JP2016084551A - Wet web conveyance apparatus, papermaking apparatus, and used paper regenerating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wet web conveyance apparatus, a papermaking apparatus and a used paper regenerating apparatus capable of suppressing operation cost without increasing the size of the apparatus.SOLUTION: The wet web conveyance apparatus comprises: an endless conveyor belt 47 for conveying a wet web; an endless sandwiching belt 48 that sandwiches the wet web between the same and the conveyor belt 47 while traveling; and a deposit holding member 68 that holds a deposit transferred, by contacting an inner peripheral surface and/or an outer peripheral surface of at least either one belt of the conveyor belt 47 and the sandwiching belt 48, from the belt. In the papermaking apparatus S, the deposit holding member 68 is arranged to face a wet web conveyance surface of the belt.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a wet paper web transfer device, a paper making device, and a used paper recycling processing device.

Conventionally, a mechanism for removing paper dust and the like adhering to a canvas has been installed in a dry part of a papermaking apparatus. Patent Document 1 below discloses a technology relating to a canvas cleaning mechanism including a brush body for rubbing the surface of the canvas and an air blowing means for blowing peeling air onto the surface of the canvas.

Japanese Patent No. 5280259

However, in the apparatus described in Patent Document 1, air is blown onto the canvas by the air blowing means, and the adhering material such as paper powder peeled off from the canvas is sucked and collected by the suction means. Providing such suction means increases the size of the apparatus and increases the cost required for suction.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems, and to provide a wet paper web transfer device, a paper making device, and a used paper recycling processing device capable of suppressing the operation cost without increasing the size of the device.

  In order to achieve the above object, a wet paper web transfer device according to the present invention includes an endless transport belt that transports wet paper and an endless sandwich that travels with the wet paper sandwiched between the transport belts. And a deposit holding member that holds deposits transferred from the belt by contacting the inner circumferential surface and / or outer circumferential surface of at least one of the conveyor belt and the clamping belt. .

Moreover, in the said structure, an adhering matter holding member is opposingly arranged by the wet paper web conveyance surface of a belt.

And in each said structure, a contact part is opposingly arranged by the wet paper web conveyance surface of a belt.

Furthermore, in each said structure, the deposit | attachment holding member is formed in the sheet form.

Furthermore, in each said structure, the deposit | attachment holding member is comprised with a nonwoven fabric.

Further, in each of the above configurations, a drying unit that dries the wet paper transported by the transport belt is provided.

Furthermore, a papermaking apparatus according to the present invention includes a wet paper web forming unit that forms wet paper, and a wet paper web transport device configured as described above that transports the wet paper web formed by the wet paper web forming unit.

Furthermore, the used paper recycling apparatus according to the present invention includes a recycled pulp manufacturing unit that disaggregates used paper to produce a pulp suspension, and the paper making apparatus configured as described above.

According to the present invention, the deposit holding member that holds the deposit transferred from the belt by contacting the inner circumferential surface and / or the outer circumferential surface of at least one of the conveying belt and the clamping belt; Therefore, the deposit transferred from the belt by the contact of the deposit holding member is held by the deposit holding member. Therefore, deposits can be removed from the belt without increasing the size of the apparatus, and the operating cost can be suppressed.

Further, when the adhering substance holding member is disposed to face the wet paper web transport surface of the belt, it can efficiently remove fibers remaining on the wet paper web transport surface of the belt, scraps of recycled paper, and the like.

And when the deposit | attachment holding member is formed in the sheet form, the space for installing an deposit | attachment holding member may be small.

Furthermore, when the adhered material holding member is made of a nonwoven fabric, the surface of the uneven nonwoven fabric can be brought into contact with the belt, and the adhered material can be easily entangled and retained from the belt.

  Further, when a drying unit that dries the wet paper transported by the transport belt is provided, the wet paper is sandwiched between the transport belt that transports the wet paper or the transport belt to dry the wet paper by the drying unit. Deposits on at least one of the clamping belts can be efficiently removed.

Further, the paper making apparatus of the present invention includes a wet paper web forming unit that forms wet paper and a transport belt that transports the wet paper formed by the wet paper web forming unit, and is at least one of the transport belt and the clamping belt. Since it has a deposit holding member that holds deposits transferred from the belt by contacting the inner and / or outer peripheral surface of the belt, the deposits can be removed from the belt without increasing the size of the apparatus. can do.

