Vibrating Screen Classifier

The RICHI SFJZ series vibrating screen classifier separates granular materials. Through a self-balancing vibration method, the machine achieves precise two-stage separation of large and small particles. This system helps your plant increase overall line capacity and finished product quality.

Product Overview

The SFJZ series vibrating screen classifier is core equipment in the pellet feed post-treatment section. Driven by a vibrating motor, it completes feed grading, fines removal, and secondary dust cleaning after cooling. This ensures that the outgoing feed has uniform particle sizes and remains clean and dust-free.

This equipment works widely in production lines for animal feed, biomass pellets, and organic fertilizer pellets. It improves the appearance of the finished product. Therefore, it is an essential choice for your pellet products to gain a market edge.

Capacity: 2–50 t/h

Power: 0.18–1.1 kW

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Technical Structure of the Vibrating Screen Classifier

Combining user-friendly design, precise screening performance, and a reliable body architecture, the RICHI vibrating screen serves as a key link. It guarantees finished pellet quality and stable, continuous plant operations.

User-Friendly Screen Box

The top cover of the screen box uses a large-angle inclined sealing structure. This structure fits the natural flow of materials and maximizes the internal screening space. We integrated circular transparent observation windows on the top cover, so operators can monitor material flow and screen conditions in real time without dismantling the equipment.

With knob-type quick-opening fasteners around the sides, your workers can quickly disassemble and assemble the unit. Whether for routine cleaning or screen replacement, this design improves the daily maintenance efficiency of the factory.

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Stepped Inlet

The white opening at the highest point of the vibrating screen classifier is the inlet. This inlet uses a unique stepped buffer design, which slows down the impact force of granular materials falling from the previous stage. As a result, it prevents pellets from breaking during impact.

An internal material distributor uses gravity to spread materials evenly across the screen width, completely avoiding local accumulation. This feature protects pellet integrity and ensures efficient use of the entire screen mesh, increasing screening capacity per unit of time.

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Shock-Absorbing Springs

High-strength metal shock-absorbing springs sit symmetrically at the front and back between the white screen box and the green base. Because the equipment requires intense vibration to sort pellets during operation, these springs carry the vital task of isolating the vibration force.

They absorb and buffer most of the dynamic inertial force transmitted from the screen box. Therefore, they stop vibration waves from reaching the workshop floor or steel structure platforms. This lowers the running noise of the vibrating screen classifier and protects the foundation of your pellet production line.

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Multi-Route Outlets

The bottom design leaves ample operating space and features two independent discharge channels. Qualified pellets and unqualified materials discharge automatically through their respective channels.

This precise automatic diversion design connects with subsequent automatic packaging or material recycling systems. Consequently, it helps your plant achieve automated, closed-loop production.

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Screen Box

Stepped Inlet

Springs

Outlets

Technical Parameters

The following technical parameters come from stable outputs of the vibrating screen classifier in complete production lines. They outline the power and processing capacity of the vibratory screeners for sale.

Model	Power (kW)	Capacity (t/h)	Screen Angle
*SFJZ631C/2C**	0.18	2–3	19°
SFJZ80×1C/2C	0.18	5–10	19°
SFJZ100×1C/2C	0.25	10–20	19°
SFJZ125×1C/2C	0.55*2	20–30	19°
SFJZ150×2C	0.55*2	40–50	19°

Operational Principles of Vibrating Screen Classifier

The efficient operation of the SFJZ series comes from combining self-balancing vibration technology with spatial physical separation principles. The equipment vibrates at high frequencies under eco-friendly, oil-free lubrication conditions, letting materials automatically stratify by particle size during movement.

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Buffered Feeding and Uniform Distribution

Granular materials flowing from the cooling section fall into the upper stepped inlet. The buffer structure of the inlet first slows down the falling impact force to prevent pellet breakage.

After that, the internal distribution device of vibrating screen classifier uses material weight and initial kinetic energy to spread accumulated pellets evenly along the screen width. This creates a material layer of uniform thickness as soon as it enters the screen body, setting a foundation for subsequent pellet screening.

Vibration-Induced Screening

Driven by the exciting force of the internal vibrating motor, the screen body drives the screen mesh to perform continuous reciprocating vibration. As the uniform material layer slides forward, the vibration force of the screen surface forces an automatic grading phenomenon within the material.

Small, dense fines and small particles sink quickly, touch the screen surface, and leak through the screen holes. Meanwhile, qualified finished pellets float on the surface of the material layer and continue to jump and roll forward on the screen mesh.

Multi-Stage Co-Current Discharge

Under the continuous push of the vibration force, the material completes a precise two-stage separation of large and small fractions inside the screen box:

Standard finished pellets stay above the screen mesh and slide out through the streamlined outlet into the next packaging stage. Unqualified dust and small particles leak through the screen holes to the bottom, discharging through an independent outlet for recycling and re-pelletizing.

