Agitating – Stirrer within stationary mixing chamber – Rotatable stirrer
Patent
1996-05-07
1997-07-22
Jenkins, Robert W.
Agitating
Stirrer within stationary mixing chamber
Rotatable stirrer
366310, 366331, B01F 708
Patent
active
056497652
ABSTRACT:
A conical mixer for mixing and processing materials comprises a mixing chamber, an orbit arm positioned within the chamber for rotating therearound and a mixing screw coupled to the end of the orbit arm for rotation simultaneous with the rotation of the orbit arm. A driver for rotating the screw is coupled to an orbit arm assembly which includes a first drive gear coupled to the driver and a first mixing screw shaft with a first driven gear which cooperates with the first drive gear to rotate the first mixing screw shaft. A second drive gear is positioned at the end of the first mixing screw shaft and cooperates with a second driven gear which is, in turn, coupled to a second mixing screw shaft. Each of the driven gears includes a plastic gear portion to engage the respective drive gear in a generally lubricant free engagement for reducing the amount lubricant exposed to the mixing space of the chamber. The first and second mixing screw shafts are supported by a plurality of bearings. The bearings include solid lubricant therein which is generally solidly contained in the bearing during operation of the orbit arm for preventing exposure to the inside of the mixer. Thereby contamination of the mixing space and maintenance of the mixer is reduced.
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Middendorf Michael J.
Stokes Michael J.
Jenkins Robert W.
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