Furthermore, the used paper recycling apparatus of the present invention includes a recycled pulp manufacturing unit that disaggregates used paper to produce a pulp suspension, a wet paper forming unit that forms wet paper, and a wet paper formed by the wet paper forming unit. A conveying belt for conveying, and an adhering matter holding member for holding adhering matter transferred from the belt by contacting the inner peripheral surface and / or outer peripheral surface of at least one of the conveying belt and the clamping belt Therefore, the deposits can be removed from the belt without increasing the size of the apparatus.

1 is a schematic configuration diagram of a used paper recycling processing apparatus according to an embodiment of the present invention. It is a longitudinal cross-sectional view which shows schematic structure of the papermaking apparatus of the said used paper reproduction | regeneration processing apparatus. It is the elements on larger scale which show the structure of the deposit holding | maintenance part periphery of the said papermaking apparatus. It is a perspective view of the said deposit | attachment holding | maintenance part. It is a longitudinal cross-sectional view which shows schematic structure of the papermaking apparatus which concerns on other embodiment of this invention.

(First embodiment)
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 processing apparatus including a wet paper web transport apparatus according to the first embodiment. In FIG. 1, a used paper recycling apparatus 100 includes a recycled pulp manufacturing unit 1, a deinking unit 2, a paper making unit 3, a finishing unit 4, and a control unit 8 that controls each unit.

In the following description, the wet paper drying apparatus of the present invention is used for the paper making unit 3 of the used paper recycling apparatus 100 for producing the recycled paper 7 using the used paper 10 as a raw material, but is not necessarily limited thereto. Alternatively, it may be used in a paper making section of a paper making apparatus using other pulp raw materials such as wood.

The recycled pulp manufacturing unit 1 disaggregates the waste paper 10 to manufacture a pulp suspension. The deinking unit 2 deinks the pulp suspension manufactured in the recycled pulp manufacturing unit 1. The paper making unit 3 forms a wet paper by making paper from the deinked pulp suspension obtained in the deinking unit 2, and dehydrates and dries the obtained wet paper. The finishing section 4 finishes by cutting the recycled paper 7 before finishing obtained in the paper making section 3 to obtain a standard size recycled paper 7. The control unit 8 controls the operation of the used paper recycling processing apparatus 100 as a whole. The regenerated pulp manufacturing unit 1 and the deinking unit 2 can use known regenerated pulp manufacturing devices and deinking devices, respectively.

FIG. 2 is a longitudinal sectional view of the paper making apparatus S constituting the paper making unit 3. In the following, the right side of the paper making apparatus S shown in FIG. 2 will be described as “front side”, the left side as “rear side”, the front side of the paper surface of FIG. 2 as “right side”, and the back side of the paper surface as “left side”. To do. The paper making unit 3 includes a wet paper web forming unit 11, a dehydrating unit 14, and a drying unit 15 housed in a housing 41. A pair of left and right side plates 37 are disposed in the housing 41, and the side plates 37 pivotally support most of the rollers constituting each part.

The wet paper web forming unit 11 forms wet paper. The wet paper web forming unit 11 includes a head box 12 and a wire unit 13. The head box 12 is for uniformly supplying the pulp suspension after deinking onto the papermaking wire 23. The head suspension 12 stores the pulp suspension and the pulp suspension stored in the storage unit 18. It has the outflow part 19 which makes a liquid flow out on the papermaking wire 23, and the inflow part 20 of the pulp suspension formed in the bottom part of the storage part 18. As shown in FIG.

The wire unit 13 includes an endless paper-making wire 23 that is stretched over a plurality of rollers 24. Below the forward path of the papermaking wire 23, a plurality of vertical plates 26 for draining the pulp suspension are arranged at predetermined intervals in the traveling direction of the papermaking wire 23. Are arranged so as to be in sliding contact with the lower surface of the papermaking wire 23 in a direction crossing the traveling direction. Thereby, the vertical plate 26 guides the white water flowing down from the mesh of the papermaking wire 23 downward.

A water receiving portion 27 is provided below the vertical plate 26 for receiving white water flowing directly from the vertical plate 26 or from the mesh of the papermaking wire 23. The water receiving unit 27 is connected to a white water tank 29 installed below by piping, guides and the like (not shown). The white water tank 29 includes a pipe and a pump (not shown) for sending white water stored therein to the regenerated pulp manufacturing unit 1 and the deinking unit 2, and is configured so that the white water collected in the water receiving unit 27 can be reused. .

