JP5750627B2 - Head box, paper making apparatus and paper making apparatus - Google Patents

Description

  The present invention relates to a head box, a paper making apparatus, and a paper making apparatus.

Regarding a head box for supplying a pulp suspension as a papermaking raw material to a papermaking wire, Patent Literature 1 below discloses a diffusion bar for diffusing fibers in the pulp suspension stored in the headbox body in the width direction. A technique comprising:

In addition, Patent Documents 2 and 3 below include a technique for providing a stirrer in a slurry supply unit that supplies slurry to a forming unit for an apparatus for manufacturing a building board or the like using slurry as a raw material, so that the slurry can be stirred by the stirrer. It is disclosed.

Japanese Patent Laid-Open No. 9-49183 Japanese Patent Laid-Open No. 7-256623 Japanese Patent No. 4168120

In the head box described in Patent Document 1, a bar material in which peaks and valleys are repeated in the axial direction is used for the diffusion bar, but the diffusion of the fibers in the width direction is sufficiently efficient due to the structure of the diffusion bar. It cannot be said that it has been made, and further improvement is necessary.

Moreover, when the stirring body provided in the slurry supply part in the board manufacturing apparatus described in Patent Documents 2 and 3 is provided in the head box of the papermaking apparatus, it is obtained because bubbles are generated in the pulp suspension. Damage the formation of paper.

SUMMARY OF THE INVENTION The present invention solves the above-described problems, and can efficiently stir the pulp suspension in the head box, and can improve the formation of the resulting paper, and a paper machine equipped with the head box And to provide a papermaking apparatus.

In order to achieve the above object, a headbox according to claim 1 is provided with an inflow part for allowing a pulp suspension, which is a papermaking raw material, to flow into a storage part, and a pulp suspension that flows into the storage part and is stored in the storage part. A side plate that forms a part of the reservoir along the width direction substantially perpendicular to the supply direction for supplying the pulp suspension in the reservoir to the papermaking wire that travels. In the head box that overflows the pulp suspension from above the side plate and supplies it to the papermaking wire, the stirring means includes a flat plate member installed along the width direction, and the flat plate member. and a moving means for reciprocating back and forth with respect to the vertical or the feed direction, the flat plate-like member in the width direction both end portions in the vicinity of the reservoir is made of is formed thinner than other portions.

Further, the invention according to claim 2 is an inflow part for allowing a pulp suspension, which is a papermaking raw material, to flow into a storage part, and an agitation means for stirring the pulp suspension that is introduced from the inflow part and stored in the storage part. A side plate that forms a part of the storage unit is installed along the width direction substantially orthogonal to the supply direction for supplying the pulp suspension in the storage unit on the papermaking wire, from above the side plate, In the head box which overflows the pulp suspension and supplies the paper suspension to the papermaking wire, the stirring means includes a flat plate member installed along the width direction and the flat plate member up and down or back and forth with respect to the supply direction. And moving means for generating waves on the liquid surface of the pulp suspension supplied on the papermaking wire, and the storage section is partitioned into a plurality of chambers by partition walls, and each of the plurality of chambers Installed flat plate Wood is formed by adjusting to move out of phase.

According to a third aspect of the present invention, in the head box according to the first or second aspect of the present invention, the flat plate-like member is disposed horizontally so that the flat plate surface is in a substantially horizontal posture, and the moving means is configured such that the flat plate surface is The flat plate member is reciprocated up and down while maintaining a substantially horizontal posture.

According to a fourth aspect of the present invention, in the headbox according to any one of the first to third aspects, the storage portion is a partition wall disposed at a hollow height position along the width direction. Is divided forward and backward with respect to the supply direction .

Further, the invention according to claim 5 is a paper making apparatus comprising at least the head box according to any one of claims 1 to 4 and a paper making wire device provided with a paper making wire.

Furthermore, the invention described in claim 6 is a paper making apparatus provided with at least the paper making apparatus described in claim 5.

