rotary screening machine

The RICHI SFJH Series rotary screening machine is a screening device used primarily to sort feed pellets and grain particles. This machine uses a horizontal rotary motion to sort materials with high precision and stability, making it ideal for long-term industrial use.

Product Overview

The rotary screening machine uses a motor to drive the screen box in a horizontal circular motion, separating materials of different sizes. The internal screens are typically made of durable stainless steel. Mesh sizes can be customized to handle wheat, corn, finished feed pellets, or oilseeds.

The machine features a fully enclosed design with excellent sealing, ensuring quiet operation and preventing dust leaks. It can work as a standalone unit or within an automated production line.

Capacity: 3-20 T/H

Power: 1.5-5.5 KW

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Technical Structure of Rotary Screening Machine

The rotary screener combines a stable structure, precise screening performance, and durable components to support efficient and continuous material classification in modern feed and grain processing lines.

Screen Box

The screen box forms the core structure of the machine and supports stable screening performance during operation. Multiple screen layers separate materials efficiently according to particle size requirements. The enclosed structure helps reduce dust leakage and keeps the working environment cleaner.

Its strong frame design also improves durability during long-term continuous production. This structure ensures consistent screening accuracy even under heavy load conditions.

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Suspension Cable

The suspension cables connect the screen box and main frame while supporting smooth machine movement. They reduce vibration transfer and help the equipment maintain balanced circular motion during operation. The flexible support structure improves running stability and minimizes unnecessary mechanical stress.

This design also helps extend the service life of key machine components. It ensures that the rotary screening machine still runs smoothly even if the material flow rate changes

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Transmission Device

The transmission device transfers power to the screen box through coordinated mechanical movement. Components such as pulleys and eccentric mechanisms generate stable horizontal circular motion for screening.

The system operates smoothly and provides reliable power output during continuous production. Its transmission structure helps reduce vibration and energy consumption. This ensures stable rotary screening machine performance with minimal maintenance requirements.

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Elastic Support Plate

The elastic support plates provide additional support for the screen box during high-speed operation. They absorb vibration and reduce the impact generated by continuous material screening movement.

This structure improves operational stability and lowers noise levels inside the production area. The support plates also help protect internal parts from excessive wear over time. They contribute to smoother and more controlled equipment operation.

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Motor

The motor supplies stable driving power for the entire screening and classification process. Different motor configurations match the capacity requirements of various rotary screening machine models and applications.

The system maintains reliable performance while supporting long-term continuous industrial operation. Its energy-efficient design also helps reduce overall operating and maintenance costs. It ensures consistent output even during extended working cycles.

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Screen Box

Suspension

Transmission

Support Plate

Motor

rotary screening machine suspension cable

Technical Parameters

The following technical parameters outline the power and processing capacity of our rotary sieve series. Designed for high‑efficiency screening and grading, these rotary screening machines ensure optimal product quality across various granular materials.

Model	Power(kW)	Capacity(t/h)
*SFJH801c**	1.5	3-6
*SFJH802c**	1.5	3-6
*SFJH1001c**	2.2	4-8
*SFJH1002c**	2.2	4-8
*SFJH1252c**	4	8-15
*SFJH1253c**	4	8-15
*SFJH1502c**	5.5	8-15

Operational Principles of Rotary Screening Machine

The rotating sifter is high-efficiency separation equipment designed to grade and classify granular materials accurately. This machine combines robust vibration mechanics with customizable screen layers to ensure optimal product quality and meet diverse professional production needs.

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Even Material Feeding and Distribution

Raw materials are introduced into the classifier through the top inlet. A specialized distribution mechanism ensures the material spreads evenly across the entire width of the upper screen surface. This uniform feeding prevents material buildup, reduces localized wear on the screen, and maximizes the effective screening area right from the start.

