Device for promoting gravity flow of non-free-flowing solids

Details Device for promoting gravity flow of non-free-flowing solids Device for promoting gravity flow of non-free-flowing solids

1993-06-01

1995-05-02

Bucci, David A.

Agitating

Stirrer within stationary mixing chamber

Rotatable stirrer

366308, 414288, 222240, 222228, 222410, B01F 700, B65G 100, G01F 1120

Patent

active

054113318

ABSTRACT:
A device for promoting gravity flow of zirconium tetrachloride and other non-free-flowing solids has a rotatable shaft. At least two flexible lengths have first ends attached to and axially spaced on the shaft and also distal second ends. A collar is slidably mounted on the shaft between the spaced first ends of the flexible lengths for slidable axial and circumferential movement on the shaft. At least one sweep arm has a first end pivotally attached to the collar and a second distal end attached to the second distal ends of the flexible lengths. The collar slides relative to the shaft as the sweep arm encounters resistance from bridged solids. The relative movement of the collar and shaft causes the flexible lengths to wrap around the shaft and the arms to collapse toward the shaft. A device with collapsible arms will have a minimal torque requirement. When the solids dislodge from the collapsed sweep arms, the arms extend to sweep outwardly to a maximum extent.

REFERENCES:
patent: 292590 (1884-01-01), Schafhaus
patent: 697579 (1890-04-01), Wehmeier et al.
patent: 955978 (1810-04-01), Mitchell
patent: 1218623 (1917-03-01), Brillhart
patent: 2228421 (1941-01-01), Taylor
patent: 2561258 (1951-07-01), Wolf et al.
patent: 3037713 (1962-06-01), Carroll
patent: 3132850 (1964-05-01), Puchalski
patent: 3424350 (1969-01-01), Herr et al.

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