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Cleaning notches and passages for a feeding or refining element

A notch and feeding technology, applied in the fields of application, textile and papermaking, fiber raw material processing, etc., can solve the problems of reducing the attractiveness and sales value of the final product, and achieve the effect of eliminating fiber accumulation

Inactive Publication Date: 2020-10-02
ANDRITZ AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pulp material with dark spots reduces the attractiveness and sales value of the final product

Method used

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  • Cleaning notches and passages for a feeding or refining element
  • Cleaning notches and passages for a feeding or refining element
  • Cleaning notches and passages for a feeding or refining element

Examples

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Embodiment Construction

[0023] FIG. 1 shows a cross-section of a conventional single-disk refiner 10 having a housing 12 defining an internal chamber 14 . The rotor disk assembly 16 in the chamber is turned by a shaft 18 driven by a motor. The rotor disk assembly comprises an annular assembly of a support disk 20 , a circular flinger plate 22 attached to the front face of the support disk 20 and a pie-shaped refiner plate segment 24 mounted to the front face of the support disk 20 . The inner edge of the refiner plate segment is adjacent to the outer periphery of the slinger plate 22 .

[0024] A similar annular array of plate segments 26 is arranged on a support disc 28 of the stator disc assembly fixed to the housing. Alternatively, annular refiner plates may be used instead of an annular array of plate segments. Furthermore, the refiner plates or plate segments may be arranged in pans that generally conform to the plane of a disc refiner, or as frusto-conical plates or frusto-cones for plate seg...

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Abstract

A flinger or refiner plate for a mechanical refiner including deep notches or holes in feeder bars of the flinger plate and / or open passages or holes in bars of the refiner plate. The open passages and / or holes in the bars significantly reduce stagnate flow zones at the trailing side of the bars during operation of the mechanical refiner. The reduction of the stagnate flow zones may reduce or eliminate fiber accumulation at the trailing side of the bars.

Description

[0001] related application [0002] This application claims priority to US Provisional Patent Application 62 / 635,143, filed February 26, 2018, which is incorporated by reference in its entirety. technical field [0003] The present invention relates generally to mechanical refiners, and more particularly to oil flingers and refiner plates in such refiners, especially for use in pulping medium density fibreboard production and mechanical pulping systems. Background technique [0004] Mechanical refiners convert wood chips, recycled paper, recycled corrugated packaging, and other lignocellulosic materials (collectively "feed material") into pulp. Mechanical refiners apply pressure pulses, shear and other mechanical forces to separate the feed material into separate fibers that form pulp. The feed material may have a higher consistency, such as over 30% dry content. High cellulose feed material can be refined to form medium density fiberboard (MDF) or mechanical pulp such as ...

Claims

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Application Information

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IPC IPC(8): D21D1/00D21D1/30B02C7/12B02C7/00
CPCD21D1/306D21D1/008D21D99/00D21D1/303D21D1/30
Inventor 卢克·金格拉斯托比亚斯·麦凯尔
Owner ANDRITZ AG
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