JP2017101363A - Deinking waste water treatment device and deinking treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deinking waste water treatment device and a deinking treatment device having a compact constitution capable of being mounted on a compact waste paper regeneration apparatus and also excellent in dehydration efficiency.SOLUTION: Provided is a device of subjecting deinking waste liquid including waste paper pulp to dehydration treatment, comprising: a spiral rotary part 606 tiltedly arranged at a rising gradient from the start edge side toward the end edge side and rotated around the shaft center; a casing 605 having water permeability and arranged along the shaft center around the spiral rotary part 606; and a pressing plate 617 confronted with the end edge of the spiral rotary part in the shaft center direction. The casing 605 includes a gravity dehydration part 615, and the end edge includes a compressive dehydration part 618.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technique for treating a deinking waste liquid generated in a deinking process of a pulp solution containing used paper pulp, and is a used paper recycling apparatus that can be installed in an office or the like where used paper is generated to regenerate the paper. Etc.

  Conventionally, for example, in Patent Document 1, as a method of separating solids from an aqueous suspension of a suspended substance containing a hydrophobic substance such as paper cellulose fiber and ink particles, a cationic polymer flocculant is added to the aqueous suspension. Are mixed to flocculate the suspended substance, and the flocculated suspension is mixed with an anionic colloidal substance to agglomerate the flocculated solid, and the suspension containing the agglomerated solid is contained. A method for subjecting the suspension to pressure filtration is described.

  Further, in Patent Document 2, a deinking tank that performs deinking by supplying bubbles from a bubble supply unit into a used paper pulp liquid obtained by breaking up used paper, and an overflow tank that receives bubbles overflowing from the deinking tank. And a drainage processing unit for processing the deinking drainage generated by the disappearance of bubbles, the draining processing unit adding a flocculant to the deinking drainage, and a flocculant adding unit A configuration is described in which a deinking effluent to which a flocculant is added is stored and a precipitation tank for precipitating agglomerates and an external discharge channel for discharging the supernatant liquid in the precipitation tank to the outside.

  Furthermore, in Patent Document 3, the surfactant solution is infiltrated into the waste paper introduced from the waste paper feeder and softened, and the surfactant solution is stirred in the defibration tank to soften the waste paper. A stirrer that defibrates into a fiber shape, a defibrated material conveying means that conveys defibrated waste paper that has been defibrated into a fiber shape in the defibrating tank above the water surface, and a water surface in the defibrating tank A defibrated material block forming means comprising a cylinder for press-molding a defibrated material that is placed at a high position and conveyed by the defibrated material conveying means into a block shape, and a defibrated material block forming means cylinder A defibrated material extruding means for extruding a defibrated material block that has extrusion blocks that can be advanced and retracted along the opening surface on one end side, press-formed by the defibrated material block forming means, and dehydrated, and defibrated material extruded The defibrated material is recovered by dropping the defibrated material blocks that are pushed out by the means. A chute for guiding the stage, the waste paper processing apparatus including the defibrated material recovery means for receiving the defibrated material blocks coming slide down the chute below is described.

Special table hei 06-509742 JP2011-226021 Japanese Patent No. 3268511

  In Patent Document 2, as a dehydration treatment of the deinking waste liquid, the deinking waste liquid is filtered with a mesh belt, and the residue on the mesh belt is compressed with a compression roller or the like. However, in the squeezing by the squeezing roller, the moisture content of the dehydrated waste is about 90%, and a large amount of moisture remains. For this reason, labor and expense were required for the operation | work which takes out and processes a waste material.

  Moreover, in patent document 3, the screw conveyor arrange | positioned rotatably in a cylinder and a cylinder is used as a defibrated material conveyance means. However, in this configuration, even if the defibrated material suspension flows into the cylinder, it is not immediately dehydrated, but is transported through the cylinder under the liquid level in the tank as the suspension, and on the liquid level. The liquid phase is discharged from the small hole of the cylindrical body and dehydration proceeds. Further, the defibrated material is fed into the defibrated material block forming cylinder by the screw conveyor and pressed by the piston rod for dehydration.

