JP5406329B2 - Pulp supply equipment and dewatering equipment for used paper recycling equipment - Google Patents

Description

The present invention relates to a pulp supply apparatus for used paper recycling apparatus, and more particularly, to a used paper recycling technique for recycling recycled paper at a place where the used paper is generated, without discarding the generated used paper. .

In addition to daily work at various offices such as government offices and general enterprises, various types of used paper, so-called waste paper, are generated in daily life of ordinary households. These waste papers are discarded as trash or incinerated for disposal.

On the other hand, various technologies for reclaiming waste paper that has been disposed of recently without being disposed of have been developed in the global increase in the momentum of effective utilization of limited earth resources.

Most of these recycled paper recycling technologies are adopted and implemented in the paper industry. Like the normal papermaking equipment, the used paper recycling equipment has a vast site, enormous volume for the purpose of high-speed mass production and high quality of recycled paper. Investment, and a large amount of water and chemicals used for papermaking.

In addition, waste paper recycling requires a lot of manual waste paper collection work, and this waste paper collection involves the mixing of foreign substances by many people, poor sorting due to insufficient knowledge of recycled paper, and insufficient removal of repellents. However, even if waste paper is collected, in order to recycle these waste paper as 100% recycled paper, work such as re-sorting and washing by a specialist is required. Furthermore, waste paper such as top-secret documents is not easily collected for waste paper collection due to confidentiality issues and is incinerated, so recycling is not progressing.

In order to solve these waste paper collection problems, it is effective to develop a technology that can be recycled and used by the waste paper generation source. From this viewpoint, an apparatus as described in Patent Document 1 is proposed for development. Has been.

This device is a wet shredder that cuts waste paper little by little while adding a small amount of water, and the cutting waste cut by this shredder is sent to an external waste paper recycling factory, etc. Reused as raw material.

Since the cutting waste produced by the wet shredder is pulped and does not retain the form of a piece of paper, high confidentiality can be maintained, and an effect of promoting recycling of used paper such as top secret documents can be expected.

However, since this wet shredder is a fairly large device and requires a large installation space, it can be used only in large establishments where a large amount of waste paper is generated and does not have a large installation space. It was unsuitable or unusable for small-scale stores, private offices, or ordinary households where small amounts of waste paper were used. In addition, even though the cut scraps that have been cut can be reused as raw materials for recycled paper, they can only be processed at large-scale factories such as used paper recycling factories. It was an economy.

JP-A-6-134331

The present invention has been made in view of such conventional problems, and the object of the present invention is that it can be installed not only in large establishments, but also in small stores and ordinary homes, and in the environment. Providing pulp supply equipment for used paper recycling equipment that is gentle and can keep running costs low, and that can reliably prevent leakage and outflow of various types of information such as confidential information and personal information, while maintaining high confidentiality. There is to do.

In order to achieve this object, the pulp supply apparatus of the present invention is a paper-sized paper recycling apparatus that can be placed at a place where used paper is generated. And a partition member arranged to be slidable on the lower surface of the mesh endless belt on which the papermaking net conveyor unit travels, and to the upper surface of the mesh endless belt. And a mold body that defines the supply width of a slurry-like pulp suspension in which waste paper pulp coexists with water sent from the pulp production section, and the partition member A flat plate member for supporting the mesh of the mesh endless belt in a closed state is provided at the base of the pulp suspension flow-down supply portion while slidingly supporting the bottom surface of the mesh endless belt. The mold body comprises a planar U-shaped main body frame in which the traveling end of the mesh endless belt is opened, and an overflow tank provided at the rear end of the main body frame. The pulp suspension supplied into the frame body is once stored in the overflow tank and then overflows and flows down onto the flat plate member of the partition member, and the pulp supplied into the mold body Suspension is uniformly diffused and supplied to the upper surface of the netless endless belt which is disposed so as to be inclined upward in the running direction by the staying action by the cooperation of the mold body and the partition member. It is comprised as follows.

The following configuration is adopted as a preferred embodiment.
( 1 ) The reticulated endless belt in which the main body frame has an in-frame width dimension set to a width dimension of recycled paper to be manufactured to define the supply width of the pulp suspension, and the lower end surface of which is inclined. It is arranged so as to be in sliding contact with the upper surface.

( 2 ) The overflow tank is integrally fixed to the rear end portion of the main body frame, and the upper end edge of the front wall is formed in a horizontal straight line. The upper end edge of the front wall of the overflow tank is a pulp. The suspension functions as an overflow portion.

According to the present invention, excellent specific effects listed below can be obtained, which can be installed not only in large offices, but also in small-scale stores and general households, and is also environmentally friendly and has a running cost. In addition, it is possible to provide a used paper recycling apparatus that can reliably prevent leakage and outflow of various information such as confidential information and personal information and maintain high confidentiality.

(1) A pulp manufacturing unit that produces used paper pulp by breaking and beating used paper in a fixture-sized device case, and a paper making unit that produces recycled paper by making used paper pulp produced by the pulp manufacturing unit. Because it is equipped with a control unit that drives and controls the pulp production unit and the papermaking unit, it can be recycled on its own at the wastepaper source without disposing of the wastepaper, thus reducing wastepaper disposal. In addition to helping to solve the garbage problem, limited resources can be used effectively.

  In particular, this type of waste paper has not been recycled due to security problems, and can be recycled and reused at the waste paper source as described above, so that the effect of effective resource utilization is remarkable.

(2) In addition, by installing a compact used paper recycling facility that has the same functions as the large-scale equipment of a paper mill or a recycled paper recycling plant at the waste paper generation site, Thus, the paper can be recycled, and it is economical because various expenses such as transportation costs and incineration costs required for collecting and discarding the used paper are unnecessary.

(3) The pulp manufacturing section is composed of a disaggregation section that crushes and disaggregates used paper and a beating section that beats the used paper disaggregated in the disaggregation section, and the disaggregation section and the beating section circulate the used paper pulp. Therefore, the beating of the used paper pulp is efficiently performed according to the purpose, and the optimum beating effect is obtained. As a result, good paper quality can be ensured for the recycled paper.

(4) The waste paper is broken down to the fiber level (pulp) by the pulp manufacturing department that breaks and beats the waste paper to produce the waste paper pulp, and the letters and diagrams described there are completely decomposed and extinguished. It is impossible to restore. As a result, it is possible to reliably prevent leakage / outflow of confidential information and personal information composed of these characters and diagrams, and maintain high confidentiality.

(5) In addition, the device structure is compact and can be installed not only in large offices, but also in small stores and general homes. From this point of view, leakage and outflow of various information such as confidential information and personal information Can be reliably prevented.

(6) The water used in the pulp production section is a water circulation system in which the water dehydrated and recovered in the paper making section is used for return, and / or the drive source for the pulp manufacturing section and the paper making section. Is an electric drive source driven by a general household AC power source, it is environmentally friendly and running costs can be kept low, which is also economical.

(7) The used paper is disposed at a place where the used paper is generated, and the generated pulp is disaggregated by the pulp manufacturing unit to be used paper pulp, and the used paper pulp is made into recycled paper by the paper making unit. As a result, the used paper is configured to be recycled as recycled paper within the place where it is generated, so that various information such as characters and diagrams written on the used paper is diffused outside the place where the used paper is generated. In this respect as well, confidential information and personal information can be surely prevented from being leaked or leaked, high confidentiality can be maintained, and effective use of resources can be achieved.

  That is, by using the used paper recycling apparatus of the present invention, the above-mentioned various information is diffused out of certain systems (for example, schools, hospitals, city halls, law offices, patent offices, general households, etc.) related to the use. There is no danger of doing this.

In other words, for example, in the case of a conventionally known shredder, even if the waste paper is cut into small pieces and the characters and diagrams described there become unreadable, the cut paper pieces are discarded at an incinerator or the like. Therefore, the diffusion outside the system cannot be completely prevented. In this regard, it is conceivable to store in a warehouse in the system for the purpose of preventing the diffusion outside the system, but on the other hand, it is necessary to secure such a storage place, and the target paper is also used once. The use of only is inefficient from the viewpoint of effective use of resources.

On the other hand, according to the used paper recycling apparatus of the present invention, various information written on used paper is never diffused outside the system related to its use, and resources can be used effectively.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Throughout the drawings, the same reference numeral indicates the same component or element.

Embodiment 1
A used paper recycling apparatus according to the present invention is shown in FIGS. 1 to 9, and this used paper recycling apparatus 1 is specifically disposed at a place where used paper is generated, and without discarding the generated used paper UP. , A device that recycles paper into reusable paper on the spot, and used paper UP includes used documents that have been used or no longer needed, such as confidential documents of public offices / general companies, private documents of general households, etc. To do.

As shown in FIG. 1, the used paper recycling apparatus 1 includes a pulp manufacturing unit 2, a papermaking unit 3, and a control unit 4 as main parts, and these device constituent units 2 to 4 are housed in a device case 5. In addition to the compact design, the driving source of the pulp manufacturing unit 2 and the paper making unit 3 is an electric driving source driven by a general household AC power source. Hereinafter, each component will be specifically described.

I. Device case 5:
The device case 5 has the same size as the fixture size, that is, the fixtures such as book shelves, lockers, office desks, copiers, and personal computers arranged and used in the office. It is designed appropriately according to the purpose and application. The apparatus case 5 of the illustrated embodiment is a substantially rectangular parallelepiped box having a shape and size comparable to a copying machine.

