US20100276101A1 - Paper making device of used paper recycling apparatus and used paper recycling apparatus - Google Patents
Paper making device of used paper recycling apparatus and used paper recycling apparatus Download PDFInfo
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- US20100276101A1 US20100276101A1 US12/759,484 US75948410A US2010276101A1 US 20100276101 A1 US20100276101 A1 US 20100276101A1 US 75948410 A US75948410 A US 75948410A US 2010276101 A1 US2010276101 A1 US 2010276101A1
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- paper
- pulp
- mesh belt
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Definitions
- the present invention relates to a paper making device of used paper recycling apparatus and a used paper recycling apparatus, and more particularly to a paper making technology in a small used paper recycling apparatus of furniture size, installed at the site of origin of used paper, for recycling and processing into reusable paper at the site without discarding the generated used paper.
- Used paper of various types occurs not only in government offices or private companies, but also in daily life or general household. Used paper is usually discarded, incinerated, or disposed as refuse.
- This used paper recycling apparatus is a realization of used paper recycling technology of large scale such as used paper recycling plant in a small size that can be installed in a small shop or a room in general household, and includes, in an apparatus case of furniture size, a pulp making unit for macerating and beating used paper to manufacture used paper pulp, a paper making unit for making recycled paper from the used paper pulp manufactured in this pulp making unit, and a control unit for driving and controlling the pulp making unit and the paper making unit in cooperation, in which the pulp making unit is composed of a macerating unit for agitating, crushing and macerating the used paper, and a beating unit for beating the used paper macerated in this macerating unit.
- the used paper is agitated, macerated and beaten by the macerating unit of the pulp making unit, and made into pulp, and is further beaten and pulverized by the beating unit, and desired used paper pulp is obtained, and then this used paper pulp is processed in the paper making unit, that is, filtered and dewatered, squeezed and dewatered, and heated and dried, and recycled paper obtained.
- the used paper in the state of pulp, the used paper is decomposed into fiber level, and the printed characters and diagrams are completely decomposed and lost, and cannot be restored, so that leak or disclosure of confidential information or personal information composed in printed characters and diagrams can be securely prevented.
- the paper making device of the used paper recycling apparatus of the present invention is a paper making device for manufacturing recycled paper from the used paper pulp manufactured in the pulp making unit of a preceding process, in the used paper recycling apparatus of furniture size to be installed at the site of origin of the used paper, including a paper making process unit for making wet paper by making from the slurry-type pulp suspension mixed of used paper pulp and water sent from the pulp making unit, in which this paper making process unit has a paper making conveyor for manufacturing and conveying the pulp suspension, and this paper making conveyor is disposed and configured to drive a mesh belt of paper making mesh structure composed of numerous mesh cells while filtering and dewatering the pulp suspension, and the paper quality control condition of the mesh belt is set in a range of maintaining the pulp fibers in the pulp suspension supplied on the mesh belt in a non-directional and disorderly array state.
- Preferred embodiments include the following.
- the paper quality control condition of the mesh belt at least includes the running speed of the mesh belt and the running inclination angle of the mesh belt.
- the running speed of the mesh belt is set at 0.1 m/min 1.8 m/min.
- the mesh belt is disposed and configured so as to run obliquely upward and straightly toward its running direction.
- the upward inclination angle of the mesh belt is set at 3 degrees to 12 degrees.
- the paper making process unit is provided at a starting end position of the paper making process of the paper making conveyor, and includes a pulp supply unit for supplying the pulp suspension sent from the pulp making device into the paper making conveyor, and by this pulp supply unit, the pulp suspension is spread uniformly and supplied on the upper side of the mesh belt of the paper making conveyor.
- the paper making mesh structure of the mesh belt is composed so that the pulp suspension supplied on the mesh belt maybe filtered and dewatered to be wet paper of an appropriate weight in the process of the mesh belt running for a specified running distance.
- the mesh size of the mesh belt is 25 mesh cells to 80 mesh cells.
- the paper making process length of the mesh belt is set in a range of a straight running direction length of the mesh belt in the apparatus case of furniture size.
- the paper making process length of the mesh belt is set in relation to the running speed of the mesh belt and the paper making mesh structure, so that the pulp suspension may be manufactured into an appropriate weight, and that the paper making conveyor having the mesh belt may be contained within the apparatus case of furniture size.
- (10) Including the paper making process unit for obtaining wet paper by manufacturing from slurry-like pulp suspension composed of water and used paper pulp sent from the pulp making device, a drying process unit for obtaining recycled paper by drying the wet paper manufactured and formed in this paper making process unit, and a dewatering roll unit for squeezing and dewatering the wet paper at a linkage part of the paper making process unit and the drying process unit, the pulp suspension supplied from the pulp making device is manufactured, dewatered, and dried.
- the paper making conveyor includes the mesh belt as an endless belt for manufacturing and conveying the pulp suspension, and a drive motor for driving and moving the mesh belt.
- the used paper recycling apparatus of the present invention includes, in an apparatus case of furniture size, a pulp making unit for manufacturing used paper pulp by macerating and beating used paper, a paper making process unit for manufacturing recycled paper by making from the used paper pulp manufactured in this pulp making unit, and a control unit for driving and controlling the pulp making unit and the paper making process unit in cooperation, in which the paper making process unit is composed of the paper making device described above.
- the paper making device of the present invention is produced as a result of various tests and studies by the present inventor on the basis of the used paper recycling technology conventionally operated in a large-scale factor such as used paper recycling plant, realized as the used paper recycling technology of furniture size of the present invention.
- the present inventor previously realized the used paper recycling technology in a large-scale factory facility in the used paper recycling technology in an extremely compact process working space of furniture size, and further continued studies and experiments to improve the technology, and has found out that the used paper recycled paper as the final product has its special property, that is, the used paper processed at a specific location of installation of the used paper recycling apparatus tends to be processed and used repeatedly, along with the purpose of prevention of leak or disclosure of confidential information, personal information, and various forms of information.
- the present inventor also noticed that the recycled paper recycled in the used paper recycling apparatus of furniture size of the present invention also has the paper quality tending to withstand relatively this repeated regeneration, and repeated various studies and experiments in order to find out the cause, and finally discovered that the recycled paper does not show evidently the typical aspect of ordinary paper known as “texture of paper”.
- the paper making process for manufacturing wet paper from the slurry-like pulp suspension mixed with water and used paper pulp sent from the pulp making device of the preceding process includes a paper making conveyor for manufacturing and conveying the pulp suspension, and this paper making conveyor is disposed and configured to run the mesh belt of paper making mesh structure composed of numerous mesh cells while filtering and dewatering the pulp suspension, and the paper quality condition of the mesh belt is set in a range of holding the pulp fibers in the pulp suspension supplied on the mesh belt in a non-directional and disorderly array state, and therefore the produced recycled paper is free from so-called “texture of paper”, and the paper quality is uniform without difference in longitudinal and lateral direction, and is sufficiently usable in strength.
- the invention realizes and presents a used paper recycling apparatus of furniture size that can be installed not only in a large office, but also in a small shop or a general household, being friendly to the environment, low in running cost, capable of preventing leak or disclosure of confidential information, personal information, and various types of information, and capable of maintaining a high confidentiality.
- FIG. 1 is a front sectional view of an overall outline configuration of a used paper recycling apparatus in a preferred embodiment of the present invention.
- FIG. 2 is a side sectional view of an overall outline configuration of the same used paper recycling apparatus.
- FIG. 3 is a circuit diagram of configuration of a used paper circulation route of a beating unit of the used paper recycling apparatus.
- FIG. 4 is a block diagram of configuration of a pulp concentration adjustment unit of the used paper recycling apparatus.
- FIG. 5 is a perspective view of outline configuration of a paper making unit of the used paper recycling apparatus.
- FIG. 6 is a perspective magnified view of configuration of a pulp suspension supply location of a paper making process unit in the paper making device.
- FIG. 7 is a perspective view of outline configuration of the used paper recycling apparatus.
- FIG. 8 is a front view explaining the paper quality of the recycled paper recycled in the used paper recycling apparatus.
- FIG. 9 is a front view explaining the paper quality of ordinary paper generally available on market.
- the used paper recycling apparatus of the present invention is shown in FIG. 1 to FIG. 7 , and this used paper recycling apparatus 1 is specifically installed at the site of origin of used paper, and it is an apparatus for recycling into a re-usable paper at the site without discarding the generated used paper UP, and the used paper UP includes confidential documents of government offices or private companies, personal letters and others in the general household, and other used and unnecessary documents.
- the used paper recycling apparatus 1 is a furniture size as shown in FIG. 7 , that is, small in size and shape similar to furniture, such as document rack, locker, office desk, copier or personal computer used in an office, and mainly includes, as shown in FIG. 1 , a pulp making unit (pulp making device) 2 , a pulp concentration adjustment unit 3 , a paper making unit (paper making device) 4 , and an apparatus control unit (control unit) 5 .
- the apparatus case 6 is a furniture size as mentioned above, and specific dimensions and shapes may be designed appropriately depending on the purpose or application.
- the apparatus case 6 in the shown preferred embodiment is a rectangular box having dimensions and shapes similar to a copier installed and used in a general office, and the top plate of the apparatus case 6 has an inlet 7 which is opened and closed for supplying used paper UP, and an outlet 8 is provided at the side for discharging recycled paper RP, RP, . . . .
- a recycled paper receiving tray 9 is detachably provided for receiving recycled paper RP, RP, . . . discharged from the outlet 8 .
- the pulp making unit 2 is a process for manufacturing used paper pulp by macerating and beating the used paper UP, and is composed of a macerating unit 20 for agitating, crushing and macerating the used paper UP, and a beating unit 21 for beating the used paper UP macerated in the macerating unit 20 .
- the macerating unit 20 is a process for agitating, crushing and macerating the used paper UP, and is mainly composed of a macerating tank 25 , an agitating device 26 , and a water feed device 27 .
- the macerating tank 25 has the inlet 7 formed in its ceiling wall as shown in FIG. 2 for charging and supplying the used paper UP, and a discharge port 28 is provided in its bottom wall for discharging the macerated used paper pulp UPP to the downstream side.
- the inner volume of the macerating tank 25 is determined depending on the number of sheets of used paper UP to be processed in batch.
- the macerating tank 25 has a capacity of agitating and treating (in batch) a total of about 500 sheets (about 2000 g) of used paper UP of A4 format PPC (plain paper copier) by adding about 98 liters of water.
- the concentration of the used paper pulp UPP to be macerated is about 2%. The concentration is adjusted by supplying water from the water feed device 27 , and this water feed device 27 is a part of the pulp concentration unit 3 described below.
- the inlet 7 has a structure to be opened and closed to the outside of a case cover 6 a of the apparatus case 6 , the discharge port 28 is opened and closed by an opening and closing valve 29 , and communicates with a used paper pulp circulation route 49 described below.
- a debris filter 30 is provided for removing obstacles for the next beating process, such as clips, staples, pins and others used for binding the used paper UP, UP, . . . .
- the opening and closing valve 29 opens and closes specifically by the crank motion of a crank mechanism 36 driven by a drive motor 35 .
- the drive motor 35 is specifically an electric motor, and this drive motor 35 is electrically connected to the apparatus control unit 5 .
- the agitating device 26 is provided inside of the macerating tank 25 , and includes an agitation impeller 40 and a drive motor 41 .
- the agitation impeller 40 has its rotation shaft 40 a supported rotatably in an upright position in the central position of the bottom of the maceration tank 25 , and is rotatable in the horizontal direction, and the lower end of the rotation shaft 40 a is driven and coupled to a rotation shaft 41 a of the drive motor 41 by way of transmission means 42 composed of a transmission pulley 42 a, a transmission belt 42 b, and a transmission pulley 42 c.
- the water feed device 27 is to supply water into the macerating tank 25 , and forms a beating concentration adjustment unit 3 A of the pulp concentration adjustment unit 3 as described below.
- the water feed device 27 in the illustrated preferred embodiment includes, as shown in FIG. 1 , a white water collection tank 45 , a water feed pump 46 for beating concentration adjustment, and a water feed tank 47 for paper making concentration adjustment.
- the white water collection tank 45 is, as described below, designed to collect white water W (pulp water of very low concentration filtered through a paper making mesh in the paper making process) filtered and dewatered in the paper making unit 4 , and the white water W collected in the white water collection tank 45 is first supplied into the macerating tank 25 from the water feed pump 46 , and then into a concentration adjustment tank 85 described below from the water feed pump 47 .
- a weight sensor 48 is provided in the bottom of the macerating tank 25 , and the used paper UP, UP, . . . and the water to be processed in batch in the macerating tank 25 are weighed and controlled, and the weight sensor 48 is electrically connected to the apparatus control unit 5 .
- the weight sensor 48 of the illustrated preferred embodiment is a load cell, and is designed to sense and measure the total weight of weight of used paper UP, UP, . . . and water charged and supplied in the macerating tank 25 .
- the weight is sensed and measured by the weight sensor 48 , and the water feed device 27 is driven, and the water W corresponding to the measured weight is supplied by the water feed pump 46 into the macerating tank 25 from the white water collection tank 45 .
- the used paper UP, UP, . . . charged into the macerating tank 25 from the charging opening of the apparatus case 6 , that is, the inlet 7 are agitated and mixed for a specified time (10 to 20 minutes in the illustrated preferred embodiment) in the water supplied from the water feed device 27 by normal and reverse rotation of the agitation impeller 40 by the drive motor 41 , and thereby the used paper UP, UP, . . . are macerated and beaten into used paper pulp UPP.
- the discharge port 28 of the macerating tank 25 is closed by the opening and closing valve 29 during operation of the macerating unit 20 , and flow of used paper UP or used paper pulp UPP from the macerating tank 25 into the used paper pulp circulation route 49 is blocked, while the inlet 7 is opened by the opening and closing valve 29 during operation of the beating unit 21 described later, and the flowing and circulating loop of the used paper pulp UPP from the macerating tank 25 into the used paper pulp circulation route 49 is allowed.
- the beating unit 21 is a process for beating the used paper UP macerated in the macerating unit 20 , and is specifically designed to pressurize and beat the used paper UP macerated in the macerating unit 20 , and to grind and pulverize (into micro-fibers) the inks forming characters and patterns on the used paper UP (printing inks forming characters and patterns on the used paper UP by various printing technologies, or inks forming characters and patterns on the used paper UP by pencil, ball-point pen, fountain pen, and other writing tools)
- This beating unit 21 mainly includes a grinder 50 .
- This grinder 50 includes, as shown in FIG. 3 , a pair of beating disks 51 , 52 rotated and driven relatively, and the pair of beating disks 51 , 52 have beating action surfaces 51 a, 52 a disposed oppositely and concentrically across a tiny beating gap G.
- the beating gap G of the beating action surfaces 51 a, 52 a of the grinder 50 is determined so as to be narrowed gradually, as described below, from the grinder 50 in an initial period of beating process to the grinder 50 in a later period.
- the used paper pulp circulation route 49 having the grinder 50 is formed, and the used paper pulp UP is circulated and beaten for a specified time by way of the grinder 50 in a circulation system.
- one grinder 50 carries out the whole beating process throughout the entire process of the beating process, and this one grinder 50 has the functions of a plurality of grinders from the grinder in an initial period of beating process to the grinder in a later period. More specifically, the beating gap G of the beating action surfaces 51 a, 52 a of the grinder 50 is controlled and adjusted so as to be narrower gradually from the initial period to the final period of the beating process.