The dewatering unit 14 includes a wet paper web dewatering device D. The wet paper web dewatering device D includes a dewatering belt 31, a plurality of rollers 32, and a dewatering roller pair 43. The dehydrating belt 31 constitutes an endless conveying belt that conveys wet paper in a wet state. The dehydrating belt 31 is formed of a water-absorbing material such as felt or blanket, and is stretched between a plurality of rollers 32. The dewatering belt 31 is in contact with the paper making wire 23 disposed below and the drying belt 47 of the drying unit 15 disposed above at predetermined positions, respectively, and the wet paper is sequentially transferred to the contact portion. It is supposed to be.

The dewatering roller pair 43 is installed at a contact portion between the dewatering belt 31 and the drying belt 47. The dewatering roller pair 43 holds the dewatering belt 31 and the drying belt 47 in the front and back directions, and transfers the wet paper from the dewatering belt 31 to the drying belt 47 while pressing and dewatering the wet paper between both belts. Is. The pair of dewatering rollers 43 is a first dewatering roller 45 installed inside the dewatering belt 31 and a second dewatering roller installed inside the drying belt 47 and at a position facing the upper side of the first dewatering roller 45. A roller 46.

The second dehydrating roller 46 is connected to a driving unit (not shown), and the second dehydrating roller 46 is rotationally driven by driving of the driving unit. The dehydrating belt 31 and the drying belt 47 are caused to run by the rotation of the second dehydrating roller 46, and the first dehydrating roller is brought into contact with the second dehydrating roller 46 at a predetermined pressure via the dehydrating belt 31 and the drying belt 47. The roller 45 is driven to rotate.

The drying unit 15 includes a wet paper drying device V. The wet paper drying device V includes a drying belt 47, a clamping belt 48, a drying means 44, a plurality of rollers 51, a leading edge portion 52, a deposit holding portion 53, 63, a calendar portion 54, and a guide 55. It has. The drying belt 47 constitutes an endless conveyance belt that conveys wet paper in a wet state after dehydration in the dehydration unit 14. The drying belt 47 is stretched between the drying drum 50 and the plurality of rollers 51 constituting the drying unit 44. The sandwiching belt 48 travels while sandwiching the wet paper with the conveying belt. The clamping belt 48 is formed in an endless shape and is stretched over the drying drum 50 and the plurality of rollers 49.

The drying belt 47 and the sandwiching belt 48 are overlapped at a predetermined location including a range wound around the drying drum 50 and run in a wet state between the drying belt 47 and the sandwiching belt 48. Hold a certain wet paper and carry it. The material of the drying belt 47 and the clamping belt is not particularly limited, and for example, metal, chemical fibers such as polyester and polyphenylene sulfide, and natural fibers such as hemp and cotton are used. The pinching belt 48 is preferably formed of a woven fabric in which warp and weft are woven, from the viewpoint of high wet paper drying efficiency.

The drying means 44 includes a drying drum 50. The drying drum 50 includes a cylindrical body 58 formed in a hollow cylindrical shape, and the left and right side surfaces orthogonal to the cylindrical center of the cylindrical body 58 are closed by a disc-shaped lid body 59. The cylinder 58 is rotatably supported by three support rollers 61. A heating means 62 is provided on the inner peripheral surface of the cylindrical body 58. The heating means 62 is composed of a heating element such as a silicon rubber heater that is soft and flexible and formed in a sheet shape, and the heating element is attached to the inner peripheral surface of the drying drum 50 over the entire circumference. It is worn.

As shown in FIG. 2, a temperature sensor 66 that detects the surface temperature of the cylinder 58 is provided on the front side of the drying drum 50. In the present embodiment, the temperature sensor 66 is configured to slidably contact the surface of the cylinder 58 and detect the temperature of the cylinder 58, but a non-contact sensor may be used for the cylinder 58.

The cylindrical body 58 is wound in a state in which a drying belt 47 and a sandwiching belt 48 are superimposed on a substantially semicircular portion on the rear side. The cylinder 58 is driven and rotated by driving the drying belt 47 and the clamping belt 48 by respective driving units (not shown).

The leading edge peeling portion 52 comes into contact with the drying belt 47 and peels the leading end portion of the wet paper from the drying belt 47. The tip removal portion 52 is installed at a position below the drying drum 50. The tip sharpening portion 52 includes a peeling plate 56 and a swinging portion 57. The peeling plate 56 is swung by the swinging portion 57 at a predetermined timing.