II. Pulp production department 2:
The pulp manufacturing unit 2 is a process part that disaggregates and beats the waste paper UP to produce waste paper pulp, and beats the waste paper UP disaggregated by the disaggregation unit 6 that crushes and disaggregates the waste paper UP. It consists of a beating unit 7, and the disaggregation unit 6 and the beating unit 7 are of a circulation type for circulating used paper pulp UP.

The disaggregation unit 6 includes a stirring device (stirring means) 8 that stirs the waste paper UP, and a water supply device (water supply means) 9 that supplies water to the stirring device 8.

The stirring device 8 includes a stirring tank 10, a stirring impeller 11, and a drive motor 12.

The stirring tank 10 is provided with an inlet 10a having a structure that can be opened and closed with respect to the outside of the device case 5 on the ceiling wall, and the stirring impeller 11 can be rotated inside (bottom in the case). Is provided.

The internal volume of the stirring tank 10 is set according to the number of used paper UPs to be stirred at a time. In the illustrated embodiment, about 3 liters of water is added, and a stirring tank 10 having a volume capable of stirring (batch processing) about 8 sheets (about 32 g) of A4-sized PPC (plain paper copier) waste paper UP at a time. It is said that.

The agitation impeller 11 has a direct motor structure that is directly attached and fixed in a horizontal state to the rotating shaft 12 a of the drive motor 12, and is configured to be driven forward and reverse by the drive motor 12. The drive motor 12 is specifically an electric motor and is electrically connected to the control unit 4.

The stirring impeller 11 is rotated in the forward and reverse directions when the used paper UP is stirred in the A4 size, in order to prevent the entanglement of the stirring impeller 11 in order to prevent entanglement of the water jet due to the reverse rotation after the forward rotation. This is to disperse by action.

In this connection, the blade shape of the stirring impeller 11 is designed so that the stirring force (diffusion effect) is different between forward rotation and reverse rotation, so that the waste paper UP, UP,. Dissolution and beating are realized.

It should be noted that the operation conditions such as the forward and reverse rotation timings of the stirring impeller 11 and the stirring time can be obtained based on experimental data performed in advance so that the desired used paper UP, UP,... Set to

The water supply device 9 includes a white water recovery tank 15 and a water supply pump 16. As will be described later, the white water recovery tank 15 recovers white water W (ultra-low concentration pulp water filtered by a papermaking net when paper making) that is filtered and dehydrated in the paper making unit 3. The white water W collected in 15 is supplied to the agitation tank 10 of the agitation device 8 as agitation water by the water supply pump 16.

Further, as will be described later, the water supply device 9 also has a function as a concentration adjustment water supply device (concentration adjustment water supply means) of the pulp concentration adjustment unit 28. For this purpose, white water in the white water recovery tank 15 is used. A concentration adjusting water supply pump 17 for supplying W as concentration adjusting water to the concentration adjusting tank 29 is provided. Reference numerals 18 and 19 denote a lower limit water level float switch and an upper limit water level float switch provided in the white water recovery tank 15, respectively.

In the stirrer 8, the used paper UP, UP,... Put into the stirrer tank 10 from the charging opening of the apparatus case 5, that is, the charging port 10 a, In the water W supplied from the apparatus 9, it is stirred for a predetermined time (in the case of illustration, 5 minutes to 30 minutes), thereby being disaggregated and beaten to become used paper pulp UPP.

The beating unit 7 includes a beating vessel 20 that communicates with the stirring vessel 10 of the disaggregation unit 6, a beater roller 21 that is rotatably provided in the beating vessel 20, and a drive motor 22 that rotationally drives the beater roller 21. It becomes.

As shown in FIGS. 1 and 2, the beating tank 20 is formed integrally with the lower part of the stirring tank 10, and a beater roller 21 is rotatably supported around the horizontal axis therein.

As shown in FIGS. 2 and 3, the beater roller 21 is provided with a plurality of (principal) prismatic beating blades 24 provided radially at equal intervals over the entire circumference in the circumferential direction of the cylindrical roller body 23. It will be. Preferably, in order to increase the cutting force of the beater roller 21, the beating blades 24, 24,... Are provided with a predetermined lead angle α (about 2 ° to 4 ° in the illustrated embodiment).

  Specifically, as shown in FIG. 3A, the drive motor 22 is mounted and fixed in a horizontal state outside the side wall of the beating tank 20, and the rotation shaft 22 a is in a horizontal state inside the beating tank 20. The direct motor structure is such that the beater roller 21 is directly attached and fixed to the rotating shaft 22a. Specifically, the drive motor 22 is an electric motor and is electrically connected to the control unit 4.

The beating tank 20 has a cylindrical inner peripheral wall surface 20a coaxial with the beater roller 21 along the rotation contour of the beating blades 24, 24,... Of the beater roller 21, and a boundary portion 20b with the stirring tank 10 is provided. It is a rectangular communication opening, and this communication opening 20b can be opened and closed.

Although the specific structure of the opening / closing means is not shown, for example, a conventionally known manual or automatic opening / closing lid is provided, and the lid member of the opening / closing lid is not only a completely sealed plate material but also used paper pulp having a predetermined particle size or less. It may be a net-like mesh that allows only UPP to pass through. The opening / closing means closes the communication opening 20b when the beating unit 7 is stopped, and prevents the waste paper UP and the waste paper pulp UPP from flowing into the beating tank 20 from the stirring tank 10 of the stirring device 8, while the beating unit In the operation of No. 7, the communication opening 20b is opened to allow circulation of the used paper pulp UPP between the stirring tank 10 and the beating tank 20.

On the inner peripheral wall surface 20a of the beating tank 20, a plurality of (pieces) receiving blades 25, 25,... Cooperating with the beating blades 24, 24,. Is provided. In the illustrated embodiment, as shown in FIGS. 2 and 3A, two prismatic receiving blades 25, 25 are provided. The clearance dimension between the cutting edges of the receiving blades 25 and 25 and the cutting edges of the beating blades 24, 24,. It is set to about several mm, and this gap dimension can be finely adjusted according to the purpose. As described above, since the gap size can be finely adjusted, the collaborative action of the beating blades 24, 24,... And sliding force is obtained.

Specifically, the receiving blades 25, 25 are provided so as to be able to advance and retract in the radial direction of the beater roller 21 by adjusting bolts 26, respectively, and the receiving blades 25 are adjusted to advance and retract by rotating the adjusting bolt 26. Thereby, the clearance dimension between the said beating blades 24, 24, ... and the receiving blade 25 is adjusted.

Further, since a plurality of (two in the illustrated case) receiving blades 25 and 25 can be adjusted to advance and retract independently from each other in the radial direction of the beater roller 21, the receiving blades 25 and 25 are individually adjusted to advance and retract. By adjusting the gap size between the beating blades 24, 24,... And the receiving blades 25, 25, the beating speed of the beating unit 7 can be adjusted as appropriate. Moreover, since the said clearance dimension can be adjusted individually by adjusting the receiving blades 25 and 25, the expansion / contraction adjustment of the beating time according to the number of arrangement | positioning is also possible by increase / decrease in the receiving blades 25, 25, ... Become.

In the beating unit 7, the used paper pulp UP supplied from the stirring tank 10 to the beating tank 20 by the rotation operation of the beater roller 21 in the direction of the arrow by the drive motor 22 passes through the inside of the beating tank 20 in the rotation direction of the beater roller 21. When passing through the gap between the receiving blades 25, 25 fixed to the rotating beater blades 24, 24,... Of the rotating beater roller 21, the blades 24, 25 are subjected to beating action and again stirred. Reflux to tank 20.

In this case, when the disaggregation unit 6 is driven simultaneously with the beating unit 7, the waste paper pulp UPP in the agitation tank 10 that is agitated by the agitation impeller 11 rises in the water level at the outer peripheral portion thereof, and the waste paper pulp UPP becomes the beater roller. 21 is buried, and further, the entire communication opening 20b of the beating tank 20 is buried. Thereby, the beating tank 20 constitutes a pulp circulating tank in which the used paper pulp UPP circulates together with the stirring tank 10 of the disaggregating section 6, and the used paper pulp UPP circulating in the pulp circulating tank 10, 20 is agitated by the disintegrating section 6. The disaggregation and the beating by the beating unit 7 are sequentially repeated. In other words, the waste paper pulp UPP beaten by the beater roller 21 in the beating unit 20 of the beating unit 7 is discharged to the stirring layer 10 of the disaggregating unit 6 and is uniformly stirred by the stirring impeller 11 in the stirring unit 10, and again By being supplied to the beating unit 7 and repeating this process an appropriate number of times, disaggregation and beating are uniformly performed on the entire used paper pulp UPP in the tank. As a result, the optimum paper strength for the recycled paper RP that is recycled by the papermaking unit 3 to be described later is ensured.

Further, as shown in FIGS. 1 and 2, the stirring impeller 11 of the disaggregation unit 6 is rotatably supported around the vertical axis at the bottom of the stirring tank 10, and the installation height of the stirring impeller 11 is set. Since the pulp inflow opening of the beating tank 20, that is, the lower part of the communication opening 20 b is provided at a corresponding height position, the waste paper pulp UP flows into the beating tank 20 from the stirring tank 10 by the rotating action of the stirring impeller 11. In addition, the waste paper pulp UP smoothly circulates through the pulp circulation tanks 10 and 20 in cooperation with the rotating action of the beater roller 21.

