Rotary Drum and vibratory conveyor system

Abstract

A rotary drum and vibratory conveyor system including a single walled rotary drum positioned above a vibratory conveyor assembly. The rotary drum may be segmented with each segment having end flanges that are connected to an adjoining segment with bolts. A section or sections of the rotary drum have perforations covered by a dust hood that allow sand and media to fall from the drum through a funnel structure onto the conveyor assembly. The vibratory conveyor assembly includes upper and lower conveyors, where the upper conveyor collects the media falling from the drum and passes the sand to the lower conveyor. The media may be redirected back to the drum inlet to be reused.

1 .- 13 . (canceled) 
   
   
       14 . A rotary drum and vibratory conveyor system comprising:
 a base frame;   a single walled rotary drum mounted to the base frame, the rotary drum having an intake end portion and a discharge end portion, the wall of the rotary drum having a section with a plurality of perforations;   a dust hood mounted to the base frame and position over the section of the rotary drum having the plurality of perforations;   a funnel structure mounted adjacent to and extending below the section of the rotary drum having the plurality of perforations, and   an upper and lower conveyer assembly mounted to the base frame and positioned adjacent to and below the funnel structure to receive material falling through the perforations from within the rotary drum, wherein the material is guided by the funnel structure.   
   
   
       15 . The drum and conveyor system of  claim 14  wherein:
 the drum is formed of a plurality of individual segments, each segment having a longitudinal length and first and second end portions and each end portion of each segment.   
   
   
       17 . The drum and conveyor system of  claim 14  wherein:
 the rotary drum includes a section having perforations of different sizes.   
   
   
       18 . The drum and conveyor system of  claim 14  including:
 a material return structure mounted to the intake end portion of the rotary drum wherein the material return structure is fed by the upper and lower conveyor assembly.   
   
   
       19 . The drum and conveyor system of  claim 14  wherein:
 the funnel structure includes slanted walls.   
   
   
       20 . The drum and conveyor system of  claim 19  wherein:
 the slanted walls of the funnel structure extend from the dust hood to a location adjacent the upper and lower conveyor assembly.   
   
   
       21 . The drum and conveyor system of  claim 14  wherein:
 an upper conveyor of the upper and lower conveyor assembly includes structure to pass smaller material and capture larger material falling from the rotary drum.   
   
   
       22  The drum and conveyor system of  claim 21  wherein:
 a lower conveyor of the upper and lower conveyor assembly includes structure to capture the smaller material.   
   
   
       23 . The drum and conveyor system of  claim 14  wherein:
 the drum is formed of a plurality of individual segments, each segment having a longitudinal length and first and second end portions, and each end portion of each segment having an axially directed flange for facilitating connection of one drum segment to another drum segment;   each flange includes holes to enable the integral drum segment to be connected to another drum segment with bolts; and   the rotary drum includes a section having perforations of different sizes.   
   
   
       24 . The drum and conveyor system of  claim 23  including:
 the funnel structure includes slanted walls.   
   
   
       25 . The drum and conveyor system of  claim 24  wherein:
 an upper conveyor of the upper and lower conveyor assembly includes structure to pass smaller material and capture larger material falling from the rotary drum.   
   
   
       26 . The drum and conveyor system of  claim 14  wherein:
 the drum is formed of a plurality of individual segments, each segment having a longitudinal length and first and second end portions, and each end portion of each segment having an integral axially directed flange for facilitating connection of one drum segment to another drum segment;   each flange enables the integral drum segment to be connected to other drum segments with bolts; and   the rotary drum includes a section having perforations of different sizes.   
   
   
       27 . The drum and conveyor system of  claim 26  wherein:
 the funnel structure includes slanted walls; and   the slanted walls of the funnel structure extend from the dust hood to a location adjacent the upper and lower conveyor assembly.   
   
   
       28 . The drum and conveyor system of  claim 27  wherein:
 an upper conveyor of the upper and lower conveyor assembly includes structure to pass smaller material and capture larger material falling from the rotary drum.   
   
   
       29 . The drum and conveyor system of  claim 28  wherein:
 a lower conveyor of the upper and lower conveyor assembly includes structure to capture the smaller material.   
   
   
       30 . The drum and conveyor system of  claim 14  including:
 a drive system mounted to the base frame to enable rotation of the drum;   alignment structure mounted to the base frame to restrict movement of the rotary drum in a longitudinal direction; and wherein   the funnel structure includes slanted walls;   the slanted walls of the funnel structure extend from the dust hood to a location adjacent the upper and lower conveyor assembly;   an upper conveyor of the upper and lower conveyor assembly passes smaller material and captures larger material falling from the rotary drum; and   a lower conveyor of the upper and lower conveyor assembly captures the smaller material.   
   
   
       31 . The drum and conveyor system of  claim 30  wherein:
 the drum is formed of a plurality of individual segments, each segment having a longitudinal length and first and second end portions, and each end portion of each segment has an integral axially directed flange for facilitating connection of one drum segment to another drum segment; and   each flange enables the integral drum segment to be connected to other dram segments with bolts.   
   
   
       32 . A method for sorting material using a rotary drum and conveyor system comprising the steps of:
 introducing material to be sorted into a single walled rotary drum, the drum having a section with perforations through the wall of the drum;   rotating the drum;   passing the material in the drum through the perforations and through a funnel; and   depositing the material on an upper and lower conveyor assembly, wherein larger material is deposited on an upper conveyor of the upper and lower conveyor assembly and smaller material falls through the upper conveyor to land on a lower conveyor of the upper and lower conveyor assembly.   
   
   
       33 . A method for assembling a rotary drum and conveyor system comprising the steps of:
 mounting a rotary drum to a base frame, the rotary drum having a single wall wherein a portion of the wall is perforated;   mounting a funnel structure to the base frame; and   mounting a vibratory upper and lower conveyor assembly to the base frame beneath the funnel structure to enable material within the drum to pass through the perforated wall of the drum, the material thereafter being guided by the funnel structure before falling onto the upper and lower conveyor assembly.