B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
209/114
B07B 1/00 (2006.01)
Patent
CA 1078789
ABSTRACT OF THE DISCLOSURE A machine for salvaging wet concrete material has an inclined frame with a classifying drum mounted for axial rotation thereon. The classify- ing drum has a first section adjacent its lower end incorporating an unbroken cylindrical wall, a second section adjacent thereto incorpora- ting a fine sand screen cylindrical wall, a third section adjacent said second section incorporating a coarse sand screen cylindrical wall and a fourth section adjacent thereto incorporating an unbroken cylindrical wall with an open end. A spiral conveyor in the classifying drum is attached to and extends continuously therethrough. A receiving hopper and a well are located on the frame at the lower end thereof for receiving the wet concrete material and water. A rotary elevator is attached to the first section of said classifying drum for rotation therewith and is partially disposed within said well and valve means controls communication between said hopper and said well. A discharge chute is positioned through a central opening in said rotary elevator and extends into the first section of the classifying drum and delivers wet concrete material and water from the well into said first section of said classifying drum. A receiving trough is disposed under the screen cylindrical walls of the classifying drum for receiving water, cement and sand passing therethrough. This invention is distinguishable from others by reason of the arrangement of the rotary elevator, receiving hopper and well with the valve means for controlling the flow of wet material and water therefrom into said drum. -2-
311329
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