JP2008133564A - Swing filtration apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new swing filtration apparatus to be used in a minimum-scale and compact waste-paper recycling unit for shredded document waste paper limited in installation place, contributing to no cause of sedimentation of foreign matter other than waste paper at the bottom and of cloggings in the succeeding steps. <P>SOLUTION: The new swing filtration apparatus is such as to be used in a waste-paper recycling unit for shredded document waste paper comprising a pulper functioning to disaggregate waste paper to make reclaimed pulp suspension and a papermaking machine for making recycled paper from the suspension. This apparatus comprises a reservoir vessel, a feed pipe installed in the reservoir vessel and intended for feeding the above suspension into the reservoir vessel, a filtration mechanism for passing the suspension therethrough and putting it to filtration, a swing mechanism set on the filtration mechanism and intended for swing it, and a pipe installed in the reservoir vessel and intended for discharging the reclaimed pulp suspension after put to filtration. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an office-installed type used paper recycling apparatus for shredded paper, including a pulper that breaks used paper such as office documents into a recycled pulp suspension and a paper machine that produces recycled paper from the recycled pulp suspension. The present invention relates to a novel oscillating filter device used in the above.

  In view of the fact that document shredder has not been sufficiently recycled in the past, if the document shredder is recycled to relatively low quality recycled paper such as toilet paper, the waste paper recycling process can be omitted and an apparatus By reducing the size and simplification of documents, it is possible to recycle document shredded waste in units of organizations such as companies, government offices, associations, housing estates, or local governments, saving resources and energy, and collecting used paper In order to reduce the time and labor required for the paper, a process of separating the waste paper shredded by a document shredding machine with a pulper equipped with a stirring means to obtain regenerated pulp, and the disintegrated regenerated pulp is always gently stirred. And storing the regenerated pulp stored in an injection device having a pressure source and an injection hole, injecting the regenerated pulp from the injection device, through a pair of rollers A document comprising a step of spraying the fiber sheet of a papermaking apparatus having an endless fiber sheet movably attached to the fiber sheet to form a regenerated pulp into a sheet, and drying the regenerated pulp in the form of a sheet with a drying roller to make a paper. A method for recycling shredded waste paper has been proposed (see Patent Document 1).

  Further, the present inventors have proposed a waste paper recycling apparatus for shredded documents as shown in FIG. 7 in order to solve various problems in putting the above proposal into practical use (see Patent Document 2). 7, the used paper recycling apparatus 1 for document shredded waste has a hopper 4 for charging the document shredded waste P, and a first pulper 6 provided with stirring means 6a and 8a at the inner bottom of the tank. The pulper 2 including the second pulper 8 and shredded by a document shredding machine to obtain recycled pulp suspensions P1 and P2, and a paper machine 3 for making recycled paper from the recycled pulp suspension. A waste paper recycling apparatus for shredded paper, comprising: a dryer part 40 of the paper machine 3 having an internal hollow casing 41 and at least a part of the casing 41 alternately vertically and horizontally A plurality of rotatable rolls 46a, 46b, 46c, 46d, 46e, 46f, 46g, 46h, 46i, 46j, 46k, 46l, and 46m, and an endless belt-like structure wound between the rolls 46a to 46m. Dry with canvas 44 Chamber 42, and communicates with the drying chamber 42, and a dehumidifying consisting dryer dryer 50. heat pump system for dehumidification drying while circulating the atmosphere in the drying chamber 42. Reference numeral W is water, and reference numerals 7 and 9 are pumps.

  Since the waste paper recycling apparatus for document shredded waste described in FIG. 7 and Patent Document 2 described above has a compact design that can be installed in a company office, it is relatively small and does not generate high heat and does not have inferior drying ability. A simple papermaking dryer part can be realized, the amount of water used in the system can be minimized, and at the same time, waste paper recycling process can be omitted and equipment can be recycled by reducing the size and simplification of equipment. Document shredded waste that has been incinerated or landfilled can be recycled so that it can be carried out by each organizational unit such as a government office, union, housing complex, or local public entity, saving resources and energy, and shortening the time required for collecting used paper And has the effect of reducing labor.

  However, in the waste paper recycling apparatus for document shredding waste described in FIG. 7 and Patent Document 2 described above, when foreign matter other than paper is contained in the document shredding waste supplied from the hopper 4, it is not disaggregated. There is a problem that it accumulates at the bottom or causes clogging in a later process.

In particular, documents that are no longer needed in the office of a company include those with staples and clips attached, and those with plastic bags attached. The foreign material other than paper was mixed in the shredded document, which caused clogging in a later process.
JP 10-317290 A JP 2006-169710 A

  The present invention has been made in view of the above problems, and is an oscillating filtration device used in an extremely small and compact waste paper recycling apparatus for shredded documents with a limited installation location. It is an object of the present invention to provide a novel oscillating filtration device that does not accumulate in the bottom without being disaggregated and does not cause clogging in a later process.

