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, in continuous flow, designed for cooperatives and packers who want to close the processing chain under their own roof.
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 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 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.