grooves 3 are provided in the shoulders 5 instead of the groove 3 shown in fig1 a through borehole can be provided in the shoulders 5 for connecting both the catching nozzle sections 17 1 and 17 2 two screw shaped ribs 4 1 and 4 2 are arranged on the downstream catching nozzle section 17 2 as shown in fig1 the functioning of the individual components of the catching nozzle 1 is described in details later on a possible embodiment of a powder conveying device is shown in a cross section in fig2 the conveying air fl flows through the conveying air inlet 13 into the powder conveying device and ensures in the inside that the powder is suctioned through the powder inlet 15 into the powder conveying device the powder air mixture formed from the conveying air fl and the powder is now led through the catching nozzle 1 arranged in the downstream end of the powder conveying device the catching nozzle 1 is arranged in such a way in the powder conveying device that its upstream catching nozzle section 17 1 is located in a borehole 19 of the powder conveying device and the downstream catching nozzle section 17 2 of the catching nozzle 1 protrudes from the housing 9 of the powder conveying device a hose socket 11 is put over the downstream catching nozzle section 17 2 of the catching nozzle 1 and such hose socket 11 is fixed together with the catching nozzle 1 on the housing 9 of the powder conveying device by means of a union nut 10 the powder conveying.