A walnut kernel peeling machine removes the thin, bitter skin from walnut kernels using high-pressure water jets. This machine processes 200–500 kg of kernels per hour. It achieves a peeling rate of over 99%. The output is clean, skin-free kernels ready for drying, roasting, or further processing into walnut milk, paste, and premium snacks.
The physical water method replaces traditional chemical soaking. Chemical methods use caustic soda or lye. They take 20–30 minutes per batch. They leave residues that affect taste and safety. The high-pressure water method takes minutes. It leaves no chemical traces. This makes the final product safer for food production and export markets.
Taizy has supplied nut processing equipment for over 20 years. Machines are exported to more than 30 countries. Every walnut kernel peeling machine is backed by a 12-month warranty and lifetime technical support.
What Are the Technical Specifications of the Walnut Kernel Peeling Machine?
| Paramètre | Spécification |
|---|---|
| Machine type | Continuous high-pressure water peeling |
| Capacité | 200–500 kg/h |
| Taux de pelage | >99% |
| Kernel breakage | <5% |
| Peeling method | Physical water jet, no chemicals |
| Water system | Closed-loop with filtration |
| Operation | Continuous, single operator |
| Matériel | Food-grade 304 stainless steel contact parts |
| Source de courant | 380V, 50Hz, three-phase |
| Control | Simple button control panel |
| Optional equipment | Walnut kernel drying machine, color sorter |
How Does the Walnut Kernel Peeling Machine Work?
The machine uses a conveyor belt to move kernels through a washing chamber. Multiple water nozzles spray high-pressure water from different angles. The water pressure removes the skin without damaging the kernel inside.
The Processing Steps
- Feeding: Kernels enter the hopper and move onto a stainless steel mesh conveyor belt.
- High-pressure washing: Water jets spray the kernels from above and below. The pressure breaks the skin bond.
- Skin separation: The loosened skin washes away with water. A filter separates the skin from the water.
- Discharge: Clean kernels exit the machine. The water recirculates through a filtration system.
- Drying: The wet kernels move to a drying machine or dryer room. This reduces moisture content.
The machine uses a water recycling system. This reduces water consumption. The filtration system removes skin particles. Clean water returns to the nozzles.
What Are the Main Features of This Walnut Peeling Equipment?
The machine has several design advantages for commercial production.
Physical Peeling Method
The machine uses only water. No chemicals are added. This makes the product safer for direct consumption. It also eliminates chemical procurement and handling costs.
Continuous Operation
The conveyor belt design allows non-stop feeding. This increases daily output. One operator can manage the machine during normal production.
Low Kernel Breakage
The water pressure is adjustable. Operators set the pressure based on kernel size and skin adhesion. This prevents kernel damage. The breakage rate stays below 5%.
Water Recycling
The system filters and reuses water. This reduces water consumption by up to 80% compared with open water washing. It also reduces wastewater discharge.
Easy Integration
The machine connects directly to walnut shelling equipment on the inlet side. It connects to drying equipment on the outlet side. This creates a complete processing line.
What Products Can the Walnut Kernel Peeling Machine Process?
The machine is designed specifically for walnut kernels. It works best with kernels that have been properly shelled and sized.
Suitable Applications
- Walnut milk production: Clean kernels without skin produce smoother milk with less bitterness.
- Walnut paste and butter: Skin-free kernels give a lighter color and milder taste.
- Fresh-packed walnuts: The skinless kernels have better appearance and longer shelf life.
- Candied amber walnuts: Clean kernels absorb sugar syrup evenly. The final product has consistent color.
- Walnut beverages: Skin removal reduces sediment in bottled or canned drinks.
The machine can also process other nuts with thin skins. These include pine nuts, cashews, and almonds. However, results may vary depending on skin adhesion and kernel hardness.
How Does This Compare to Chemical Peeling Methods?
| Factor | Chemical Soaking | Walnut Kernel Peeling Machine |
|---|---|---|
| Peeling method | Caustic soda or lye soak | High-pressure water jets |
| Processing time | 20–30 minutes per batch | Continuous, minutes per batch |
| Chemical residue | Requires thorough rinsing | Aucun |
| Water usage | High, non-recyclable | Low, closed-loop recycling |
| Kernel safety | Chemical contact risk | Physical method, no contamination |
| Labor requirement | Multiple workers for soaking and rinsing | One operator |
| Equipment cost | Lower initial cost | Higher initial cost, lower operating cost |
| Product quality | Risk of over-peeling or under-peeling | Consistent, adjustable results |
Chemical soaking requires mixing caustic soda with hot water. The mixture soaks kernels for 20–30 minutes. Workers then rinse the kernels multiple times. This process is time-consuming and creates wastewater treatment issues.
The physical water method eliminates chemical handling. It also reduces processing time from hours to minutes per batch.
What Are the Benefits of Using a Walnut Kernel Peeling Machine?
