Screening Machine

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Screening Machine

Screening machine is a mechanical equipment that uses physical separation technology to classify, remove impurities or accurately sort granular, powdery or block materials. Its core function is to separate materials into products of different specifications or purity according to their particle size, shape, density and other characteristics.

Mesh size:	2-500 mesh
Capacity:	100-3300kg/h
Number of layers:	1-5 layers
motor power:	0.75-5.5kW
Materials:	Plastic, carbon steel, stainless steel
Customization:	Extended discharge port, raised base cylinder, etc.
Applicable materials:	Powders, granules, viscous substances, liquids

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What is a Screening Machine? Industrial Selection & Application Guide [2026 Updated]

A screening machine is a vital industrial device that uses precision sieves to separate materials and remove impurities, adaptable to various material grading scenarios. By utilizing controlled vibration, these machines efficiently categorize powders, granules, and slurries. You can choose different mesh sizes of sieves to meet exact screening requirements, ranging from coarse separation to ultra-fine powder processing.

Coarse screening typically utilizes 4-20 mesh screens to remove large particles; 20-100 mesh screens are optimized for medium particle size grading; while 100-500 mesh screens (or higher) are designed to sieve finer powders. With a vibration frequency ranging from 800 to 3000 rpm and adjustable amplitude, our machines offer processing capacities from 100 kg to 20 tons per hour to suit diverse production volumes.

Need a professional selection recommendation? Contact our technical team for a customized screening solution today.

Types of Industrial Screening Machines

Screening machines serve as indispensable pretreatment equipment in the production of Chinese medicinal materials and granular preparations. They effectively remove impurities (such as sand, fiber, or powder) to ensure finished product quality. Common types include:

Type	Swing screen	Linear vibrating screen	Rotary screen
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Principle	Three-dimensional artificial swing motion, low frequency and high amplitude	High frequency vibration motor drive, vertical motion trajectory	Horizontal rotary centrifugal screening
Advantages	Screening accuracy ≥95%, mesh range 20-200 mesh, processing capacity 300-1000kg/h, suitable for sticky/light materials	Large processing capacity (up to 5t/h), high screening efficiency, but high noise (≥80dB)	Fully enclosed design, anti-cross contamination, but the screen replacement is more complicated
Application	Medium Medicinal slices, granules, ultrafine powders	Classification of bulk Chinese medicinal materials after coarse crushing	Refining of toxic medicinal materials and precious fine medicinal materials

Type	Screening accuracy	Applicable mesh	Noise	Energy consumption	Maintenance cycle
Swing screen	≥95%	20-200	≤75dB	1.5kW	3 months
Vibrating screen	85-90%	10-100	≥80dB	3kW	1 month
Rotary screen	90-95%	30-150	≤65dB	2.2kW	6 months

Advanced Features of Screening Machines

Our screening machines are engineered to classify materials based on particle size, shape, and density. They handle dry or wet, light or heavy, fragile or sticky materials with minimal risk of breakage or clogging, preserving material integrity. By adjusting the vibration amplitude and screen angle, you can significantly enhance efficiency. Our equipment requires fewer parts and less maintenance, reducing operational costs while adapting to granular, powdery, and flaky material types.

Technical Demonstration

Watch how our screening equipment operates in real-world scenarios to ensure high-efficiency separation.

Technical Parameters of Screening Machine

Technical parameters	Unit	Typical value range (for reference only)	Remarks
Processing capacity (output)	t/h or m³/h	1-500+	Varies according to material density and equipment model
Number of screening layers	Layers	1-5+	Determines the number of particle sizes that can be separated at the same time
Screen surface size	square meters	0.5-50+	Effective screening area of a single layer of screen
Screen hole size (aperture)	mm or μm	0.02-100+	Choose according to the particle size range of the material to be separated
Screening efficiency	%	80-99+	Refers to the proportion of materials that meet the particle size requirements and are effectively separated, which is affected by many factors
Vibration frequency	Hz	10-50+	Affects the movement speed and separation effect of materials on the screen surface, and different types of screen machines vary greatly
Amplitude	mm	1-10+	Affects the throwing height and looseness of materials, and different types of screen machines vary greatly
Applicable materials		Various	For example: sand, mineral powder, chemical raw materials, grain, food, etc., specific models are targeted

Working Principle and Structure

Screening machines utilize vibration, rotation, and shaking to move material across the screen surface, dividing it based on hole size. Larger materials remain on top, while smaller particles pass through.

Working Principle Diagram

The system is supported by a stable frame. The drive unit, typically a motor driving an eccentric block, generates the necessary vibration. Multi-layered screen boxes allow for simultaneous multi-stage grading, while shock-absorbing springs ensure minimal environmental impact.

Screening Machine Structure

Recommended Mesh Sizes by Application

Mesh number	Application field	Applicable particle size range
20 mesh	Coarse particle screening	0.85mm - 1.0mm
40 mesh	Building materials, chemicals	0.42mm - 0.5mm
60 mesh	Food, medicine	0.25mm - 0.3mm
80 mesh	Cosmetics, coatings	0.18mm - 0.2mm
100 mesh	Fine chemicals, plastics	0.15mm - 0.18mm
200 mesh	Ultrafine screening	0.075mm - 0.1mm
300 mesh	Nano materials, special powders	0.05mm - 0.075mm

Applicable Materials and Industry Use Cases

Screening machines are versatile tools for separation, impurity removal, and dehydration. Powdered materials include resins, flour, starch, cement, and minerals. Granular materials include plastic pellets, grains, catalysts, and feed. Slurries are processed for solid-liquid separation in paints and food production.

Applicable Materials

Industries served include Mining (ore grading), Agriculture (seed/feed processing), Recycling (construction waste), Food (consistent quality control), and Pharmaceuticals (particle size regulation).

Industry Applications

Screening Machine Price & Customization

Pricing varies based on complexity: Laboratory/small-batch units range from $1,000–$3,000. Industrial vibrating or drum screens cost $3,000–$8,000. Large-scale automated systems, including probability screens or air classifiers, start at $10,000. Note: Stainless steel options are available for higher hygiene standards.

Screening Machine Options

Expert Manufacturer: DaHan Vibration Machinery

DaHan Vibration Machinery offers both standard and custom-designed screening solutions, including extended discharge ports, mobile wheels, and specialized feed inlets. We are committed to providing one-stop machinery selection and maintenance services.

DaHan Manufacturing

Frequently Asked Questions about Screening Machines

What is a screening machine used for?

A screening machine is used to separate materials, remove impurities, and grade particles by size, shape, and density. It is widely applied in industries such as mining, chemicals, food processing, agriculture, and pharmaceuticals.

How do I choose the right mesh size for my material?

Mesh size selection depends on your separation goals: coarse screening uses 4-20 mesh for large particles, medium grading uses 20-100 mesh, and fine powders require 100-500 mesh or higher.

What are the differences between a swing screen and a linear vibrating screen?

A swing screen features a three-dimensional artificial swing motion, offering high accuracy (≥95%) for sticky or light materials with low noise. A linear vibrating screen uses a high-frequency vibration motor for large processing capacities (up to 5t/h), though it operates at higher noise levels (≥80dB).

What is the price range of industrial screening machines?

Prices typically range from $1,000 to $3,000 for small laboratory units, $3,000 to $8,000 for standard industrial-grade vibrating or drum screens, and start at $10,000 for large, fully automated, or customized systems.

Screening machines are essential separation tools for almost every industry involving solid particles or liquid purification. Contact us today to discuss your specific process requirements and get a professional quote.