This section provides an overview for vibrating sieve machines as well as their applications and principles. Also, please take a look at the list of 8 vibrating sieve machine manufacturers and their company rankings.
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A vibrating sieve machine is a device used to separate granular materials (materials on granules) according to their size by vibrating them on a sieve (screen) with a certain mesh size.
Vibrating sieves (sifters) are used to sort grains such as rice and wheat, pellets and flakes of various resin materials, gravel, and ores.
A vibrating sieve machine can be used to add value and improve the quality of granular products by sorting materials according to their grain size within a specified range, making products with separate model numbers, and removing foreign matter.
Vibrating sieve machines are mainly used for three main applications: sculpting to remove coarse particles, sizing to obtain particles within a specified size range, and refining to remove fine particles.
Processes and applications for which vibrating sieve machines are used include the removal of foreign matter from incoming raw materials, sizing before and after various processes such as mixing and drying, and inspection of specifications prior to packaging. The sieve size, mesh coarseness, and vibration intensity are set according to each application.
The basic principle of vibrating sieve machines is to vibrate a mesh screen so that only material with a particle diameter smaller than the gap between the meshes can pass through.
The material that remains on the screen is discharged from the machine, while the material that has passed through the screen is sent to the next screen. The number of screens varies from machine to machine, but the most common type of vibrating sieve machines are one with two screens and three discharge ports, since the lower and upper limits of particle size are generally specified. Particles discharged from each screen are returned to the previous process, or used in the next process, depending on the particle size.
Vibration sources are located below or around the screens. In the vibration source, a weight is fixed to a shaft driven by a motor with its center of gravity and axis of rotation shifted, causing it to vibrate eccentrically during rotation. The frequency of the vibration can be varied according to the rotation speed of the motor, so the frequency at which the grains are most efficiently sorted can be theoretically verified or tested in a trial run before an appropriate value is set.
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