SEAL STRUCTURE OF SOLID FEEDING SCREW, AND METHOD OF MANUFACTURING REDUCED METAL USING THE SEAL STRUCTURE

Title:

SEAL STRUCTURE OF SOLID FEEDING SCREW, AND METHOD OF MANUFACTURING REDUCED METAL USING THE SEAL STRUCTURE

Document Type and Number:

WIPO Patent Application WO/2004/070301

Kind Code:

A1

Abstract:

A seal structure of a solid feeding screw such as a raw material leveling screw and a product delivery screw installed in a heating furnace (1) capable of lifting the solid feeding screw (3) while assuring the airtightness of the heating furnace (1) even during an operation, wherein the drive shaft (4) of the solid feeding screw (3) is passed through through-holes (6) formed in both side walls (2) of the heating furnace (1) and supported on liftable support devices(7) installed on both outer sides of the furnace, seal blocks (8) are installed at the furnace outside edge parts (6a) of the through-holes (6) so as to surround the peripheries of the through-holes (6), slide panels (9) having slidable movement holes (10) allowing the drive shaft (4) to be passed therethrough and slidably move therein are installed on the furnace outside of the seal blocks (8), and the slide panels (9) are pressed against the seal blocks (8) through the seal members (11) to such a degree that can be slidably moved in vertical direction.

Inventors:

HASHIMOTO SUMITO (JP)
TETSUMOTO MASAHIKO (JP)

Application Number:

PCT/JP2003/016684

Publication Date:

August 19, 2004

Filing Date:

December 25, 2003

Export Citation:

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Assignee:

KOBE STEEL LTD (JP)
HASHIMOTO SUMITO (JP)
TETSUMOTO MASAHIKO (JP)

International Classes:

F16J15/40; C21B11/08; C21B13/10; F16J15/16; F27B7/24; F27B9/30; F27B9/39; F27D3/08; F27D7/06; F27D99/00; (IPC1-7): F27D3/08

Foreign References:

JP2001304766A	2001-10-31
JPH09217989A	1997-08-19
JPH05196363A	1993-08-06
JPS6096597U	1985-07-01
JPS60104698U	1985-07-17

Other References: