Onion Peeling Machine

The Industrial Pneumatic Dry Onion Peeling Machine is engineered to remove dry outer skins from fresh or cured onions using high-velocity compressed air rather than destructive mechanical friction. Purpose-built for commercial food processors, vegetable wholesalers, central kitchens, and automated industrial processing lines, this system efficiently processes yellow, white, red, and sweet onions while fully safeguarding the inner edible bulb.

Non-Abrasive Pneumatic Skin Removal
The peeling chamber utilizes calibrated, multi-directional compressed-air nozzles directed precisely at the onion surface. This targeted airflow cleanly shears away loose, dry outer layers without rubbing or crushing the bulb. Preserving the outer surface integrity prevents premature oxidation and moisture loss, delivering a high-quality product ready for immediate slicing, dicing, ring-cutting, or retail packaging.

Continuous-Feed Architecture
Designed to eliminate manual labor bottlenecks, raw onions enter through an engineered feed hopper and move automatically through the pneumatic chamber based on scale requirements:

• Model 300: Rated at 200--300 kg/h - Ideal for small-scale preparation rooms and institutional kitchens.
• Model 1000: Rated at 1,000--1,500 kg/h - Optimized for mid-sized wholesale vegetable distributors.
• Model 2500: Rated at 2,000--2,500 kg/h - Built for high-volume, 24/7 industrial processing lines.

Water-Free Dry Peeling Stage
Operating entirely without water eliminates the accumulation of wet organic waste at the peeling station. This clean, dry process removes the need for downstream dewatering equipment prior to slicing, drastically lowering overall facility wastewater treatment costs and environmental impact.

Food-Grade Sanitary Construction
All structural frames, housing panels, and internal product-contact components are fabricated from premium SUS304 stainless steel. The internal working zone features smooth, crevice-free surfaces that resist corrosion from acidic onion juices and allow for rapid, thorough washdowns using standard food-plant sanitation protocols.

This equipment operates seamlessly as a stand-alone station or integrates into a fully automated continuous processing workflow:

Standard Workflow: Onion Receiving -> Grading -> Pneumatic Peeling -> Inspection Conveyor -> Slicing / Dicing -> Packaging

Downstream machinery-including mechanical slicers, dicers, and optical sorting belts-interfaces directly with the peeler's discharge chute using standard modular conveyor connections.

Compressed Air Supply: Requires an external industrial screw air compressor capable of delivering a stable operating pressure of 0.8 to 0.9 MPa. Air consumption rates scale directly with the machine model. An inline air dryer and water separator are strictly required to protect internal pneumatic solenoid valves.

Raw Material Sizing & Grading: For peak peeling efficiency and minimal waste, raw onions should be pre-sorted into uniform diameter bands (minimum recommended diameter: 40 mm) to ensure consistent airflow exposure within the chamber.

To enable our engineering team to configure the optimal machine model and compressor pairing for your facility, please supply the following parameters with your inquiry:

• Required Hourly Capacity (kg/h)
• Onion Variety & Condition (Yellow, white, or red; fresh field-run vs. cured/stored)
• Average Diameter Range (mm)
• Local Electrical Power Supply (Voltage, phase, frequency)
• Existing Compressor Availability (Whether an independent, compatible air supply is already available on-site)