Scraping blades for use in thin film dryers

Details Scraping blades for use in thin film dryers Scraping blades for use in thin film dryers

1982-07-08

1984-05-08

Bascomb, Jr., Wilbur L.

Concentrating evaporators

Film type

Centrifugal

159 13A, 159DIG12, 159DIG15, 15236C, 403408, B01D 124, A47L 1308

Patent

active

044472935

ABSTRACT:
A scraping blade for use in a thin film dryer adapted for processing radioactive substances comprises a main body, a hing member rigidly attached to one side of the body and pivotably connected to a rotor in the dryer, a blade chip attached to the other side of the body for engaging the radioactive substance, and a screw member engaged with the body to secure the blade chip to the body. The blade chip is made of a material more than 1.2 times harder than the radioactive substance. The blade may further comprise an engaging member for screw engagement with the screw having edge portions to be engaged with recesses formed on the blade chip and the main body.

REFERENCES:
patent: 1584711 (1926-05-01), Astrom
patent: 3054729 (1962-09-01), Smith
patent: 3180398 (1965-04-01), Belcher et al.
patent: 3271058 (1966-09-01), Anderson
patent: 3416823 (1968-12-01), Auer
patent: 4021991 (1977-05-01), Hotz
patent: 4050771 (1977-09-01), Watson et al.
patent: 4185352 (1980-01-01), Smith
patent: 4208243 (1980-06-01), Knotik et al.
patent: 4208817 (1980-06-01), Merkel
patent: 4238165 (1980-12-01), Wagner

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