- the grinder 50 of the illustrated preferred embodiment is disposed, as shown in FIG. 2 , adjacently to the macerating tank 25 of the macerating unit 20 , on an apparatus machine body 54 composing the apparatus case 6 , and as shown in FIG. 3 , it further includes a beating tank 55 communicating with the macerating tank 25 of the macerating unit 20 , the pair of beating disks 51 , 52 provided relatively and rotatably in this beating tank 55 , a rotation drive source 56 for relatively rotating the pair of beating disks 51 , 52 , and gap adjusting means 57 for adjusting the beating gap G of the pair of beating disks 51 , 52 .
- the beating tank 55 is formed in a closed cylindrical shape for accommodating the pair of beating disks 51 , 52 , and has a supply port 55 a for supplying the used paper pulp UPP from the upstream side, and a discharge port 55 b for discharging the beaten used paper pulp UPP to the downstream side.
- the supply port 55 a is opened in the center of the bottom of the beating tank 55 toward the vertical direction, and the discharge port 55 b is opened at the cylindrical side of the beating tank 55 toward the horizontal direction.
- the supply port 55 a and the discharge port 55 b are connected to communicate with the macerating tank 25 of the macerating unit 20 , respectively by way of circulation pipings 49 a, 49 b as shown in FIG. 3 , and the discharge port 55 b is further connected to communicate with a used paper pulp collection tank 60 by way of a discharge piping 59 .
- Reference numeral 61 shows a direction changeover valve, by the changeover operation of this direction changeover valve 61 , the used paper pulp UPP discharged from the discharge port 55 b is selectively returned to the macerating tank 25 , or collected in the used paper pulp collection tank 60 .
- the direction changeover valve 61 is specifically an electromagnetic opening and closing valve, and is electrically connected to the apparatus control unit 5 .
- the pair of beating disks 51 , 52 one is a fixed side beating disk fixed in the rotating direction, and other is a rotating side beating disk which is rotatable.
- the upper side beating disk 51 is the rotating side
- the lower side beating disk 52 is the fixed side
- the rotating side beating disk 51 of the upper side is disposed oppositely to the fixed side beating disk 52 of the lower side, concentrically and rotatably across a tiny beating gap G.
- the rotating side beating disk 51 is driven and coupled to a drive motor 56 by way of a rotation main shaft 64 pivoted rotatably to the fixed side of the apparatus machine body 54 and movably in the axial direction.
- the rotation main shaft 64 is rotatably pivoted on an elevating member of the gap adjusting means 57 , and the rotating side beating disk 51 is concentrically and integrally attached at its leading end, and its base end part is driven and coupled integrally in the rotating direction and relatively movably in the axial direction on the rotation shaft of the drive motor 56 .
- the drive motor 56 is a rotation drive source, and relatively rotates the pair of beating disks 51 , 52 , and specifically an electric motor is used, and the drive motor 56 as its drive source is electrically connected to the apparatus control unit 5 .
- the opposite sides 51 a, 52 a of the both beating disks 51 , 52 forming the tiny beating gap G mutually collaborate to form beating action surfaces.
- These opposite beating action surfaces 51 a, 52 a are formed as wheel surfaces having a multiplicity of abrasive grains bonded by a bonding agent.
- the both beating action surfaces 51 a, 52 a are, as shown in FIG. 3 , formed in a taper shape continuously increased in the diameter size in the mutually opposite directions, and are formed as annular flat surfaces parallel to each other at the outermost peripheral edges, and these annular flat surfaces form the beating gap G.
- an inlet 70 is formed to communicate coaxially with the supply port 55 a of the beating tank, and the two annular flat surfaces formed on the outer peripheral edges of the beating action surfaces 51 a, 52 a of the pair of beating disks 51 , 52 form an outlet 71 communicating with the discharge port 55 b of the beating tank 55 and having the beating gap G.
- a plurality of blades 72 , 72 , . . . are formed at specified intervals in the circumferential direction, and these blades 72 , 72 , . . . push out the used paper pulp UPP discharged from the outlet 71 in pumping action toward the discharge port 55 b of the beating tank 55 by centrifugal force by rotation of the rotating side beating disk 51 .
- the drive motor 56 as the drive source, when the rotating side beating disk 51 is rotated and driven to the fixed side beating disk 52 , the used paper pulp UPP supplied into a beating gap B by way of the supply port 55 a of the beating tank 55 and the inlet 70 from the macerating tank 25 of the macerating unit 20 flows into the beating space B from the inlet 70 , and passes through this beating space B, and is pressurized and beaten by the relatively rotating beating action surfaces 51 a, 52 a, and the inks forming the characters and patterns on the used paper UP are ground and pulverized, and then it is discharged by way of the discharge port 55 b of the beating tank 55 from the outlet 71 .
- the used paper pulp UPP is further pressurized and beaten at the location of the outlet 71 having the beating gap G, and is pulverized to a specified micron size (to become micro-fiber) defined by this beating gap G.
- this one grinder 50 has the functions of a plurality of grinders from the grinder in an initial period of beating process to the grinder in a terminal period, and more specifically, the beating gap G of the grinder 50 is controlled and adjusted by the gap adjusting means 57 so as to be narrower gradually from the initial period to the final period of the beating process.
- the gap adjusting means 57 is not particularly illustrated, but is designed to move the pair of beating disks 51 , 52 relatively in the rotation axial direction, to control and adjust the beating gap G of these beating disks 51 , 52 , and is mainly composed of moving means (not shown) for moving the rotating side beating disk 51 in the rotation axial direction, that is, in the axial direction of a rotation main shaft 64 , and a drive source 66 for driving this moving means.
- the drive source is specifically an electric motor, and this drive motor 66 is electrically connected to the apparatus control unit 5 .
- this electric motor 66 By the rotation of this electric motor 66 , the rotating main shaft 64 is moved up and down by way of the moving means, and therefore the rotating side beating disk 51 formed integrally with the rotation main shaft 64 is moved in the vertical direction to the fixed side beating disk 52 , that is, in the rotation axial direction, and the beating gap G between the two beating disks 51 , 52 is controlled and adjusted.
- a position detection sensor (not shown) is provided for detecting the ascending and descending position of the rotating side beating disk 51 , and depending on the result of detection by this position detection sensor, the drive motor 66 is driven and controlled.
- the position detection sensor is electrically connected to the apparatus control unit 5 .
- the beating gap G of the beating disks 51 , 52 is controlled and adjusted by the gap adjusting means 57 in the circulation system beating process by the used paper pulp circulation route 49 shown in FIG. 3 , in mutual interaction with a circulation pump 69 which is circulating means.
- the used paper pulp UPP macerated by the macerating unit 20 is circulated through the used paper pulp circulation route 49 by the circulation pump 69 , and is beaten by the grinder 50 , and at this time the beating gap G of the beating action surfaces 51 a, 52 a of the grinder 50 is controlled by the gap adjusting means 57 so as to be narrower gradually from the initial period to the terminal period of the beating process.
- the macerating tank 25 of the macerating unit 20 is included, and in this beating process, the agitating device 26 of the macerating unit 20 is driven and controlled, and the macerating unit 20 is driven simultaneously with the beating unit 21 .
- the used paper pulp UPP flows out into the used paper pulp circulation route 49 from the macerating tank 25 , while the used paper pulp UPP beaten by the grinder 50 flows into the macerating tank 25 , and therefore in the macerating tank 25 , the used paper pulp UPP of different degrees of beating is mixed, and by the agitating action by the agitating device 26 , the degree of beating of the used paper pulp UPP in the macerating tank 25 is made uniform, and the beating process is promoted.
- the used paper pulp collection tank 60 is a location for collecting the used paper pulp UPP beaten and pulverized to a desired size by the beating unit 21 , and the used paper pulp UPP collected herein is mixed and adjusted to a paper making concentration corresponding to the finished paper quality of the recycled paper RP to be recycled as a pulp suspension PS, and is sent to the paper making unit 4 in a next paper making process.
- the pulp concentration adjusting unit 3 is weight type device for adjusting the concentration of the used paper pulp UPP supplied in the paper making unit 4 , by measuring the weight and adjusting the mixing rate of used paper UP and water W supplied into the apparatus, and more specifically as shown in FIG. 4 , it includes a beating concentration adjusting unit 3 A, a paper making concentration adjusting unit 3 B, and a pulp concentration control unit 3 C.
- the beating concentration adjusting unit 3 A is to adjust the beating concentration of the used paper pulp UPP in the pulp making unit 2 , corresponding to the beating efficiency by the beating unit 21 , and as mentioned above, it is mainly composed of the water feed pump 46 and the beating concentration control unit 75 for adjusting the beating concentration of the water feed device 27 .
- the supply amount of white water W by the water feed pump 46 of the beating concentration adjusting unit 3 A is preferred to be set so that the beating concentration of the used paper pulp UPP macerated and beaten by the agitating device 26 may be, for example, the maximum concentration allowable for the beating capacity of the grinder 50 of the beating unit 21 for executing the next step of the beating process, and in the illustrated preferred embodiment, it is set to be a beating concentration of about 2% as mentioned above.
- the beating concentration control unit 75 drives and controls the water feed pump 46 so as to supply a necessary amount of water into the macerating tank 25 , as mentioned above, depending on the result of measurement from the weight sensor 48 .
- This beating concentration control unit 75 composes a part of the apparatus control unit 5 as described below.
- the paper making concentration adjusting unit 3 B is to adjust the paper making concentration of the used paper pulp UPP in the paper making unit 4 , to an appropriate concentration corresponding to the finished paper quality of the recycled paper RP to be recycled, and is more specifically designed to adjust the concentration of the used paper pulp UPP manufactured in the pulp making unit 2 by a division system, and it mainly includes a division extraction unit 80 , a suspension preparing unit 81 , and a paper making concentration control unit 82 .
- the division extraction unit 80 is to divide and extract by a specified small portion from the total volume of the used paper pulp UPP manufactured in the pulp making unit 2 in the preceding process, and includes a used paper pulp supply pump 86 for division and extraction for extracting the used paper pulp UPP of the used paper pulp collection tank 60 and sending to a concentration adjusting tank 85 .
- the suspension preparing unit 81 is to prepare a pulp suspension PS of a specified concentration by adding a prescribed amount of water W for concentration adjustment to the specified small portion of the used paper pulp UPP divided and extracted by the division extraction unit 80 , and mainly includes a water feed pump 47 of the water feed device 27 .
- a weight sensor 87 composed of a load cell is provided, and is designed to measure and control the amount of the used paper pulp UPP and water W for concentration adjustment supplied into the concentration adjusting tank 85 , and the weight sensor 87 is electrically connected to the apparatus control unit 5 .
- the paper making concentration control unit 82 controls by interacting the division extraction unit 80 and the suspension preparing unit 81 , and forms a part of the apparatus control unit 5 , and controls the pumps 86 , 47 of the division extraction unit 80 and the suspension preparing unit 81 by interaction so as to execute the following step of the paper making concentration adjusting process.
- the used paper pulp UPP of a specified portion (1 L in the illustrated preferred embodiment) is divided by the used paper pulp supply pump 86 , and is transferred and contained in the concentration adjusting tank 85 .
- its weight is sensed and measured by the weight sensor 87 , and the result is sent to the apparatus control unit 5 .
- diluting water W is supplied by the water feed pump 47 into the concentration adjusting tank 85 from the white water collection tank 45 by a specified volume (9 L in the illustrated preferred embodiment, actually as weighed and measured by the weight sensor 87 )
- the concentration adjusting tank 85 the used paper pulp UPP of beating concentration (2% in the illustrated preferred embodiment) and the water W are mixed and diluted, and a pulp suspension PS of a specified concentration (about 0.2% concentration or target concentration in the illustrated preferred embodiment) is mixed and prepared.
- the target concentration of the pulp suspension PS to be prepared is determined in consideration of the paper making capacity in the paper making unit 4 described below on the basis of the results of the preliminary experiment, and it is set to about 0.2% in the illustrated preferred embodiment as mentioned above.
- the pulp suspension PS prepared to the paper making concentration (0.2%) of the target concentration in the concentration adjusting tank 85 is transferred and supplied into a pulp supply tank 89 from the concentration adjusting tank 85 by a first suspension supply pump 88 , and is stored in preparation for the next process of paper making unit 4 . Thereafter, this paper making concentration adjustment process is repeated similarly for the entire volume of the used paper pulp UPP in the used paper pulp collection tank 60 .
- the pulp supply tank 89 is provided with a second suspension supply pump 90 for sending the pulp suspension PS into a paper making process unit 95 of the paper making unit 4 .
- An agitating device 91 is provided in the pulp supply tank 89 , and by the agitating action of this agitating device 91 , the paper making concentration of the entire stored and held pulp suspension PS is uniformly kept at a specific value.
- the concentration adjustment by the paper making concentration adjusting unit 3 is not done in batch of whole volume, but is done in divided portions, that is, in small portions, and the water consumption is saved substantially, and the concentration adjusting tank 85 can be reduced in size and shape substantially, and hence the used paper recycling apparatus 1 is entirely built in a compact design.
- the pulp concentration control unit 3 C is to drive and control the beating concentration adjusting unit 3 A and the paper making concentration adjusting unit 3 B in interlock, and specifically by receiving the pulp concentration control information (the charging amount of the used paper UP, the water supply amount into the macerating tank 25 , the beating concentration of the used paper pulp UPP, etc.) from the beating concentration control unit 75 of the beating concentration adjusting unit 3 A, the paper making concentration information (the target paper making concentration of the used paper pulp UPP, the division extraction amount of the used paper pulp UPP from the used paper pulp collection tank 60 , the water supply amount into the concentration adjusting tank 85 , etc.) for adjusting the concentration of the used paper pulp UPP manufactured in the pulp making unit 2 to the target concentration (the paper making concentration) depending on this control information sent to the paper making concentration control unit 82 of the paper making concentration adjusting unit 3 B, and thereby the paper making concentration adjusting process is executed.
- the pulp concentration control information the charging amount of the used paper UP, the water supply amount into the macerating tank 25 , the beating
- the paper making unit (the paper making device) 4 is a process for manufacturing recycled paper RP from the used paper pulp UPP manufactured in the pulp making unit 2 , and is mainly composed of a paper making process unit 95 , a dewatering roll unit 96 , and a drying process unit 97 .
- the paper making process unit 95 is a location for making wet paper RP 0 by making from slurry-like pulp suspension PS composed of the water W and the used paper pulp UPP sent from the pulp supply tank 89 of the pulp making unit 2 , and mainly includes a paper making conveyor 100 and a pulp supply unit 101 .
- the paper making conveyor 100 is for conveying the pulp suspension while making paper therefrom, and a mesh belt 105 of paper making mesh structure composed of numerous mesh cells is disposed for filtering and dewatering the pulp suspension PS while running.
- the paper making conveyor 100 includes the mesh belt 105 of an endless belt form for conveying the pulp suspension PS while making paper therefrom, and a drive motor 106 for driving and moving this mesh belt 105 .
- the mesh belt 105 is specifically an endless belt formed of plate members of specified width having a paper making mesh structure composed of numerous mesh cells for filtering and dewatering the pulp suspension PS, connected in an annular form of a specified length.
