JP5921316B2 - Paper making apparatus and waste paper processing apparatus - Google Patents

Description

  The present invention relates to a papermaking apparatus that produces wet paper by dehydrating a pulp-containing liquid, and a used paper processing apparatus that includes the papermaking apparatus.

  Conventionally, as this type of papermaking apparatus, for example, as shown in FIG. 10, a net-like endless belt 102 wound between a plurality of rollers 101 and a supply body that supplies a pulp-containing liquid 103 onto the endless belt 102. And 104. The supply body 104 includes a mold body 105 and an overflow tank 106 provided at a rear end portion in the mold body 105.

  The mold body 105 has a pair of width regulating plates 107 that regulate the flow of the pulp-containing liquid 103 that has overflowed from the overflow tank 106 and is supplied onto the endless belt 102 in the belt width direction W. The lower ends of these width regulating plates 107 are in sliding contact with the upper surface of the endless belt 102.

  A plurality of draining plates 108 for draining the lower surface of the endless belt 102 are provided below the mold body 105. These draining plates 108 are provided along the belt width direction W, and are arranged in parallel in the belt length direction L with a predetermined interval.

  According to this, the endless belt 102 rotates in one direction, and the pulp-containing liquid 103 in the overflow tank 106 overflows and is supplied onto the endless belt 102, whereby the pulp-containing liquid 103 is conveyed by the endless belt 102. The wet paper is produced from the pulp-containing liquid 103 while being filtered and dehydrated. At this time, since the flow of the pulp-containing liquid 103 supplied onto the endless belt 102 is regulated by the both width regulating plates 107 in the belt width direction W, wet paper having a prescribed width can be manufactured.

  The paper making apparatus as described above is described in, for example, Patent Document 1 below.

JP2007-23450

  However, in the above conventional type, the endless belt 102 rotates while being supported by the draining plate 108. At this time, as shown in FIG. 11, the endless belt 102 may wave up and down between the draining plates 108. In this case, a gap 109 is formed between the lower end portion of the width regulating plate 107 and the upper surface of the endless belt 102, and the pulp-containing liquid 103 between the two width regulating plates 107 leaks from the gap 109 to the outside of the width regulating plate 107. There is a problem.

  In addition, as shown in FIG. 12, when the endless belt 102 is a mesh-like wire belt composed of a plurality of wires 110, minute irregularities are generated on the surface of the endless belt 102, and the lower end portion of the width regulating plate 107 and the endless belt A minute gap 111 is generated between the wire 110 and the wire 110, and the pulp-containing liquid 103 between the width regulating plates 107 leaks from the gap 111 to the outside of the width regulating plate 107.

If the pulp-containing liquid 103 leaks to the outside of the width regulating plate 107 as described above, there is a possibility that the width of the wet paper becomes wider than the specified width or the thickness of the wet paper becomes non-uniform depending on the degree of leakage. is there.
An object of this invention is to provide the papermaking apparatus and waste paper processing apparatus which can prevent the pulp containing liquid between both width control members to leak to the outer side of a width control member.

In order to achieve the above object, the first invention is a papermaking apparatus for producing wet paper by dehydrating a pulp-containing liquid,
A papermaking belt that can rotate on an endless track and has water permeability, a supply body that supplies the pulp-containing liquid onto the papermaking belt, and a flow of the pulp-containing liquid supplied from the supply body onto the papermaking belt in the belt width direction A pair of width regulating members that regulate in
Side leakage preventing means for preventing the pulp-containing liquid between the width regulating members from leaking from the width regulating member and the papermaking belt to the outside between the width regulating members is provided ,
The side leakage prevention means comprises a pair of side leakage prevention members provided below both width regulating members,
The side leakage preventing member is disposed so that its length direction is the same as the belt length direction,
The papermaking belt is sandwiched between a width regulating member and a side leakage preventing member that face each other in the vertical direction, and rotates .

According to this, the flow of the pulp-containing liquid supplied on the papermaking belt rotating from the supply body is regulated to a predetermined width by the pair of width regulating members in the belt width direction. At this time, since the papermaking belt rotates while being sandwiched between the width regulating member and the side leakage preventing member, it is possible to prevent the papermaking belt from wavy in the vertical direction, and between the width regulating member and the papermaking belt. It is possible to prevent a gap from being formed on the surface. This prevents the pulp-containing liquid between the width regulating members from leaking from between the width regulating member and the papermaking belt to the outside between the width regulating members , and the width of the wet paper to be produced is the specified width. And the thickness becomes uniform.