  Therefore, in Patent Document 3, the cylinder forms a closed space around the screw conveyor, and the size of the flow path cross section of the cylinder is a factor that regulates the flow rate of the defibrated material suspension flowing through the cylinder. In order to increase the amount of dewatering, it is necessary to increase the size of the cylinder and the screw conveyor. In addition, because the dehydration process requires a screw conveyor and a cylinder for extruding defibrated material with a piston rod, it includes elements that increase the size of the device and is installed in offices where waste paper is generated. Therefore, it is not suitable for a small waste paper recycling processing apparatus that recycles paper.

  An object of the present invention is to solve the above-described problems, and to provide a deinking waste liquid processing apparatus and a deinking processing apparatus that have a compact configuration that can be mounted on a small waste paper recycling processing apparatus and that have excellent dewatering efficiency. And

  In order to solve the above-mentioned problems, the deinking waste liquid treatment apparatus of the present invention dehydrates the deinking waste liquid containing waste paper pulp, and is inclined at an upward slope from the start side to the end side, A spiral rotating part that rotates around, a casing that has water permeability and is arranged around the spiral rotating part along the axial direction, and a press plate that faces the end of the helical rotating part in the axial direction. The casing includes a gravity dewatering unit from the start side toward the end side, and a compression dewatering unit at the end.

  In the deinking waste liquid treatment apparatus of the present invention, the casing has a gravity dewatering part that forms an open top space around the spiral rotating part, and the compression dehydrating part is closed between the press plate and the end of the spiral rotating part. It is characterized by forming a space.

In the deinking waste liquid treatment apparatus of the present invention, the compression dehydration part of the casing has a cylindrical shape.
In the deinking waste liquid treatment apparatus of the present invention, the gravity dewatering portion of the casing is formed of a net-like body having a predetermined mesh width.

In the deinking waste liquid treatment apparatus of the present invention, the spiral rotating part has a spiral blade part that can be detached from the casing.
A deinking apparatus according to the present invention includes a deinking unit that deinks a pulp solution obtained by disaggregating used paper, and any of the above-described deinking waste liquid processing devices disposed below the deinking unit. The deinking waste liquid flowing out from the take-out port provided in the black ink portion naturally flows down into the casing of the deinking waste liquid processing apparatus.

  As described above, according to the present invention, the deinking waste liquid dropped on the casing is immediately dehydrated in the gravity dehydration unit, and solid components such as waste paper pulp containing moisture are gravity-induced by the rotation of the spiral rotation unit. While being transported through the dewatering unit, the water is drained and sent to the compression dewatering unit. In the compression / dehydration part, waste paper pulp is sent out by the spiral rotating part toward the presser plate and dehydrated by pressing. Accordingly, the waste paper pulp can be conveyed in the casing by the rotation of the spiral rotating portion, whereby the waste paper pulp can be continuously dewatered, drained and squeezed, and the dewatering efficiency can be improved with a simple configuration. it can.

  The gravitational dewatering section has an open space with an open top and is made of a net-like body with excellent solid-liquid separation and water permeability, so that a large amount of deinking waste liquid can be discharged at once without being restricted by the size of the flow passage cross section of the casing. It can be dropped into the casing in a short time, and the processing time can be shortened.

  The spiral rotating part has a spiral blade part that can be detached from the casing, and when the solid content is clogged in the casing inner surface or the mesh body, the spiral blade part is removed to facilitate maintenance of the casing. Can be done.

  In addition, since the deinking waste liquid flowing out from the outlet provided in the deinking part naturally flows into the casing of the deinking waste liquid processing apparatus, the deinking waste liquid can be transferred without requiring power.