- the plate member of the paper making mesh structure for composing the mesh belt 105 is a material capable of filtering and dewatering the pulp suspension PS appropriately by way of the numerous mesh cells of the paper making mesh structure, and preferred materials include polypropylene (PP), polyethylene terephthalate (PET), polyamide (PA) (generally known as Nylon, a registered trademark), stainless steel (SUS), and other corrosion resistant materials, and in the illustrated preferred embodiment, a PET-made mesh belt 105 excellent in heat resistance is used.
- PP polypropylene
- PET polyethylene terephthalate
- PA polyamide
- SUS stainless steel
- the paper making mesh structure of the mesh belt is composed so as to obtain wet paper RP 0 of an appropriate weight in the process of the pulp suspension PS supplied on the mesh belt 105 being filtered and dewatered while the mesh belt 105 is running for a specified running distance, and preferably a smooth material of fine mesh cells and fine weaving cells is used.
- a specific paper making mesh structure of the mesh belt is selected depending on the desired characteristics of the obtained paper, and in particular the following points are taken into consideration.
- the mesh size of the mesh belt 105 is preferably 25 mesh cells to 80 mesh cells, and in the illustrated preferred embodiment, the mesh belt 105 of 50 mesh cells is used.
- the mesh structure of the mesh belt 105 is determined not only by the mesh size (mesh cells) but also by the mesh fiber diameter. At the same number of mesh cells, when the fiber diameter is larger, the mesh size is smaller, a when the diameter is smaller, the mesh size is larger, and this relation is expressed by the mesh voids or air permeability (cm 3 /cm 2 /sec), that is, the rate of permeating air.
- the weaving method of mesh cells of the mesh belt 105 includes single weaving, double weaving, varying method of warp diameter and weft diameter, and others, and in multiple weaving method, it is necessary to increase the diameter of the roll for rotating and supporting the mesh belt 105 as described below, and the apparatus is increased in size, therefore, in the illustrated preferred embodiment, the mesh belt 105 of single weaving is used.
- the mesh belt 105 is formed in a mesh structure small in mesh fiber diameter, large in the number of mesh cells, and not lowered in the permeability, in order to prevent the used paper pulp UPP from slipping out of the mesh cells of the mesh belt 105 in the paper making process, and in the illustrated preferred embodiment, the mesh belt 105 is a 50-mesh PET-made mesh belt 105 of plain weaving. This mesh belt 105 has been experimentally proved to produce an excellent paper quality without causing any particular problem.
- the width dimension of the mesh belt 105 set at a specified width dimension slightly larger than the width dimension of the reproduced paper RP to be manufactured from the pulp suspension PS.
- the mesh belt 105 is, as shown in FIG. 1 and FIG. 5 , suspended and supported rotatably by way of a drive roller 107 , a drive roller 108 , a support roller 109 , and a dewatering roll unit 96 , and is driven and coupled to the drive motor 106 by way of the drive roller 107 .
- the paper making process length in the mesh belt 105 is determined in a range of straight running direction length of the mesh belt 105 in the apparatus case 6 of furniture size, specifically, in a range of upper side running direction length of the mesh belt 105 (in the illustrated preferred embodiment, the lateral direction length from the pulp supply unit 101 to the dewatering roll unit 96 in FIG. 1 ).
- the paper making process length of the mesh belt 105 is prescribed to be sufficient for manufacturing a proper weight of paper from the pulp suspension PS, in relation to the filtering and dewatering rate of the mesh structure, and the running speed of the mesh belt 105 described below, and also for accommodating the paper making conveyor 100 having the mesh belt 105 to be contained in the apparatus case 6 of furniture size.
- the paper quality control condition of the mesh belt 105 including the paper making mesh structure of the mesh belt 105 that is, the condition for determining the paper quality of the recycled paper RP finally recycled in the paper making unit 4 is determined in a range of holding the pulp fibers in the pulp suspension PS to be supplied on the mesh belt 105 in a direction-free and disorderly array state.
- the present inventor also noticed that the recycled paper RP recycled in the used paper recycling apparatus of furniture size of the present invention also has the paper quality tending to withstand relatively this repeated regeneration, and repeated various studies and experiments in order to find out the cause, and finally discovered that the recycled paper does not show evidently the typical aspect of ordinary paper known as “texture of paper”.
- the ordinary paper sold on market has the “texture of paper” appearing in the running direction (longitudinal direction) of paper making, and it shows the direction of paper fibers, and when the longer side of a rectangular cut piece of paper is parallel to the “texture of paper”, it is called “paper of longitudinal texture,” and the paper at right angle to the “texture of paper” is called “paper of lateral texture”, and the paper quality is anisotropic.
- the recycled paper RP recycled from the pulp suspension PS does not show any typical aspect of ordinary paper known as “texture of paper”, and shown in FIG. 8 , when the recycled paper RP is torn parallel to the running direction (see arrow) (see fissure (a) in FIG. 8 ), or at right angle (see fissure (b) in FIG. 8 ), the paper is torn similarly and the paper quality is uniform in anisotropy not different in longitudinal or lateral direction, and the strength is experimentally proved to be sufficiently durable in practical use.
- the paper quality control condition of the mesh belt 105 includes at least the running speed of the mesh belt 105 and the running inclination angle ⁇ of the mesh belt 105 , and also includes the condition of the mesh wire structure of the mesh belt 105 mentioned above.
- the running speed of the mesh belt 105 is set in consideration of the conditions mentioned above, and is preferably set at 0.1 m/min to 1.8 m/min, or more preferably at 0.3 m/min to 1.0 m/min, and at 0.5 m/min in the illustrated preferred embodiment.
- the running speed of the mesh belt of this type is set at least at 100 m/min or more, or even more than 1000 m/min in a faster version.
- the running speed of the mesh belt 105 is related not only to the array sate of pulp fibers in the pulp suspension PS, but also to the weight of the wet paper RP 0 in the paper making process, and the weight increases when the running speed of the mesh belt 105 is decreased, and the weight drops when the running speed picks up.
- the degree of beating of the used paper pulp UPP influences water filtering of the mesh belt 105 , and when the beating degree and the pulp concentration are constant, a specific weight can be obtained.
- the mesh belt 105 in the illustrated preferred embodiment is disposed so as to run obliquely and straightly toward its running direction, as shown in FIG. 1 , FIG. 5 , and FIG. 6 , and in the limited space of installation, the paper making process length can be extended considerably, and the filtering and dewatering rate is enhanced in the relation with the paper making mesh structure of the mesh belt 105 .
- the running inclination angle ⁇ of the mesh belt 105 is preferably set at 3 degrees to 12 degrees, or at 12 degrees in the illustrated preferred embodiment.
- the drive motor 106 for moving and driving the mesh belt 105 is specifically an electric motor, and is connected electrically to the apparatus control unit 5 .
- This drive motor 106 is also used as the running and driving source of the dewatering roll unit 96 and the drying process unit 97 described below.
- the pulp supply unit 101 is a location for supplying a pulp suspension PS onto the mesh belt 105 from the pulp making unit 2 , and as shown in FIG. 6 , it is provided at the start end position of the paper making process of the paper making conveyor 100 , and the pulp suspension PS is diffused and supplied uniformly on the top surface of the mesh belt 105 by this pulp supply unit 101 .
- the pulp suspension PS supplied into the pulp supply unit 101 from the pulp supply tank 89 is stored and reserved by a specified amount in this pulp supply unit 101 , and by this reserving action, it is diffused uniformly on the top surface of the mesh belt 105 .
- the pulp suspension PS diffused uniformly on the top surface of the mesh belt 105 is conveyed together with the mesh belt 105 by the driving action of the mesh belt 105 in the arrow direction, and is filtered by weight by the mesh cells of the mesh belt 105 , and is dewatered, and wet paper RP 0 is obtained.
- the pulp fibers in the pulp suspension PS on the mesh belt 105 are filtered and dewatered directly in a non-directional and disorderly array state as mentioned above, and “texture of paper” does not appear at all on the recycled paper RP as described below.
- the white water W filtered and dewatered by this mesh belt 105 (pulp water of ultra-low concentration filtered by the paper making mesh in the paper making process) is collected in the white water collection tank 45 of the water feed device 27 as mentioned above.
- the dewatering roll unit 96 forms a location for squeezing and dewatering the wet paper RP 0 on the mesh belt 105 at the linkage position of the paper making process unit 95 and the drying process unit 97 described below.
- a smooth surface belt 145 mentioned below of the drying process unit 97 at the downstream side, and the mesh belt 105 of the paper making process unit 95 at the upstream side are disposed in upper and lower layers as shown in FIG. 1 , and the upper and lower adjacent portions of the smooth surface belt 145 and the mesh belt 105 are formed at the linkage portion, and at this linkage portion, the dewatering roll unit 96 rolls and compresses the mesh belt 105 and the smooth surface belt 145 from upper and lower sides, thereby dewatering the wet paper.
- the dewatering roll unit 96 includes at least a preliminary dewatering roll unit 96 A, and a final dewatering roll unit 96 B as principal components.
- the dewatering roll unit 96 in the illustrated preferred embodiment includes, as specifically shown in FIG. 1 , the preliminary dewatering roll unit 96 A, the final dewatering roll unit 96 B, and an angle defining roll unit 96 C as assisting means, as principal components.
- the preliminary dewatering roll unit 96 A is for squeezing and dewatering preliminarily the wet paper RP 0 on the mesh belt 105 , and specifically includes a preliminary squeezing roll pair 122 consisting of a preliminary dewatering roll 120 rolling on the mesh belt 105 from the lower side, and a preliminary press roll 121 rolling and pressurizing on the smooth surface belt 145 from the upper side in collaboration with the preliminary dewatering roll 120 .
- the preliminary squeezing roll pair 122 consisting of the preliminary dewatering roll 120 and the preliminary press roll 121 , the mesh belt 105 and the smooth surface belt 145 are rolled and squeezed from both upper and lower sides at a specified preliminary pressure in a compressed state, and the water content in the wet paper RP 0 on the mesh belt 105 is removed preliminarily.
- the preliminary pressure that is, the preliminary squeezing force of the preliminary dewatering roll 96 A for preliminarily squeezing and dewatering the wet paper RP 0 on the mesh belt 105 is set at a magnitude so as not to destroy the wet paper RP 0 of high water content, and in the illustrated preferred embodiment, the preliminary squeezing force is determined so that the water content of the wet paper RP 0 on the mesh belt 105 after preliminary dewatering process may be in a range of 80 to 75%.
- the final dewatering roll unit 96 B is for obtaining a dry paper specified water content (recycled paper) RP by further squeezing and dewatering the wet paper RP 0 on the mesh belt 105 after preliminary dewatering by the preliminary dewatering roll unit 96 A, and specifically includes at least one set of a final squeezing roll pair 127 consisting of a final dewatering roll 125 rolling on the mesh belt 105 from the lower side, and a final press roll 126 rolling and pressing on the smooth surface belt 145 from the upper side in cooperation with the final dewatering roll 125 .
- the final squeezing roll pair 127 consisting of the final dewatering roll 125 and the final press roll 126 , the mesh belt 105 and the smooth surface belt 145 are rolled and squeezed from both upper and lower sides at a specified final pressure in a compressed state, and the water content in the wet paper RP 0 on the mesh belt 105 is finally removed, and a dry paper of specified water content, that is, recycled paper RP is obtained.
- the final pressure that is, the final squeezing force of the final dewatering roll 96 B for finally squeezing and dewatering the wet paper RP 0 on the mesh belt 105 is set to such a magnitude for obtaining a specified dewatering effect securely about the preliminarily dewatered wet paper RP 0 , and in the illustrated preferred embodiment, it is set so that the water content of the dry paper (recycled paper) RP on the mesh belt 105 after the final dewatering process may be in a range of 70 to 65%.
- rolls 120 , 121 , 125 , 126 in the dewatering roll unit 96 are not specifically shown, but as being driven and coupled to the single drive motor 106 by driving and coupling means of gear mechanism, all rolls 120 , 121 , 125 , 126 are rotated and driven in mutual interaction.
- these rolls 120 , 121 , 125 , 126 are rotated and controlled so as to roll and contact mutually at a slight rotating speed difference mutually on the outer circumferential surfaces of the upper and lower rolls 120 , 125 and the outer circumferential surfaces of 121 , 126 , on the contact surfaces (the lower side of the mesh belt 105 and the upper side of the smooth surface belt 145 ) of the mesh belt 105 and the smooth surface belt 145 rolled and squeezed in a compressed state between the outer circumferential surfaces.
- the rotating speed of the upper side preliminary and final press rolls 121 , 126 is set slightly larger than the rotating speed of the lower side preliminary and final dewatering rolls 120 , 125 , and therefore the running speed of the smooth surface belt 145 is set slightly larger than the running speed of the mesh belt 105 .
- the running speed of the smooth surface belt 145 is set slightly larger than the running speed of the mesh belt 105 .
- the angle defining roll unit (angle defining means) 96 C is for assisting the squeezing and dewatering action of the preliminary dewatering roll unit 96 A and the final dewatering roll unit 96 B to be effective, and it is provided at the upstream side of the preliminary dewatering roll unit 96 A, and defines the inclination angle between the mesh belt 105 and the smooth surface belt 145 inserted in the preliminary dewatering roll unit 96 A.
- the angle defining roll unit 96 C is specifically for defining the inclination angle between the mesh belt 105 and the smooth surface belt 145 inserted in the preliminary dewatering roll unit 96 A, and more specifically it includes a mesh belt guide roll 130 rolling on the mesh belt 105 from the lower side, and defining the insertion angle of the mesh belt 105 in the preliminary dewatering roll unit 96 A, and a smooth surface belt guide roll 131 rolling on the smooth surface belt 145 from the upper side, and defining the insertion angle of the smooth surface belt 145 in the preliminary dewatering roll unit 96 A.
- the insertion angle of the mesh belt 105 in the preliminary dewatering roll unit 96 A is defined, and by the smooth surface belt guide roll 131 , the insertion angle of the smooth surface belt 145 in the preliminary dewatering roll unit 96 A is defined, and therefore the inclination angle between the mesh belt 105 and the smooth surface belt 145 is indirectly determined in a specified range.
- the inclination angle of the mesh belt 105 and the smooth surface belt 145 is determined so as to prevent effectively the wet paper RP 0 from returning to slurry by re-absorption of a large volume of squeezed water into the wet paper RP 0 after the water contained in the wet paper RP 0 is once squeezed substantially to the upstream side of the preliminary dewatering roll unit 96 A by the preliminary dewatering action by the preliminary dewatering roll unit 96 A.
- the preliminary dewatering roll 120 and the preliminary press roll 121 of the preliminary dewatering roll 96 A when the mesh belt 105 and the smooth surface belt 145 on which the wet paper RP 0 is mounted at the upper side are squeezed and rolled from the upper and lower sides in a compressed state, the water content in the wet paper RP 0 is squeezed out to the upstream side of the both rolls 120 , 121 .
- the upper side smooth surface belt 145 is apart from the wet paper RP 0 on the lower side mesh belt 105 , and hence a part of the abundant squeezed water contained in the wet paper RP 0 may be absorbed again in the wet paper RP 0 , and the wet paper RP 0 may become slurry again.
- the inclination angle ⁇ between the mesh belt 105 and the smooth surface belt 145 is preferably set in a range of 1 to 20 degrees as a result of various tests, preferably 3 to 7 degrees, and it is set at 5 degrees in the illustrated preferred embodiment.
