| 摘要 |
PURPOSE:To maintain the specified flow rate of a treating liquid and to permit the quick discharge of deposited metals, fine dust, etc., by segmenting a treatment vessel body by two sheets of perforated plates to upper, middle and lower parts and injecting the surface treating liquid toward the intermediate part from the lower part. CONSTITUTION:The surface treating liquid 2 is introduced into the vessel body 4 from an introducing port 1 provided to the center of a bottom plate 3. The vessel body 4 is segmented by the perforated plates A10, B11 to the lower part 14, the intermediate part 13, and the upper part 12. The surface treating liquid 2 introduced into the vessel fills the lower part 14 and is injected from the small holes of the plate A10 to the part 13 to fill the part 13' thereafter, the liquid flows from the holes of the plate B11 gently to the upper part 12. The treating liquid 2 arriving at an aperture 6 is discharged to an overflow part 5. Works 7 are immersed into the upper part 12 and are brought into contact with the surface treating liquid flow 9 rising at a uniform flow rate. Excursion flow is eliminated by such mechanism, by which the deposited metals, fine dust, dirt, etc., are quickly discharged.
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