Drying apparatus having a rotary spiral blade and a baffle plate

Details Drying apparatus having a rotary spiral blade and a baffle plate Drying apparatus having a rotary spiral blade and a baffle plate

1992-10-13

1994-08-02

Gromada, Denise

Drying and gas or vapor contact with solids

Apparatus

Gravity flow type

34179, 34181, 366310, F26B 1712

Patent

active

053333969

ABSTRACT:
A drying apparatus for removing moisture content from a substance to be dried, comprises a peripheral wall defining a working space for drying the substance, the peripheral wall defines at least an inlet for charging the substance to be dried, an outlet for taking the dried substance therefrom and a drain. A rotary spiral blade assembly is disposed within the working space and has a lower end, at which the substance accumulated on the bottom of the working space rides on a transporting surface of the rotary spiral blade assembly. The rotary spiral blade assembly is rotatable at a predetermined rotation speed sufficient for forcing the substance on the transporting surface to climb up toward the upper end of the rotary spiral blade assembly. The rotary spiral blade assembly defines a path for the substance reaching at upper end thereof to fall down to the bottom. A heating device is associated with at least one of the peripheral wall and the rotary spiral blade assembly for heating a surface interfacing with the substance, while the substance travels on the transporting surface toward the upward end. A device located in opposition to the upper end of the rotary spiral blade assembly, forces the substance reaching the upper end to fall down through the path.

REFERENCES:
patent: 2806298 (1957-09-01), Rossi
patent: 3955554 (1976-05-01), Collie
patent: 4245399 (1981-01-01), Muller et al.
patent: 4499669 (1985-02-01), Haeck
patent: 4702177 (1987-10-01), Narisoko et al.
patent: 4915506 (1990-04-01), Sato et al.
patent: 5074057 (1991-12-01), Kanai

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