MOVABLE FLAP DAMPER DEVICE

PROBLEM TO BE SOLVED: To provide a structure with abrasion resistance and durability in a structure part tightly pressed into a flange shape by multiple flaps of a movable damper device provided at a middle of a chute, inside which powder flows. SOLUTION: This movable flap type damper device has a chute, in which powder flows, an opening opened in an inverted conical shape toward a lower part of the chute, a damper contacting a tip of the opening and closing the opening, and a shaft part for supporting the damper. Three or more kinds of members with different materials are adhered to a tip of the opening in a layered manner toward a flowing direction of the chute, and an intermediate layer contacting a surface layer contacting the damper is an elastic material. A substrate layer for nipping the intermediate layer together with the surface layer is adhered to a top of the intermediate layer. COPYRIGHT: (C)2010,JPO&INPIT