Optical Sorters for Nut Processing: WESORT’s Quad-Camera AI
Why Nut Processors Are Rethinking Optical Sorting
Nut processing facilities worldwide face a persistent operational challenge: traditional sorting relies heavily on manual labor, which drives up operational costs, slows throughput, and leaves material damage rates difficult to control. Conventional dual-camera sorting systems compound the problem by leaving scanning blind spots that fail to catch subtle blemishes, internal mold, small wormholes, and variations in material composition. For walnut, pecan, macadamia, pistachio, and hazelnut processors, these gaps translate directly into quality risk and lost revenue.
Shenzhen Wesort Optoelectronics Co., Ltd., operating under the brand WESORT, was founded in 2012 as a Sino-Swiss joint venture integrating research and development, design, production, sales, and service of automated vision recognition and intelligent sorting equipment. The company is publicly traded on the Shenzhen Equity Exchange (New Fourth Board, Stock Code: 761341), recognized as a High-Tech Enterprise, and certified as a “Specialized, Refined, Distinctive, and Innovative” (SRDI) Small and Medium Enterprise. This foundation positions WESORT as a serious technical partner for facilities seeking to modernize their nut sorting lines.
Multi-Spectral Vision: Closing the Blind-Spot Gap
The core of WESORT’s approach is a multi-spectral sorting capability spanning visible light, infrared, and X-ray, paired with a 360-degree four-camera visual system engineered to eliminate blind spots. Advanced neural network algorithms classify materials by color, shape, density, and internal structural defects in a single pass, keeping material breakage rates under 0.2%. For nut processors, this means one machine can evaluate the exterior appearance of a kernel while simultaneously screening for internal issues that a standard camera would never detect.
AI DeepSelect Series: Purpose-Built for Walnut and Pecan Grading
WESORT’s AI DeepSelect 8X – 6th Generation (Model: SSH4B10-AB ) is engineered specifically for intelligent grading of walnut kernels, addressing two persistent pain points: kernels are brittle and prone to chipping during high-velocity ejection, and grading itself involves complex variations in shape and color.
The system’s differentiated value includes:
- Minimized Damage: An anti-collision structure with a soft-landing physical path keeps kernel breakage under 0.2%.
- Multi-Grade Outputs: The machine sorts kernels into 10 distinct grades in a single pass.
- Labor Replacement: One unit matches the output of 20 manual sorting workers.
Its quad-camera array, powered by 16x high-performance computing, delivers full-view imaging that identifies subtle blemishes and shell residues that a two-camera setup would miss. This configuration is protected under a design patent for the Walnut Kernel Sorting Machine (ZL 2022 3 0211427.1). Key specifications include a rated power of 0.6 kW, air supply pressure of 0.6 MPa, air consumption above 900 L/min, a weight of 700 kg, and dimensions of 2329 × 2740 × 1729 mm — a footprint suited to established nut processing plants.
X-Ray Inspection for Internal Defects in In-Shell Nuts
Surface-level color sorting cannot reveal what is happening inside a closed shell. WESORT’s Single-Layer Dual-Channel High-Speed Belt-Type X-Ray Color Sorter (Model: S1L68H-XA-X ) addresses this directly. Visual sorting systems cannot detect internal insect damage, shriveled kernels, or mold hidden inside closed nut shells, so this system uses X-ray transmission imaging to penetrate hard shells and identify internal decay before packaging. It also performs density-based rejection, separating stones, glass shards, and metal fragments to protect downstream manufacturing lines from foreign objects.
The unit’s 600 mm wide belt and 2.2 m conveyor length increase processing speeds by 1.5 times over standard systems. It carries a Utility Model Patent for an X-ray color sorter (ZL 202023350138.4), operates at 3 kW, consumes under 1000 L/min of air, weighs 900 kg, and measures 1236 × 3119 × 2766 mm. This model is adapted for in-shell walnuts, macadamias, pecans, pistachios, and hazelnuts.
Infrared Separation of Shells and Kernels
Broken nut shell fragments often share the exact color and shape of good kernels, making visual color sorting ineffective on its own. WESORT’s One-Layer One-Channel Chute-Type Infrared Shell-Kernel Separator (Model: 6SXZ-68SC ) differentiates organic materials by infrared light absorption rather than visible color. Each channel is equipped with two color lenses and two infrared sensors, analyzing color and density concurrently, while dual-infrared multispectral recognition distinguishes shell fragments from kernels to achieve high-purity separation in a single pass. This design is protected under Utility Model Patent ZL 2023 2 3308598.4.
QuadEye 360-Degree Series: Zero-Blind-Spot Screening
For facilities handling nuts alongside seeds, coffee beans, and medicinal herbs, WESORT’s One-Channel Chute-Type AI Sorter with 4-View Imaging captures the entire surface of each particle using four cameras positioned at 90-degree intervals. This resolves the side and bottom inspection gaps that standard dual-camera systems miss, detecting micro-cracks and tiny wormholes. A single unit is designed to replace the combined function of color sorters, X-ray machines, and metal detectors, and its W-Cloud connectivity enables instant updates to the AI classification engine to support new material varieties without hardware changes.
Underlying Technology Platform
Across these product lines, WESORT’s “We-cloud” Ultra Brain Processing System integrates a database of 500,000+ plastic images and 7,000+ material models to enable dynamic recognition and learning. Detectable defect resolution reaches down to 0.01 mm², valve response time is 0.6 ms using an Italian magnetic levitation solenoid valve, and valve life span exceeds 20 billion cycles — technical foundations that support the consistency required in nut grading applications.
Market Validation in the Nut Sector
WESORT has partnered with international nut brands including Casarella, TURAL, D.A.R.AL, DURUCU, UYCHI Nuts, NUTSTIME, JIMA Nuts, AZIENDA AGRICOLA, CEREZCAN, Euronut, HaselGUT, NZR, and PISTALIFE. The company joined the China Chamber of Commerce of Foodstuffs and Native Produce (CFNA) and the Guangdong Nut Industry Association in 2024, reflecting continued engagement with the nut and dried fruit trade.
Certifications and Service Support
WESORT’s equipment carries ISO 9001 Quality Management System Certification, EU CE Food Equipment Export Certification, RoHS Compliance, and an SGS Food Contact Safety Test Report — credentials relevant to food-grade nut processing environments. Delivery is supported by 19 domestic regional offices and 15 overseas warehouses and subsidiaries, with 24/7 online multilingual after-sales support in 12 languages and offline specialists covering 26 Chinese provinces and 100+ countries.
For nut processors evaluating optical sorting technology, WESORT’s combination of multi-spectral inspection, dedicated walnut and pecan grading systems, X-ray internal defect detection, and infrared shell-kernel separation offers a documented, patent-backed approach to reducing manual dependency while maintaining kernel breakage under 0.2%.
https://www.wesortcolorsorter.com/
Shenzhen Wesort Optoelectronics Co., Ltd.