| 摘要 |
PURPOSE:To perform filtering reducing the mixing of solid components by a simple and inexpensive structure, in a liquid drain apparatus for taking out a liquid from a liquid tank storing a dirty liquid containing solid components, by utilizing the capillary sucking-up action by a nonwoven fabric. CONSTITUTION:A nonwoven fabric 5 mainly sucks up a liquid from the dirty liquid 4 in a liquid tank 1 and guides said liquid to the outside of the liquid tank 1 to fall the same in a drain pit 7. The solid component of the dirty liquid 4 is sedimented to the bottom of the liquid tank 1 during this time to be accumulated thereon but, because the sucking-up of the nonwoven fabric is performed over the entire suspended part of the nonwoven fabric 5 in the liquid, there is almost no effect of the sedimentation of the solid component. The drain liquid fallen to the drain pit 7 through the nonwoven fabric 5 is markedly lowered in the content of the solid component by the filtering action of the nonwoven fabric 5. The nonwoven fabric 5 can be easily replaced if necessary.
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