PROBLEM TO BE SOLVED: To provide a particle feeder which mitigates a shock on the particle feeder due to the biting of a particle.SOLUTION: A particle feeder includes a cylinder part 21 in which a plurality of concave part arrays are arranged in line along a cylinder rotation shaft R1 while setting the concave parts 212 arrayed with a fixed pitch in a circumferential direction on a cylinder outer lateral surface 211 as a recessed part array 213. A particle filling port for successively filling particles of absorptive material is provided on the upper side of the cylinder part. A part of the cylinder outer lateral surface is covered with a cover part which spreads from the particle filling port to a lower part of the cylinder part and a particle is successively released from a plurality of concave parts on the neighborhood of an edge of the front side in a rotation direction of a cover part. When a portion for partitioning two concave parts adjoining in the circumferential direction is set as a partitioning part 214, a plurality of concave part arrays contain at least three concave part arrays in which positions in the circumferential direction of the partition parts are different from one another and, thereby, a shock generated from the biting of a particle between the partition part on the plurality of concave part arrays and an edge on the rear side in the rotation direction of the cover part is dispersed and mitigated.【課題】粒子の噛み込みによる粒子供給装置における衝撃を緩和する。【解決手段】粒子供給装置は、シリンダ外側面２１１にて周方向に一定ピッチにて配列された凹部２１２を凹部列２１３として、複数の凹部列がシリンダ回転軸Ｒ１に沿って並ぶシリンダ部２１を備える。シリンダ部の上方には、複数の凹部に吸収材料の粒子を順次充填する粒子充填口が設けられる。粒子充填口からシリンダ部の下部まで回転方向へと広がるカバー部によりシリンダ外側面の一部が覆われ、カバー部の回転方向の前側のエッジ近傍において、複数の凹部から粒子が順次放出される。周方向に隣接する２つの凹部を仕切る部位を仕切部２１４として、複数の凹部列が、仕切部の周方向の位置が互いに相違する少なくとも３つの凹部列を含むことにより、複数の凹部列における仕切部とカバー部の回転方向の後側のエッジとの間に粒子が噛み込むことにより生じる衝撃が分散されて緩和される。【選択図】図３
