Defibration treatment apparatus and fiber processing apparatus

Patent metadata

Field	Value
Publication number	US-11162215-B2
Application number	US-202016822158-A
Country	US
Kind code	B2
Filing date	Mar 18, 2020
Priority date	Mar 20, 2019
Publication date	Nov 2, 2021
Grant date	Nov 2, 2021

Abstract

A defibration treatment apparatus including a feeding hole through which a material is fed, a rotator that rotates about a rotational central axis, a fixed member that covers at least a portion of the rotator, and a discharge opening that discharges a defibrated object obtained by defibrating the material between the rotator and the fixed member. In the defibration treatment apparatus, the rotator includes a plurality of rotary blades that extend in directions away from the rotational central axis, at least a portion of the fixed member is configured of a screen including a plurality of openings, the screen is disposed at a position corresponding to an outer rotational circumference of the rotator, and a discharge path in communication with the discharge opening is provided along the screen and on a side opposite the rotator with respect to the screen.

First claim

What is claimed is:

1. A defibration treatment apparatus comprising:
a feeding hole through which a material is fed;
a rotator that rotates about a rotational central axis and performs a dry defibration treatment on the material which has been fed through the feeding hole, the rotator including a plurality of rotary blades that extend in directions away from the rotational central axis;
a fixed member that covers at least a portion of the rotator, at least a portion of the fixed member being configured of a screen including a plurality of openings, the screen being disposed at a position corresponding to an outer rotational circumference of the rotator;
a discharge opening that discharges a defibrated object obtained by defibrating the material between the rotator and the fixed member; and
a discharge path part in communication with the discharge opening, the discharge path part being provided along the screen and on a side opposite the rotator with respect to the screen the discharge path part including a bent portion that extends along an outer circumferential portion of the screen, the bent portion having a cross-sectional area that becomes larger as the bent portion approaches the discharge opening.

2. The defibration treatment apparatus according to claim 1 , further comprising an air suction path part that is configured to take in a gas and to which the discharge path is, at a position away from the discharge opening, coupled.

3. The defibration treatment apparatus according to claim 2 , further comprising an air sending device that sends a gas from the air suction path part to the discharge path part and is coupled to the air suction path part.

4. The defibration treatment apparatus according to claim 1 , wherein
the discharge path part has an arc shape so as to surround the screen.

5. A fiber processing apparatus comprising:
the defibration treatment apparatus according to claim 1 ; and
a processing portion that processes the defibrated object that has been obtained by defibrating the material in the defibration treatment apparatus.

Assignees

• Seiko Epson Corp

Inventors

• Inagaki Yuta
• Omagari Naoko
• Nakamura Masahide
• Yamasaki Keigo

Classifications

• Y02W30/64

  Paper recycling · CPC title

• D21B1/061 Primary

  using cutting devices · CPC title

• D04H1/732

  by fluid current, e.g. air-lay · CPC title

• D21F9/04

  of the cylinder type · CPC title

• D21B1/063 Primary

  using grinding devices · CPC title