Title:
AERATION TYPE ROTARY DRYING MACHINE
Document Type and Number:
WIPO Patent Application WO/1997/038277
Kind Code:
A1
Abstract:
An aeration type rotary drying machine is adapted to blow the air into a material layer in a cylinder or blow the air upon the surface of a material layer. The air flows through an air pipe (21) extending from an outlet box (12) through a rotating cylinder (10) in the axial direction thereof to an inlet box (11). The air pipe (21) comprises a plurality of axially connected main pipe members (22, 23, 24) provided in the cylinder (10), the diameters of the main pipe members being set gradually smaller starting at the outlet side toward the inlet side. Since the diameter of the main pipe member (24) closest to the inlet is smallest, the diameter of an opening (32) of an inlet side partition plate (31) of the cylinder (10) can also be set small. Since the radial width of the inlet side partition plate (31) can therefore be set large, the overflowing of fed raw material from the inlet side opening (32) can be prevented. Since the diameter of the main pipe member (22) passing through an opening (34) of an outlet side partition plate (33) is the largest, an available clearance of the outlet side opening (34) becomes smaller. However, the outlet side partition plate (33) comprises louvers (35) as necessary which are arranged in a circumferentially spaced manner, so that the discharging of the air is done not only from the available clearance of the opening (34) but also from the clearance between the louvers (35). This enables the discharged air volume to increase, and the capacity not less than two times as large as that of a general rotary drying machine having a cylinder of the same volume to be secured.
Inventors:
YAMATO YUKIO (JP)
Application Number:
PCT/JP1996/000958
Publication Date:
October 16, 1997
Filing Date:
April 08, 1996
Export Citation:
Assignee:
YAMATO SANKO MFG (JP)
YAMATO YUKIO (JP)
YAMATO YUKIO (JP)
International Classes:
F26B11/02; (IPC1-7): F26B17/32; F26B21/00
Foreign References:
| JPS6117885A | 1986-01-25 | |||
| JPH0599568A | 1993-04-20 | |||
| JPS4516294Y1 | 1970-07-07 | |||
| JPS5991590U | 1984-06-21 | |||
| JPS5972493U | 1984-05-17 | |||
| US4656759A | 1987-04-14 |
Other References:
See also references of EP 0831287A4
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