The swing filtration device of the present invention is used in a used paper recycling apparatus for shredded documents including a pulper that breaks up used paper to make a recycled pulp suspension and a paper machine that makes recycled paper from the recycled pulp suspension. An oscillating filtration device,
A storage container;
A regenerated pulp suspension supply pipe for supplying the regenerated pulp suspension to the storage container provided in the storage container;
Filtering means for filtering the regenerated pulp suspension through;
A swinging means attached to the filtering means for swinging the filtering means;
A regenerated pulp suspension discharge pipe provided in the storage container for discharging the regenerated pulp suspension after filtration;
It is characterized by including.

  If comprised in this way, the regenerated pulp suspension supplied from the pulper can be efficiently filtered by rocking the filtering means.

  The swinging means includes a crank attached to the upper part of the filtering means, a gear motor engaged with the crank, and a guide rail that engages with the gear motor and is provided above the filtering means. Are preferably included. Of course, other configurations can be adopted as the swinging means as long as the filtering means is swung.

  As the filtering means, a screen mesh is suitable. However, any material can be used as long as it can filter the regenerated pulp suspension, and various filtering means can be applied in addition to the netting. In addition to netting, for example, non-woven fabrics and porous materials can be used.

  Furthermore, it is preferable that the storage container further includes a water supply pipe for supplying water to the storage container. If comprised in this way, since the said regenerated pulp suspension of this storage container can be diluted with water suitably, it becomes possible to adjust the density | concentration of this regenerated pulp suspension.

  The waste paper recycling device for shredded documents using the swing filtration device of the present invention is an extremely small and compact waste paper recycling device for shredded documents with limited installation locations, and can be installed in general offices. This is an office-installed waste paper recycling device for shredded documents.

  According to the present invention, it is an oscillating filtration device used in an extremely small and compact waste paper recycling device for shredded documents with a limited installation location, and foreign matter other than waste paper accumulates at the bottom without being disaggregated, There is a remarkable effect that it is possible to provide a novel oscillating filter that does not cause clogging in a later process.

  Therefore, if the waste paper recycling apparatus for shredded documents incorporating the swing filtration device of the present invention is used, the shredded waste paper can be regenerated in each organizational unit such as a company, government office, union, housing complex or local public entity. This makes it possible to recycle the shredded documents that have been incinerated or landfilled, and has the great effect of saving resources and energy, reducing the time required for collecting used paper, and reducing labor.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. However, the illustrated examples are shown by way of example, and it goes without saying that various modifications can be made without departing from the technical idea of the present invention. .

  FIG. 1 is a schematic perspective view showing one embodiment of the swing filtration device of the present invention, and FIG. 2 is a schematic perspective view showing one embodiment of a mesh cage preferably used in the swing filtration device of the present invention. 3 is a schematic top view of the oscillating filter device of FIG. 1, FIG. 4 is a schematic front view of the oscillating filter device of FIG. 1, FIG. 5 is a schematic side view of the oscillating filter device of FIG. It is a conceptual explanatory drawing of the used paper recycling apparatus for document shredded waste incorporating the rocking filter apparatus of invention.

  1 to 6, reference numeral 100 denotes an oscillating filter apparatus according to the present invention. The swing filtration device 100 of the present invention includes a storage container 102, a regenerated pulp suspension supply pipe 104 provided in the storage container 102 for supplying a regenerated pulp suspension PL to the storage container 102, and the regeneration Filtration means 106 (mesh in the illustrated example) for filtering the pulp suspension PL through, swinging means 108 attached to the filtration means 106 for swinging the filtration means 106, and storage A regenerated pulp suspension discharge pipe 110 is provided in the container 102 to discharge the filtered regenerated pulp suspension. Furthermore, a water supply pipe 112 for supplying water to the storage container 102 is provided in the storage container 102. Reference numeral 109 denotes a handle for gripping the storage container 102, and reference numeral 111 denotes a water level gauge for measuring the amount of water of the recycled pulp suspension PL in the storage container 102.

  As shown in FIG. 2, an example in which a net is used as the filtering means 106 is shown. However, any filter other than the net can be used as long as it has a filtering action. Reference numeral 120 denotes a frame member of the filtering means 106 (in the illustrated example, a net cage). As shown in FIGS. 1 and 3 to 5, as the swinging means 108, the crank 114 attached to the upper part of the filtering means 106 (the screen mesh in the illustrated example) and the crank 114 are engaged. A gear motor 116 and a guide rail 118 that engages with the gear motor 116 and is provided above the filtering means 106 are included.

  In this way, when the gear motor 116 is driven in the guide rail 118, the filtering means 106 (reed screen in the illustrated example) moves up and down via the crank 114 and is swung. In addition, by supplying water from the water supply pipe 112, the concentration of the regenerated pulp suspension PL in the storage container 102 can be appropriately adjusted.

  The swinging means 108 may be any structure that swings the filtering means 106, and it goes without saying that configurations other than the illustrated example can be adopted as the swinging means 108.

  Next, FIG. 6 shows an example in which the oscillating filtration device 100 configured as described above is incorporated in a used paper recycling apparatus for document shredder as shown in Patent Document 2.

