WO2011070994A1

WO2011070994A1 - Wastepaper processing device

Info

Publication number: WO2011070994A1
Application number: PCT/JP2010/071783
Authority: WO
Inventors: 章川口; 泰成岡垣内
Original assignee: デュプロ精工株式会社
Priority date: 2009-12-09
Filing date: 2010-12-06
Publication date: 2011-06-16
Also published as: JP5511341B2; JP2011122253A; DE112010004740T5

Abstract

Disclosed is a wastepaper processing device that can be operated automatically and can be stopped automatically at any given time, such as in the nighttime, without the need for a user to operate the device and with which maintenance operations can be selected and performed automatically. The disclosed wastepaper processing device includes: an functional unit (716) for controlling automatic operation, which sequentially performs operation processes from when the operation is started until the operation is stopped; a functional unit (722) for calculating the estimated number of recycled sheets, which calculates the estimated number of sheets that can be recycled until the end of a recycling operation; and a display unit (74) for displaying the estimated number of recycled sheets calculated by the unit (722) for calculating the estimated number of recycled sheets.

Description

Waste paper processing equipment

The present invention relates to a technique for producing paper from recycled pulp from which used paper is disaggregated, and relates to a small used paper processing apparatus that can be installed in an office or the like where waste paper is generated to recycle the paper.

Conventionally, in Japan, a technology and a social system for collecting used paper once used, for example, used newspapers and recycling the used paper are established.

A papermaking method performed in a general paper mill includes a pulp process, a papermaking process, and a finishing process. When used paper is used as a raw material, a used paper pulp process is added.

In the pulping process, pulp is produced from wood chips through a process such as cooking, washing, bleaching, and selection by a chemical method, which is one of the pulping methods for extracting fibers from wood.

In the waste paper pulp process, the waste paper that is the raw material is dissolved in water, and metal, film, adhesive resin, printing ink (dye type, pigment type), which is a foreign matter other than paper fiber, using mechanical power and chemicals, The copy toner is separated and removed, and then bleached, dehydrated and dried to obtain waste paper pulp.

In the papermaking process, the product paper is processed through the wire part, press part, dryer part, calendar part, and coater part of the paper machine. In the wire part, the prepared (regenerated) pulp is placed on a paper making net (wire) and dehydrated to make paper, and in the press part, the moisture in the wet paper containing a large amount of moisture from the wire part is removed. In the dryer part, the paper is dried through a dryer heated with steam, in the calendar part, the paper surface is smoothed between the rolls, and in the coater part, the base paper is coated with paint.

In the finishing process, the super calender part smoothes the micro unevenness of the paper coated with the coater part to give it a gloss, and the cutter and winder part cut it into a predetermined product size or wind it on a roll.

By the way, when making recycled paper from waste paper, there are the following problems. The consumption place such as the office where waste paper is generated by the consumption of paper and the paper mill that recycles the paper from the waste paper are separated, and cost and energy are required to transport the waste paper. Moreover, there is a risk that confidential information and the like written on the paper will be leaked to the outside by taking out the used paper. For this reason, the paper is finely cut with a shredder, but the shredded dust that has been finely cut is difficult to regenerate because the fibers are too short.

In Japanese Laid-Open Patent Publication No. 8-60570, as a method for producing recycled paper, raw paper is disaggregated, soaked and deinked, and yeast having cohesive properties is added. A configuration is described in which fine inorganic pigments, carbon particles, and the like contained in the system are aggregated, and then the aggregates are separated and removed by flotation.

In Japanese Patent Laid-Open Publication No. 10-317290, as a waste paper recycling method and apparatus, a step of separating waste paper cut by a document cutter into recycled pulp, a step of storing recycled pulp, A configuration is described which includes a step of filling a pulp into an injection device and spraying the fiber sheet, and a step of making paper of the recycled pulp sprayed on the fiber sheet.

In the above prior art documents, it is proposed to reduce the size of the apparatus. However, although it is configured to batch process multiple sheets of used paper, it does not have a function to store a large amount of used paper or cut paper dust in the device. Cannot exceed the capacity of one time.

For this reason, when a large amount of used paper is processed, a waiting time occurs in the used paper input operation, which is inconvenient for the user. In addition, the user must always operate to operate the apparatus, and at least the operation of the user is required to start and end the operation, and the apparatus cannot be started and stopped at an arbitrary time.

In addition, small waste paper processing devices that can be installed in schools and offices are preferably operated at night in consideration of noise during operation, and automatic operation and automatic stop are reliably performed without user intervention at night. It is desirable to execute and automatically select and execute a maintenance operation according to the situation.

Also, in a small waste paper processing device, a cleaning operation is executed as a maintenance operation after the regeneration operation is completed, and then a water draining operation is executed. However, even if the water draining operation is executed, it is difficult to completely drain the water in the pump and piping of the apparatus. As a result, when the operation is stopped for a long time, the water in the pump and the piping may be spoiled, and when the re-operation is performed by restarting the equipment, the spoiled water may cause a significant deterioration in the quality of the recycled paper. Become.

Also, during emergency stop such as electrical trouble, mechanical trouble, processing trouble, power outage, or user stop request, the fiber suspension in the recycled pulp fiber aggregates during operation stop. Since the quality after restoration deteriorates, maintenance work by manual operation by the user is always performed at the time of restoration of operation.

The present invention solves the above-described problem, and while downsizing the device, without any user operation at any time, such as at night, can be operated by automatic operation and can be automatically stopped, It is another object of the present invention to provide a used paper processing apparatus capable of automatically selecting and executing a maintenance operation corresponding to a situation.

