Decorticator Machine

A decorticator is a machine that strips the skin, bark, or rind (husk/shell) off nuts, plant stalks, grains, and seeds in preparation for further processing. They are widely used in agriculture and oil mills to increase productivity by automating the labor-intensive process of manual shelling.

Key Details

Function: The primary function is separation—removing the hard, outer layer from the inner kernel or fiber.

Applications: They are versatile and can be adapted with slight modifications to handle a variety of materials, including:

Groundnuts (peanuts)

Castor and Jatropha seeds

Almonds and sunflower seeds

Hemp and sisal stalks (for fiber extraction)

Coconut husks (for coir fiber and cocopeat)

Types: Decorticators can be broadly classified into two main types based on their power source and scale:

Manual: Hand-cranked or pedal-operated, suitable for small-scale use.

Power-Operated: Use electric motors or diesel engines for medium- to large-scale industrial operations, capable of processing over 1,000 kg per hour.

Working Principle

The specific working principle varies slightly depending on the material being processed, but generally involves these core steps:

Feeding: Raw material is fed into a hopper.

Shelling/Stripping: Within a decorticating chamber, mechanisms such as rotating blades, an oscillating sector with pegs, or co-acting rollers impact, rub, and collide with the material to break the outer shell.

Separation/Cleaning: The shelled kernels and husks fall onto a sieve or screen. An integrated air blower then separates the lighter husks from the heavier kernels, often discharging them through separate outlets.

Components

While designs vary, common components often include:

Frame: The main structure providing support.

Hopper: The inlet for raw materials.

Decorticating Chamber: Where the actual shelling happens.

Rotating Blades/Rotor/Oscillating Sector: The moving parts that apply force to the material.

Concave Sieve/Screen: Perforated surfaces used for sizing and separation, often interchangeable to accommodate different material varieties.

Blower Assembly (Fan): Used for air-based separation of husks from kernels.

Discharge Outlets: Separate chutes for the kernels/fiber and the waste husks/skin.

Benefits

High Efficiency: Achieves high shelling rates (e.g., up to 98% for peanuts).

Reduced Labor: Significantly decreases the manual effort and time required for processing.

Consistent Quality: Helps maintain the quality of the kernels by minimizing breakage during the process.

Versatility: Customizable for a range of agricultural products.

MODEL MOTOR CAPACITY

2HP 2HP 300KG/HR

3HP 3HP 500KG/HR