Diverging Roller Graderin
Post Harvest Processing
Presentation By Optimal Lab Technologies
Sorting/Grading
Grading• Manual• Mechanical
• Process of categorizing fruits and vegetables according to quality
Qualities graded Size Mass Colour Profile
Diverging Roller Grader Working
• Fruits/Vegetables roll between diverging rollers
• Pushed forward by the roller gradient• Fall between the rollers as the slot size
increases• Location of fall determines the size of the
sorted produce• Bin/Tray is placed underneath the rollers to
collect the graded produce
Diverging Roller Grader
Applications• Pre-Grading • Grading
• Ideally Suited for Citrus and other round fruits and Vegetables
• Can be used for grading Potatoes and Onions
• Not Suitable for Long Vegetables like Carrots and Radishes
Diverging Roller Grader
Technical Specifications• Capacity: 2-3 Tons/Hr (Onions and Potatoes)• Frame Size: 1750 X 950 X 900mm• Max. No of Grades: 5• Frame Material: Low Carbon Steel• Rollers: Stainless Steel 304• Motor Type: ½ HP, Single Phase, Geared
Diverging Roller Grader Advantages
• Lower Cost Compared to other graders• Simpler Mechanisms Result in Higher Reliability• Greater Flexibility in adjusting to different grade sizes• Lower Power Consumption resulting in greater savings
in the long run• Can be operated where 3 phase supply is not available
Limitations • Cannot be used to grade longer vegetables like Carrots
and Radishes• Limited Throughput
Diverging Roller GraderWorking
Grading VideosPotato Grading
Grading VideosPotato Grading – 2
Grading VideosOnion Grading - 1
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