| 摘要 |
PURPOSE: A gas exhaust device of a picking tank is provided to prevent a contamination of a transparent window member by mounting a second guide duct on end which allows water which absorbs the hydrogen chloride not to directly contact the transparent window member part. CONSTITUTION: A gas exhaust device of a picking tank(1) comprises a fume exhaust duct member(10), an water jet apparatus(20), and a transparent window member(30). The fume exhaust duct member is connected to a pickling tank and discharges the fume which is generated in the pickling tank. The water jet apparatus is mounted in the fume exhaust duct member and jets water in the fume exhaust duct. The transparent window member is mounted at the fume exhaust duct member. |