- the rolls 120 , 121 , 125 , 126 of the preliminary dewatering roll unit 96 A and the final dewatering roll unit 96 B in the dewatering roll unit 96 are put in rotation, and first by the preliminary squeezing roll pair 122 in the preliminary dewatering roll unit 96 A, the mesh belt 105 and the smooth surface belt 145 are rolled and squeezed from both upper and lower sides in a compressed state at a specified preliminary pressure, and the water contained in the wet paper RP 0 on the mesh belt 105 is preliminarily removed (in the illustrated preferred embodiment, the water content in the wet paper RP 0 is reduced from 90 to 85% to 80 to 75%)
- the mesh belt 105 and the smooth surface belt 145 are rolled and squeezed from both upper and lower sides in a compressed state at a specified final pressure, and the water contained in the wet paper RP 0 on the mesh belt 105 is finally removed, and the dry paper of specified water content, that is, the recycled paper RP is obtained (in the illustrated preferred embodiment, the wet paper RP 0 of water content of 80 to 75% is dewatered to the dry paper RP of water content of 70 to 65%) .
- the white water W squeezed and dewatered from the wet paper RP 0 is collected in the white water collection tank 45 in the water feed device 27 .
- the wet paper RP 0 squeezed and dewatered by the dewatering roll unit 96 is transferred and conveyed to the lower side of the upper side smooth surface belt 145 from the upper side of the lower side mesh belt 105 , at a downstream side location of the dewatering roll unit 96 , and is conveyed together with the smooth surface belt 145 , and is dried by the drying process unit 97 in the drying process.
- This transfer action is considered to be caused by a smooth surface structure of the smooth surface belt 145 . That is, the surface of the lower side mesh belt 105 is a fine rough surface having multiple fine continuous pores, whereas the surface of the upper side smooth surface belt 145 is a smooth surface without pores, and hence the wet paper RP 0 slightly containing water seems to be adsorbed by the surface tension against the surface of the smooth surface belt 145 .
- the drying process unit 97 is a location for producing generated paper RP by further drying the wet paper RP 0 once squeezed and dewatered in the dewatering roll unit 96 after the paper making process in the paper making process unit 95 , and mainly includes a drying conveyor 140 and a heating and drying unit 141 .
- the drying conveyor 140 is for smoothing and conveying the wet paper RP 0 squeezed and dewatered in the dewatering roll unit 96 , and mainly includes the smooth surface belt 145 , and the drive moor 106 for driving and moving this smooth surface belt 145 .
- the smooth surface belt 145 is to convey the wet paper RP 0 while heating and drying, and is specifically an endless belt connected and formed in an annular shape of a specified length of a plate material of smooth surface structure having a specified width.
- the plate material of smooth surface structure is finished in an appropriate smooth surface at one side of the surface of the wet paper RP 0 , and is made of a material capable of withstanding the heating action of the heating and drying unit 141 described below, and preferably an elastic heat resistant material is used such as fluorine resin or stainless steel, and a fluorine resin belt is used in the illustrated preferred embodiment.
- This smooth surface belt 145 is, as shown in FIG. 1 , rotatably supported and held by way of a drive roller 146 , driven rollers 147 , 148 , and the dewatering roll unit 96 , and is driven and coupled to the drive motor 106 by way of the drive roller 146 .
- the drive motor 106 for driving and moving the smooth surface belt 145 is commonly used as the running and driving source of the paper making conveyor 100 and the dewatering roll unit 96 as described above.
- the heating and drying unit 141 is a location for heating and drying the wet paper RP 0 on the smooth surface belt 145 , and includes a heater plate 150 , as a heating unit, disposed in the midst of the running route of the smooth surface belt 145 .
- This heater plate 150 is specifically configured to heat and dry the wet paper RP 0 on the smooth surface belt 145 indirectly by way of the smooth surface belt 145 .
- two smooth surface finishing rolls 149 , 149 are disposed, and are configured so as to roll and pressurize the wet paper RP 0 on the smooth surface belt 145 sequentially, and thereby the surface of one side and the surface of opposite side of the wet paper RP 0 contacting with the surface of the smooth surface belt 145 may be finished to a proper smooth surface.
- a peeling member 151 is provided, and the dry paper dried and conveyed on the smooth surface belt 145 , that is, the recycled paper RP is sequentially peeled from the holding side of the smooth surface belt 145 .
- a fixed size cutter unit 152 is provided at the terminal end position of the running route of the smooth surface belt 145 at the downstream side of this peeling member 151 , and the recycled paper RP peeled off from the smooth surface belt 145 is cut to a specified size (an A4 format in the illustrated preferred embodiment), and is discharged from the discharge port 8 of the apparatus case 6 .
- the apparatus control unit 5 is to control the operations of the drive units of the pulp making unit 2 , the pulp concentration adjusting unit 3 , and the paper making unit 4 automatically by interacting with each other, and is specifically composed of a microcomputer having a CPU, a ROM, a RAM, and an I/O port.
- This apparatus control unit 5 incorporates programs for executing the pulp making process of the pulp making unit 2 , the concentration adjusting process of the concentration adjusting unit 3 , and the paper making process of the paper making unit 4 , by interacting with each other, and also stores various items of information necessary for driving of the components 2 ( 20 , 21 ), 3 ( 3 A, 3 B), and 4 ( 95 , 10 , 96 ), for example, the driving time and rotating speed of the agitating device 26 in the macerating unit 20 , the water feed timing and water feed amount of the water feed device 27 , the driving time and circulation amount of the circulation pump 69 in the beating unit 21 , the driving time and rotating speed of the grinder 50 , the adjusting timing and beating gap G adjusting amount of the gap adjusting means 57 , the running speed of the conveyors 100 , 140 in the paper making unit 4 , the driving time of the heating and drying unit 141 , and the operation timing of the fixed size cutter unit 152 , preliminarily as data, or from the keyboard as appropriate selective input
- the weight sensors 48 , 87 , the position detection sensor, and the drive units 35 , 56 , 61 , 66 , 106 are connected electrically, and the apparatus control unit 5 controls these drive units 35 , 56 , 61 , 66 , 106 according to the measured values and the control data.
- the used paper recycling apparatus 1 having such configuration is started when the power source is turned on, and the components 2 ( 20 , 21 ), 3 ( 3 A, 3 B), and 4 ( 95 , 10 , 96 ) are controlled automatically by the apparatus control unit 5 in mutual interaction, and the used paper UP, UP, . . .
- the paper quality control condition of the mesh belt 105 is determined so that the pulp fibers in the pulp suspension PS supplied on the mesh belt 105 may be maintained in a non-directional and disorderly array state, and therefore the obtained recycled paper RP is free from “texture of paper”, and the paper quality is uniform without difference in longitudinal and lateral direction, and the strength is sufficient, and along with the purpose of prevention of leak or disclosure of confidential information, personal information, and various forms of information, the used paper UP used repeatedly by regeneration processes is not lowered in the strength, and the recycled paper RP withstanding use for a long period may be presented.
- the present invention realizes and presents a used paper recycling apparatus of furniture size that can be installed not only in a large office, but also in a small shop or a general household, being friendly to the environment, low in running cost, capable of preventing leak or disclosure of confidential information, personal information, and various types of information, and capable of maintaining a high confidentiality.
- the design may be changed or modified as follows.
- the specific numerical values of the paper quality control condition of the mesh belt 105 are obtained from a comprehensive combination condition of the running speed of the mesh belt 105 in the configuration of the illustrated preferred embodiment, the running inclination angle ⁇ of the mesh belt 105 , and the paper making mesh structure of the mesh belt, and they are not particularly limited as far as the pulp fibers in the pulp suspension PS supplied on the mesh belt 105 may be maintained in a range of a non-directional and disorderly array state.
Abstract
In a used paper recycling apparatus of furniture size that can be installed not only in a big office, but also in a small shop or general household room, this is a paper making device for making and producing recycled paper that is hardly lowered in strength if re-used repeatedly. The running condition of the mesh belt which runs while filtering and dewatering the pulp suspension is set in a range of maintaining the pulp fibers in the pulp suspension supplied on the mesh belt in a non-directional and disorderly array state, and therefore the manufactured recycled paper is free from so-called “texture of paper,” and the paper quality is uniform in anisotropy not different in longitudinal and lateral directions, and is sufficiently high in strength.
Description
- 1. Field of the Invention
- The present invention relates to a paper making device of used paper recycling apparatus and a used paper recycling apparatus, and more particularly to a paper making technology in a small used paper recycling apparatus of furniture size, installed at the site of origin of used paper, for recycling and processing into reusable paper at the site without discarding the generated used paper.
- 2. Description of the Related Art
- Used paper of various types occurs not only in government offices or private companies, but also in daily life or general household. Used paper is usually discarded, incinerated, or disposed as refuse.
- On the other hand, in the global concern about effective use of limited resources on earth, various technologies have been developed to regenerate and recycle the used paper being disposed and discarded so far.
- Such used paper recycling technologies are mostly installed and executed in the paper making industry, and the used paper recycling plant requires, like the ordinary paper making plant, a vast land, an immense investment, and a huge quantity of water and chemicals for the purpose of high speed and mass production and high quality of recycled paper.
- For recycling of used paper, a tremendous manual labor is needed for collecting used paper, and used paper collection involves various problems, such as mixing of foreign matter by multiple garbage collectors, defective classification due to lack of knowledge about used paper recycling, and entry of harmful objects, and if used paper is collected, in order to regenerate by 100 percent as recycled paper, final checking by specialists and cleaning works are needed. On the other hand, confidential documents are not easily recycled and are mostly incinerated, and the recycling rate is low.
- To solve these problems of used paper recycling, an effective method is the development of a technology capable of recycling at the site of origin of used paper, and from such point of view, a new system is proposed by the present applicant, for example, in Japanese Patent Application Laid-Open No. 2008-174877 as a used paper recycling apparatus.
- This used paper recycling apparatus is a realization of used paper recycling technology of large scale such as used paper recycling plant in a small size that can be installed in a small shop or a room in general household, and includes, in an apparatus case of furniture size, a pulp making unit for macerating and beating used paper to manufacture used paper pulp, a paper making unit for making recycled paper from the used paper pulp manufactured in this pulp making unit, and a control unit for driving and controlling the pulp making unit and the paper making unit in cooperation, in which the pulp making unit is composed of a macerating unit for agitating, crushing and macerating the used paper, and a beating unit for beating the used paper macerated in this macerating unit.
- Herein, the used paper is agitated, macerated and beaten by the macerating unit of the pulp making unit, and made into pulp, and is further beaten and pulverized by the beating unit, and desired used paper pulp is obtained, and then this used paper pulp is processed in the paper making unit, that is, filtered and dewatered, squeezed and dewatered, and heated and dried, and recycled paper obtained. In this process, in the state of pulp, the used paper is decomposed into fiber level, and the printed characters and diagrams are completely decomposed and lost, and cannot be restored, so that leak or disclosure of confidential information or personal information composed in printed characters and diagrams can be securely prevented.
- It is a primary object of the present invention to present a novel paper making device of a used paper recycling apparatus improved further from the paper making unit of a conventional used paper recycling apparatus.
- It is other object of the present invention to present a paper making device for manufacturing recycled paper less lowered in strength if used repeatedly in a used paper recycling apparatus of furniture size to be installed not only in a large office, but also in a small shop or a room in general household, by further improving the paper making technology of the paper making unit in the used paper recycling apparatus.
- To achieve these objects, the paper making device of the used paper recycling apparatus of the present invention is a paper making device for manufacturing recycled paper from the used paper pulp manufactured in the pulp making unit of a preceding process, in the used paper recycling apparatus of furniture size to be installed at the site of origin of the used paper, including a paper making process unit for making wet paper by making from the slurry-type pulp suspension mixed of used paper pulp and water sent from the pulp making unit, in which this paper making process unit has a paper making conveyor for manufacturing and conveying the pulp suspension, and this paper making conveyor is disposed and configured to drive a mesh belt of paper making mesh structure composed of numerous mesh cells while filtering and dewatering the pulp suspension, and the paper quality control condition of the mesh belt is set in a range of maintaining the pulp fibers in the pulp suspension supplied on the mesh belt in a non-directional and disorderly array state.
- Preferred embodiments include the following.
- (1) The paper quality control condition of the mesh belt at least includes the running speed of the mesh belt and the running inclination angle of the mesh belt.
- (2) The running speed of the mesh belt is set at 0.1 m/min 1.8 m/min.
- (3) The mesh belt is disposed and configured so as to run obliquely upward and straightly toward its running direction.
- (4) The upward inclination angle of the mesh belt is set at 3 degrees to 12 degrees.
- (5) The paper making process unit is provided at a starting end position of the paper making process of the paper making conveyor, and includes a pulp supply unit for supplying the pulp suspension sent from the pulp making device into the paper making conveyor, and by this pulp supply unit, the pulp suspension is spread uniformly and supplied on the upper side of the mesh belt of the paper making conveyor.
- (6) The paper making mesh structure of the mesh belt is composed so that the pulp suspension supplied on the mesh belt maybe filtered and dewatered to be wet paper of an appropriate weight in the process of the mesh belt running for a specified running distance.
- (7) The mesh size of the mesh belt is 25 mesh cells to 80 mesh cells.
- (8) The paper making process length of the mesh belt is set in a range of a straight running direction length of the mesh belt in the apparatus case of furniture size.
- (9) The paper making process length of the mesh belt is set in relation to the running speed of the mesh belt and the paper making mesh structure, so that the pulp suspension may be manufactured into an appropriate weight, and that the paper making conveyor having the mesh belt may be contained within the apparatus case of furniture size.
- (10) Including the paper making process unit for obtaining wet paper by manufacturing from slurry-like pulp suspension composed of water and used paper pulp sent from the pulp making device, a drying process unit for obtaining recycled paper by drying the wet paper manufactured and formed in this paper making process unit, and a dewatering roll unit for squeezing and dewatering the wet paper at a linkage part of the paper making process unit and the drying process unit, the pulp suspension supplied from the pulp making device is manufactured, dewatered, and dried.
- (11) The paper making conveyor includes the mesh belt as an endless belt for manufacturing and conveying the pulp suspension, and a drive motor for driving and moving the mesh belt.
- The used paper recycling apparatus of the present invention includes, in an apparatus case of furniture size, a pulp making unit for manufacturing used paper pulp by macerating and beating used paper, a paper making process unit for manufacturing recycled paper by making from the used paper pulp manufactured in this pulp making unit, and a control unit for driving and controlling the pulp making unit and the paper making process unit in cooperation, in which the paper making process unit is composed of the paper making device described above.
- The paper making device of the present invention is produced as a result of various tests and studies by the present inventor on the basis of the used paper recycling technology conventionally operated in a large-scale factor such as used paper recycling plant, realized as the used paper recycling technology of furniture size of the present invention.
- That is, the present inventor previously realized the used paper recycling technology in a large-scale factory facility in the used paper recycling technology in an extremely compact process working space of furniture size, and further continued studies and experiments to improve the technology, and has found out that the used paper recycled paper as the final product has its special property, that is, the used paper processed at a specific location of installation of the used paper recycling apparatus tends to be processed and used repeatedly, along with the purpose of prevention of leak or disclosure of confidential information, personal information, and various forms of information.
