Problem to be solved: to improve workability and operability while effectively enhancing the attractive force.Solution: a cylindrical flow path 33 for circulating a pressure wind supplied from the blower device 80 is partitioned by an inner cylinder 32 and an outer tube 31, and an injection port 37 communicating with the cylindrical passage 33 between the upstream end in the suction direction of the inner cylinder 32 and the outer tube 31 is opened to the inside of the inner tube 32, and the injection port is opened An ejector main body 30 for generating a suction force in the air flow direction by air jetted toward the downstream side in the suction direction in the inner cylinder 32, and a suction opening 41 at an upstream end of the suction direction are provided.A suction tube 40 for sucking the topsoil from the suction port 41 by suction force and a suction portion 60 provided at the downstream side in the suction direction of the ejector body 30 and accommodating the topsoil are provided downstream downstream of the suction port 37 of the outer tube 31.Diagram【課題】吸引力を効果的に強めつつ、作業性及び操作性を向上する。【解決手段】ブロワ装置80から供給される圧力風を流通させる筒状流路33が内筒32と外筒31とにより区画形成されており、内筒32の吸引方向上流端側と外筒31との間に筒状流路33と連通する噴出口37が内筒32の筒内に臨んで開口し、噴出口37から内筒32筒内の吸引方向下流側に向けて噴出される空気により空気の流れ方向に吸引力を発生させるエジェクタ本体部30と、吸引方向上流端に吸引口41が設けられると共に、吸引方向下流端を外筒31の噴出口37よりも吸引方向上流側に接続され、吸引力により吸引口41から表土を吸引する吸引管40と、エジェクタ本体部30の吸引方向下流側に設けられて表土を収容る収容部60とを備えた。【選択図】図2
