ES337641A1 - Improvements in foam projector launches. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements in projecting lances of foam, used in the extinguishing of fires, of the type that generates the foam inside the body of the lance, especially characterized, by presenting at the end of the rear tube 11, a plug-connector 14, a a pressurized water injection hose against the opening 18 of the inlet ejector 12, facing the hole 19, of the outlet ejector 10, between which chamber 17 a suction effect is produced, which sucks the foamable mixture, through the of aspiration 16, equipped with a regulating pre-passage key connected to a flexible tube, immersed in a tank containing the foamable solution; for presenting the chamber 17, holes communicating with another chamber, which has a disc provided with a series of inclined holes 5, converging towards the axis of the lance, whose disc or plate, acts as a spout 8, which pours into the chamber 20, of air intake, inside which the foamable solution is mixed, of the spout 8, with the central jet of water, which receives from the hole 19, in line, of the outlet ejector 10, which pass, rapidly towards the conical body 13, and from this to the central tube 4, not without first suction-pulling, a quantity of air, through the openings 7, made to the object, on the perimeter of the body 6, for the intake of air; to be completed inside the central tube 4, the mixture of the foamable solution, with the pressurized water and with the entrained air, to then pass through a wire grid 3, supported by the ring 9, through the body conical 15, towards the outlet tube 1, which projects it to its destination; by presenting a handle 2, of support and direction, fixed to the exterior of the conical body 15. (Machine-translation by Google Translate, not legally binding)