In order to solve the above problems, the used paper processing apparatus of the present invention includes a raw material storage unit for storing used paper or a cut piece of used paper as a recycled material, a recycled pulp unit for separating recycled material to prepare recycled pulp, A paper making section for making recycled paper by making pulp, a control section for controlling the operation of each section, and a quantity measuring sensor for measuring the amount of raw material stored in the raw material storage section,
The control unit is an automatic operation control function unit that sequentially executes the operation process from the start of operation to the operation stop, and a time setting function that can arbitrarily set at least one of the scheduled operation start time and the scheduled operation end time And a timing input unit that inputs at least one of operation start and operation stop timing as an instruction signal to the automatic operation control function unit when an internal clock arranged in the control unit reaches the scheduled time. Calculated by the expected regeneration number calculation function unit that calculates the expected number of regeneration possible before the end of regeneration operation from the amount of raw material measured by the quantity measurement sensor, and the expected regeneration number calculation function unit It has a display means for displaying the predicted reproduction number.

The used paper processing apparatus of the present invention comprises a raw material storage section for storing used paper or a cut piece of used paper as a recycled raw material, a recycled pulp section for separating (regenerating) recycled pulp from the recycled raw material, and paper for the recycled pulp. A paper making unit for preparing (reproducing) recycled paper, a control unit for controlling the operation of each unit, and a quantity measuring sensor for measuring the amount of raw material stored in the raw material storage unit,
The control unit can be regenerated from the amount of raw material measured by a quantity measurement sensor, an automatic operation control function unit that sequentially executes the operation process from the start of operation to operation stop, a time setting function unit that can arbitrarily set the operation time A predicted reproduction number calculation function unit that calculates the expected reproduction number that can be reproduced before the end of the regeneration operation, and a display means that displays the expected reproduction number calculated by the expected reproduction number calculation function unit. Features.

In the used paper processing apparatus of the present invention, deinking is provided in the middle of a transfer path for transferring recycled pulp from the recycled pulp section to the papermaking section, and bleached recycled pulp flowing from the upstream side of the transfer path to prepare deinked pulp A pulp part is provided, and the paper making part makes deinked pulp and prepares recycled paper.

In the used paper processing apparatus of the present invention, the control unit has a counter function unit that accumulates the number of completed recycled paper sheets, and displays the number of completed reproductions accumulated by the counter function unit on the display means.

In the used paper processing apparatus of the present invention, the control unit has a counter function unit for accumulating the number of completed recycled paper sheets, and the remaining number of operation times and the remaining operation time accumulated by the counter function unit by the expected reproduction number calculating function unit The estimated number of reproductions that can be regenerated before the end of the regeneration operation is recalculated, and the estimated number of regenerations that are recalculated is displayed on the display means.

In the used paper processing apparatus of the present invention, the control unit has a counter function unit for accumulating the number of completed recycled paper sheets, and the reproduction completion number and time setting function unit for integrating the counter function unit by the expected reproduction number calculating function unit. The estimated number of reproductions that can be regenerated from the remaining time of the operation time to be changed to the end of the reproduction operation is recalculated, and the estimated number of reproductions to be recalculated is displayed on the display means.

In the used paper processing apparatus of the present invention, the control unit includes a counter function unit for integrating the number of completed recycled paper sheets, a target number setting function unit for setting a target number of recycled paper sheets within the expected number of recycled papers, Stop the regenerative operation when the number of completed playbacks accumulated in the operation time integration function unit that integrates the operation time and the counter function unit reaches the regeneration target number set in the target number setting function unit, or use the operation time integration function unit And an operation stop selection function unit that selectively sets whether to stop the regeneration operation when the accumulated operation time reaches the operation time set by the time setting function unit.

In the used paper processing apparatus of the present invention, the control unit sets a target number setting function unit for setting the target number of recycled paper within the expected number of recycled papers, and a reproduction for calculating an expected reproduction time required for completion of the reproduction operation for the target number of recycled papers. It has an expected time calculation function unit and displays the expected reproduction time on the display means.

In the used paper processing apparatus of the present invention, the control unit includes an expected reproduction time calculation function unit that calculates an expected reproduction time required to reproduce the amount of the raw material measured by the quantity measurement sensor. When the operation time set by the time setting function unit exceeds the expected reproduction time, a warning is issued by warning means.

In the used paper processing apparatus of the present invention, the control unit has a power mode selection function unit that selects and sets whether to execute the power saving mode or the auto power off mode after the end of the regeneration operation.

In the used paper processing apparatus of the present invention, the control unit performs a draining operation and a preset maintenance operation after completion of the regeneration operation.

In the used paper processing apparatus of the present invention, the control unit performs a cleaning operation with cleaning water containing a preservative as a maintenance operation after the drainage operation is completed.

In the used paper processing apparatus of the present invention, the control unit has an operation stop time measurement function unit that measures the operation stop time while the regeneration operation is stopped, and an operation stop cause determination function unit that determines the operation stop cause. A maintenance operation set in advance according to the operation stop time and the cause of the operation stop is executed.

In the used paper processing apparatus of the present invention, the control unit includes an operation interruption instruction unit that instructs the user to interrupt the regeneration operation, the operation stop cause determination function unit determines the operation stop instruction as the cause of the operation stop, and the operation stop time. Is performed within the predetermined time, the papermaking unit cleaning operation set in advance as a maintenance operation is executed, the operation stop cause determination function unit determines the operation stop instruction as the cause of the operation stop, and the operation stop time is set to the predetermined time. When exceeding, a disposal operation for discarding the recycled paper in the course of the regeneration operation, a drain operation, and a cleaning operation set in advance as a maintenance operation are executed.

