Team 7 - Project 99.07

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Team 7 - Project 99.07
Experimental Silo Packer

• Team Members
• J. M. Tate, J. Acheson, P. Sullivan, and A.
  Abumohor
• Advisor Dr. J. Glancey Sponsor Dr.
  Limin Kung

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Presentation Overview

• Presenter Topic
• J. Acheson Intro, Customers to Metrics
• J. Michael. Tate Concept Generation
• P. Sullivan Concept Selection
• A. Abumohor Scheduling, Budget, and Conclusion

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Silo Background
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Problem
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Summary Chart

• Mission The purpose of our team is to design
  and build a means to quickly and reproducibly
  load a test silo without requiring extensive
  manpower.
• Approach We will use the Total Quality Design
  Process, through the SpreadSheet Design Process
  on Microsoft Excel.

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Customers

• Academic
• Dr. Limin Kung
• Dr. Martin Stokes
• Dr. Joseph Harrison

• Industrial
• Mr. Chris Rhoden
• Ms. Carol Myers

• Agricultural
• Mr. Richard Morris

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Wants 1-5

• 1) Reproduce Desired Results
• 2) Not Physically Demanding
• 3) Fast Operation
• 4) Simple Operation for User
• 5) Low Cost

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Wants 6-10

• 6) Easy to Clean
• 7) Easy to Repair
• 8) Easily Transportable
• 9) Variable Silo Size
• 10) Easy to Store

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Constraints

• The apparatus should be able to
• 1) Pass though a doorway
• 2) Be moved by 2 people
• 3) Pack faster than Kungs methods
• 4) Give a proper sink distance
• 5) Be built for under 500

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System Benchmarking

• Stokes Pneumatic Loader
• Trash Compactors
• Shotshell Loaders
• Pharmaceutical Capsule Filling Machines
• Dr. Kungs Packing Methods
• Main Competitor
• Stokes Pneumatic Loader

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Functional Benchmarking

• Functions
• Compacting Devices
• Material Transport
• Container Transport
• Pressure and Load Sensors
• User-Interface Controllers

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Compacting Devices

• High-Velocity Blowing Compactor
• Distributed Weight Packer
• Rolling Compactor
• Hydraulic Power Press
• Extrusion Screw
• Best Practice Pneumatic Piston

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Material Transport

• Bagging Lawnmower
• Vacuum Cleaner
• Two-Stage Silage Blower
• Multiple Ram Silage Mover
• Screw Feeder
• Best Practice Screw Feeder

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Container Transport

• Case Conveyor
• Cola Bottling Line
• Cigarette Packing Apparatus
• Best Practice Conveyor Belt

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Pressure and Load Sensors

• Pressure Transducer
• Load Cell
• Piezoelectric Pressure Sensors
• Best Practice
• Piezoelectric Pressure Sensors

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User-Interface Controllers

• Computer Keyboard
• Foot Pedal
• Video Game Controller
• Push Button
• Best Practice Foot Pedal

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Metrics 1 to 5
Metric Want Number if Users Simple
Operation Pressure per Layer Change in
Pressure Reproduce Desired Results Per
Layer Operating Force Not Demanding Total
Cost Low Cost
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Metrics 6 to 10
Metric Want Total Time to Fill Fast
Operation Number of Users Simple
Operation Storage Volume Easy to Store or
Transport Number of Silo Sizes Variable Silo
Sizes Weight Easy to Transport
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Concept Generation
Extrusion Family
Straight Extruder
Tapered Extruder
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Concept Generation
Horizontal Piston Family
Gravity Fed Piston
Hand Fed Piston
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Concept Generation
Vertical Piston Family
Piston with Vibrating Chute
Screw Fed Piston
Crank Slider
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Concept Generation
Other Design Family
Weight Press
Centrifuge
Blower
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Concept Evaluation

• Experiments
• Types
• Effect of Lips and Sudden Changes in Diameter
• Effect of Plunger Size on Packing
• Effect of Piston Orientation
• Vertical and Horizontal
• Silage Behavior on Chutes and in Ramps

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Concept Evaluation

• Low Rated Concepts
• Extruder Family
• Cost metric too high
• Lack of experimental data
• Horizontal Piston Family
• Change in Pressure Per Layer metric too high
• Time to Fill metric is too high
• Jamming problems inherent in the design

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Concept Evaluation

• Low Rated Concepts
• Other Family
• Pressure target is not met
• Dimensions outside of constraints
• Weight outside of constraints

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Concept Evaluation

• Vertical Piston Family
• High Scoring Metrics
• Pressure per layer
• Change in Pressure per Layer
• Time to Fill

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Vertical Piston Family
Screw Fed Piston
Evaluation User Actions is low Time to Fill is
low Cost of Screw Feeder is too high
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Vertical Piston Family
Piston with Vibrating Chute
Evaluation Clogging problems increase time to
fill Cost metric is too high
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Vertical Piston Family
Crank Slider
Evaluation Time to Fill is good. Low Cost User
Actions is high.
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Concept Development

• Motor 1/3 Hp. AC
• 6 rpm
• Dyad Diameter 11 in.
• Frame of 1 in. steel square tubing
• Carriage on Linear Bearings
• Linear Cam with Follower

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Working Model
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Schedule
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Schedule
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Budget

• PART PRICE
• FRAME 129
• MOTOR 120
• PISTON 15
• LINKAGE 25
• SPRING 8
• MOUNTING MECHANISM 73
• BEARINGS 48
• BASE 33
• TOTAL 451