Archbreaking hopper for bulk solids

Static structures (e.g. – buildings) – Fluent material hopper or storage container with material port – Bottom outlet port; e.g. – hopper bottom

Patent

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Details

52192, 2221851, 222462, B65D 8828, B65D 8864

Patent

active

060557818

ABSTRACT:
A hopper that greatly reduces the tendency of the particulate material to form bridges within the hopper is shaped so that its walls slope downward more steeply at the bottom of the hopper and slope less steeply with increasing height above the outlet. In one embodiment the slope decreases continuously with increasing height above the outlet. In another embodiment the hopper is formed of successive sections, each joined around its circumference to the next-lower section, the wall of each section being less steeply inclined than the wall of the adjoining next-lower section. Exact relationships are given, relating the slopes of successive sections, and if the hopper is built in conformity with these relationships, arching of the particulate material is eliminated.

REFERENCES:
patent: 2943752 (1960-07-01), Platt
patent: 3071297 (1963-01-01), Lee
patent: 3593892 (1971-07-01), Petit
patent: 3712002 (1973-01-01), Hillinger et al.
patent: 3797707 (1974-03-01), Jenike et al.
patent: 4286883 (1981-09-01), Johanson
patent: 4702364 (1987-10-01), Johanneck

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