Sesame Seed Cleaning and Grading Production Line

Sesame Seed Cleaning and Grading Production Line

The sesame seed cleaning and grading production line developed by Shijiazhuang Xinlu Technology Co., Ltd. is designed to process raw sesame seeds harvested from agricultural fields into clean, uniform, and specification-compliant products suitable for food processing, oil extraction, or export markets. Sesame seed processing presents unique technical challenges due to the seed’s small size, low bulk density, and sensitivity to mechanical stress. This production line addresses these challenges through a combination of precision equipment, controlled airflow, and flexible configuration.

1. Characteristics of Sesame Seed Raw Material

Sesame seeds typically contain a mixture of impurities after harvesting, including:

• Soil and sand particles

• Straw, stems, and husk fragments

• Immature or hollow seeds

• Broken kernels and dust

The small diameter and low weight of sesame seeds require equipment with fine screen tolerances and stable vibration control. Excessive airflow or vibration can result in seed loss, while insufficient separation leads to reduced purity.

2. Production Line Structure and Process Flow

2.1 Feeding and Flow Control

The line begins with a controlled feeding system equipped with adjustable gates and frequency-controlled conveyors. Stable feed rate is critical to ensure consistent separation efficiency in downstream equipment.

2.2 Pre-Cleaning Stage

A vibrating pre-cleaner removes large impurities such as stones, straw, and clods. Integrated aspiration systems extract dust and light foreign matter, reducing load on subsequent machines.

2.3 Fine Cleaning and Screening

Multi-layer vibrating screens with precision mesh sizes separate sesame seeds from fine impurities and off-size particles. Screen inclination, vibration amplitude, and frequency are adjustable to accommodate different seed varieties and moisture levels.

2.4 Gravity Separation

A gravity separator classifies sesame seeds based on density. Immature, damaged, or hollow seeds are separated from full-bodied seeds, improving overall uniformity and processing value.

2.5 Grading and Collection

Final grading divides sesame seeds into size or quality categories according to customer requirements. Seeds are discharged into buffer bins or connected directly to packaging systems.

3. Technical Design Features

• Fine-tolerance screening technology

• Adjustable air volume and vibration control

• Enclosed dust collection systems

• Modular equipment layout

• Gentle handling to preserve seed integrity

4. Application Scenarios

This production line is widely used in:

• Sesame seed cleaning plants

• Food ingredient processing facilities

• Oilseed preparation lines

• Export-oriented agricultural processing centers

Shijiazhuang Xinlu Technology Co., Ltd. provides customized layout design, capacity planning, and installation guidance to ensure efficient integration into existing facilities.