The pulp concentration adjusting unit 28 is provided on the downstream side of the agitation tank 10 and adjusts the concentration of the used paper pulp UPP produced in the agitation tank 10 to an appropriate concentration suitable for subsequent papermaking. The pulp concentration adjusting unit 28 includes a concentration adjusting tank 29 for storing used paper pulp UPP produced in the stirring tank 10, a concentration adjusting water supply device (concentration adjusting water supplying means) for supplying water to the concentration adjusting tank 29, and As described above, the water supply device 9 is also used as the concentration adjusting water supply device.

The internal volume of the concentration adjusting tank 29 is set according to the number (amount) of used paper UP that is batch-processed by the stirring device 8. In the illustrated embodiment, as described above, about 8 sheets (about 32 g) of A4-sized waste paper UP are batch-processed, so that the concentration of the waste paper pulp UPP corresponding to this amount has a volume that can be adjusted. The adjustment tank 29 is used.

In this connection, a drain port 10b is provided at the bottom of the stirring tank 10 of the stirring device 8, and the drain port 10b is opened and closed by a drain valve (not shown). Specifically, the drain valve is an electromagnetic on-off valve and is electrically connected to the control unit 4.

The concrete concentration adjusting method of the pulp concentration adjusting unit 28 is as follows. From the concentration adjusting water supply device 9 to the total amount of used paper pulp UPP produced by batch processing in the stirring tank 10 in the concentration adjusting tank 29. The water W is hydrated and the total volume of the waste paper pulp UPP and the water W becomes a predetermined value, so that the pulp suspension PS has a predetermined concentration. The target concentration of the pulp suspension PS to be adjusted is set in consideration of the paper making ability in the paper making unit 3 to be described later, based on experimental data performed in advance. In the illustrated case, the concentration is about 0.1%. Is set to 30 is a float switch provided in the concentration adjusting tank 29, and the water level when the amount of the pulp suspension PS in the concentration adjusting tank 29 (the total volume of the used paper pulp UPP and the water W) reaches the predetermined value. Is detected.

  Thus, in the concentration adjusting tank 29, the entire amount of waste paper pulp UPP produced in the stirring tank 10 (and the beating tank 20) is dropped and supplied from the drain port 10b of the stirring tank 10 into the concentration adjusting tank 29 by its own weight. At the same time, the white water W is added to the waste paper pulp UPP from the concentration adjusting water supply device 9 until it reaches the predetermined value (detected by the float switch 30), thereby adjusting the concentration of the waste paper pulp UPP. The pulp suspension PS has a predetermined concentration. In the illustrated embodiment, the water W for dilution is added from the concentration adjusting water supply device 9 to the total amount of the waste paper pulp UPP (about 32 g of waste paper UP + 3 liters of water W), and the waste paper pulp UPP The total volume (total amount) of water W is controlled to be 30 liters, whereby a pulp suspension PS having a concentration of about 0.1% (target concentration) is prepared. The concentration-adjusted pulp suspension PS is sent by the first suspension supply pump 31 to the pulp supply tank 85 of the paper making unit 3 in the next step.

While the waste paper pulp UPP is dropped and supplied into the concentration adjustment tank 29 from the drain port 10b of the stirring tank 10, water W is supplied from the water supply device 9 by the water supply pump 16 in the stirring tank 10, and The agitation impeller 11 is rotated by the drive motor 12, and the agitation tank 10 is cleaned.

As described above, the water supply source of the water supply device 9 is the white water W dehydrated in the paper making unit 3 collected in the white water collecting tank 15, in other words, all the white water W dehydrated and collected in the paper making unit 3 is The water circulation system is used in a feedback manner by the stirring device 8 and the pulp concentration adjusting unit 28 of the disaggregation unit 6.

III. Papermaking part 3:
The paper making unit 3 is a process part for producing recycled paper RP by paper making the used paper pulp UPP produced by the disaggregation unit 6, and includes a paper making net conveyor unit 40, a dewatering roll unit 41, and a drying belt conveyor unit 42. .

The papermaking net conveyor unit 40 is a part for making a wet paper by making a slurry-like pulp suspension PS in which water W and waste paper pulp UPP coexisted from the disaggregation unit 6 coexist. 46 and a pulp supply unit 47.

The reticulated endless belt 45 conveys the pulp suspension PS while paper making. Specifically, the reticulated endless belt 45 is an endless belt formed by connecting and forming plate materials having a predetermined width in an annular shape having a predetermined width. is there. The predetermined width is set to a dimension slightly larger than the width dimension of the recycled paper RP to be manufactured by making the pulp suspension PS. Further, the plate material of the papermaking net structure is a material in which the pulp suspension PS can be appropriately filtered and dehydrated by the innumerable meshes of the papermaking net structure, and preferably, polypropylene (PP), polyethylene terephthalate (PET), It is made of a material having excellent corrosion resistance such as polyamide (PA) (generally called “nylon”) or stainless steel (SUS), and in the illustrated embodiment, it is a reticulated endless belt 45 made of PET. Further, the predetermined length is set to a length sufficient for the pulp suspension PS to be made into an appropriate basis weight in relation to the traveling speed of the mesh endless belt 45, and the paper making net conveyor in the apparatus case 5. It is set to a size that can be accommodated in the accommodating space of the portion 40.

As shown in FIGS. 1 and 2, the mesh endless belt 45 is suspended and supported so as to be able to rotate by way of a drive roller 65, a driven roller 66, a support roller 67, a dewatering roll 70, and a preliminary dewatering roll 74. The driving motor 46 is connected to the driving motor 46 through the driving roller 65.

The drive motor 46 that travels and drives the mesh endless belt 45 is specifically an electric motor and is electrically connected to the control unit 4. The drive motor 46 is also used as a travel drive source for a dewatering roll unit 41 and a drying belt conveyor unit 42, which will be described later, and a structure for this sharing, that is, a drive coupling mechanism will be described later.

The pulp supply unit 47 is a part that supplies the pulp suspension PS from the disaggregation unit 6 onto the mesh endless belt 45. Specifically, the pulp supply unit 47 supplies the pulp suspension PS to the mesh endless belt. The belt 45 is uniformly spread on the upper surface of the belt 45 and supplied.

The specific structure of the illustrated pulp supply unit 47 is shown in FIGS. That is, in the pulp supply section 47, the mesh endless belt 45 is disposed in an upwardly inclined shape in the running direction, and the formwork body 78 and the partition member 79 are respectively provided on both upper and lower positions of the mesh endless belt 45. It is arranged.

The mold body 78 is slidably disposed on the upper surface of the mesh endless belt 45, and as shown in FIGS. 7 and 8, the leading end, that is, the end in the traveling direction of the mesh endless belt 45 is opened. A planar U-shaped main body frame 80 and an overflow tank 81 provided at the rear end of the main body frame 80.

The main body frame 80 is arranged so that the lower end surface 80a thereof is in sliding contact with the upper surface of the mesh endless belt 45 that is inclined, and the inner frame width dimension L (see FIG. 7) of the main body frame 80 is to be manufactured. The width dimension of the paper RP is set.

The overflow tank 81 is integrally fixed to the rear end portion of the main body frame 80. The upper end edge 81a of the front wall is an overflow portion formed in a horizontal straight line. Further, a supply opening 90a of a suspension supply pipe 90 for supplying a pulp suspension PS of a pulp supply tank 85 to be described later is provided.

Then, when the pulp suspension PS is supplied and stored in the overflow tank 81 from the suspension supply pipe 90 and the overflow tank 81 is filled with the pulp suspension PS, the pulp suspension PS is further supplied. The pulp suspension PS overflows from the overflow portion 81a of the overflow tank 81 as indicated by an arrow in FIG. 8, and flows down onto a flat plate member 82 of the partition member 79 described later.

The partition member 79 is disposed so as to be slidable on the lower surface of the mesh endless belt 45, and as shown in FIGS. 7 and 8, a drainable drainage structure comprising a plurality of frame members 79a, 79a,. , And has a shape dimension for slidingly supporting the entire bottom surface of the mesh endless belt 45, and the base end side portion of the snowboard structure is closed by a flat plate member 82.

The flat plate member 82 is provided at a position corresponding to the overflow tank 81 of the mold body 78, and specifically corresponds to the flow down position of the pulp suspension PS that overflows from the overflow tank 81 as shown in FIG. Accordingly, the mesh of the flow-down supply site of the pulp suspension PS in the mesh endless belt 45 is supported in a closed state by the flat plate member 82.

Further, on the upstream side of the pulp supply unit 47, a pulp supply tank 85 for supplying the pulp suspension PS to the pulp supply unit 47 is provided.

In the pulp supply tank 85, the pulp suspension PS manufactured by the disaggregation unit 6 is supplied by the first suspension supply pump 31 and stored. In the pulp supply tank 85, a stirring device 86 for stirring the stored pulp suspension PS is provided, and the concentration of the pulp suspension PS is kept uniform. The stirring device 86 is a stirring pump or a stirring impeller, and a stirring impeller is employed in the illustrated embodiment.

The pulp suspension PS stored in the pulp supply tank 85 is detected by the lower limit water level float switch 87 and the upper limit water level float switch 88, and is detected by the second suspension supply pump (suspension supply pump) 89. The pulp supply unit 47 is configured to be continuously supplied into the overflow tank 81.

