EP0369073A1 - Vorrichtung zum Lagern von Papierherstellungsmaterial - Google Patents

Vorrichtung zum Lagern von Papierherstellungsmaterial Download PDF

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Publication number
EP0369073A1
EP0369073A1 EP88310761A EP88310761A EP0369073A1 EP 0369073 A1 EP0369073 A1 EP 0369073A1 EP 88310761 A EP88310761 A EP 88310761A EP 88310761 A EP88310761 A EP 88310761A EP 0369073 A1 EP0369073 A1 EP 0369073A1
Authority
EP
European Patent Office
Prior art keywords
paper
making material
tower
diluting
stirrer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88310761A
Other languages
English (en)
French (fr)
Other versions
EP0369073B1 (de
Inventor
Tokushichi Yamazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE8888310761T priority Critical patent/DE3873343T2/de
Publication of EP0369073A1 publication Critical patent/EP0369073A1/de
Application granted granted Critical
Publication of EP0369073B1 publication Critical patent/EP0369073B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/28—Tanks for storing or agitating pulp

Definitions

  • This invention relates to a paper-making material deposition apparatus of the tower type, in which a paper-­making material with a concentration of 10 to 30% is charged into a tower from an inlet at the top to be deposited and diluted and progressively taken out of the tower from the bottom thereof.
  • the prior art paper-making material deposition apparatus of the type referred to above is used as a virgin pulp stock tower or an ink removal tower for causing swelling of paper-making material consisting of used paper in the presence of an ink-removing agent while liberating or making easier the liberation of ink adhering to the material.
  • the apparatus comprises a tower having a paper-making material inlet provided at the top for depositing the paper-making material in the inside and a stirrer rotatable in a horizontal plane in and adjacent to the bottom of the tower and having diluting-water jet nozzles and diluting-water supply passages leading to the jet nozzles (as disclosed in, for instance, Japanese Patent Publications SHO 55-37638 and SHO 57-55835).
  • a driver including a motor and a speed reduction unit is disposed on the tower top for rotating the stirrer, and the driver transmits drive force to the upper end of a vertical shaft, to the lower end of which the center of the stirrer is secured, and which is supported at the center of the tower bottom and the center of the tower top.
  • the stirrer is rotated in a deposited paper-­making material layer on the tower bottom while jetting diluting water from the jet nozzles.
  • Some such towers are of a gigantic size having a diameter of 10 m and a height of 20 m.
  • the top of the vertical shaft is journaled at the center of the tower top, and the driver is disposed near the center. Therefore, the paper-making material inlet has to be provided at an eccentric position with respect to the tower top center. Therefore, the top surface of the paper-making material deposited in the tower is not uniform in level but is higher in level in the neighborhood of a position directly underneath the paper-­making material inlet. For this reason, the load exerted on or resistance offered to the stirring wings of the stirrer rotated horizontally adjacent to the tower bottom by the vertical shaft which is as long as 20 m varies greatly. This means that the vertical shaft support unit and stirrer have to have considerably high mechanical strength.
  • An object of the invention is to provide a paper-­making material deposition apparatus in which a substantially uniform load is applied to the stirring wings of the stirrer.
  • a paper-making material deposition apparatus comprising a tower having a paper-making material inlet provided at the top for depositing a paper-­making material in the inside and a stirrer having stirring wings rotatable in a substantially horizontal plane in and adjacent to the bottom of said tower and having diluting-water jet nozzles and diluting-water supply passages leading to said jet nozzles, said stirrer having an integral shaft depending from the center thereof and penetrating the center of the tower bottom, a driver for rotating said shaft being disposed beneath said tower bottom.
  • the driver disposed beneath the tower bottom center transmits drive force to the shaft integrally and downwardly extending from the stirrer and penetrating the tower bottom center.
  • the convential vertical stirrer support shaft can be dispensed with, and the paper-making material inlet can be provided near the tower top center.
  • the paper-making material charged into the tower can be uniformly distributed from the center, and there is no need of particularly reinforcing the mechanical strength of the stirring wings of the stirrer.
  • Figures 1 to 3 show a first embodiment of the paper-making material deposition apparatus according to the invention.
  • reference numeral 1 designates a tower, 2 a paper-making material inlet provided at the center of the tower top, and 3 a stirrer rotatable in a horizontal plane in the tower adjacent to the bottom thereof.
  • the stirrer 3 includes a hollow central stem 4 and a plurality, i.e., two in this embodiment, of hollow horizontal stirring wings 5 circumferentially uniformly spaced apart around and extending outwardly from the stem 4.
  • Each stirring wing 5 has a plurality of diluting-water jet nozzles 6 provided at a predetermined interval along its front surface in the direction of its rotation as shown by the solid arrow in Figure 2.
  • a hollow short shaft 7 depends integrally and concentrically from the lower surface of the stem 4.
  • a space 8′ is formed in a concrete foundation 8.
  • a frame 9 is built on the bottom of the space 8′ such that it surrounds a lower half of the shaft 7.
  • An inner race 10a of a bearing 10 is secured to the top of the frame 9 such that it is concentric with the shaft 7.
  • the shaft 7 is provided with a flange 11 extending from its outer periphery.
  • An outer race 10b of the bearing 10 is secured to the lower surface of the flange 11.
  • the outer periphery of the outer race 10b is provided with a gear 10c, which is in mesh with a gear 12′ provided on an output shaft of a driver 12 disposed on the frame 9 and consisting of a motor, a speed reduction gear train, etc.
  • the bearing 10 serves to receive the drive force from the driver 12 and enables smooth rotation of the flange 11, and hence the stirrer 3 integral with the shaft 7. In addition, it receives the thrust of the stirrer 3.
  • each stirring wing 5 of the stirrer 3 has a dual structure.
  • An inside pipe 5′ of the stirring wing 5 serves as a paper-­making material take-out passage 14 which has a paper-­making material suction port 14′ open at the end of the stirring wing 5.
  • a space defind between the inner surface of the stirring wing 5 and the outer surface of the inside pipe 5′ serves as a diluting-water supply passage 13.
  • the inside of each stirring wing 5 may be divided by a partition member (not shown) into a diluting-water supply passage 13 extending along the front surface and a paper-making material take-­out passage 14 extending along the rear surface.
  • a cylinder 15 spaced apart a distance from and surrounding an upper half of the shaft 7 depends from the lower surface of the central stem 4 of the stirrer 3, and its lower end sealedly and rotatably downwardly extends into an upper joint box 16 rotatably and sealedly mounted on the outer periphery of the shaft 7.
  • a diluting-water supply ductline 17 is connected to the upper joint box 16, and the upper end of a cylindrical space defined inside the cylinder 15 is communicated through a communication hole 4′ formed in a lower portion of the wall of the stem 4 with the diluting-water supply passage 13 in each stirring wing 5.
  • the stirrer 3 When the stirrer 3 is rotated in unison with the shaft 7 and cylinder 15 at a rate of 15 to 20 rpm from the driver 12 while supplying diluting water to the upper joint box 16, the diluting water is caused to rise through the cylindrical space surrounded by the cylinder 15 to enter the inner space of the stem 4 through each communication hole 4′ and flow to each passage 13 so as to be jetted from the jet nozzles 6.
  • each stirring wing 5 In order to be able to extract the diluted paper-­making material at the tower bottom to the outside of the tower 1 during the rotation of the stirrer 3, the upper end of the shaft 7 and paper-making material take-out passage 14 in each stirring wing 5 are communicated with each other by a joint cylinder 18.
  • the paper-making material take-out passage 14 is provided in each of the two stirring wings 5, but it is possible to provide a take-out passage in only a single stirring wing.
  • FIG. 4 shows a second embodiment of the invention.
  • the side surface of the tower 1 adjacent to the bottom thereof is provided with a paper-making material extraction port in which a suction pump 21 is mounted. Paper-making material having been diluted by the stirrer 3 is extracted through this extraction port.
  • the entire inner space of each stirring wing 5 of the stirrer 3 constitutes a diluting-water supply passage, and the diluting-water supply ductline 17 is connected to a lower joint box 19.
  • the cylinder 15 and upper joint box 16 in the previous embodiment are unnecessary in this case.
  • the structure according to the invention is free from any vertical stirrer support shaft journaled at the tower top center or any driver for rotating such a vertical shaft, so that it is possible to provide the paper-making material inlet near the tower top center.
  • the paper-­making material charged into the tower from the inlet thus is substantially uniformly distributed in the tower, thus precluding variations of the load on the stirring wings of the stirrer rotated horizontally in the tower adjacent to the bottom thereof.
  • the downwardly extending shaft for rotating the stirrer may be far shorter than that of the conventional vertical shaft having a height of 10 to 20 m. Owing to this fact and also owing to the substantial freedom from variations of the load on the stirring wings of the horizontally rotated stirrer, the shaft need have only low mechanical strength.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP88310761A 1987-06-05 1988-11-15 Vorrichtung zum Lagern von Papierherstellungsmaterial Expired EP0369073B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8888310761T DE3873343T2 (de) 1987-06-05 1988-11-15 Vorrichtung zum lagern von papierherstellungsmaterial.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62139857A JPH0791796B2 (ja) 1987-06-05 1987-06-05 製紙用紙料の堆積装置
CA000583186A CA1324908C (en) 1987-06-05 1988-11-15 Paper-making material deposition apparatus

