Batch dyeing system with automatic chemical-dosing and pH control system

An immersion dye system with automatic chemical input and pH value control, comprising:

• a dye machine containing a dye liquor,
• a pH gauge measuring pH value of the dye liquor,
• a thermometer measuring a temperature of the dye liquor,
• a chemical tank containing a dye chemical, the chemical tank being in controllable fluid communication with the dye machine,
• a continuous action depth gauge being installed in the chemical tank and measuring level of the dye chemical therein,
• supplying means providing said fluid communication and conducting the dye chemical from the chemical tank to the dye machine, and
• a controller receiving measurements from said pH gauge, thermometer and depth gauge and having pH value control and volume control modes of operation, desired pH values and dye chemical input parameters being input in the controller during the pH value control mode of operation and the volume control mode of operation, respectively;
• said supplying means further including:
• a chemical input pump connected to an output of the chemical tank,
• a mixing valve connected to an output of the chemical tank and mixing the dye liquid flowing from the chemical tank, and
• a chemical input valve positioned between the chemical input pump and the dye machine;
• said controller controlling operation of said chemical input pump, mixing valve and chemical input valve according to said desired pH values and dye chemical input parameters and in response to said measurements received from the pH gauge, thermometer, and depth gauge.