- On the other hand, the present inventor also noticed that the recycled paper recycled in the used paper recycling apparatus of furniture size of the present invention also has the paper quality tending to withstand relatively this repeated regeneration, and repeated various studies and experiments in order to find out the cause, and finally discovered that the recycled paper does not show evidently the typical aspect of ordinary paper known as “texture of paper”.
- As a result of trials and errors by the present inventor, the present invention has been completed.
- Hence, according to the paper making device of the present invention, the paper making process for manufacturing wet paper from the slurry-like pulp suspension mixed with water and used paper pulp sent from the pulp making device of the preceding process includes a paper making conveyor for manufacturing and conveying the pulp suspension, and this paper making conveyor is disposed and configured to run the mesh belt of paper making mesh structure composed of numerous mesh cells while filtering and dewatering the pulp suspension, and the paper quality condition of the mesh belt is set in a range of holding the pulp fibers in the pulp suspension supplied on the mesh belt in a non-directional and disorderly array state, and therefore the produced recycled paper is free from so-called “texture of paper”, and the paper quality is uniform without difference in longitudinal and lateral direction, and is sufficiently usable in strength.
- Therefore, along with the purpose of prevention of leak or disclosure of confidential information, personal information, and various forms of information, in the used paper recycled and processed repeatedly, the strength is not lowered, and the recycled paper withstanding use for a long period can be presented.
- Accordingly, the invention realizes and presents a used paper recycling apparatus of furniture size that can be installed not only in a large office, but also in a small shop or a general household, being friendly to the environment, low in running cost, capable of preventing leak or disclosure of confidential information, personal information, and various types of information, and capable of maintaining a high confidentiality.
- These and other objects and features of the present invention will be appreciated by reading the detailed description made in conjunction with the accompanying drawings, and novel facts pointed out in the claims thereof.
-
FIG. 1 is a front sectional view of an overall outline configuration of a used paper recycling apparatus in a preferred embodiment of the present invention. -
FIG. 2 is a side sectional view of an overall outline configuration of the same used paper recycling apparatus. -
FIG. 3 is a circuit diagram of configuration of a used paper circulation route of a beating unit of the used paper recycling apparatus. -
FIG. 4 is a block diagram of configuration of a pulp concentration adjustment unit of the used paper recycling apparatus. -
FIG. 5 is a perspective view of outline configuration of a paper making unit of the used paper recycling apparatus. -
FIG. 6 is a perspective magnified view of configuration of a pulp suspension supply location of a paper making process unit in the paper making device. -
FIG. 7 is a perspective view of outline configuration of the used paper recycling apparatus. -
FIG. 8 is a front view explaining the paper quality of the recycled paper recycled in the used paper recycling apparatus. -
FIG. 9 is a front view explaining the paper quality of ordinary paper generally available on market. - A preferred embodiment of the present invention is specifically described below while referring to the accompanying drawings. Throughout the drawings, same reference numerals refer to same components or elements.
- The used paper recycling apparatus of the present invention is shown in
FIG. 1 toFIG. 7 , and this usedpaper recycling apparatus 1 is specifically installed at the site of origin of used paper, and it is an apparatus for recycling into a re-usable paper at the site without discarding the generated used paper UP, and the used paper UP includes confidential documents of government offices or private companies, personal letters and others in the general household, and other used and unnecessary documents. - The used
paper recycling apparatus 1 is a furniture size as shown inFIG. 7 , that is, small in size and shape similar to furniture, such as document rack, locker, office desk, copier or personal computer used in an office, and mainly includes, as shown inFIG. 1 , a pulp making unit (pulp making device) 2, a pulpconcentration adjustment unit 3, a paper making unit (paper making device) 4, and an apparatus control unit (control unit) 5. - These apparatus units 2 to 5 are built in a compact design to be installed in an
apparatus case 6. Theapparatus case 6 is a furniture size as mentioned above, and specific dimensions and shapes may be designed appropriately depending on the purpose or application. Theapparatus case 6 in the shown preferred embodiment is a rectangular box having dimensions and shapes similar to a copier installed and used in a general office, and the top plate of theapparatus case 6 has aninlet 7 which is opened and closed for supplying used paper UP, and anoutlet 8 is provided at the side for discharging recycled paper RP, RP, . . . . At the lower edge portion of thisoutlet 8, a recycledpaper receiving tray 9 is detachably provided for receiving recycled paper RP, RP, . . . discharged from theoutlet 8. - The pulp making unit 2 is a process for manufacturing used paper pulp by macerating and beating the used paper UP, and is composed of a
macerating unit 20 for agitating, crushing and macerating the used paper UP, and a beatingunit 21 for beating the used paper UP macerated in themacerating unit 20. - The macerating
unit 20 is a process for agitating, crushing and macerating the used paper UP, and is mainly composed of amacerating tank 25, anagitating device 26, and awater feed device 27. - The
macerating tank 25 has theinlet 7 formed in its ceiling wall as shown inFIG. 2 for charging and supplying the used paper UP, and adischarge port 28 is provided in its bottom wall for discharging the macerated used paper pulp UPP to the downstream side. The inner volume of themacerating tank 25 is determined depending on the number of sheets of used paper UP to be processed in batch. In the illustrated preferred embodiment, themacerating tank 25 has a capacity of agitating and treating (in batch) a total of about 500 sheets (about 2000 g) of used paper UP of A4 format PPC (plain paper copier) by adding about 98 liters of water. In this case, the concentration of the used paper pulp UPP to be macerated is about 2%. The concentration is adjusted by supplying water from thewater feed device 27, and thiswater feed device 27 is a part of thepulp concentration unit 3 described below. - The
inlet 7 has a structure to be opened and closed to the outside of acase cover 6 a of theapparatus case 6, thedischarge port 28 is opened and closed by an opening and closing valve 29, and communicates with a used paperpulp circulation route 49 described below. At the location of thedischarge port 28, adebris filter 30 is provided for removing obstacles for the next beating process, such as clips, staples, pins and others used for binding the used paper UP, UP, . . . . - The opening and closing valve 29 opens and closes specifically by the crank motion of a crank mechanism 36 driven by a
drive motor 35. Thedrive motor 35 is specifically an electric motor, and thisdrive motor 35 is electrically connected to theapparatus control unit 5. - The agitating
device 26 is provided inside of the maceratingtank 25, and includes anagitation impeller 40 and adrive motor 41. - The
agitation impeller 40 has itsrotation shaft 40 a supported rotatably in an upright position in the central position of the bottom of themaceration tank 25, and is rotatable in the horizontal direction, and the lower end of therotation shaft 40 a is driven and coupled to arotation shaft 41 a of thedrive motor 41 by way of transmission means 42 composed of atransmission pulley 42 a, a transmission belt 42 b, and atransmission pulley 42 c. - The
water feed device 27 is to supply water into the maceratingtank 25, and forms a beatingconcentration adjustment unit 3A of the pulpconcentration adjustment unit 3 as described below. - The
water feed device 27 in the illustrated preferred embodiment includes, as shown inFIG. 1 , a whitewater collection tank 45, awater feed pump 46 for beating concentration adjustment, and awater feed tank 47 for paper making concentration adjustment. The whitewater collection tank 45 is, as described below, designed to collect white water W (pulp water of very low concentration filtered through a paper making mesh in the paper making process) filtered and dewatered in thepaper making unit 4, and the white water W collected in the whitewater collection tank 45 is first supplied into the maceratingtank 25 from thewater feed pump 46, and then into aconcentration adjustment tank 85 described below from thewater feed pump 47. - In this relation, in the bottom of the macerating
tank 25, aweight sensor 48 is provided, and the used paper UP, UP, . . . and the water to be processed in batch in the maceratingtank 25 are weighed and controlled, and theweight sensor 48 is electrically connected to theapparatus control unit 5. - The
weight sensor 48 of the illustrated preferred embodiment is a load cell, and is designed to sense and measure the total weight of weight of used paper UP, UP, . . . and water charged and supplied in the maceratingtank 25. - In a specific control constitution of the macerating
unit 20, in the first place, when theinlet 7 is opened by the operator, and the used paper UP, UP, . . . are charged into the maceratingtank 25, the weight is sensed and measured by theweight sensor 48, and when reaching a specified weight (number of sheets), the operator is informed of it by sound and/or display. According to the display, when the operator closes theinlet 7, thewater feed device 27 is driven, and the water W in the whitewater collection tank 45 is supplied by thewater feed pump 46 into the maceratingtank 25 by the portion corresponding to the charged weight of used paper UP, UP, . . . (the number of sheets) - When the operator closes the
outlet 7 after charging an arbitrary amount of used paper UP, UP, . . . into the maceratingtank 25 from the inlet 7 (an amount smaller than the specified weight (number of sheets)), the weight is sensed and measured by theweight sensor 48, and thewater feed device 27 is driven, and the water W corresponding to the measured weight is supplied by thewater feed pump 46 into the maceratingtank 25 from the whitewater collection tank 45. - In the illustrated preferred embodiment, as mentioned above, when PPC used paper UP of A4 format is supplied into the macerating
tank 25 by about s maximum capacity, about 500 sheets (about 2000 g), at this moment, it is noticed to the operator by sound and/or display, and by the closing operation of theinlet 7, about 98 liters of water is supplied from thewater feed device 27, or when an arbitrary amount of used paper UP, UP, . . . is supplied (an amount smaller than the specified weight (number of sheets)), the water corresponding to the supplied amount of used paper is added to thewater feed device 27, and the concentration of the used paper pulp UPP to be macerated is controlled and adjusted to about 2%. - Thus, in the agitating
device 26, the used paper UP, UP, . . . charged into the maceratingtank 25 from the charging opening of theapparatus case 6, that is, theinlet 7 are agitated and mixed for a specified time (10 to 20 minutes in the illustrated preferred embodiment) in the water supplied from thewater feed device 27 by normal and reverse rotation of theagitation impeller 40 by thedrive motor 41, and thereby the used paper UP, UP, . . . are macerated and beaten into used paper pulp UPP. - The
discharge port 28 of the maceratingtank 25 is closed by the opening and closing valve 29 during operation of the maceratingunit 20, and flow of used paper UP or used paper pulp UPP from the maceratingtank 25 into the used paperpulp circulation route 49 is blocked, while theinlet 7 is opened by the opening and closing valve 29 during operation of thebeating unit 21 described later, and the flowing and circulating loop of the used paper pulp UPP from the maceratingtank 25 into the used paperpulp circulation route 49 is allowed. - The beating
unit 21 is a process for beating the used paper UP macerated in the maceratingunit 20, and is specifically designed to pressurize and beat the used paper UP macerated in the maceratingunit 20, and to grind and pulverize (into micro-fibers) the inks forming characters and patterns on the used paper UP (printing inks forming characters and patterns on the used paper UP by various printing technologies, or inks forming characters and patterns on the used paper UP by pencil, ball-point pen, fountain pen, and other writing tools) - This
beating unit 21 mainly includes agrinder 50. Thisgrinder 50 includes, as shown inFIG. 3 , a pair of beatingdisks disks - The beating gap G of the beating action surfaces 51 a, 52 a of the
grinder 50 is determined so as to be narrowed gradually, as described below, from thegrinder 50 in an initial period of beating process to thegrinder 50 in a later period. - In the
beating unit 21 of the present preferred embodiment, as shown inFIG. 3 , the used paperpulp circulation route 49 having thegrinder 50 is formed, and the used paper pulp UP is circulated and beaten for a specified time by way of thegrinder 50 in a circulation system. - By execution of the beating process in the used paper
pulp circulation route 49, in spite of the small and narrow process space in theapparatus case 6 of furniture size, a used paper pulp beating process route of basically infinite length not limited in length is formed, and the beating process space equally compared with the beating process of a large-scale apparatus is realized, and an optimum beating effect is obtained depending on the purpose. - Moreover, one
grinder 50 carries out the whole beating process throughout the entire process of the beating process, and this onegrinder 50 has the functions of a plurality of grinders from the grinder in an initial period of beating process to the grinder in a later period. More specifically, the beating gap G of the beating action surfaces 51 a, 52 a of thegrinder 50 is controlled and adjusted so as to be narrower gradually from the initial period to the final period of the beating process. - The
grinder 50 of the illustrated preferred embodiment is disposed, as shown inFIG. 2 , adjacently to the maceratingtank 25 of the maceratingunit 20, on anapparatus machine body 54 composing theapparatus case 6, and as shown inFIG. 3 , it further includes abeating tank 55 communicating with the maceratingtank 25 of the maceratingunit 20, the pair of beatingdisks beating tank 55, arotation drive source 56 for relatively rotating the pair of beatingdisks disks - The
beating tank 55 is formed in a closed cylindrical shape for accommodating the pair of beatingdisks supply port 55 a for supplying the used paper pulp UPP from the upstream side, and adischarge port 55 b for discharging the beaten used paper pulp UPP to the downstream side. - More specifically, the
supply port 55 a is opened in the center of the bottom of thebeating tank 55 toward the vertical direction, and thedischarge port 55 b is opened at the cylindrical side of thebeating tank 55 toward the horizontal direction. Thesupply port 55 a and thedischarge port 55 b are connected to communicate with the maceratingtank 25 of the maceratingunit 20, respectively by way ofcirculation pipings FIG. 3 , and thedischarge port 55 b is further connected to communicate with a used paperpulp collection tank 60 by way of adischarge piping 59. -
Reference numeral 61 shows a direction changeover valve, by the changeover operation of thisdirection changeover valve 61, the used paper pulp UPP discharged from thedischarge port 55 b is selectively returned to the maceratingtank 25, or collected in the used paperpulp collection tank 60. Thedirection changeover valve 61 is specifically an electromagnetic opening and closing valve, and is electrically connected to theapparatus control unit 5. - Of the pair of beating
disks side beating disk 51 is the rotating side, and the lowerside beating disk 52 is the fixed side, and the rotatingside beating disk 51 of the upper side is disposed oppositely to the fixedside beating disk 52 of the lower side, concentrically and rotatably across a tiny beating gap G. The rotatingside beating disk 51 is driven and coupled to adrive motor 56 by way of a rotationmain shaft 64 pivoted rotatably to the fixed side of theapparatus machine body 54 and movably in the axial direction. - Although not shown specifically, the rotation
main shaft 64 is rotatably pivoted on an elevating member of the gap adjusting means 57, and the rotatingside beating disk 51 is concentrically and integrally attached at its leading end, and its base end part is driven and coupled integrally in the rotating direction and relatively movably in the axial direction on the rotation shaft of thedrive motor 56. - The
drive motor 56 is a rotation drive source, and relatively rotates the pair of beatingdisks drive motor 56 as its drive source is electrically connected to theapparatus control unit 5. - The
opposite sides disks FIG. 3 , formed in a taper shape continuously increased in the diameter size in the mutually opposite directions, and are formed as annular flat surfaces parallel to each other at the outermost peripheral edges, and these annular flat surfaces form the beating gap G. - In other words, in the pair of beating
disks action surface 42 a of the fixedside beating disk 52, aninlet 70 is formed to communicate coaxially with thesupply port 55 a of the beating tank, and the two annular flat surfaces formed on the outer peripheral edges of the beating action surfaces 51 a, 52 a of the pair of beatingdisks outlet 71 communicating with thedischarge port 55 b of thebeating tank 55 and having the beating gap G. - On the outer circumference of the rotating
side beating disk 51, a plurality ofblades blades outlet 71 in pumping action toward thedischarge port 55 b of thebeating tank 55 by centrifugal force by rotation of the rotatingside beating disk 51. - By the
