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Apple Sanitation System Sponsored by: ISU Horticulture Research Station Michael Bell Zach Torres Josh Sampson Youssef Al-Yakoob ABE 415, Agricultural and Biosystems Engineering Design I

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  • Apple Sanitation SystemSponsored by: ISU Horticulture Research Station

    Michael BellZach Torres

    Josh SampsonYoussef Al-Yakoob

    ABE 415, Agricultural and Biosystems Engineering Design I

  • Client Contact

    Iowa State Horticulture Research Station

    Nick Howell, Farm Superintendent (515) 291-1559 [email protected]

    Brandon Carpenter, Ag. Specialist III (515) 232-4786 [email protected]

  • Current State

    Small Scale GrowersLarge Scale Orchard Production

  • Apple Sanitation System Overview

    Stage 1 Initial Conveyor First cull remover

    Chain belt

    Stage 2 Wash Bay 1

  • Apple Sanitation System Overview

    Stage 3 Wash Bay 2 Wax & Polisher

    Stage 4 Apple Sorter

    Five sizes Cull, small, medium,

    large, and extra-large

  • Project Scope

    Develop a system to remove superficial diseases from apples, integrate Good Agriculture Practices (GAP) safety into the current system, and automate control and filtration system

    Secondary focus is to minimize water usage and capability of using the system for other produce.

  • Problem Brief

    Sooty Blotch and Flyspeck (SBFS)

    Superficial disease on apples If not removed, apple grade is

    lowerIn order to rid this problem, the apples are required to be soaked ina chlorine solution.

  • GAP Safety and GMP Safety

    USDA/FDA regulations are becoming more stringent (may soon become law)

    GMP, Good Manufacturing Practices, includes sanitizing equipment, water cleanliness, and worker hygiene

  • Current Options

    Lakewood Process Machinery Lawrence, MI

    JMS Industries Coimbatore, India

  • Main Objectives

    Ensure that new design can be integrated into current setup with minimal changes

    Provide electronic control of new system

    Maintain a design that is scalable and cost effective for growers of all sizes

  • Criteria & ConstraintsCriteria

    Should maintain or increase efficiency Should integrate electronic controls for entire system Minimize space occupied and cost to build Adapts to current system and have a diversified capability for other


    Must have electronic on/off switch Must meet GAP & GMP Standards Must be made of stainless steel Must have a water flush system

  • Conveyor System (manual filter) Chain Link conveyor with

    paddles Gravity fed into/out tank 22 Bushel/hour (max)

    estimated Manual filter system (push

    button) Reservoir for exchanging


  • Conveyor SystemManual water filter system

    Not fully automatic System must meet or exceed GAP Standards

    Filter may require daily cleaning

    Cost effective Simple controls (push button) No downtime (versus no filter) Recycles water Electronic control for majority of


    Advantages: Disadvantages:

  • Advantages: Pre-made tanks available Easily change throughput Fully submerges apples Compact (4x2 footprint)

    Conveyor SystemConveyors

    Challenges: Construction of conveyor

    Need multiple idler pulleys Chain conveyor needs custom built

    Tank modifications Interior dividers

    Optimizing capacity Different sized apples (paddle


  • Waterwheel System

    -Utilization of a water wheel-System specs: Integrated into current system Waterwheel Push button No filter Brush wheel Ramp

  • Waterwheel SystemAnatomy

    Waterwheel Material : Acrylic Rectangular acrylic platforms fit in between

    waterwheel and act as paddles for picking up apples.

    Stainless steel rod acts as axle of the waterwheel.

    Steel rod is fitted with a bearing. The bearing is the mechanism of

    movement for waterwheel Acrylic parts are glued together using an

    acrylic solvent cement that is water-friendly. How would waterwheel be powered?

  • Waterwheel SystemPower Source

    Utilization of a belt pulley powered by a motor

    Belt hooks onto bearing of the water wheel axle

    Motor can be turned on/off at operators discretion

  • Waterwheel SystemAcrylic Properties

    Numerous pros of using acrylic:

    Cheap/readily available Water friendly and non-reactive with bleach Strong polymer Easy to clean Parts can be cut from acrylic sheets, using a water jet or laser cutting

  • Advantages of Waterwheel Option

    Aesthetics Innovative Water wheel can be operated at users discretion Easily maintained/cleaned

  • Float System Gravity Fed Float with overhead

    sprayer Hook wheel with

    interlocking ramp In-line filter with

    recirculation pump

  • Float System

    Advantages: Disadvantages:

    Simple Design Easily Integrated Easily Maintained Able to Prototype Recycles Water

    High Space Requirement High Cost with Stainless Steel Apples Not Fully Submerged

    Float Conveying

  • Float SystemFilter System

    Disadvantages: Simple design Automated cleaning Minimal operator control

    required Monitors pH level and

    bleach concentration

    High Cost Requires Maintenance


  • Design MatrixOption 1:Conveyor

    Option 2:Waterwheel

    Option 3:Float System

  • 416 Future Plans Finalize idea beginning of next semester Pick best pieces from each proposal Start prototyping immediately

    Wood/acrylic prototype Prove that our system will work

    Research can be done using prototype

  • Questions?