| 摘要 |
A method and apparatus for separating water and solvent from a mixture of said liquids used in a developing machine (1) for printed boards in which the printed boards are treated with a solvent as a developing liquid and thereafter with clean water to interrupt the developing process by removing the solvent from the printed boards, the solvent having a density above 1.2 g/cm<3>, being insoluble in water and occuring in the mixture as small particles, said water-solvent mixture being treated in a main filter comprising a filter house (12) and a filter body (17) arranged therein in the form of a coalescence filter. According to the invention said water-solvent mixture is fed continuously from the developing machine (1) to the main filter in a circulation system simultaneously as a water phase, which is free from particles and drops of solvent, is continuously discharged from the filter house (12) through an upper outlet (27) and is directly returned to the developing machine (1) to be re-used in a closed cycle. |