Thus, the pulp suspension PS stored in the pulp supply tank 85 is supplied into the overflow tank 81 of the pulp supply unit 47 by the second suspension supply pump 89 and supplied to the overflow tank 81. The pulp suspension PS overflows from the overflow tank 81 and then flows down onto the flat plate member 82 as shown in FIGS.

The pulp suspension PS is uniformly diffused on the upper surface of the mesh endless belt 45 by the staying action by the cooperation of the main body frame 80 of the mold body 78 and the partition member 79. Due to the traveling action in the direction, while being transported together with the mesh endless belt 45 while maintaining the width dimension defined by the main body frame 80, it is dehydrated by the self-weight filtering action by the mesh of the mesh endless belt 45, and the wet paper RP0 It becomes. This filtered and dewatered white water W (ultra-low-concentration pulp water filtered by a papermaking net when making paper) is recovered in the white water recovery tank 15 of the water supply device 9 as described above.

In the pulp supply unit 47, the traveling posture of the mesh endless belt 45 is horizontal so that the upper surface contour line in the cross section perpendicular to the traveling direction of the mesh endless belt 45 is horizontal. It is supported. By configuring in this way, the wet paper RP0 that is effectively prevented from causing a deviation in the horizontal width direction in the staying state of the pulp suspension PS by the cooperation of the main body frame 80 and the partition member 79 is adjusted. Becomes uniform in the left-right width direction, and as a result, the thickness of the entire paper surface becomes uniform.

Further, structurally, when the staying action by the cooperation of the main body frame 80 and the partition member 79 of the mold body 78 is effectively exhibited, the overflow tank 81 is omitted, and the pulp suspension The PS may be directly supplied onto the flat plate member 82 from the suspension supply pipe 90.

The dewatering roll unit 41 is a part that squeezes and dehydrates the wet paper RP0 on the mesh endless belt 45 in the linkage part of the paper making net conveyor unit 40 and the drying belt conveyor unit 42 described later.

Specifically, the smooth endless belt 95 of the drying belt conveyor section 42 on the downstream side and the netless endless belt 45 of the papermaking net conveyor section 40 on the upstream side are stacked vertically as shown in FIGS. 1 and 2. In addition, the smooth surface endless belt 95 and the mesh endless belt 45 are adjacent to each other in the upper and lower portions, and the dewatering roll unit 41 connects the mesh endless belt 45 and the smooth surface endless belt 95 together. It is set as the structure squeezed rolling from both upper and lower sides.

The dewatering roll section 41 includes a dewatering roll 70, a press roll 71, and a drive motor 72 as main parts, and a preliminary dewatering roll 74 and a slurry preventing roll 75 are provided as auxiliary sections.

The dewatering roll 70 is in rolling contact with the mesh endless belt 45 from the lower side. Specifically, the dewatering layer 70b made of a porous material having fine continuous pores is wound around the outer periphery of a cylindrical roll 70a made of a highly rigid material. Formed. The dehydrated layer 70b is made of a material excellent in hydrophilicity, water absorption and water retention, and is preferably made of a porous material having fine continuous pores excellent in flexibility. Further, as a winding structure of the dewatering layer 70b around the cylindrical roll 70a, the dewatering layer 70b having a certain thickness is wound once around the outer periphery of the cylindrical roll 70a, or the cylindrical dewatering layer 70b is externally fitted to the cylindrical roll 70a. There are a single layer structure and a multilayer structure in which a thin dewatering layer 70b is wound around the outer periphery of the cylindrical roll 70a a plurality of times.

The dewatering roll 70 of the illustrated embodiment has a cylindrical dewatering layer 70b made of an ultrafine continuous foam material having ultrafine continuous pores of micron size is fitted on the outer peripheral surface of a stainless steel cylindrical roll 70a. It has a single layer structure.

The press roll 71 rolls and presses a smooth surface endless belt 95 of the drying belt conveyor section 42 to be described later from the upper side. Specifically, the press roll 71 is in the form of a cylindrical roll made of a highly rigid material. The press roll 71 in the illustrated embodiment is a stainless steel cylindrical roll.

Specifically, the dewatering roll 70 and the press roll 71 are drivingly connected to a single drive motor 72, and the both rolls 70 and 71 are driven to rotate together. In this case, both rolls 70 and 71 are meshed endless belt 45 that is squeezed and pressed between outer peripheral surfaces thereof, and contact surfaces of smooth surface endless belt 95 (the bottom surface of mesh endless belt 45 and the smooth surface endless belt). 95, the outer peripheral surfaces of both rolls 70 and 71 are controlled to rotate so that they are in rolling contact with each other at substantially the same rotational speed.

In the illustrated embodiment, the drive motor 72 is shared with the drive motor 46 of the papermaking net conveyor unit 40, as will be described later.

  Then, by driving the drive motor 72 (56), the rolls 70, 71 roll and squeeze the belts 55, 95 from both the upper and lower sides so that the wet paper web RP0 on the mesh endless belt 45 is compressed. The moisture M contained in the water is absorbed by the dewatering roll 70 through the mesh endless belt 45 and dehydrated. The white water W that has been subjected to the compression dehydration is recovered in the white water recovery tank 15 of the water supply device 9.

  The specific mechanism of this pressure dehydration will be described with reference to FIG. 9A. By rotating both the rolls 70 and 71, the mesh endless belt 45 having the wet paper web RP0 placed on the upper surface and the smooth endless belt 95 are interposed between them. In a state where the wet paper RP0 is interposed, the paper is guided between the two rolls 70 and 71, and is squeezed by rolling from both upper and lower sides. Then, the moisture M contained in the wet paper RP0 is squeezed to the upstream side (the right side in the drawing) of both the rolls 70 and 71, but the upper smooth surface endless belt 95 has a smooth surface as will be described later. Since the structure has no holes, all of the squeezed moisture M passes through the fine continuous pores of the lower mesh endless belt 45 and is absorbed by the dewatering layer 70b of the dewatering roll 70.

The preliminary dewatering roll 74 and the slurry preventing roll 75 are provided to assist the pressing and dewatering action by the press roll 71 and the dewatering roll 70 in the dewatering roll unit 41.

As shown in FIG. 1, the preliminary dewatering roll 74 is disposed on the upstream side of the dewatering roll section 41 so as to roll and contact the mesh endless belt 45 from below to give tension.

The specific structure of the preliminary dewatering roll 74 is the same as that of the dewatering roll 70, and a dewatering layer 74b made of a porous material having fine continuous pores is wound around the outer periphery of a cylindrical roll 74a made of a highly rigid material. Become. In the preliminary dewatering roll 74 of the illustrated embodiment, a cylindrical dewatering layer 74b made of an ultrafine continuous foam material having ultrafine continuous pores of micron size is externally fitted on the outer peripheral surface of a stainless steel cylindrical roll 74a. It has a single layer structure.

The wet paper RP0, which is uniformly diffused on the upper surface of the mesh endless belt 45 and is transported together with the mesh endless belt 45, is combined with the dewatering roll 74 while being filtered and dehydrated by the mesh endless belt 45. Thus, the pressure dehydration action by the press roll 71 and the dewatering roll 70 is preliminarily assisted.

As shown in FIGS. 1 and 9 (b), the anti-slurry roll 75 rolls and presses the smooth surface endless belt 95 from above at a position near the upstream side of the dewatering roll portion 41, thereby smoothing the smooth surface endless belt. 95 is disposed so as to be pressed against the wet paper RP0 on the lower mesh endless belt 45.

The specific structure of the slurry prevention roll 75 is the same as that of the press roll 71. Specifically, the slurry prevention roll 75 is in the form of a cylindrical roll made of a highly rigid material. It consists of a stainless steel cylindrical roll.

Then, referring to FIG. 9 (b), the reticulated endless belt 45 and the smooth endless belt 95 on which the wet paper web RP0 is placed are rolled by the dewatering roll 70 and the press roll 71 from both the upper and lower sides in a pressing state. When being squeezed, the moisture M contained in the wet paper RP0 is squeezed to the upstream side (right side in the drawing) of both rolls 70 and 71, but at the same time, the dewatering roll 70 itself retains water as a result of the previous dehydration. Moisture moisture M is also squeezed out.

In this case, assuming that the slurry preventing roll 75 is not provided, the upper smooth surface endless belt 95 is located on the lower side at the upstream vicinity position of both rolls 70 and 71 as shown in FIG. The wet paper RP0 on the mesh endless belt 45 is separated from the wet paper RP0. For this reason, the water contained in the squeezed wet paper RP0 and the water retained by the dewatering roll 70 are combined. A part M ′ of the moisture M is not absorbed by the dewatering roll 70 via the mesh endless belt 45 but is absorbed by the wet paper RP 0, and the wet paper RP 0 may be slurried again.

On the other hand, when the anti-slurry roll 75 is provided, as shown in FIG. 9 (b), the upper smooth surface endless belt 95 is located on the lower side at the upstream vicinity position of both rolls 70 and 71. The wet paper RP0 on the mesh endless belt 45 is pressed against the wet paper RP0. For this reason, the water contained in the squeezed wet paper RP0 and the water retained by the dewatering roll 70 are combined. All of the moisture M does not fall down through the mesh endless belt 45 and is not reabsorbed by the wet paper RP0, so that the re-slurry of the wet paper RP0 can be reliably prevented. It preliminarily assists the pressing and dewatering action by the roll 71 and the dewatering roll 70.