In the papermaking apparatus according to the second aspect of the present invention, the papermaking belt has protruding portions that protrude outward from the width regulating member on both sides,
The side leakage prevention means lifts the protruding portion of the papermaking belt upward.

  According to this, the protruding portion of the papermaking belt is lifted upward by the side leakage preventing means, so that the pulp-containing liquid between the width regulating members moves from between the width regulating member and the papermaking belt to the outside between the width regulating members. Even if it is about to leak, the raised protruding portion functions to return the pulp-containing liquid to the inside of the width regulating member (that is, between both width regulating members). Thereby, it is prevented that the pulp containing liquid between both width control members leaks to the outer side between both width control members from between a width control member and a papermaking belt.

In the paper making apparatus according to the third aspect of the invention, the side leakage prevention means is a lifting member that lifts the protruding portion of the paper making belt upward.
According to this, since the protruding portion of the papermaking belt is lifted upward by the lifting member, the pulp-containing liquid between both width regulating members leaks from between the width regulating member and the papermaking belt to the outside between both width regulating members. Doing so is prevented.

The papermaking apparatus according to the fourth invention is a papermaking apparatus for producing wet paper by dehydrating a pulp-containing liquid,
A papermaking belt that can rotate on an endless track and has water permeability, a supply body that supplies the pulp-containing liquid onto the papermaking belt, and a flow of the pulp-containing liquid supplied from the supply body onto the papermaking belt in the belt width direction A pair of width regulating members that regulate in
The papermaking belt is wound around a plurality of rollers, and has protruding portions that protrude outward from the width regulating member on both sides.
Side leakage preventing means for preventing the pulp-containing liquid between the width regulating members from leaking from the width regulating member and the papermaking belt to the outside between the width regulating members is provided,
Any one of the rollers is arranged below the width regulating member,
The specific roller has a holding portion formed at both ends in the belt width direction and lifting the protruding portion of the papermaking belt upward, and a roller main body portion formed between both holding portions,
The diameter of the upper part is larger than the diameter of the roller body,
The side leakage prevention means comprises a specific roller holding portion .

  According to this, since the papermaking belt is rotated by the rotation of the roller and the protruding portion of the papermaking belt is lifted upward by the holding portion of the specific roller, the pulp-containing liquid between the width regulating members is separated from the width regulating member and the papermaking belt. Leakage from between the two and the width regulating members is prevented.

This 5th invention is a used paper processing apparatus provided with the papermaking apparatus of any one of the said 1st invention to the 4th invention,
The used paper pulp manufacturing apparatus that disaggregates used paper to produce a pulp-containing liquid, and the deinking apparatus that deinks the pulp-containing liquid obtained by the used paper pulp manufacturing apparatus. Is used to produce wet paper.

  As described above, according to the present invention, the pulp-containing liquid between both width regulating members is prevented from leaking from between the width regulating member and the papermaking belt to the outside between the both width regulating members. The thickness of the wet paper becomes the specified width and the thickness becomes uniform.

It is a schematic diagram which shows the internal structure of the used paper processing apparatus in the 1st Embodiment of this invention. It is a side view which shows the structure of the paper making apparatus with which the used paper processing apparatus was equipped. It is a top view of a papermaking apparatus. FIG. 2 is a perspective view of the vicinity of the head box of the paper making apparatus. It is sectional drawing of the head box vicinity of a papermaking apparatus. It is a XX arrow line view in FIG. It is a perspective view of the lifting member provided in the papermaking apparatus. FIG. 3 is a side view of the papermaking belt with the protruding portion lifted by the lifting member of the papermaking apparatus. It is a front view of the vicinity of the head box of the paper making apparatus in the second embodiment of the present invention. It is a perspective view near the head box of the conventional papermaking apparatus. FIG. 3 is an enlarged side view of a width regulating plate and an endless belt of the paper making apparatus. It is sectional drawing of the slidable contact part of the lower end part of the width control board of a papermaking apparatus, and an endless belt.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a schematic diagram showing the configuration of the used paper processing apparatus 1. The used paper processing apparatus 1 manufactures the recycled paper 3 from the used used paper 2. The used paper pulp is used to produce the pulp-containing liquid 5 by disaggregating the used paper 2 shredded by a paper shredding machine 4 such as a shredder. A manufacturing apparatus 6 (pulper), a used paper supply apparatus 7 for supplying the shredded used paper 2 to the used paper pulp manufacturing apparatus 6, and a storage tank 8 for storing the pulp-containing liquid 5 obtained by the used paper pulp manufacturing apparatus 6. A deinking device 9 for separating and removing printing components such as toner from the pulp-containing liquid 5 stored in the storage tank 8, and a wet paper 10 for dehydrating the pulp-containing liquid 5 deinked in the deinking device 9. Paper making apparatus 11, wet paper dewatering apparatus 12 for dewatering wet paper 10, wet paper drying apparatus 13 for drying dehydrated wet paper 10 to make recycled paper 3, and finishing process for recycled paper 3 The finishing machine 14 and the papermaking machine 11 And a white water tank 16 or the like for storing the white water to be.

