Method of uniformly supplying a mixture of particulate solids

• US 7,651,007 B2
• Filed: 10/03/2007
• Issued: 01/26/2010
• Est. Priority Date: 12/15/2005
• Status: Active Grant

• Current Assignee: Jenike & Johanson, Inc.
• Original Assignee: Jenike & Johanson, Inc.
• Inventors: Hancock, Bruno Caspar, Prescott, James K., Clement, Scott A., Brone, Dean Lance, Troxel, Thomas G., McCall, Michael A., Hedden, David Bruce
• Primary Examiner(s): NGO, LIEN M
• Application Number:
  US11/906,948
• Publication Number:
  US 20080028874A1
• Time in Patent Office: 846 Days
• Field of Search: 222/1, 222/229, 222236-238, 222/504, 738/66, 738/661, 738/642.4, 738/634.5, 738/635.4, 738/635.6, 366/130, 366134-136
• US Class Current: 222/1
• CPC Class Codes: G01N 1/20 for flowing or falling materials G01N1/2035 G01N1/12, G01N1/14 take precedence

Abstract

A method makes use of a minimally-shearing feeder mechanism supplying a desired flow of particulate solids mixture, with minimal to no sifting segregation to a desired location. The feeder methodology maintains a uniform concentration of each size of particle within the mixture.

Claims

1. A method of uniformly supplying a mixture of particulate solids, the method comprising:

receiving a supply of the mixture from a supply source;

directing the mixture to a deposition aperture configured to receive the mixture and deposit the mixture on a rotating plate in the form of a deposited trail as the rotating plate rotates;

displacing the deposited trail radially and progressively outwardly along the rotating plate to a plurality of pass through apertures disposed in the plate;

discharging the mixture from the plurality of pass through apertures and through a discharge aperture;

wherein displacing the deposited trail comprises using a fixed cam plate having a contoured periphery configured to displace the deposited trail radially and progressively outward to the plurality of pass through apertures of the rotating plate as the rotating plate rotates, supplying the mixture forming the deposited trail to the discharge aperture.

2. The method of claim 1, wherein the supply source comprises a bin or hopper.

3. The method of claim 1, wherein the deposition aperture is disposed in the fixed cam plate slidably mounted over the rotating plate.

4. The method of claim 1, wherein displacing the deposited trail comprises forming the deposited trail on the rotating plate with a uniform cross-sectional area.

5. The method of claim 1, wherein the cam plate is configured to displace the deposited trail radially and progressively outward with minimal shearing of the mixture forming the deposited trail.

6. The method of claim 1, further comprising rotating the rotating plate at a rate that at least substantially hinders the mixture from arching over the plurality of pass through apertures.

7. The method of claim 1, further comprising rotating the rotating plate at a rate of between about 2 RPM and about 20 RPM.

8. The method of claim 1, further comprising providing a motor driving the rotating plate.

9. The method of claim 1, wherein the feeder supplies a substantially constant stream of the mixture through the discharge aperture.