In this embodiment, the adhering substance holding portions 53 and 63 are in contact with the outer peripheral surface of the clamping belt 48 to transfer the adhering substance on the holding belt 48 and hold the adhering substance holding portion 53 for the holding belt 48 to hold. And an adhering matter holding part 63 for the drying belt 47 that contacts the outer peripheral surface of the drying belt 47 as a wet paper web transfer belt and holds the adhering matter transferred from the drying belt 47. ing. FIG. 3 is an enlarged view showing the configuration of the adhering substance holding portion 53 for the drying drum 50 and the clamping belt 48 and its surroundings, and FIG. 4 is an enlarged perspective view of the adhering substance holding portion 53 for the clamping belt 48. is there. As shown in FIGS. 3 and 4, the deposit holding part 53 includes an deposit holding member 76, a pressing support 77, and a fixing member 78.

A pressing support part 77 for pressing the deposit holding member 76 against the clamping belt 48 with a predetermined pressure, and a fixing member 78 for fixing the pressing support part 77 to the housing 41 are provided.

The deposit holding member 76 holds the deposit transferred from the clamping belt 48 by contacting the outer peripheral surface of the clamping belt 48. The deposit holding member 76 has a structure in which it is possible to hold the deposit on the surface and / or inside for a predetermined time by preventing the deposit from dropping or peeling off.

The adhering matter holding member 76 is disposed so as to face a predetermined portion of the outer peripheral surface as a wet paper web transfer surface of the nipping belt 48 for nipping and carrying the wet paper web with the drying belt 47. The shape of the deposit holding member 76 may be any of a flat plate shape, a rectangular parallelepiped shape, a columnar shape, a prismatic shape, a rod shape, a spherical shape, a sheet shape, and the like, but is not particularly limited, and is formed into a sheet shape having a predetermined thickness. Is preferred. When the deposit holding member 76 is formed in a sheet shape, there is an advantage that a space for installing the deposit holding member can be small. A width direction length W of the attached matter holding member 76 is substantially the same as that of the clamping belt 48. On the other hand, the length L of the portion 80 in contact with the clamping belt 48 of the deposit holding member 76 in the traveling direction of the clamping belt 48 is a predetermined length capable of holding the deposit transferred from the clamping belt 48. Have.

The thickness T of the deposit holding member 76 is preferably about 0.05 mm to 100 mm, more preferably 0.1 mm to 50 mm, and still more preferably 0.5 mm to 30 mm. When the thickness of the deposit holding member 76 is thicker than 0.05 mm, the deposit transferred from the clamping belt 48 can be held more. When the thickness of the deposit holding member 76 is less than 100 mm, the installation space for the deposit holding member 76 can be reduced.

As the deposit holding member 76, for example, a nonwoven fabric, a woven fabric, a knitted fabric, a felt, a sponge, a sponge, an adhesive, a porous material, or the like can be used. As the material of the deposit holding member 76, synthetic resin, natural resin, synthetic rubber, natural rubber, synthetic fiber, natural fiber, glass fiber, feathers, wool, absorbent cotton, cotton, or the like can be used. Among these, the deposit holding member 76 is preferably made of a nonwoven fabric. When the adhering matter holding member 76 is composed of a nonwoven fabric, the surface of the uneven nonwoven fabric can be brought into contact with the sandwiching belt 48 and the adhering matter can be easily entangled and held from the sandwiching belt 48.

The pressing support portion 77 is formed in a substantially inverted U shape in a longitudinal sectional view in which a thin plate is bent twice. An upper portion of the pressing support portion 77 is provided with a fixing portion 83 that extends in the width direction and fixes a predetermined range in the width direction of the upper end of the attached matter holding member 76. An upper end portion of the adhering matter holding member 76 is sandwiched between the pressing plates 84 and fixed to the fixing portion 83 by a plurality of screws 85 installed at predetermined intervals.

A pressing portion 87 is provided on the front side of the pressing support portion 77 to press the deposit holding member 76 against the clamping belt 48 with a predetermined pressure. The inclination angle θ of the pressing portion 87 with respect to the vertical direction is formed so that the inclination angle of the clamping belt 48 with which the attached matter holding member 76 contacts is the same. Further, the pressing portion 87 supports the deposit holding member 76, so that the position of the pressing support member 77 is pressed by a position adjusting unit 91 which will be described later so that the surface of the deposit holding member 76 is pressed against the clamping belt 48 with a predetermined pressure. The height position is adjusted.

