Solid material comminution or disintegration – Apparatus – Rotary striking member with axial or radial flow of material
Patent
1976-07-16
1977-12-06
Dost, Gerald A.
Solid material comminution or disintegration
Apparatus
Rotary striking member with axial or radial flow of material
241191, B02C 1310
Patent
active
040612813
ABSTRACT:
The replaceable striking plate, which has a leading impact face, extends between opposite rotor rings of a disintegrating mill, and provides the basis of an impact system. The leading impact face extends rearwardly from its inner edge toward its outer edge at an angle with respect to a radius substantially within the range of fifteen (15) degrees to thirty (30) degrees for the major portion of its radial height, and extends relatively forwardly to its outer edge for a minor portion of its radial height. The major impact face portion has sufficient radial height so that a slug of particles striking the face will all impact on that face without some particles over-shooting the top and thereby missing impact. A clean face surface is provided for the impact of each succeeding "slug or ribbon sheet" of particles as they strike the face. A portion of the new slug does not impact onto a bed of old particles still remaining on the impact face from a previous slug. The radial height of the plate rearwardly from the impact face between the inner and outer edges is sufficient to maintain substantially the same angle and height of the major impact face portion during use and wear. The minor impact fact portion has sufficient radial height to accommodate a wash area at the juncture of the major and minor face portion as wear occurs. Integral flanges provided at each end of the plate and extending forwardly of the leading impact face, are provided with outwardly converging, flow-directing side surfaces adjacent the leading impact face and extending from the inner to the outer edge. The attachment of the striking plate between the rotor rings compresses the striking plate endwise for increased material strength.
REFERENCES:
patent: 1272473 (1918-07-01), Lombard
patent: 3047243 (1962-07-01), Meger et al.
patent: 3549093 (1970-12-01), Pallmann
patent: 3894695 (1975-07-01), Bendedikter
Gundlach Theodore F.
Hawthorne Arthur L.
Dost Gerald A.
Goldberg Howard N.
J.M.J. Industries, Inc.
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