In the used paper processing apparatus of the present invention, the control unit determines in advance that the operation stop cause determination function unit is the cause of the power outage and when the operation stop time is within a predetermined time, After performing the washing operation of the papermaking section set as the maintenance operation, the operation stop cause determination function unit determines that the power outage is the cause of the operation stop, and when the operation stop time exceeds the predetermined time, It is characterized in that a discarding operation for discarding recycled paper in the course of recycling operation, a draining operation, and a cleaning operation set in advance as a maintenance operation are executed.

As described above, according to the present invention, when the user sets automatic operation at night, the operation time is set by setting the operation start scheduled time and the operation end scheduled time, or the operation time is long. By setting the length itself, the user can set the operation time for operating the apparatus independently, and by displaying the expected reproduction number on the display means, it is possible to give the user a sense of security.

In addition, automatic operation and automatic stop are performed at night, etc., and maintenance operation according to the situation is automatically selected and executed without user intervention, so that maintenance operation is not performed at the next operation, The regeneration operation can be started immediately.

Schematic diagram showing a used paper processing apparatus in an embodiment of the present invention Schematic showing the recycled pulp section of the used paper processing equipment Schematic diagram showing the action of the fiber concentration adjustment section in the recycled pulp section of the used paper processing equipment Schematic diagram showing the deinking section of the used paper processing equipment Schematic showing the drying roller of the used paper processing equipment Block diagram of the control unit of the used paper processing device Flow sheet showing the control of the used paper processing equipment Flow sheet diagram showing operation start condition check in the same control Flow sheet diagram showing operation stop condition check in the same control Flow sheet diagram showing operation preparation operation in the same control Flow sheet diagram showing stop preparation operation in the same control

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, the used paper processing apparatus integrally includes a recycled pulp unit 1, a deinking pulp unit 2, a paper making unit 3, a finishing unit 4, and a drainage processing unit 5, and prepares (recycles) recycled paper from the used paper 6. And a control unit 7 for controlling the operation of the recycled pulp unit 1, the deinking pulp unit 2, the papermaking unit 3, the finishing unit 4, and the wastewater treatment unit 5.
(Recycled pulp part)
The recycled pulp unit 1 is a unit that prepares (regenerates) recycled pulp by separating the cut paper pieces of the used paper 6, and includes a standard paper tank 11 that forms a raw material storage unit that stores the recycled paper 6 as a standard raw material, A shredder tank 12 that forms a raw material storage unit that temporarily stores a cut piece of paper that has been cut into a predetermined size suitable for recycling by cutting the recycled paper 6 of the recycled material, a fiber amount adjusting unit 13, and a pulper 14 The fiber concentration adjusting unit 15 is provided.

As shown in FIG. 2, the shredder tank 12 has an upper opening 121 opened upward, and a bottom surface 122 forms an inclined surface inclined toward the discharge port 123. The discharge port 123 is provided with a discharge device 124 for discharging the cut paper piece 61. There are various discharge devices 124, but here, a plurality of blades are arranged radially around the rotation axis. A quantity measuring sensor 125 is disposed above the shredder tank 12, and the quantity measuring sensor 125 measures the quantity of the cut paper piece as a recycled material stored in the shredder tank 12. The amount of the cut paper piece is estimated by measuring.

Although not shown, the standard paper tank 11 is also provided with a quantity measuring sensor for measuring the quantity of the standard waste paper 6 as a recycled raw material.

The fiber amount adjustment unit 13 is disposed below the discharge port 123 of the shredder tank 12, and includes a tray part 131 that receives the cut paper piece 61 discharged from the discharge port 123, and a weighing unit 132 that supports the tray part 131. The weighing unit 132 measures the weight of the cut paper piece 61 put into the tray part 131, and adjusts the amount of the cut paper piece 61 put into the pulper 14, that is, the fiber amount, by changing the set weight related to the weighing. Similarly, the fiber amount adjusting unit 13 measures the weight of the standard waste paper 6 that is input from the standard paper tank 11, and changes the set weight related to the measurement, that is, the amount of the cut paper piece 61 that is input to the pulper 14, that is, Adjust the fiber amount.

As shown in FIG. 3, the receiving tray 131 tilts the receiving tray 131a from a horizontal posture to an inclined posture in which the receiving tray 131a is inclined toward the pulper 14, and has driving means such as a motor for tilting the receiving tray 131a. The tray 131a is provided so as to be openable and closable between a normal position where the side wall 131b adjacent to the pulper 14 stands and a tilt position where the side wall 131b tilts toward the pulper 14, and the side wall 131b tilts as the tray 131a tilts. Then, it returns to the standing posture with the backward movement of the tray 131a.

The cutting paper piece 61 is gradually dropped onto the tray 131a by the discharge device 124, and when the measurement value measured by the weighing unit 132 reaches the set value, the discharge device 124 is stopped, and the tray 131a is tilted to cut the cutting paper piece. 61 is put into the pulper 14. Similarly, the standard waste paper 6 is put into the pulper 14.

The pulper 14 disaggregates the cut paper piece 61 into fibers, that is, recycled pulp, in a solvent such as clean water or white water. The tank body 141 into which the cut paper piece 61 is put, and the stirring that swirls inside the tank body 141 The blade 142 and drive means (not shown) such as a motor that rotationally drives the stirring blade 142 are provided. The tank body 141 is provided with a heater 143 and a temperature sensor 144 for heating the solvent to a predetermined temperature, and a solvent supply system 101 for supplying the solvent from the waste water treatment unit 5 communicates therewith.

