MACHINE FOR SALVAGING WASTE CONCRETE MATERIAL

摘要

ABSTRACT OF THE DISCLOSUREA machine for salvaging wet concrete material has an inclined framewith a classifying drum mounted for axial rotation thereon. The classify-ing drum has a first section adjacent its lower end incorporating anunbroken cylindrical wall, a second section adjacent thereto incorpora-ting a fine sand screen cylindrical wall, a third section adjacent saidsecond section incorporating a coarse sand screen cylindrical wall anda fourth section adjacent thereto incorporating an unbroken cylindricalwall with an open end. A spiral conveyor in the classifying drum isattached to and extends continuously therethrough. A receiving hopper anda well are located on the frame at the lower end thereof for receiving thewet concrete material and water. A rotary elevator is attached to thefirst section of said classifying drum for rotation therewith and ispartially disposed within said well and valve means controls communicationbetween said hopper and said well. A discharge chute is positionedthrough a central opening in said rotary elevator and extends into thefirst section of the classifying drum and delivers wet concrete materialand water from the well into said first section of said classifying drum.A receiving trough is disposed under the screen cylindrical walls of theclassifying drum for receiving water, cement and sand passing therethrough.This invention is distinguishable from others by reason of thearrangement of the rotary elevator, receiving hopper and well with thevalve means for controlling the flow of wet material and water therefrominto said drum.-2-