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Libroplantasingl

FUNCTION The main function of the primary feeders is to regulate and dose, in a continuous regime, the flow of waste to be treated in the sorting plant. DESCRIPTION They are mechanical transport systems, generally metallic, located at the base of large guiding hoppers. In this way the waste fed to said hopper is transported to the pre-treatment of the process in the form of conveyor belts using pulling means equipped with transverse ribs. The transport system consists of two shafts (a drive shaft and a return shaft) provided with toothed wheels on the end of each shaft that drag worm gear chains to which are connected to the transport elements provided with rolling or sliding system (rollers or sliding plates). The assembly rests on a sturdy metal trellis frame on which the rolling or sliding paths are installed. The feeders have a centring and tensioning system for the conveyor chains. Some feeder models resemble sturdy conveyor belts with a belt that moves on metal rollers or sliding planes. Waste feeding with the unloading shovel or grapple hook is essential for ensuring correct dosing. Unloading of waste on the feeder guide hopper must be performed gradually in order to facilitate dosing. The waste must fall from the lowest possible height on the feeder area when emptied of waste and should cause distribution of the unloaded volume along the feeder area. In this way the feeder slope performs the backward flipping dosing effect and the longitudinal distribution in an even layer. Erroneous operations in which unloading takes place on top of the waste being dosed by the feeder in most cases results in irregular feeding and potential jams. Primary feeders


Libroplantasingl
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