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Device for treating fibrous materials

A pulping and pulping technology, which is applied in fiber raw material processing, paper recycling, textiles and papermaking, etc., can solve the problems of large space and area, and achieve the effects of space saving, manufacturing cost reduction and total length reduction

Active Publication Date: 2007-05-02
ANDRITZ AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although fiberization can be done in drum pulping with low energy input followed by gentle fiber treatment in a screening section that rotates with the drum, the disadvantage is the relatively large space and area required to install the drum

Method used

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  • Device for treating fibrous materials
  • Device for treating fibrous materials
  • Device for treating fibrous materials

Examples

Experimental program
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Embodiment Construction

[0017] Figure 1 shows an embodiment of a device 1 according to the invention, which device 1 mainly comprises a combination of two main units, namely a pulping section 3 and a screening section 2, wherein the screening section 2 is arranged in the pulping section 3. Two units are formed by a pulping drum 4 and a screening drum 5 . As is well known in the art, the inner diameter of the pulping drum 4 is for example between 3.5 and 5.5 m.

[0018] Thanks to the arrangement according to the invention, that is, the screening section 2 is located inside the pulping section 3, a space saving of up to 50% can be achieved compared to a conventional arrangement of these two sections, i.e. the overall length required for the plant can be much reduced up to half.

[0019] The pulping drum 4 , which rotates about the axis of rotation 6 of the device 1 , is fed through the opening 7 the recycled paper to be pulped and cleaned. The pulping drum 4 is supported on bearings 8 and driven by a...

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PUM

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Abstract

A device(1)for manufacturing fibrous pulp comprises two main units that is a pulping drum(4)and a sorting drum(5), wherein the sorting drum(5)is arranged inside of the pulping drum (4). The combination removes the non-fibrous pulp from the suspension of fibrous pulp in a space-saving fashion. The pulp is conveyed along axial direction in the device(1)and is steered at the end part of the sorting part(2), and then the pulp enters the part at the position. The obtained acceptable part passes through the sorting part(2)and discharges from the device(1)for further preparation.

Description

technical field [0001] The invention relates to an apparatus for preparing fibrous pulp, the apparatus having an opening for feeding the pulp, a pulping section formed by a pulping drum, and a screening section formed by a screening drum. Background technique [0002] For pulping, especially for separating individual fibers from a mixture of solids in aqueous suspensions, especially pulp suspensions for paper circulation, it is known to employ mechanical processes using pulping drums, either continuous or discrete Batch pulper. For the continuous removal of contaminants (such as impurities, which are not pulp that can be further processed), sieves are used in practice. A two-step process is carried out sequentially: pulping and screening, i.e. first fiberizing the pulp and then dividing the fiberized pulp suspension into a so-called acceptable fraction and a so-called waste fraction, the acceptable fraction being essentially free from coarse contamination The waste part co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21D5/06
CPCD21D5/06D21B1/32Y02W30/64
Inventor 赫尔穆特·加布尔
Owner ANDRITZ AG
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