Rotary type heat treatment device, and temperature control metho

Details Rotary type heat treatment device, and temperature control metho Rotary type heat treatment device, and temperature control metho

1998-08-17

2000-05-16

Wilson, Pamela A.

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

422209, F26B 1102

Patent

active

060619252

ABSTRACT:
An object of the invention is to provide a rotary type heat treatment device wherein, when a material to be sintered is continuously and stably sintered in a container, the material in the container is stably detected for a long period of time, and a temperature control method for the device. In order to perform temperature control with high accuracy, the inside of a container 6 is divided with screws 18 into temperatures control regions (1) through (6). Heat-resisting protective tubes 20, which are provided on the inner cylindrical wall of the container in such a manner that they are juxtaposed, and complementary thermocouples, are extended to the respective temperature control regions and are bent laterally. The temperature detecting sections 25 of the thermocouples that are led out of the protective pipes 20 are covered with heat-resisting material, and transmit electrical signals outside through a current collecting section consisting of a slip ring and brushes. The shift in temperature measuring position of the thermocouples is positively prevented. In addition, the thermocouples are prevented from being damaged; that is, they are prevented from being brought into contact with the inner cylindrical wall of the container. With the device, the sintering operation can be continuously and stably carried out for a long period of time.

REFERENCES:
patent: 3896556 (1975-07-01), Welter
patent: 3940199 (1976-02-01), Ecklund
patent: 5312599 (1994-05-01), Schwartz, Jr.

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