초록 ▼

A liquid mixing system and method are disclosed for automatically preparing a batch mixture containing predetermined quantities of liquids such as spray dampening solutions or silicone emulsions used in the printing industry. The system comprises a holding tank having one or more liquid columns in l

A liquid mixing system and method are disclosed for automatically preparing a batch mixture containing predetermined quantities of liquids such as spray dampening solutions or silicone emulsions used in the printing industry. The system comprises a holding tank having one or more liquid columns in liquid communication with the tank so that the level of liquid in the column, or columns, will be the same as the level of the liquid in the tank. Liquid level detection devices preferably in the form of static capacity-type proximity switches sense the level of the liquid in the column, or columns, and liquid charging devices responsive to the liquid level detection devices charges the liquids into the tank in seriatum each time raising the level of the liquid in the tank and in the columns to the next detected level. The tank liquids are mixed preferrably by an external mixing device which also operates to discharge the liquid mixture from the tank through a three-way valve operating in response to the liquid detection devices.

대표청구항 ▼

A system for automatically preparing a batch mixture of liquids, said system comprising a liquid holding tank, a plurality of liquid columns outside of said tank and in fluid communication with said tank, whereby the level of liquid in said columns will be the same as the level of liquid in said tan

A system for automatically preparing a batch mixture of liquids, said system comprising a liquid holding tank, a plurality of liquid columns outside of said tank and in fluid communication with said tank, whereby the level of liquid in said columns will be the same as the level of liquid in said tank, liquid level detection means outside of said tank and said columns for detecting liquid in said columns at each of several predetermined levels, said liquid level detection means including a static capacity type proximity sensor for each of said columns and for each of said predetermined levels, at least one of said sensors being vertically movable relative to another of said sensor, liquid charging means responsive to said liquid level detection means of charging separately and in seriatum a plurality of liquids into said tank, each in a predetermined quantity sufficient to raise the liquid in the column from one predetermined level to the next, and liquid transport means responsive to said liquid level detection means for mixing the liquids which have been charged into the tank and for discharging the liquid mixture from the tank after the liquids have been charged into the tank and mixed.