Vertical silo for fluid bulk material with an inner blending cha

Details Vertical silo for fluid bulk material with an inner blending cha Vertical silo for fluid bulk material with an inner blending cha

1977-10-21

1980-12-16

Spar, Robert J.

Conveyors: fluid current

With means to control conveying fluid or movement of load in...

Control of conveying fluid

222195, 366106, 366107, 406 90, 406138, B65G 6906

Patent

active

042394210

ABSTRACT:
A blending chamber silo for pulverized bulk material has a main silo chamber with an inlet in its uppermost region, and a centrally located blending chamber on the floor of the silo has a roof and side walls with bottom apertures therein for the influx of the material from the main silo chamber into it. Aeration apparatus and air inlets are provided for the silo floor, and separate homogenization aeration apparatus is provided for the floor of the blending chamber, which operates under a pressure higher than that of the silo aeration apparatus. The roof of the blending chamber is spaced well below the top of the silo, and the blending chamber has a diameter substantially smaller than the diameter of the silo, whereby the lower portion of the silo wall and the wall of the blending chamber define a semi-annular narrow space having a height to width ratio greater than 1:1 and which breaks up material compacted or formed into bridges in its downward path toward the bottom apertures of the chamber. The combined function of the semi-annular narrow space and of the two sets of aeration apparatus of different pressures prevents the material in the semi-annular space from compacting and forming bridges and keeps the homogenizing means free of compacted material. A relief chamber is connected between the blending chamber and outlet from the silo.

REFERENCES:
patent: 3188144 (1965-06-01), Gmur et al.
patent: 3758162 (1973-09-01), Holm et al.
patent: 3933394 (1976-01-01), Klein et al.
patent: 3976232 (1976-08-01), Heidebrock
patent: 3995771 (1976-12-01), Olivier

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