Grinding mechanism

Solid material comminution or disintegration – Apparatus – Including means applying fluid to material

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Details

B02C 2328

Patent

active

040047415

ABSTRACT:
A hopper has an adjustable opening into a tube that leads to the interior of a drum-shaped housing containing a grinding impeller that also functions simultaneously as a screw-type fan and as a paddle-type fan, formed to maximize air turbulence at the grinding edges thereof and to separate finely ground material from the coarser particles continuously. The grinding impeller is operated by a motor attached to the outside of the drum-shaped, grinder housing. The impeller is adjustable relative to a dam that partially surrounds a discharge port in one end of the housing. The dam intercepts air from the vortex created by the impeller, to promote flow of material through the discharge port. A tube leads from the discharge port to a separating device above a drawer having a partition therein, so that the coarse material may be dropped into one compartment and the fine material into the other. A valve in the side of the grinder housing, in communication with the discharge tube, permits extraction of partially or coarsely ground material, such as cracked wheat.

REFERENCES:
patent: 2627376 (1953-02-01), Lee
patent: 2634915 (1953-04-01), Fisher et al.
patent: 2644740 (1953-07-01), Dodds et al.
patent: 2861748 (1958-11-01), Miller

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