Plants for impregnation under pressure from solid wood, wood materials and other poroesematerialer with liquid

摘要

It permits the impregnation according to the double-vacuum, the vacuum-pressure and the Lowry processes, in particular for the protective treatment of solid wood and wooden materials with liquids for protection against biological and atmospheric damage. In known apparatus of this type, the time required for filling and emptying the impregnation cylinder is quite considerable, so that, apart from the variation in absorption due to the material, further variation in absorption results from the impregnating process itself. In the apparatus according to the invention, the cross-section of the connecting line (d) between the impregnation vessel (JG) and the supply vessel (VG) arranged above it is dimensioned in such a way that a period of only 6 minutes, preferably 4 minutes, is sufficient to completely fill the impregnation vessel. The same pipe dimensioning and therefore also the same times apply to the emptying of the impregnation vessel, for which a collecting vessel (AG) is arranged below the same, so that during both the filling and emptying of the impregnation vessel the free fall of the liquid can be utilised and thus work can be carried out in an energy-saving manner. IMAGE