PROBLEM TO BE SOLVED: To provide a screw conveyer type cooler in which the cooling efficiency of a cooling treating material is improved.;SOLUTION: This screw conveyer type cooler has a screw shaft extending in the longitudinal direction and a screw blade installed in the screw shaft on the inside, and also a cooling means to cool the treating material of the inside, and cools the treating material of the inside by the rotation on the screw shaft of the screw while the treating material is guided in the longitudinal direction, and the screw is composed of a pair of screws whose screw shafts extend in almost parallel each other and rotating reversely each other, and one screw blade is positioned to the other screw blade so that the screw blades are overlapped between a pair of screw shafts as viewed from the longitudinal direction.;COPYRIGHT: (C)2001,JPO
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