EP0328500A2 - Dispositif pour la désintégration du papier, du carton ou de matières semblables - Google Patents
Dispositif pour la désintégration du papier, du carton ou de matières semblables Download PDFInfo
- Publication number
- EP0328500A2 EP0328500A2 EP89850030A EP89850030A EP0328500A2 EP 0328500 A2 EP0328500 A2 EP 0328500A2 EP 89850030 A EP89850030 A EP 89850030A EP 89850030 A EP89850030 A EP 89850030A EP 0328500 A2 EP0328500 A2 EP 0328500A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- blades
- disintegrating
- tub
- pumping
- 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
Links
Images
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
- 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
Definitions
- This invention is related to a device to disintegrate paper, cardboard and similar materials, which device consists of a tub into which the material to be disintegrated is fed and from which it is removed in the disintegrated state, and of at least one rotating rotor with several blades, situated on one of the walls of the tub.
- pulpers used for disintegrating the web have been developed by that the installed motor power has been increased so that the paper or any similar material could be disintegrated quickly enough into a form in which it can be pumped.
- Pulpers are also used for disintegrating bale pulp, broke rolls and similar solid materials. In that case the disintegrating organ of the pulper, the rotor, is situated at the bottom of the tub.
- the object of this invention is to achieve a new rotor that can be used both in horizontal and in vertical pulpers, and of which rotors there can be one or more in the same tub.
- a device according to the invention is characterized by that at least one of the blades is a pumping blade and at least one a disintegrating blade.
- An advantageous embodiment of a device according to the invention is characterized by that there are equally many pumping blades and disintegrating blades, and that they have been arranged in the rotor's direction of rotation alternately.
- Another advantageous embodiment of a device according to the invention is characterized by that the three pumping blades of a six-bladed rotor extend from the periphery of the rotor to the centre of the rotor, forming a solid pumping blade unit, and that the disintegrating blades formed between these pumping blades have disintegrating teeth for mechanical tearing that extend from the periphery of the rotor only to the edge of the rotor's body.
- Still another advantageous embodiment of a device according to the invention is characterized by that the disintegrating teeth have been installed in such a manner that they are replaceable.
- Essential in a rotor according to the invention is that it combines mechanical disintegration with a powerful acceleration of stock, which increases hydraulic disintegration, i.e. strengthens the cutting forces in the liquid.
- the pumping blades cause the hydraulic forces of disintegration and the replaceable disintegrating teeth of the disintegrating blades carry out the mechanical disintegration work.
- the disintegration time and the disintegration consistency can be selected to suit the production in question.
- the installed power of pulpers of prior art with current paper machines is from 1,000 kW to 1,500 kW, which means that yearly savings from Fmk 850,000 to Fmk 1,300,000 in operating costs are obtained if the price of electric energy is 20 p/kWh.
- the reliability of operation is improved considerably, since variations of production do not cause motor stoppages due to overloading.
- Figure 1 shows a known pulper (Finnish patent No. 72356), i.e. a device to disintegrate paper, cardboard and the like.
- the device can be placed for instance under a big paper machine, in which case the feeding into the tub 1 of the material to be disintegrated happens through the open top of the tub.
- the disintegration of the paper or cardboard in the tub 1 is carried out with rotating rotors 3.
- the number of rotors is two, and they are situated on the same wall of the tub.
- the driving motors 4 of the rotors are situated outside the tub, coaxially with the rotors.
- the rotors in this known device are conventional ones, i.e. they have numerous tearing blades of essentially the same kind.
- Figure 2 shows a six-bladed rotor 3 according to the invention, such as can be used both in horizontal and in vertical pulpers; and there can be one or more of them in the same tub.
- the three pumping blades 2 of the six-bladed rotor 3 extend from the periphery of the rotor 3 to the centre of the rotor, forming a solid pumping blade unit 8. Between these pumping blades have been formed disintegrating blades 5 that have been equipped with disintegrating teeth 6 for tearing that extend from the periphery of the rotor only to the edge of the body of the rotor 3.
- Figure 3 shows the teeth 6, which can be in one piece that is fastened replaceably on the disintegrating blade 5 by inserting bolts or similar elements through the holes 7.
