Micronizing apparatus for hydrogel of super absorbent polymer

A micronizing apparatus for hydrogel of super absorbent polymer comprising:

• a source of hydrogel is the super absorbent polymer;
• a body having a transfer space where the hydrogel is transferred, and a discharge space where ground hydrogel is discharged;
• a rotation shaft disposed in the transfer space, wherein at least one screw is formed on an outer perimeter surface of the rotation shaft, to transfer the hydrogel along a longitudinal direction of the body;
• a rotor installed on the rotation shaft so as to rotate together with the rotation shaft, wherein a plurality of rotor blades and a plurality of rotor recesses are alternately formed along a circumferential direction on an outer perimeter part of the rotor;
• and
• a stator surrounding the rotor with an air gap between the rotor and the stator, which is a predetermined distance between an outside diameter of the rotor and an inside diameter of the stator, and is fixed to the body, wherein a plurality of stator blades and a plurality of stator recesses are alternately formed along the circumferential direction;
• wherein the hydrogel transferred to the rotor by the screw moves radially and outwardly by centrifugal force and passes through the rotor recesses, is cut and/or ground in the air gap between the rotor and the stator, and is discharged to the discharge space through the stator recesses,
• wherein the air gap between the rotor and the stator is smaller than a width of at least one of the stator recesses,
• wherein a width of each of the stator recesses at least partially increases radial outwardly, and
• wherein the super absorbent polymer is prepared from a compound represented by the following Chemical Formula 1:
• R1—COOM1 [Chemical Formula 1]
• in the Chemical Formula 1,
• R1 is a C2-5 alkyl group comprising unsaturated bond,
• M1 is a hydrogen atom, monovalent or divalent metal, an ammonium group or an organic amine salt.

A micronizing apparatus for hydrogel of super absorbent polymer comprising:

• a source of hydrogel is the super absorbent polymer;
• a body having a transfer space where the hydrogel is transferred, and a discharge space where ground hydrogel is discharged;
• a rotation shaft disposed in the transfer space, wherein at least one screw is formed on an outer perimeter surface of the rotation shaft, to transfer the hydrogel along a longitudinal direction of the body;
• a rotor installed on the rotation shaft so as to rotate together with the rotation shaft, wherein a plurality of rotor blades and a plurality of rotor recesses are alternately formed along a circumferential direction on an outer perimeter part of the rotor;
• a stator surrounding the rotor with an air gap between the rotor and the stator, which is a predetermined distance between an outside diameter of the rotor and an inside diameter of the stator, and is fixed to the body, wherein a plurality of stator blades and a plurality of stator recesses are alternately formed along the circumferential direction;
• at least one cutter attached to the rotation shaft, located between the screw and the rotor, and rotating together with the rotation shaft;
• and
• at least one hole plate spaced from the at least one cutter by a predetermined distance, installed in the body, and having a plurality of through holes;
• wherein the hydrogel transferred to the rotor by the screw moves radially and outwardly by centrifugal force and passes through the rotor recesses, is cut and/or ground in the air gap between the rotor and the stator, and is discharged to the discharge space through the stator recesses,
• wherein a diameter of the through hole is smaller than a width of at least one of the rotor recesses, and
• wherein the super absorbent polymer is prepared from a compound represented by the following Chemical Formula 1:
• R1—COOM1 [Chemical Formula 1]
• in the Chemical Formula 1,
• R1 is a C2-5 alkyl group comprising unsaturated bond,
• M1 is a hydrogen atom, monovalent or divalent metal, an ammonium group or an organic amine salt.