According to the head box of claim 1, the stirring means includes a flat plate-like member installed along the width direction, and a moving means for reciprocating the flat plate member up and down or back and forth in the supply direction. Since it comprises, the pulp suspension in a storage part can be stirred very efficiently. And since the plate-shaped member is formed in the vicinity of both ends in the width direction of the storage portion thinner than the other portions, the pulp suspension is difficult to spread sufficiently, the width direction of the storage portion where the flow rate tends to decrease A large amount of pulp suspension can be circulated in the vicinity of both ends, and the concentration of waste paper pulp in the pulp suspension supplied onto the papermaking wire can be made uniform in the width direction.

According to the second aspect of the present invention, the storage section is partitioned into a plurality of chambers by the partition wall, and the flat members respectively installed in the plurality of chambers are adjusted so as to move with shifted phases. Therefore, the pulp suspension can be efficiently stirred.

According to the third aspect of the present invention, the flat plate member is installed horizontally so that the flat plate surface has a substantially horizontal posture, and the moving means moves the flat plate member up and down while maintaining the flat plate surface in a substantially horizontal posture. Therefore, when the pulp suspension is supplied to the papermaking wire, it is easy to generate waves on the liquid surface and periodically increase the liquid volume. By the generation of this wave, the waste paper pulp that has become agglomerated in the middle of the supply path can be dispersed, and the quality of the recycled paper obtained can be improved.

Furthermore, according to invention of Claim 4, since the storage part is divided forward and backward with respect to the said supply direction by the partition wall arrange | positioned in the hollow height position along the width direction, pulp suspension Bubbles mixed in the liquid and flowing from the inflow part to the storage part can be lifted and eliminated in the compartment upstream of the supply direction to the papermaking wire, and the bubbles from the pulp suspension supplied on the papermaking wire The quality of the recycled paper obtained by removing can be improved.

  Furthermore, according to invention of Claim 5, it is a papermaking apparatus provided with the headbox as described in any one of Claim 1 thru | or 4, and the papermaking wire apparatus provided with a papermaking wire. Therefore, the pulp suspension supplied from the head box to the papermaking wire can be made uniform with little unevenness of the wastepaper pulp concentration, and the quality of paper obtained by papermaking can be improved.

Furthermore, according to the invention described in claim 6, since the papermaking apparatus includes at least the papermaking apparatus described in claim 5, it is possible to manufacture paper of good quality with improved formation.

1 is a schematic configuration diagram of a paper making apparatus according to an embodiment of the present invention. It is a perspective view of the head box and wire part of the papermaking apparatus. It is a rear view of the head box. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. FIG. 4 is a cross-sectional view taken along line B-B in FIG. 3. It is CC sectional view taken on the line of FIG. It is DD sectional view taken on the line of FIG. It is the schematic of the press part of the said papermaking apparatus, a drying part, and a finishing part. It is a use mode figure of a head box and a wire part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a used paper recycling apparatus according to the present invention. In FIG. 1, a used paper recycling processing apparatus 100 includes a used paper pulp manufacturing unit 1, a deinking pulp unit 2, a paper making unit 3, a finishing unit 4, and a control unit 8 for controlling each unit in a casing (not shown).

The used paper pulp manufacturing unit 1 separates the used paper 6 to produce a pulp suspension, and the deinking pulp unit 2 deinks the pulp suspension produced in the used paper pulp manufacturing unit 1. Yes, the paper making unit 3 makes the paper suspension of the deinked pulp suspension obtained in the deinking pulp unit 2, and the finishing part 4 is a recycled paper 7 that has been made in the paper making unit 3 before finishing. The recycled paper 7 is obtained by finishing by cutting or the like. The control unit 8 controls the operation of the used paper recycling processing apparatus 100 as a whole. The used paper pulp manufacturing unit 1 and the deinking pulp unit 2 can use a known used paper pulp manufacturing device and a deinking device, respectively.

The paper making unit 3 is configured by a paper making apparatus S including the head box 11 and the wire unit 12 shown in FIG. 2 and the press unit 13 and the drying unit 14 shown in FIG. The head box 11 is for uniformly supplying the pulp suspension after deinking onto the paper making wire 71.

3 is a rear view of the head box 11, FIG. 4 is a sectional view taken along line AA in FIG. 3, FIG. 5 is a sectional view taken along line BB in FIG. 3, and FIG. FIG. 7 is a sectional view taken along line D-D in FIG. As shown in FIG. 3, the head box 11 includes a head box main body 21 that receives and stores a pulp suspension. The head box body 21 is accommodated in a frame 27 having an upper frame body 23, a lower frame body 24, a left frame body 25, and a right frame body 26, and a middle stage between the left frame body 25 and the right frame body 26. It is being fixed on the support stand 28 erected.

