Concentrating evaporators – Film type – Rotary drum or disk
Patent
1978-09-05
1980-02-19
Yudkoff, Norman
Concentrating evaporators
Film type
Rotary drum or disk
34113, B01D 122
Patent
active
041893433
ABSTRACT:
A liquid concentrating and solid drying machine in which a pair of heated drums with smooth surfaces disposed in side-by-side relationship project downwardly into a tank, one of the drums preferably being of a smaller size than the other and extending into the liquid in the tank when the tank is operating at a certain level and being disposed above the liquid when the tank is operating at a lower level. Liquid is discharged in the area of close proximity between the two drums, and when both drums are partially immersed in the liquid, they both operate to concentrate the liquid, and when the liquid level falls below the smaller drum, the large drum continues to operate as a liquid concentrating drum and the smaller drum operates as a drying drum. Blades are provided for removing the material on the surface of the drums at the point where the surfaces are traveling generally upwardly, and a pivoted apron is provided adjacent the smaller drum beneath the blade to collect the material scraped from the respective drum and to discharge it from the machine.
REFERENCES:
patent: 1014956 (1912-01-01), Drzymalia
patent: 2391033 (1945-12-01), Northcutt et al.
patent: 3058234 (1962-10-01), Stone
patent: 3068585 (1962-12-01), Overton
patent: 3215190 (1965-11-01), Svanoe
Hobbs Marmaduke A.
Yudkoff Norman
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