  As shown in FIGS. 2 and 3, the paper making apparatus 11 includes a plurality of rotatable first to third rollers 18 to 20 and an endless track wound around the first to third rollers 18 to 20. 21 is a rotatable papermaking belt 22, a head box 23 (an example of a supply body) that supplies the pulp-containing liquid 5 sent from the deinking device 9 onto the papermaking belt 22, and the headbox 23 to the papermaking belt 22. A pair of width regulating plates 24 (an example of a width regulating member) that regulates the flow of the pulp-containing liquid 5 supplied above in the belt width direction W and a pair of side frames 25 are provided.

  The first to third rollers 18 to 20 are provided between the side frames 25, and among these, the second roller 19 is a driving roller that is rotationally driven by a motor (not shown), and the first and third rollers 18 and 20. Has a driven roller. The papermaking belt 22 is a mesh-like wire belt composed of a large number of wires and has water permeability.

  The endless track 21 is formed in a triangular shape in a side view, and a paper track 22 dewaters while transporting the pulp-containing liquid 5 supplied from the head box 23 from the upstream end to the downstream side; The papermaking belt 22 has a return track 27 that returns from the downstream end of the transport track 26 to the upstream end. Note that the return track portion 27 is located below the transport track portion 26.

  As shown in FIGS. 3 to 5, the head box 23 is provided on the side frame 25, and has a square box-like head box body 30 that stores the pulp-containing liquid 5, and a pulp-containing liquid in the head box body 30. 5, a supply port 31 for supplying 5 onto the papermaking belt 22, a guide plate 32 for smoothly guiding the pulp-containing liquid 5 flowing out from the supply port 31 to the upper surface of the papermaking belt 22, and the width regulating plate 24. .

The interior of the head box body 30 is partitioned into first and second storage portions 36 and 37 by a partition plate 35, and the first storage portion 36 and the second storage portion 37 communicate with each other at the lower portion.
In addition, the supply port 31 opens at the upper part of the second reservoir 37. Furthermore, the 1st stirring member 38 which stirs the pulp containing liquid 5 of the 1st storage part 36 is provided in the lower part of the 1st storage part 36 by moving up and down. Similarly, a second stirring member 39 that stirs the pulp-containing liquid 5 in the second storage unit 37 by moving up and down is provided below the second storage unit 37. A driving device (not shown) for moving the first and second stirring members 38 and 39 up and down is provided in the head box 23.

  The guide plate 32 is provided on the head box body 30 and overlaps the upper surface of the papermaking belt 22 at the upstream end of the transport track 26. Both width restricting plates 24 are provided on both sides of the head box body 30 and project from the upstream side to the downstream side of the transport track 26, and a guide plate 32 is provided between the both width restricting plates 24. Further, the lower end portions of both width regulating plates 24 are in sliding contact with the upper surface (surface) of the papermaking belt 22, and the downstream end 24 a of both width regulating plates 24 is conveyed more than the downstream end 32 a of the guide plate 32. It extends to the downstream side of the track portion 26.

The papermaking belt 22 has protruding portions 22 a that protrude outward from the width regulating plate 24 on both sides.
As shown in FIGS. 3 to 6, a pair of side leakage prevention plates 42 (an example of a side leakage prevention member) is provided below both width regulating plates 24. The side leakage prevention plate 42 is disposed so that the length direction thereof is the same as the belt length direction L, and is provided on the side frame 25. The upper end of the side leakage prevention plate 42 is in sliding contact with the lower surface (back surface) of the papermaking belt 22. Further, the downstream end portions 42 a of the both side leakage preventing plates 42 extend further to the downstream side of the conveyance track portion 26 than the downstream end portions 24 a of the both width regulating plates 24. The papermaking belt 22 is sandwiched between the width regulating plate 24 and the side leakage prevention plate 42 facing each other in the vertical direction and rotates.