Publications (2)

Publication Number Publication Date
EP0369073A1 true EP0369073A1 (de) 1990-05-23
EP0369073B1 EP0369073B1 (de) 1992-07-29

Family

ID=25672232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88310761A Expired EP0369073B1 (de) 1987-06-05 1988-11-15 Vorrichtung zum Lagern von Papierherstellungsmaterial

Country Status (4)

Country Link
EP (1) EP0369073B1 (de)
JP (1) JPH0791796B2 (de)
CA (1) CA1324908C (de)
DE (1) DE3873343T2 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB720196A (en) * 1952-02-07 1954-12-15 Sutherland Internat Ltd Improvements in or relating to a process for making paper pulp
FR2147894A1 (de) * 1971-08-04 1973-03-11 Neyrpic
FR2192863A1 (de) * 1972-07-18 1974-02-15 Improved Machinery Inc
EP0094061A2 (de) * 1982-05-07 1983-11-16 Fujimoto Pollcon Co., Ltd. Vorrichtung zur Auflösung von Pulpe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS561756Y2 (de) * 1977-07-20 1981-01-16
JPS60146092A (ja) * 1984-01-11 1985-08-01 小林　昌志 製紙用紙料の堆積装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB720196A (en) * 1952-02-07 1954-12-15 Sutherland Internat Ltd Improvements in or relating to a process for making paper pulp
FR2147894A1 (de) * 1971-08-04 1973-03-11 Neyrpic
FR2192863A1 (de) * 1972-07-18 1974-02-15 Improved Machinery Inc
EP0094061A2 (de) * 1982-05-07 1983-11-16 Fujimoto Pollcon Co., Ltd. Vorrichtung zur Auflösung von Pulpe

Also Published As

Publication number Publication date
EP0369073B1 (de) 1992-07-29
DE3873343D1 (de) 1992-09-03
CA1324908C (en) 1993-12-07
DE3873343T2 (de) 1992-12-10
JPS63309690A (ja) 1988-12-16
JPH0791796B2 (ja) 1995-10-04

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