The front view which shows the deinking waste liquid processing apparatus in embodiment of this invention Top view of the deinking waste liquid treatment equipment 1 is a cross-sectional view of the deinking waste liquid treatment apparatus taken along the line AA in FIG. A perspective sectional view showing a state in which the presser plate is closed in the deinking waste liquid treatment apparatus. Cross-sectional perspective view showing a state where the presser plate is opened in the deinking waste liquid treatment apparatus Block diagram showing a used paper recycling apparatus in the same embodiment Schematic diagram showing the papermaking section in the same embodiment

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 6, the used paper recycling processing apparatus has a plurality of processing units constituting a used paper recycling processing system, and the processing units include a used paper feeding unit 1, a pulper unit 9, a deinking unit 11, and a paper making unit. 13, a drying unit 14, a finishing unit 15, a white water tank unit 100, and a deinking waste liquid treatment apparatus 101. In addition, the used paper recycling apparatus includes a control unit 700 that controls the operation of each processing unit.

  In the present embodiment, the used paper input unit 1 inputs recycled paper used as a raw material to the pulper unit 9, and the pulper unit 9 disaggregates the used paper in disaggregation water to produce a pulp solution containing used paper pulp. . The deinking unit 11 deinks the pulp solution in the deinking tank 501, separates and removes the deinking waste liquid containing solids such as fibers and ink in the pulp solution, and removes the deinked pulp solution from the paper making unit 13. And the deinking waste liquid is taken out from the outlet and supplied to the deinking waste liquid processing apparatus 101 through the deinking drainage system 102.

  As shown in FIG. 7, the paper making unit 13 makes the wet paper 12 from the deinked pulp solution, and includes a paper making wire 42 composed of a mesh belt wound around a plurality of rollers 41, A head box 43 for pouring the blackened pulp solution onto the papermaking wire 42 is provided.

  The endless track of the paper making wire 42 includes an outward path portion from the head box 43 to a later-described drying roller 49, a transition portion that covers a part of the drying roller 49, and a return path portion that returns from the drying roller 49 to the head box 43. .

  In the forward path portion of the papermaking wire 42, a draining portion 44 that slides on the lower surface of the papermaking wire 42 and drops water dripping from the lower surface of the papermaking wire 42 near the head box 43 on the lower side of the papermaking wire 42, and the papermaking wire 42 A suction device 45 for sucking moisture from the wet paper 12 is provided.

  Further, on the downstream side of the suction device 45, a plurality of squeezing rollers 41a and 41b are located with the paper making wire 42 interposed therebetween, and the wet paper 12 on the paper making wire 42 passing between both rollers by the squeezing rollers 41a and 41b. Squeeze. Assuming that the moisture content of the wet paper 12 immediately after being supplied from the head box 43 to the papermaking wire 42 is 100%, the wet paper 12 that has passed through the squeezing rollers 41a and 41b has a moisture content of 60 to 65%.

  The drying unit 14 includes a drying roller 49 that dries the dehydrated wet paper 12. The drying roller 49 has a built-in heating device. A part of the drying roller 49 is covered with a canvas belt 51 wound around a plurality of rollers 50 and covers the drying roller 49 with a part of the endless track, and the drying unit 14 is provided between the canvas belt 51 and the outer peripheral surface of the drying roller 49. The wet paper 12 is sandwiched between the two, and the wet paper 12 is dried by the drying roller 49. A calender roller 50 a that presses the wet paper 12 against the drying roller 49 is provided between the transition portion of the paper making wire 42 and the canvas belt 51.

The dried dry paper 61 is separated from the canvas belt 51 by the scraper 111 at the forward end position of the canvas belt 51 and guided to the finish 15.
The finishing unit 15 performs a finishing process on the dry paper 61 obtained by drying the wet paper 12, and discharges the obtained recycled paper 62 to the paper receiving unit 63. The dry paper 61 is a predetermined size. A metal cutter device 60 and a slitter device 112 are provided.

  The white water tank unit 100 stores white water, which is waste water containing waste paper pulp flowing from the paper making unit 13 through the paper making drainage system 104, and returns the white water to various parts of the used paper recycling processing system through the white water return systems 105 and 106. . A white water return system 106 communicating with the pulper unit 9 supplies white water as disaggregation water to the tank body 91 of the pulper unit 9.

  A water supply source 108, here, a water supply pipe 108 for supplying water from a water supply pipe 107 is connected to the white water tank section 100, and a main valve device 109 for emergency stop including an electromagnetic valve is provided in the water supply pipe 108.

