Classifying – separating – and assorting solids – Plural – diverse separating operations – Aqueous suspension – sifting – and stratifying
Patent
1996-03-25
1998-02-24
Bollinger, David H.
Classifying, separating, and assorting solids
Plural, diverse separating operations
Aqueous suspension, sifting, and stratifying
209 17, 209 18, 2091725, 209273, 209461, B03B 700
Patent
active
057203938
ABSTRACT:
A method and apparatus for the separation of manure (104) and sand (102) in a sand and manure mixture (100) is described. The apparatus (10) of the first embodiment includes a tank (12) with an upper grate (22), a lower grate (20), an air supply tube (30) and a water supply tube (36). The apparatus (210) of the second embodiment includes a tank (212) having a screened grate (220), an air supply tube (230) and a water supply tube (236). The apparatus (310) of the third embodiment includes a tank (312) having an upper portion (312C) and a conical lower portion (312D) with a grate (320) between the two portions. In operation, all three embodiments essentially operate similarly. The chamber (12F, 212F and 312F) of the tank is filled with water. The mixture is then dumped into the chamber to form the aqueous suspension (106) with the water. In all three embodiment, the flow of air and water if present, agitates the mixture in the suspension which causes the mixture to break down and the sand to separate from the manure. The sand settles on the floor (12B, 212B and 312B) of the tank while the manure remains suspended in the suspension.
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Handling and Storage Systems For Sand-Laden Dairy Manure From Free Stall Barns, The Proceedings of the Third Inter. Dairy Housing Conf., Dairy Systems for the 21st Century, 1994 ed.
Analysis of a Batch Aerated Grit Ghamber Used to Separate Bedding Sand From Dairy Manure, 1995 ASAE Annual Intl. Meeting Paper No. 95-4705.
Bickert William G.
Severin Blaine F.
Wedel Andrew W.
Board of Trustees operating Michigan State University
Bollinger David H.
McLeod Ian C.
Moyne Mary M.
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