METODO PER PROTEGGERE UN LIQUIDO DALL'OSSIDAZIONE, ED APPARECCHIATURA PER TALE METODO

Device for protecting a liquid from oxidation inside a container having an aperture at one end thereof and comprising first means for supplying said liquid inside said container, second means for supplying said liquid outside said container and at least one control unit. There are also provided pneumatic control means at least partially housed into said container and intended to produce an overpressure inside said container and on said liquid when the latter is supplied to the outside, the arrangement being such that following a decrease in the volume of the liquid inside the container, said pneumatic control means increase their volume by an amount equal to the change in the volume of said liquid. The pneumatic control means comprise a variable capacity tank and a pipe supplying and discharging a fluid for filling said tank; there are also provided supply and discharge means for the filling fluid which are connected to said pipe and a supporting structure, which fastens and holds in place the pneumatic control means inside the container. The overall dimensions of said pneumatic means in a direction perpendicular to the axis of the aperture of the container, at least in the collapsed or empty condition of said variable capacity tank, are smaller than the passage port of the aperture of the container, while the supporting structure has means for being fastened to the aperture of the container and the pneumatic control means are fastened to the supporting structure as to overhang into the container.