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Onion Sorting and Grading Line

Highly effective peeling, deep cleaning, and precise grading.

A Turnkey Solution for Onion Grading and Sizing

GELGOOG’s fully automated onion grading and packaging system integrates peeling, bubble cleaning, and roller grading technologies, achieving efficient cleaning and millimeter-level precision grading while ensuring onion integrity. We provide you with a complete and efficient onion grading and packaging solution to help increase production capacity, reduce costs, and guarantee your return on investment with professional technology.

onion

Why Choose GELGOOG's Sorter?

Engineered for Excellence, Designed for Your ROI.

Sorting Accuracy
%
Labor Cost Reduction
%
Yield Increase
%
Partner Countries
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Onion Peeling

Through the combined action of a specially designed brush roller and high-pressure airflow, the dried outer skin and root residue are efficiently peeled off without damaging the onion’s surface. The system is equipped with a dust collection device to ensure a clean working environment.

  • Precisely controlled friction ensures efficient removal of the dry skin while preserving the fresh texture of the onion’s outer layer.
  • Adjustable peeling intensity automatically adapts to different varieties and sizes of onions, ensuring consistent processing results.
  • A debris collection and discharge mechanism automatically cleans and collects impurities during continuous production.
Onion peeling machine
Onion washing machine

Bubble Cleaning

GELGOOG’s bubble cleaning tank generates a dense cluster of bubbles through a bottom device. As the bubbles rise, they comprehensively envelop and impact the onion’s surface, effectively separating fine impurities adhering to the gaps between layers. This is combined with a top spray for a final rinsing.

  • Bubble penetration cleaning can penetrate into the fine crevices of the onion’s surface, achieving physical-level deep cleaning.
  • Combined with a multi-stage filtration and circulation system, water consumption is significantly reduced.
  • Controlled water flow and bubble intensity ensure that each onion undergoes a uniform cleaning process.

Roller Grading

The roller grading machine adopts a modular screen design. As the roller rotates at a uniform speed, it quickly identifies and separates onions by their outer diameter through a pre-set precision grading aperture array. A unique material guiding system ensures even distribution of onions within the roller, preventing clogging.

  • Maintaining unobstructed screen holes during operation effectively prevents material blockage and ensures sorting accuracy.
  • The grading screen is made of a special wear-resistant material, ensuring durability and maintaining accurate grading apertures over the long term.
  • A heavy-duty base and optimized transmission design ensure stable operation and low noise even at high speeds.
Onion sorting machine
Onion packing machine

Automated Packaging

Graded onions are then transported to an automated packaging station. The system can seamlessly integrate with various packaging machines (such as mesh bag packaging and carton packaging) to achieve continuous production line operations from grading to packaging.

  • The modular output design allows for quick adaptation to mainstream automated packaging equipment on the market, facilitating easy integration.
  • Buffer chutes and guiding devices greatly reduce collision damage to onions during conveying and unloading.
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