Concrete-spraying nozzle for foamed concrete, foamed mortar or the like

摘要

The invention relates to a concrete-spraying nozzle for foamed concrete, having a nozzle mouthpiece which can be connected to a concrete-conveying line for dry concrete and has a water-inlet opening for connection to a water-supply line. The nozzle mouthpiece exhibits a push-in end for pushing into a connecting sleeve which can be connected to the conveying line. Between the push-in end and the connecting sleeve, an annular gap is formed which connects the interior space of the nozzle to an annular chamber in the connecting sleeve. A foam-conveying line for supplying ready prepared foam under a predetermined pressure is connected to the annular chamber. As a result, foamed concrete can be sprayed after dry conveying which is effected as far as the concrete-spraying nozzle. <IMAGE>