Patent ID: 6076273
Filing Date: 2000-06-20
Classification: C14B,F26B

Abstract:
Stabilized vacuum apparatus for industrial hide driers with multiple evaporation beds, comprising a main vacuum source (P.sub.A) that can be connected to a series of evaporation beds (1; 1'; 1"") in order to create a negative pressure having a preset value in said beds, in steady-state conditions; characterized in that it has a secondary vacuum source (P.sub.B) which is suitable to produce, in one bed at a time, a negative pressure whose value is close to that of the steady-state conditions, a valve means being provided to selectively connect each bed, which is initially at ambient pressure, first to said secondary vacuum source (P.sub.B) and then to said main vacuum source (P.sub.A) so as to eliminate substantial pressure variations in the remaining beds when each bed is connected to the main vacuum source.