Continuous Discharge :
These elevators are necessary when the material conveyed is to be handled carefully and not damaged in anyway during handling. In this type of elevator, the buckets are spaced continuously and are loaded by direct feeding as against to direct feeding as well as scooping of material from the bottom boot in case of centrifugal or positive discharge elevators. And because the incoming material is not scooped, damage to the same is avoided. Spillage between buckets is prevented by their close spacing. Further the geometry of the buckets is such that, as the buckets discharge, the material flows over the preceeding bucket, whose front end and projecting sides form a chute to the discharge spout. These elevators also normally operate at a slow speed of about 0.6 m/sec. |