  As shown in FIGS. 3, 4, and 6, the side frame 25 is provided with a plurality of lifting members 44 that lift the left and right protruding portions 22 a of the papermaking belt 22 upward. These lifting members 44 are arranged on the outer side of the width regulating plate 24 at a predetermined interval along the transport track portion 26. As shown in FIGS. 7 and 8, the lifting member 44 is an L-shaped member having a mounting portion 44a attached to the side frame 25 and a lifting portion 44b that protrudes downward from the outside of the protruding portion 22a. . The holding portion 44b includes a flat plate portion 44c and a plurality of inclined portions 44d provided on both front and rear side ends and the front end side of the flat plate portion 44c.

  As shown in FIG. 6, the side leakage prevention plate 42 and the lifting member 44 are respectively located between the lower end portion of the width regulating plate 24 and the upper surface of the papermaking belt 22. It is a side leakage prevention means which prevents that it leaks to the outer side between the both width control boards 24 (namely, the outer side of the width control board 24).

Hereinafter, the operation of the above configuration will be described.
As shown in FIG. 1, when the used paper 2 is put into the used paper processing apparatus 1, the used paper 2 is shredded by a paper cutting machine 4 and then supplied to a used paper pulp manufacturing apparatus 6 by a used paper supply apparatus 7. It is disaggregated in the pulp manufacturing apparatus 6, and the pulp-containing liquid 5 is manufactured from the waste paper 2. The pulp-containing liquid 5 is sent from the used paper pulp manufacturing apparatus 6 to the storage tank 8 and stored, and then sent from the storage tank 8 to the deinking apparatus 9. And in the deinking apparatus 9, while adding a deinking agent to the pulp containing liquid 5, by supplying many bubbles in the pulp containing liquid 5 by aeration, the printing component in the pulp containing liquid 5 is isolate | separated. To remove. The pulp-containing liquid 5 deinked in this way is supplied from the deinking device 9 into the head box body 30 of the paper making device 11.

  At this time, as shown in FIG. 5, since the pulp-containing liquid 5 after deinking first flows into the first reservoir 36 in the head box body 30, the pulp-containing liquid 5 is entrained from the deinking device 9 to the pulp-containing liquid 5. Most of the bubbles 46 that have flowed into the first reservoir 36 are prevented from flowing into the second reservoir 37 by the partition plate 35, and are collected and retained in the first reservoir 36. Thereby, the quantity of the bubble 46 which flows out from the 2nd storage part 37 through the supply port 31 to the papermaking belt 22 is reduced significantly, and the quality of the wet paper 10 improves.

In addition, by rotating the second roller 19 among the first to third rollers 18 to 20 of the paper making apparatus 11 with a motor, the paper making belt 22 rotates at a predetermined traveling speed.
Then, the pulp-containing liquid 5 in the head box body 30 gradually increases, and eventually overflows from the supply port 31 and is supplied from the top of the guide plate 32 to the upper surface of the papermaking belt 22 while flowing between the both width regulating plates 24. . As a result, the pulp-containing liquid 5 is filtered and dehydrated while being transported by the papermaking belt 22 that travels on the transport track 26, and becomes the wet paper 10 that forms a fiber layer.

  At this time, as shown in FIGS. 5 and 6, the flow of the pulp-containing liquid 5 supplied to the upper surface of the papermaking belt 22 is regulated to a predetermined width in the belt width direction W by the both width regulating plates 24. At this time, since the papermaking belt 22 is sandwiched between the width regulating plate 24 and the side leakage prevention plate 42 and rotates the conveyance track portion 26, the papermaking belt 22 is moved in the vertical direction (thickness direction of the papermaking belt 22). Rippling (bending) can be prevented.

  Accordingly, it is possible to prevent the lower end portion of the width regulating plate 24 from being in sliding contact with the upper surface of the papermaking belt 22 and to prevent a gap from being formed between the lower end portion of the width regulating plate 24 and the upper surface of the papermaking belt 22. Therefore, it is possible to prevent the pulp-containing liquid 5 between the width regulating plates 24 from leaking from between the lower end of the width regulating plate 24 and the upper surface of the papermaking belt 22 to the outside between the width regulating plates 24.

