Yi Seed Yin Liu Installed are set, it mainly includes a drainage Single members and a check Single members, The, which drains Single members, has Yi Rong Installed Kong Inter, Yi Even lead to the external draining hole for Yi Ye Body introducings Ji Yi Even lead to the drainage channel of The Rong Installed Kong Inter With The draining holes, The check Single Yuan Department Let set the drainage channel Inner of what The drainage Single members, When Ye Body are from The draining hole Wang Rong Installed Kong Inter direction Cis Liu Time, The check Single Yuan Department Cheng Open put Like states, so that Ye Body energy Cis flows into what The Rong Installed Kong Inter Inner sharply, When Ye Body are from The Rong Installed Kong Inter toward draining hole direction Ni Liu Time, The check Single Yuan Department Cheng Off Closed Like states, to prevent liquid Body from flowing to The draining holes.一種引流裝置,其主要包含有一引流單元及一逆止單元,該引流單元具有一容裝空間、一連通外部以供一液體引入之引流口及一連通該容裝空間與該引流口之引流通道,該逆止單元係設置於該引流單元之引流通道內,當液體自該引流口往容裝空間方向順流時,該逆止單元係呈開放狀態,以使液體能順利地流入於該容裝空間內,當液體自該容裝空間往引流口方向逆流時,該逆止單元係呈關閉狀態,以防止液體流向該引流口。