Resonance screening machines are used for end products with highest screening quality and for cut points of up to 70 mm in dry and wet screening of round and square grains as well as fishy (flaky) material.
With a low overall height, up to 6 end products can be separated with one machine. Since no dynamic forces are released during screening, light substructures are sufficient. Cost savings also result from the elimination of additional conveyor belts.
Resonance screening machines are guided by suspension arms, work on the ejection principle and execute a linear movement. Two rocker arms with identical weights are bedded in rubber sleeves and connected to the suspension arms to provide a maintenance free mechanism. Both rocker arms are excited by an eccentric drive whose connecting rods are secured to elastic spring mountings. The energy transferred from the vibratory system by these elastic springs is relatively little compared to other screening systems.
Drive is achieved by electric motor and v-belt. Mounting is on suspension arm supports and steel base frame which in turn is mounted on antivibration blocks.