The pulper 14 communicates with the fiber concentration adjusting unit 15. The fiber concentration adjusting unit 15 supplies the recycled pulp-containing liquid to the deinked pulp unit 2 and the solvent from the waste water treatment unit 5 as the concentration adjusting solution. A concentration adjusting liquid supply system 103 is in communication.

In the pulper 14 and the fiber concentration adjusting unit 15, a solvent corresponding to the amount of paper of the regenerated raw material, here water, is charged into the tank body 141, and the stirrer blade 142 is driven to dissociate the fibers of the cut paper pieces to regenerate pulp. Is prepared (regenerated), and a regenerated pulp-containing liquid containing regenerated pulp is sent to the deinking pulp section 2 through the fiber concentration adjusting section 15.
(Deinking pulp section)
The deinking pulp unit 2 includes a storage tank 21, a pre-deinking dilution tank 22, and a deinking unit 23, and a transfer system 201 including a pipe, a pump, and the like between the storage tank 21 and the pre-deinking dilution tank 22. And a transfer system 202a including a pipe, a pump and the like and having a valve 202b is provided between the pre-deinking dilution tank 22 and the deinking unit 23, and the pre-deinking dilution tank 22 and a head box of the paper making unit 3 described later. A transfer system 202c having a valve 202d is provided between the

pipes

31 and 31.

The storage tank 21 stores the regenerated pulp-containing liquid sent from the fiber concentration adjusting unit 15 and supplies the regenerated pulp-containing liquid to the pre-deinking dilution tank 22. The dilution tank 22 before deinking is used to dilute the recycled pulp-containing liquid to a fiber concentration suitable for deinking, here about 1% by weight, and supplies a solvent as dilution water from the waste water treatment unit 5 104 communicates.

When the valves 201b and 201d are switched, the recycled pulp-containing liquid in the pre-deinking dilution tank 22 flows to the deinking section 23 through the transfer system 202a and directly flows to the head box 31 through the transfer system 202c. And can be switched.

The deinking unit 23 is called a flowator, and separates foreign matters such as ink and toner from the fiber. In the present embodiment, the deinking unit 23 has the configuration shown in FIG. The deinking section 23 has a front tank 231 and a rear tank 232, and the front tank 231 and the rear tank 232 communicate with each other at the opening on the upper end side of the partition wall 233 that forms the overflow weir.

Heaters

234 and 235 are arranged in the front tank 231 and the rear tank 232, respectively, a fine bubble jet port 236 and a stirring blade 237 are arranged in the front tank 231, and a temperature sensor 238 is arranged in the rear tank 232. ing.

In the front tank 231, in the presence of the surfactant, the regenerated pulp-containing liquid containing foreign particles such as ink and toner is stirred by the stirring blade 237, and fine bubbles are generated from the outlet 236 in the regenerated pulp-containing liquid. Blowing is performed, and hydrophobic foreign particles are adhered to the surface of the bubbles of the surfactant to be floated and separated, and the hydrophilic fibers are transferred from the opening on the upper end side of the partition wall 233 to the rear tank 232 for deinking. At this time, the recycled pulp-containing liquid is heated to a predetermined temperature by the

heaters

234 and 235, and the temperature is controlled by the temperature sensor 238.
(Paper making)
When the regenerated pulp-containing liquid in the pre-deinking dilution tank 22 flows to the deinking unit 23 through the transfer system 202a, the paper making unit 3 makes the deinked pulp flowing from the deinking unit 23 and recycles the regenerated paper. When the regenerated pulp-containing liquid in the pre-deinking dilution tank 22 flows directly to the head box 31 through the transfer system 202c, the regenerated pulp is made and regenerated paper is prepared (regenerated). 1 and includes a head box 31, a wire part 32, a dehydrating part 33, a pressing part 34, and a dryer part 35.

The wire part 32 has a mesh belt 323 stretched between

rolls

321 and 322 on both sides, and the mesh belt 323 forms an endless track. The mesh belt 323 is uniformly ejected with a deinked pulp-containing liquid including deinked pulp from the head box 31, and drained to form a fiber layer.

The dewatering unit 33 is composed of a pair of upper and lower water absorbing belts 332 made of felt stretched between a plurality of rollers 331, and transfers the wet paper 333 from the mesh belt 323 to the water absorbing belt 332, and between the upper and lower water absorbing belts 332. Water is dehydrated by pinching. The water absorbing belt 332 dehydrates between a pair of upper and lower dewatering rollers 334 provided on the traveling track.

The pressing unit 34 sandwiches the wet paper 333 between the water absorption belts 332, and squeezes and dehydrates it through a pair of upper and lower dewatering rollers 341.

The dryer unit 35 is configured to sandwich the wet paper 333 between a pair of upper and lower cloth conveyance belts 352 spanned between a plurality of rollers 351 and press the plurality of drying rollers 353 to dry the wet paper 333. In addition to the cloth, the conveyance belt 352 may be made of a material such as rubber or resin.

