US20130341445A1 - Pulper - Google Patents

Pulper Download PDF

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Publication number
US20130341445A1
US20130341445A1 US13/847,233 US201313847233A US2013341445A1 US 20130341445 A1 US20130341445 A1 US 20130341445A1 US 201313847233 A US201313847233 A US 201313847233A US 2013341445 A1 US2013341445 A1 US 2013341445A1
Authority
US
United States
Prior art keywords
cutter blade
rotor
tank
papermaking material
back surface
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.)
Abandoned
Application number
US13/847,233
Other languages
English (en)
Inventor
Masaki Aikawa
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.)
Aikawa Iron Works Co Ltd
Original Assignee
Aikawa Iron Works Co Ltd
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 Aikawa Iron Works Co Ltd filed Critical Aikawa Iron Works Co Ltd
Assigned to AIKAWA IRON WORKS CO., LTD. reassignment AIKAWA IRON WORKS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AIKAWA, MASAKI
Publication of US20130341445A1 publication Critical patent/US20130341445A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • 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
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/345—Pulpers
    • D21B1/347—Rotor assemblies
    • 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
    • D21B1/34—Kneading or mixing; Pulpers
    • 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
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/345—Pulpers

Definitions

  • the present invention relates to a pulper, and in particular, to a pulper including improved cutter blades.
  • a pulper wherein a papermaking material such as pulp and waste paper is inserted into a tank and is disintegrated in water disintegrates the papermaking material while circulating the papermaking material in the tank by means of a rotor provided in the tank (refer to Patent Document 1).
  • a pair of first cutter blades, a second clatter blade, and a third cutter blade that are individually attached to the rotor cut the papermaking material.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2008-291378
  • first cutter blades, the second cutter blades, and the third cutter blades must be individually (detached from and attached to the rotor, resulting in that it disadvantageously takes a long time to perform a construction operation.
  • the present invention has been made in consideration of the above-mentioned problem, and an object thereof is to provide a pulper including improved cutter blades.
  • a pulper in a first aspect comprises a tank including a papermaking material insertion port in an upper portion and a discharge port in a lower portion, the tank receiving the papermaking material and water; a strainer covering the discharge port of the tank; a rotor provided above the strainer in the tank, the rotor disintegrating the papermaking material; a front cutter blade attached to a back surface of the rotor, the front cutter blade extending long in a longitudinal direction along a front edge of a rotary vane of the rotor, the front edge being formed linearly in a plan view, the front cutter blade being formed linearly in a plan view; and an inclined cutter blade attached to the back surface of the rotor, the inclined cutter blade extending long in the longitudinal direction so as to be inclined away from the front cutter blade toward the outside, and the inclined cutter blade and the front cutter blade are integrally formed via an inner portion of the inclined cutter blade.
  • a pulper in a second aspect comprises a tank including a papermaking material insertion port in an upper portion and a discharge port in a lower portion, the tank receiving the papermaking material and water; a strainer covering the discharge port of the tank; a rotor provided above the strainer in the tank, the rotor disintegrating the papermaking material; a front cutter blade attached to a back surface of the rotor, the front cutter blade extending long in a longitudinal direction along a front edge of a rotary vane of the rotor; and an inclined cutter blade attached to the back surface of the rotor, the inclined cutter blade extending long in the longitudinal direction so as to be inclined away from the front cutter blade toward the outside, the inclined cutter blade and the front cutter blade are bonded to each other via an inner portion of the inclined cutter blade, the inclined cutter blade and the front cutter blade are also connected to each other via a flat surface, and the flat surface contacts with the back surface of the rotor.
  • a pulper of a third aspect comprises a tank including a papermaking material insertion port in an upper portion and a discharge port in a lower portion, the tank receiving the papermaking material and water; a strainer covering the discharge port of the tank; a rotor provided above the strainer in the tank, the rotor disintegrating the papermaking material; a front cutter blade attached to a back surface of the rotor, the front cutter blade extending in a longitudinal direction along a front edge of a rotary vane of the rotor; an inclined cutter blade attached to the back surface of the rotor, the inclined cutter blade extending long in the longitudinal direction so as to be inclined away from the front cutter blade toward the outside; and a flat surface connecting the inclined cutter blade to the front cutter blade, the flat surface is in contact with the back surface of the rotor.
  • the inclined cutter blade that is attached to the back surface of the rotor and extends long in the longitudinal direction so as to be inclined away from the front cutter blade toward the outside and the inclined cutter blade and the front cutter blade are integrally formed via the inner portion of the inclined cutter blade, the inclined cutter blade and the front cutter blade are provided adjacent to each other. As a result, when the inclined cutter blade is damaged, the front cutter blade is also damaged, so that attachment and detachment of the cutter blade can be performed in one replacement operation, improving the workability of replacement.
  • the front edge of the rotor described in the conventional example is not formed linearly, and thus the cutter blades attached to the front edge of the rotor are the pair of first cutter blades.
  • the front edge is formed linearly in a plan view, and the front cutter blade is also formed linearly in the plan view, both the front edge of the rotor and the front cutter blade can be easily worked.
  • the inclined cutter blade and the front cutter blade are connected to each other via the flat surface, coupling of the inclined cutter blade and the front cutter blade is enhanced. Moreover, since the flat surface contacts with the back surface of the rotor, that is, the back surface of the rotor is covered with the flat surface connecting the inclined cutter blade to the front cutter blade, the back surface of the rotor is prevented from being damaged by the papermaking material. Further, when the inclined cutter blade and the front cutter blade are damaged during use, the flat surface facing the papermaking material is also bored and damaged, attachment and detachment of the flat surface and the cutter blade can be performed in one replacement operation, improving the workability of replacement.
