Pulper

Abstract

A pulper includes a tank having a papermaking material insertion port and a discharge port; a strainer covering the discharge port of the tank; a rotor provided above the strainer for disintegrating the papermaking material and having a rotor vane with a front edge formed linearly in a plan view; a front cutter blade attached to a back surface of the rotor, and extending long in a longitudinal direction along the front edge of the rotary vane, the front cutter blade being formed linearly in a plan view; and an inclined cutter blade attached to the back surface of the rotor. The inclined cutter blade extends long in the longitudinal direction and is inclined away from the front cutter blade toward an outside. The inclined cutter blade and the front cutter blade are integrally formed via an inner portion of the inclined cutter blade.

What is claimed is: 
     
         1 . A pulper comprising:
 a tank for receiving the papermaking material and water, including a papermaking material insertion port in an upper portion and a discharge port in a lower portion;   a strainer covering the discharge port of the tank;   a rotor provided above the strainer of the tank, the rotor disintegrating the papermaking material and having a rotor vane with a front edge formed linearly in a plan view;   a front cutter blade attached to a back surface of the rotor, the front cutter blade extending long in a longitudinal direction along the front edge of the rotary vane, the front cutter blade being formed linearly in a plan view; and   an inclined cutter blade attached to the back surface of the rotor, the inclined cutter blade extending long in the longitudinal direction and being inclined away from the front cutter blade toward an outside,   wherein the inclined cutter blade and the front cutter blade are integrally formed via an inner portion of the inclined cutter blade.   
     
     
         2 . A pulper comprising:
 a tank for receiving the papermaking material and water, including a papermaking material insertion port in an upper portion and a discharge port in a lower portion;   a strainer covering the discharge port of the tank;   a rotor provided above the strainer of the tank, the rotor disintegrating the papermaking material and having a rotor vane;   a front cutter blade attached to a back surface of the rotor, the front cutter blade extending long in a longitudinal direction along a front edge of the rotary vane; and   an inclined cutter blade attached to the back surface of the rotor, the inclined cutter blade extending long in the longitudinal direction and being inclined away from the front cutter blade toward an outside,   wherein the inclined cutter blade and the front cutter blade are integrally formed via an inner portion of the inclined cutter blade,   the inclined cutter blade and the front cutter blade are also connected to each other via a flat surface, and   the flat surface contacts with the back surface of the rotor.   
     
     
         3 . A pulper comprising:
 a tank for receiving the papermaking material and water, including a papermaking material insertion port in an upper portion and a discharge port in a lower portion;   a strainer covering the discharge port of the tank;   a rotor provided above the strainer in the tank, the rotor disintegrating the papermaking material and having a rotary vane;   a front cutter blade attached to a back surface of the rotor, the front cutter blade extending long in a longitudinal direction along a front edge of the rotary vane;   an inclined cutter blade attached to the back surface of the rotor, the inclined cutter blade extending long in the longitudinal direction and being inclined away from the front cutter blade toward an outside; and   a flat surface connecting the inclined cutter blade to the front cutter blade, the flat surface contacting with the back surface of the rotor.