There are two main types of sieve shakers: mechanical sieve shakers and electromagnetic sieve shakers.
Mechanical sieve shakers utilize moving parts to oscillate, tap, and agitate the sieve stack to help particles find openings in the mesh. These machines are relatively easy to use and are often reflected in industry standards. Examples of mechanical sieve shakers include the Hosokawa Air Jet Sieve, which is compact and portable, and the Ro-Tap, which has a vertical circular motion and tapping movement.
Electromagnetic sieve shakers use a heavy-duty magnet and spring to create a three-dimensional elliptical motion. The magnet is electrically charged and discharged, causing rapid compression and decompression of the spring and generating ultrasonic vibrations. This unique 3D motion moves particles in a flat plane while jumping up and down simultaneously.
When selecting a sieve shaker, it is important to consider the characteristics of the sample material and the diameter of the sieves. Different materials respond differently to mechanical, vibratory, or sonic sieve shakers and shakers with or without tapping actions. Sieve shakers are designed to test a wide range of materials, from fine powders to coarse aggregates.
In addition to the types of sieve shakers, there are also accessories available to streamline the sieving process. These accessories include digital timers to set testing time and streamline the collection, weighing, and calculation of sieve fractions.
Overall, the choice of sieve shaker depends on the specific material being tested and the size of the particles. It is important to select a sieve shaker that is compatible with the characteristics of the sample material to enhance accuracy, repeatability, and efficiency in the sieving process.
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