As shown in FIGS. 3 to 6, the head box body 21 is integrally formed by a bottom plate 31 and a front side plate 32, a rear side plate 33, a left side plate 34 and a right side plate 35 erected on the outer peripheral edge of the bottom plate 31. The upper part of the head box body 21 is open. A storage portion 36 for storing a pulp suspension is formed inside the head box body 21.

As shown in FIGS. 2 and 4, the left side plate 34 and the right side plate 35 have width guides 38 each having a front upper portion extending a predetermined length along the upper surface of the paper making wire 71 constituting the wire portion 12. 39 is provided. The width guides 38 and 39 prevent the pulp suspension supplied on the papermaking wire 71 from flowing out to the left and right, and define the width W length of the wet paper 9 obtained by papermaking. The front end portions of the width guides 38 and 39 are connected by a connecting member 40 at a height position that does not contact the wet paper web 9.

A guide plate 42 is installed between the left and right width guides 38 and 39 along the upper surface of the papermaking wire 71. Both left and right edges of the guide plate 42 are chlorinated below the width guides 38 and 39. It is fixed with a vinyl adhesive or the like. The rear end edge of the guide plate 42 is similarly fixed to the upper end edge of the front side plate 32.

The front side plate 32 is a side plate that forms a part of the storage unit 36 as described above. As shown in FIG. 2, when the pulp suspension stored in the storage unit 36 is supplied onto the traveling papermaking wire 71. Is installed along the width direction W substantially perpendicular to the supply direction F of the. As shown in FIG. 6, the front side plate 32 is formed so that the height from the bottom plate 31 is lower than the rear side plate 33 by a predetermined amount, and the pulp suspension stored in the storage part 36 is transferred from above the upper end edge of the front side plate 32. It is designed to overflow to the front. The pulp suspension overflowing from the front side plate 32 flows without leaking on the guide plate 42 while being regulated in the width direction W by the width guides 38 and 39 and is supplied onto the papermaking wire 71. Yes.

As shown in FIGS. 6 and 7, the storage section 36 is partitioned by a partition wall 44 into a rear first chamber 46 and a front second chamber 47 in the front-rear direction. The partition wall 44 is installed at the hollow height position of the storage portion 36, and the left and right edges of the partition wall 44 are supported by the left side plate 34 and the right side plate 35, respectively. Are communicating.

The bottom plate 31 is a rear side position constituting the first chamber 46 shown in FIG. 6 and an inflow part 50 for allowing the pulp suspension to flow into the storage part 36 at the center in the width direction W shown in FIG. Is formed to be open. A pipe 51 made of synthetic resin is connected to the inflow portion 50 so that the pulp suspension sent from the deinking pulp portion 2 which is the previous step is sent to the storage portion 36.

The first chamber 46 and the second chamber 47 are each provided with a stirring means 55 that stirs the pulp suspension that flows in from the inflow portion 50 and is stored in the storage portion 36. The stirring means 55 includes a flat plate member 53 installed along the width direction W, and a moving unit 54 that reciprocates the flat plate member 53 up and down.

As shown in FIG. 6, the flat plate member 53 is provided horizontally so that the flat plate surface is in a substantially horizontal posture, and is provided over substantially the entire range in the width direction W as shown in FIG. 5. The flat member 53 is formed such that portions near both ends in the width direction W of the plan view storage portion 36 are formed slightly narrower than the other portions, and further, the flat member 53 a installed in the first chamber 46. In addition to the vicinity of both end portions in the width direction W in plan view, the substantially central portion in the width direction W which is the upper position of the inflow portion 50 is formed to be slightly narrow.

The ratio of the area of the flat surface of each flat plate member 53 to the area of the bottom surface of each of the first chamber 46 and the second chamber 47 of the storage portion 36 shown in FIG. 5 is about 40% to 70%, preferably 50%. About -65% is preferable in that the pulp suspension can be efficiently stirred and the pulp suspension can be circulated smoothly.

