Method for Monitoring a Nozzle Mouthpiece for Placing On a Nozzle

A method for monitoring a nozzle mouthpiece with regard to deposits on a nozzle for spraying substances, comprising:

• a nozzle body which has a nozzle mouthpiece,
• wherein the nozzle body comprises an inner pipe, said inner pipe being connected to a feed for the substance to be sprayed and comprising an inner wall and an exit opening, and an outer pipe said outer pipe being distanced to the inner pipe, being connected to a feed for a gas and comprising an exit opening,
• wherein the exit opening of the inner pipe and the exit opening of the outer pipe are arranged in the region of the nozzle mouthpiece,
• wherein an inlay is arranged on the inner pipe or on the outer pipe, wherein the inlay is arranged such that it can be brought or is brought into oscillation by way of the substance to be sprayed which exits out of the exit opening of the inner pipe and/or by way of the gas which flows out of the exit opening of the outer pipe, in order to minimise or prevent deposits in an exit region of the substance to be sprayed and/or of the gas, wherein a sensor which is connected to a control unit, wherein the method comprises:
• monitoring the nozzle mouthpiece with regard to deposits and transmits signals to the control unit and given a deposition in the exit region of the substance to be sprayed and/or of the gas, said deposition being determined by the sensor;
• and
• transmitting by the control unit, a signal to a device.