MIXING HEAD FOR MANY COLOURED SUBSTANCES

The invention relates to a device for mixing more than two coloured substances and/or components (Fi). Said device comprises a base body (23) which is provided with a mixing chamber (25) wherein several supply channels (Zi), which are used to introduce colours and/or components (Fi) into the mixing chamber (25), end. The supply channels (Zi) can be closed by means of needle valves (24). Conveying devices (Pi) convey the components (Fi) from the associated storage container thereof to respective supply channel (Zi). The components flow back into the storage container i.e. recirculate, when the valve needle (24) is closed. A valve (27) selectively connects the conveyor device (Pi) to the associated supply channel (Zi) or to the storage container (R). At least one device (Di), which is used to adjust and/or regulate predeterminable pressure in a connection line between the conveying device (Pi) and the valve (27) is arranged in a line between a valve (27) and the associated storage container (R). A measuring device (Mi) determines the pressure in the respective connection line between each conveying device (Pi) and the associated valve (27) and a control device controls the respective device (Di) by means of the determined pressure.