  • the papermaking material When the flat surface facing the papermaking material is bored and damaged, the papermaking material is accumulated in the damaged portion, and the accumulated papermaking material is not disintegrated, and suppresses movement of the papermaking material in the vicinity of the inclined cutter blade and the front cutter blade, decreasing the dissolving efficiency. Further, accumulation of the papermaking material increases only loads onto the rotor.
  • the inclined cutter blade and the front cutter blade are connected to each other via the flat surface, coupling of the inclined cutter blade and the front cutter blade is enhanced. Moreover, since the flat surface contacts with the back surface of the rotor, that is, the back surface of the rotor is covered with the flat surface connecting the inclined cutter blade to the front cutter blade, the back surface of the rotor is prevented from being damaged the papermaking material. Further, when the inclined cutter blade and the front cutter blade are damaged during use, the flat surface facing the papermaking material is also bored and damaged, so that attachment and detachment of the flat surface and the cutter blade can be performed in one replacement operation, improving the workability of replacement.
  • FIG. 1 is a schematic sectional view of a pulper according to an embodiment of the present invention.
  • FIG. 2 is a schematic exploded perspective view of a rotor and a strainer of the pulper in FIG. 1 .
  • FIG. 3 is a schematic plan view of the rotor in FIG. 2 .
  • FIG. 4 is a schematic bottom view of the rotor in FIG. 2 .
  • FIG. 5 is a schematic perspective view of a part of FIG. 2 when viewed from diagonally below.
  • FIG. 6 is a schematic exploded perspective view of a part of FIG. 5 .
  • P refers to a pulper wherein a papermaking material such as pulp and waste paper is inserted into a tank 1 to disintegrate the material in water, and the pulper P has a papermaking material insertion port 1 a in an upper portion, a discharge port 1 b in a lower portion, and the tank 1 for receiving the papermaking material and water.
  • a papermaking material such as pulp and waste paper
  • the tank 1 has an inverted cone-like platform 1 A located on a lower side and a cylindrical part 1 B located on an upper side, and the cylindrical part 1 B is connected to the inverted cone-like platform 1 A.
  • the papermaking material such as pulp and waste paper is continuously supplied into the tank 1 by a conveyor (not shown), water is supplied into the tank 1 by a first pipe (not shown), and the papermaking material disintegrated in the tank 1 is discharged to the outside of the tank 1 by a second pipe 2 .
  • numeral 3 refers to legs for supporting the tank 1 .
  • numeral 4 refers to a strainer provided to cover the discharge port 1 b of the tank 1 , and the strainer 4 is, for example, a disc having a large number of round holes.
  • numeral 5 refers to a rotor that is provided on the strainer 4 , and disintegrates the papermaking material. The rotor 5 is rotated via a belt 7 , a pulley 8 , and a rotational shaft 9 by power transmitted from a motor 6 .
  • each of numerals 5 A, 5 B is a protruding member that protrudes from a front edge AB of a vane of the rotor 5 (see FIG. 6 ), extends toward the strainer 4 , and has a substantially polygonal cross section across the direction perpendicular to the protruding members 5 A, 5 B.
  • Numeral 10 in FIG. 4 to FIG. 6 refers to a front cutter blade, and the front cutter blade 10 is attached to a back surface of the rotor 5 (more specifically, a back surface of the rotary vane of the rotor 5 ), and extends along the front edge AB of the rotary vane of the rotor 5 (see FIG. 6 ) in the longitudinal direction.
  • the front edge AB is formed linearly in a plan view
  • the front cutter blade 10 is formed linearly in a plan view (see FIGS. 3 to 6 ).
  • numeral 20 refers to an inclined cutter blade
  • the inclined cutter 20 is attached to the back surface of the rotor 5 (more specifically, is attached to the back surface of the rotary vane of the rotor 5 ), and extends long in the longitudinal direction so as to be inclined away from the front cutter blade 10 toward the outside as represented by an arrow X in FIG. 5 .
  • the inclined cutter blade 20 and the front cutter blade 10 are integrally formed via an inner portion 20 A of the inclined cutter blade 20 .
  • the papermaking material is circulated in the tank 1 by rotation of the rotor 5 , and is cut by the front cutter blade 10 and the inclined cutter blade 20 , which are provided on the back surface of the vane of the rotor 5 .
  • the papermaking material is also cut by edges of the corners of the protruding members 5 A, 5 B each having the polygonal cross section, which promotes disintegration of the papermaking material.
  • the inclined cutter blade 20 and the front cutter blade 10 are provided adjacent to each other and thus, when the inclined cutter blade 20 is damaged, the front cutter blade 10 is also damaged. For this reason, the attachment and detachment of the cutter blade can be achieved in one replacement operation, improving the workability of replacement.
  • the front edge of the rotor described in the conventional example is not formed linearly and thus, the cutter blades attached to the front edge of the rotor are the pair of first cutter blades.
  • the front edge AB is formed linearly in a plan view
  • the front cutter blade 10 is also formed linearly in a plan view, both of the front edge AB of the vane of the rotor 5 and the front cutter blade 10 can be easily worked.
  • numeral 30 refers to a flat surface, and the inclined cutter blade 20 and the front cutter blade 10 are connected to each other via the flat surface 30 .
  • the flat surface 30 is higher than a lowermost surface of the inclined cutter blade 20 and a lowermost surface of the from cutter blade 10 .
  • the flat surface 30 contacts with the back surface of the rotor 5 (more specifically, the back surface of the rotary vane of the rotor 5 ).
  • the integrated inclined cutter blade 20 and front cutter blade 10 are attached by screwing bolts 40 into female screws 30 a of the flat surface 30 through through holes 5 a provided in the rotary vane of the rotor 5 .
  • the inclined cutter blade 20 and the front cutter blade 10 are integrally formed via the inner portion 20 A of the inclined cutter blade 20 (see FIGS. 5 and 6 ), and the inclined cutter blade 20 and the front cutter blade 10 are connected to each other via the flat surface 30 .
  • the present invention is not limited to this, although not shown, the inner portion 20 A of the inclined cutter blade 20 may be separated from the front cutter blade 10 , and the inclined cutter blade 20 and the front cutter blade 10 may be integrally connected to each other via only the flat surface 30 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
US13/847,233 2012-06-26 2013-03-19 Pulper Abandoned US20130341445A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-142621 2012-06-26
JP2012142621A JP2014005570A (ja) 2012-06-26 2012-06-26 パルパー

