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Polyethylene (PE) pellets are widely used across industries such as packaging, construction, agriculture, and mechanical manufacturing. Different applications require strict control of particle size distribution and purity. To ensure consistent product quality, PE pellets must be accurately graded after production.
The rotary vibrating screen has become a highly efficient and reliable solution for PE pellet classification due to its precision, flexibility, and automation compatibility.
The rotary vibrating screen uses a vertical vibration motor as the excitation source. Eccentric weights installed at the top and bottom of the motor generate a three-dimensional vibration motion (horizontal, vertical, and inclined). This motion is transmitted to the screen surface, enabling efficient particle separation.
By adjusting the phase angle of the eccentric weights, the material movement trajectory on the screen can be precisely controlled. PE pellets form a spiral motion pattern on the mesh surface:
Fine particles pass through the screen and are discharged automatically
Oversized particles remain on the upper layer and exit separately
Bounce balls continuously clean the mesh to prevent clogging
This design ensures stable screening performance and consistent grading accuracy.
1. Compact structure, lightweight design, easy installation
2. Adjustable discharge direction for flexible production layout
3. High screening efficiency for powder and granule materials
4. Mesh sizes up to 500 mesh (28 μm) for fine classification
5 . Quick screen replacement (3–5 minutes)
6. Stainless steel contact parts for durability and hygiene
7. Single-layer or multi-layer configuration available
8. A fully enclosed structure prevents dust leakage
These features make the equipment suitable for both standalone operation and automated production lines.
High Screening Efficiency
The three-dimensional vibration motion enables rapid material dispersion and fast separation, significantly improving production throughput and reducing manual sorting costs.
Precise Particle Size Control
The equipment accurately separates pellets into different size fractions, ensuring uniform product quality and meeting downstream processing requirements.
Automation Integration
The rotary vibrating screen can be integrated with conveying, feeding, and packaging systems to form a continuous automated production line.
Low Maintenance & Long Service Life
The simple structure, durable components, and anti-clogging design minimize downtime and maintenance costs.
Customizable for Different Materials
Screen diameter, layer number, mesh size, and material configuration can be customized according to PE pellet characteristics and capacity requirements.
During PE pellet processing, the rotary vibrating screen is commonly used for primary and final particle size grading. The system separates pellets into multiple size ranges based on customer specifications.
Typical process flow:
Feeding → Screening → Size Classification → Packaging or Further Processing
This process ensures consistent particle distribution, improves product value, and enhances production efficiency.
In modern polymer processing, stable particle size distribution directly affects product performance, molding efficiency, and market competitiveness. A high-precision screening system is therefore essential for quality control.
Rotary vibrating screens provide:
Stable grading accuracy
Continuous operation capability
Adaptability to different production scales
Reliable performance in long-term industrial use
For PE pellet manufacturers seeking efficient classification and automated production, this equipment is an indispensable part of the processing line.
As a direct factory specializing in screening and conveying equipment, SanYuantang Machinery provides customized rotary vibrating screen solutions for plastic, chemical, food, and mineral processing industries worldwide.
Custom configurations are available based on:
Capacity requirements
Pellet size distribution
Production layout
Automation level
