Värähtelyseuloja

Värähtelyseuloja, known in English as vibratory screeners or vibrating sieves, are industrial machines used for separating solid materials by particle size. They employ a vibrating deck or screen mesh to agitate the material, causing finer particles to pass through the openings while larger particles remain on top. This process is fundamental in various industries, including mining, agriculture, pharmaceuticals, and food processing, for classifying, dewatering, and de-lumping materials.

The core principle behind vibratory screeners is the application of controlled vibrations. These vibrations can be generated through various mechanisms, such as unbalanced motors, eccentric weights, or electromagnetic exciters. The frequency and amplitude of the vibration are critical parameters that determine the screening efficiency and the throughput of the machine. Different types of motion, including circular, elliptical, or linear, can be achieved depending on the design and intended application.

Vibratory screeners are characterized by their screening surface, which can be made of woven wire mesh, perforated plates, or polyurethane panels, selected based on the size and type of material being screened. The design of the screener can vary from simple single-deck units to complex multi-deck machines capable of performing several separation steps simultaneously. Maintenance and cleaning are important aspects of operating vibratory screeners to ensure consistent performance and prevent clogging of the screen media.