Imperforate bowl: centrifugal separators – Rotatable bowl – Including driven material-moving means therein
Patent
1999-05-17
2000-05-02
Cooley, Charles E.
Imperforate bowl: centrifugal separators
Rotatable bowl
Including driven material-moving means therein
494 62, 494 65, 494 84, B04B 120, B04B 908
Patent
active
06056685&
ABSTRACT:
A centrifuge includes a frame, a hollow spindle supported by the frame for rotation about an axis, a bowl including a shell fixed to the spindle for rotation with the spindle, a shaft situated within and movable with respect to the hollow spindle, and a conveyor fixed to the shaft including a scroll situated adjacent an inner surface of the bowl shell. A harmonic drive unit including a housing is fixed to an end of the hollow spindle, the housing containing a circular spline fixed to the housing. The harmonic drive unit also includes a flexspline gear ring situated within and engaged with the circular spline, the flexspline gear ring being fixed to the shaft situated within the hollow spindle. The harmonic drive unit also includes a wave generator positioned within the flexspline gear ring for displacing the flexspline gear ring with respect to the circular spline. A brake rotor is coupled to the wave generator. A brake control unit is fixed to the frame, the brake control unit including a surface confronting the brake rotor for frictional engagement so that engagement of the brake rotor and confronting surface during rotation of the bowl shell will cause the flexspline gear, rotating relative to the wave generator, to precess relative to the circular spline. The precession of the flexspline gear causes the shaft coupled to the conveyor move relative to the rotating bowl shell, thereby dispensing separated solids out of the bowl shell.
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Cooley Charles E.
G-Force LLC
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