The moving means 54 is configured such that the flat plate member 53 moves while maintaining a substantially horizontal posture. By moving the flat plate member 53 back and forth by the moving means 54, the liquid level of the pulp suspension stored in the first chamber 46 and the second chamber 47 is moved up and down, and thereby supplied onto the papermaking wire 71. Waves are generated on the surface of the pulp suspension. The moving means 54 includes an arm 58, a link member 59, a rotating body 60, a crankshaft 61, a driving gear 62, a driven gear 63, and a driving unit (not shown).

A pair of left and right arms 58 are provided. As shown in FIG. 3, left and right ends of the flat plate member 53 are connected to the lower ends of the arms 58. As shown in FIG. 6, the upper portion of the arm 58 is pin-joined to the lower end portion of the link member 59, and the upper end portion of the link member 59 is pin-joined to the eccentric position of the rotating body 60. The rotating body 60 is joined in the vicinity of the right end portion of the crankshaft 61 shown in FIG. 4, and the rotating body 60 rotates with the rotation of the crankshaft 61. Thus, the flat plate member 53 is reciprocated up and down.

The crankshaft 61 is driven by the rotation of the driven gear 63 shown in FIG. The driven gear 63 is in mesh with a drive gear 62 installed between the pair of driven gears 63, and the drive gear 62 is joined to one end of the drive shaft 64. As shown in FIG. 3, the drive shaft 64 is pivotally supported on the right side surface screwed into the upper portion of the right frame body 26 of the upper frame body 23, and the other end portion of the drive shaft 64 is It extends outward from the right frame 26 and is connected to a drive unit such as a motor (not shown). Thus, when the drive unit is driven, the drive shaft 64 is rotated, and the drive gear 62 is rotated, whereby the pair of driven gears 63 are rotated in opposite directions, and the crankshaft 61 is rotated.

  As shown in FIG. 6, the rotating body 60a installed above the first chamber 46 and the rotating body 60b installed above the second chamber 47 have eccentric positions r1 and r2 at which the link member 59 is pin-joined. The phase is shifted by 180 °. Accordingly, the flat plate members 53a and 53b of the first chamber 46 and the second chamber 47 are adjusted so as to move up and down with a phase shifted by 180 ° from each other. When in the lower position, the flat plate member 53 of the second chamber 47 is in the uppermost position. In addition, the length of the arm 58 is slightly shorter in the second chamber 47 than in the first chamber 46 so that the pulp suspension flowing into the second chamber 47 can be easily guided to the papermaking wire 71. . And the length by which the flat member 53 moves up and down by the moving means 54 depends on the size of the head box body 21, but can be about 3 mm to 10 mm, for example.

As shown in FIG. 2, the wire portion 12 is constituted by a papermaking wire device H provided with an endless papermaking wire 71 that is stretched over a plurality of rollers 70. Inside the papermaking wire 71, vertical plates 74 slidably contacting the lower surface of the traveling papermaking wire 71 are installed along the width direction W, and a plurality of parallel plates are arranged along the running direction of the papermaking wire 71. The white water flowing down from the 71 mesh is guided downward. A water receiving portion 72 is provided below the vertical plate 74 to receive white water flowing directly from the vertical plate 74 or from the mesh of the papermaking wire 71. The water receiving unit 72 is connected to a white water tank (not shown). The white water tank includes a pipe and a pump (not shown) for sending white water contained therein to the waste paper pulp manufacturing unit 1 and the deinking pulp unit 2. The white water collected at the site is reusable.

The traveling speed of the papermaking wire 71 may be relatively low, for example, 5 mm / s to 100 mm / s, preferably about 15 mm / s to 50 mm / s.

As shown in FIG. 7, the press unit 13 has a pair of upper and lower endless water-absorbing belts 78 each made of felt that is stretched between a plurality of rotating rollers 77, and includes an upper water-absorbing belt 78a and a lower water-absorbing belt. 78b is in partial contact. A plurality of a pair of squeezing rollers 79 that squeeze and squeeze both of the water absorbing belts 78 are provided at a portion where the upper water absorbing belt 78a and the lower water absorbing belt 78b are partially in contact.

