Conveyors: fluid current – Having means for maintaining load in suspension along flow path
Patent
1983-01-13
1985-03-12
Nase, Jeffrey V.
Conveyors: fluid current
Having means for maintaining load in suspension along flow path
406 88, 406136, B65G 5302
Patent
active
045041776
ABSTRACT:
An emptying apparatus for removing the last contents of a silo includes an elevated floor supported by at least two support members above the bottom of the silo. The support members form at least one ventilating channel under the elevated floor. The elevated floor has a flat section for supporting at least two upper sheets, and at least one rib member disposed above the elevated floor and defining at least one emptying channel for emptying the contents of the silo. The flat section of the elevated floor has at least one transverse slit which connects the ventilating channel with the emptying channel. One of the upper sheets is disposed above the transverse slit and the flat section and overlaps another upper sheet to form a slit between them. The extent of overlap of the overlapping sheet is greater than the slide ramp of the silo product located to the right of the slit between the two sheets, such that the product particle cannot easily back up in the slit and drop through the transverse slit in the flat section to the ventilating channel below. An emptying spout connects the emptying channel to an evacuation duct which is disposed in a pressurized air distribution channel. The distribution channel is pressurized by a fan. Each of the upper sheets is of substantially trapezoidal shape and has along its wide base a downward lip and along its narrow base an upward lip, each lip being provided with oblong orifices. The total cross-sectional area of the oblong orifices is approximately one half the total cross-sectional area of the corresponding ventilating channel. The total cross-sectional area of the ventilating channel is approximately one half that of the ventilating exit. A plurality of ventilating channels and emptying channels can be provided.
REFERENCES:
patent: 2492585 (1949-12-01), Kohout
patent: 2882097 (1959-04-01), Hamren
Edelbrock Daniel R.
Nase Jeffrey V.
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