Closure to “Discussions of ‘A Study of Factors Affecting the Performance of Screw Conveyers and Feeders’” (1969, ASME J. Eng. Ind., 91, pp. 333–334)

Abstract

Unlike most feeders which run in a pipe, the screw used in the present experiments ran in a trough. However, when the channel shape was made cylindrical by putting a half cylinder over the top of the screw, this resulted in very little difference in throughput or in power requirement. With the trough it was possible to increase the throughput by up to 10 percent by raising the hopper outlet to 5 cm above the blades-this was due to material moving along above the top of the blades.

An Automatic Shake Mechanism for the Biomass Pyrolysis Feeding

“…Roberts et al [2] analyzed the volumetric characteristics and mechanics of screw feeders in relation to the bulk solid draw-down characteristics of the feed hopper. Carleton et al [3] discussed the performance of screw conveyors and screw feeders based on experiments on the effects of screw geometry, speed, fill level and material properties. Rautenbach and Schumacher [4] derived a set of parameters by dimensional analysis to calculate the power consumption and transport capacity and compared two geometrically similar screws.…”