As shown in FIG. 3, the lower end portion of the pressing portion 87 is formed with a curved portion 88 that is curved toward the rear side. By forming the curved portion 88 in this way, it is possible to prevent the clamping belt 48 and the deposit holding member 76 from being damaged by the cut surface of the lower end edge of the pressing portion 87.

A vertical support portion 90 extending in the vertical direction is provided at the rear portion of the pressing support portion 77. The vertical support portion 90 is provided with a position adjusting portion 91 for aligning the pressing support portion 77 with respect to the clamping belt 48. The position adjusting portion 91 is formed in the vicinity of both ends in the width direction of the pressing support portion 77. The pressing support portion 77 includes a long hole 93, a round hole 94, and a set screw 95. The long hole 93 is formed to be long vertically, and the upper end portion of the long hole 93 communicates with the round hole 94. The hole diameter of the round hole 94 is formed larger than the length of the long hole 93 in the width direction.

The male screw portion 97 of the set screw 95 is inserted into the elongated hole 93 and screwed into the screw hole 98 formed in the fixing member 78. At that time, in order to adjust the height position of the pressing support portion 77, the pressing support portion 77 is moved up and down with respect to the fixing member 78. Then, the elongated hole 93 moves up and down with respect to the male screw portion 97 of the set screw 95 whose tip is inserted into the screw hole 98. As a result, the position of the pressing support member 77 can be adjusted. The male screw portion 97 of the set screw 95 enters the screw hole 98 at a position where the deposit holding member 76 properly contacts the clamping belt 48 and the deposit on the clamping belt 48 is efficiently transferred to the deposit holding member 76. The vertical support portion 90 is fixed to the fixing member 78 by screwing.

The fixing member 78 is fixed to a pair of left and right frames 42 extending up and down forming the rear side surface of the paper making apparatus S. The fixing member 78 is formed with screw holes 98 in the vicinity of both end portions in the width direction and at positions opposed to the round holes 94 to which the male screw portions 97 of the pair of set screws 95 are screwed. Yes.

The deposit holding part 63 for the drying belt 47 is installed below the front roller 51 as shown in FIG. The deposit holding member 68 constituting the deposit holding section 63 is provided with a contact portion 64 that contacts the drying belt 47. The contact portion 64 is a portion where the recycled paper is not carried on either the wet paper or the recycled paper after drying the wet paper after the recycled paper is peeled off from the wet paper carrying surface of the drying belt 47 at the guide 55 installation position. It contacts the outer peripheral surface of the drying belt 47.

Further, the deposit holding part 63 for the drying belt 47 includes a pressing unit 65 that presses the deposit holding member 68 against the drying belt 47. The pressing portion 65 is formed to be inclined so as to have the same angle as the installation angle of the drying belt 47 at the location where the contact portion 64 contacts. In FIG. 2, the pressing portion 65 shows a case where the inclination angle from the vertical direction is about 45 degrees. Thus, the pressing portion 63 for pressing the deposit holding member 68 against the drying belt 47 has a pressing portion for pressing the deposit holding member 76 against the clamping belt 48 with an inclination angle from the vertical direction. The inclination angle θ is greater than 87. The other configuration of the deposit holder 63 for the drying belt 47 is substantially the same as that of the deposit holder 53 for the clamping belt 48, and thus detailed description thereof is omitted.

The calendar unit 54 is provided at a position slightly below the rear side of the drying drum 50. The calendar unit 54 is installed to face the outer peripheral surface of the drying drum 50. The calendar unit 54 includes a press roller 73 that sandwiches and transports the wet paper with the drying belt 47. The press roller 73 is configured to be displaceable between a press position that contacts the wet paper and a retracted position that is separated from the wet paper.

The guide 55 supports the lower side of the dried recycled paper conveyed by the drying belt 47 and guides the recycled paper to the finish 4.

(Finish)
The finishing section 4 shown in FIG. 1 includes a cutting blade (not shown) for cutting a strip-shaped recycled paper into a predetermined sheet size. The cutting blade includes a pair of left and right slitters and a cutter. The slitter is composed of a round blade. The cutter is constituted by a pair of upper and lower straight blades extending along the width direction. Below the cutting blade, an end material recovery box (not shown) for recovering the end material generated by the cutting is installed.