Vibration Mechanics and Stratification

The screen box of the rotary screening machine is driven by vibration motors to generate continuous and controlled motion. This vibration forces the material bed to loosen and jump forward along the screen surface. During this dynamic process, smaller particles continuously fall through the gaps between larger particles to reach the mesh surface, achieving rapid material stratification.

Precise Classification and Discharging

As the stratified materials travel along the screen decks, particles smaller than the mesh openings pass through to the lower layers. Meanwhile, oversized particles remain on the upper deck. Each separated grade of material is efficiently directed to its corresponding discharge outlet, completing the classification process and delivering highly consistent end products.

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Key Advantages of Rotary Screening Machine

The vibrating screener offers clear advantages in screening accuracy, stability, material adaptability, and operating costs. It is a highly cost-effective choice for production lines.

High Precision Quality

The horizontal rotary motion spreads material evenly across the screen surface to prevent clumping or aggregation. Qualified pellets pass through the mesh smoothly, while large particles and fines are effectively separated.

This process ensures uniform pellet size and a stable yield ready for direct packaging. As a result, product consistency is guaranteed, reducing rejects and enhancing overall production efficiency. Even with variable feed rates, the machine maintains steady classification accuracy.

This reliability makes it ideal for continuous, high-volume industrial operations.

Low Noise Good Comfort

By utilizing suspended supports and belt drives, the machine generates significantly less vibration and noise than traditional rotary screening machines. This design minimizes disturbance to nearby workstations and creates a quieter, more pleasant operating environment.

It fully meets modern factory requirements for environmental safety and occupational health. Workers benefit from reduced fatigue and improved focus throughout long shifts. Lower noise levels also simplify compliance with local workplace regulations. Ultimately, this contributes to higher employee satisfaction and retention.

No Clogging or Breakage

The gentle rotary motion avoids crushing or damaging the material and prevents particles from becoming stuck in the mesh openings.

Unlike aggressive screening methods, it preserves the integrity of each pellet or fiber. It effectively screens hard pellets, soft pellets, and fibrous materials without compromising throughput. This extends screen life and maintains consistent performance even with challenging feed stocks. Delicate products retain their original shape and size for better downstream processing.

Reduced clogging also means fewer manual cleaning stops, boosting overall operational efficiency.

Simple Structure Maintenance

The rotary screening machine features few wearing parts, and replacing the screen is a quick, and tool-friendly operation. Daily use requires only basic lubrication and routine cleaning to keep it running smoothly and optimally.

This simple design reduces downtime and lowers overall production costs. Maintenance staff can perform inspections and repairs swiftly, ensuring high uptime and long-term reliability. Fewer components also mean lower spare parts inventory and simpler training for operators.

As a result, total cost of ownership remains significantly and demonstrably lower than complex screening systems.

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Global Case Study

The rotary screening machine is used worldwide, solving problems related to inaccurate screening and material clogging. These real-world applications prove the machine’s high precision, stable performance, and reliable operation across different materials and production conditions.

Poultry Feed Mill in Thailand

This factory produces 100,000 tons annually and previously struggled with inconsistent pellet sizes. We installed the SFJH125×2C to upgrade their screening line. The rotary screen separator machine now delivers a yield rate of over 98% with minimal fines. It also speeds up the packaging process by maintaining steady material flow. The customer reports fewer rejects and higher overall efficiency.

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Alfalfa Pellet Line in Germany

The customer faced severe clogging when screening straw and alfalfa pellets. We provided the SFJH150×2C to solve this problem effectively. The rotary screening machine now runs continuously 24/7 without any clogging or material damage. It handles fibrous materials gently while maintaining high and stable throughput. The entire line operates smoothly with minimal manual cleaning stops required.

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Aquatic Feed Plant in Brazil

Aquatic feed requires a dust-free, neat appearance to remain competitive in the market. The SFJH100×2C precisely separates qualified pellets from fines in this large plant. The final product is clean and uniform, meeting strict quality and safety standards. This helps the customer gain a strong edge in the demanding aquatic feed market. The machine runs quietly and requires very little maintenance over time.