As shown in FIG. 5, the dryer unit 35 includes a temperature sensor 354 that measures the surface temperature of the drying roller 353 by disposing a conveying belt 352 around a drying roller 353 provided with a heater therein.
(Finishing part)
The finishing unit 4 includes a calendar unit 41 and a cutting unit 42. The calendar unit 41 passes wet paper 333 between a plurality of press rollers 411 to increase the flatness of the paper, and the cutting unit 42 uses a predetermined sheet size. And the recycled paper 100 is completed.
(Wastewater treatment department)
The waste water treatment unit 5 includes tank bodies of a white water tank 51 and a waste water treatment unit 52. The white water tank 51 stores waste water containing recycled pulp flowing from the wire part 32 through the papermaking drainage system 105, and returns to each step again. Supply. The waste water treatment unit 52 treats the deinking waste liquid flowing from the deinking unit 23 through the deinking drainage system 106. The waste water treatment unit 52 passes through a filter to remove fibers, ink, and toner, and is neutralized by adding chemicals to the public. Treat to the quality of water that can be drained into sewage. The white water tank 51 communicates with a makeup water supply system 107 that supplies clean water as makeup water.
(Control part)
As shown in FIG. 6, the control unit 7 has the following functional units as functional circuits set in the CPU 71. That is, a regenerated pulp unit control function unit 711 that controls the operation of the regenerated pulp unit 1, a deinking pulp unit control function unit 712 that controls the operation of the deinking pulp unit 2, and a paper making unit that controls the operation of the paper making unit 3 The control function unit 713, the finishing unit control function unit 714 that controls the operation of the finishing unit 4, the waste water treatment unit control function unit 715 that controls the operation of the waste water treatment unit 5, and the operation process from the start of operation to the stop of operation. An automatic operation control function unit 716 that executes sequentially, and an operation lock control function unit that inputs an operation start permission instruction or a disapproval instruction to the automatic operation control function part 716 in accordance with a cutting paper piece presence / absence signal input from the quantity measurement sensor 125 717, a target number setting function unit 718 for setting the target number of recycled paper to be prepared (regenerated), a counter function unit 719 for counting the number of prepared (regenerated) recycled paper, A drainage operation control function unit 720 that performs a predetermined drainage operation at the end of operation in the pulp unit 1, the deinking pulp unit 2, and the papermaking unit 3, a cleaning operation control function unit 721 that performs a predetermined cleaning operation, and a quantity measuring sensor 125 A predicted reproduction number calculation function unit 722 that calculates the expected number of reproductions that can be regenerated before the end of the regeneration operation within the maximum possible number of reproductions from the measured amount of raw material, and at least one of the scheduled operation start time and scheduled operation end time A time setting function unit 723 having at least one of a function for arbitrarily setting one of the scheduled times and a function for arbitrarily setting the operation time, an operation time integration function unit 724 for integrating the operation time of the regeneration operation, and a counter When the number of completed reproductions accumulated by the function unit 719 reaches the target number of reproductions set by the target number setting function unit 718, An operation stop selection function unit 725 for selectively setting whether to stop the regeneration operation when the operation time accumulated by the time integration function unit 724 reaches the operation time set by the time setting function unit 723, and the completion of the regeneration operation for the target number of reproductions The expected regeneration time calculation function unit 726 that calculates the expected regeneration time required until the end, the power mode selection function unit 727 that selectively sets whether to execute the power saving mode or the auto power off mode after the regeneration operation ends, and the regeneration operation is stopped In order to regenerate the amount of the raw material measured by the operation stop time measuring function unit 728 for measuring the operation stop time during the operation, the operation stop cause determination function unit 729 for determining the cause of the operation stop, and the quantity measuring sensor 125 Reproduction that calculates the required estimated regeneration time and issues a warning to the warning means described later when the operation time set in the time setting function section exceeds the estimated regeneration time And an expected time calculation function unit 730.

The control unit 7 also includes a timing input unit 73 for inputting at least one of operation start and operation stop timing as an instruction signal to the automatic operation control function unit 716, and a display unit 74 such as a liquid crystal panel that also functions as a warning unit. The operation interruption instructing means 75 for instructing the user to interrupt the regeneration operation is provided. The warning means may divide the image display area of the display unit 74, may be provided separately from the display unit 74, and may be alarm sound, voice, or the like.

In the present embodiment, the timing input unit 73 is composed of an internal clock disposed in the control unit 7, and inputs an instruction signal to the automatic operation control function unit 716 when the internal clock reaches a scheduled time. However, the timing input unit 73 may be an input port for inputting an instruction signal issued when an external clock arranged outside the control unit 7 reaches a scheduled time or an instruction signal issued from an external device. .

The control unit 7 performs the above-described operation in the regenerated pulp unit 1, the deinking pulp unit 2, the paper making unit 3, the finishing unit 4, and the waste water treatment unit 5, respectively, as a regenerated pulp unit control function unit 711 and a deinking pulp unit control function unit. 712, a papermaking section control function section 713, a finishing section control function section 714, and a wastewater treatment section control function section 715.
(Operation control)
The user operates various switches such as a touch panel provided on the display unit 74 to control at least one of the scheduled operation start time and the scheduled operation end time, or the operation time for which the operation is continuously continued. The time setting function unit 723 of the unit 7 is set. When only the scheduled operation start time is set, the possible operation time from the start of the device to the end of the regeneration operation is indefinite time until the completion of the regeneration operation, and only the scheduled operation end time is set. In this case, the operable time until the end of the regeneration operation for stopping the operation of the device is a limited time from the current time to the scheduled operation end time, and when setting the scheduled operation start time and the scheduled operation end time, The operable time until the end of the regeneration operation for stopping the operation is a limited time from the scheduled operation start time to the scheduled operation end time.

When setting the operation time to continue operation continuously, the operation possible time until the end of the regeneration operation to stop the operation of the device is the limited time until the operation time set from the current time expires, and the operation is scheduled to start When the time is set together, the operable time is a limited time until the set operation time expires from the scheduled operation start time.

