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Screen device

A technology of maceration and waste products, which is applied in wet separation, solid separation, textiles and papermaking, etc. It can solve the problems of ineffective fiber decomposition and unmacerated pieces, and achieve the effect of effective fiber decomposition

Inactive Publication Date: 2013-03-20
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, the above-mentioned disintegration unit cannot optimally cope with both the case where there are many undigested flakes and the situation where there are few undisintegrated flakes, and there are cases where the undigested flakes cannot be efficiently disintegrated into fibrils.

Method used

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Embodiment Construction

[0029] Hereinafter, the sieve device according to the embodiment of the present invention will be described in detail using the drawings. In addition, the same code|symbol is attached|subjected to the same component as the conventional structure, and it demonstrates.

[0030] figure 1 It is a sectional view showing the outline of the sieve device 20 of the present invention.

[0031] Such as figure 1 As shown, the sieve device 20 has a substantially hollow cylindrical baffle plate 21a constituting an outer frame. Moreover, the upper surface of this shutter 21a is opened, and the cover member 21b is detachably attached so that this opening may be closed. The papermaking raw material A is supplied to the inner side closed by the shutter 21a and the cover member 21b, and the acceptable product B and the waste product C are sorted out in the inner side.

[0032] A flange portion 30 protruding sideways is formed on the lower outer peripheral portion of the cover member 21b. ...

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PUM

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Abstract

Provided is a screen device capable of effectively fiberizing an undefibrated piece in a reject according to the defibration state of the undefibrated piece. Specifically disclosed is a screen device provided with: a screen entrance chamber (6) for sorting paper starting materials into an accepted item (B) that is a good-quality fiber and a reject (C) that is foreign matter; a reject chamber (7) to which the reject (C) obtained by the sorting in the screen entrance chamber (6) is sent; and a defibration unit (25) which comprises a defibration stator (25a) and a defibration rotor (25b) both for further fiberizing an undefibrated starting material in the reject (C), the defibration stator (25a) and the defibration rotor (25b) respectively comprising stepped pockets (41c, 51c) facing each other across a gap (59), and which fiberizes the reject (C) sent from the screen entrance chamber (6) to the reject chamber (7) through the pockets (41c, 51c). The defibration stator (25a) and the defibration rotor (25b) are attachably and detachably mounted by fastening members (44, 55).

Description

technical field [0001] The present invention relates to a sieve for paper-making raw materials for sorting paper-making raw materials into good-quality fibers, which are good products, and waste products, which are foreign materials such as plastics and sand, when used paper is used as a raw material in a pulp factory or the like to manufacture paper, cardboard, fiberboard, etc. device. Background technique [0002] Conventionally, there are known sieve devices for sorting papermaking raw materials into acceptable fibers, which are high-quality fibers, and waste products, which are foreign substances such as plastics and sand (see, for example, Patent Documents 1 to 4). [0003] Figure 5 It is a sectional view which shows an example of the conventional screen apparatus 1 for papermaking raw materials. In this sieve device 1 , the papermaking stock A flows from the papermaking stock inlet 2 into the stock inlet chamber 5 . A screen frame 9 and a rotor 10 are arranged in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21D5/02B03B5/00
CPCD21D1/22D21D5/026
Inventor 国分喜吉国分一哉田中正守
Owner VOITH PATENT GMBH