From harvest to big bag, with no intermediate manual steps.
The Integral Line Model M processes walnut from field discharge to big-bag filling through dehulling, double washing, inspection, oven drying, and packaging. The largest line in the dehulling catalog: 17 integrated machines in continuous flow, designed for cooperatives and packers who want to close the processing chain under their own roof.
17 integrated machines, five sectors in continuous flow:
A — Reception and pre-cleaning
- Reception Vat (Lagar) with buffer capacity for direct field discharge (truck or bins).
- Vat Elevator dosing the flow toward pre-cleaning.
- Rotary Pre-cleaner — hexagonal cylinder with drawn-square rods spaced 20 mm apart that removes leaves, sticks and stones before washing, protecting the downstream machinery.
B — Washing and dehulling
- Rotation Washer that softens the husk and separates adhered soil in a first controlled cycle.
- Rotary Washer (Ø1,200 cylinder) with full-cone sprayers: second intensive cleaning cycle.
- Rotary Huller — similar in philosophy to the American It-Hulls equipment — removes the green husk via a rotary brush with steel bristles, with a pneumatic-shock height-control system.
C — Manual inspection
- Inspection Conveyor with adjustable speed and side platforms so operators can work comfortably and remove out-of-spec walnut before drying.
D — Oven drying
- Elevator to Ovens taking the washed and inspected walnut to the drying sector.
- Modular Distribution Conveyor to Ovens distributing the flow among the oven modules.
- Oven Module with Platform: individual ovens with elevated platforms for inspection and maintenance. Modular: the plant starts with the required number of modules for its volume and can grow.
- Burner providing the drying heat under thermal control.
- Oven Extraction Conveyor collecting the dried walnut at the end of the cycle.
- Belt Collection Conveyor consolidating the flow from the different oven lines before packaging.
E — Packaging and reject handling
- Big-Bag Filling System integrated with the final output — the dried walnut falls directly into the big bag without intermediate handling.
- Trough Conveyor for Rejects collecting material rejected during inspection.
- Waste Elevator lifting the reject for dispatch outside the line.
- Dehulling Assembly (overview): render of the assembly showing how the 16 individual machines integrate into the complete architecture.
Construction and sanitary philosophy:
Frames and structures in SAE 1010 mild steel with anticorrosive primer and polyurethane enamel finish — proven ruggedness for the abrasive dehulling environment. Sectors in direct contact with wet product (washers, hopper) in stainless steel with sanitary polish. Ovens with thermally-insulated combustion chambers. Drives with oil-bath gearmotors and fully shielded three-phase motors.
Albion technology benefits:
- Full chain under a single supplier: dehulling + washing + drying + packaging integrated — no external contractors for drying.
- Modular ovens: starts with the required number of modules for the volume and grows without replacing the line.
- 2,000–2,500 kg/h on husked walnut — appropriate scale for cooperatives and medium-large plants.
- Product ready for storage at line exit: walnut comes out dry in a big bag, ready for warehouse or dispatch.
- Pre-assembled and concatenated in our workshop before dispatch — the line arrives ready to install on-site.
- 12-month warranty on mechanical parts of our manufacture.
The complete engineering solution for those looking to close the entire post-harvest process in their own single line.