drive motor 56 as the drive source, when the rotatingside beating disk 51 is rotated and driven to the fixedside beating disk 52, the used paper pulp UPP supplied into a beating gap B by way of thesupply port 55 a of thebeating tank 55 and theinlet 70 from the maceratingtank 25 of the maceratingunit 20 flows into the beating space B from theinlet 70, and passes through this beating space B, and is pressurized and beaten by the relatively rotating beating action surfaces 51 a, 52 a, and the inks forming the characters and patterns on the used paper UP are ground and pulverized, and then it is discharged by way of thedischarge port 55 b of thebeating tank 55 from theoutlet 71. - At the time of discharge from this
outlet 71, the used paper pulp UPP is further pressurized and beaten at the location of theoutlet 71 having the beating gap G, and is pulverized to a specified micron size (to become micro-fiber) defined by this beating gap G. - In this regard, in the present preferred embodiment, as mentioned above, in the circulation system beating process disposing only one
grinder 50 in the used paper pulp circulation route 49 (seeFIG. 3 ), and this onegrinder 50 has the functions of a plurality of grinders from the grinder in an initial period of beating process to the grinder in a terminal period, and more specifically, the beating gap G of thegrinder 50 is controlled and adjusted by the gap adjusting means 57 so as to be narrower gradually from the initial period to the final period of the beating process. - The gap adjusting means 57 is not particularly illustrated, but is designed to move the pair of beating
disks disks side beating disk 51 in the rotation axial direction, that is, in the axial direction of a rotationmain shaft 64, and adrive source 66 for driving this moving means. The drive source is specifically an electric motor, and thisdrive motor 66 is electrically connected to theapparatus control unit 5. - By the rotation of this
electric motor 66, the rotatingmain shaft 64 is moved up and down by way of the moving means, and therefore the rotatingside beating disk 51 formed integrally with the rotationmain shaft 64 is moved in the vertical direction to the fixedside beating disk 52, that is, in the rotation axial direction, and the beating gap G between the twobeating disks - For this purpose, a position detection sensor (not shown) is provided for detecting the ascending and descending position of the rotating
side beating disk 51, and depending on the result of detection by this position detection sensor, thedrive motor 66 is driven and controlled. The position detection sensor is electrically connected to theapparatus control unit 5. - The beating gap G of the beating
disks pulp circulation route 49 shown inFIG. 3 , in mutual interaction with acirculation pump 69 which is circulating means. - That is, in
FIG. 3 , the used paper pulp UPP macerated by the maceratingunit 20 is circulated through the used paperpulp circulation route 49 by thecirculation pump 69, and is beaten by thegrinder 50, and at this time the beating gap G of the beating action surfaces 51 a, 52 a of thegrinder 50 is controlled by the gap adjusting means 57 so as to be narrower gradually from the initial period to the terminal period of the beating process. - In the used paper
pulp circulation route 49, the maceratingtank 25 of the maceratingunit 20 is included, and in this beating process, the agitatingdevice 26 of the maceratingunit 20 is driven and controlled, and the maceratingunit 20 is driven simultaneously with thebeating unit 21. That is, in the circulation system beating process, the used paper pulp UPP flows out into the used paperpulp circulation route 49 from the maceratingtank 25, while the used paper pulp UPP beaten by thegrinder 50 flows into the maceratingtank 25, and therefore in the maceratingtank 25, the used paper pulp UPP of different degrees of beating is mixed, and by the agitating action by the agitatingdevice 26, the degree of beating of the used paper pulp UPP in the maceratingtank 25 is made uniform, and the beating process is promoted. - The used paper
pulp collection tank 60 is a location for collecting the used paper pulp UPP beaten and pulverized to a desired size by the beatingunit 21, and the used paper pulp UPP collected herein is mixed and adjusted to a paper making concentration corresponding to the finished paper quality of the recycled paper RP to be recycled as a pulp suspension PS, and is sent to thepaper making unit 4 in a next paper making process. - The pulp
concentration adjusting unit 3 is weight type device for adjusting the concentration of the used paper pulp UPP supplied in thepaper making unit 4, by measuring the weight and adjusting the mixing rate of used paper UP and water W supplied into the apparatus, and more specifically as shown inFIG. 4 , it includes a beatingconcentration adjusting unit 3A, a paper makingconcentration adjusting unit 3B, and a pulpconcentration control unit 3C. - The beating
concentration adjusting unit 3A is to adjust the beating concentration of the used paper pulp UPP in the pulp making unit 2, corresponding to the beating efficiency by the beatingunit 21, and as mentioned above, it is mainly composed of thewater feed pump 46 and the beatingconcentration control unit 75 for adjusting the beating concentration of thewater feed device 27. - The supply amount of white water W by the
water feed pump 46 of the beatingconcentration adjusting unit 3A is preferred to be set so that the beating concentration of the used paper pulp UPP macerated and beaten by the agitatingdevice 26 may be, for example, the maximum concentration allowable for the beating capacity of thegrinder 50 of thebeating unit 21 for executing the next step of the beating process, and in the illustrated preferred embodiment, it is set to be a beating concentration of about 2% as mentioned above. - The beating
concentration control unit 75 drives and controls thewater feed pump 46 so as to supply a necessary amount of water into the maceratingtank 25, as mentioned above, depending on the result of measurement from theweight sensor 48. This beatingconcentration control unit 75 composes a part of theapparatus control unit 5 as described below. - The paper making
concentration adjusting unit 3B is to adjust the paper making concentration of the used paper pulp UPP in thepaper making unit 4, to an appropriate concentration corresponding to the finished paper quality of the recycled paper RP to be recycled, and is more specifically designed to adjust the concentration of the used paper pulp UPP manufactured in the pulp making unit 2 by a division system, and it mainly includes adivision extraction unit 80, asuspension preparing unit 81, and a paper makingconcentration control unit 82. - The
division extraction unit 80 is to divide and extract by a specified small portion from the total volume of the used paper pulp UPP manufactured in the pulp making unit 2 in the preceding process, and includes a used paperpulp supply pump 86 for division and extraction for extracting the used paper pulp UPP of the used paperpulp collection tank 60 and sending to aconcentration adjusting tank 85. - The
suspension preparing unit 81 is to prepare a pulp suspension PS of a specified concentration by adding a prescribed amount of water W for concentration adjustment to the specified small portion of the used paper pulp UPP divided and extracted by thedivision extraction unit 80, and mainly includes awater feed pump 47 of thewater feed device 27. - Although not shown specifically, in the bottom of the
concentration adjusting tank 85, same as in the case of the maceratingtank 25 mentioned above, aweight sensor 87 composed of a load cell is provided, and is designed to measure and control the amount of the used paper pulp UPP and water W for concentration adjustment supplied into theconcentration adjusting tank 85, and theweight sensor 87 is electrically connected to theapparatus control unit 5. - The paper making
concentration control unit 82 controls by interacting thedivision extraction unit 80 and thesuspension preparing unit 81, and forms a part of theapparatus control unit 5, and controls thepumps division extraction unit 80 and thesuspension preparing unit 81 by interaction so as to execute the following step of the paper making concentration adjusting process. - First of all, from the whole volume of the used paper pulp UPP collected into the used paper
pulp collection tank 60 from the beating unit 21 (in the illustrated preferred embodiment, about 2000 g of used paper UP+100 L of water W), the used paper pulp UPP of a specified portion (1 L in the illustrated preferred embodiment) is divided by the used paperpulp supply pump 86, and is transferred and contained in theconcentration adjusting tank 85. As a result, its weight is sensed and measured by theweight sensor 87, and the result is sent to theapparatus control unit 5. - In succession, corresponding to the specified portion of the divided used paper pulp UPP, diluting water W is supplied by the
water feed pump 47 into theconcentration adjusting tank 85 from the whitewater collection tank 45 by a specified volume (9 L in the illustrated preferred embodiment, actually as weighed and measured by the weight sensor 87) - As a result, in the
concentration adjusting tank 85, the used paper pulp UPP of beating concentration (2% in the illustrated preferred embodiment) and the water W are mixed and diluted, and a pulp suspension PS of a specified concentration (about 0.2% concentration or target concentration in the illustrated preferred embodiment) is mixed and prepared. - The target concentration of the pulp suspension PS to be prepared is determined in consideration of the paper making capacity in the
paper making unit 4 described below on the basis of the results of the preliminary experiment, and it is set to about 0.2% in the illustrated preferred embodiment as mentioned above. - In this way, the pulp suspension PS prepared to the paper making concentration (0.2%) of the target concentration in the
concentration adjusting tank 85 is transferred and supplied into apulp supply tank 89 from theconcentration adjusting tank 85 by a firstsuspension supply pump 88, and is stored in preparation for the next process ofpaper making unit 4. Thereafter, this paper making concentration adjustment process is repeated similarly for the entire volume of the used paper pulp UPP in the used paperpulp collection tank 60. Thepulp supply tank 89 is provided with a secondsuspension supply pump 90 for sending the pulp suspension PS into a papermaking process unit 95 of thepaper making unit 4. - An agitating
device 91 is provided in thepulp supply tank 89, and by the agitating action of this agitatingdevice 91, the paper making concentration of the entire stored and held pulp suspension PS is uniformly kept at a specific value. - As described herein, the concentration adjustment by the paper making
concentration adjusting unit 3 is not done in batch of whole volume, but is done in divided portions, that is, in small portions, and the water consumption is saved substantially, and theconcentration adjusting tank 85 can be reduced in size and shape substantially, and hence the usedpaper recycling apparatus 1 is entirely built in a compact design. - The pulp
concentration control unit 3C is to drive and control the beatingconcentration adjusting unit 3A and the paper makingconcentration adjusting unit 3B in interlock, and specifically by receiving the pulp concentration control information (the charging amount of the used paper UP, the water supply amount into the maceratingtank 25, the beating concentration of the used paper pulp UPP, etc.) from the beatingconcentration control unit 75 of the beatingconcentration adjusting unit 3A, the paper making concentration information (the target paper making concentration of the used paper pulp UPP, the division extraction amount of the used paper pulp UPP from the used paperpulp collection tank 60, the water supply amount into theconcentration adjusting tank 85, etc.) for adjusting the concentration of the used paper pulp UPP manufactured in the pulp making unit 2 to the target concentration (the paper making concentration) depending on this control information sent to the paper makingconcentration control unit 82 of the paper makingconcentration adjusting unit 3B, and thereby the paper making concentration adjusting process is executed. - The paper making unit (the paper making device) 4 is a process for manufacturing recycled paper RP from the used paper pulp UPP manufactured in the pulp making unit 2, and is mainly composed of a paper
making process unit 95, adewatering roll unit 96, and a drying process unit 97. - The paper
making process unit 95 is a location for making wet paper RP0 by making from slurry-like pulp suspension PS composed of the water W and the used paper pulp UPP sent from thepulp supply tank 89 of the pulp making unit 2, and mainly includes apaper making conveyor 100 and apulp supply unit 101. - The
paper making conveyor 100 is for conveying the pulp suspension while making paper therefrom, and amesh belt 105 of paper making mesh structure composed of numerous mesh cells is disposed for filtering and dewatering the pulp suspension PS while running. - Specifically, the
paper making conveyor 100 includes themesh belt 105 of an endless belt form for conveying the pulp suspension PS while making paper therefrom, and adrive motor 106 for driving and moving thismesh belt 105. - The
mesh belt 105 is specifically an endless belt formed of plate members of specified width having a paper making mesh structure composed of numerous mesh cells for filtering and dewatering the pulp suspension PS, connected in an annular form of a specified length. - The plate member of the paper making mesh structure for composing the
mesh belt 105 is a material capable of filtering and dewatering the pulp suspension PS appropriately by way of the numerous mesh cells of the paper making mesh structure, and preferred materials include polypropylene (PP), polyethylene terephthalate (PET), polyamide (PA) (generally known as Nylon, a registered trademark), stainless steel (SUS), and other corrosion resistant materials, and in the illustrated preferred embodiment, a PET-mademesh belt 105 excellent in heat resistance is used. - The paper making mesh structure of the mesh belt is composed so as to obtain wet paper RP0 of an appropriate weight in the process of the pulp suspension PS supplied on the
mesh belt 105 being filtered and dewatered while themesh belt 105 is running for a specified running distance, and preferably a smooth material of fine mesh cells and fine weaving cells is used. A specific paper making mesh structure of the mesh belt is selected depending on the desired characteristics of the obtained paper, and in particular the following points are taken into consideration. - The mesh size of the
mesh belt 105 is preferably 25 mesh cells to 80 mesh cells, and in the illustrated preferred embodiment, themesh belt 105 of 50 mesh cells is used. - The mesh structure of the
mesh belt 105 is determined not only by the mesh size (mesh cells) but also by the mesh fiber diameter. At the same number of mesh cells, when the fiber diameter is larger, the mesh size is smaller, a when the diameter is smaller, the mesh size is larger, and this relation is expressed by the mesh voids or air permeability (cm3/cm2/sec), that is, the rate of permeating air. - The weaving method of mesh cells of the
mesh belt 105 includes single weaving, double weaving, varying method of warp diameter and weft diameter, and others, and in multiple weaving method, it is necessary to increase the diameter of the roll for rotating and supporting themesh belt 105 as described below, and the apparatus is increased in size, therefore, in the illustrated preferred embodiment, themesh belt 105 of single weaving is used. - In consideration of these conditions, the
mesh belt 105 is formed in a mesh structure small in mesh fiber diameter, large in the number of mesh cells, and not lowered in the permeability, in order to prevent the used paper pulp UPP from slipping out of the mesh cells of themesh belt 105 in the paper making process, and in the illustrated preferred embodiment, themesh belt 105 is a 50-mesh PET-mademesh belt 105 of plain weaving. Thismesh belt 105 has been experimentally proved to produce an excellent paper quality without causing any particular problem. - The width dimension of the
mesh belt 105 set at a specified width dimension slightly larger than the width dimension of the reproduced paper RP to be manufactured from the pulp suspension PS. - The
mesh belt 105 is, as shown inFIG. 1 andFIG. 5 , suspended and supported rotatably by way of adrive roller 107, adrive roller 108, asupport roller 109, and adewatering roll unit 96, and is driven and coupled to thedrive motor 106 by way of thedrive roller 107. - The paper making process length in the
mesh belt 105 is determined in a range of straight running direction length of themesh belt 105 in theapparatus case 6 of furniture size, specifically, in a range of upper side running direction length of the mesh belt 105 (in the illustrated preferred embodiment, the lateral direction length from thepulp supply unit 101 to thedewatering roll unit 96 inFIG. 1 ). - Specifically, the paper making process length of the
mesh belt 105 is prescribed to be sufficient for manufacturing a proper weight of paper from the pulp suspension PS, in relation to the filtering and dewatering rate of the mesh structure, and the running speed of themesh belt 105 described below, and also for accommodating thepaper making conveyor 100 having themesh belt 105 to be contained in theapparatus case 6 of furniture size. - Herein, the paper quality control condition of the
mesh belt 105 including the paper making mesh structure of themesh belt 105, that is, the condition for determining the paper quality of the recycled paper RP finally recycled in thepaper making unit 4 is determined in a range of holding the pulp fibers in the pulp suspension PS to be supplied on themesh belt 105 in a direction-free and disorderly array state. - Such characteristic configuration is obtained as a result of further various tests and studies by the present inventor after realization of the used paper recycling technology of large-scale plant such as conventional used paper recycling factory, as a used paper recycling technology of furniture size of the present invention.
