| 摘要 |
<p>A foam spraying device, which is capable of being driven by compressed air of medium pressure and particularly is meant for spraying of soap or other substance to be sprayed as foam, is of the kind, by which the foam substance is contained within a receptacle being kept under pressure, and where compressed air being controllable by means of a valve is suppliable to or near to a spray nozzle, and where the spray gun through a substance carrying line which comprises a regulating valve is connected with the receptacle containing the substance. A foam spraying device is described, by which besides the compressed air regulating valve (34) a further compressed air regulating valve (24) is positioned which is inserted between an output (19) from a compressed air supplying pressure reducing valve (13) and the substance carrying line (4) between the receptacle (2) with the substance and the spray gun (28, 36). A compact apparatus exhibiting a good consistency of the foam and controllability hereof is attained, and with the, at medium pressure well functioning, device formation of poisonous aerosols is avoided, which aerosols else become generated by high pressure foam spraying devices. </p> |