A part of the moisture M of the wet paper RP0 squeezed to the upstream side by the pressing of both the rolls 70 and 71 is integrated with the dewatering layer 70b of the dewatering roll 70 and the wet paper RP0. 71. Since the dewatering layer 70b of the dewatering roll 70 is elastically restored to the original shape at the moment when it passes between both rolls 70, 71, the original paper is restored to its original shape, thereby further dehydrating action on the wet paper RP0. Happens. As a result, the moisture content of the wet paper RP0 decreases to a predetermined value.

The wet paper RP0 squeezed and dehydrated by the dewatering roll unit 41 is transferred and transferred from the upper surface of the lower mesh endless belt 45 to the lower surface of the upper smooth endless belt 95 in the downstream portion of the dewatering roll unit 41. It is conveyed with the smooth surface endless belt 95, and the drying process by the drying belt conveyor part 42 is implemented.

In addition, it is considered that the transfer action occurs due to the smooth surface structure of the smooth surface endless belt 95. That is, the surface of the lower mesh endless belt 45 is a fine uneven surface having a large number of fine continuous pores, whereas the surface of the upper smooth endless belt 95 is a smooth surface without holes. As a result, it is considered that the wet paper RP0 containing moisture is adsorbed by the surface tension with the surface of the smooth endless belt 95.

The drying belt conveyor section 42 is a portion where the wet paper RP0 formed by the paper making net conveyor section 40 and then pressed and dewatered by the dewatering roll section 41 is dried to form recycled paper RP. A drive motor 96 and a heating / drying unit 97 are provided.

The smooth surface endless belt 95 conveys the wet paper RP0 while being heated and dried. Specifically, the smooth surface endless belt 95 is an endless belt formed by connecting a plate having a smooth surface structure having a predetermined width in an annular shape having a predetermined length. .

The predetermined width is set to a size slightly larger than the width of the recycled paper RP to be manufactured, like the mesh endless belt 45. Further, the plate material of the smooth surface structure is a material that can finish one side surface of the wet paper RP0 to an appropriate smooth surface and can withstand the heating action by the heating and drying unit 97 described later, and preferably a fluororesin, It is made of a flexible heat-resistant material such as stainless steel. In the illustrated embodiment, a fluororesin belt is employed. Further, the predetermined length is long enough for the wet paper RP0 to be heated and dried to the recycled paper RP as a finished product, and is large enough to be accommodated in the accommodating space of the drying belt conveyor unit 42 in the apparatus case 5. Is set.

As shown in FIGS. 1 and 2, the smooth surface endless belt 95 includes a driving roller 100, driven rollers 101 and 102, a press roll 71, a slurry preventing roll 75, smooth surface finishing rolls 103 and 103, and a preliminary dewatering roll 74. Via the drive roller 100 and is coupled to the drive motor 96 via the drive roller 100.

The drive motor 96 that travels and drives the smooth surface endless belt 95 is also used as a travel drive source for the papermaking net conveyor unit 40 and the dewatering roll unit 41 as described above. It is shown in FIG.

In FIG. 5, 105 is a power transmission gear, 106 is a sprocket, 107 is a power transmission chain spanned between the sprockets 106 and 106, and 78 is a power transmission shaft.

The gear ratio of the power transmission gears 105, 105,..., Sprockets 106, 106,... Is that the drive source is a single drive motor 96, so that the drive roller 100, driven rollers 101, 102, press roll 71, slurry. All of the anti-oxidation roll 75, the smooth surface finishing rolls 103 and 103, and the preliminary dewatering roll 74 are set to be in rolling contact with the smooth surface endless belt 95 at substantially the same peripheral speed. .

The heating and drying unit 97 is a part that heats and dries the wet paper RP0 on the smooth surface endless belt 95, and includes a heater plate 109 disposed in the middle of the traveling path of the smooth surface endless belt 95 as a heating unit.

The heater plate 109 of the illustrated embodiment is provided in a horizontal running portion in the running path of the smooth surface endless belt 95. Specifically, the upper surface which is the holding surface of the wet paper RP0 in the smooth surface endless belt 95. Is provided in sliding contact with the opposite side surface, that is, the lower surface. As a result, the wet paper RP0 on the smooth surface endless belt 95 is indirectly heated and dried by the smooth surface endless belt 95 heated by the heater plate 109.

In addition, the two smooth surface finishing rolls 103 and 103 are disposed while the smooth surface endless belt 95 is traveling. Specifically, the smooth surface finishing rolls 103 and 103 are arranged in parallel to face the heater plate 109 in a horizontal traveling portion of the traveling surface of the smooth surface endless belt 95.

Then, both smooth surface finishing rolls 103, 103 sequentially roll and press the wet paper RP0 on the smooth surface endless belt 95, and the surface opposite to the one surface of the wet paper RP0 contacting the surface of the smooth surface endless belt 95. To an appropriate smooth surface.

In the illustrated embodiment, two smooth surface finishing rolls 103 and 103 are provided, but the number of smooth surface finishing rolls is appropriately increased or decreased according to the purpose.

On the downstream side of the heat drying unit 97 in the smooth surface endless belt 95, a peeling member 110 is provided. Specifically, the peeling member 110 is in the form of an elastic spatula having heat resistance. The peeling member 110 in the illustrated embodiment is a stainless steel plate having a thickness of about 0.1 to 0.3 mm that can be elastically deformed. Teflon (registered trademark) processing is applied to the outer peripheral surface, the base end portion is supported on the fixed side (not shown), and the leading edge 110a is elastically applied to the surface of the smooth endless belt 95. It is abutted and locked.

Then, the dry paper, that is, recycled paper RP, transported after being dried on the smooth surface endless belt 95 is sequentially peeled from the holding surface of the smooth surface endless belt 95 by the leading edge 110a of the peeling member 110. .

In this connection, a fixed-size cutter 111 is provided on the downstream side of the peeling member 110, that is, at the end of the traveling path of the smooth surface endless belt 95. Although the specific structure of the fixed-size cutter 111 is not shown in the figure, for example, a conventionally known both-side slitter is used, and a structure that performs a guillotine cut operation by a solenoid can be adopted.

The recycled paper RP peeled from the smooth surface endless belt 95 is cut into a predetermined length (in the illustrated embodiment, the vertical dimension of the A4 plate) by the fixed size cutter 111, and has a reusable shape dimension. The recycled paper RP is discharged from the discharge port 112 of the apparatus case 5. In this case, cutting at a predetermined length is performed by measuring the belt feed amount of the smooth surface endless belt 95 with a sensor such as a proximity switch.

IV. Control unit 4:
The control unit 4 automatically controls the operation of each drive unit of the disaggregation unit 6 and the paper making unit 3 described above. Specifically, the microcomputer includes a CPU, a ROM, a RAM, an I / O port, and the like. It consists of

  The control unit 4 incorporates a program for continuously executing the pulp manufacturing process of the pulp manufacturing unit 2 and the paper making process of the paper making unit 3, and various information necessary for driving each driving unit, for example, The driving time of the stirring device 8 in the disaggregation unit 6 and the operation timing of the water supply device 9, or the traveling speed of the conveyor units 40 and 42 in the paper making unit 3, the driving time of the heating and drying unit 97, and the operation timing of the fixed size cutter 111, etc. However, they are selectively input and set as data or with a keyboard or the like in advance.

In addition, as described above, the float switch 18, 19, 30, 87, 88 and the drive units 12, 16, 31, 46 (72, 96), 89, 105, 111 are electrically connected to the control unit 4. The control unit 4 controls each of the drive units 12, 16, 31, 46 (72, 96), 89, 105, 111 in accordance with these various actually measured values and data.

  Thus, the used paper recycling apparatus 1 configured as described above is activated when the power is turned on, and the drive units are automatically controlled in association with each other by the control unit 4 to execute the following steps. As a result, the used paper UP, UP,... Put into the used paper recycling apparatus 1 is disaggregated by the disaggregation unit 6 to effectively prevent leakage / outflow of confidential information and personal information written on the used paper UP. The used paper pulp UPP is made by the paper making unit 3 and regenerated into recycled paper RP.

i) When the heater plate 109 of the heat drying unit 97 starts to generate heat and rises to a predetermined temperature, the predetermined temperature is automatically maintained thereafter.

ii) The disaggregation unit 7 starts operation, and a predetermined amount of water W is supplied from the water supply device 9 to the stirring tank 10 of the stirring device 8. This predetermined amount is the minimum amount required to disaggregate and beat used paper UP, UP,... Put into the agitation tank 10 (about 3 liters in the illustrated embodiment), and the water supply pump 16 is driven by a timer. This is done by controlling the water supply time.

iii) Recycled paper UP, UP,... are set from the charging port 10a of the stirring device 8 (the number of sheets set in accordance with the processing capacity of the device 1 (amount) (in the case of the illustrated embodiment, about 8 A4 plates≈32 g) )) And the start switch is turned on, the agitator 8 starts operation, and the agitation impeller 11 rotates forward for a predetermined time (3 to 5 minutes in the case of the embodiment) by the timer operation. By repeating the reverse operation, the used paper UP, UP,... Are disaggregated and beaten to become used paper pulp UPP.

iv) When the used paper UP, UP,... becomes the used paper pulp UPP by the timer operation of the stirring impeller 11 for a predetermined time, the beating unit 7 also starts operation, the communication opening 20b of the beating tank 20 is opened, and the beater roller 21 begins to rotate.

