| 摘要 |
Device for dosing dyes in solution or dispersion for the preparation of dye baths for textile materials, comprising a plurality of pipettes (1) individually connected to corresponding bottles or containers (6) containing the said dyes, the said bottles or containers being respectively connected to a dosing head (8) through corresponding ducts (9) from which the dyes exit. The device comprises programmable means (EU) which individually control the said pipettes (1) and respective electrovalves (4) and which, depending on the formulation programmed to realize a dye bath, operate the automatic subdivision or selection of the electrovalves (4) in two groups. A first group of electrovalves (4) initially connect the respective bottles (6) with the corresponding pipettes (1) through the ducts (5) and (7), as the electrovalves (4) of the second group, and in a subsequent step connect the respective pipettes (1) with the dosing head (8) through the ducts (5) and (9) and then restore the individual links once the dosing is completed; the electrovalves (4) of the second group constantly maintain the connection between the respective pipettes (1) and the corresponding bottles (6).
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