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Method for pressing plasm in presser and device thereof

A technology for pulp and flocculation, which is applied in the field of compacting pulp and flocculation, can solve the problems of difficulty in producing baling materials with weight deviations, large fluctuations in the bulk density of the pulp of the cyclone, and inability to correct it.

Inactive Publication Date: 2006-11-08
ANDRITZ AG
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, all known methods and devices have the disadvantage that the bulk density of the slurry coming from the cyclone fluctuates greatly, making it difficult to produce bales with only small deviations in weight, because unless Pressing the next bale, usually cannot correct any deviations in a bale

Method used

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  • Method for pressing plasm in presser and device thereof
  • Method for pressing plasm in presser and device thereof
  • Method for pressing plasm in presser and device thereof

Examples

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Embodiment Construction

[0023] Figure 1 to image 3 The shown equipment can be briefly described as comprising the following parts: feed chute 1 through which dry pulp is fed, then degassing or pre-compacting device 2, distribution device 3, two chutes Section 4 , two weighing devices 5 , two prefill chambers 6 with pushers 7 , and a pressing chamber 8 with pressing dies 34 and pressing punches 9 . exist figure 2 The cross-sectional view of FIG. 1 shows a pre-compaction device 2 comprising two endless rotating belts 10 forming a pressing area 11 which in the illustrated embodiment narrows substantially downwards in a wedge shape.

[0024] The air-permeable rotating belt 10 runs around five rollers and over the sliding surface of a perforated plate 12 on a suction box 13 in this embodiment. Since the rotating belt 10 is gas permeable, the gas pressed out during the pre-compaction can be discharged by the suction box 13 through the rotating belt 10 . In the direction of motion of the rotating belt 1...

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Abstract

The invention relates to a method and a device for compacting pulp floc into a preferably prismatic baling material in a press (8, 9, 34), before feeding the floc to the press (8, 9, 34) The floc is weighed by means of a weighing device (5) so that the weight of the floc fed to the presses (8, 9, 34) is already equal to the weight of the final bale material.

Description

technical field [0001] The present invention relates to a method and apparatus for compacting pulp floc in a press. [0002] However, the invention is not limited to the compaction of pulp batts, but may also be used for compacting other fibrous substances or materials having a low bulk density. Background technique [0003] Such methods and apparatus are known in the art. The purpose of these methods and devices is primarily to press the bale material in as few press cycles as possible, wherein the specific final weight of the bale material has relatively small tolerances. Using known methods and equipment, normal procedure is to measure the volume of the low density instant dried pulp from eg a cyclone, which volume allows some deduction about the weight of the pulp contained. If the final weight of the pressed bale material deviates from the predetermined weight, this deviation is taken into account by correcting the volume fed. Also known are other methods and devices...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21J3/00
CPCB30B9/301B65B1/24B65B1/32D21C9/18
Inventor 韦尔特·弗里茨尔赫贝特·弗里德尔托马斯·拉道尔乌特·菲格
Owner ANDRITZ AG
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