Shielding material collecting nozzle, shielding vessel, and shielding material collecting device and method

摘要

A shielding material collecting nozzle includes: a nozzle main body (81) having an opening (91); a covering portion (82) which is provided so as to cover a part of the opening (91) and through which a fluid can pass and a shielding material cannot pass; and a passing portion (83) which is provided outside a region covered with the covering portion (82) in the opening (91) and through which the fluid and the shielding material can pass.