Semsam Seed Sieve

Raw sesame seeds often contain impurities such as soil, sand, metal fragments, and glass shards, which affect both taste and consumer health. A reliable Semsam Seed Sieve efficiently removes these elements, ensuring food safety, protecting downstream equipment, and maximizing oil yield.

What is a Semsam Seed Sieve?

A Semsam Seed Sieve is a precision industrial screening machine designed to grade and purify sesame seeds. The standard product sieve mesh ranges from 20 to 400 mesh, with customized production capacities: 200–500 kg/h for small-scale production, 500–1000 kg/h for medium-scale lines, and 1000–3500 kg/h for large commercial operations.

Sesame seed sieves are primarily categorized into circular vibrating screens, linear vibrating screens, and ultrasonic vibrating screens. Circular screens excel in fine screening and multi-material handling; linear screens provide high throughput for continuous grading; and ultrasonic screens effectively eliminate mesh clogging when screening fine or moisture-absorbing powders.

What are the types of Semsam Seed Sieve?

Based on operating principles and structural features, our sesame sieves are available in three main types tailored for different processing scales:

Circular Vibrating Screen (Rotary Sieve)

Causes materials to move in a 3D orbit, spreading sesame seeds for full mesh contact and separating impurities and broken particles. It supports both dry and wet screening. The ring-shaped clamp allows quick screen replacement without production downtime. Built with a small footprint for easy integration, it offers 1 to 5 layers, stainless steel or carbon steel construction, 2 to 500 mesh, 0.75kW to 4kW power, and handles 50 kg to 10 tons per hour.

Linear Vibrating Screen

Material moves in a straight line with a long path, ideal for continuous batch operations. The sealed structure prevents dust leakage. Features screen widths from 0.5 to 2 meters, lengths from 1 to 5 meters, stainless steel or high-manganese steel materials, 2 to 300 mesh, 1.5kW to 11kW power, and a capacity of 2 to 20 tons per hour.

Ultrasonic Vibrating Screen

Integrates an ultrasonic device into regular vibrating screens to prevent clogging. Subtle high-frequency vibrations break up clumped seeds and reduce friction, extending screen lifespan. Features 80 to 600 mesh (micron level) and an ultrasonic power supply from 50W to 1000W for lightweight, sticky, or statically charged seeds.

What are the advantages and application scenarios of Semsam Seed Sieve?

The Semsam Seed Sieve removes sand, dirt, weed seeds, and defective kernels, yielding uniform sesame seeds. Clean seeds enhance the taste and visual appeal of oil extraction, paste making, and roasting—resulting in clearer oil, smoother paste, and preventing seed burning during roasting. It also ensures smooth subsequent processes like washing, drying, and grinding without machine clogging, making it ideal for workshops and large lines alike.

It is widely used in homes and small oil mills to clean and grade sesame seeds prior to oil pressing or frying. It protects oil presses and boosts oil quality. Impurity content can be reduced from 2.3% down to below 0.1%, ensuring smoother oil extraction.

Technical Specifications, Model Parameters, and Mesh Guidelines

To help engineers and plant managers select the exact configuration matching their processing requirements, reference the standard model parameters and recommended mesh sizing charts below:

Table 1: Standard rotary vibration model specifications detailing dimensions, motor power ratings, layer configurations, and throughput rates.

Table 2: Practical mesh number and aperture selection guide matched against specific target impurity removal categories.

Working Principle and Structural Features of Semsam Seed Sieve

Semsam seed sieves use vibration to grade sesame seeds and remove impurities. The vibrating motor or exciter generates high-frequency, low-amplitude vibrations, causing the sieve box and screen to vibrate together. Sesame seeds jump and roll continuously on the sieve surface, reducing friction and separating into layers by size. Small broken seeds, dust, and dirt fall through the fixed apertures, while plump seeds and large stones remain on top and move forward. Multi-layer screens filter impurities layer by layer.

The Semsam Seed Sieve consists of a sieve box, a vibrating device, and sieve mesh. The steel-welded sieve box provides stable support. Sieve meshes are made of stainless steel wire mesh or perforated plates. Support springs or shock absorbers underneath reduce ground vibration impact. The vibrating device includes a motor and eccentric blocks, and the unit features a feed inlet, qualified sesame outlet, and impurity outlet.

The Role and Real-World Application of Semsam Seed Sieve in Processing

During processing, raw sesame seeds contain sand, straw, pebbles, unripe seeds, broken pieces, and light husks. Unremoved impurities damage machinery or deteriorate oil quality. The Semsam Seed Sieve effectively separates all these impurities, resulting in purer sesame seeds, enhanced safety, and improved appearance.

Multi-stage screening contaminant isolation workflow.

Raw contaminated sesame versus refined high-purity end product.

Product Live Demonstration: See the Semsam Seed Sieve in Action

Watch our vibrating screening equipment in operation. The high-frequency, low-amplitude vibration ensures rapid material movement, effectively separating impurities and grading particles with high precision.

Factory Live Action: Manufacturing and Production Workshop

As the core tool before oil pressing or frying, the Semsam seed sieve uses a fine, uniform screen and vibration to separate debris from complete sesame seeds.

Taking a family oil press as an example, pre-screening 500 grams of raw sesame seeds with a matching stainless steel seed screen takes 2-3 minutes, removing about 2% of fine impurities and broken seeds. This significantly reduces residue blockage, avoids oil press screw wear from gravel, ensures uniform frying, and improves oil yield and quality.

Frequently Asked Questions (FAQ) about Semsam Seed Sieve

What materials are used to build the Semsam Seed Sieve, and can they be customized?

Our sieves are standardly constructed with high-grade stainless steel (SUS304 or SUS316L) or carbon steel to meet food safety and industrial longevity requirements. We also support full customization for voltages, screen sizes, and layer counts.

How do I choose the correct mesh size for my sesame processing line?

It depends on your specific goals. Generally, screens above 2.0mm (<8 mesh) are used to remove large stones and straw, while 1.0–1.4mm (14–18 mesh) is ideal for removing small or broken seeds. You can also refer to our mesh selection guide above or contact our engineers for free custom calculations.

Can this machine handle wet sesame seeds after the washing process?

Yes! Our circular vibrating screens support both dry and wet screening applications. For high-moisture sticky seeds that tend to blind regular screens, we recommend our ultrasonic vibrating screen configuration.

How long does it take to replace the screen mesh during daily maintenance?

Thanks to the quick-release ring-clamp design on our rotary sieves, an operator can easily replace or inspect the screen mesh within 3 to 5 minutes without interrupting the entire workflow.