- the tooth piece is curved in the way shown in Figure 4.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Crushing And Pulverization Processes (AREA)
- Sorting Of Articles (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Fats And Perfumes (AREA)
- Compounds Of Unknown Constitution (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
- Crushing And Grinding (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI880609A FI78934C (fi) | 1988-02-10 | 1988-02-10 | Anordning foer destruktion av papper, kartong eller dylika. |
FI880609 | 1988-02-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0328500A2 true EP0328500A2 (fr) | 1989-08-16 |
EP0328500A3 EP0328500A3 (fr) | 1991-06-05 |
EP0328500B1 EP0328500B1 (fr) | 1994-08-03 |
Family
ID=8525883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89850030A Expired - Lifetime EP0328500B1 (fr) | 1988-02-10 | 1989-02-02 | Dispositif pour la désintégration du papier, du carton ou de matières semblables |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0328500B1 (fr) |
AT (1) | ATE109528T1 (fr) |
DE (1) | DE68917168T2 (fr) |
FI (1) | FI78934C (fr) |
NO (1) | NO174011C (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1010118A3 (fr) * | 1996-04-05 | 1998-01-06 | Magotteaux Int | Helice de malaxeur. |
WO1998017393A1 (fr) * | 1996-10-22 | 1998-04-30 | Jeffrey Robert Wood | Appareil de reduction en pate |
EP1036877A1 (fr) * | 1999-03-05 | 2000-09-20 | Voith Sulzer Papiertechnik Patent GmbH | Rotor avec protecteur anti-usure pour un pulpeur |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3707267A (en) * | 1971-02-24 | 1972-12-26 | Beloit Corp | Replaceable vane insert for impeller |
US3889885A (en) * | 1974-01-11 | 1975-06-17 | Black Clawson Co | Pulping apparatus |
US4109872A (en) * | 1977-07-29 | 1978-08-29 | The Black Clawson Company | Pulping apparatus for liquid slurry stock |
NL7712833A (en) * | 1977-11-03 | 1979-05-07 | Eximco Naamloze Vennootschap | Rotor with vane cutting edges clad with sharp carbide granules - esp. for grinding and opening waste paper to form fibrous slurry for mfg. paper or board |
-
1988
- 1988-02-10 FI FI880609A patent/FI78934C/fi active IP Right Grant
-
1989
- 1989-02-02 DE DE68917168T patent/DE68917168T2/de not_active Expired - Lifetime
- 1989-02-02 EP EP89850030A patent/EP0328500B1/fr not_active Expired - Lifetime
- 1989-02-02 AT AT89850030T patent/ATE109528T1/de not_active IP Right Cessation
- 1989-02-09 NO NO890560A patent/NO174011C/no unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3707267A (en) * | 1971-02-24 | 1972-12-26 | Beloit Corp | Replaceable vane insert for impeller |
US3889885A (en) * | 1974-01-11 | 1975-06-17 | Black Clawson Co | Pulping apparatus |
US4109872A (en) * | 1977-07-29 | 1978-08-29 | The Black Clawson Company | Pulping apparatus for liquid slurry stock |
NL7712833A (en) * | 1977-11-03 | 1979-05-07 | Eximco Naamloze Vennootschap | Rotor with vane cutting edges clad with sharp carbide granules - esp. for grinding and opening waste paper to form fibrous slurry for mfg. paper or board |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1010118A3 (fr) * | 1996-04-05 | 1998-01-06 | Magotteaux Int | Helice de malaxeur. |
WO1998017393A1 (fr) * | 1996-10-22 | 1998-04-30 | Jeffrey Robert Wood | Appareil de reduction en pate |
EP1036877A1 (fr) * | 1999-03-05 | 2000-09-20 | Voith Sulzer Papiertechnik Patent GmbH | Rotor avec protecteur anti-usure pour un pulpeur |
Also Published As
Publication number | Publication date |
---|---|
DE68917168T2 (de) | 1994-11-24 |
FI78934B (fi) | 1989-06-30 |
FI880609A0 (fi) | 1988-02-10 |
NO174011B (no) | 1993-11-22 |
EP0328500B1 (fr) | 1994-08-03 |
EP0328500A3 (fr) | 1991-06-05 |
ATE109528T1 (de) | 1994-08-15 |
FI78934C (fi) | 1989-10-10 |
NO890560D0 (no) | 1989-02-09 |
NO890560L (no) | 1989-08-11 |
NO174011C (no) | 1994-03-02 |
DE68917168D1 (de) | 1994-09-08 |
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