Описание продукта
Accurate particle classification starts with the right screening equipment. Our Sieving and Screening Series covers the complete particle analysis and classification workflow — from compact lab test sieves for particle size distribution testing and quality control, to linear sieves, rotary vibrating sieves, and tumbler swing screens for high-throughput production screening. Whether you need to verify powder fineness, remove impurities and oversized particles, or grade materials into multiple fractions in a single pass, this series delivers precise, repeatable, and dust-free screening performance.
Engineered for industries where product consistency is non-negotiable — including food, pharmaceutical, chemical, plastic, and rubber manufacturing — these screening machines combine high classification accuracy with gentle material handling, low noise, and easy-to-clean designs. All machines are built to help you meet GMP, FDA, and occupational health standards while protecting product quality and operator safety.
Принцип работы
Lab Test Sieve
The operator stacks a set of test sieves with decreasing mesh sizes from top to bottom, places a weighed sample on the top sieve, and clamps the stack onto the sieve shaker. The shaker generates a three-dimensional motion — combined rotary vibration and vertical tapping — through an eccentric motor with adjustable speed and timing. Particles smaller than each mesh opening fall to the next level down, while oversized particles are retained on the corresponding sieve. After the preset screening time, each fraction is weighed to plot the particle size distribution curve, giving you precise, repeatable data for quality control, incoming material inspection, and process development.
Linear Sieve
Two vibrating motors are mounted at the two ends of the screen box, rotating in opposite directions. The superimposed forces produce a linear (straight-line) vibration perpendicular to the motor axes, which throws the material upward and forward along the screen surface. Material is fed at the inlet, moves forward in a straight line, and fine particles pass through the mesh openings to the lower outlet, while oversized particles and impurities are discharged from the upper outlet at the opposite end. Multi-deck configurations (up to 5 decks) separate the material into several fractions in a single pass. Amplitude and vibration frequency can be adjusted to match different materials and throughput requirements.
Rotary Vibrating Sieve
A vertical vibration motor with eccentric weights on the upper and lower ends generates a three-dimensional gyratory motion — combining horizontal circular, vertical, and tilt components. This compound motion causes the material to spread radially and evenly across the full screen surface. Fine particles pass through the mesh into the lower discharge, while coarse particles and impurities move along the screen surface and are discharged through the upper outlet. The screen is available with 1-3 decks for multi-fraction grading, and an optional ball tray or ultrasonic cleaning system prevents mesh blinding when handling fine or sticky powders.
Экран для качелей Tumbler
The drive unit produces a low-frequency, large-amplitude gyratory motion that closely mimics the manual sieving action of an experienced operator. Material enters through the feed inlet and moves slowly and evenly across the entire screen surface in a spiral path from the center to the periphery. Because the motion is gentle and the material remains in contact with the mesh openings for a longer time, the tumbler screen achieves high screening efficiency without damaging fragile or easily-broken materials. It handles large feed volumes with consistent accuracy, and multiple decks can be stacked to produce several particle grades simultaneously.
Характеристики машины
High Classification Accuracy
Precision screens with uniform mesh openings, combined with optimized vibration parameters (amplitude, frequency, and motion trajectory), deliver classification accuracy up to 95% or higher for most materials. Multi-deck configurations separate materials into several particle size fractions in a single pass.
Dust-Free & Hygienic Design
The fully enclosed structure with quick-release clamps and silicone sealing strips prevents dust leakage and cross-contamination. Contact parts are available in stainless steel 304/316L with mirror-polished surfaces, meeting GMP and food-grade requirements for pharmaceutical and food applications.
Gentle Material
Linear sieves and tumbler swing screens use low-impact motion patterns that minimize particle breakage and attrition — critical for friable materials, crystals, coated granules, and other easily damaged products. Gentle contact also extends mesh service life and reduces screen replacement frequency.
Fast Changeover & Low Maintenance
Tool-free screen frame replacement with quick-release clamps allows screen changes in minutes. Anti-bridging devices, ball trays, and optional ultrasonic cleaning systems prevent mesh blinding, while the few moving parts and high-quality bearings keep maintenance costs low and uptime high.