(Function)
The operation of the used paper recycling apparatus 100 according to this embodiment will be described below. First, a pulp suspension is manufactured by stirring a predetermined amount of used paper 10 together with a predetermined amount of water in the recycled pulp manufacturing unit 1 for a predetermined time. Next, the obtained pulp suspension is sent to the deinking section 2, and deinking processing is performed to obtain a pulp suspension after deinking. The pulp suspension after deinking is hydrated in the deinking section 2 or in the middle of the distribution path from the deinking section 2 to the papermaking section 3 to prepare a predetermined pulp concentration suitable for papermaking, and the papermaking section 3 To the head box 12.

In the head box 12, the pulp suspension flows from the inflow portion 20 into the storage portion 18, and flows out from the outflow portion 19 onto the papermaking wire 23. After the liquid suspension in the pulp suspension supplied onto the papermaking wire 23 passes through the mesh of the papermaking wire 23 and is guided to the lower water receiving portion 27 by the vertical plate 26 and received by the water receiving portion 27. The white water tank 29 is accommodated. The white water in the white water tank 29 is sent to the recycled pulp manufacturing unit 1, the deinking unit 2, etc. and reused. The recycled pulp remaining on the papermaking wire 23 forms a wet paper which is a fiber layer containing a relatively large amount of moisture.

When the wet paper on the paper making wire 23 reaches the contact portion 30 with the dewatering belt 31, the wet paper is transferred from the paper making wire 23 to the dewatering belt 31. The dehydrating belt 31 travels while carrying wet paper in a wet state. At the installation position of the dewatering roller pair 43, the wet paper web is sandwiched and pressed by the dewatering roller pair 43, dehydrated, and transferred to the drying belt 47.

The wet paper transferred from the dewatering belt 31 to the drying belt 47 is conveyed while being carried on the drying belt 47. When the leading end portion of the wet paper approaches the installation position of the leading end portion 52, the swinging portion 57 is driven by the control portion 8, and the peeling plate 56 swings counterclockwise as shown by a two-dot chain line in FIG. Move. Then, the front edge of the peeling plate 56 comes into contact with the drying belt 47, and the wet paper carried on the lower surface of the drying belt 47 is peeled off from the drying belt 47. As described above, after the leading end portion of the wet paper is peeled from the drying belt 47, the control unit 8 drives the swinging unit 57 again. Then, the peeling plate 56 is swung clockwise in FIG. 2 which is opposite to the previous one, and the peeling plate 56 is swung to a position where it does not contact the drying belt 47.

The control unit 8 moves the press roller 73 from the retracted position to the pressing position after the leading end portion of the wet paper peeled from the drying belt 47 passes through the calendar unit 54. Then, the wet paper is pressed against the drying belt 47 and the drying drum 50 by the press roller 73 and pressed. Thus, the flatness of the obtained recycled paper 7 is increased.

When the wet paper reaches the contact position between the drying belt 47 and the sandwiching belt 48, the wet paper is sandwiched between the drying belt 47 and the sandwiching belt 48. The wet paper is brought into contact with the drying drum 50 heated by the heating means 62 via the drying belt 47. As a result, the wet paper in a wet state is dried, and a band-like recycled paper 7 before finishing is obtained. The temperature of the drying drum 50 is detected by a temperature sensor 66 and is maintained at a predetermined temperature.

The unfinished belt-shaped recycled paper 7 obtained in the drying unit 15 is peeled off from the drying belt 47 and sent to the finish 4 while being guided by the guide 55. The belt-shaped recycled paper 7 sent to the finishing section 4 is cut into a predetermined sheet size by a cutting blade, and the recycled paper 7 is completed. At that time, the slitter cuts both ends in the width direction of the belt-shaped recycled paper along the longitudinal direction. In the cutter, the upper straight blade moves up and down relative to the lower straight blade, and cuts the recycled paper along the width direction. The edge material of the recycled paper 7 cut by the cutting blade is collected in the edge material collection box. As shown in FIG. 1, the end material in the end material recovery box is returned to the recycled pulp manufacturing unit 1 and is used again for the manufacture of the recycled paper 7 as a waste paper material.

In such a series of steps, small pieces of end material, paper dust, fibers, dust, and the like may adhere to the drying belt 47 and the sandwiching belt 48. For example, when cutting with a slitter or a cutter at the finishing section 4, small pieces smaller than a predetermined value among the end material cut out from the belt-shaped recycled paper 7 do not fall well into the end material recovery box, and the drying belt 47 or It may adhere to the clamping belt 48. When fibers are clogged in the dewatering belt 31, the fibers jammed in the dewatering belt 31 are peeled off at a certain timing and attached to the subsequent wet paper, and the wet paper is then dried by the drying belt 47. Such a fiber may adhere to the drying belt 47 when it is transferred. When the wet paper is sandwiched between the sandwiching belts 48, such fibers may adhere to the sandwiching belt 48. Further, paper dust or dust floating in the housing 41 may adhere to the drying belt 47 or the sandwiching belt 48.

