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Pulp concentration adjusting method and device for used paper recycling apparatus

a technology of used paper recycling and concentration adjustment, which is applied in the direction of pulping with acid salts/anhydrides, papermaking, digesters, etc., can solve the problems of insufficient recycling of confidential documents, large manual labor needed for collecting used papers, and a large amount of used paper collection, etc., to achieve the effect of reducing the amount of used paper

Inactive Publication Date: 2008-07-24
VIEWDLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]It is other object of the invention to present a pulp concentration adjusting technology for a used paper recycling apparatus of furniture size to be installed not only in a large office, but also in a small shop or a room in general household, friendly to the environment and low in running cost, capable of preventing leak of confidential information, private information, and other information, and keeping a high confidentiality.
[0035]By contrast, according to the used paper recycling apparatus of the invention, the information printed on the used paper is not diffused outside of the closed system, and the resources can be utilized effectively.

Problems solved by technology

For recycling of used paper, a tremendous manual labor is needed for collecting used paper, and used paper collection involves various problems, such as mixing of foreign matter by garbage collectors, defective classification due to lack of knowledge about used paper recycling, and entry of harmful objects, and if used paper is collected, in order to recycle by 100 percent, final checking by specialists and cleaning works are needed.
On the other hand, confidential documents are not easily recycled and are mostly incinerated, and the recycling rate is low.
This wet process shredder is a giant machine installed in a wide space, and it can be used only in a large office, and it is not suited to small office or general household.
If shredded chips may be used as material for recycled paper, processing is possible only in large recycling plant, and the recycling cost is high and it is not economical.

Method used

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  • Pulp concentration adjusting method and device for used paper recycling apparatus
  • Pulp concentration adjusting method and device for used paper recycling apparatus
  • Pulp concentration adjusting method and device for used paper recycling apparatus

Examples

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embodiment 1

Preferred Embodiment 1

[0050]A used paper recycling apparatus of the invention is shown in FIG. 1 to FIG. 10, and this used paper recycling apparatus 1 is specifically installed at the site of origin of used paper, and it is an apparatus for manufacturing recycled paper at the site without disposing or discarding the used paper UP, and such used paper UP includes confidential documents occurring in government offices and private companies, and private letters in general household, and other used and unnecessary documents.

[0051]The used paper recycling apparatus 1 has a furniture size as shown in FIG. 10, that is, size and shape similar to office equipment, such as document rack, locker, desk, copier, or personal computer, and is mainly composed of a pulp making section 2, a pulp concentration adjusting section 3, a paper making section 4, and a control section 5 as shown in FIG. 1, and these sections 2 to 5 are contained in an apparatus case 6 in a compact design, and a drive source ...

embodiment 2

Preferred Embodiment 2

[0177]This preferred embodiment is shown in FIG. 11A and FIG. 11B, and is similar to preferred embodiment 1, except that the structure of pulp concentration adjusting section (pulp concentration adjusting device) 3 is slightly modified.

[0178]That is, in the pulp concentration adjusting section 3 of the preferred embodiment, the pulp dividing tank 305 for dividing and storing the used paper pulp UPP stored in the pulp storing tank 26 of the pulp making section 2 is a closed tank having an inner volume corresponding to the specified division portion for adjusting the concentration, and includes an air vent valve 310 and internal pressure detector (internal pressure detecting means) 311. Reference numeral 312 is a check valve.

[0179]The air vent valve 310 is for exhausting the air in the pulp dividing tank (enclosed tank) 305 when filling up with the used paper pulp UPP, and is specifically a float valve being opened and closed by a float 310a.

[0180]The internal p...

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Abstract

The invention presents a pulp concentration adjusting method and its device for realizing a used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality. The pulp concentration adjusting section is characterized by dividing a specified portion from the whole volume of used paper pulp manufactured in pulp making section in preceding process, adding water for adjusting concentration to the divided portion of used paper pulp, and adjusting the total volume of the divided portion of used paper pulp and water to a specified value, thereby preparing a pulp suspension of specified concentration. In this manner, by adjusting the concentration of used paper pulp in dividing portions (small portions), the water consumption can be saved substantially and the apparatus size is reduced, while enhancing the processing capacity.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a pulp concentration adjusting method and device for used paper recycling apparatus, and more particularly to a concentration adjusting technology for adjusting the concentration of used paper pulp manufactured in pulp making process in a preceding process in a used paper recycling apparatus of furniture size installed at the site of origin of used paper, for recycling and processing into reusable paper at the site without discarding the generated used paper.[0003]2. Description of the Related Art[0004]Used paper of various types occurs not only in government offices or private companies, but also in daily life or general household. Used paper is usually discarded, incinerated, or disposed as refuse.[0005]On the other hand, in the global concern about effective use of limited resources on earth, various technologies have been developed to regenerate and reuse the used paper being disposed and di...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D21H23/20D21H23/04
CPCD21F9/00D21B1/32Y02W30/64D21C5/02D21C5/00
Inventor TAMAI, SHIGERUKOYAMA, YUJI
Owner VIEWDLE INC
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