  Also, as shown in FIGS. 4, 6, and 8, the protruding portion 22 a of the papermaking belt 22 is lifted upward by the lifting member 44, so that the pulp-containing liquid 5 between the width regulating plates 24 is transferred to the width regulating plate 24. Even if an attempt is made to leak from between the lower end portion of the paper and the upper surface of the papermaking belt 22 to the outer side between the width regulating plates 24, the raised protruding portion 22a causes the pulp-containing liquid 5 to flow inside the width regulating plate 24 (that is, both It works to return to the width regulating plate 24). Thereby, it is more reliably that the pulp-containing liquid 5 between the two width regulating plates 24 leaks outward from between the lower end portion of the width regulating plate 24 and the upper surface of the papermaking belt 22 to the outer side between the two width regulating plates 24. Can be prevented.

  In particular, when the papermaking belt 22 is a mesh-like wire belt composed of a plurality of wires, minute irregularities are generated on the surface of the papermaking belt 22, and the gap between the lower end of the width regulating plate 24 and the wire of the papermaking belt 22 is formed. Although a minute gap is generated, the pulp-containing liquid 5 between the width regulating plates 24 is lifted between the lower end portion of the width regulating plate 24 and the paper making belt 22 by lifting the protruding portion 22a of the paper making belt 22 upward as described above. Leakage from the upper surface through the minute gap to the outside between the two width regulating plates 24 is prevented.

  Thereby, the width of the manufactured wet paper 10 becomes a specified width and the thickness becomes uniform. The protruding portion 22a of the papermaking belt 22 is lifted by about 3 mm by the lifting member 44, but the lifting amount is not limited to 3 mm.

  Further, as shown in FIG. 5, the pulp-containing liquid 5 in the first and second reservoirs 36 and 37 is stirred by alternately moving the first stirring member 38 and the second stirring member 39 up and down. A wave having a predetermined period and height (amplitude) can be generated in the pulp-containing liquid 5 supplied onto the papermaking belt 22 from the supply port 31. Thereby, it is possible to flow the pulp-containing liquid 5 so as to overlap the papermaking belt 22, and the fibers in the pulp-containing liquid 5 can be made uniform.

  As shown in FIG. 1, the wet paper 10 manufactured in the paper making apparatus 11 as described above is transferred from the downstream end of the paper making belt 22 to the water absorbing belt 49 of the wet paper dehydrating apparatus 12, and the wet paper dehydrating apparatus 12. Then, the water is absorbed and dehydrated, and then transferred from the wet paper web dehydrating device 12 to the wet paper web drying device 13, heated and dried in the wet paper web drying device 13, and becomes the recycled paper 3 before finishing. Thereafter, the recycled paper 3 is transferred from the wet paper drying device 13 to the finishing device 14, finished by being cut into a predetermined size, and sent out from the used paper processing device 1.

In the first embodiment, as shown in FIG. 3, two lifting members 44 are provided on the outer side of the width regulating plate 24 on one side, but one on each side, or three or more on each side. It may be provided.
In the first embodiment, the lifting member 44 is disposed only in a limited range on the outer side of the width regulating plate 24. However, the number of the lifting members 44 is increased so that the outside of the width regulating plate 24 is increased. The lifting members 44 may be arranged at predetermined intervals over a wide range (that is, a range between the first roller 18 and the second roller 19) from one side to the downstream end of the papermaking belt 22.

(Second Embodiment)
In the second embodiment, a lifting member 44 is provided in the same manner as in the first embodiment. Further, as shown in FIG. 9, the first roller 18 (an example of a specific roller) is A holding portion 18a (an example of a lateral leakage prevention means) that is disposed below the width regulating plate 24 and is formed at both ends in the belt width direction W and lifts the protruding portion 22a of the papermaking belt 22 upward; And a roller main body portion 18b formed between the upper portions 18a. In addition, the diameter of the holding | maintenance part 18a is set larger than the diameter of the roller main-body part 18b.

Hereinafter, the operation of the above configuration will be described.
Since the protruding portion 22 a of the papermaking belt 22 is lifted upward by the lifting member 44 (not shown) and the lifting portion 18 a of the first roller 18, the pulp-containing liquid 5 between the width regulating plates 24 is removed from the width regulating plate 24. Even if an attempt is made to leak from between the lower end portion and the upper surface of the papermaking belt 22 to the outer side between the width regulating plates 24, the raised protruding portion 22a causes the pulp-containing liquid 5 to flow inside the width regulating plate 24 (that is, both widths). It works to return to between the control plates 24). Thereby, it is more reliably that the pulp-containing liquid 5 between the two width regulating plates 24 leaks outward from between the lower end portion of the width regulating plate 24 and the upper surface of the papermaking belt 22 to the outer side between the two width regulating plates 24. Can be prevented.

