Rotor blade structure for vertical shaft impact crusher
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United States of America Patent
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-
Mar 12, 1996
Grant Date -
N/A
app pub date -
Dec 23, 1993
filing date -
Jan 22, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rotor blade structure for a vertical shaft impact crusher which enables the lifetime of blades to increase and facilitates maintenance. In the early stage of wear, it takes place by collision between a blade body (2) of each blade (1), particularly teeth (4) provided thereon, and raw stone. Accordingly, in this stage, rods (9) buried in the blade body (2) do not collide with raw stone. As the wear progresses, the rods (9) become exposed. After the rods (9) have been exposed, raw stone also collides with the rods (9), which have a higher hardness than that of the blade body (2). That is, the blade (1) does not subject the rods (9) to wear from the beginning of use of it, but allows the rods (9) to be subjected to wear after the blade body (2) has become worn to a certain extent.
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