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Patent Searching and Data


Title:
HERMETICALLY CLOSED KNEADER
Document Type and Number:
WIPO Patent Application WO1996033851
Kind Code:
A1
Abstract:
A hermetically closed kneader comprising a case member (1) having a cocoon-section closed chamber (2) therein, and a pair of rotors (3, 4) disposed in parallel with each other in the chamber (2) and adapted to be rotated in the opposite directions, each of the rollers (3, 4) having three long blades (18, 19, 20) extending helically around the axis of a roller and spaced from one another in circumferential direction at an equal angle, the axes (17a, 17b) of the rotors (3, 4) being spaced from each other by such a distance L that prevents the long blades (18, 19, 20) of different rotors from being engaged with one another, a cross-sectional shape of the portions of the rotors which include the long blades (18, 19, 20) being set so that a cross section of the rotors becomes substantially triangular, or so that a reaction surface portion (22) of a rear surface (26) with respect to the rotational direction in the cross section of the rotors includes a straight line having as a starting point an end (18a) of a tip (21) of a long blade, or so that the rear surface (26) with respect to the rotational direction in the cross section of the rotors comprises a curved surface similar to one smooth concave or convex or flat surface, the relation between a maximum diameter (Dr) of the cross section of the rotors and a minimum diameter (Dd) thereof being set in the range of 0.5 < Dd/Dr < 0.75 and preferably in the range of 0.6 < Dd/Dr < 0.70, the cross section of the rotors being set so as to meet not less than one of the above conditions, the reaction surface (22) being set comparatively flat.

Inventors:
TAKAKURA KO (JP)
URESHINO KASHIRO (JP)
YAMADA NORIFUMI (JP)
KUROKAWA YOSHINORI (JP)
Application Number:
PCT/JP1996/001101
Publication Date:
October 31, 1996
Filing Date:
April 24, 1996
Export Citation:
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Assignee:
KOBE STEEL LTD (JP)
TAKAKURA KO (JP)
URESHINO KASHIRO (JP)
YAMADA NORIFUMI (JP)
KUROKAWA YOSHINORI (JP)
International Classes:
B29B7/18; (IPC1-7): B29B7/18; B29B7/22
Foreign References:
JPH01307436A1989-12-12
JPS6347107A1988-02-27
JPH02269012A1990-11-02
Other References:
See also references of EP 0774331A4
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