- The present inventor also noticed that the recycled paper RP recycled in the used paper recycling apparatus of furniture size of the present invention also has the paper quality tending to withstand relatively this repeated regeneration, and repeated various studies and experiments in order to find out the cause, and finally discovered that the recycled paper does not show evidently the typical aspect of ordinary paper known as “texture of paper”.
- That is, the ordinary paper sold on market has the “texture of paper” appearing in the running direction (longitudinal direction) of paper making, and it shows the direction of paper fibers, and when the longer side of a rectangular cut piece of paper is parallel to the “texture of paper”, it is called “paper of longitudinal texture,” and the paper at right angle to the “texture of paper” is called “paper of lateral texture”, and the paper quality is anisotropic.
- For example, in the case of “paper of longitudinal texture,” as shown in
FIG. 9 , the paper P can be easily torn straightly in the longitudinal direction conforming to the fiber direction (=running direction of paper in paper making process, see arrow) (see fissure (a) inFIG. 9A ), and is hardly torn straightly in direction at right angle to the fiber direction (see fissure (b) inFIG. 9B ). - In this manner, by the manufacturing technology of manufacturing paper having an anisotropic paper quality, when attempted to regenerate from used paper UP, it has been experimentally known that the paper strength is gradually weakened in the process of repeating regenerating processes, first regeneration, second regeneration, third regeneration, and so forth, and finally the paper is not usable. The cause of such strength decline is considered as follows: as the used paper UP is macerated and beaten repeatedly and pulp is formed, the length of paper fibers (pulp filaments) becomes shorter gradually, and the recycled paper recycled from such short pulp filaments, and if the paper quality is anisotropic, the bonding force becomes very weak due to entangling of fibers. Incidentally, the recycled paper recycled in a large-scale factory such as used paper recycling plant can be recycled about two or three times.
- By contrast, in the case of recycled paper RP recycled in the used paper recycling apparatus of furniture size of the present invention (see, for example,
patent document 1, Japanese Patent Application Laid-Open No. 2008-174877), as compared with the recycled paper recycled in the large-scale plant facility, it has been experimentally known that the paper quality tens to withstand relatively repeated regenerations, and as a result of repeated various studies and experiments in order to find out the cause, it is finally discovered that the recycled paper does not show evidently the typical aspect of ordinary paper known as “texture of paper”. - On the basis of such findings, by setting the paper quality control condition of the
mesh belt 105 in a range of holding the pulp fibers in the pulp suspension PS to be supplied on themesh belt 105 in a direction-free and disorderly array state, it is known that the recycled paper RP recycled from the pulp suspension PS does not show any typical aspect of ordinary paper known as “texture of paper”, and shown inFIG. 8 , when the recycled paper RP is torn parallel to the running direction (see arrow) (see fissure (a) inFIG. 8 ), or at right angle (see fissure (b) inFIG. 8 ), the paper is torn similarly and the paper quality is uniform in anisotropy not different in longitudinal or lateral direction, and the strength is experimentally proved to be sufficiently durable in practical use. - What is most important in the paper quality control condition of the
mesh belt 105 lies in the running speed of themesh belt 105 and the running inclination angle α of themesh belt 105. In other words, the paper quality control condition of themesh belt 105 includes at least the running speed of themesh belt 105 and the running inclination angle α of themesh belt 105, and also includes the condition of the mesh wire structure of themesh belt 105 mentioned above. - The running speed of the
mesh belt 105 is set in consideration of the conditions mentioned above, and is preferably set at 0.1 m/min to 1.8 m/min, or more preferably at 0.3 m/min to 1.0 m/min, and at 0.5 m/min in the illustrated preferred embodiment. By contrast, in large-scale plant such as conventional used paper recycling factory, the running speed of the mesh belt of this type is set at least at 100 m/min or more, or even more than 1000 m/min in a faster version. - The running speed of the
mesh belt 105 is related not only to the array sate of pulp fibers in the pulp suspension PS, but also to the weight of the wet paper RP0 in the paper making process, and the weight increases when the running speed of themesh belt 105 is decreased, and the weight drops when the running speed picks up. In this case, the degree of beating of the used paper pulp UPP influences water filtering of themesh belt 105, and when the beating degree and the pulp concentration are constant, a specific weight can be obtained. - Concerning the running inclination angle α of the
mesh belt 105, themesh belt 105 in the illustrated preferred embodiment is disposed so as to run obliquely and straightly toward its running direction, as shown inFIG. 1 ,FIG. 5 , andFIG. 6 , and in the limited space of installation, the paper making process length can be extended considerably, and the filtering and dewatering rate is enhanced in the relation with the paper making mesh structure of themesh belt 105. The running inclination angle α of themesh belt 105 is preferably set at 3 degrees to 12 degrees, or at 12 degrees in the illustrated preferred embodiment. - The
drive motor 106 for moving and driving themesh belt 105 is specifically an electric motor, and is connected electrically to theapparatus control unit 5. Thisdrive motor 106 is also used as the running and driving source of thedewatering roll unit 96 and the drying process unit 97 described below. - The
pulp supply unit 101 is a location for supplying a pulp suspension PS onto themesh belt 105 from the pulp making unit 2, and as shown inFIG. 6 , it is provided at the start end position of the paper making process of thepaper making conveyor 100, and the pulp suspension PS is diffused and supplied uniformly on the top surface of themesh belt 105 by thispulp supply unit 101. - By the second
suspension supply pump 90, the pulp suspension PS supplied into thepulp supply unit 101 from thepulp supply tank 89 is stored and reserved by a specified amount in thispulp supply unit 101, and by this reserving action, it is diffused uniformly on the top surface of themesh belt 105. The pulp suspension PS diffused uniformly on the top surface of themesh belt 105 is conveyed together with themesh belt 105 by the driving action of themesh belt 105 in the arrow direction, and is filtered by weight by the mesh cells of themesh belt 105, and is dewatered, and wet paper RP0 is obtained. In this case, the pulp fibers in the pulp suspension PS on themesh belt 105 are filtered and dewatered directly in a non-directional and disorderly array state as mentioned above, and “texture of paper” does not appear at all on the recycled paper RP as described below. - The white water W filtered and dewatered by this mesh belt 105 (pulp water of ultra-low concentration filtered by the paper making mesh in the paper making process) is collected in the white
water collection tank 45 of thewater feed device 27 as mentioned above. - The
dewatering roll unit 96 forms a location for squeezing and dewatering the wet paper RP0 on themesh belt 105 at the linkage position of the papermaking process unit 95 and the drying process unit 97 described below. - Specifically, a
smooth surface belt 145 mentioned below of the drying process unit 97 at the downstream side, and themesh belt 105 of the papermaking process unit 95 at the upstream side are disposed in upper and lower layers as shown inFIG. 1 , and the upper and lower adjacent portions of thesmooth surface belt 145 and themesh belt 105 are formed at the linkage portion, and at this linkage portion, thedewatering roll unit 96 rolls and compresses themesh belt 105 and thesmooth surface belt 145 from upper and lower sides, thereby dewatering the wet paper. - The
dewatering roll unit 96 includes at least a preliminarydewatering roll unit 96A, and a finaldewatering roll unit 96B as principal components. - The
dewatering roll unit 96 in the illustrated preferred embodiment includes, as specifically shown inFIG. 1 , the preliminarydewatering roll unit 96A, the finaldewatering roll unit 96B, and an angle defining roll unit 96C as assisting means, as principal components. - The preliminary
dewatering roll unit 96A is for squeezing and dewatering preliminarily the wet paper RP0 on themesh belt 105, and specifically includes a preliminary squeezingroll pair 122 consisting of apreliminary dewatering roll 120 rolling on themesh belt 105 from the lower side, and apreliminary press roll 121 rolling and pressurizing on thesmooth surface belt 145 from the upper side in collaboration with thepreliminary dewatering roll 120. - By the preliminary squeezing
roll pair 122 consisting of thepreliminary dewatering roll 120 and thepreliminary press roll 121, themesh belt 105 and thesmooth surface belt 145 are rolled and squeezed from both upper and lower sides at a specified preliminary pressure in a compressed state, and the water content in the wet paper RP0 on themesh belt 105 is removed preliminarily. - In this case, the preliminary pressure, that is, the preliminary squeezing force of the
preliminary dewatering roll 96A for preliminarily squeezing and dewatering the wet paper RP0 on themesh belt 105 is set at a magnitude so as not to destroy the wet paper RP0 of high water content, and in the illustrated preferred embodiment, the preliminary squeezing force is determined so that the water content of the wet paper RP0 on themesh belt 105 after preliminary dewatering process may be in a range of 80 to 75%. - The final
dewatering roll unit 96B is for obtaining a dry paper specified water content (recycled paper) RP by further squeezing and dewatering the wet paper RP0 on themesh belt 105 after preliminary dewatering by the preliminarydewatering roll unit 96A, and specifically includes at least one set of a final squeezingroll pair 127 consisting of afinal dewatering roll 125 rolling on themesh belt 105 from the lower side, and afinal press roll 126 rolling and pressing on thesmooth surface belt 145 from the upper side in cooperation with thefinal dewatering roll 125. - By the final squeezing
roll pair 127 consisting of thefinal dewatering roll 125 and thefinal press roll 126, themesh belt 105 and thesmooth surface belt 145 are rolled and squeezed from both upper and lower sides at a specified final pressure in a compressed state, and the water content in the wet paper RP0 on themesh belt 105 is finally removed, and a dry paper of specified water content, that is, recycled paper RP is obtained. - In this case, the final pressure, that is, the final squeezing force of the
final dewatering roll 96B for finally squeezing and dewatering the wet paper RP0 on themesh belt 105 is set to such a magnitude for obtaining a specified dewatering effect securely about the preliminarily dewatered wet paper RP0, and in the illustrated preferred embodiment, it is set so that the water content of the dry paper (recycled paper) RP on themesh belt 105 after the final dewatering process may be in a range of 70 to 65%. - These
rolls dewatering roll unit 96 are not specifically shown, but as being driven and coupled to thesingle drive motor 106 by driving and coupling means of gear mechanism, all rolls 120, 121,125,126 are rotated and driven in mutual interaction. - In this case, these
rolls lower rolls mesh belt 105 and the upper side of the smooth surface belt 145) of themesh belt 105 and thesmooth surface belt 145 rolled and squeezed in a compressed state between the outer circumferential surfaces. - Specifically, the rotating speed of the upper side preliminary and final press rolls 121, 126 is set slightly larger than the rotating speed of the lower side preliminary and final dewatering rolls 120, 125, and therefore the running speed of the
smooth surface belt 145 is set slightly larger than the running speed of themesh belt 105. In such configuration, as described below, when the wet paper RP0 squeezed and dewatered by thedewatering roll unit 96 is transferred and conveyed to the lower side of the upper sidesmooth surface belt 145 from the upper side of the lowerside mesh belt 105, a tension is applied to the wet paper RP0, and wrinkling of the wet paper RP0 is effectively prevented. - The angle defining roll unit (angle defining means) 96C is for assisting the squeezing and dewatering action of the preliminary
dewatering roll unit 96A and the finaldewatering roll unit 96B to be effective, and it is provided at the upstream side of the preliminarydewatering roll unit 96A, and defines the inclination angle between themesh belt 105 and thesmooth surface belt 145 inserted in the preliminarydewatering roll unit 96A. - The angle defining roll unit 96C is specifically for defining the inclination angle between the
mesh belt 105 and thesmooth surface belt 145 inserted in the preliminarydewatering roll unit 96A, and more specifically it includes a meshbelt guide roll 130 rolling on themesh belt 105 from the lower side, and defining the insertion angle of themesh belt 105 in the preliminarydewatering roll unit 96A, and a smooth surfacebelt guide roll 131 rolling on thesmooth surface belt 145 from the upper side, and defining the insertion angle of thesmooth surface belt 145 in the preliminarydewatering roll unit 96A. - By the mesh
belt guide roll 130, the insertion angle of themesh belt 105 in the preliminarydewatering roll unit 96A is defined, and by the smooth surfacebelt guide roll 131, the insertion angle of thesmooth surface belt 145 in the preliminarydewatering roll unit 96A is defined, and therefore the inclination angle between themesh belt 105 and thesmooth surface belt 145 is indirectly determined in a specified range. - The inclination angle of the
mesh belt 105 and thesmooth surface belt 145 is determined so as to prevent effectively the wet paper RP0 from returning to slurry by re-absorption of a large volume of squeezed water into the wet paper RP0 after the water contained in the wet paper RP0 is once squeezed substantially to the upstream side of the preliminarydewatering roll unit 96A by the preliminary dewatering action by the preliminarydewatering roll unit 96A. - That is, by the
preliminary dewatering roll 120 and thepreliminary press roll 121 of thepreliminary dewatering roll 96A, when themesh belt 105 and thesmooth surface belt 145 on which the wet paper RP0 is mounted at the upper side are squeezed and rolled from the upper and lower sides in a compressed state, the water content in the wet paper RP0 is squeezed out to the upstream side of the bothrolls - In this case, if the inclination angle α between the
mesh belt 105 and thesmooth surface belt 145 is too large, at a position near the upstream side of the bothrolls smooth surface belt 145 is apart from the wet paper RP0 on the lowerside mesh belt 105, and hence a part of the abundant squeezed water contained in the wet paper RP0 may be absorbed again in the wet paper RP0, and the wet paper RP0 may become slurry again. - By contrast, when the inclination angle α between the
mesh belt 105 and thesmooth surface belt 145 is small, at a position near the upstream side of the bothrolls smooth surface belt 145 is pressed to the wet paper RP0 on the lowerside mesh belt 105, and hence all of the water squeezed from the wet paper RP0 drops to the lower side by way of themesh belt 105, and is not absorbed again in the wet paper RP0, and the wet paper RP0 may be prevented from becoming slurry again. - The inclination angle α between the
mesh belt 105 and thesmooth surface belt 145 is preferably set in a range of 1 to 20 degrees as a result of various tests, preferably 3 to 7 degrees, and it is set at 5 degrees in the illustrated preferred embodiment. - Thus, by driving of the
drive motor 106, therolls dewatering roll unit 96A and the finaldewatering roll unit 96B in thedewatering roll unit 96 are put in rotation, and first by the preliminary squeezingroll pair 122 in the preliminarydewatering roll unit 96A, themesh belt 105 and thesmooth surface belt 145 are rolled and squeezed from both upper and lower sides in a compressed state at a specified preliminary pressure, and the water contained in the wet paper RP0 on themesh belt 105 is preliminarily removed (in the illustrated preferred embodiment, the water content in the wet paper RP0 is reduced from 90 to 85% to 80 to 75%) - In succession, by the final squeezing
roll pair 127 in the finaldewatering roll unit 96B, themesh belt 105 and thesmooth surface belt 145 are rolled and squeezed from both upper and lower sides in a compressed state at a specified final pressure, and the water contained in the wet paper RP0 on themesh belt 105 is finally removed, and the dry paper of specified water content, that is, the recycled paper RP is obtained (in the illustrated preferred embodiment, the wet paper RP0 of water content of 80 to 75% is dewatered to the dry paper RP of water content of 70 to 65%) . In this series of process, the white water W squeezed and dewatered from the wet paper RP0 is collected in the whitewater collection tank 45 in thewater feed device 27. - The wet paper RP0 squeezed and dewatered by the
