Walnut Shelling Line | Walnut Cracking Machine

The walnut shelling line is a complete production system designed to crush hard-shelled walnuts efficiently, separate the shell from the kernel, and grade the kernels by size.

Our walnut shelling production line features a customizable modular design to suit different production capacities, ranging from medium-scale processing (500 kg/hour) to large continuous production lines (single shelling unit up to 1-1.5 t/hour).

Highlight of the walnut shelling line

1. This walnut shelling line employs an integrated shelling and kernel separation system, minimizing material transfer losses. The shelling section features an adjustable shelling gap and utilizes airflow and sieving for multi-stage kernel separation.
2. By grading the walnuts before shelling and precisely matching the shelling gap, kernel integrity can reach 70% or higher, resulting in a lower kernel breakage rate compared to traditional single-machine processing.
3. This walnut shelling production line supports a dual grading system, including grading by original walnut size (3-4 grades or more) and grading by kernel size after shelling (large/medium/small), allowing the final product to better meet the needs of different markets.
4. Each machine on this walnut processing production line can operate independently yet seamlessly integrate into the entire line, enabling upgrades or expansion as production demands increase.

Working application of the walnut cracking and shelling machine

The walnut shelling line is suitable for processing hard-shelled walnuts, wild walnuts, macadamia nuts, and other hard nuts through shelling and grading. The final walnut kernels can be used in snack food processing, baking, confectionery making, and oil extraction.

This production line is suitable for walnut processing plants, agricultural cooperatives with walnut orchards, nut export companies, or large walnut farms, improving production profit rate through high-quality and efficient shelling.

Walnut shelling production line workflow

The following is the standard workflow for a 500 kg/hour walnut shelling line:

Step 1: Walnut raw materials are fed into the production line via an elevator. (The production rate can be controlled by adjusting the feed speed.)

Step 2: These walnut raw materials are graded into 3-4 size grades using a grading machine or drum grading machine. This step, processing materials of the same size together, improves kernel integrity and achieves a cleaner shelling result.

Step 3: The graded walnuts enter the walnut shelling machine. During this process, the internal shelling gap can be adjusted according to the walnut size to reduce kernel damage.

Step 4: After shelling, airflow separation, and a vibrating screen separate the shell from the kernel. Each size grade of walnuts has an independent airflow adjustment device to ensure optimal separation.

Step 5: The final sorting conveyor belt is for manual supervision to remove residual shell fragments and pick out substandard kernels. This helps improve the purity and market value of the final kernels.

Step 6: This step is to grade the walnut kernels by size to facilitate product quality differentiation, better grade, and sell them to increase profits.

Three solutions for walnut peeling

Option 1: Small-batch walnut shelling and separating line

This production line is primarily suitable for small and medium-sized processing enterprises. Its main equipment includes an elevator, a walnut shelling and grading integrated machine, a shell and kernel separator, and a sorting conveyor.

The main advantages of our walnut shelling line are a small footprint, easy installation, and operation. However, it requires a relatively large workforce, lacks grading, and results in inconsistent product quality, hindering profit maximization.

Walnut shelling equipment	Parameters
Hoist	Dimensions: 0.8×0.7×4.5 m Power: 0.75 kw Tension : 380 V 50 Hz Material: Carbon Steel
Shelling and grading machine	Output: 300-400 kg/h Power: 1.5 kw Tension : 380 V Integrity: 70% Dimensions: 2.5×0.8×3.2 m Material: Carbon Steel Weight: 560 kg
Hoist	Dimensions: 0.8×0.7×2.8 m Power: 0.75 kw Tension : 380 V 50 Hz Material: Carbon Steel
Kernel separator	Dimensions: 3.2×0.8×1.6 m Weight: 350 kg Power: 4.5 kw Tension : 380 V Fréquence : 50 Hz Output: 400 kg/h
Sorting conveyor	Dimensions: 6×1×0.75 m Power: 1.1 kw Tension : 380 V Fréquence : 50 Hz

Option 2: Standard 500kg/h walnut shelling production line

This walnut shelling line includes a raw walnut elevator, a walnut grading machine, a new type of walnut shelling machine, a multi-stage shell and kernel separation system, a sorting conveyor belt, and a walnut kernel grading screen.