The machine offers measurable advantages for commercial nut processors.
| Benefit | Impact on Production |
|---|---|
| No chemical additives | Product meets food safety standards for direct consumption |
| High peeling rate | Over 99% of kernels are completely skinned |
| Low breakage | Less than 5% kernel damage preserves value |
| Water recycling | Reduces water costs and environmental impact |
| Continuous operation | Higher daily output compared with batch processing |
| Easy operation | Simple controls reduce training time and errors |
| Labor savings | One operator replaces multiple manual peeling workers |
The machine also improves the final product appearance. Skin-free kernels have a uniform light color. This increases market appeal for premium products.
Pourquoi choisir Taizy ?
- 20+ years of experience in nut processing machinery manufacturing
- Exported to 30+ countries with proven installation and support network
- Complete processing line supply from shelling to packaging
- Food-grade 304 stainless steel contact parts for hygiene and durability
- 12-month warranty on main components with lifetime technical support
- Remote installation guidance and video training for quick commissioning
- Spare parts availability for nozzles, filters, belts, and bearings
- Custom voltage and plug options for different regional standards
- Recipe and process consultation from our walnut processing engineers
What After-Sales Support Does Taizy Provide?
Taizy supports every machine from delivery to long-term operation.
- Installation guidance: Engineers provide video call support for setup and first operation. On-site installation is available for large orders.
- Operator training: Taizy provides operation manuals and training videos. Online training sessions cover daily operation, cleaning, and basic troubleshooting.
- Spare parts supply: Wear parts including nozzles, filters, and conveyor belts are available from stock. Express shipping ensures minimal downtime.
- Technical support: Remote video assistance is available for any operational issues. Engineers respond within 24 hours.
- Warranty coverage: The machine carries a 12-month warranty on main components. This covers manufacturing defects and workmanship.
Frequently Asked Questions
What is the difference between this machine and a chemical peeling line?
The walnut kernel peeling machine uses high-pressure water only. Chemical lines use caustic soda or lye. The water method is faster, safer, and produces no chemical residue. Chemical lines require hot water mixing, long soaking times, and extensive rinsing.
Can the machine handle all walnut varieties?
The machine works best with standard commercial walnut varieties. The 185 variety from Xinjiang can be processed without any additives. Other varieties may need slight adjustments in water pressure or processing time. Contact us with your specific variety for confirmation.
What is the water pressure range?
The machine uses adjustable water pressure. Typical settings range from 0.5 to 1.5 MPa. Operators adjust pressure based on kernel size and skin adhesion. The control panel has a pressure gauge for easy monitoring.
How much water does the machine use?
The closed-loop system recycles water. Fresh water consumption is minimal. The system only needs to replace water lost to evaporation and skin removal. Daily water usage is typically 100–200 liters depending on production volume.
What is the peeling rate?
The machine achieves over 99% peeling rate. A small percentage of kernels may have partial skin remaining. These can be removed by a color sorter or manual inspection after peeling.
How many kernels are damaged during peeling?
The kernel breakage rate is below 5%. The water pressure is adjustable to prevent damage. Proper shelling before peeling also reduces breakage. Cracked or damaged kernels before processing may break more easily.
What maintenance is required?
Daily cleaning removes skin residue from filters and nozzles. Weekly checks include water pump inspection and nozzle alignment. Monthly maintenance includes lubrication of conveyor bearings and inspection of electrical connections.
Can the machine connect to my existing shelling line?
Yes. The machine has a standard inlet hopper that accepts kernels from conveyor belts or bucket elevators. The outlet connects to drying machines or collection conveyors. We can provide layout drawings for line integration.
What power supply is needed?
The machine requires 380V, 50Hz, three-phase power. Total power consumption is approximately 3–5 kW depending on the model. Confirm your facility power supply before ordering.
What is the delivery time?
Standard delivery is 30–45 days after order confirmation. This includes production, testing, and export packaging. Rush orders may be available for urgent requirements.
Get a Quote for Your Walnut Kernel Peeling Machine
A walnut kernel peeling machine improves product quality, reduces labor costs, and eliminates chemical processing. The physical water method is safe, efficient, and environmentally friendly. With a capacity of 200–500 kg/h and a peeling rate over 99%, this machine transforms your walnut processing operation.
Tell us your daily processing volume, walnut variety, and whether you need a drying machine. Our team will recommend the right configuration and send you a detailed quotation.
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This dry‑type fresh walnut dehusker reaches 3.5‑6 t/h throughput, adopting bionic chain‑blade cutting structure for water‑free green husk removal with low kernel damage rate. It serves as ideal pre‑processing equipment matching the walnut cracking machine: de‑husked raw walnuts flow into the cracking unit for hard‑shell breaking, forming complete walnut primary‑processing workflow for orchards and nut‑processing factories.
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- After‑sales: 12‑month full‑machine warranty, customizable capacity and PTO tractor‑driven configuration.