The drying unit 14 includes a plurality of rotating rollers 82 and a drying roller 83 arranged in a hood (not shown), and a pair of upper and lower drying belts 84 spanned between the plurality of rotating rollers 82 and the drying roller 83. I have. The material of the drying belt 84 is not particularly limited. For example, the drying belt 84 is made of cloth, heat-resistant resin, metal, or the like, and the upper and lower drying belts 84 are in contact with each other. A plurality of drying rollers 83 are arranged at the locations. The drying roller 83 includes a heater 85 therein, and a drying belt 84 is wound around an outer peripheral surface thereof. The drying roller 83 includes a temperature sensor (not shown) that measures the temperature of the surface of the drying roller 83. Yes.

(Finish)
As shown in FIG. 1, the finishing unit 4 includes a plurality of press rollers 87 for increasing the flatness of the paper, and a cutting blade (not shown) for cutting the paper into a predetermined sheet size.

(Function)
The operation of the paper making apparatus 100 according to the present embodiment will be described below. First, a pulp suspension is manufactured by stirring a predetermined amount of waste paper 6 together with a predetermined amount of water in the waste paper pulp manufacturing unit 1 for a predetermined time. Next, the obtained pulp suspension is sent to the deinking pulp section 2 and deinking treatment is performed to obtain a pulp suspension after deinking. The pulp suspension after deinking is hydrated in the deinking pulp section 2 or in the middle of the distribution path from the deinking pulp section 2 to the papermaking section 3, and adjusted to a predetermined pulp concentration suitable for papermaking. 3 to the head box 11.

As shown in FIG. 3, in the head box 11, the pulp suspension sent from the pipe 51 flows from the inflow part 50 into the storage part 36. As shown in FIG. 6, when air bubbles are mixed in the pulp suspension flowing in from the inflow portion 50, the air bubbles rise straight from the inflow portion 50 in the first chamber 46 and are stored in the pulp suspension. Float or disappear at the surface of the suspension. As described above, since the storage portion 36 is partitioned forward and backward by the partition wall 44, the air bubbles flowing in from the inflow portion 50 can be retained in the first chamber 46 and extinguished, and the air bubbles are transferred to the second chamber 47. It is possible to prevent the mixture from flowing into the pulp suspension supplied onto the papermaking wire 71 and to improve the quality of the recycled paper 7 obtained.

From the start of the inflow of the pulp suspension from the inflow part 50, the drive part is driven to move the flat plate member 53 up and down. By driving the drive unit, the drive gear 62 is rotated through the drive shaft 64, and the pair of front and rear driven gears 63 are rotated, whereby the crankshaft 61 is rotated and the rotating body 60 shown in FIG. 6 is rotated. Let Then, the flat plate member 53 can be reciprocated up and down via the arm 58 by the action of the link member 59.

Thus, by reciprocating the flat plate member 53 up and down, the pulp suspension stored in the storage unit 36 can be agitated, and at a corner of the storage unit 36 or in the middle of the inflow path to the papermaking wire 71. The used paper pulp that stays and is agglomerated by the cohesive force can be crushed and dispersed, the concentration of the used paper pulp in the pulp suspension supplied on the papermaking wire 71 is made uniform, and the ground of the recycled paper 7 obtained Can be improved.

In particular, in the present embodiment, since the flat plate member 53 disposed substantially opposite to the bottom plate 31 is used as the stirring means 55, the pulp suspension in the storage section 36 is stirred very efficiently. It is possible to suppress the generation of bubbles as in the case of rotating the stirring blade in the pulp suspension liquid.

In general, when the pulp suspension is supplied onto the papermaking wire 71, the flow rate of the pulp suspension flowing in the vicinity of the left and right width guides 38, 39 is reduced by friction with the width guides 38, 39. There is a tendency that the liquid amount tends to be smaller in the vicinity of both end portions in the width direction W than the pulp suspension flowing in the substantially central portion of W, and the thickness of the obtained recycled paper 7 is likely to be uneven in the width direction W. . Therefore, in the present embodiment, by thinning the flat member 53 in the vicinity of both end portions in the width direction W in the plan view, a large amount of waste paper pulp can be circulated in the vicinity of both end portions in the width direction W in the storage portion 36. The concentration of the used paper pulp in the pulp suspension supplied on the wire 71 can be made uniform in the width direction W.