Such small pieces of end material, paper powder, fibers, dust, and the like become deposits on the drying belt 47 and the sandwiching belt 48. If the deposits are left without being removed, the quality of the recycled paper 7 obtained by reattaching to the subsequent wet paper before drying is deteriorated. Therefore, in this embodiment, the deposits of the drying belt 47 and the clamping belt 48 are transferred from these belts 47 and 48 and held by the deposit holding parts 63 and 53. At that time, the adhering matter holding members 68 and 76 come into contact with the traveling drying belt 47 and the sandwiching belt 48 to entangle the adhering matter. The adhering matter holding members 68 and 76 are pressed against the drying belt 47 and the clamping belt 48 by the pressing portions 65 and 87 with a predetermined pressing force. Thus, the deposits on the drying belt 47 and the clamping belt 48 are efficiently transferred to the deposit holding member 76.

Further, the deposit holding member 76 can transfer the deposit on the drying belt 47 or the sandwiching belt 48 and hold it on the surface or inside of the deposit holding members 68 and 76 as it is. The deposits held by the deposit holding members 68 and 76 are sucked and removed by a vacuum cleaner or the like during device maintenance every predetermined period. Thus, it is not necessary to provide a separate mechanism for collecting the deposits as in the prior art. Therefore, it can be manufactured at low cost by a simple mechanism. That is, conventionally, the deposits on the drying belt 47 and the clamping belt 48 are scraped off by a brush body and then dropped and collected, or the scraped deposits are sucked and collected by a suction means. However, in this embodiment, such a deposit recovery mechanism is not necessary.

Moreover, when the thickness of the deposit holding members 68 and 76 is larger than a predetermined value, the durability of the deposit holding members 68 and 76 can be improved, and more deposits can be held inside. Become. Therefore, it is possible to lengthen the period until the adhered deposits are removed from the deposit holding members 68 and 76, and the number of maintenance can be reduced.

Since the adhering matter holding members 76 and 68 are installed in the wet paper drying device V including the drying means 44 for drying the wet paper, the transport belt for transporting the wet paper to dry the wet paper by the drying means 44. As a result, it is possible to efficiently remove deposits on both of the drying belt 47 and the sandwiching belt 48 that sandwiches the wet paper with the conveying belt. Further, the adhering matter holding members 68 and 76 are disposed so as to face the wet paper web transport surfaces of the drying belt 47 and the sandwich belt 48, so that fibers and recycled paper remaining on the wet paper web surfaces of these belts 47 and 48 are disposed. It is possible to efficiently remove the end material.

Further, when the sandwiching belt 48 is formed of a woven fabric in which warp and weft are woven, the deposits on the sandwiching belt 48 can be removed very efficiently by the deposit holding member 76.

If the deposit holding members 68 and 76 deteriorate, wear, or are damaged due to long-term use or the like, the operator replaces the deposit holding member 76 with a new deposit holding member 76. Thereby, the transfer of the deposits from the belt and the ability to retain the deposits on the surface and inside can be recovered.

When exchanging the deposit holding members 68 and 76, the pressing support portion 77 is removed from the fixing member 97 while the deposit holding members 68 and 76 are fixed to the pressing support portion 77. At that time, the set screw 95 is loosened, and the pushing support portion 77 is moved downward while being guided by the elongated hole 91 through which the male screw portion 97 is inserted. When the set screw 95 reaches the position where the round hole 94 is formed, the operator pulls out the head of the set screw 95 from the round hole 94 while the distal end side of the male screw portion 97 is still screwed into the screw hole 98. Since the hole diameter of the round hole 94 is larger than the length of the long hole 93 in the width direction and larger than the head diameter of the set screw 95, the distal end side of the male screw portion 97 is still screwed into the screw hole 98. It is possible to remove the head of the set screw 95 from the round hole 94 while keeping together. In this way, the pressing support portion 77 can be easily detached from the fixing member 78.

