| 摘要 |
PROBLEM TO BE SOLVED: To provide a selective intake device capable of improving the intake performance while miniaturizing in a simple structure. SOLUTION: This device comprises a selective intake mechanism 5 allowing a selective intake by raising the top pipe 11 of a laminated pipe 10 through a lifting beam 26 and a connecting tool 21 by use of a lifting mechanism 50, thereby successively separating each pipe 11-14 of a laminated pipe 10 from above while regulating the separating distance by connecting tools 22-25 to successively form openings M from above to under.
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