Then, when the flat plate member 53 is reciprocated up and down over a plurality of times, a wave having a predetermined height is formed in the pulp suspension sent from the reservoir 36 onto the papermaking wire 71. In the present embodiment, since the flat plate member 53 of the first chamber 46 and the flat plate member 53 of the second chamber 47 are 180 ° out of phase, the liquid level of the pulp suspension stored in the first chamber 46. And the liquid level of the pulp suspension stored in the second chamber 47 are alternately switched, and the pulp suspension from the first chamber 46 through the second chamber 47 to the papermaking wire 71 through the guide plate 42. In addition, waves are more likely to occur.

The frequency of the wave is preferably 100 Hz to 200 Hz, and more preferably 130 Hz to 180 Hz. The frequency of this wave is equal to the frequency of the vertical reciprocation of the flat plate member 53. The speed at which the wave peak advances depends on the size of the storage portion 36, the depth of the pulp suspension that circulates on the guide plate 42, and the like, for example, 200 mm / s to 1000 mm / s in the small head box 11 More preferably, it is about 450 mm / s to 600 mm / s. When the traveling speed of the papermaking wire 71 is, for example, about 5 mm / s to 100 mm / s, preferably about 15 mm / s to 50 mm / s, the traveling speed of the papermaking wire 71 is determined by the reciprocating movement of the flat plate member 53 up and down. It will be slower than the speed of the generated mountain.

Further, when the pulp suspension is caused to flow into the storage portion 36 having a width direction W length of about 30 mm and the inflow speed of the pulp suspension from the inflow portion 50 is about 3 L / min to 15 L / min, a flat plate shape is obtained. Even if the member 53 is reciprocated up and down about 3 to 10 mm, the pulp suspension does not overflow from the rear side plate 33 and the left and right side plates 34 and 35, and the pulp suspension is very efficiently performed in the storage unit 36. Can be stirred.

FIG. 9 is a cross-sectional view schematically showing the state of waves generated by stirring by the stirring means 55. As shown in the figure, a wave generated by the vertical reciprocation of the flat plate member 53 propagates through the liquid level of the pulp suspension flowing on the guide plate 42, and the paper making wire 71 is moved from the front edge of the guide plate 42. When flowing into the liquid, the liquid component in the pulp suspension flows down through the mesh of the papermaking wire 71, and the wave propagating through the liquid surface at this time also disappears. In this way, when the pulp suspension is supplied to the papermaking wire 71, the waste paper pulp that has become agglomerated in the middle of the supply path is dispersed by generating a wave and periodically increasing the liquid volume, thereby obtaining The quality of the recycled paper 7 to be produced can be improved.

When the traveling speed of the papermaking wire 71 is made slower than the propagation speed of the wave mountain 71, the wave peak portion from the rear is predetermined in the solid content made of waste paper pulp remaining on the upper surface of the papermaking wire 71. In order to cover a plurality of times, the unevenness of the waste paper pulp is adjusted, the surface is smoothed, and the formation is further improved.

The pulp suspension supplied on the papermaking wire 71 passes through the mesh, and is guided to the lower water receiving portion 72 by the vertical plate 74 and received by the water receiving portion 72, and then into the white water tank. Be contained. The white water in the white water tank is sent to the waste paper pulp manufacturing unit 1, the deinking pulp unit 2, etc. and reused. The waste paper pulp remaining on the papermaking wire 71 becomes the wet paper 9 which is a fiber layer containing a relatively large amount of moisture.

When the wet paper 9 on the paper making wire 71 reaches the end of the forward path, it is transferred to the water absorbing belt 78a on the upper side of the press part 13. Thereafter, it is sandwiched between the lower water absorption belt 78b and dehydrated by absorbing the moisture contained in the wet paper 9 to the water absorption belt 78 side, and is further squeezed by the squeezing roller 79 and dehydrated.

The wet paper 9 dehydrated by the press unit 13 is sent to the drying unit 14 and is sandwiched between a pair of upper and lower drying belts 84 that run. Then, the wet paper 9 is dried by transporting the wet paper 9 in contact with the plurality of drying rollers 83 that are heated by the heater 85 and maintained at a predetermined temperature via the drying belt 84, and is reproduced before finishing. Obtain paper 7.

