Solid material comminution or disintegration – Apparatus – Stationary comminuting surface or material bed
Patent
1987-03-09
1989-01-10
Echols, P. W.
Solid material comminution or disintegration
Apparatus
Stationary comminuting surface or material bed
B02C 1900
Patent
active
047968222
ABSTRACT:
An impeller is disclosed for use in a centrifugal impact rock crusher. The crusher includes a cylindrical housing and an impact surface positioned radially around the housing interior. The impeller, which is mounted for concentric rotation within the housing, includes upper and lower cover plates, a landing surface being carried upon the lower plate and an opening being formed in the upper plate for directing rock into the impeller. A cylindrical sidewall connects the cover plates and has a plurality of exit openings formed equally spaced around the sidewall. Rotation of the impeller causes a portion of the rock to be crushed to be retained with the impeller by lips and baffles mounted therein, the retained rock forming accumulations having relatively well-defined faces. A plurality of wear plates are carried on the upper and lower cover plates, each wear plate having a recess formed in its surface along the intersection of one face with the wear plate and extending away from the accumulation along at least a portion of the accumulation face. The recess retains rock therein to protect the wear plate surface from abrasion by rock thrown from the impeller.
REFERENCES:
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patent: 3258211 (1966-06-01), Behnke
patent: 3955767 (1976-05-01), Hise
patent: 4090673 (1978-05-01), Ackers et al.
patent: 4166585 (1979-09-01), Alford et al.
patent: 4390136 (1983-06-01), Burk
Acrowood Corporation
Echols P. W.
Gorski Joseph M.
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