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Grain Processor in India

This company needed to process large volumes of wheat and corn very efficiently. The SFJH150×2C handles high capacities while removing impurities with great ease. It simplifies the entire screening process and reduces both labor and energy costs. As a result, the customer has increased their profits significantly year after year. The rotary screening machine continues to run reliably even during peak harvest seasons without fail.

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Application Scope of Rotary Screening Machine

This set of screening auxiliary equipment plays a vital role in grading and cleaning materials for various industrial lines.This machine uses a unique rotary motion to separate different sizes of particles with high accuracy and efficiency.

Industry Applications

Professional Feed Plants: Used for grading finished pellets in poultry and aquatic feed lines. This system ensures every product meets the exact size requirements for the market.

Biomass Production Lines: Fits the final screening section of industrial wood and straw pellet lines. It works to separate high-quality pellets from broken pieces and fine dust.

Grain Processing Units: Provides professional cleaning and re-screening for materials in large grain plants. This model is ideal for removing impurities before the next production stage.

Animal Nutrition

Livestock & Poultry Feed: Grades feed pellets for common farm animals like pigs, chickens, and ducks. It is widely used in complete feed lines to produce specific sizes for young animals.

Ruminant & Aquatic Feed: Manages screening for cattle and sheep feed, as well as sinking fish feed. This application ensures aquatic products meet the standards for water stability.

Specialty Pet Food: Used in the delicate grading process for premium cat and dog food pellets. The rotary screening machine effectively removes small debris to keep the final products clean and consistent.

Processing Materials

Standard Energy Grains: Processes conventional raw plant materials like corn, wheat, and soybean meal. The screen handles these materials during the initial cleaning or final grading stages.

Biomass & Fiber Materials: Filters particles from organic materials like dry straw, grass, and wood pellets. It is built to handle abrasive materials in high-intensity pellet manufacturing plants.

Industrial Granules: Supports precise screening for industrial materials like chemicals or granulated sugar. This application extends to many non-feed industries requiring accurate particle separation.

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Buyer’s Guide & Support Center

All your questions are answered here! Below are answers to frequently asked questions about the rotary sifter, providing you with comprehensive answers.

What is a rotary screening machine used for and how does it work?

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It is primarily used for grading and screening raw materials or finished products in industries like feed, grain, and food processing. It utilizes a combination of circular, oval, and linear motions, along with a specific inclination angle, to effectively separate materials based on particle size through a multi-layer screening process.

How energy-efficient is this grading sieves compared to traditional models?

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This equipment is highly energy-efficient because it uses an optimized drive system that requires lower motor power to achieve a higher output. By reducing mechanical friction and using a streamlined balance weight structure, it consumes significantly less electricity than standard vibrating screens with the same processing capacity.

How many screen layers are supported, and can the screen size be adjusted?

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It supports between 1 to 3 layers of screens, allowing for multi-stage grading in a single pass. The screen size is fully customizable and easy to adjust; our quick-pressure structure allows a single operator to quickly replace the mesh through the maintenance door, minimizing production downtime.

Does the classifier require frequent maintenance, and what are the wearing parts?

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No, the machine is designed for low maintenance with long-lasting components. The primary wearing parts are the screens, drive belts, and elastic supports, all of which are made from high-durability materials to ensure a long service life. Regular inspections are simple and do not require specialized tools, keeping operational costs low.

What types of materials can it handle? Can it be integrated into a production line?

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It is versatile enough to handle both granular pellets and fine powders without clogging. The machine is designed for seamless integration into existing production lines, and we can customize the direction of inlets and outlets as well as the overall frame height to fit your specific factory layout perfectly.

What safety and environmental features are included to prevent dust leakage?

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The rotary screening machine features a fully enclosed box structure with high-quality seals to prevent dust from escaping into the workspace. It also includes a specialized top suction interface that can be connected to a central dust removal system, ensuring a clean, dust-free production environment that complies with safety regulations.