As a result, the beating tank 20 and the stirring tank 10 constitute a pulp circulation tank, and the used paper pulp UPP that has been disaggregated and beaten by the stirring impeller 11 flows into the beating tank 20 and flows in the rotation direction of the beater roller 21, and the disaggregation unit 7 is then recirculated to the stirring tank 20 and then circulated through the pulp circulation tanks 10 and 20 for a predetermined time by a timer operation (5 to 30 minutes in the case of the illustrated embodiment). By repeatedly receiving only the stirring disaggregation by the disaggregation unit 6 and the beating by the beating unit 7, the used paper pulp UPP is beaten until the optimum paper strength is ensured for papermaking in the papermaking unit 3 in the subsequent process. .

v) When the used paper pulp UPP is sufficiently beaten, the operation of the beating unit 7 is stopped, the drain valve of the stirring device 8 is opened, and the entire amount of the used paper pulp UPP in the stirring tank 10 is discharged to the concentration adjusting tank 29. Supplied.

In this case, also in the stirring tank 10, the water supply from the water supply device 9 to the stirring tank 10 and the rotation of the stirring impeller 11 are performed while the used paper pulp UPP is being discharged. The opening time of the discharge valve, cleaning water supply, and rotation of the stirring impeller 11 are all sequentially performed by a timer.

vi) In parallel with or after the waste paper pulp UPP is discharged and supplied to the concentration adjusting tank 29, the white water W is supplied from the concentration adjusting water supply device 9 to the concentration adjusting tank 29. The supply of white water W is continued until the float switch 30 in the concentration adjustment tank 29 detects the amount of water and works. By the addition of the white water W, the concentration of the used paper pulp UPP is adjusted to obtain a pulp suspension PS having a predetermined concentration.

  In the illustrated embodiment, the amount of white water W in the concentration adjustment tank 29 is 30 liters relative to the total amount of waste paper pulp UPP (approximately 32 g of waste paper UP + 3 liters of water W). Water is added until the total volume (total amount) reaches 30 liters, whereby a pulp suspension PS having a concentration of about 0.1% is prepared.

vii) When the float switch 30 is turned ON, the first suspension supply pump 31 is operated and the pulp suspension PS whose concentration adjustment is completed in the concentration adjustment tank 29 is supplied to the pulp supply tank 85. Is done. This total amount is also supplied by a timer operation.

While the pulp suspension PS is being supplied to the pulp supply tank 85, the water in the white water recovery tank 15 is not entered into the concentration adjustment tank 29 (prevented from changing the adjusted concentration).

viii) When the float switch 87 for the lower limit water level in the pulp supply tank 85 (disposed corresponding to the minimum water level required for starting papermaking) is turned ON, the drive motor 46 (72, 96) is driven. Then, the netless endless belt 45 is driven to start the paper making process, and the pulp suspension PS in the pulp supply tank 85 is moved into the overflow tank 81 of the pulp supply unit 47 by the second suspension supply pump 89. Supplied to.

In this case, the drive motor 46 (72, 96) is driven with a predetermined time lag for the time during which the pulp suspension PS is sent to the pulp supply unit 47, and the mesh endless belt 45 is delayed.

The drive motors 46 (72, 96) are not only the mesh endless belt 45 but also the rotational drive sources of the rolls 70, 71 of the dewatering roll unit 41 and the travel drive source of the smooth surface endless belt 95 of the drying belt conveyor unit 42. , And also as a rotational drive source for the smooth surface finishing rolls 103, 103, these are also operated in conjunction with each other at the same time.

ix) The pulp suspension PS supplied to the overflow tank 81 overflows from the overflow tank 81 and flows down onto the flat plate member 82 of the partition member 79, and the main body frame 80 and the partition member 79 of the mold body 78. Is uniformly diffused on the upper surface of the mesh endless belt 45. At the same time, due to the traveling action of the mesh endless belt 45, the diffused pulp suspension PS is conveyed while being dragged by the mesh endless belt 45 while maintaining the width L defined by the main body frame 80, It is filtered and dehydrated by the mesh of the mesh-like endless belt 45 to form the wet paper RP0.

The white water W filtered and dehydrated by the mesh endless belt 45 is collected in the white water collection tank 15 of the water supply device 9 and is circulated and reused.

x) The wet paper RP0 transported together with the mesh endless belt 45 is changed in posture from the inclined traveling state to the horizontal traveling state at the preliminary dewatering roll 74, and is synergistic due to the cooperative action with the water absorption function of the preliminary dewatering roll 74. After being lightly dehydrated in combination with the effect, it is sent to the dewatering roll unit 41 while being sandwiched between the mesh endless belt 45 and the smooth endless belt 95 by the pressing action of the slurry preventing roll 75.

xi) In the dewatering roll unit 41, the wet paper RP0 sandwiched between the mesh endless belt 45 and the smooth surface endless belt 95 by the pressing action of the slurry preventing roll 75 is interposed between the dewatering roll 70 and the press roll 71. The rolls 70 and 71 pass while being squeezed in a pinched manner from both the upper and lower sides. Thereby, as described above, the wet paper RP0 is dehydrated to a predetermined moisture content by the pressure dehydration mechanism as shown in FIG.

xii) The wet paper RP0 squeezed and dewatered by the dewatering roll unit 41 is transferred and transferred from the lower mesh endless belt 45 to the upper smooth surface endless belt 95 in the downstream portion of the dewatering roll unit 41. While being transported together with the smooth surface endless belt 95, it is heated and dried by the heater plate 109 of the drying belt conveyor section 42 to become recycled paper RP.

  In parallel with this, the wet paper RP0 or the recycled paper RP continuously rolls two smooth surface finishing rolls 103, 103 arranged on the opposite side of the heater plate 109 with respect to the smooth surface endless belt 95. By pressing, the surface on the side opposite to the surface in contact with the surface of the smooth surface endless belt 95 is finished to an appropriate smooth surface.

xiii) The recycled paper RP that has been surface-finished by the two smooth surface finishing rolls 103 and 103 is held in a fixed state on the surface of the smooth surface endless belt 95, and the smooth surface endless belt is formed by the leading edge 110 a of the peeling member 110. The paper is sequentially peeled from the holding surface 95 and cut into a predetermined length by the fixed-size cutter 111 and is discharged from the discharge port 112 of the apparatus case 5 as reusable recycled paper RP.

ixv) When the pulp suspension PS in the pulp supply tank 85 is reduced from the minimum amount of water required for the start of papermaking (almost empty state), the lower limit water level float switch 87 is turned off, and the second suspension supply pump 89 While the supply of the pulp suspension PS is stopped, the driving motor 46 (72, 96) is also stopped, and the paper making process is stopped.

In this case, the drive motor 46 (72, 96) stops driving with a predetermined time lag until the entire amount of the pulp suspension PS in the paper making process becomes the recycled paper RP and is discharged from the discharge port 112. To do.

xv) Thereafter, the process returns to the step iii), and a set number of used papers UP, UP,... are added (the number (amount) set from the processing capability of the apparatus 1) (A4 in the case of the illustrated embodiment). When about 8 plates ≈ 32 g)) are loaded and the start switch is turned on again, steps iv) to ixv) are sequentially performed.

  In addition, the above process shows operation | movement required for used paper pulping and recycled paper making, and interlock control, such as other safety measures, is added to the actual driving | operation.

Thus, in the used paper recycling apparatus 1 configured as described above, the following effects can be obtained, and it can be installed not only in large offices but also in small stores and general homes, It is environmentally friendly and the running cost can be kept low. Moreover, it is possible to reliably prevent leakage and outflow of various information such as confidential information and personal information, and to maintain high confidentiality.

(1) A pulp manufacturing unit 2 that separates and beats used paper UP to produce used paper pulp UPP in a furniture-sized device case 5, and makes recycled paper pulp UPP manufactured by the pulp manufacturing unit 2 to make recycled paper. Since the paper making unit 3 for producing the RP and the control unit 4 for driving and controlling the pulp production unit 2 and the paper making unit 3 in conjunction with each other are provided, the waste paper UP is generated at its own place without being discarded. In addition to reducing waste paper waste and helping to solve the dust problem, limited resources can be used effectively.

  In particular, this type of used paper UP has not been recycled due to security problems, and can be recycled and reused at the source of the used paper UP as described above, so that the effect of effective resource utilization is remarkable. .

(2) In addition, by installing compact used paper recycling equipment that has the same functions as large-scale equipment in paper mills and used paper recycling factories at the location where used paper UP occurs, it can be used in small stores and general households. Further, it is possible to continuously circulate the paper, and it is economical because various expenses such as transportation costs and incineration costs required for collecting and discarding the used paper UP are unnecessary.

(3) The pulp manufacturing unit 2 includes a disaggregation unit 6 that crushes and disaggregates used paper UP and a beating unit 7 that beats the used paper UP disaggregated by the disaggregation unit 6. The disaggregation unit 6 and the beating unit 7 is a circulation type that circulates used paper pulp UPP, so that the beating of used paper pulp UPP is efficiently performed according to the purpose, and the optimum beating effect is obtained. As a result, good paper is used for recycled paper RP. Quality can be ensured.

(4) Waste paper UP is broken down to the fiber level (pulp) by pulp manufacturing department 2 which breaks and beats waste paper UP to produce waste paper pulp UPP, and the characters and diagrams described there are completely broken down It disappears and cannot be restored. As a result, it is possible to reliably prevent leakage / outflow of confidential information and personal information composed of these characters and diagrams, and maintain high confidentiality.

