Pulverizer

Details Pulverizer Pulverizer

1995-10-06

1997-11-18

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

2412591, 2412611, B02C 1908

Patent

active

056879229

ABSTRACT:
A pulverizer used to pulverize tea leaves, grain such as sesame and wheat, and minerals such as ceramics and rocks. A pair of upper and lower mortars provided for the pulverizer are rotated relatively to pulverize material between the pulverizing surface provided on the top surface of the lower mortar and the pulverizing surface provided on the bottom surface of the upper mortar. The pulverizing surface of the lower mortar is formed in a concave conical shape and the pulverizing surface of the upper mortar is formed in a conical shape matching the concave conical shape. Accordingly, when pulverization is performed between the pulverizing surfaces of the upper and lower mortars, the material is raised along the pulverizing surface of the lower mortar toward its outer peripheral section and slips down along the pulverizing surface, returning toward its central section. This up-and-down movement is repeated. The material can therefore be retained for an extended period of time between the pulverizing surfaces. As a result, the material can be ground down into powder having a small grain size.

REFERENCES:
patent: 2342252 (1944-02-01), Claybourn et al.
patent: 4196224 (1980-04-01), Falk

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