Sesame Seed Dehulling Machine

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11 September 2026
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Sesame Seed Dehulling Machine Overview

The sesame seed dehulling machine is a core optional pretreatment device in the complete sesame oil production line. It is specially designed to remove the outer hard hulls of cleaned sesame seeds, realizing automatic separation of sesame kernels and seed coats.

Unpeeled sesame seeds contain bitter hulls, which cause dark oil color, impure taste and slight bitter aftertaste in final sesame oil. After dehulling treatment, pure sesame kernels are obtained. The pressed sesame oil features light color, pure fragrance, no bitterness and high market grade, which is ideal for high-grade bottled sesame oil, export-grade sesame kernels and premium sesame paste production.

This equipment is divided into fully automatic wet dehulling machine (industrial mainstream) and dry dehulling machine (water-free type). It can work independently or form a fully automated production line by connecting withsesame seed cleaning machine, sesame roasting machine, sesame oil press machine, sesame oil filter machine and sesame oil refining machine.

Production Line Process Position

Complete sesame oil production process association:

Sesame Seed Cleaning Machine (remove stones, sediment and impurities) → Sesame Seed Dehulling Machine (Optional) → Elevator Conveying → Sesame Roasting Machine → Sesame Oil Press Machine → Sesame Oil Filter Machine →Sesame Oil Refining Plant (Optional) → Finished Oil Storage

Process Note: Dehulling is an optional process. Traditional small-ground sesame oil retains hulls for unique burnt aroma; high-end exported light-colored sesame oil must be dehulled to improve product competitiveness.

Product Classification & Detailed Introduction

1. Fully Automatic Wet Sesame Dehulling Machine (Industrial Standard Model)

It is the most widely used dehulling equipment in large and medium-sized sesame oil factories and sesame deep processing plants, with the highest dehulling rate and the best kernel integrity.

Working Principle

Adopts integrated process of water soaking softening + mechanical friction peeling + water flow specific gravity separation + centrifugal dewatering.

Softening and Tempering: Clean sesame seeds from the cleaning machine are soaked in constant-temperature water to soften the outer hull, forming a loose state between hull and kernel, which greatly reduces kernel breakage.
Simulated Manual Friction Peeling: The internal stirring system drives sesame seeds to rub against each other efficiently, completely separating loose seed hulls from pure kernels.
Specific Gravity Separation: Utilizes the density difference between sesame hulls and kernels. Light hulls float and are discharged with water flow, while pure sesame kernels sink for centralized collection.
Automatic Dewatering: The peeled wet kernels are centrifugally dewatered to control reasonable moisture content, which can be directly sent to the sesame roasting machine without natural drying.

Core Advantages

High Precision Processing: Dehulling rate ≥95%, kernel breakage rate ≤3%, no mixed hulls in finished kernels
Superior Oil Quality: Effectively removes bitter substances in seed hulls, making pressed sesame oil clear, fragrant and mellow
Food-grade Standard: All material contact parts are made of 304 stainless steel, corrosion-resistant, easy to clean, meeting food safety production standards
Fully Automatic Continuous Operation: One-key start, automatic feeding, peeling, separation and discharging, saving labor cost
Wide Compatibility: Suitable for high-precision processing of white sesame seeds (the first choice for high-end sesame oil)

Applicable Scenarios

Large-scale sesame oil factories, export-grade peeled sesame kernel processing plants, high-end bottled sesame oil production projects, commercial sesame paste processing enterprises.

2. Dry Sesame Dehulling Machine (Water-Free Energy-Saving Model)

Water-free and pollution-free design, suitable for small and medium-sized processing sites and water-scarce areas, with simple process and low operating cost.

Working Principle

Adopts pure physical processing technology of abrasive friction peeling + multi-stage wind screening classification. Dry sesame seeds directly enter the equipment, and the outer hard hulls are stripped through high-speed friction of abrasive components. Then the light seed hulls are separated and discharged by high-pressure wind force, and full-grained sesame kernels are screened out.

Core Advantages

Zero Water Consumption: No soaking and no sewage discharge, no need for water supply and drainage system, saving site investment
Low Operating Cost: Short process flow, low energy consumption, simple daily maintenance
Flexible Operation: Small footprint, suitable for intermittent small-batch production

Limitations

Compared with wet type, the dehulling rate is slightly lower, and the kernel breakage rate is slightly higher. It is not recommended for high-end light-colored sesame oil production.

Applicable Scenarios

Water-scarce areas, small sesame processing workshops, black sesame processing, ordinary edible peeled sesame production.

General Product Features

Upgrade Sesame Oil Grade: Remove bitter hulls, eliminate oil turbidity and bitter taste, significantly improve oil color and flavor
Complete Line Matching: Perfectly dock with the front-end cleaning process and back-end roasting and pressing process to realize unmanned assembly line production
Variable Frequency Speed Regulation: Adjustable feeding and operating speed, matching different production capacity requirements
High Resource Utilization: Separated sesame hulls can be recycled as feed raw materials to increase additional benefits
Dual Raw Material Adaptation: Support peeling of white sesame and black sesame seeds

Technical Parameters (Standard Wet Model, Customizable)

Item	Parameter
Processing Capacity	200kg/h – 2000kg/h
Material Contact Material	304 Food-grade Stainless Steel
Dehulling Rate	≥95%
Kernel Breakage Rate	≤3%
Working Power	Customizable
Voltage	380V/50Hz, Support Custom Overseas Voltage
Main Structure	Soaking Tank, Peeling Host, Hull-Kernel Separation System, Dewatering Device

FAQ

Q1: Is sesame dehulling a necessary process for sesame oil production?

It is optional. Traditional small-ground sesame oil retains hulls to form unique burnt fragrance. However, for high-grade bottled sesame oil and export products, dehulling is a necessary process to remove bitterness and brighten oil color, greatly improving product market value.

Q2: How to choose between wet and dry dehulling machines?

For large-scale production, high oil quality requirements and sufficient water resources, choose the wet dehulling machine (best comprehensive effect). For water-scarce areas, small-batch processing and black sesame production, choose the dry dehulling machine (cost-effective and water-saving).

Q3: Do peeled sesame kernels need secondary drying before roasting?

No need. The wet dehulling machine is equipped with a professional centrifugal dewatering system. The discharged kernels have moderate moisture and can be directly transported to the sesame roasting machine for high-temperature roasting, saving processing time.

Q4: Can this equipment be used alone or only with the complete production line?

It supports independent single-machine sales and can also be combined with cleaning, roasting, pressing, filtering and refining equipment to form a complete sesame oil production line. We provide overall process design, factory layout and turnkey project services.

Q5: What is the use of separated sesame hulls?

The stripped sesame hulls can be recycled and used as high-quality feed additives, realizing full utilization of raw materials and improving the overall economic benefit of the production line.