Gravity Separator

Gravity Separators separate any kind of kernels and granular products with nearly the same size according to the specific weight. The size of the kernels is normally between 0.5 mm (fine seeds) and 20 mm (beans). The product processed by the Gravity Separator is separated into layers with different specific weight according to the “Fluid Bed” principle. The fluid bed is built up due to the linear motion of the eccentric drive and the air, which is blown through the wire mesh or textile cloth. This separation gives a spectrum from light to heavy material. Due to the conveying system and the inclination of the deck the light material in the top layer moves down to the low side and the heavy material in the bottom layer moves up to the high side of the deck.

These machines have a rectangular deck so that the product travels a longer distance resulting in cleaner separation of light and heavy particles and the lowest percentage of middling. The product flows over the vibrating deck in which pressurized air is forced through causing the material to stratify according to its specific weight. The heavier particles travel to the higher level and the lighter particles travel to the lower level of the deck.

In order to obtain efficient separation by specific weight, the pressurized air supply needs to be accurately adjusted and this is accomplished by having individually adjustable air fans to control the volume of air distribution at different areas of the vibrating deck.

There are two motors used in these machines. One is for the blower fans and the other used for the deck. The table inclination, speed of eccentric motion and the feed rate can be precisely adjusted with ease and minimum of operator training.