Defibrator with separated blow valve

Abstract

The invention relates to a pulp refining system for mechanically refining of lignocellulosic material, comprising a defibrator, a defibrator housing, in which the defibratoris arranged, a blow valve having an inlet and an outlet and being adapted for regulating a flow of pulp therethrough, and a discharge pipe having an inlet, which is connected to the outlet (12) of the blow valve, wherein a mounting pipe having an inlet, which is connected to the defibrator housing, is arranged between the defibrator housing and the blow valve, said mounting pipe having a length of at least about 0.2 meter.

1 . A pulp refining system for mechanically refining of lignocellulosic material, comprising:
 a defibrator,   a defibrator housing, in which the defibrator is arranged,   a blow valve having an inlet and an outlet and being adapted for regulating a flow of pulp therethrough, and   a discharge pipe having an inlet which is connected to the outlet of the blow valve, characterized in that a mounting pipe having an inlet, which is connected to the defibrator housing, is arranged between the defibrator housing and the blow valve, said mounting pipe having a length (L) of at least about 0.2 meter.   
     
     
         2 . The pulp refining system according to  claim 1 , characterized in that the length (L) of the mounting pipe is at least about 0.5 meter. 
     
     
         3 . The pulp refining system according to  claim 1 , characterized in that the length (L) of the mounting pipe is such that 0.2 m≤L≤1.5 m. 
     
     
         4 . The pulp refining system according to  claim 1 , characterized in that the mounting pipe is provided as a separate component. 
     
     
         5 . The pulp refining system according to  claim 1 , characterized in that the mounting pipe is configured as an inlet portion of the blow valve. 
     
     
         6 . The pulp refining system according to  claim 1 , characterized in that the mounting pipe is configured as a combination of a separate component and an inlet portion of the blow valve. 
     
     
         7 . The pulp refining system according to  claim 1 , characterized in that the length of the mounting pipe is measured from the defibrator housing to a closest side of a valve member arranged in the blow valve. 
     
     
         8 . The pulp refining system according to  claim 1 , characterized in that the mounting pipe has a cross-section, which is essentially equal, both in shape and size, to the cross-section of an interior flow channel in the blow valve.