The vibrating screen classifier outlet uses a streamlined design, so discharged materials do not accumulate. In addition, this prevents cross-contamination between different batches of materials.

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Core Advantages of Vibrating Screen Classifier

Beyond the excellent performance of the vibratory screen for sale, we focus on the hidden costs and operational experience in your daily production. The following five advantages will bring you long-term value that exceeds expectations.

Self-Balancing Stable Drive

The core drive of this equipment uses an advanced self-balancing vibration method, removing the complex mechanical transmission structure of traditional vibrating screens. Through a precisely allocated exciting force, the screen body produces high-frequency, co-current reciprocating vibration.

This allows materials to quickly form automatic layers of large and small particles on the screen surface.

This drive method increases material penetration and grading efficiency. Furthermore, it ensures a compact size and stable movement under high-speed operation, reducing dynamic impact on the plant’s steel structure.

Streamlined Non-Accumulating Discharge

To solve the industry problem of residual material during batch switches, we designed a streamlined structure inside the discharge outlet. Both large finished pellets and screened dust slide out according to fluid dynamics. There are no dead angles or material blocking zones inside.

The feature where materials come and go without accumulating prevents cross-contamination between different product varieties. This protects the purity of the finished product and allows your factory to meet modern production hygiene and environmental audit standards.

Oil-Free Eco-Friendly Design

Traditional vibrating equipment relies on lubricating oil for long periods, and aging seals can easily lead to oil leaks. If grease contaminates finished pellets, it can cause the scrap of entire batches. For this reason, the vibration source system of the vibrating screen classifier uses a maintenance-free design that needs no oil lubrication.

This eliminates grease leakage risks and ensures a clean production environment. Additionally, it saves you long-term oil purchasing and manual maintenance costs, giving your finished pellets a green quality advantage in the market.

Quick Screen Clamping Mechanism

The equipment features a convenient, quick-opening screen clamping mechanism. Operators can loosen, pull out, and lock the screen in a short time using quick-opening knobs without complex tools.

This quick-screen-change design cuts traditional shutdown maintenance time by more than 80%. It improves the continuous operation rate of the production line, making multi-specification pellet switching efficient.

Rugged, Sealed, and Low Consumption

The equipment uses thick steel overall welding and high-toughness shock-absorbing springs, giving the structure strong rigidity and a long service life. The fully sealed screen box design and rugged inclined top cover lock secondary dust inside the equipment. Combined with a tail air outlet, it achieves dust-free operations.

Because there are very few wearing parts and no daily oiling is needed, the later operation and maintenance costs of the equipment are minimal. This makes it a cost-effective choice for the post-treatment section of pellet production lines.

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Global Case Study

Tested by many factories worldwide, the SFJZ series vibrating screen classifier shows excellent anti-blocking ability and grading accuracy when handling complex materials. These real cases prove its stable, reliable, and durable quality under changing working conditions.

Biomass Wood Pellet Production Line in Iceland

To ensure that outgoing wood pellets comply with European ENplus environmental standards, an Icelandic customer introduced the RICHI SFJZ80×2C (double-deck) vibrating screen after pellet cooling. The equipment blocked unqualified large pieces and stripped dust from pellet surfaces with stable, high-frequency vibration, reaching a screening accuracy of over 98%.

Fines were guided back to the pellet bin for secondary pressing. This closed-loop treatment kept the finished product surface smooth and dust-free while helping the customer increase overall line production efficiency by 20%.

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Hardwood Biomass Pellet Project in Australia

Handling high-density hardwood pellets (like eucalyptus) brings challenges because of tough fibers and clumping dust. An Australian customer selected our SFJZ100×1C single-deck vibrating screen classifier. This model processes 10–20 tons of finished products per hour stably.

Its built-in bouncing ball anti-blocking device broke up cohesive fiber dust, achieving a 99% screening rate. With this precise control, the finished pellet dust content dropped below 1%, and the packaging yield jumped from 85% to 96%, reducing rework costs.

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Animal Feed Processing Plant in Kenya

In a livestock and poultry pellet feed factory in Kenya, the SFJZ80×2C double-deck screen handled the final quality control before packaging. Using a self-balancing vibration method, the equipment intercepted upper-layer impurities and large clumps, while completely stripping dust through the bottom fine mesh to ensure uniform feed particle size.

This improvement increased product palatability and water resistance. Thanks to stable quality, it helped the customer quickly open up the local market for high-end farmers.

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Organic Fertilizer Pellet Production Line in Brazil

A Brazilian customer ran an organic fertilizer production line with a capacity of 25 t/h. We deployed the SFJZ125×1C vibrating screen, configured with dual vibrating motor drives to provide strong power at a total of 1.1 kW. Qualified fertilizer pellets were delivered smoothly to the automatic packaging machine, while fine powder discharged through the streamlined outlet for re-granulation.