dewatering roll unit 96 is transferred and conveyed to the lower side of the upper sidesmooth surface belt 145 from the upper side of the lowerside mesh belt 105, at a downstream side location of thedewatering roll unit 96, and is conveyed together with thesmooth surface belt 145, and is dried by the drying process unit 97 in the drying process. - This transfer action is considered to be caused by a smooth surface structure of the
smooth surface belt 145. That is, the surface of the lowerside mesh belt 105 is a fine rough surface having multiple fine continuous pores, whereas the surface of the upper sidesmooth surface belt 145 is a smooth surface without pores, and hence the wet paper RP0 slightly containing water seems to be adsorbed by the surface tension against the surface of thesmooth surface belt 145. - The drying process unit 97 is a location for producing generated paper RP by further drying the wet paper RP0 once squeezed and dewatered in the
dewatering roll unit 96 after the paper making process in the papermaking process unit 95, and mainly includes a dryingconveyor 140 and a heating anddrying unit 141. - The drying
conveyor 140 is for smoothing and conveying the wet paper RP0 squeezed and dewatered in thedewatering roll unit 96, and mainly includes thesmooth surface belt 145, and thedrive moor 106 for driving and moving thissmooth surface belt 145. - The
smooth surface belt 145 is to convey the wet paper RP0 while heating and drying, and is specifically an endless belt connected and formed in an annular shape of a specified length of a plate material of smooth surface structure having a specified width. The plate material of smooth surface structure is finished in an appropriate smooth surface at one side of the surface of the wet paper RP0, and is made of a material capable of withstanding the heating action of the heating anddrying unit 141 described below, and preferably an elastic heat resistant material is used such as fluorine resin or stainless steel, and a fluorine resin belt is used in the illustrated preferred embodiment. - This
smooth surface belt 145 is, as shown inFIG. 1 , rotatably supported and held by way of adrive roller 146, drivenrollers dewatering roll unit 96, and is driven and coupled to thedrive motor 106 by way of thedrive roller 146. - The
drive motor 106 for driving and moving thesmooth surface belt 145 is commonly used as the running and driving source of thepaper making conveyor 100 and thedewatering roll unit 96 as described above. - The heating and
drying unit 141 is a location for heating and drying the wet paper RP0 on thesmooth surface belt 145, and includes aheater plate 150, as a heating unit, disposed in the midst of the running route of thesmooth surface belt 145. - This
heater plate 150 is specifically configured to heat and dry the wet paper RP0 on thesmooth surface belt 145 indirectly by way of thesmooth surface belt 145. - In the midst of the running route of the
smooth surface belt 145, two smooth surface finishing rolls 149, 149 are disposed, and are configured so as to roll and pressurize the wet paper RP0 on thesmooth surface belt 145 sequentially, and thereby the surface of one side and the surface of opposite side of the wet paper RP0 contacting with the surface of thesmooth surface belt 145 may be finished to a proper smooth surface. - At the downstream side of the heating and
drying unit 141 in thesmooth surface belt 145, a peelingmember 151 is provided, and the dry paper dried and conveyed on thesmooth surface belt 145, that is, the recycled paper RP is sequentially peeled from the holding side of thesmooth surface belt 145. - In this relation, at the terminal end position of the running route of the
smooth surface belt 145 at the downstream side of this peelingmember 151, a fixedsize cutter unit 152 is provided, and the recycled paper RP peeled off from thesmooth surface belt 145 is cut to a specified size (an A4 format in the illustrated preferred embodiment), and is discharged from thedischarge port 8 of theapparatus case 6. - The
apparatus control unit 5 is to control the operations of the drive units of the pulp making unit 2, the pulpconcentration adjusting unit 3, and thepaper making unit 4 automatically by interacting with each other, and is specifically composed of a microcomputer having a CPU, a ROM, a RAM, and an I/O port. - This
apparatus control unit 5 incorporates programs for executing the pulp making process of the pulp making unit 2, the concentration adjusting process of theconcentration adjusting unit 3, and the paper making process of thepaper making unit 4, by interacting with each other, and also stores various items of information necessary for driving of the components 2 (20, 21), 3 (3A, 3B), and 4 (95, 10, 96), for example, the driving time and rotating speed of the agitatingdevice 26 in the maceratingunit 20, the water feed timing and water feed amount of thewater feed device 27, the driving time and circulation amount of thecirculation pump 69 in thebeating unit 21, the driving time and rotating speed of thegrinder 50, the adjusting timing and beating gap G adjusting amount of the gap adjusting means 57, the running speed of theconveyors paper making unit 4, the driving time of the heating anddrying unit 141, and the operation timing of the fixedsize cutter unit 152, preliminarily as data, or from the keyboard as appropriate selective input data. - In the
apparatus control unit 5, as mentioned above, theweight sensors drive units apparatus control unit 5 controls thesedrive units - The used
paper recycling apparatus 1 having such configuration is started when the power source is turned on, and the components 2 (20, 21), 3 (3A, 3B), and 4 (95, 10, 96) are controlled automatically by theapparatus control unit 5 in mutual interaction, and the used paper UP, UP, . . . charged in theinlet 7 of theapparatus case 6 are macerated and beaten by the maceratingunit 20 and thebeating unit 21 in the pulp making unit 2, and the used paper pulp UPP is manufactured, and further a pulp suspension PS of a paper making concentration is manufactured in the pulpconcentration adjusting unit 3, and this pulp suspension PS is manufactured in the papermaking process unit 95 of thepaper making unit 4, thedewatering roll unit 96, and the drying process unit 97, and recycled paper RP is obtained, which is discharged into the recycledpaper receiving tray 9 from the discharge port 8 b of theapparatus case 6. - In this case, the paper quality control condition of the
mesh belt 105 is determined so that the pulp fibers in the pulp suspension PS supplied on themesh belt 105 may be maintained in a non-directional and disorderly array state, and therefore the obtained recycled paper RP is free from “texture of paper”, and the paper quality is uniform without difference in longitudinal and lateral direction, and the strength is sufficient, and along with the purpose of prevention of leak or disclosure of confidential information, personal information, and various forms of information, the used paper UP used repeatedly by regeneration processes is not lowered in the strength, and the recycled paper RP withstanding use for a long period may be presented. - Accordingly, the present invention realizes and presents a used paper recycling apparatus of furniture size that can be installed not only in a large office, but also in a small shop or a general household, being friendly to the environment, low in running cost, capable of preventing leak or disclosure of confidential information, personal information, and various types of information, and capable of maintaining a high confidentiality.
- In the mentioned above preferred embodiment, for example, the design may be changed or modified as follows.
- For example, the specific numerical values of the paper quality control condition of the
mesh belt 105 are obtained from a comprehensive combination condition of the running speed of themesh belt 105 in the configuration of the illustrated preferred embodiment, the running inclination angle α of themesh belt 105, and the paper making mesh structure of the mesh belt, and they are not particularly limited as far as the pulp fibers in the pulp suspension PS supplied on themesh belt 105 may be maintained in a range of a non-directional and disorderly array state. - As the invention may be embodied in several forms without departing from the spirit of essential characteristics thereof, the present embodiment is therefore illustrative and not restrictive, since the scope of the invention is defined by the appended claims rather than by the description preceding them, and all changes that fall within metes and bounds of the claims, or equivalence of such metes and bounds thereof are therefore intended to be embraced by the claims.
Claims (13)
1. A paper making device of a used paper recycling apparatus for manufacturing recycled paper from used paper pulp manufactured in a pulp making unit of a preceding process, in the used paper recycling apparatus of furniture size to be installed at the site of origin of the used paper, comprising:
a paper making process unit for making wet paper by making from the slurry-type pulp suspension mixed of used paper pulp and water sent from the pulp making unit,
wherein this paper making process unit has a paper making conveyor for manufacturing and conveying the pulp suspension, and this paper making conveyor is disposed and configured to drive a mesh belt of paper making mesh structure composed of numerous mesh cells while filtering and dewatering the pulp suspension, and
the paper quality control condition of the mesh belt is set in a range of maintaining the pulp fibers in the pulp suspension supplied on the mesh belt in a non-directional and disorderly array state.
2. The paper making device of the used paper recycling apparatus of claim 1 ,
wherein the paper quality control condition of the mesh belt at least includes the running speed of the mesh belt and the running inclination angle of the mesh belt.
3. The paper making device of the used paper recycling apparatus of claim 1 ,
wherein the running speed of the mesh belt is set at 0.1 m/min to 1.8 m/min.
4. The paper making device of the used paper recycling apparatus of claim 1 ,
wherein the mesh belt is disposed and configured so as to run obliquely upward and straightly toward its running direction.
5. The paper making device of the used paper recycling apparatus of claim 4 ,
wherein the running inclination angle of the mesh belt is set at 3 degrees to 12 degrees.
6. The paper making device of the used paper recycling apparatus of claim 1 ,
wherein the paper making process unit is provided at a starting end position of the paper making process of the paper making conveyor, and includes a pulp supply unit for supplying the pulp suspension sent from the pulp making device into the paper making conveyor, and
by this pulp supply unit, the pulp suspension is spread uniformly and supplied on the upper side of the mesh belt of the paper making conveyor.
7. The paper making device of the used paper recycling apparatus of claim 1 ,
wherein the paper making mesh structure of the mesh belt is composed so that the pulp suspension supplied on the mesh belt may be filtered and dewatered to be wet paper of an appropriate weight in the process of the mesh belt running for a specified running distance.
8. The paper making device of the used paper recycling apparatus of claim 1 ,
wherein the mesh size of the mesh belt is 25 mesh cells to 80 mesh cells.
9. The paper making device of the used paper recycling apparatus of claim 1 ,
wherein the paper making process length of the mesh belt is set in a range of a straight running direction length of the mesh belt in the apparatus case of furniture size.
10. The paper making device of the used paper recycling apparatus of claim 1 ,
wherein the paper making process length of the mesh belt is set in relation to the running speed of the mesh belt and the paper making mesh structure, so that the pulp suspension may be manufactured into an appropriate weight, and that the paper making conveyor having the mesh belt may be contained within the apparatus case of furniture size.
11. The paper making device of the used paper recycling apparatus of any one of claims 1 to 10 , further comprising:
the paper making process unit for obtaining wet paper by manufacturing from slurry-like pulp suspension composed of water and used paper pulp sent from the pulp making device,
a drying process unit for obtaining recycled paper by drying the wet paper manufactured and formed in the paper making process unit, and
a dewatering roll unit for squeezing and dewatering the wet paper at a linkage part of the paper making process unit and the drying process unit,
wherein the pulp suspension supplied from the pulp making device is manufactured, dewatered, and dried.
12. The paper making device of the used paper recycling apparatus of claim 1 ,
wherein the paper making conveyor unit includes the mesh belt as an endless belt for manufacturing and conveying the pulp suspension, and a drive motor for driving and moving the mesh belt.
13. A used paper recycling apparatus comprising, in an apparatus case of furniture size to be installed at the site of origin of used paper, a pulp making unit for manufacturing used paper pulp by macerating and beating used paper, a paper making process unit for manufacturing recycled paper by making from the used paper pulp manufactured in the pulp making unit, and a control unit for driving and controlling the pulp making unit and the paper making unit in cooperation,
wherein the paper making process unit includes a paper making process unit for making wet paper by making from the slurry-type pulp suspension mixed of used paper pulp and water sent from the pulp making unit,
the paper making process unit has a paper making conveyor for manufacturing and conveying the pulp suspension, and
the paper making conveyor is disposed and configured to drive a mesh belt of paper making mesh structure composed of numerous mesh cells while filtering and dewatering the pulp suspension, and
the paper quality control condition of the mesh belt is set in a range of maintaining the pulp fibers in the pulp suspension supplied on the mesh belt in a non-directional and disorderly array state.
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JP2009112371A JP2010261120A (en) | 2009-05-02 | 2009-05-02 | Paper-making device of waste paper-reclaiming apparatus and waste paper-reclaiming apparatus |
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EP (1) | EP2248942A1 (en) |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103422385A (en) * | 2012-05-30 | 2013-12-04 | 上海理工大学 | Office and domestic use regeneration paper machine |
US20170370644A1 (en) * | 2016-06-23 | 2017-12-28 | Valmet Technologies Oy | Nozzle of a Device for Contact - Free Treatment of a Running Fiber Web |
CN113171643A (en) * | 2021-05-28 | 2021-07-27 | 大连工业大学 | Dry-wet separator based on roller mill |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2484936A (en) * | 2010-10-26 | 2012-05-02 | Office2Office | Paper Recycling System |
JP5656739B2 (en) * | 2010-12-17 | 2015-01-21 | デュプロ精工株式会社 | Waste paper recycling processor |
JP2017115259A (en) * | 2015-12-24 | 2017-06-29 | デュプロ精工株式会社 | Waste paper recycling processing apparatus |
JP6722494B2 (en) * | 2016-04-11 | 2020-07-15 | デュプロ精工株式会社 | Used paper recycling processor |
CN108867138A (en) * | 2018-07-11 | 2018-11-23 | 卢俊超 | A kind of safely and fast efficient papermaking apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080179031A1 (en) * | 2007-01-28 | 2008-07-31 | Shigeru Tamai | Paper machine for used paper recycling apparatus |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5160584A (en) * | 1989-10-12 | 1992-11-03 | Beloit Technologies, Inc. | High consistency sheet former |
JP5105271B2 (en) * | 2005-09-22 | 2012-12-26 | 株式会社シード | Waste paper recycling apparatus, pulp manufacturing apparatus, pulp supply apparatus, and dewatering apparatus |
JP5207507B2 (en) * | 2007-01-20 | 2013-06-12 | 株式会社シード | Paper machine for used paper recycling equipment |
JP2009001925A (en) * | 2007-06-19 | 2009-01-08 | Seed:Kk | Papermaking device of waste paper recycling apparatus |
-
2009
- 2009-05-02 JP JP2009112371A patent/JP2010261120A/en active Pending
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2010
- 2010-04-13 US US12/759,484 patent/US20100276101A1/en not_active Abandoned
- 2010-04-28 EP EP20100250850 patent/EP2248942A1/en not_active Withdrawn
- 2010-04-29 CN CN2010101693856A patent/CN101876151A/en active Pending
- 2010-04-29 KR KR20100040193A patent/KR20100119844A/en not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080179031A1 (en) * | 2007-01-28 | 2008-07-31 | Shigeru Tamai | Paper machine for used paper recycling apparatus |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103422385A (en) * | 2012-05-30 | 2013-12-04 | 上海理工大学 | Office and domestic use regeneration paper machine |
US20170370644A1 (en) * | 2016-06-23 | 2017-12-28 | Valmet Technologies Oy | Nozzle of a Device for Contact - Free Treatment of a Running Fiber Web |
US10006709B2 (en) * | 2016-06-23 | 2018-06-26 | Valmet Technologies Oy | Nozzle of a device for contact—free treatment of a running fiber web |
CN113171643A (en) * | 2021-05-28 | 2021-07-27 | 大连工业大学 | Dry-wet separator based on roller mill |
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JP2010261120A (en) | 2010-11-18 |
EP2248942A1 (en) | 2010-11-10 |
CN101876151A (en) | 2010-11-03 |
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