The expected regeneration number calculation function unit 722 of the control unit 7 calculates the maximum reproducible number from the amount of the regenerated raw material measured by the quantity measuring sensor 125, and can regenerate within the maximum possible number and before the end of the regeneration operation. The estimated reproduction number is calculated and the calculated reproduction number is displayed on the display unit 74.

The expected reproduction time calculation function unit 730 is necessary to reproduce the expected reproduction time necessary for reproducing the amount of the raw material measured by the quantity measurement sensor 125, that is, the maximum possible number of sheets calculated by the expected reproduction number calculation function unit 722. When the operation time set by the time setting function unit exceeds the estimated reproduction time, a warning is issued to the display unit 74 that also serves as a warning means. For example, a warning is displayed as “the stored material will be used up in 5 hours”. Also, by measuring the weight when measuring the amount of raw material, a warning “If you put 50 A4-size standard paper in the standard paper tank 11, it can be operated in the set operation time. "Is displayed as a warning.

The user operates various switches such as a touch panel provided on the display unit 74 to set the desired number of recycled sheets within the expected number of reproductions in the target number setting function unit 718 as the reproduction target number. The expected reproduction time calculation function unit 726 calculates the estimated reproduction time required until the end of the reproduction operation for reproducing the target number of recycled paper, and displays the estimated reproduction time on the display unit 74. When the reproduction target number is the total number of expected reproductions, it is possible to omit the setting of the reproduction target number, and the expected reproduction time calculation function unit 726 will complete the reproduction operation for reproducing the total number of expected reproductions. The estimated reproduction time required is calculated, and the estimated reproduction time is displayed on the display unit 74.

Normally, the regeneration operation ends based on the operation time. However, the user operates the various switches such as a touch panel provided on the display unit 74, so that the operation stop selection function unit 725 uses the regeneration target number or the operation time as a reference. It is possible to select and set whether to stop the regeneration operation. When the reproduction target number is set as a reference, the reproduction completion number accumulated by the counter function unit 719 is set by the target number setting function unit 718 without being restricted by the limited time set by the time setting function unit 723. Regeneration operation is performed until When the operation time is set as a reference, the operation time accumulated by the operation time integration function unit 724 is a time even if the reproduction completion number accumulated by the counter function unit 719 does not reach the reproduction target number set by the target number setting function unit 718. When the limited time set by the setting function unit 723 is reached, the regeneration operation is stopped.

Furthermore, the user selects and sets either the power saving mode or the auto power off mode in the power mode selection function unit 727 by operating various switches such as a touch panel provided on the display unit 74. In the power saving mode, the used paper processing apparatus is set in a standby state with the minimum necessary power after the regeneration operation is completed, and in the auto power off mode, the used paper processing apparatus is completely stopped after the regeneration operation is completed.

Control from the start to the stop of the automatic operation by the control unit 7 is performed according to the flow sheet shown in FIG. That is, from the stop state 900, the operation start condition check 910, the operation preparation operation 920, the recycled paper preparation 930, the operation stop condition check 940, and the stop preparation operation 950 are performed to stop the apparatus 960.

In the operation start condition check 910, as shown in FIG. The operation start signal is an instruction signal input from the timing input unit 73 to the automatic operation control function unit 716. In this embodiment, the operation start signal is input when the internal clock reaches the scheduled time set by the time setting function unit 723. Signal.

In the operation preparation operation 920, as shown in FIG. 10, water is injected into the tank 921. And at the time of initial operation, the remaining water such as pumps and pipes is washed and discharged with fresh water to suppress the deterioration of quality. Water is poured into the remaining portions at a predetermined timing as necessary. That is, the required amount of water is poured into the pulper 14 and the pre-deinking dilution tank 22.

Next, the

heaters

143, 234, 235 are energized to perform a heating operation 922.

Next, it is judged 923 whether or not the water temperature of the pulper 14 and the deinking unit 23 measured by the

temperature sensors

144 and 238 and the surface temperature of the drying roller 353 measured by the temperature sensor 354 have reached the set temperature.

In the recycled paper production 930, the recycled pulp section control function section 711, the deinking pulp section control function section 712, the papermaking section control function section 713, the finishing section control function section 714, and the wastewater treatment section control function section 715 are respectively used. 1, the deinking pulp section 2, the papermaking section 3, the finishing section 4, and the wastewater treatment section 5 are controlled to perform the above-described operation.

During the recycled paper production 930, the expected reproduction number calculation function unit 722 of the control unit 7 includes a reproduction completion number accumulated by the counter function unit 719 and a remaining time calculated from the operation time accumulated by the operation time accumulation function unit 724. Then, the total number of predicted regeneration sheets that can be regenerated from the end of the regeneration operation to the end of the regeneration operation is recalculated, and the recalculated regeneration estimated number of sheets is displayed on the display unit 74.

In addition, when the user changes the time setting by the time setting function unit 723, the predicted reproduction number calculation function unit 722 of the control unit adds the reproduction completion number accumulated by the counter function unit 719 and the operation time accumulation function unit 724. Based on the remaining time after the setting change calculated from the operation time, the total number of reproducible reproductions that can be regenerated before the end of the regenerative operation is recalculated, and the recalculated reproducible reproduction number is displayed on the display unit 74.

Further, the control unit 7 measures the operation stop time while the regeneration operation is stopped by the operation stop time measurement function unit 728, and responds to the operation stop cause and the operation stop time determined by the operation stop cause determination function unit 729. To perform a preset maintenance operation.

