Agitator with two sets of blades each driven in an opposite dire

Details Agitator with two sets of blades each driven in an opposite dire Agitator with two sets of blades each driven in an opposite dire

1981-07-14

1983-09-13

Coe, Philip R.

Agitating

Stirrer within stationary mixing chamber

Rotatable stirrer

277 59, 277 65, 277DIG8, 366296, B01F 718

Patent

active

044038682

ABSTRACT:
An agitator for stirring a flowable material in a vessel, such as a pressure vessel, includes a first set of agitator blades laterally surrounded by a second set. Each set has its own agitator shaft, an inner shaft for the first set of blades and a tubular outer shaft for the second set. The shafts are coaxial and extend through a housing into the vessel. Each set of blades rotates in an opposite direction about a common axis. An axial seal ring unit forms a seal between the inner shaft and the outer shaft and between the outer shaft and the housing. The seal ring unit is formed of two coaxial plural component seal rings, one between the two shafts and the other between the outer shaft and the housing.

REFERENCES:
patent: 1767346 (1930-06-01), Christiansen
patent: 2209287 (1940-07-01), Simpson
patent: 2265867 (1941-12-01), Sauer
patent: 3743302 (1973-07-01), Bach et al.
patent: 3782739 (1974-01-01), Kahanek et al.

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