Our client desires an apparatus to test hull adherence of various strains of barely and receive quantitative results. The testing device must be self-cleaning, process ten samples per hour, catch all test material, minimize noise, and provide repeatable results. The device must also conform to all OSHA and company standards for safety.

3. Original Apparatus

4. Problems Encountered with Original Apparatus • Noise from compressed air/ inconvenient • Not self-cleaning • Poorly repeatable results • Slow speed to achieve desired hull removal

5. Specifications • Noise • < 50 dB • Self Cleaning • Minimal cleaning needed after testing • Removal of Hull • Within 10% accuracy of 90% of tests • Collection of Sample • 99% recovery of all material tested • Size • < 50 lbs and 8 cubic feet • Speed • Must be able to run at least 10 samples 50-250 grams per hour • Separation • >95% of removed hull still in tact after testing • Safety • Follow all safety standards. Enclose moving parts.

6. Preliminary Designs Considered Cement mixer style -rotating drums Alternative Design 1: Cement Mixer Solid drum to catch hull and filter down Abrasive inner drum with mixing fins Solid barley trap

7. Alternative Design 2: Coffee Grinder Preliminary Designs (cont.) To hull trap and vacuum Abrasive disk

8. Head ThresherInitial Considerations • Western Wheat Quality Laboratory, Pullman, Washington • Used for cleaning wheat • Uses nylon impellers and woven cloth • Sold by Precision Machine Co., Inc. Lincoln, NE

9. Testing Procedure • Set timer to 15 or 30 seconds • Turn on full power while mechanism is closed by users hand and a gate • When time ends open gate and remove hand slowly • When most of the hull is removed with aspirator, remove remaining barely and strain using a 300 цm sieve.

10. Baseline Testing and Rating Initial Testing • Rating: • Noise • Self Cleaning • Hull Removal • Collection of end results • Size of apparatus • Time it took to run a test • Ability to separate kernel from hull • Safety Standard Deviation from testing at WSU:0.14925g

11. Hull Being Removed (Test Results)

12. Decision Matrix

13. Final Design Solution Modifications Solid Model

14. Funnel and Stopper (Front View) Funnel Barley Stopper Servo Motors Servo Stands

15. Funnel and Servos (Top View) Servo Attachment Servo Attachment

16. Nozzle Attachment Servo Motor New Nozzle Barley Stopper

17. Air Flow Analysis Nozzle Attachment • Problems before nozzle: • Full kernels collected in with hull sample • Not enough circulation in bottom of cylinder

18. Air Flow Analysis Without Insert With Insert Slower Velocity than without insert

19. Air Flow Analysis Without Insert With Insert Where Barley would be ‘stuck’

20. Sieve and Dust Bag Sieve Dust Bag

21. Testing with New Sieve

22. Electrical Components Electronics Case Input and Display

23. Electronic Configuration

24. Cost Estimate Predicted Costs Actual Costs

25. Final Test Results

26. DFMEA

27. Questions?Recommendations?