  As shown in FIGS. 1 to 5, the deinking waste liquid treatment apparatus 101 is located below the deinking tank 501 of the deinking unit 11 and does not require power from the deinking unit 11 through the deinking drainage system 102. It treats the deinking waste liquid that flows down naturally, and separates solid components and liquid phase components such as fibers, ink, and toner of waste paper pulp. The deinking unit 11 and the deinking waste liquid processing apparatus 101 constitute a deinking processing apparatus.

  The deinking waste liquid has a high solid component content and contains a surfactant as a deinking agent. By adding a flocculant to the deinking waste liquid, the solid component and the liquid phase can be easily separated. For this reason, the deinking waste liquid flows down to the deinking waste liquid processing apparatus 101 together with the flocculant added in the deinking unit 11, or the flocculant is added in the middle of the deinking drainage system 102. As the flocculant, for example, a cationic one can be used.

  The deinking waste liquid treatment apparatus 101 includes a dehydrating unit 601 and a compressing unit 602, a dehydrating unit driving unit 603 of the dehydrating unit 601 on one side, and a compression system driving unit 604 of the compressing unit 602 on the other side. The waste liquid tank 300 and the garbage tank 301 are provided below the dehydrating unit 601 and the compression unit 602, and the shooter 302 is provided between the discharge side of the compression unit 602 and the garbage tank 301.

  The deinking waste liquid treatment apparatus 101 includes a front outer wall plate 650 disposed in the dehydrating system driving unit 603, a front fixing plate 651 disposed between the dehydrating unit 601 and the dehydrating system driving unit 603, and a dehydrating unit 601 as a structural housing. A rear fixing plate 652 disposed between the compression portions 602, a rear outer wall plate 653 disposed in the compression portion 602, a front connecting member that connects the front outer wall plate 650, the front fixing plate 651, and the rear fixing plate 652. 654, 655, and rear connection members 656, 657 for connecting the rear fixing plate 652 and the rear outer wall plate 653.

  The dewatering unit 601 is located between the front fixing plate 651 and the rear fixing plate 652, and has a casing 605 and a helical rotating unit 606, and the helical rotating unit 606 rises from the starting end side toward the terminal end side. The casing 605 is arranged around the spiral rotating portion 606 along the axial direction.

  The spiral rotating portion 606 is provided with a spiral blade portion 608 around the trunk shaft 607. The trunk shaft 607 has a through hole 609 in the axial direction, and the rotational drive shaft 610 is inserted into the through hole 609. To do. The spiral rotating portion 606 is detachably provided by screwing the spiral blade portion 608 to the rotation drive shaft 610 that is rotatably held on the structure housing side, and the spiral blade portion 608 is provided from the casing 605. It is provided so that it can be detached. With this configuration, when the solid content is clogged in the inner surface of the casing 605 or the mesh, the maintenance of the casing 605 can be easily performed by removing the spiral blade portion 608.

  Further, the rotational drive shaft 610 and the spiral blade portion 608 can be integrally and detachably provided on the structure housing side, and the rotational drive shaft 610 and the spiral blade portion 608 can be detachably provided from the casing 605. is there. Further, the rotation drive shaft 610, the spiral blade 608, and the dehydration system drive unit 603 are integrally and detachably provided on the structure housing side, and the rotation drive shaft 610, the spiral blade unit 608, and the dehydration system drive unit 603 are provided. It is also possible to detach from the casing 605. Further, the spiral blade portion 608 can be provided so as not to be detached from the casing 605.

  In the present embodiment, the body shaft 607 has the same outer diameter from the start end side to the end side, but it is also possible to form the body shaft 607 in a tapered shape so that the start end side is thin and the end side is thick. In addition, the pitch of the blades 608 can be wide on the start end side and narrow on the end end side.