For example, when the user gives an instruction to interrupt the regeneration operation by the operation interruption instruction means 75, the operation stop cause determination function unit 729 of the control unit 7 determines that the operation interruption instruction is the cause of the operation stop, and the operation stop time is a predetermined time. If it is within, the cleaning operation of the paper making unit 3 set in advance as the maintenance operation is executed. The operation stop cause determination function unit 729 determines that the operation stop instruction is the cause of the operation stop, and when the operation stop time exceeds a predetermined time, it is set as a discard operation, a drain operation, and a maintenance operation in advance for discarding the recycled paper during the regeneration operation. Perform the cleaning operation.

Further, when a power failure occurs, the operation stop cause determination function unit 729 of the control unit 7 determines that the power failure is the cause of the operation stop and performs the power failure recovery operation when the operation stop time is within a predetermined time. , The cleaning operation of the paper making unit 3 set in advance as a maintenance operation is executed, and when the operation stop cause determination function unit 729 determines that the power outage is the cause of the operation stop and the operation stop time exceeds a predetermined time, the power failure recovery operation is performed. After the execution, a discarding operation for discarding the recycled paper in the course of the recycling operation, a draining operation, and a cleaning operation set in advance as a maintenance operation are executed.

The content of the maintenance operation for the operation stop time can be arbitrarily changed by the user, and the user can arbitrarily change the setting of the reference value of the operation stop time. All operations are stopped during an emergency stop.

In the case of a user's arbitrary interruption request or abnormal stop (power failure, emergency stop), it is also possible to back up the situation before the stop and perform a process that can be recovered halfway. At the time of a power failure or emergency stop, it is also possible to issue a warning with a communication means such as a LAN, a device emergency stop lamp, or a buzzer sound. It is also possible to set and register in advance a specific part that allows the operation to be continued at the time of the interruption, for example, stirring of each tank, etc. at the time of an arbitrary interruption request of the user.

When a power failure occurs during drying, power is supplied to the finishing unit 4 from the standby power source, and the paper is discharged after the paper is dried by the residual heat of the dryer unit 35. If it is not completely dry, it can be configured to be discharged to a reject tray.

The battery provided as a backup power source is charged by commercial power or solar power generation, but a fuel cell can be used as the backup power source so that paper can be manually ejected when the remaining battery level is insufficient. Is also possible.

In the operation stop condition check 940, as shown in FIG. 9, it is determined 941 whether or not the end time has been reached. This end time is indicated by an instruction signal input from the timing input unit 73 to the automatic operation control function unit 716. In this embodiment, when the internal clock reaches the scheduled time, the operation scheduled from the start of operation is performed. This is an instruction signal that is input when the time has elapsed. If it is the end time, the operation proceeds to the stop preparation operation.

If it is not the end time, a determination 942 is made as to whether or not the set processing has been completed. The control unit 7 counts the number of times the paper making unit 3 is driven, or detects the completed recycled paper by a sensor (not shown) provided in the finishing unit 4, thereby determining the target number of prepared recycled papers. The counter function unit 719 counts, and the operation is stopped when the count value of the counter function unit 719 reaches the target number set by the user in the target number setting function unit 718. Therefore, excessive operation is suppressed and only the minimum operation required by the user is realized. When processing for the set amount is completed, the operation proceeds to the stop preparation operation.

If the processing for the set amount has not been completed, the amount measuring sensor 125 confirms 943 whether or not there is a cut paper piece inside the standard paper tank 11 and the shredder tank 12. If there is no cut paper piece, a warning 944 is displayed on the display unit 74, and the operation proceeds to the stop preparation operation. If there is a piece of cut paper, continue operation.

In the stop preparation operation 950, as shown in FIG. 11, the operation to stop 951 energization of the

heaters

143, 234, 235 is performed, and the surface temperature of the drying roller 353 measured by the temperature sensor 354 is lower than the set temperature. A determination 952 of whether or not is performed, and a fiber and water treatment 953 is performed.

In the fiber and water treatment 953, the operation is controlled by the drainage operation control function unit 720, the fibers remaining in the papermaking unit 3 are sent to the final position and reused, and other fibers are processed for disposal, and the drainage operation. As for water, it removes foreign matters, returns to neutral with chemicals and discharges it.

Next, a drive stop 954 is performed, and in cleaning 955 for each part performed as a maintenance operation, a cleaning operation is controlled by the cleaning operation control function unit 721 to automatically wash away fibers adhering to the tank or the belt with water. In addition, a cleaning operation is performed with cleaning water containing a preservative. The user can arbitrarily set the cleaning operation with the cleaning water containing the preservative. Next, in the treatment 956 for generated dust, moisture is removed from both the fiber and the ink to solidify.

In this way, the control unit 7 controls the recycled pulp unit 1, the deinking pulp unit 2, and the paper making unit 3 by the drainage operation control function unit 720 and the washing operation control function unit 721. By performing this maintenance operation, each part of the apparatus can be kept clean at all times, and as a result, the quality of recycled paper can be maintained.

As described above, in the present embodiment, the driving control by the automatic driving control function unit 716 can automatically start and stop driving even when the user is not on the spot, and can perform unattended driving at any time. Is possible. However, in the present embodiment, providing the manual start key and the manual stop key in the control unit 7 and manually operating the start and stop of the operation does not hinder the implementation of the present invention.

