Agitating – Stirrer within stationary mixing chamber – Rotatable stirrer
Patent
1993-05-03
1994-04-05
Coe, Philip R.
Agitating
Stirrer within stationary mixing chamber
Rotatable stirrer
366319, 366320, B01F 708
Patent
active
052998657
ABSTRACT:
The mixer includes a chamber having first and second, side-by-side tub like cavities with first and second rotatable shafts located in the first and second cavities respectively. Each shaft has two ribbon members coupled to the shaft and which extend helically around the shaft along a substantial length of the shaft with the two ribbon members located about 180 degrees apart. The ribbon members of the two shafts do not intermesh but are located close to each other. A drive mechanism is provided for rotating the two shafts in opposite directions to cause the ribbon members of the two shafts to move toward each other below the plane of the two shafts, upward, and away from each other above the plane of the two shafts for mixing the particulate material. The ribbon members of the two shafts cause the particulate material in the two cavities to move in opposite directions along their lengths. Pitched paddles coupled to one end of one shaft and to one end of the other shaft at opposite ends of the chamber, cause pressure equalization and the particulate material at one end of the chamber to move from the first cavity to the second cavity and at the other end of the chamber to move from the second cavity to the first cavity to provide lateral circulation of the particulate material in the mixer chamber.
REFERENCES:
patent: 934603 (1909-09-01), Gedge
patent: 2498237 (1950-02-01), Baymond
patent: 2761657 (1956-09-01), Rietz
patent: 3941357 (1976-03-01), Wurtz
patent: 4036477 (1977-07-01), Sieradzki et al.
patent: 4278355 (1981-07-01), Forberg
patent: 4733607 (1988-03-01), Star et al.
patent: 4941132 (1990-07-01), Horn et al.
patent: 5083506 (1992-01-01), Horn et al.
Coe Philip R.
Cooley Charles
Hayes & Stolz Industrial Manufacturing Company Inc.
Zobal Arthur F.
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