  The casing 605 is spanned between the start end plate 611 fixed to the front side fixed plate 651, the end plate 612 fixed to the rear side fix plate 652, and between the start end plate 611 and the end plate 612, on both sides of the spiral rotating portion 606. It has the side plates 613 and 614 to be arranged, and the gravity dehydrating unit 615 arranged along the axial center of the spiral rotating portion 606 spanning the side plates 613 and 614 on both sides. The gravity dewatering unit 615 has a predetermined mesh width and is formed of a net-like body that is excellent in solid-liquid separation and water permeability. The gravity dehydrating unit 615 forms an open space with an open top around the spiral rotating unit 606 and has a U-shaped cross section. Therefore, the bottom portion is in sliding contact with the outer peripheral edge of the spiral blade portion 608, and the side portions are fixed to the side plates 613 and 614. The net-like body forming the gravity dewatering section 615 can be provided detachably with respect to the start end plate 611, the end plate 612, and the side plates 613 and 614, and maintenance is facilitated. The gravity dewatering unit 615 may have a circular shape with an open top or an oval shape. Since the gravity dewatering unit 615 forms an open space with an open top, it can be easily removed even when foreign matter is mixed in, and maintenance is easy. However, the gravity dewatering unit 615 can be a closed space.

  A plurality of support rods 616 are provided between the start end plate 611 and the end plate 612 outside the net of the gravity dewatering unit 615. The gravity dewatering unit 615 can use punching metal or a filter cloth instead of the mesh body, but the mesh body has a large aperture ratio and excellent water permeability. Therefore, in this embodiment, the deinking waste liquid is used. Suitable for solid-liquid separation.

  The compression unit 602 includes a holding plate 617 disposed opposite to the terminal end of the spiral rotating unit 606 and a cylindrical compression / dehydration unit 618 provided on the terminal plate 612 of the casing 605. A closed space is formed between the plate 617 and the terminal end of the spiral rotating unit 606.

  The dehydration system drive unit 603 is disposed on one end side of the rotation drive shaft 610 of the spiral rotation unit 606, the dehydration drive motor 660 provided on the front outer wall plate 650, the main driving pulley 661 provided on the drive shaft of the dehydration drive motor 660. A driven pulley 662 provided, a belt 663 stretched between the driven pulley 661 and the driven pulley 662, a photointerplater 664 provided on the front outer wall plate 650, and a light shielding plate 665 provided at one end of the rotary drive shaft 610. Have.

The compression system drive unit 604 is disposed between the rear fixing plate 652 and the rear outer wall plate 653, and supports an intermediate support unit 670 that supports both sides with the rear connecting members 656 and 657, and the intermediate support unit 670 and the rear outer wall plate 653. A ball screw portion 671 that is disposed between and rotatably supported by the intermediate support portion 670 and the rear outer wall plate 653, and a press plate that moves integrally with the nut portion 672 of the ball screw portion 671 in the axial direction of the ball screw portion 671 A plurality of spring rods 674 that are disposed between the support portion 673 and the presser plate support portion 673 and the presser plate 617 and bias the presser plate 617 toward the compression / dehydration portion 618 of the casing 605 with respect to the presser plate support portion 673. A presser plate drive motor 675 provided on the rear outer wall plate 653, a main pulley 676 provided on the drive shaft of the presser plate drive motor 675, and one of the ball screw portions 671. A driven pulley 678 which is provided to, and a belt 679 that was passed over to the main drive pulley 678 and the driven pulley 678. In addition, as a detection unit that detects that the amount of the compressed material accumulated in the compression / dehydration unit 618 has reached a predetermined amount, a plurality of optical sensors 691 and 692 are provided in the compression system drive unit 604, and a light shielding plate 693 is provided in the presser plate 617. The movement of the presser plate 617 is detected. In this embodiment, the sensor means for detecting the closed position and the open position of the presser plate 617 is also used as a detection unit for detecting that the compressed material has reached a predetermined amount. However, the detection unit has another configuration. It is also possible to apply.

  The operation of the above configuration will be described below. The control unit 700 controls the used paper input unit 1, the pulper unit 9, the deinking unit 11, the paper making unit 13, the drying unit 14, the finishing unit 15, the deinking waste liquid processing apparatus 101, and the white water tank unit 100. Operate the used paper recycling system.