Publications (1)

Publication Number Publication Date
US20130341445A1 true US20130341445A1 (en) 2013-12-26

Family

ID=47913067

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/847,233 Abandoned US20130341445A1 (en) 2012-06-26 2013-03-19 Pulper

Country Status (7)

Country Link
US (1) US20130341445A1 (ko)
EP (1) EP2679720A1 (ko)
JP (1) JP2014005570A (ko)
KR (1) KR20140003996A (ko)
CN (1) CN103510416A (ko)
CA (1) CA2811619A1 (ko)
TW (1) TW201400256A (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160040357A1 (en) * 2014-08-06 2016-02-11 Aikawa Iron Works Co., Ltd. Papermaking strainer, foreign material separation apparatus for papermaking, and manufacturing method of papermaking strainer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104060489A (zh) * 2014-06-20 2014-09-24 范昕昀 一种超声波纸浆机
JP6945449B2 (ja) * 2015-07-14 2021-10-06 ローター工業株式会社 パルパーおよびパルパーロータの刃部構造
CN110090846A (zh) * 2019-03-18 2019-08-06 温州天炽包装有限公司 一种包装箱用瓦楞纸板回收装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5028672B2 (ja) 2007-05-23 2012-09-19 ボイス パテント ゲーエムベーハー 古紙裁断用ロータ
JP3152335U (ja) * 2009-04-16 2009-07-30 フォイト パテント ゲゼルシャフト ミット ベシュレンクテル ハフツングＶＯＩＴＨ ＰＡＴＥＮＴ ＧｍｂＨ 古紙溶解装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160040357A1 (en) * 2014-08-06 2016-02-11 Aikawa Iron Works Co., Ltd. Papermaking strainer, foreign material separation apparatus for papermaking, and manufacturing method of papermaking strainer

Also Published As

Publication number Publication date
KR20140003996A (ko) 2014-01-10
CA2811619A1 (en) 2013-12-26
CN103510416A (zh) 2014-01-15
EP2679720A1 (en) 2014-01-01
JP2014005570A (ja) 2014-01-16
TW201400256A (zh) 2014-01-01

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Legal Events

Date Code Title Description
AS Assignment

Owner name: AIKAWA IRON WORKS CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AIKAWA, MASAKI;REEL/FRAME:030167/0626

Effective date: 20130304

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION