JP5748410B2 - Head box, paper machine, and used paper recycling processor - Google Patents

Description

  The present invention relates to a head box that supplies a pulp suspension to a paper making wire, a paper making apparatus that includes the head box, and a used paper recycling apparatus that includes the paper making apparatus.

  Conventionally, for this type of head box, as shown in FIG. 31, an overflow tank 132 is provided in the head box 131, and the pulp suspension 133 stored in the overflow tank 132 overflows from the overflow section 134. Then, it flows down onto the papermaking wire 135 and is supplied. The papermaking wire 135 is provided in the pulp supply unit 136 of the papermaking unit of the used paper recycling apparatus, and the head box 131 is installed and fixed to the pulp supply unit 136.

JP2007-308837

  However, although the pulp suspension 133 can be easily diffused in the width direction due to the presence of the overflow tank 132 in the conventional type, the fibers in the pulp suspension 133 are unlikely to cross the overflow portion 134. However, there is a problem that the fiber is blocked by the overflow part 134 and the discharge of the fibers is hindered. When the discharge of fibers is hindered in this way, a large amount of fibers are not discharged but remain in the overflow tank 132, so that the fiber concentration of the pulp suspension 133 supplied from the overflow tank 132 onto the papermaking wire 135 is reduced. This caused a problem of a significant drop.

  In addition, a large amount of fibers staying in the overflow tank 132 as described above may flow together and overflow the overflow section 134. In such a case, the pulp supplied from the overflow tank 132 onto the papermaking wire 135 The fiber concentration of the suspension 133 suddenly increased, and the fiber concentration fluctuated greatly. As a result, there was a problem that the formation (homogeneity) of the paper obtained in the paper making process was deteriorated.

In addition, since the head box 131 is fixed to the pulp supply unit 136, there is a problem that it is difficult to clean and inspect the head box 131.
Further, when the inside of the head box 131 is washed, there is a problem that the washing waste liquid after washing is discharged onto the paper making wire 135 and the paper making wire 135 is clogged with fibers in the washing waste liquid.

  The present invention prevents the fiber discharge in the pulp suspension from being hindered, can suppress fluctuations in the fiber concentration of the pulp suspension discharged to the papermaking wire, and can be easily washed. It is an object of the present invention to provide a headbox, a papermaking apparatus, and a used paper recycling apparatus that can be maintained and inspected and can prevent clogging of a papermaking wire during cleaning.

In order to achieve the above object, the first invention is a head box for supplying a pulp suspension containing fibers onto a papermaking wire,
A storage part for temporarily storing the pulp suspension flowing in from the inflow part of the pulp suspension, a discharge part for discharging the pulp suspension of the storage part onto the papermaking wire, and a discharge part from the lower part of the storage part to the discharge part a discharge passage leading, and a closing member for opening and closing the discharge flow path was closed,
The opening / closing member is swingable around a swing center provided above the storage portion,
The open / close member is pressed in the opening direction to open the discharge flow path by receiving the head pressure of the pulp suspension in the storage section, and forms a gap in the discharge flow path that connects the storage section and the discharge section. is there.

According to this, the pulp suspension flows into the storage part from the inflow part and is temporarily stored. When the head pressure of the pulp suspension received by the opening / closing member reaches a predetermined pressure or more, the opening / closing member Is pushed in the opening direction by the water head pressure, and a gap that communicates the storage part and the discharge part is formed in the discharge flow path. Thereby, the pulp suspension in the storage part is discharged from the discharge part onto the papermaking wire through the gap of the discharge channel. At this time, since the fibers in the pulp suspension flow into the discharge channel from the lower part of the storage part, the fibers are discharged smoothly, and a large amount of fibers are not discharged and stay in the storage part. be able to.

  Thereby, it can prevent that the fiber concentration of the pulp suspension supplied on a papermaking wire from a head box falls significantly. In addition, since a large amount of fibers are not collected at once from the discharge section onto the papermaking wire, the fiber concentration of the pulp suspension supplied from the headbox onto the papermaking wire is prevented from rapidly increasing. can do. Thereby, the fluctuation | variation of the fiber density | concentration of the pulp suspension discharged | emitted on papermaking wire can be suppressed.

The head box in the second invention is a head box for supplying a pulp suspension containing fibers onto a papermaking wire,
A storage part for temporarily storing the pulp suspension flowing in from the inflow part of the pulp suspension, a discharge part for discharging the pulp suspension of the storage part onto the papermaking wire, and a discharge part from the lower part of the storage part to the discharge part A discharge flow path, and an opening / closing member that opens and closes the discharge flow path,
The opening / closing member is urged in the closing direction to close the discharge flow path by its own weight .

The head box in the third invention is a head box for supplying a pulp suspension containing fibers onto a papermaking wire,
A storage part for temporarily storing the pulp suspension flowing in from the inflow part of the pulp suspension, a discharge part for discharging the pulp suspension of the storage part onto the papermaking wire, and a discharge part from the lower part of the storage part to the discharge part A discharge flow path, and an opening / closing member that opens and closes the discharge flow path,
The opening / closing member reaches the discharge flow path through the storage portion, and opens and closes the discharge flow path by vibrating .

According to this, the pulp suspension flows from the inflow part into the storage part and is temporarily stored, and the opening / closing member vibrates to repeatedly open and close the discharge flow path. When the discharge flow path is open, the pulp suspension in the storage section passes through the discharge flow path and is discharged from the discharge section onto the papermaking wire. When the discharge flow path is closed, the pulp suspension in the storage section is discharged. Not discharged from the discharge section. In this way, the opening / closing member supplies the pulp suspension from the head box onto the papermaking wire while oscillating in the opening / closing direction and repeatedly opening and closing the discharge channel.
At this time, since the pulp suspension in the reservoir is agitated by the vibration in the opening / closing direction of the opening / closing member, the fibers in the pulp suspension are evenly dispersed, and the pulp suspension with a uniform fiber concentration is the head box. Is supplied on the papermaking wire. Thereby, the fluctuation | variation of the fiber density | concentration in the pulp suspension supplied to a papermaking wire can be suppressed further, and the formation of the paper obtained at a papermaking process can be improved further.

The head box in the fourth invention is a head box for supplying a pulp suspension containing fibers onto a papermaking wire,
A storage part for temporarily storing the pulp suspension flowing in from the inflow part of the pulp suspension, a discharge part for discharging the pulp suspension of the storage part onto the papermaking wire, and a discharge part from the lower part of the storage part to the discharge part And an open / close member that opens and closes the discharge flow path and stirs the pulp suspension in the reservoir by vibration in the open / close direction .

In the head box according to the fifth aspect of the present invention, the bottom surface of the storage portion is inclined downward toward the discharge channel.
According to this, since the fiber in the pulp suspension slides down on the bottom surface of the storage part toward the discharge channel, it surely flows into the discharge channel. Thereby, discharge | emission of the said fiber is accelerated | stimulated. Moreover, it is possible to discharge | emit all without leaving the pulp suspension in a storage part.

In the head box according to the sixth aspect of the present invention, a guide member for guiding the pulp suspension discharged from the discharge portion onto the paper making wire to the downstream side in the moving direction of the paper making wire is provided in the discharge portion .

According to this, since the pulp suspension discharged onto the papermaking wire from the discharge portion is guided downstream by the guide member, the pulp suspension discharged onto the papermaking wire flows backward to the upstream side of the papermaking wire. Can be prevented.

The head box according to the seventh aspect of the invention is divided into a plurality of compartments in the width direction by a partition plate in the storage section,
The inflow part of the pulp suspension is provided corresponding to each compartment,
On the downstream side of the discharge unit, a partition member that partitions the pulp suspension discharged from the discharge unit onto the papermaking wire into a plurality of papermaking regions in the width direction is provided corresponding to the partition plate,
The partition member is freely movable between a partition position in sliding contact with the paper making wire and a retracted position spaced apart above the paper making wire.

  According to this, all the partition members are moved to the retreat position and separated from the paper making wire, and the pulp suspension is introduced into all the compartments of the storage part from all the inflow parts, whereby the opening and closing members are discharged from the discharge channel. And the pulp suspension in all the compartments is discharged from the discharge portion onto the papermaking wire through the discharge passage. At this time, since all the partition members are switched to the retracted position as described above, the pulp suspension is supplied to all the paper making regions, and paper with a predetermined maximum width can be made.

  When paper having a predetermined width smaller than the maximum width is to be made, the predetermined partitioning member corresponding to the desired papermaking width is moved to the partitioning position and brought into sliding contact with the papermaking wire, and the predetermined width corresponding to the desired papermaking width is obtained. When the pulp suspension flows into the predetermined compartment of the storage section from the inflow portion of the storage, the open / close member opens the discharge passage, and the pulp suspension in the predetermined compartment according to the desired papermaking width is discharged to the discharge section. Is discharged onto the papermaking wire. At this time, since the predetermined partitioning member is switched to the partitioning position as described above, the supply range of the pulp suspension discharged from the discharge unit onto the papermaking wire is set to the predetermined papermaking region by the predetermined partitioning member. It is divided and limited. As a result, paper having a predetermined width smaller than the maximum width can be made. At this time, the pulp suspension discharged to the paper making wire crosses the partition member from the predetermined paper making region in the width direction (side). Then, it can be prevented from flowing into the adjacent papermaking area.

The eighth invention is a papermaking apparatus comprising a head box for supplying a pulp suspension containing fibers onto a papermaking wire ,
The head box has a storage part for temporarily storing the pulp suspension flowing in from the inflow part of the pulp suspension, a discharge part for discharging the pulp suspension in the storage part onto the papermaking wire, and a lower part of the storage part. A discharge passage extending from the discharge portion to the discharge portion, and an opening / closing member for opening and closing the discharge passage,
A storage means for storing the filtrate that has passed through the papermaking wire is provided below the papermaking wire,
A cleaning drainage discharge path for discharging the cleaning drainage after cleaning the inside of the headbox to the storage means is connected to the headbox.

  According to this, the fiber adhering in the head box can be removed by washing the inside of the head box. At this time, the cleaning drainage after cleaning the inside of the head box is discharged from the cleaning drainage discharge path to the storage means, so that the cleaning drainage is not discharged onto the papermaking wire. It is possible to prevent clogging by the fibers.

The papermaking apparatus in the ninth invention is a papermaking apparatus provided with a head box for supplying a pulp suspension containing fibers onto a papermaking wire,
A storage means for storing the filtrate that has passed through the papermaking wire is provided below the papermaking wire,
A cleaning drainage discharge path for discharging the cleaning drainage after cleaning the inside of the headbox to the storage means is connected to the headbox .
According to this, the fiber adhering in the head box can be removed by washing the inside of the head box. At this time, the cleaning drainage after cleaning the inside of the head box is discharged from the cleaning drainage discharge path to the storage means, so that the cleaning drainage is not discharged onto the papermaking wire. It is possible to prevent clogging by the fibers.

In the papermaking apparatus according to the tenth invention , slide frames are provided at both ends of a head box for supplying a pulp suspension containing fibers onto the papermaking wire,
A support guide frame is provided on the installation part above the papermaking wire,
The slide frame is supported by the support guide frame and slides with respect to the support guide frame, so that the head box is detachably installed on the installation section above the papermaking wire.

In the papermaking apparatus according to the eleventh aspect of the invention, the head box is detachably installed on an installation part above a papermaking wire for making a pulp suspension.

  According to this, the head box can be easily cleaned or inspected for maintenance by removing the head box from the installation part. Thereafter, the paper box can be used for paper making by attaching the head box to the installation section.

The twelfth aspect of the present invention is a used paper recycling apparatus comprising the papermaking apparatus according to any one of the eighth to eleventh aspects,
A pulper device for producing pulp suspension by disaggregating waste paper is provided, and the pulp suspension produced by the pulper device is made by a papermaking device.

  As described above, according to the present invention, when the pulp suspension is discharged (supplied) from the head box onto the papermaking wire, the fiber suspension in the pulp suspension is prevented from being interrupted and discharged to the papermaking wire. Therefore, it is possible to improve the formation of the paper obtained in the paper making process.

  In addition, the head box can be easily cleaned and inspected. Furthermore, it is possible to prevent the papermaking wire from being clogged by the fibers in the cleaning liquid after cleaning the inside of the head box.

It is the schematic which shows the main structures of the used paper reproduction | regeneration processing apparatus in the 1st Embodiment of this invention. FIG. 2 is a block diagram showing the main configuration of the used paper recycling processing apparatus. It is the schematic which shows the main structures of the papermaking apparatus of a used paper recycling processing apparatus. It is a partially cutaway side view of the wire part of the paper making apparatus. It is a top view of the wire part of a papermaking apparatus. It is a top view of the head box of a wire part similarly. It is a XX arrow line view in FIG. It is an enlarged view of the opening / closing member of a head box, (a) is an open state, (b) shows a closed state. It is a perspective view of the head box in the 2nd Embodiment of this invention. The state when paper of a large size is made using the head box is shown, (a) is a plan view, and (b) is an XX arrow view in (a). FIG. 6 shows a state when paper of a small size is made using the head box, where (a) is a plan view and (b) is a view taken along line XX in (a). It is a YY arrow line view in FIG.10 (b). (A) is a ZZ arrow view in FIG.10 (b), (b) is a ZZ arrow view in FIG.11 (b). It is a front view of the opening / closing member of the head box in the 3rd Embodiment of this invention. It is a perspective view of the opening / closing member of a head box. It is a partially notched side view of the wire part of the papermaking apparatus in the 4th Embodiment of this invention. It is a top view of a wire part similarly. It is a partially expanded longitudinal cross-sectional view of the head box of a wire part. FIG. 3 is a perspective view of a first cleaning device for cleaning the head box. FIG. 6 is a perspective view of a second cleaning device for cleaning the head box. It is a side view of the wire part of the papermaking apparatus in the 5th Embodiment of this invention. It is a top view of the wire part of a papermaking apparatus. It is the perspective view which looked at the wire part of the papermaking apparatus from diagonally upward. FIG. 3 is a perspective view of the wire portion of the paper making apparatus, and shows a state in which the head box is pulled out from the installation position as viewed from the front side in the pulling direction. It is a perspective view of the wire part of a papermaking apparatus, and shows the state which pulled out the head box from the installation position from the pulling direction back side. It is a top view of the wire part of a papermaking apparatus similarly, and shows the state which pulled out the head box from the installation position. It is the perspective view which looked at the wire part of the papermaking apparatus from diagonally downward. It is a partially expanded perspective view of the head box of a wire part and a locking device, (a) shows a locked state, (b) shows an unlocked state. It is a figure of the locking device of a head box, (a) is a perspective view in a locked state, (b) is a XX arrow view in (a). It is a figure of the locking device of a head box, (a) is a perspective view in a lock release state, (b) is a XX arrow view in (a). It is a longitudinal cross-sectional view of the conventional head box.

(First embodiment)
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings. 1 and 2 are a schematic diagram and a block diagram showing the configuration of the used paper recycling processing apparatus 1. The used paper recycling processing apparatus 1 includes a used paper pulp manufacturing device 2, a deinking device 3, a paper making device 4, a finishing device 5, and a waste liquid. It is a small one that integrally includes the processing device 6.

  The used paper pulp manufacturing apparatus 2 includes a cutting unit 8 that cuts the used paper 7 and a pulper device 9 that separates the cut used paper 7 to produce a pulp suspension 12 containing fibers. The deinking device 3 deinks the pulp suspension 12 produced in the pulper device 9.

  As shown in FIG. 3, the paper making device 4 makes the pulp suspension 12 produced by the pulper device 9 and then deinked by the deinking device 3, and dries the wet paper 10 obtained by the paper making. It is. The finishing device 5 performs finishing by cutting the wet paper 10 dried in the paper making device 4 into a predetermined size, and obtains recycled paper 11. Further, the drainage treatment device 6 is for treating the drainage generated in each of the deinking device 3 and the papermaking device 4.

  The paper making apparatus 4 includes, in order from the upstream side to the downstream side, a wire unit 15 that generates the wet paper 10 from the pulp suspension 12, a press unit 16 that compresses and dehydrates the wet paper 10, and a drying unit that dries the wet paper 10. 17.

Below, the structure of the wire part 15 is demonstrated.
As shown in FIGS. 4 and 5, an endless paper-making wire 18 is provided in the wire portion 15, and the paper-making wire 18 rotates in one direction, so that the pulp suspension 12 containing fibers becomes a head box 19. Is supplied onto the papermaking wire 18 and is filtered and dehydrated while being transferred from the upstream side A to the downstream side B along the dewatering path 23 of the papermaking wire 18.

  The papermaking wire 18 is a mesh-structured belt (for example, a metal or resin net) having water permeability, and is wound around a plurality of rotatable rollers 20 to 22. The dewatering path 23 is formed between the first roller 20 and the second roller 21, and the paper making wire 18 in the dewatering path 23 is gently so as to rise upward from the upstream side A to the downstream side B. Inclined. Each of the rollers 20 to 22 is provided between a pair of side frames 24 provided on the wire portion 15. Any one of the rollers 20 to 22 is forcibly rotated by a driving device such as a motor.

  As shown in FIGS. 6 to 8, the head box 19 is attached and fixed between the side frames 24 via an attachment frame (not shown), and is disposed above the paper making wire 18. The head box 19 includes a storage unit 28 for temporarily storing the pulp suspension 12 flowing in from the inflow unit 27, and a discharge unit 29 for discharging the pulp suspension 12 in the storage unit 28 onto the papermaking wire 18. The discharge passage 30 extends from the lower portion of the storage portion 28 to the discharge portion 29, and the opening / closing member 31 opens and closes the discharge passage 30.

The inflow portion 27 is a tubular member that supplies the deinked pulp suspension 12 from the deinking device 3 to the storage portion 28, and is attached to the distal end portion of the supply conduit 26 connected to the deinking device 3. ing.
The storage portion 28 is formed in a rectangular box shape with an open top, and a pair of plate-like side guide members 32 a and 32 b facing each other in the width direction W of the papermaking wire 18 and the dewatering of the papermaking wire 18. The opening / closing member 31 on the upstream side and the vertical plate member 34 on the downstream side B, the side guide members 32 a and 32 b, the opening / closing member 31, and the vertical plate member 34 that are opposite to each other in the direction of the path 23 are provided. And a plate-like bottom member 35. Accordingly, the opening / closing member 31 constitutes one side surface of the upstream side A of the storage portion 28. Further, another vertical plate member 33 is disposed opposite to the upstream side A of the opening / closing member 31, and this vertical plate member 33 is provided between the pair of side guide members 32a and 32b.

  The side guide members 32 a and 32 b are in sliding contact with the paper making wire 18 at the lower ends, and prevent the pulp suspension 12 discharged from the discharge portion 29 from flowing down to the outside of the paper making wire 18. .

  A lower vertical plate 36 is provided downward at the upstream end A of the bottom member 35 of the storage portion 28, and the discharge flow path 30 is formed between the lower vertical plate 36 and the lower portion of the opening / closing member 31. ing. The upper end of the discharge channel 30 communicates with the bottom of the storage unit 28, and the lower end of the discharge channel 30 communicates with the discharge unit 29. In addition, the discharge part 29 and the discharge flow path 30 are provided over a pair of side part guide members 32a and 32b, respectively. Further, the bottom surface of the storage portion 28 is inclined downward toward the upstream side A toward the upper end opening of the discharge channel 30.

  The opening / closing member 31 is suspended above and supported by a support shaft 40 that is located above the storage portion 28 and provided on both side guide members 32a and 32b. , S can be swung freely. Further, the opening / closing member 31 reaches the inside of the discharge flow path 30 through the storage portion 28 from above.

  Further, as shown in FIG. 7, the shaft center of the support shaft 40 is positioned to be shifted to the downstream side B by a predetermined length L from the edge of the upstream side A of the bottom member 35 when compared in the horizontal direction. Thereby, in a state where there is no pulp suspension 12 stored in the storage unit 28 and the head pressure of the pulp suspension 12 is not received, the opening / closing member 31 has an edge on the upstream side A of the bottom member 35 by its own weight. The discharge channel 30 is configured to be closed.

  The opening / closing member 31 is pushed in the opening direction O by receiving the hydraulic head pressure of the pulp suspension 12 in the storage unit 28 and swings in the opening direction O as shown in FIG. A gap 41 is formed in the discharge flow path 30 so as to communicate the 28 and the discharge portion 29. Further, as shown in FIG. 7, the shaft center of the support shaft 40 is shifted from the end of the upstream side A of the bottom member 35 to the downstream side B by a predetermined length L, and the lower part of the opening / closing member 31 is the bottom member. Since it abuts on the edge of the upstream side A of 35, the opening / closing member 31 is urged in the closing direction S for closing the discharge portion 29 by its own weight, as shown in FIG. The open / close member 31 has a fully open position Po (see FIG. 8A) where the lower end is in contact with the inner surface of the vertical plate member 33 on the upstream side A, and the upstream side A of the bottom member 35 of the storage portion 28 is the lower end. It swings within the range of the fully closed position Ps (see FIG. 8B) that abuts the end portion.

  The discharge portion 29 is provided with a plate-shaped guide member 43. The guide member 43 guides the pulp suspension 12 discharged from the discharge portion 29 onto the papermaking wire 18 to the downstream side B in the moving direction of the papermaking wire 18, and the lower end of the vertical plate member 33 on the upstream side A. In addition, it is provided between the lower ends of both side guide members 32a and 32b, and is provided from the lower part of the discharge part 29 toward the downstream side B. The lower surface of the guide member 43 is in sliding contact with the papermaking wire 18.

  As shown in FIG. 4, a white water tank 45 (an example of a storage unit) that stores filtrate 44 that has passed through the papermaking wire 18 is provided below the papermaking wire 18. The filtrate 44 is also called white water because it is a white liquid containing fibers.

  As shown in FIG. 3, the press unit 16 includes a pair of upper and lower rotatable endless felts 47 and 48 that squeeze the wet paper 10 transferred from the wire unit 15 from both the front and back surfaces. An example) is provided. The upper felt 47 is wound around a plurality of upper rollers 49a to 49e, and the lower felt 48 is wound around a plurality of lower rollers 50a to 50e.

  Further, the drying unit 17 is provided with a pair of upper and lower rotatable endless transport belts 52 and 53 for transporting the wet paper 10 transferred from the press unit 16 from the front and back surfaces to the finishing device 5. . The upper conveyor belt 52 is wound around a plurality of rollers 54a to 54d, and the lower conveyor belt 53 is wound around a plurality of rollers 55a to 55d. Among these, the rollers 54b, 54c, 55a, and 55b have a function of a drying roller having a heating device 56 (heater) therein.

Hereinafter, the operation of the above configuration will be described.
As shown in FIGS. 1 to 3, by supplying the used paper 7 to the used paper recycling apparatus 1, the used paper 7 is cut by the cutting unit 8 of the used paper pulp manufacturing apparatus 2 and then separated by the pulper device 9. A pulp suspension 12 is produced. Thereafter, the pulp suspension 12 is deinked by the deinking device 3 and is made by the papermaking device 4. Note that the deinking step by the deinking device 3 can be omitted. In this case, the pulp suspension 12 generated by the pulper device 9 is made by the papermaking device 4 without being deinked.

  When paper making is performed by the paper making device 4, as shown in FIG. 4, one of the rollers 20 to 22 of the wire portion 15 is forcibly rotated by the driving device, and the other rollers are driven to rotate. And the papermaking wire 18 rotates in one direction.

  As shown in FIG. 7, the pulp suspension 12 deinked in the deinking device 3 flows into the storage portion 28 of the head box 19 from the inflow portion 27 and is temporarily stored. As a result, bubbles remaining in the pulp suspension 12 in the previous deinking step are released (degassed) from the pulp suspension 12 in the reservoir 28.

  When a predetermined amount or more of the pulp suspension 12 is stored in the storage unit 28 and the water head pressure of the pulp suspension 12 received by the opening / closing member 31 reaches a predetermined pressure or more, the opening / closing member 31 It is pushed in the opening direction O by the water head pressure of the liquid 12, and swings in the opening direction O from the fully closed position Ps as shown in FIG.

  As a result, a discharge channel 30 is formed by a gap 41 that communicates between the storage unit 28 and the discharge unit 29, and the pulp suspension 12 in the storage unit 28 passes through the discharge channel 30 (gap 41). 29 is discharged onto the papermaking wire 18. At this time, since the fibers in the pulp suspension 12 flow into the discharge channel 30 from the lower part of the storage unit 28, the fibers are discharged smoothly and remain in the storage unit 28 without discharging a large amount of fibers. Can be prevented.

  Thereby, it can prevent that the fiber density | concentration of the pulp suspension 12 supplied on the papermaking wire 18 from the head box 19 falls significantly. Further, since a large amount of fibers are not collected at once from the discharge unit 29 onto the paper making wire 18, the fiber concentration of the pulp suspension 12 supplied from the head box 19 onto the paper making wire 18 is rapidly increased. It can be prevented from rising. Thereby, the fluctuation | variation of the fiber density | concentration of the pulp suspension 12 discharged | emitted on the papermaking wire 18 can be suppressed.

  At this time, as shown in FIG. 7, since the bottom surface of the storage portion 28 is inclined downward toward the upper end opening of the discharge flow path 30, the fibers in the pulp suspension 12 are stored in the storage portion 28. It slides down on the bottom surface and surely flows into the discharge channel 30. Thereby, discharge | emission of the fiber in the pulp suspension 12 is accelerated | stimulated.

  Further, as shown in FIG. 8A, when the pulp suspension 12 flows through the gap 41, the flow velocity increases in the gap 41 to generate a negative pressure, and the opening / closing member 31 is generated by the negative pressure. In addition to being drawn in the closing direction S (Venturi effect), the opening / closing member 31 is swung to the fully closed position Ps as shown in FIG. The discharge channel 30 is closed by moving. Thereby, discharge | emission of the pulp suspension 12 in the storage part 28 is stopped temporarily. In this way, the opening / closing member 31 discharges (supplies) the pulp suspension 12 from the discharge portion 29 onto the paper making wire 18 while oscillating in the opening / closing directions O and S and repeatedly opening and closing the discharge passage 30.

  At this time, because the pulp suspension 12 in the reservoir 28 is agitated by the vibration in the opening / closing directions O and S of the opening / closing member 31, the fibers in the pulp suspension 12 are evenly dispersed and the fiber concentration is uniform. The pulp suspension 12 is supplied from the head box 19 onto the papermaking wire 18. Thereby, the fluctuation | variation of the fiber density | concentration in the pulp suspension 12 supplied to the papermaking wire 18 can be suppressed further, and the formation of the paper obtained at a papermaking process can be improved further.

  Further, the pulp suspension 12 discharged from the discharge portion 29 onto the papermaking wire 18 is received by the guide member 43 from below and guided to the downstream side B. For this reason, it is possible to prevent the pulp suspension 12 discharged on the papermaking wire 18 from flowing back to the upstream side A of the papermaking wire 18.

  The pulp suspension 12 supplied from the head box 19 onto the papermaking wire 18 as described above is filtered and dehydrated in the dewatering path 23 to become a sheet-like wet paper 10 in which fibers are intertwined. The wet paper 10 thus produced is transferred from the papermaking wire 18 of the wire part 15 to the felt 47 on the upper part of the press part 16 and introduced between the felts 47 and 48 as shown in FIG. Watered.

  Thereafter, the wet paper 10 is transferred from the press unit 16 to the drying unit 17, and is transported by being sandwiched between a pair of upper and lower rotating conveyor belts 52, 53 in the drying unit 17, while being roller 54 b, 54 c, 55 a, It is dried by the heat of the heating device 56 in 55b.

  The wet paper 10 dried in the drying unit 17 is transferred from the drying unit 17 to the finishing device 5 and cut into a predetermined size in the finishing device 5, and as shown in FIG. The paper is discharged.

(Second Embodiment)
The second embodiment of the present invention will be described below with reference to FIGS.
As shown in FIGS. 9 and 10, the storage portion 28 is partitioned by a partition plate 65 into a first partition chamber 66 a and a second partition chamber 66 b (an example of a plurality of partition chambers) in the width direction W. Yes. The inflow portion of the pulp suspension 12 is divided into a first inflow portion 27a corresponding to the first compartment chamber 66a and a second inflow portion 27b corresponding to the second compartment chamber 66b. The first inflow portion 27a supplies the pulp suspension 12 into the first compartment 66a, and the second inflow portion 27b supplies the pulp suspension 12 into the second compartment 66b. Is.

  Each of the first inflow portion 27a and the second inflow portion 27b is provided with a valve (not shown) that opens and closes the flow path. By opening and closing the valve of the first inflow portion 27a, the supply and stoppage of the pulp suspension 12 from the first inflow portion 27a to the first compartment 66a can be switched. Similarly, the supply and stop of the supply of the pulp suspension 12 from the second inflow portion 27b to the second compartment 66b can be switched by opening and closing the valve of the second inflow portion 27b.

As shown in FIG. 12, a slit 67 is formed in the opening / closing member 31, and the partition plate 65 is inserted through the slit 67 so as not to contact the opening / closing member 31.
As shown in FIGS. 10, 11, and 13, on the downstream side B of the discharge unit 29, the pulp suspension 12 discharged from the discharge unit 29 onto the papermaking wire 18 is a first papermaking region in the width direction W. A partition member 69 is provided for partitioning into 68a and a second papermaking area 68b (an example of a plurality of papermaking areas). The partition member 69 is a flat plate-like member and is positioned below the partition plate 65 corresponding to the partition plate 65.

  A mounting plate 70 is provided between the side guide members 32 a and 32 b behind the downstream side B of the storage portion 28, and the partition member 69 is attached to the mounting plate 70 via a parallel link mechanism 71. By swinging the link 71a of the parallel link mechanism 71, the partition member 69 is moved to the partition position C in sliding contact with the paper making wire 18 as shown in FIGS. 11 and 13 (b), and to FIGS. 10 and 13 (a). As shown, it can be moved up and down to a retreat position D that is spaced above the papermaking wire 18.

  Further, the mounting plate 70 is provided with a lifting drive device 72 that lifts and lowers the partition member 69. The elevating drive device 72 includes a motor 73, a disc-shaped crank plate 74 provided on the rotation shaft of the motor 73, and an arm 75 connected to the crank plate 74 and the partition member 69. The arm 75 is vertically inserted through a through hole 76 formed in the mounting plate 70.

Hereinafter, the operation of the above configuration will be described.
For example, when forming a belt-like wet paper 10 (an example of paper having a predetermined maximum width) having a long width (297 mm) of A4, the crank plate 74 is rotated by driving the motor 73 to interlock with the arm 75. Then, the link 71a swings, and the partition member 69 is raised to the retracted position D and separated from the paper making wire 18, as shown in FIGS.

  In this state, the pulp suspension 12 is caused to flow from the first inflow portion 27a to the first compartment chamber 66a of the storage portion 28 and from the second inflow portion 27b to the second compartment chamber 66b of the storage portion 28. Let it flow.

  Thereby, like the said 1st Embodiment, the opening-and-closing member 31 repeatedly opens and closes the discharge flow path 30, vibrating, and the pulp suspension 12 in the 1st and 2nd compartment 66a, 66b is made to open and close. The paper is discharged (supplied) from the discharge unit 29 onto the papermaking wire 18. At this time, since the partition member 69 is switched to the retracted position D as described above, the pulp suspension 12 is supplied to all the paper making regions 68a and 68b, and the A4 wet paper 10 can be made.

  The pair of side guide members 32a and 32b can prevent the pulp suspension 12 discharged on the paper making wire 18 from flowing down to the outside of the paper making wire 18, so that the width of the paper to be made is made. Can be prevented from greatly fluctuating.

  Further, for example, when forming a belt-like wet paper 10 of B5 size smaller than A4 size (an example of paper having a predetermined width smaller than the maximum width), by driving the motor 73 and rotating the crank plate 74, The link 71a swings in conjunction with the arm 75, and as shown in FIGS. 11 and 13 (b), the partition member 69 is lowered to the partition position C and brought into sliding contact with the papermaking wire 18. As a result, a first papermaking region 68a is formed between the partition member 69 and one side guide member 32a, and a second papermaking region 68b is formed between the partition member 69 and the other side guide member 32b. The two paper making regions 68 a and 68 b are partitioned by a partition member 69.

  Then, the pulp suspension 12 is changed from the first inflow portion 27a (an example of a predetermined inflow portion according to a desired papermaking width) to a first compartment 66a (an example of a predetermined compartment according to a desired papermaking width). ) And the inflow of the pulp suspension 12 from the second inflow portion 27b to the second compartment 66b is stopped.

  As a result, as in the first embodiment, the opening / closing member 31 repeatedly opens and closes the discharge passage 30 while vibrating, and the pulp suspension 12 flows into the second compartment 66b. Therefore, only the pulp suspension 12 in the first compartment 66a is discharged (supplied) from the discharge portion 29 onto the papermaking wire 18. At this time, since the partition member 69 is switched to the partition position C as described above, the supply range of the pulp suspension 12 discharged from the discharge portion 29 onto the papermaking wire 18 is set to the first papermaking by the partitioning member 69. It is partitioned and limited to an area 68a (an example of a predetermined papermaking area corresponding to a desired papermaking width). As a result, paper having a width of B5 can be made. At this time, the pulp suspension 12 discharged to the paper making wire 18 flows from the first paper making area 68a across the partition member 69 in the width direction W (side) into the adjacent second paper making area 68b. Can be prevented.

(Third embodiment)
The third embodiment of the present invention will be described below with reference to FIGS.
In the second embodiment, the slit 67 is formed in the opening / closing member 31 (see FIG. 12), but in the third embodiment, the slit 67 is not formed, and as shown in FIGS. In the width direction W, the opening / closing member 31 is divided into a first opening / closing member 31a corresponding to the first compartment 66a and a second opening / closing member 31b corresponding to the second compartment 66b. The first opening / closing member 31a is swingable in the opening / closing directions O and S around the support shaft 40, and reaches the inside of the discharge flow path 30 through the first compartment 66a from above. Further, the second opening / closing member 31b is swingable in the opening / closing directions O and S about the support shaft 40, and reaches the inside of the discharge flow path 30 through the second compartment 66b from above. The first opening / closing member 31a and the second opening / closing member 31b can swing individually.

  Further, a predetermined gap 79 is formed between the first opening / closing member 31a and the second opening / closing member 31b, and the partition plate 65 does not contact the first and second opening / closing members 31a, 30b. Thus, the gap 79 is inserted.

Hereinafter, the operation of the above configuration will be described.
For example, when the A4 belt-like wet paper 10 is formed, the partition member 69 is raised to the retracted position D and separated from the paper making wire 18. In this state, the pulp suspension 12 is caused to flow from the first inflow portion 27a into the first compartment 66a and from the second inflow portion 27b into the second compartment 66b.

  Thereby, like the said 1st Embodiment, the 1st opening-and-closing member 31a and the 2nd opening-and-closing member 31b repeatedly open and close the discharge flow path 30, respectively vibrating, respectively, and 1st and 2nd The pulp suspension 12 in the compartments 66 a and 66 b is discharged from the discharge portion 29 onto the paper making wire 18. At this time, since the partition member 69 is switched to the retracted position D as described above, paper having an A4 size width can be made.

  For example, when forming the B5 belt-shaped wet paper 10, the partition member 69 is lowered to the partition position C and is brought into sliding contact with the paper making wire 18. Then, the pulp suspension 12 is caused to flow from the first inflow portion 27a to the first compartment 66a, and the inflow of the pulp suspension 12 from the second inflow portion 27b to the second compartment 66b is stopped. Let

  As a result, as in the first embodiment, the interior of the second compartment 66b is emptied, so that only the first opening / closing member 31a repeatedly opens and closes the discharge passage 30 while vibrating, Only the pulp suspension 12 in the compartment 66 a is discharged from the discharge portion 29 onto the paper making wire 18. At this time, since the partition member 69 is switched to the partition position C as described above, the supply range of the pulp suspension 12 discharged from the discharge portion 29 onto the papermaking wire 18 is set to the first papermaking by the partitioning member 69. The region 68a is limited to be partitioned. Thereby, the belt-shaped wet paper 10 of B5 can be formed.

Since the first opening / closing member 31a is smaller and lighter than the entire opening / closing member 31 in the second embodiment, the first opening / closing member 31a has good responsiveness when vibrating and discharging the pulp suspension 12.
In the second and third embodiments, the A4 and B5 size belt-shaped wet paper 10 has been described as an example. However, the present invention is not limited to these sizes.

  In the second and third embodiments, the storage section 28 is divided into two partition chambers 66a and 66b by one partition plate 65, but a plurality of partition plates 65 are provided in the storage section 28. The inside of the storage unit 28 may be divided into three or more compartments.

  Further, the papermaking wire 18 is partitioned into two papermaking regions 68a and 68b by a single partitioning member 69, but a plurality of partitioning members 69 are provided so that the papermaking wire 18 is divided into three or more papermaking regions. You may partition.

(Fourth embodiment)
Hereinafter, a fourth embodiment of the present invention will be described with reference to FIGS.
The wire section 15 of the paper making apparatus 4 is provided with first and second cleaning apparatuses 82 and 83 for cleaning the discharge section 29 of the head box 19 with the cleaning liquid 81. The first cleaning device 82 includes a first cleaning nozzle 84 provided on the bottom outer surface of the storage unit 28, and a first cleaning pipe 85 that supplies the cleaning liquid 81 to the first cleaning nozzle 84. As shown in FIG. 19, the first cleaning nozzle 84 is a fan-shaped member extending in the width direction W from one end to the other end in the dewatering path 23, and includes a bottom plate portion 84 a along the lower side of the storage portion 28. And a pair of side plate portions 84b erected upward on both side portions of the bottom plate portion 84a.

  A lower end of the first cleaning pipe 85 is connected to one end of the first cleaning nozzle 84, and a cleaning liquid discharge port 86 adjacent to the discharge unit 29 is formed downward at the other end of the first cleaning nozzle 84. The cleaning liquid discharge port 86 has the same width as the discharge part 29. Further, a cleaning liquid flow path 87 is formed between the bottom of the storage section 28 and the bottom plate 84 a of the first cleaning nozzle 84 to flow the cleaning liquid 81 from the first cleaning pipe 85 to the cleaning liquid discharge port 86.

  As shown in FIG. 20, the second cleaning device 83 includes a second cleaning nozzle 89 that discharges a cleaning liquid 81 from the back side of the paper making wire 18 in the dewatering path 23 toward the discharge unit 29, and a second cleaning nozzle 89. And a second cleaning pipe 90 for supplying the cleaning liquid 81 to the head. The second cleaning nozzle 89 has a cleaning liquid discharge port 91 at the tip, and the cleaning liquid discharge port 91 has the same width as the discharge unit 29.

  Further, as shown in FIG. 16, a cleaning liquid supply conduit 97 for supplying the cleaning liquid 81 from the inflow portion 27 to the storage portion 28 is provided, and the conduit switching device 98 composed of a valve or the like causes the inflow portion 27 to the storage portion 28. Can be switched to either the pulp suspension 12 or the cleaning liquid 81.

  A cleaning drainage discharge path 94 for discharging the cleaning drainage 93 after cleaning the inside of the headbox 19 into the white water tank 45 is connected to the head box 19. The cleaning drainage discharge path 94 includes a discharge pipe 95 and a discharge valve 96 provided in the discharge pipe 95. One end of the discharge pipe 95 is connected to the vertical plate member 33 of the head box 19 from the upstream side A, and communicates with the space between the vertical plate member 33 and the opening / closing member 31. The other end of the discharge pipe 95 is It is suspended in the white water tank 45.

Hereinafter, the operation of the above configuration will be described.
By supplying the cleaning liquid 81 from the first cleaning pipe 85 of the first cleaning device 82 to the first cleaning nozzle 84, the cleaning liquid 81 is guided by the first cleaning nozzle 84 and spreads in the width direction W. It flows through the flow path 87, cleans the lower surface of the bottom member 35, and is discharged from the cleaning liquid discharge port 86 toward the discharge portion 29. Further, by supplying the cleaning liquid 81 from the second cleaning tube 90 of the second cleaning device 83 to the second cleaning nozzle 89, the cleaning liquid 81 is supplied from the cleaning liquid discharge port 91 of the second cleaning nozzle 89 to the discharge unit 29. It is released toward. As a result, the vicinity of the discharge unit 29 is cleaned with the cleaning liquid 81.

In addition, the reservoir 28 is cleaned with the cleaning liquid 81 by switching the pipeline with the pipeline switching device 98 and supplying the cleaning liquid 81 from the inflow section 27 to the storage section 28.
When performing these cleaning operations, by opening the discharge valve 96, the cleaned cleaning liquid 93 flows from the inside of the head box 19 through the discharge pipe 95 and is discharged into the white water tank 45.

  As described above, the fibers attached to the head box 19 can be removed by washing the inside of the head box 19. At this time, the cleaning drainage 93 generated by the cleaning is discharged to the white water tank 45 so that the cleaning drainage 93 is not discharged onto the papermaking wire 18. It is possible to prevent clogging.

(Fifth embodiment)
The fifth embodiment of the present invention will be described below with reference to FIGS.
As shown in FIGS. 21 to 24, the head box 19 is detachably installed on an installation unit 100 formed above the papermaking wire 18. In the installation unit 100, a pair of front and rear support guide frames 101 that are opposed to each other on the upstream side A and the downstream side B are provided between the pair of side frames 24.

  Further, slide frames 102 projecting in the front-rear direction are provided across the entire width at both ends of the upstream side A and the downstream side B of the head box 19. The slide frame 102 is supported by the support guide frame 101 from below, and is slidable in the width direction W of the paper making wire 18 with respect to the support guide frame 101.

  In addition, a loading / unloading port 103 for loading and unloading the head box 19 is formed in the upper part of either the left or right side frame 24. As shown in FIGS. 21 to 23, the slide frame 102 is supported by the support guide frame 101 in a state where the head box 19 is pushed in and installed to the installation position E of the installation unit 100. A handle 109 for pushing and pulling the head box 19 in the loading / unloading direction F is provided on one side guide member 32 a of the head box 19.

  As shown in FIGS. 22 and 25, the upstream side of the first inflow portion 27 a and the second inflow portion 27 b is combined into a single inflow tube 104, and the inflow tube 104 and the deinking device 3 are connected to each other. A downstream end portion of the connected supply pipeline 26 is detachably connected through a joint portion 105. As shown in FIG. 26, the joint portion 105 includes a male portion 106 provided in the inflow pipe 104 and a female portion 107 provided in the supply conduit 26. Note that the male part 106 is detachable with respect to the female part 107 in the insertion / removal direction F of the head box 19. An O-ring 108 (an example of a seal member) that seals between the male part 106 and the female part 107 is provided on the outer periphery of the male part 106. As shown in FIG. 22, in the state where the head box 19 is pushed into the installation position E and installed, the male part 106 is fitted into the female part 107, whereby the inflow pipe 104 and the supply pipe line 26 are connected to each other. Connection is made via the unit 105.

  As shown in FIGS. 22 and 25, the papermaking apparatus 4 is provided with a connector 110 for supplying driving electric power to the motor 73. As shown in FIG. 26, the connector 110 includes a male part 111 provided on the other side guide member 32b of the head box 19 and a female part 112 provided on either the left or right side frame 24. ing. It should be noted that the male part 111 can be inserted into and removed from the female part 112 in the direction F of the head box 19 in and out. As shown in FIG. 22, in a state where the head box 19 is pushed into the installation position E and installed, the male part 111 is inserted into the female part 112 and electrically connected.

  A plate-like end frame 113 provided between the front end portions of both side frames 24 is provided with a lock device 114 that fixes the head box 19 to the installation position E. As shown in FIGS. 27 to 30, the lock device 114 includes a lock member 115 that can be raised and lowered, an operation plate 116 that raises and lowers the lock member 115, and a tension spring 117 that biases the lock member 115 upward, that is, in the lock direction. (An example of an urging unit) and a holding cover 118.

  The lock member 115 has an upper protrusion 115a, and as the lock member 115 is raised, the upper protrusion 115a is located above the upper surface of one of the support guide frames 101 as shown in FIGS. Project to the locking position G. As the lock member 115 is lowered, the upper projecting piece 115a is retracted to the unlock position H below the upper surface of the one support guide frame 101 as shown in FIGS. The one supporting guide frame 101 is formed with a penetrating portion 120 penetrating in the vertical direction, and the upper projecting piece 115a moves up and down to the lock position G and the unlocking position H through the penetrating portion 120. In addition, an inclined portion 115b is formed at the upper end of the upper protruding piece 115a. The inclined portion 115b is inclined upward toward the pushing direction side for pushing the head box 19 inward.

  The operation plate 116 is held by the holding cover 118 so as to be movable in the same movement direction F as the loading / unloading direction F, and as shown in FIG. 29, a lock switching position I for projecting the upper protrusion 115a to the lock position G, As shown in FIG. 30, it is possible to switch to the unlocking switching position J where the upper protruding piece 115a is retracted to the unlocking position H. The tension spring 117 urges the operation plate 116 from the lock release switching position J toward the lock switching position I.

  An operation portion 119 provided at the tip of the operation plate 116 is exposed to the outside of one side frame 24. The lock member 115 is located between the operation plate 116 and the holding cover 118 and is moved up and down in conjunction with the operation plate 116 via the interlocking means 126.

  The interlocking means 126 includes a plurality of guide pins 121 provided in the lock member 115 and a plurality of guide holes 122 formed in the operation plate 116. Each guide pin 121 is inserted into each guide hole 122. Each guide hole 122 is a long hole that is long in the moving direction F of the operation plate 116, and is inclined upward toward the back side from the lock switching position I to the lock release switching position J.

  The holding cover 118 is provided with positioning support pins 123 for positioning (restraining) the lock member 115 in the moving direction F of the operation plate 116 and supporting the operation plate 116. The positioning support pin 123 is inserted into a long hole 124 that is long in the vertical direction formed in the lock member 115, and a distal end portion is inserted into a long hole 125 that is long in the moving direction F formed in the operation plate 116.

Hereinafter, the operation of the above configuration will be described.
When removing the head box 19 from the installation part 100, first, as shown in FIG. 28B and FIG. 30, the operation part 119 is pushed back with a finger against the urging force of the tension spring 117, and the operation plate 116 is pressed. Is moved from the lock switching position I to the lock release switching position J. As a result, the guide pin 121 is guided and lowered from the upper end to the lower end of the guide hole 122, and the lock member 115 is lowered in conjunction with this, and the upper protrusion 115a is moved from the lock position G to the lock release position H. It descends and retreats below the upper surface of the support guide frame 101.

  In this state, as shown in FIG. 24, by pulling the head box 19 forward using the handle 109, the slide frame 102 slides on the support guide frame 101, and the head box 19 moves outside the installation unit 100. Is pulled out. At this time, as shown in FIGS. 25 and 26, the male portion 106 is removed from the female portion 107 in the joint portion 105, so that the inflow pipe 104 and the supply conduit 26 are separated. In the connector 110, the male part 111 is removed from the female part 112. As a result, the head box 19 can be removed for easy cleaning and maintenance.

  When the finger is removed from the operation portion 119, the operation plate 116 is moved from the unlocking switching position J to the locking switching position I by the urging force of the tension spring 117, as shown in FIGS. The guide pin 121 is guided from the lower end portion of the guide hole 122 to the upper end portion and rises. In conjunction with this, the lock member 115 is raised, and the upper protrusion 115a is raised from the unlock position H to the lock position G. , Projecting upward from the upper surface of the support guide frame 101.

  When the head box 19 is installed on the installation unit 100, the head box 19 is inserted between the both support guide frames 101, the slide frame 102 is placed on the support guide frame 101, and the head box 19 is pushed back to the installation position E. .

  At this time, one slide frame 102 of the head box 19 comes into contact with the inclined portion 115b of the upper protruding piece 115a protruding to the locking position G, thereby generating a downward pressing force on the upper protruding piece 115a, and the locking member. 115 is lowered, and the upper projecting piece 115 a is retracted from the lock position G to the lock release position H.

  When the head box 19 reaches the installation position E and the slide frame 102 passes above the upper projecting piece 115a, the urging force of the tension spring 117, as shown by the solid lines in FIGS. The operation plate 116 moves from the unlocking switching position J to the locking switching position I, the guide pin 121 is guided from the lower end portion of the guide hole 122 to the upper end portion, and is raised, and the lock member 115 is raised in conjunction with this, The upper protrusion 115a rises from the unlock position H to the lock position G and protrudes upward from the upper surface of the support guide frame 101.

  As a result, as shown in FIG. 28A, the end of one slide frame 102 is locked to the upper protruding piece 115a from the pulling direction of the head box 19, so that the head box 19 is fixed to the installation position E, Pulling out the head box 19 is prevented.

  At this time, as shown in FIG. 22, since the male portion 106 of the joint portion 105 is fitted into the female portion 107, the inflow pipe 104 and the supply conduit 26 are connected via the joint portion 105. Further, since the male part 111 of the connector 110 is inserted into the female part 112, the power source side of the paper making apparatus 4 and the motor 73 are electrically connected. Accordingly, the head box 19 can be easily attached, and the paper making apparatus 4 can be operated to make paper.

  In the fifth embodiment, the head box 19 described in the second embodiment is detachable from the installation unit 100. Similarly, the head box 19 described in the first, third, and fourth embodiments is described. The head box 19 may be detachable from the installation unit 100.

  In each of the above embodiments, as shown in FIG. 4, the paper making wire 18 is gently inclined so as to rise upward from the upstream side A to the downstream side B in the dewatering path 23. You may level without making it.

DESCRIPTION OF SYMBOLS 1 Used paper reproduction processing apparatus 4 Paper making apparatus 7 Used paper 9 Pulper apparatus 12 Pulp suspension 18 Paper making wire 19 Head box 27, 27a, 27b Inflow part 28 Reserving part 29 Discharge part 30 Discharge flow path 31 Opening / closing member 41 Gap 43 Guide member 44 Filtrate 45 White water tank (storage means)
65 Partition plates 66a and 66b Partition chambers 68a and 68b Papermaking area 69 Partition member 93 Cleaning drainage 94 Cleaning drainage discharge path 100 Installation part B Downstream side C Partitioning position D Retraction position O Opening direction S Closing direction W Width direction

Claims (12)

A head box for supplying a pulp suspension containing fibers onto a papermaking wire,
A storage part for temporarily storing the pulp suspension flowing in from the inflow part of the pulp suspension, a discharge part for discharging the pulp suspension of the storage part onto the papermaking wire, and a discharge part from the lower part of the storage part to the discharge part a discharge passage leading, and a closing member for opening and closing the discharge flow path was closed,
The opening / closing member is swingable around a swing center provided above the storage portion,
The open / close member is pushed in the opening direction to open the discharge channel by receiving the head pressure of the pulp suspension in the storage unit, and forms a gap in the discharge channel that connects the storage unit and the discharge unit. Characteristic head box. A head box for supplying a pulp suspension containing fibers onto a papermaking wire,
A storage part for temporarily storing the pulp suspension flowing in from the inflow part of the pulp suspension, a discharge part for discharging the pulp suspension of the storage part onto the papermaking wire, and a discharge part from the lower part of the storage part to the discharge part A discharge flow path, and an opening / closing member that opens and closes the discharge flow path,
The head box , wherein the opening / closing member is urged by its own weight in a closing direction for closing the discharge passage . A head box for supplying a pulp suspension containing fibers onto a papermaking wire,
A storage part for temporarily storing the pulp suspension flowing in from the inflow part of the pulp suspension, a discharge part for discharging the pulp suspension of the storage part onto the papermaking wire, and a discharge part from the lower part of the storage part to the discharge part A discharge flow path, and an opening / closing member that opens and closes the discharge flow path,
The opening / closing member reaches the discharge channel through the inside of the storage part, and opens and closes the discharge channel by vibrating . A head box for supplying a pulp suspension containing fibers onto a papermaking wire,
A storage part for temporarily storing the pulp suspension flowing in from the inflow part of the pulp suspension, a discharge part for discharging the pulp suspension of the storage part onto the papermaking wire, and a discharge part from the lower part of the storage part to the discharge part A head box comprising: a discharge flow path to be opened; and an open / close member that opens and closes the discharge flow path and stirs the pulp suspension in the storage section by vibration in the open / close direction . The head box according to any one of claims 1 to 4, wherein a bottom surface of the storage part is inclined downward toward the discharge channel . 6. A guide member for guiding a pulp suspension discharged from the discharge portion onto the paper making wire to a downstream side in the moving direction of the paper making wire is provided in the discharge portion. The head box according to claim 1 . The inside of the storage unit is divided into a plurality of compartments in the width direction by a partition plate,
The inflow part of the pulp suspension is provided corresponding to each compartment,
On the downstream side of the discharge unit, a partition member that partitions the pulp suspension discharged from the discharge unit onto the papermaking wire into a plurality of papermaking regions in the width direction is provided corresponding to the partition plate,
The head box according to any one of claims 1 to 6, wherein the partition member is freely movable between a partition position in sliding contact with the paper making wire and a retreat position spaced upward from the paper making wire. . A papermaking apparatus comprising a head box for supplying a pulp suspension containing fibers onto a papermaking wire ,
The head box has a storage part for temporarily storing the pulp suspension flowing in from the inflow part of the pulp suspension, a discharge part for discharging the pulp suspension in the storage part onto the papermaking wire, and a lower part of the storage part. A discharge passage extending from the discharge portion to the discharge portion, and an opening / closing member for opening and closing the discharge passage,
A storage means for storing the filtrate that has passed through the papermaking wire is provided below the papermaking wire,
A papermaking apparatus, wherein a cleaning drainage discharge path for discharging cleaning drainage liquid after cleaning the inside of the headbox to a storage means is connected to the headbox. A papermaking apparatus comprising a head box for supplying a pulp suspension containing fibers onto a papermaking wire,
A storage means for storing the filtrate that has passed through the papermaking wire is provided below the papermaking wire,
A papermaking apparatus, wherein a cleaning drainage discharge path for discharging cleaning drainage liquid after cleaning the inside of the headbox to a storage means is connected to the headbox. Slide frames are provided at both ends of the head box for supplying pulp suspension containing fibers onto the papermaking wire,
A support guide frame is provided on the installation part above the papermaking wire,
A papermaking apparatus, wherein a slide box is supported by a support guide frame and slides with respect to the support guide frame, whereby the head box is detachably installed on an installation part above the papermaking wire. 10. The papermaking apparatus according to claim 8 or 9, wherein the headbox is detachably installed on an installation part above a papermaking wire for papermaking the pulp suspension. A used paper recycling apparatus comprising the papermaking apparatus according to any one of claims 8 to 11,
A used paper recycling apparatus comprising a pulper device that disaggregates used paper to produce a pulp suspension, and makes the pulp suspension produced by the pulper device using a papermaking device.

Images