B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
209/116
B07B 1/00 (2006.01) D21D 1/38 (2006.01)
Patent
CA 1053184
ABSTRACT OF THE DISCLOSURE Apparatus for defibering fibrous suspensions of the type including a horizontal hollow cylinder disposed within a housing, and a rotor coaxial with the cylinder and disposed inside same, the rotor being of the type including at its periphery defibering projections. The stock enters at one axial end of the rotor. The portion of the rotor near the inlet is surrounded by a first annular section of the cylinder. At least the lowermost segment of the first annular section is in the form of a screen. Spaced axially downstream of the inlet section of the rotor is a second section thereof, which is provided with said defibering projections. In a third section disposed axially downstream of the second section, the rotor is of a generally frusto-conical configuration convergent in the downstream direction. Diluting water is introduced into the third section to facilitate removal of rejects from same. Accordingly, partial dewatering of the stock takes place upstream of the defibering section of the machine to increase efficiency of the apparatus.
274232
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