  In the deinking waste liquid treatment apparatus 101, the deinking waste liquid naturally flows from the deinking part 11 through the deinking drainage system 102 to the gravity dewatering part 615 of the casing 605 without requiring power. Since the gravity dewatering unit 615 has a predetermined length, it can receive a large amount of deinking waste liquid at a time. The deinking waste liquid dropped on the casing 605 is formed of a net-like body having a solid-liquid separating property and water permeability, and the gravity dehydrating unit 615 is formed into a spiral rotating unit 606. Accordingly, the liquid phase component is immediately dehydrated on the start end side without reaching the compression dehydration unit 618 by inclining with an upward slope from the start end side to the end side. The dehydrated liquid phase is stored by flowing down to the waste liquid tank 300 and discharged outside the apparatus. Alternatively, a part is used as a defoaming liquid by circulating it to the deinking tank 501.

  The compression and dehydration unit 618 has a net-like body to increase the opening ratio, has good water permeability (drainage), and quickly separates the deinking waste liquid into solid-liquid separation by locking waste paper pulp fibers and the like with a net wire. it can. Therefore, a large amount of deinking waste liquid can be dropped into the casing 605 in a short time at a time without being restricted by the size of the flow path cross section of the casing 605, and the processing time can be shortened.

  In the dehydrating unit 601 of the deinking waste liquid processing apparatus 101, the rotation driving shaft 610 is rotated via the main driving pulley 661, the belt 663, and the driven pulley 662 by the driving of the dehydrating driving motor 660, and spirally rotates integrally with the rotation driving shaft 610. The portion 606 is rotated, and solid components such as waste paper pulp including moisture are drained while being transferred from the start end side to the end side by the rotation of the spiral rotation portion 606, and are sent to the compression dehydration portion 618. .

  As shown in FIG. 4, in the compression unit 602 of the deinking waste liquid treatment apparatus 101, the ball screw unit 671 is rotated through the main pulley 676, the belt 679, and the driven pulley 678 by driving the presser plate drive motor 675. The holding plate support portion 673 moves in the axial direction of the ball screw portion 671 together with the nut portion 672 of the ball screw portion 671, and the spring rod 674 and the holding plate 917 move toward the compression / dehydration portion 618 of the casing 605 together with the holding plate support portion 673. The compression plate 617 closes the opening of the cylindrical body of the compression / dehydration part 618 of the casing 605 while compressing the spring rod 674. In this state, the spring rod 674 urges the presser plate 617 toward the compression / dehydration unit 618.

  Solid components such as waste paper pulp fed to the compression / dehydration unit 618 by the spiral blade 608 by the rotation of the spiral rotation unit 606 are closed between the compression / dehydration unit 618, the presser plate 617, and the terminal end of the spiral rotation unit 606. It is compressed in space and dehydrated by pressing. When the compressed material staying inside the compression / dehydration unit 618 exceeds the capacity of the closed space, the presser plate 617 is retracted against the urging force of the spring rod 674. By detecting the movement of the pressing plate 617 with the optical sensor 691, it can be easily detected that the compressed material has reached a predetermined amount.

  As shown in FIG. 5, the ball screw portion 671 is rotated in reverse by driving of the presser plate drive motor 675, the presser plate 917 is moved backward together with the presser plate support portion 673, and the presser plate 617 is separated from the compression / dehydration unit 618 of the casing 605. The opening of the cylindrical body is opened, and the compressed product is discharged. The compressed material is discharged by the rotation of the spiral rotating unit 606, and is discharged to the garbage tank 301 by the shooter 302 and collected. Therefore, a mechanism for discharging the compressed product is unnecessary. The presser plate 617 can be opened by manually operating a handle provided separately without using the presser plate drive motor 675. Further, the discharge of the compressed material can be performed by providing another means, for example, a mechanism for knocking the compressed material from the compression / dehydrating unit 618 independently of the rotation of the spiral rotating unit 606.

