APPARATUS FOR PRETREATING FIBROUS MASS WITH FOLLOWING FEEDING TO SUBSEQUENT MACHINES Russian patent published in 2001 - IPC

FIELD: mechanical engineering. SUBSTANCE: apparatus has feeding cylinder mounted for rotation and embraced with first and second-type band saws arranged in alternation. Second-type band saw is equipped with teeth oriented in opposite directions. Disintegrating drum cooperating with feeding cylinder is equipped with fittings. Apparatus is further provided with second feeding cylinder embraced with band saw mounted for cooperation with first feeding cylinder and disintegrating drum. First and second feeding cylinder band saws are attached on respective surfaces so as to form closed rings. Band saw teeth of second feeding cylinder are inclined in rotation direction opposite to rotation direction of first feeding cylinder band saw. Band saw rings of second feeding cylinder are offset with respect to band saw rings of first feeding cylinder in direction of axes of feeding cylinders. Second feeding cylinder is positioned for rotation at speed substantially exceeding that of first feeding cylinder and substantially smaller than that of disintegrating drum. Apparatus allows fibrous mass to be treated at moderate treatment mode. EFFECT: increased efficiency by improved fibrous mass disintegrating extent and increased quality and uniformity of treated fibrous mass. 2 cl, 5 dwg