  In FIG. 6, the waste paper recycling apparatus 126 for document shredded waste has a hopper 4 for feeding the document shredded waste P, and a first pulper 6 provided with a tank and stirring means 6a and 8a at the inner bottom of the tank. The pulper 2 including the second pulper 8 and shredded by a document shredding machine to obtain recycled pulp suspensions P1 and P2, and a paper machine 3 for making recycled paper from the recycled pulp suspension. A waste paper recycling apparatus for shredded paper, comprising: a dryer part 40 of the paper machine 3 having an internal hollow casing 41 and at least a part of the casing 41 alternately vertically and horizontally A plurality of rotatable rolls 46a, 46b, 46c, 46d, 46e, 46f, 46g, 46h, 46i, 46j, 46k, 46l, and 46m, and an endless belt-like structure wound between the rolls 46a to 46m. With canvas 44 Drying chamber 42, and communicates with the drying chamber 42, and a dehumidifying consisting dryer dryer 50. heat pump system for dehumidification drying while circulating the atmosphere in the drying chamber 42. The symbol W is water. In addition, the same code | symbol was used about the member similar to the prior art shown in FIG.

  The used paper recycling apparatus 126 for shredded document is provided with the oscillating filtration apparatus 100 according to the present invention described above between the first pulper 6 and the second pulper 8. Reference numerals 122 and 124 denote pumps.

  In FIG. 6, the regenerated pulp suspension supply pipe 104 is connected to the first pulper 6, and the regenerated pulp suspension discharge pipe 110 is connected to the second pulper 8. Therefore, the regenerated pulp suspension PL supplied from the first pulper 6 passes through the oscillating filtering means 106 (the screen mesh in the illustrated example) and is stored in the storage container 102, and then the regenerated pulp suspension. It is sent to the second pulper 8 through the turbid discharge pipe 110 (FIGS. 1 to 6). Further, by appropriately supplying the water W from the water supply pipe 112, the concentration adjustment of the recycled pulp suspension PL in the storage container 102 is appropriately performed.

  As described above, when the swing filtration device 100 of the present invention is used in a waste paper recycling apparatus for document shredded waste as shown in FIG. 6 (see Patent Document 2), the recycled pulp suspension is filtered. Even if foreign matter other than waste paper is mixed, it will not cause clogging in a later process.

FIG. 1 is a schematic perspective view showing one embodiment of a rocking filtration device of the present invention. It is a schematic perspective view which shows one embodiment of the mesh screen used suitably for the rocking filter apparatus of this invention. It is a schematic top view of the rocking filter apparatus of FIG. It is a schematic front view of the rocking filter apparatus of FIG. It is a schematic side view of the rocking filter apparatus of FIG. It is a conceptual explanatory drawing of the used paper recycling apparatus for document shredded waste incorporating the rocking filter apparatus of this invention. It is the schematic of the conventional used paper recycling apparatus for document shredding waste.

Explanation of symbols

  1: Waste paper recycling apparatus for shredded document, 2: Pulper, 3: Paper machine, 4: Hopper, 6: First Pulper, 8: Second Pulper, 7, 9: Pump, 6a, 8a: Stirring means, 40 : Dryer part, 41: Housing, 42: Drying chamber, 44: Canvas, 46a, 46b, 46c, 46d, 46e, 46f, 46g, 46h, 46i, 46j, 46k, 46l, 46m: Roll, 50: Dryer , P: Document shredded waste, P1, P2: Regenerated pulp suspension, W: Water, 100: Oscillating filtration device, 102: Storage container, 104: Recycled pulp suspension supply pipe, 106: Filtration means, 108 : Swing means, 109: handle, 110: recycled pulp suspension discharge pipe, 111: water level gauge, 112: water supply pipe, 114: crank, 116: gear motor, 118: guide rail 120: frame member, 126: document shredding scrap for used paper recycling apparatus, 122, 124: Pump, PL: recycled pulp suspension.

Claims (4)

A swing filter used in a waste paper recycling apparatus for shredded shredded paper, including a pulper that disaggregates waste paper to make a recycled pulp suspension and a paper machine that makes recycled paper from the recycled pulp suspension,
A storage container;
A regenerated pulp suspension supply pipe for supplying the regenerated pulp suspension to the storage container provided in the storage container;
Filtering means for filtering the regenerated pulp suspension through;
A swinging means attached to the filtering means for swinging the filtering means;
A regenerated pulp suspension discharge pipe provided in the storage container for discharging the regenerated pulp suspension after filtration;
A rocking filtration device comprising: The rocking means is
A crank attached to the top of the filtering means;
A gear motor engaged with the crank;
A guide rail that engages with the gear motor and is provided above the filtering means;
The rocking filtration device according to claim 1, comprising:   The rocking filtration device according to claim 1 or 2, wherein the filtration means is a net cage.   The storage container further includes a water supply pipe for supplying water to the storage container, and the concentration of the recycled pulp suspension is adjusted. 2. The rocking filtration device according to item 1.

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