Rotary tumbler and metal reclaimer

• US 8,245,962 B2
• Filed: 02/17/2011
• Issued: 08/21/2012
• Est. Priority Date: 07/29/2008
• Status: Active Grant

• Current Assignee: Didion Technologies LLC
• Original Assignee: Didion Manufacturing Company
• Inventors: Didion, Michael S.
• Primary Examiner(s): Francis, Faye
• Application Number:
  US12/932,129
• Publication Number:
  US 20110139915A1
• Time in Patent Office: 551 Days
• Field of Search: 241/74, 241/81, 241/91, 241/251, 241/161.1, 241/299
• US Class Current: 241/74
• CPC Class Codes: B02C 17/002 with rotary cutting or beating elements
• CPC Class Codes: B02C 17/06 with several compartments
• CPC Class Codes: B02C 17/1825 Lifting devices lifting devices associated with the lining for containers B02C17/22
• CPC Class Codes: B02C 17/183 Feeding or discharging devices
• CPC Class Codes: B22C 5/085 Cooling or drying the sand together with the castings
• CPC Class Codes: B22D 31/007 Tumbling mills
• CPC Class Codes: Y10S 241/10 Foundry sand treatment

Abstract

A rotary tumbler metal reclaimer includes an inner cylinder and a concentric outer cylinder that rotate simultaneously. The inner cylinder includes a first compartment that intakes material for breaking by teeth, a second compartment that receives broken material from the first compartment and crushes the material into smaller particles and a third compartment wherein particulate material enters the space between the inner cylinder and the outer cylinder by attrition through perforated screens. The second compartment includes a crusher having various features for crushing lump material as it rotates. The third compartment provides further breakage and conveyance of particulate material. Particulate material then returns proximate the intake for screening into fine and coarse sizes and then collecting for reuse. Metallics and metallic oxides exit the tumbler through apertures in the rear of the third compartment for collection. The tumbler reclaims metals, metallic oxides, sands, and other materials for reuse.

Claims

1. A rotary tumbler and metal reclaimer drum for reclaiming and reclassifying metallics, metallic oxides, sands and related aggregates from lump materials, said drum being substantially horizontally disposed for rotation for reclaiming lump materials, comprising:

an inner cylinder having a first end and a second end opposite said first end, said inner cylinder forming a first compartment, a second compartment inwardly of said first compartment, and a third compartment inwardly of said second compartment and opposite said first compartment, said first compartment including an intake receiving lump material, said first compartment breaking up and separates the lump material into smaller pieces, said second compartment providing a crushing chamber for further breaking up the lump material passing therethrough, and said third compartment providing an attrition chamber furnishing a high tumbling action to further reduce the size of the remaining lump material;

an outer cylinder concentric with said inner cylinder, said outer cylinder extending beyond said inner cylinder at said first end of said inner cylinder forming said first compartment providing intake of lump material therein;

said intake compartment being of larger diameter to receive the lump material and having high profile spaced apart teeth arranged in helical flights, said teeth advancing the lump material without substantial surges through said first compartment, and said intake compartment having a diameter larger than the diameter of said inner cylinder;

said teeth of said first compartment breaking the lump material into smaller pieces and advancing the smaller pieces into said crushing chamber where the lump material is crushed into further smaller pieces, the smaller pieces of lump material then passing into said attrition chamber;

said crushing chamber including a slotted disc proximate the juncture of said second compartment with said first compartment; and

a crusher behind said slotted disc and having a length of weighted material disposed for partially resting upon the inner surface of the inner cylinder, a head proximate said first section and an opposite tail generally resting upon said inner cylinder, said head including a plurality of high profile teeth spaced thereon to crush the lump material, said tail including a plurality of suspension devices thereon to gradually feed and deliver the lump material and forcing it underneath the crusher, said crusher being urged into rotation by turning of said inner cylinder, said head being pivotally suspended approximately centrally of the inner cylinder;

a suspension device pivotally holding said tail of said crushing means upon the inner cylinder, said suspension device including a series of links supporting said head of said crusher generally centered within said inner cylinder behind said slotted disc, said suspension device providing rotation of said crusher at a different speed of rotation from that of the inner cylinder;

said attrition chamber having at least a partially perforated cylinder wall where high tumbling action further reduces the size of the pieces of the lump material to particulate matter so as to pass a substantial portion of the material through its perforations, at least one major vane extending in a continuous helical manner along said attrition chamber;

said inner cylinder at its second end having an exit, said exit being partially annular and having a radius less than the diameter of said inner cylinder, any material not passing through the perforations of said attrition chamber leaves said attrition chamber through said exit;

at least one conveying vane provided intermediate said inner cylinder and said outer cylinder for longitudinal movement of any particulate matter deposited therein generally in the opposite direction of the lump material passing within said inner cylinder;

at least one screen at least partially surrounding said intake chamber, said particulate matter moved by said conveying vane being deposited onto said at least one screen for further classification of the particular matter, the matter remaining on the screen being recycled back into the intake compartment; and

,

a base incorporating drive means supporting the drum and driving the drum in rotation.

2. The rotary tumbler of claim 1 further comprising:

said teeth within said intake compartment having at least one longitudinal vane thereon.

3. The rotary tumbler of claim 1 further comprising:

said teeth within said attrition chamber having a plurality of high profile teeth spaced apart in a generally helical manner, and said teeth within said attrition chamber having serrations thereon opposite said inner surface.

4. The rotary tumbler of claim 1 further comprising:

a fine screen at least partially surrounding said intake chamber generally proximate said second compartment; and

,

a course screen at least partially surrounding said intake chamber generally outwardly of said fine screen;

said fine screen and said course screen both remove certain sizes of particulate matters through separated collection means for reuse and recycling.

5. The rotary tumbler of claim 1 further comprising:

said slotted disc having a central opening, said central opening having a plurality of radial teeth about the circumference of said central opening, a plurality of annular slots about the circumference of said slotted disc, and each pair of annular slots being spaced apart by a strut, each of said struts extending inwardly from the circumference of said slotted disc to the circumference of said central opening;

wherein said slotted disc admits smaller pieces of lump material through said slots for immediate crushing by said tail and admits larger pieces of lump material over said teeth of said central opening for immediate crushing by said head.

6. The rotary tumbler of claim 1 wherein said crusher occupies approximately the entire diameter of said inner cylinder.

7. The rotary tumbler of claim 1 further comprising:

said teeth upon said head of said crusher having a generally helical arrangement guiding larger lump material following crushing by said head towards and under said tail for further crushing.

8. The rotary tumbler of claim 1 wherein the suspension means provides for independent both radial and axial movement of the crusher relative to the inner cylinder to create a free floating action for the crusher during its operation.