In situ dye jet back washing apparatus and method

Abstract From the Canadian patent

Method and apparatus to lessen the tendency of foreign matter to clog the jets of a dyeing machine by recirculating the dye and filtering same on each recirculation. Apparatus is provided to periodically wash the dye jets to eliminate periodic clogging of the dye jets. The washing apparatus includes a carriage supporting a washer orifice, the carriage being moveable along mounting means connected to the frame of the apparatus and spaced from the gun bar carrying the dye jets. The washing fluid is supplied to the washer orifice at pressure sufficient to overcome the pressure of normal dye flow through the jets so that back washing occurs during otherwise normal flow of dye from the gun bar.