FIELD: process engineering.
SUBSTANCE: invention relates to water softening plant. Proposed plant comprises automatically controlled device for mixing the mixed water flow V(t)verschnitt from first softened partial flow V(t)teil1weich and second flow V(t)teil2roh containing initial water. Is includes electronic control device to be tuned by one or several instantaneous measurement magnitudes, defined experimentally, to regular said mixing device so that water hardness of mixed flow V(t)verschnitt is set to predefined rated vale SW. Note here that said control device in some preset working situations ignores at least one or several instantaneous measurement magnitudes to regular said mixing device. Apart, it proceeds from the last significant appropriate measurement magnitude before origination of preset working situation or standard magnitude for appropriate measurement magnitude stored in memory of electric control device.
EFFECT: decreased wear of automatically controlled mixer.
23 cl, 2 dwg, 2 tbl