  Therefore, the waste paper pulp can be continuously dehydrated, drained and squeezed by transporting the waste paper pulp in the casing 605 by the rotation of the spiral rotating portion 606, and the dewatering efficiency can be improved with a simple configuration. It is possible to make a discharge having a moisture content of 90% in the past into a compressed product having a moisture content of 60-70%. The volume of effluent can be reduced to about 1/4 of the conventional volume.

  Further, since the deinking waste liquid flowing out from the outlet provided in the deinking unit 11 naturally flows into the casing 605 of the deinking waste liquid processing apparatus 101, the deinking waste liquid can be transferred without requiring power. Here, the deinking waste liquid was taken out from the takeout port located almost at the center of the bottom of the deinking part 11. However, the position at which the deinking waste liquid is taken out in the deinking unit 11 is not limited to the bottom. Further, the deinking waste liquid can be transferred to the deinking waste liquid processing apparatus 101 using a pump or the like.

DESCRIPTION OF SYMBOLS 1 Used paper input part 9 Pulper part 11 Deinking part 12 Wet paper 13 Paper making part 14 Drying part 15 Finishing part 41 Roller 41a, 41b Drawing roller 42 Paper making wire 43 Head box 44 Draining part 45 Suction device 49 Drying roller 50 Roller 50a Calendar roller 51 canvas belt 60 cutter device 61 dry paper 62 recycled paper 63 paper receiving unit 100 white water tank unit 101 deinking waste liquid treatment device 102 deinking drainage system 104 papermaking drainage system 105, 106 white water return system 107 water supply pipe 108 water supply pipe 109 yuan Valve device 111 Scraper 112 Slitter device 300 Waste liquid tank 301 Garbage tank 302 Shooter 501 Deinking tank 601 Dewatering unit 602 Compression unit 603 Dehydration system drive unit 604 Compression system drive unit 605 Casing 606 Spiral rotation unit 607 Body shaft 608 Spiral feather 609 Through-hole 610 Rotation drive shaft 611 Start plate 612 End plate 613, 614 Side plate 615 Gravity dewatering unit 616 Support rod 617 Press plate 618 Compression dehydration unit 650 Front outer wall plate 651 Front fixing plate 652 Rear fixing plate 653 Rear outer wall plate 654, 655 Front connection member 656, 657 Rear connection member 660 Dehydration drive motor 661 Main drive pulley 662 Driven pulley 663 Belt 664 Photointerplater 665 Light shielding plate 670 Intermediate support portion 671 Ball screw portion 672 Nut portion 673 Press plate support portion 674 Spring rod 675 Presser plate drive motor 676 Main drive pulley 678 Driven pulley 679 Belt 691, 692 Optical sensor 693 Light shielding plate 700 Control unit

Claims (6)

  The deinking waste liquid containing waste paper pulp is dehydrated, and it is inclined with an upward slope from the start side to the end side, and has a spiral rotating part that rotates around the axis and water permeability. A casing disposed around the rotating part along the axial center direction and a presser plate facing the terminal end of the spiral rotating part in the axial center direction. The casing has a gravity dehydrating part from the starting end side toward the terminal end side. And a deinking waste liquid treatment apparatus having a compression dehydration unit at the end.   The casing is characterized in that the gravity dewatering part forms an open space with an open top around the spiral rotating part, and the compression dewatering part forms a closed space between the presser plate and the end of the spiral rotating part. Item 2. The deinking waste liquid treatment apparatus according to Item 1.   The deinking waste liquid treatment apparatus according to claim 2, wherein the compression dehydration part of the casing has a cylindrical shape.   3. The deinking waste liquid treatment apparatus according to claim 1, wherein the gravity dewatering portion of the casing is formed of a net-like body having a predetermined mesh width.   The deinking waste liquid treatment apparatus according to any one of claims 1 to 4, wherein the spiral rotating part has a spiral blade part that can be detached from the casing.   6. A deinking unit for deinking a pulp solution obtained by disaggregating waste paper, and a deinking waste liquid treatment apparatus according to claim 1 disposed below the deinking unit, A deinking treatment apparatus, wherein deinking waste liquid flowing out from an outlet provided in the section naturally flows into a casing of the deinking waste liquid treatment apparatus.

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