Its operation is more continuous, and the quality of the walnut kernels is stable and controllable. The initial investment cost is not very high, and the production line is easier to upgrade.

Machines	Specifacation	Matched with the line
Bucket elevator	Power: 0.75 kw Voltage: 380V, 50Hz Size: 3.5×0.5×0.5 m Poids : 160 kg	Matched with line
Walnut grading machine	Power: 1.1 kw Size: 3.6×0.9×1.6 m Weight: 450 kg 3–4 size grades	400 kg/h
Bucket elevator	Power: 0.75 kw Voltage: 380V, 50Hz Size: 3.5×0.5×0.5 m Poids : 160 kg	Matched with line
Walnut shelling & separating machine	Shelling gap adjustable by walnut size Air suction shell removal Centrifugal re-shelling system Shell & kernel discharged separately Power: 1.5 kw Fan Power: 2.2 kw Voltage: 380V, 50Hz Size: 2.5×0.75×2.3 m Weight: 400 kg	500 kg/h
Sorting conveyor belt	Size: 3.5×1×0.75 m Power: 0.75 kw Voltage: 380V, 50Hz	Manual sorting
Bucket elevator	Power: 0.75 kw Voltage: 380V, 50Hz Size: 4.5×0.5×0.5 m Poids : 160 kg	Matched with the line
Multi-size grading	Three-layer vibrating screen Screen hole: 6–10 mm Power: 0.5 kw Size: 2.4×0.8×0.7 m Weight: 300 kg	Matched with the line

Option 3: Large-scale 1-1.5t/h walnut shelling line

This system includes a large-capacity elevator, a drum grading machine, multiple walnut shelling machines in parallel, a quantitative feeding hopper, a dual-frequency shell and kernel separator, a gravity destoner, a residue screening machine, and a final manual sorting conveyor.

It is suitable for large-scale production, effectively reducing production costs per ton, and is one of the most complete production lines available.

Equipment name	Main parameters	Quantité
Raw material elevator	Size: 0.6×0.6×5 m Power: 1.1 kw Voltage: 380V, 50Hz	1 set
Drum grading machine	4 size grades Power: 2.2 kw Size: 5.5×1.1×2.5 m Weight: 2,300 kg	1 set
Electromagnetic feeding hopper	Power: 0.05 kw Size: 1×1×1.6 m	4 ensembles
Single walnut shelling machine	Power: 3 kw Voltage: 380V, 50Hz Size: 3.5×0.9×1.3 m Weight: 280 kg	4 units
Sorting conveyor (Kernel collection)	Size: 6×0.6×1.5 m Speed adjustable Power: 0.75 kw	1 set
Shell–kernel separator (Dual frequency)	Dual motor frequency control Motor power: 1.5 kw + 3 kw Voltage: 380V, 50Hz	2 units
Gravity destoner	Capacity: 2,000 kg/h Power: 5.5 kw + 1.5 kw Weight: 1,000 kg	1 set
Final vibrating screen	Removes residual shells Power: 0.18 kw Size: 1.6×0.8×0.6 m Power: 0.75 kw	1 set

Contact us for a customized walnut shelling line

Due to the varying characteristics of different walnut varieties, the integrity of the kernel, shell thickness, moisture content, and production capacity all influence the final equipment configuration.

Furthermore, everyone’s requirements for walnut processing results and budget differ. The three configurations I mentioned above are basic and not fixed. If you have any other requirements, it can be added to or replaced as needed.

If you would like to learn more about walnut shelling lines, please contact us immediately. And inform us of your walnut variety, required production capacity, and final product requirements. We will tailor a walnut shelling production line to maximize your processing plant’s efficiency and profitability.

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