(5) The device structure is compact and can be installed not only in large offices, but also in small stores and general households. From this point of view, the leakage and outflow of various information such as confidential information and personal information is ensured. Can be prevented.

(6) By making the water W used in the pulp manufacturing unit 2 into a water circulation system in which the water W dehydrated and recovered in the paper making unit 3 is returned and used, and / or the pulp manufacturing unit 2 and Since the drive source of the papermaking unit 3 is an electric drive source that is driven by a general household AC power source, it is environmentally friendly and running costs can be kept low. This is also economical.

(7) The used paper UP is disposed at the place where the used paper UP is generated, and the generated pulp UP is disaggregated by the pulp manufacturing unit 2 into the used paper pulp UPP, and the used paper pulp UPP is made by the paper making unit 3 Recycled paper RP is used, and as a result, the used paper UP is configured to be recycled as recycled paper RP within the place where it is generated, so that various information such as characters and diagrams described in the used paper UP can be obtained. From this point, there is no spread of waste paper UP, and it is possible to reliably prevent leakage and leakage of confidential information and personal information, maintain high confidentiality, and save resources. It can also be used effectively.

  That is, by using the used paper recycling apparatus 1 of the present embodiment, the various information described above outside a certain system (for example, a school, a hospital, a city hall, a law office, a patent office, a general household, etc.) related to the use. There is no risk of spreading.

In other words, for example, in the case of a conventionally known shredder, even if the waste paper is cut into small pieces and the characters and diagrams described there become unreadable, the cut paper pieces are discarded at an incinerator or the like. Therefore, the diffusion outside the system cannot be completely prevented. In this regard, it is conceivable to store in a warehouse in the system for the purpose of preventing the diffusion outside the system, but on the other hand, it is necessary to secure such a storage place, and the target paper is also used once. The use of only is inefficient from the viewpoint of effective use of resources.

On the other hand, according to the used paper recycling apparatus 1 of the present embodiment, various information described in the used paper UP is never diffused outside the system related to its use, and resources are effectively used. Can do.

Embodiment 2
This embodiment is shown in FIGS. 10 to 12 and is a slightly modified version of the used paper recycling apparatus 1 of the first embodiment.

That is, in the used paper recycling apparatus 1 of the present embodiment, the specific structures of the dewatering roll unit 41 and the drying belt conveyor unit 42 in the paper making unit 3 of the first embodiment are slightly modified.

The dewatering roll unit 41 of the present embodiment is provided with a draining roll 120 as an auxiliary unit of the dewatering roll 70, the press roll 71, and the drive motor 72, which are main parts, in addition to the preliminary dewatering roll 74 and the slurry preventing roll 75. ing.

The drainage roll 120 squeezes and drains water contained in the dewatering layer 70 b of the dewatering roll 70, and is in the form of a small-diameter cylindrical roll made of a highly rigid material. Be contacted.

And with the rotation operation of the dewatering roll 70, the drainage roll 120 rolls and compresses the dewatering layer 70b of the dewatering roll 70, and the water absorbed in the dewatering layer 70b is pressed and drained.

By adopting such a configuration, the waste paper pulp UPP that has been beaten is inferior in filtration and dewatering properties, and may not be easily dewatered from the mesh endless belt 45. Therefore, the amount of drainage of the dewatering layer 70b is increased as much as possible, and the squeezing and dewatering action in the dewatering roll unit 41 can be more effectively exhibited as compared with the first embodiment.

  For the same purpose, in the illustrated embodiment, a drainage roll 121 is also provided auxiliary to the preliminary dewatering roll 74. The specific structure of the drainage roll 121 is the same as that of the drainage roll 120.

Further, specifically, the drying belt conveyor unit 42 is provided with a plurality of heater plates 109 constituting the heating and drying unit 97.

In the present embodiment, the heater plate 109 in the first embodiment is divided into three parts, and the heating temperatures of the heater plates 109a, 109b, and 109c can be individually adjusted.

In the present embodiment, the number of smooth surface finishing rolls 123 provided facing the heater plates 109a, 109b, and 109c is increased from the two configuration of the first embodiment to the six configuration. These six smooth surface finishing rolls 123, 123,... Face the entire surface of the heater plates 109a, 109b, 109c and are arranged in parallel in parallel at a small interval.

Moreover, the smooth surface finishing roll 123 of this embodiment has a function as a heating roll by incorporating a heater therein.

Thus, in the heating and drying unit 97 configured as described above, the wet paper RP0 on the smooth surface endless belt 95 is heated and dried by the heater plates 109a, 109b, and 109c. , The wet paper RP0 is wound around the smooth surface finishing rolls 123, 123,..., And, for example, the first heater plate 109a is dried to a moisture content that does not wrap around the smooth surface finishing rolls 123, 123,. .

Further, in the subsequent heater plates 109b, 109c and the like, the wet paper RP0 is sequentially rolled and pressed from the upper side by the smooth surface finishing rolls 123, 123,... And these smooth surface finishing rolls 123, 123,. The wet paper RP0 is heated from both the front and back sides by the heater plates 109b and 109c, and the front and back sides are dried to an appropriate smooth surface without making wrinkles on the paper surface.

By having such a configuration, the waste paper pulp UPP that has been beaten is not only inferior in filtration and dewatering properties as described above, but also cannot easily dissipate steam in its drying, Where there is a problem that distortion such as curling and undulation is likely to occur, these problems can be solved.
Other configurations and operations are the same as those of the first embodiment.

Embodiment 3
This embodiment is shown in FIGS. 13 and 14 and is a slightly modified version of the used paper recycling apparatus 1 of the first embodiment.

That is, the used paper recycling apparatus 1 of this embodiment is a general-purpose type that can be installed and used in business sites such as offices of public offices and general companies, or in personal places such as general households. A compact appearance as shown in FIG.

In the used paper recycling apparatus 1, the drive sources of the pulp manufacturing unit 2 and the paper making unit 3 which are the component parts of the used paper recycling apparatus 1 are set as electric drive sources driven by a general household AC power source as in the first embodiment. As shown in FIG. 13, the power cord 130 is provided with a plug 132 at the tip of the power cord 130 that can be plugged into a power outlet 131 installed in an indoor wall of an office of a general company or a general household.

As shown in FIG. 13, the apparatus case 5 is a box having a substantially rectangular parallelepiped shape smaller than a copying machine used in an office or the like, and casters 133, 133,. It is provided and can move freely on the installation floor F.

  In addition, the top plate portion of the device case 5 is provided with a loading port 10a for loading used paper UP and an operation panel 140 including various operation buttons including a start switch, and a front portion of the upper end portion. Is provided with a recycled paper container 141 for stocking recycled paper RP, RP,. The recycled paper storage unit 141 is provided with a discharge port 112 of the apparatus case 5 facing the recycled paper RP, RP,... Discharged from the discharge port 112 is sequentially stacked and stored. . The recycled paper container 141 is provided with an openable transparent protective cover 142 that can be opened and closed.

Further, a shredder portion 143 is provided at the inlet 10 a of the agitation tank 10. The shredder unit 143 is for preliminarily cutting the used paper UP, UP,... That has been input to the input port 10a so as to increase the efficiency of disaggregation and beating by the stirring device 8.

The specific structure of the shredder portion 143 includes a mechanism for cutting the used paper UP into small pieces of paper, as in the known shredder, and the cutting size by the cutting mechanism is set to satisfy the following conditions. .

In other words, the conventionally known shredder effectively divides the characters and diagrams on the used paper UP to a state where it cannot be visually recognized or deciphered, and effectively leaks or leaks confidential information or personal information composed of these characters and diagrams. However, the main purpose of the shredder unit 143 in this embodiment is to manufacture the cut waste paper CUP, CUP,... The used paper pulp UPP is cut into a size having desirable characteristics as a raw material pulp of recycled paper RP to be produced in the papermaking section 3 in the next step.

For this purpose, the cutting size of the cutting mechanism of the shredder unit 143 is set to such an extent that the paper fiber of the cut waste paper CUP is not cut below the size required as the raw material pulp of the recycled paper RP. Therefore, as long as this condition is satisfied, various methods such as a double cut method and a cross cut method can be selectively employed as the specific configuration of the cutting mechanism.

Thus, when the used paper UP is input from the input port 10a, the used paper UP is preliminarily cut by the shredder unit 143 to be cut into a predetermined size of the used waste paper CUP, CUP,. By the normal rotation / reverse rotation operation of the stirring impeller 11 of 8, the water W supplied from the water supply device 9 is stirred for a predetermined time, thereby being disaggregated and beaten to become used paper pulp UPP. The time required for the disaggregation / beating is shorter than that in the first embodiment.

Other apparatus components, that is, the water supply device 9 of the disaggregation unit 6 of the pulp production unit 2, the beating unit 7 and the pulp concentration adjustment unit 28, the papermaking net conveyor unit 40 of the papermaking unit 3, the dewatering roll unit 41 and the drying belt conveyor unit 42 and the specific structure and operation of the control unit 4 are substantially the same as those of the first embodiment except for the downsizing and downsizing associated with the downsizing of the device case 5.

Embodiment 4
This embodiment is shown in FIG. 15, and is a slight modification of the used paper recycling apparatus 1 of the first embodiment.

That is, the used paper recycling apparatus 1 of the present embodiment is a large-sized apparatus that is installed and used particularly in business sites such as large-scale offices such as government offices and general enterprises and dedicated processing rooms.

