Nuts and dried fruit present a unique sorting challenge: high-value raw materials arrive with a wide range of visible defects, including shell fragments, mold, discoloration, and foreign material such as stones, sticks, or processing debris. Sorting these contaminants at an early stage is critical: missed defects carry costly consequences downstream, while over-rejection erodes valuable yield.
The Legende HD Series is an intelligent vision-based sorting system tailored for this exact scenario. Powered by high-resolution RGB (HR-RGB) VIS imaging and proprietary AI deep learning algorithms, the system performs real-time scanning and surface feature analysis on nuts and dries fruit, and paired with high-performance air ejectors, achieves millisecond-level precision rejection of discolorations, surface blemishes, and foreign material.
Empowered by AI-driven surface feature recognition, the system continuously learns from real production data, steadily improving its detection accuracy. This means the equipment's performance is not static after deployment; instead, it continuously adapts and improves as production data accumulates, delivering stable and reliable sorting performance. It enables nuts and dried fruit processors build a strong quality defense from the earliest stage of production, effectively ensuring product purity and processing profitability.
Applications

Technical Features
● Tailored Vision-Based Sorting System for Nuts and Dried Fruit
✦ Innovative dual-belt structure
✩ Upper Primary Sorting Belt
Applies stringent rejection standards to efficiently remove discolorations, surface blemishes, and foreign material, drastically reducing missed detections.
✩ Lower Secondary Sorting Belt
Performs re-inspection on the rejected stream, efficiently recovering good products to boost overall yield.
✦ High-Performance Vibratory Feeder
Evenly distributes nuts and dried fruit into a single layer, effectively minimizing material overlap, and providing a stable material posture for high-precision detection.
✦ Easy-to-Clean Structural Design
Adopts food-grade stainless steel construction with sealed camera chamber and electrical cabinet, effortlessly handling complex processing environments.
✦ Integrated Self-Cleaning System
Automatically cleans the camera chamber glass to continuously keep the scanning area clear, reducing manual intervention and downtime for cleaning, and ensuring continuous and stable equipment operation.
✦ Multi-Specification Model Portfolio
Offers belt widths of 600 mm and 1200 mm, meeting diverse throughput requirements.
● AI Powered High-Precision Defect Inspection System
✦ High-Resolution RGB (HR-RGB) VIS Imaging
Clearly presents material surface features, providing reliable image input for AI algorithms to ensure the accuracy and stability of visual recognition.
✦ Proprietary AI Deep Learning Algorithms
Enhances surface feature recognition and supports model retraining with real-world production data, continuously improving the detection accuracy through deep learning.
✦ High-Intensity LED Illumination
Guarantees a constant imaging environment with clear and stable images, unaffected by external light changes, ensuring consistent detection results across different time periods and batches.
High-precision detection for various defects, contaminants, and foreign material based on surface features:
✩ Color Defects: Dark spots, oxidation, abnormal color
✩ Shape Defects: Broken, shriveled, misshapen, oversized, undersized
✩ Processing Defects: Shell fragments, pit residues, adhered skins
✩ Biological Contaminants: Insect damaged, visible mold, rotten
✩ Foreign Material: Insects, stems, leaves, stones, glass
● In-House High-Performance Air Ejector System
✦ Optimized Ejector Valve Design
Balances durability, response speed, and air consumption efficiency, maintaining stable performance even under long-term, high-frequency operation.
✦ High-Speed, High-Precision Ejection
Delivers millisecond-level response and precise material rejection, ensuring optimal sorting accuracy even under high-throughput conditions.
✦ Reduced Operating Costs
Significantly lowers the false reject rate, minimizing material waste from good products being incorrectly ejected, while optimizing air consumption to reduce overall operational expenses.
● 15-Inch Industrial Touchscreen Control Panel
✦ Intuitive Interaction
User-friendly human-machine interface (HMI) with multi-language support.
✦ One-Click Switching
Quickly recalls sorting parameters for different products.
✦ Comprehensive Remote Support
✩ Remote access and real-time monitoring
✩ Performance data dashboard
✩ Online expert diagnostics
✩ Interactive troubleshooting
Specifications
|
Model |
Belt Width (mm) |
Air Nozzle |
Air Pressure (MPa) |
Air Consumption (m3/min) |
Voltage |
Power (kW) |
Dimension (mm) |
Unpacked Weight (kg) |
|
Legende HD2 |
600 | 256 |
0.6~0.8 |
<2.0 |
220V~50/60Hz |
6.4 |
3641×1700×2804 |
1393 |
|
Legende HD4 |
1200 | 512 |
0.6~0.8 |
<4.1 |
220V~50/60Hz |
7.9 |
3641×2300×2804 |
1836 |