US 12,215,462 B2
Refiner
Makoto Goto, Shizuoka (JP); and Makoto Suzuki, Shizuoka (JP)
Assigned to AIKAWA IRON WORKS CO., LTD., Shizuoka (JP)
Filed by AIKAWA IRON WORKS CO., LTD., Shizuoka (JP)
Filed on Jan. 24, 2022, as Appl. No. 17/583,143.
Claims priority of application No. 2021-185514 (JP), filed on Nov. 15, 2021.
Prior Publication US 2023/0151543 A1, May 18, 2023
Prior Publication US 2024/0242605 A9, Jul. 18, 2024
Int. Cl. D21D 1/00 (2006.01); D21D 1/30 (2006.01); D21D 1/38 (2006.01)
CPC D21D 1/30 (2013.01) [D21D 1/002 (2013.01); D21D 1/38 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A refiner for beating a raw material, the refiner comprising:
a rotating shaft extending in an axial direction;
a rotor beating part including:
a main body attached to the rotating shaft, and
a rotary blade on an end face of the main body, the rotary blade extending from an outer periphery of the main body toward the rotating shaft in a radial direction of the rotating shaft;
a stator beating part including:
a first ring-shaped body, and
a fixed blade on an end face of the first ring-shaped body facing the main body, the fixed blade extending from a center of the end face to an inner periphery of the first ring-shaped body, wherein a tip of the fixed blade and a tip of the rotary blade overlap each other in the axial direction;
a second ring-shaped body positioned on an outer side of the first ring-shaped body in the radial direction, the second ring-shaped body including a slit for discharging the raw material beaten by the stator beating part and the rotor beating part;
a motor configured to drive the rotating shaft; and
a motor control part configured to control the motor to beat the raw material by causing a variable rotation of the rotor beating part according to the raw material, wherein the raw material includes materials having short fibers or no stiffness.