Thereafter, the operator loosens and removes the screw 85, removes the presser plate 84, and removes the attached matter holding member 76 that has deteriorated, worn, or damaged from the fixing portion 83 of the pressing support portion 77. And it replaces | exchanges for another deposit | attachment holding member 68,76. The new adhering matter holding members 68 and 76 are fixed to the fixing portion 83 by the reverse operation to the above, and the pressing support portion 77 is fixed to the fixing member 97, whereby the replacement operation is completed. This makes it easier to replace the deposit holding members 68 and 76.

(Second Embodiment)
FIG. 5 is a longitudinal sectional view of a paper making apparatus Sa including a wet paper web transport apparatus according to the second embodiment. In the first embodiment, the adhering substance holding members 76 and 68 are installed in the wet paper drying apparatus V provided with the drying means 44 for drying the wet paper transported by the transport belt. In the embodiment, the deposit holding member 103 is installed in the dehydrating unit 14a. In FIG. 5, only the deposit holding part 53 for the sandwiching belt 48 is shown in the drying unit 15, but the deposit holding part 63 for the drying belt 47 may also be provided. In addition, it is possible to adopt a configuration in which no deposit holding part for both the drying belt 47 and the drying belt 47 is provided.

In the first embodiment, the dewatering belt 31 transports the wet paper as a single unit. In the second embodiment, the wet paper is transferred between the dewatering belt 31a and the dewatering belt 31a. An endless clamping belt 101 that runs while being clamped is provided. The adhering matter holding member 103 is in contact with the outer peripheral surface of the holding belt 101 and holds the adhering matter transferred from the holding belt 101.

The deposit holding member 103 is provided in the deposit holding section 102 of the dehydrating section 14a. The adhering matter holding member 103 is pressed against the portion extending in the vertical direction of the clamping belt 101 by the pressing portion 104 with a predetermined pressure. The pressing portion 104 of the attached matter holding portion 102 is formed and disposed so as to be the same as the vertical direction in which the holding belt 101 is installed.

As a result, the deposit holding member 103 is installed in the dewatering section 14a, contacts the outer peripheral surface of the nipping belt 101 that nipping and transporting the wet paper with the dewatering belt 31a, and is transferred from the nipping belt 101. Since the deposit holding member 103 that holds the kimono is provided, the deposit attached to the clamping belt 101 can be removed.

In the above embodiment, the adhering substance holding member 76 is in contact with the outer peripheral surface of the transport belt and the sandwiching belts 48 and 101. However, the present invention is not limited to this, and is not limited to the inner peripheral surface of the transport belt and / or sandwiching bell. The deposits may be transferred by contact. Moreover, although the case where it was set as the belt 47 for drying as a conveyance belt was shown, the belt for dehydration may be sufficient and the other belt which can convey a wet paper may be sufficient. Further, it is only necessary to provide an adhering substance holding member that contacts at least one of the conveying belt and the clamping belt, and the adhering substance holding member may be brought into contact with only one belt, and attached to three or more belts at the same time. The kimono holding member may be brought into contact.

Further, the adhering substance holding member 76 is disposed to face the wet paper web transport surface of the belt, but may be disposed to face the surface of the belt not carrying the wet paper web. Further, although the deinking unit 2 is provided in the used paper recycling apparatus 100, the deinking unit 2 may be omitted.

S, Sa Papermaking apparatus 1 Recycled pulp manufacturing section 11 Wet paper forming section 48, 101 Nipping belt 44 Drying means 68, 76, 103 Adhered matter holding member 100 Used paper regeneration processing apparatus

Claims (7)

An endless transport belt for transporting wet paper;
An endless pinching belt that runs with the wet paper pinched between the conveyor belt;
A wet paper web comprising a deposit holding member for holding deposits transferred from the belt by contacting the inner and / or outer circumferential surface of at least one of the conveyor belt and the clamping belt. Conveying device. The wet paper web transport device according to claim 1, wherein the deposit holding member is disposed to face the wet paper web transport surface of the belt. 3. The wet paper web transfer device according to claim 1, wherein the deposit holding member is formed in a sheet shape. The wet paper web transfer device according to any one of claims 1 to 3, wherein the deposit holding member is made of a nonwoven fabric. The wet paper web transfer device according to any one of claims 1 to 4, further comprising a drying unit that dries the wet paper web transported by the transport belt. A wet paper web forming section for forming the wet paper;
A papermaking apparatus comprising the wet paper web transfer device according to any one of claims 1 to 5, which transports the wet paper web formed by the wet paper web forming unit. A used paper recycling apparatus comprising a recycled pulp production unit that disaggregates used paper to produce a pulp suspension, and the paper making apparatus according to claim 6.

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