SOLID RAW MATERIAL SUPPLY MECHANISM

To provide a solid raw material supply mechanism capable of stably conveying a relatively large solid matter.SOLUTION: The solid raw material supply mechanism comprises: a conveyance part 2 having a conveyance space 2h; and an opening/closing part 10 for interrupting/communicating the conveyance space 2h of the conveyance part 2. Each of the opening/closing parts 10 comprises: a rotational shaft 11 which is rotatably provided to the conveyance part 2 and in which a shaft end part 11a protrudes out of the conveyance part 2; a flap plate 12 which is arranged in the conveyance space 2h of the conveyance part 2 and in which a base end part 12a is fixed to a part positioned in the conveyance space 2h in the rotational shaft 11; a swing part 15 which is provided to the shaft end part 11a of the rotational shaft 11 and swings the other end part 12b of the flap plate 12 upward; and a movement limit member 13 for limiting swinging upward of the flap plate 12. The movement limit member 13 is formed by a flange provided along an inner surface of a storage space 2h of the conveyance part 2, and is formed so that an area of an opening 13h surrounded by an inner end edge of the flange is smaller than an area of the flap plate 12 in a plane view.SELECTED DRAWING: Figure 1 【課題】ある程度大きい固形物を安定して搬送することができる固形原材料供給機構を提供する。【解決手段】搬送空間２ｈを有する搬送部２と、搬送部２の搬送空間２ｈを遮断連通する開閉部１０と、を備え、各開閉部１０は、搬送部２に回転可能に設けられ、軸端部１１ａが搬送部２外に突出した回転軸１１と、搬送部２の搬送空間２ｈ内に配置され、回転軸１１における搬送空間２ｈ内に位置する部分に基端部１２ａが固定されたフラップ板１２と、回転軸１１の軸端部１１ａに設けられた、フラップ板１２の他端部１２ｂを上方に揺動させる揺動部１５と、フラップ板１２の上方への揺動を制限する移動制限部材１３と、を備えており、移動制限部材１３は、搬送部２の収容空間２ｈの内面に沿って設けられたフランジで形成されており、フランジの内端縁で囲まれた開口１３ｈの面積がフラップ板１２の平面視の面積よりも小さくなるように形成されている。【選択図】図１