Drum for separating castings and molding sand or the like

Details Drum for separating castings and molding sand or the like Drum for separating castings and molding sand or the like

1988-12-20

1990-06-12

Lacey, David L.

Classifying, separating, and assorting solids

Sifting

Drum sifters

209297, 209294, 209296, 209298, 34109, 34128, 34142, B07B 124

Patent

active

049330730

ABSTRACT:
A rotating drum (1) for cooling and separating castings and molding sand has a foraminous liner (27, 8). In a first part (28) thereof there are sand raising vanes (17) between this liner (27) and the closed wall (28) of the drum to raise sand, passing through the perforations in this liner part (28) to spray it over the castings. In a second, more downstream part (8) of the liner this liner part (8) intersects the theoretical sand level (13, 14) to lift the castings from the sand, so as to discharge the castings via liner part (9) and discharge edge (10) separately from the sand. The sand separated from the castings is taken up in a closed end part (5, 7) of the drum (1) having a discrete discharge edge (11) for discharging the sand at the downstream end in a narrow zone. This gives a drum with high cooling and separating capacity and efficiency with the least possible noise and dust generation.

REFERENCES:
patent: 224406 (1880-02-01), Duhen
patent: 3469324 (1969-09-01), Vissers
patent: 3942644 (1976-03-01), Vissers
patent: 3998262 (1976-12-01), Didion
patent: 4151074 (1979-04-01), Mohri
patent: 4154290 (1979-05-01), Weststrate
patent: 4209055 (1980-06-01), Buhler
patent: 4211274 (1980-07-01), Slowinski
"Fonderie", No. 315, p. 291, 8/72.
"Rotocoolair", Pamphlet by British Ronceracy Lmtd., 1974.

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