The vibrating screen classifier achieved a screening efficiency of 97%. The customer reported that the final fertilizer pellets were round and possessed a good commercial appearance.

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Application Scope of Vibrating Screen Classifier

This screening auxiliary equipment focuses on core needs like finished product dust removal, size grading, and quality control. It adapts to production scenarios with different output scales and material characteristics.

Industry Applications

Standalone Operation: Ideal for modern farms and small-to-medium breeding operations, this unit connects directly to small pellet mills for rapid, on-site dust removal, ensuring feed is clean before it reaches the trough.

Pellet Processing Plant: As a final quality checkpoint before packaging, the classifier effectively removes dust and unqualified clumps, instantly elevating product grades for biomass and organic fertilizer producers.

Production Line Integration: For large, multi-variety production lines, the classifier integrates seamlessly as a key node, enabling efficient, continuous, and intelligent operations.

Animal Feed

Livestock and Poultry Feed: Suitable for conventional livestock and poultry pellet feed lines. Through precise screening, it reduces the finished pellet dust content to under 1%, preventing animals from becoming picky eaters.

Aqua Feed: Suitable for high-end aquatic extruded and pellet feed lines. It uses high-frequency, low-amplitude stable vibration to strip small debris while protecting brittle extruded feed from breaking.

Pet Food: Suitable for cat food, dog food, and special breeding feed lines like bird and mink feed. The screen clamping mechanism supports fast screen changes to match different screening specifications.

Processing Materials

High-Fiber Materials: Suitable for biomass pellets pressed from eucalyptus hardwood sawdust, bamboo shavings, and crop straws. The built-in bouncing ball anti-blocking device breaks the bridging effect of fiber dust.

Sticky Materials: Suitable for organic fertilizer raw materials that easily absorb moisture and soften, such as fermented livestock manure and humic acid. The streamlined outlet, combined with self-balancing vibration, avoids material sticking.

Brittle Materials: Suitable for fragile pellets sprayed with high proportions of fat or expanded by high heat. The self-balancing vibration system gives the materials physical buffer protection.

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Buyer’s Guide & Support Center

Below are answers to common questions about the vibrating screens we sell, covering model selection, operation, and maintenance.

Is this What is the hourly capacity of the SFJZ vibrating screen classifier? How do I choose a model for biomass or organic fertilizer?automated belt drying equipment suitable for beginners or new operators to manage?

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The whole series covers processing capacities of 2–50 t/h. Taking the SFJZ100 as an example, when processing high-density feed or hardwood pellets, the stable capacity reaches 10–20 t/h. For biomass (like straw) and organic fertilizer with low fluidity, we will expand the screen area based on actual density and moisture. This prevents material clogging and capacity bottlenecks.

Is it easy to change the screen of the vibrating screener? How long does it take?

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Well, it is simple. The equipment features a quick-opening screen clamping mechanism and external hand-screwed nuts. Operators do not need professional tools or advanced skills. A single person can complete the loop of loosening, pulling out the old mesh, pushing in the new mesh, and locking it within 5–10 minutes, reducing downtime.

Does this self-balancing vibration design need regular oil lubrication? How do I maintain it?

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It does not need oil lubrication. The self-balancing vibration design has no complex transmission parts inside. This removes the risk of oil leakage caused by aging seals in traditional motors, preventing grease from contaminating high-value pellets. The equipment is virtually maintenance-free. You only need a quick visual check on the shock-absorbing springs and screen tension monthly.

How efficient is this equipment at removing dust and fines? Can it pass environmental standards?

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The finished product screening rate reaches 98%–99%, and the factory’s finished product dust content stays below 1%–3%. This complies with strict European ENplus biomass pellet standards. The equipment uses a fully enclosed box design with a special suction inlet. When connected to the workshop dust collection system, it creates a 100% dust-free workshop operation.

Can this machine separate pellets into three specifications (large, medium, small), or only two types?

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That depends on your configuration. The “1C” model is a single-deck screen that splits material into two: qualified pellets (large) and dust fines (small). The “2C” model is a double-deck screen where the top layer stops oversized materials or clumps, the middle layer collects qualified finished products, and the bottom layer collects fine powder. The modular design lets you switch by changing the internal screen frame.

Will the vibration of the vibrating screen classifier affect the plant’s steel structure?

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No, it will not. The self-balancing vibration principle allows the exciting forces of the dual motors to cancel each other out laterally, producing only a linear thrust along the screen surface. Meanwhile, the screen box rests on 4 heavy-duty isolation springs that absorb over 95% of dynamic vibration. The operating noise stays below 75 dB, protecting the plant’s steel structure from vibration fatigue.