Although the illustration of the specific internal structure of the used paper recycling apparatus 1 is omitted, the same apparatus components as those in the first to third embodiments, that is, the disaggregation section 6, the beating section 7 and the pulp concentration adjusting section of the pulp manufacturing section 2 28, and the papermaking net conveyor unit 40, the dewatering roll unit 41, the drying belt conveyor unit 42, etc. of the papermaking unit 3 are respectively increased in size, improved in processing function, or rearranged, and used paper UP , Waste paper UP,...

Thus, in the used paper recycling apparatus 1 configured as described above, when having a large installation space, the used paper UP, the used paper UP,... In this case, the pulp manufacturing unit 2 and the paper making unit 3 in the apparatus case 5 are successively processed as described in the first embodiment, and then sequentially discharged to the discharge port (illustrated). Are continuously discharged as a large amount of recycled paper RP, RP,... To the recycled paper storage unit 141, and these recycled paper RP, RP,. ) Are stacked and arranged as shown in the figure.

Embodiment 5
This embodiment is shown in FIG. 16, and is a slight modification of the used paper recycling apparatus 1 of the first embodiment.

That is, the used paper recycling apparatus 1 according to the present embodiment has a narrow installation space such as one corner of the top 145a of the office desk 145 as shown in the figure, particularly in a small office or a private home. It is a small tabletop for use.

The specific internal structure of the used paper recycling apparatus 1 is not shown in the same manner as in the fourth embodiment, but is similar to that in the first to third embodiments, that is, the disaggregation section 6 of the pulp manufacturing section 2, beating Section 7 and pulp concentration adjusting section 28, and papermaking net conveyor section 40, dewatering roll section 41 and drying belt conveyor section 42 of papermaking section 3 are each reduced in size and simplified, or limited in processing function. In other words, the configuration is suitable for a small amount of used paper UP, used paper UP,.

In the used paper recycling apparatus 1 configured as described above, a small amount of used paper UP, UP, which is placed on the office desk 145 as shown in the figure and is generated daily in daily work or life. Are sequentially processed as described in the first embodiment in the pulp manufacturing unit 2 and the papermaking unit 3 in the apparatus case 5 by sequentially feeding them one by one into the inlet 10a as they occur. The paper is sequentially discharged from the discharge port 112 as recycled paper RP to the recycled paper storage unit 141 and is automatically stacked.

In addition, Embodiment 1-5 mentioned above shows the suitable embodiment of this invention to the last, This invention is not limited to this, A various design change is possible within the range. For example, the following modifications are possible.

(1) In the illustrated embodiment, the heater plate 109 is employed as the heating unit of the heating and drying unit 97. However, instead of the heater plate 109, other heating means such as a rotatable heater roll or a warm air heater are used. It is also possible to adopt.

That is, although not specifically illustrated, when the heater roll is provided as the heating unit of the heating and drying unit 97, for example, the heater roll is arranged so as to directly contact the wet paper RP0 on the smooth surface endless belt 95. The wet paper RP0 on the smooth surface endless belt 95 is directly heated and dried by the heater roll.

Further, when the warm air heater is provided as the heating unit of the heating and drying unit 97, for example, the warm air heater blows warm air on the wet paper RP0 on the smooth surface endless belt 95, and the smooth surface endless belt. The wet paper RP0 on 95 is directly heated and dried by the hot air heater.

(2) About the concrete processing process by the control part 4, other than the process (the pulp manufacturing process of the pulp manufacturing part 2 and the paper making process of the paper making part 3) performed in Embodiment 1 by change of a program etc. It is also possible to set it as a process, and the design can be appropriately changed according to the purpose or according to the processing capability.

It is a front view which shows the whole structure of the used paper reproduction | regeneration apparatus which is Embodiment 1 of this invention incising an apparatus case. It is a perspective view which shows a beating part of the pulp manufacturing part in the used paper recycling apparatus partly seeing through. Similarly, FIG. 3A is a side view showing the inside of the beating tank by cutting a part of the beating tank, and FIG. 3B is a front view showing the same part of the beating tank. FIG. 4A is a side view, and FIG. 4B is a front view showing a partially cut away view. It is a perspective view which shows schematic structure of the paper making part of the used paper recycling apparatus. It is a top view which shows the drive connection mechanism in the paper making part. It is a perspective view which expands and shows the structure of the pulp supply part in the papermaking part. It is a front view which similarly shows the structure of the pulp supply part partially cut away. FIG. 9A is a schematic diagram for explaining a specific mechanism of squeezing and dewatering of the dewatering roll section in the paper making section, FIG. 9A shows a basic squeezing and dewatering mechanism, and FIG. The compression dehydration mechanism in the case of being provided in the upstream vicinity position of a roll part is shown. It is a front view which shows the whole structure of the used paper reproduction | regeneration apparatus which is Embodiment 2 of this invention incising an apparatus case. It is a perspective view which shows schematic structure of the paper making part of the used paper recycling apparatus. It is a top view which shows the drive connection mechanism in the paper making part. It is a perspective view which shows the external appearance structure of the used paper recycling apparatus which is Embodiment 3 of this invention. FIG. 2 is a front view showing the overall configuration of the used paper recycling apparatus with the apparatus case cut open. It is a perspective view which shows the external appearance structure of the used paper recycling apparatus which is Embodiment 4 of this invention. It is a perspective view which shows the external appearance structure of the used paper recycling apparatus which is Embodiment 5 of this invention.

UP Waste paper CUP Cut waste paper W Water (white water)
UPP Waste paper pulp PS Pulp suspension RP0 Wet paper RP Recycled paper M, M 'Moisture F Installation floor 1 Waste paper recycling equipment 2 Pulp production department (pulp production equipment)
3 Papermaking part 4 Control part 5 Device case 6 Disaggregation part 7 Beating part 8 Stirrer (stirring means)
9 Water supply equipment (water supply means)
DESCRIPTION OF SYMBOLS 10 Stirring tank 10a Input port 10b Drain port 11 Stirring impeller 12 Drive motor 15 White water collection tank 16 Water supply pump 17 Concentration adjustment water supply pump 20 Beating tank 20a Cylindrical inner peripheral wall surface 20b Communication opening 21 Beater roller 22 Drive motor 24 Beating blade 25 Receiving blade 26 Adjustment bolt 28 Pulp concentration adjustment unit 29 Concentration adjustment tank 31 First suspension supply pump 40 Papermaking net conveyor unit 41 Dewatering roll unit 42 Drying belt conveyor unit 45 Reticulated endless belt 46 Drive motor 47 Pulp supply unit 70 Dehydration roll 71 Press Roll 72 Drive motor 74 Preliminary dewatering roll 74a Cylindrical roll 74b Dewatering layer 75 Slurry prevention roll 78 Mold body 79 Partition member 80 Main body frame 81 Overflow tank 81a Overflow section 82 Flat plate member 85 Pulp supply tank 86 Stirrer 89 Second suspension Liquid supply port Flops (suspension feed pump)
95 Smooth endless belt
96 Drive motor
97 Heating and drying section
103 Smooth surface finish roll
109 Heater plate
109a Heater plate
109b Heater plate
109c Heater plate
110 Peeling member
111 fixed size cutter 120 drainage roll 121 drainage roll 123 smooth surface finishing roll 130 power cord 131 power outlet 132 plug plug 133 caster (moving means)
141 Recycled paper container 143 Shredder unit

Claims (3)

This is a device that constitutes the pulp supply unit of a papermaking machine that produces recycled paper by making wastepaper pulp produced in the pulp production department in the previous process in a furniture-size wastepaper recycling apparatus that can be placed where wastepaper is generated. And
A partition member disposed so as to be slidable on the lower surface of the mesh endless belt traveling on the paper making net conveyor unit, and disposed on the upper surface of the mesh endless belt so as to be slidable and sent from the pulp manufacturing unit. A mold body that defines the supply width of a slurry-like pulp suspension in which water and waste paper pulp coexist,
The partition member has a slat structure that slidably supports the lower surface of the mesh endless belt, and a flat plate that supports the mesh of the mesh endless belt in a closed state at a flow-down supply site of the pulp suspension on the base end side. Members are provided,
The mold body includes a planar U-shaped main body frame in which a traveling direction side front end portion of the mesh endless belt is opened, and an overflow tank provided at a rear end portion of the main body frame,
The pulp suspension supplied into the mold body overflows after being temporarily stored in the overflow tank, and is configured to flow down on the flat plate member of the partition member ,
The mesh suspension endless belt that travels in a state where the pulp suspension supplied into the mold body is disposed in an upwardly inclined manner toward the traveling direction by the staying action of the mold body and the partition member. A pulp supply device for used paper recycling apparatus, wherein the pulp supply device is configured to be uniformly diffused and supplied to the upper surface . The main body frame has an inner width dimension set to a width dimension of recycled paper to be manufactured to define the supply width of the pulp suspension, and a lower end surface of the main body frame on an upper surface of the mesh-like endless belt that is inclined. The pulp supply device for used paper recycling apparatus according to claim 1 , wherein the pulp supply device is disposed so as to be in sliding contact. The overflow tank is integrally fixed to the rear end portion of the main body frame, and the upper end edge of the front wall is formed in a horizontal straight line.
2. The pulp supply apparatus for used paper recycling apparatus according to claim 1 , wherein the upper edge of the front wall of the overflow tank functions as an overflow section for pulp suspension.

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