Problem to be solved: to provide a gas suction safety hole body capable of preventing the strokes falling in the gas suction and adjusting the gas suction quantity.Solution: the lid plate 2 is placed in the hydrogen purification vessel 1, and the gas suction safety hole body 3 is placed thereon and the straw 4 is inserted. A through-hole of two-stage structure is provided inside the gas intake safety hole body, and the through hole of the upper stage is made larger than the diameter of the straw, and the through hole of the lower stage is made smaller than the diameter of the straw, thereby preventing the straw from falling.Further, by adjusting the angle of the gas intake safety hole body, the clearance between the hole of the lid plate and the through hole of the gas intake safety hole body can be narrowed, so that the amount of gas can be freely adjusted.Diagram【課題】気体吸入時のストローの落下の防止と気体吸入量の調整を行える気体吸入安全孔本体を提供する。【解決手段】水素精製容器1に蓋板2を設置し、その上に気体吸入安全孔本体3を置きストロー4を、挿入する。気体吸入安全孔本体の内部に2段構成の貫通穴を設け、上段の貫通穴をストローの直径より大きくし、下段の貫通穴をストローの直径より小さくすることにより、ストローの落下を防止する。また、気体吸入安全孔本体の角度を調整する事により蓋板の穴と気体吸入安全孔本体の貫通穴の間の隙間が狭まり、気体の吸入量を自在に調整できる。【選択図】図1
