Impeller assembly for an impact crusher
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United States of America Patent
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Mar 25, 1986
Grant Date -
N/A
app pub date -
Nov 18, 1983
filing date -
Nov 18, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved impeller assembly for use in a centrifugal impact rock crusher is provided in which rock to be crushed is directed to the impeller interior. The impeller assembly is rotated within the crusher housing and throws the rock against an impact surface positioned radially around the housing interior. The impeller assembly includes generally circular upper and lower plates, the upper plate having a concentric circular opening for receiving rock into the impeller interior. A cylindrical side wall connects the upper and lower plates and has defined therein a plurality of exit openings equally spaced along the wall through which rock to be crushed is thrown. Each of the openings has upper, lower and two side edges, with the upper and lower edges being remote from the upper and lower plates, respectively. A portion of the incoming rock material is trapped as accumulations within the impeller interior. The remainder of the incoming rock material is thrown outwardly along the accumulations and across replaceable lips provided along one side edge of each opening.
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