  In the second embodiment, since the protruding portion 22a of the papermaking belt 22 is lifted using a part of the first roller 18, the holding roller installed between the first roller 18 and the second roller 19 is used. The number of upper members 44 can be reduced.

  Further, in the second embodiment, only the first roller 18 has the holding portion 18a and the roller main body portion 18b, but both the first roller 18 and the second roller 19 are the holding portion and the roller, respectively. The structure which has a main-body part may be sufficient. According to this, since the protruding portion 22a of the papermaking belt 22 is lifted by the upper portions of the rollers 18 and 19, the number of lifting members 44 installed between the rollers 18 and 19 can be further reduced. Further, the lifting member 44 may be omitted.

  In the first and second embodiments, as shown by phantom lines in FIG. 5, a plurality of draining plates 52 for draining water from the lower surface of the papermaking belt 22 that rotates on the transport track 26 are provided. It may be provided. According to this, the papermaking belt 22 is supported from below by the draining plate 52, and the white water that has passed through the papermaking belt 22 is forcibly removed from the lower surface of the papermaking belt 22 by the draining plate 52, so that the dewatering efficiency is improved. .

DESCRIPTION OF SYMBOLS 1 Waste paper processing apparatus 2 Waste paper 5 Pulp containing liquid 6 Waste paper pulp manufacturing apparatus 9 Deinking apparatus 10 Wet paper 11 Paper making apparatus 18 1st roller (specific roller)
18a Lifting part (side leakage prevention means)
18b Roller body 19 Second roller 20 Third roller 22 Papermaking belt 22a Overhang portion 23 Head box (supply body)
24 Width regulating plate (width regulating member)
42 Side leakage prevention plate (side leakage prevention member, side leakage prevention means)
44 Lifting member (side leakage prevention means)
L Belt length direction W Belt width direction

Claims (5)

A paper making apparatus for producing wet paper by dehydrating a pulp-containing liquid,
A papermaking belt that can rotate on an endless track and has water permeability, a supply body that supplies the pulp-containing liquid onto the papermaking belt, and a flow of the pulp-containing liquid supplied from the supply body onto the papermaking belt in the belt width direction A pair of width regulating members that regulate in
Side leakage preventing means for preventing the pulp-containing liquid between the width regulating members from leaking from the width regulating member and the papermaking belt to the outside between the width regulating members is provided ,
The side leakage prevention means comprises a pair of side leakage prevention members provided below both width regulating members,
The side leakage preventing member is disposed so that its length direction is the same as the belt length direction,
The papermaking belt is sandwiched between a width regulating member and a side leakage prevention member facing each other in the vertical direction and rotates . The papermaking belt has a protruding portion that protrudes outward from the width regulating member on both sides,
2. The paper making apparatus according to claim 1, wherein the side leakage preventing means lifts the protruding portion of the paper making belt upward . 3. The papermaking apparatus according to claim 2, wherein the side leakage preventing means comprises a lifting member that lifts the protruding portion of the papermaking belt upward . A paper making apparatus for producing wet paper by dehydrating a pulp-containing liquid,
A papermaking belt that can rotate on an endless track and has water permeability, a supply body that supplies the pulp-containing liquid onto the papermaking belt, and a flow of the pulp-containing liquid supplied from the supply body onto the papermaking belt in the belt width direction A pair of width regulating members that regulate in
The papermaking belt is wound around a plurality of rollers, and has protruding portions that protrude outward from the width regulating member on both sides.
Side leakage preventing means for preventing the pulp-containing liquid between the width regulating members from leaking from the width regulating member and the papermaking belt to the outside between the width regulating members is provided,
Any one of the rollers is arranged below the width regulating member,
The specific roller has a holding portion formed at both ends in the belt width direction and lifting the protruding portion of the papermaking belt upward, and a roller main body portion formed between both holding portions,
The diameter of the upper part is larger than the diameter of the roller body,
The paper making apparatus characterized in that the side leakage prevention means comprises a holding portion of a specific roller . A used paper processing apparatus comprising the papermaking apparatus according to any one of claims 1 to 4,
The used paper pulp manufacturing apparatus that disaggregates used paper to produce a pulp-containing liquid, and the deinking apparatus that deinks the pulp-containing liquid obtained by the used paper pulp manufacturing apparatus. Waste paper processing equipment characterized in that wet paper is produced by dehydrating the paper.

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