Claims

A raw material storage part for storing used paper or a cut piece of used paper as a recycled raw material, a recycled pulp part for separating recycled material to prepare recycled pulp, a paper making part for making recycled paper by making recycled pulp, A control unit that controls the operation, and a quantity measuring sensor that measures the amount of the raw material stored in the raw material storage part,
The control unit is an automatic operation control function unit that sequentially executes the operation process from the start of operation to the operation stop, and a time setting function that can arbitrarily set at least one of the scheduled operation start time and the scheduled operation end time And a timing input unit that inputs at least one of operation start and operation stop timing as an instruction signal to the automatic operation control function unit when an internal clock arranged in the control unit reaches the scheduled time. Calculated by the expected regeneration number calculation function unit that calculates the expected number of regeneration possible before the end of regeneration operation from the amount of raw material measured by the quantity measurement sensor, and the expected regeneration number calculation function unit A used paper processing apparatus comprising display means for displaying the expected number of recycled sheets.
A raw material storage part for storing used paper or a cut piece of used paper as a recycled raw material, a recycled pulp part for separating recycled material to prepare recycled pulp, a paper making part for making recycled paper by making recycled pulp, A control unit that controls the operation, and a quantity measuring sensor that measures the amount of the raw material stored in the raw material storage part,
The control unit can be regenerated from the amount of raw material measured by a quantity measurement sensor, an automatic operation control function unit that sequentially executes the operation process from the start of operation to operation stop, a time setting function unit that can arbitrarily set the operation time A predicted reproduction number calculation function unit that calculates the expected reproduction number that can be reproduced before the end of the regeneration operation, and a display means that displays the expected reproduction number calculated by the expected reproduction number calculation function unit. Used paper processing equipment.
Provided in the middle of the transfer path for transferring recycled pulp from the recycled pulp section to the papermaking section. The used paper processing apparatus according to claim 1, wherein the recycled paper is prepared by making deinked pulp.
3. The used paper processing according to claim 1, wherein the control unit includes a counter function unit that accumulates the number of completed recycled paper sheets, and displays the number of reproduced completed sheets accumulated by the counter function unit on a display unit. apparatus.
The control unit has a counter function unit that accumulates the number of recycled paper sheets that have been completely recycled. The used paper processing apparatus according to claim 1 or 2, wherein the estimated number of possible reproductions is recalculated and the expected number of reproductions to be recalculated is displayed on the display means.
The control unit has a counter function unit that accumulates the number of completed recycled paper sheets, and the estimated number of recycled sheets is calculated by the counter function unit and the remaining operation time that is changed by the time setting function unit. The used paper processing apparatus according to claim 1 or 2, wherein the estimated number of reproductions that can be regenerated from the time of the reproduction operation to the end of the reproduction operation is recalculated, and the estimated number of reproductions to be recalculated is displayed on the display means.
The control unit includes a counter function unit for accumulating the number of completed recycled paper sheets, a target number setting function unit for setting the target number of recycled paper sheets within the expected number of recycled papers, and an operating time integration system for integrating the operating time of the recycling operation. When the number of completed playbacks accumulated in the function unit and the counter function unit reaches the target number set in the target number setting function unit, the regeneration operation is stopped or the operation time accumulated in the operation time integration function unit is set as a time setting function. The used paper processing apparatus according to claim 1, further comprising an operation stop selection function unit that selectively sets whether to stop the regeneration operation when the operation time set by the unit is reached.
The control unit has a target number setting function unit that sets the target number of recycled paper within the expected number of recycled papers, and an expected reproduction time calculation function unit that calculates the expected reproduction time required for the end of the recycling operation for the target number of recycled papers. 3. The used paper processing apparatus according to claim 1, wherein the expected reproduction time is displayed on the display means.
The control unit is equipped with an expected regeneration time calculation function unit that calculates the expected regeneration time required to regenerate the raw material quantity measured by the quantity measurement sensor, and the expected regeneration time calculation function part is set by the time setting function part. The used paper processing apparatus according to claim 1 or 2, wherein a warning is issued by a warning means when the operation time exceeds the expected reproduction time.
3. The used paper processing apparatus according to claim 1, wherein the control unit includes a power mode selection function unit that selectively sets whether to execute the power saving mode or the auto power off mode after the end of the regeneration operation.
The used paper processing apparatus according to claim 1 or 2, wherein the control unit executes a drain operation and a preset maintenance operation after the regeneration operation ends.
12. The used paper processing apparatus according to claim 11, wherein the control unit executes a cleaning operation using a cleaning water containing a preservative as a maintenance operation after the drainage operation is completed.
The control unit has an operation stop time measurement function unit that measures the operation stop time while the regeneration operation is stopped, and an operation stop cause determination function unit that determines the operation stop cause. The used paper processing apparatus according to claim 1, wherein a maintenance operation set in advance is executed according to the operation.
The control unit has an operation interruption instruction means for instructing the user to interrupt the regeneration operation, and when the operation stop cause determination function unit determines that the operation stop instruction is the cause of the operation stop and the operation stop time is within a predetermined time. Execute the washing operation of the papermaking section set as the maintenance operation in advance, the operation stop cause determination function unit determines that the operation stop instruction is the cause of operation stop, and when the operation stop time exceeds the predetermined time, 14. The used paper processing apparatus according to claim 13, wherein a waste operation for discarding recycled paper, a drainage operation, and a cleaning operation set in advance as a maintenance operation are executed.
When the operation stop cause determination function unit determines that a power outage is the cause of the operation stop and the operation stop time is within a predetermined time, after executing the power outage recovery operation, the control unit Execute the washing operation, and when the operation stop cause determination function section determines that the power failure is the cause of the operation stop and the operation stop time exceeds the specified time, the power failure recovery operation is executed and then the recycled paper in the recycling operation is discarded The used paper processing apparatus according to claim 13, wherein a waste operation, a drain operation, and a cleaning operation set in advance as a maintenance operation are executed.