Unfinished recycled paper 7 exiting the drying unit 14 is passed between a plurality of press rollers 87. Thereby, the flatness of the recycled paper 7 before finishing is improved, and further, the recycled paper 7 is completed by cutting into a predetermined sheet size with a cutting blade.

The end material of the recycled paper 7 cut by the cutting blade is returned to the used paper pulp manufacturing unit 1 as shown in FIG.

In the above-described embodiment, the flat plate member 53 is horizontally provided so that the flat plate surface is in a substantially horizontal posture, but the flat plate surface may be provided vertically along the vertical direction, and the front end edge and the rear end edge may be provided. You may install it inclining so that height may differ. For example, as indicated by a broken line in FIG. 7, the front end edge of the flat plate member 53 </ b> B may be installed at an upper position than the horizontal direction. Conversely, the front edge may be positioned below the rear edge. Further, the moving means 54 is configured to reciprocate the flat plate member 53 up and down while maintaining the flat surface of the flat plate member 53 in a substantially horizontal posture. It is good also as making it reciprocate right and left, and when the flat surface of a flat plate-like member is inclined, you may reciprocate up and down or back and forth, maintaining this inclined surface.

Moreover, although the flat member 53 was installed over substantially the whole range of the width direction W, a part may be sufficient and the part of the width direction W vicinity part of the planar view storage part 36 is the width direction. Although formed slightly narrower than the W central portion, it may have the same size in the entire range in the width direction, or may have another shape.

Moreover, although the storage part 36 was divided back and forth by the partition wall 44 arrange | positioned in the hollow height position along the width direction W, it is not necessary to necessarily provide the partition wall 44 and the storage part has one storage tank. It is good also as forming by. The partition wall 44 is provided at the hollow height position so as to communicate the lower portion of the first chamber and the second chamber. However, the partition wall 44 may be erected on the bottom plate to communicate the upper portion.

DESCRIPTION OF SYMBOLS S Papermaking apparatus F Supply direction H Papermaking wire apparatus W Width direction 11 Head box 36 Storage part 44 Partition wall 50 Inflow part 53 Flat member 54 Moving means 55 Agitation means 71 Papermaking wire

Claims (6)

An inflow part for allowing pulp suspension, which is a papermaking raw material, to flow into the storage part,
Agitating means for agitating the pulp suspension that is introduced from the inflow portion and stored in the storage portion;
A side plate that forms a part of the reservoir is installed along the width direction substantially perpendicular to the supply direction to feed the paper suspension wire running the pulp suspension in the reservoir,
In the head box that overflows the pulp suspension and supplies it to the papermaking wire from above the side plate,
The stirring means includes a plate-like member installed along the width direction,
Moving means for reciprocating the flat plate member up and down or back and forth with respect to the supply direction;
The flat plate member is a head box in which the portions near both ends in the width direction of the storage portion are formed thinner than other portions. An inflow part for allowing pulp suspension, which is a papermaking raw material, to flow into the storage part,
Agitating means for agitating the pulp suspension that is introduced from the inflow portion and stored in the storage portion;
A side plate that forms a part of the reservoir is installed along the width direction substantially perpendicular to the supply direction to feed the paper suspension wire running the pulp suspension in the reservoir,
In the head box that overflows the pulp suspension and supplies it to the papermaking wire from above the side plate,
The stirring means includes a plate-like member installed along the width direction,
Moving the flat plate member up and down or back and forth with respect to the supply direction , and moving means for generating waves on the liquid level of the pulp suspension supplied on the papermaking wire ,
The reservoir is partitioned into a plurality of chambers by a partition wall,
A flat box member installed in each of the plurality of chambers is adjusted to move with a shifted phase . The flat plate member is laid horizontally so that the flat plate surface is in a substantially horizontal posture,
The head box according to claim 1 or 2, wherein the moving means reciprocally moves the flat plate member up and down while the flat plate surface maintains a substantially horizontal posture. The head box according to any one of claims 1 to 3, wherein the storage section is partitioned forward and backward with respect to the supply direction by a partition wall disposed at a hollow height position along the width direction. A papermaking apparatus comprising at least the head box according to any one of claims 1 to 4 and a papermaking wire device provided with a papermaking wire. A papermaking apparatus comprising at least the papermaking apparatus according to claim 5.

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