Downflow mixer

Agitating – Stirrer within stationary mixing chamber – Mounted in removable mixing chamber closure

Patent

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Details

366270, 366136, 277205, 277212C, B01F 722

Patent

active

044227710

ABSTRACT:
A floating downflow mixer including a float having a central float passage and a pump casing mounted on the float with its upper end spaced below the float to provide an intake at the underside of the float. A drive motor is mounted on top of the float and has an integral shaft extension extending downwardly through the float passage and a propeller mounted at its lower end in the pump casing. A shaft stabilizer tube is supported on a mounting plate attached to the top of the float and extends downwardly through the float with an anti-deflection bearing at its lower end surrounding the shaft and having a running clearance therewith to inhibit deflection of the shaft. The mounting plate seals the float passage between the stabilizer tube and float and a mechanical rotary seal seals the interface between the stabilizer tube and shaft to prevent entrance of air to the anti-deflection bearing and propeller.

REFERENCES:
patent: 1749281 (1930-03-01), Hambleton
patent: 2209287 (1940-07-01), Simpson
patent: 2293183 (1942-08-01), Walker
patent: 3279802 (1966-10-01), Carre
patent: 3606273 (1971-09-01), Johnson
patent: 3856272 (1974-10-01), Ravitts

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