EP0049450A2 - Mélangeur pour des matières en vrac, spécialement pour des suspensions fibreuses - Google Patents

Mélangeur pour des matières en vrac, spécialement pour des suspensions fibreuses Download PDF

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Publication number
EP0049450A2
EP0049450A2 EP81107682A EP81107682A EP0049450A2 EP 0049450 A2 EP0049450 A2 EP 0049450A2 EP 81107682 A EP81107682 A EP 81107682A EP 81107682 A EP81107682 A EP 81107682A EP 0049450 A2 EP0049450 A2 EP 0049450A2
Authority
EP
European Patent Office
Prior art keywords
grinding
stators
mixer according
shaft
container
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
EP81107682A
Other languages
German (de)
English (en)
Other versions
EP0049450B1 (fr
EP0049450A3 (en
Inventor
Eberhard Ing.-Grad. Lipp
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.)
Draiswerke GmbH
Original Assignee
Draiswerke GmbH
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 Draiswerke GmbH filed Critical Draiswerke GmbH
Publication of EP0049450A2 publication Critical patent/EP0049450A2/fr
Publication of EP0049450A3 publication Critical patent/EP0049450A3/de
Application granted granted Critical
Publication of EP0049450B1 publication Critical patent/EP0049450B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B01F27/707—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms the paddles co-operating, e.g. intermeshing, with elements on the receptacle wall
    • 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
    • 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
    • D21B1/342—Mixing apparatus

Definitions

  • the invention relates to a mixer for bulk material, in particular for fibrous suspensions such as cellulose derivatives, in the form of a horizontally arranged, drum-shaped or trough-shaped container with a drivable blade mechanism which has mixing blades arranged radially on a shaft running through the container in the longitudinal direction.
  • Such devices for drying, reacting and mixing bulk goods which have a drum-shaped container with a horizontal longitudinal axis, in which a drivable shaft is mounted centrally, which carries mixing tools on radially arranged arms.
  • Such devices are not able to crush hard, tough or fibrous agglomerates or granules that are present in the starting product or that arise during drying, reaction or mixing.
  • Such agglomerates lead to longer drying times, reaction times and inhomogeneous end products.
  • the object of the invention is now to provide a robust mixing device for the heat treatment of bulk goods, which avoids the aforementioned disadvantages, especially instead of crushing by impact, which is made possible by cleaning and cutting and makes additional drive units unnecessary.
  • the grinding rings enable the setting of a grinding gap and thus a forced reduction, whereby by specifying the grinding gap, a homogeneous grain distribution takes place and a grinding process that follows the process can be omitted.
  • the grinding rings can be arranged on spoke wheels. However, if the grinding rings are arranged on non-perforated disks, this promotes the mixing process, because the disks move the bulk material increasingly in the axial direction.
  • the panes can advantageously be heated, which can shorten drying times.
  • the grinding stators preferably consist of cylinder surfaces which are adjustably arranged in the container housing or of strips arranged on covered cylinder surfaces; Grinding stators broken through in this way have the advantage of being permeable to the material to be mixed, which favors the success of the mixing.
  • the grinding rings appropriately have exchangeable grinding segments on the circumference. Since the holders of the grinding stators only in their axial direction, i.e. can be moved in the radial direction with respect to the shaft of the mixer, they can be made simple and robust and a lateral kinking can thus be excluded.
  • the appropriate number of pairs of grinding tools formed from a grinding ring and a grinding stator depends on the length of the mixer Dwell time and the properties of the bulk material. According to the invention, at least one such pair is provided, but preferably several, but generally not more than one such pair between two adjacent mixing blades.
  • moist, fibrous, pulpy bulk goods and suspensions can be dried, reacted, but also heated, cooled or mixed under negative pressure, normal pressure or positive pressure.
  • the material to be treated is constantly mixed by means of the tools, loosened and fed to the grinding tools, which shred the material in the grinding gap formed by it.
  • the grinding rings are preferably bevelled on both sides, the inclined surfaces facing the grinding stator, as a result of which they impart a movement component to the bulk material in the direction of the grinding stator. Provisions are made to draw off the moisture released from the material and to be able to supply reactants.
  • the mixer shown for bulk material in particular for fibrous suspensions 1, consists of a drum-shaped container 1 with mixing blades 3, which can be driven by a shaft 2 passing through, with holding arms 4, which are evenly distributed over the shaft 2 at a distance and in an angular position. Between some of these mixing blades 3, additional grinding rings 5 are attached centrally on the rotating shaft 2 at an angle to their longitudinal axis, which wobble when rotating.
  • the optimum degree of filling of the container 1 with the mixture 6 is about 70%.
  • the grinding rings 5 interact on their peripheral surface with staiffy counter surfaces of a grinding stator 8, both surfaces preferably being profiled to form cutting and rubbing edges.
  • the counter surfaces consist of cylinder partial surfaces which are adjustably arranged on the container housing 1, while the peripheral surface of the grinding rings 5 is formed from interchangeable grinding segments 7.
  • the counter surfaces of the grinding stator 8 are arranged on supports 9 which can be adjusted from the outside and are oriented radially on the shaft 2 in the container 1 in such a way that mixing blades 3 can pass underneath on one or both sides, as can be seen from FIG becomes.
  • the adjustable supports 9 for the counter surfaces are sealed by means of bellows 10.
  • the counter surfaces of the grinding stator 8 are arranged in the lower region of the container housing 1, preferably on the part which rises in the direction of rotation D of the shaft 2 and make up approximately 10-50%, preferably 25%, of the circumference of the housing 1 covered by the mixing blades 3 .
  • the effective width of the grinding rings 5 corresponds approximately to the axial extent of a mixing blade 3.
  • the counter surfaces of the grinding stators 8 are, as can be seen from FIGS. 1 and 2, under the action of springs 11.
  • the adjustable supports 9 of the grinding stators 8 can be designed as spring pistons be, the spring pistons are preferably formed by so-called constant spring supports, as is not particularly shown here, so that a constant pressure is achieved.
  • the sockets 12, 13 on the housing 1 are used for filling and emptying.
  • They consist of a supporting structure which consists of circular ribs 14 and cutting strips 15 connecting these ribs 14.
  • the cutting strips 15 are provided on their side facing the grinding ring 5 with a profiled surface and lie parallel to one another on one support 9 to be fastened to the housing of the container 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Crushing And Grinding (AREA)
EP81107682A 1980-10-02 1981-09-28 Mélangeur pour des matières en vrac, spécialement pour des suspensions fibreuses Expired EP0049450B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3037332A DE3037332C2 (de) 1980-10-02 1980-10-02 Mischer für Schüttgut und Suspensionen, insbesondere faserige Suspensionen
DE3037332 1980-10-02

Publications (3)

Publication Number Publication Date
EP0049450A2 true EP0049450A2 (fr) 1982-04-14
EP0049450A3 EP0049450A3 (en) 1983-04-20
EP0049450B1 EP0049450B1 (fr) 1985-04-03

Family

ID=6113479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81107682A Expired EP0049450B1 (fr) 1980-10-02 1981-09-28 Mélangeur pour des matières en vrac, spécialement pour des suspensions fibreuses

Country Status (5)

Country Link
US (1) US4413790A (fr)
EP (1) EP0049450B1 (fr)
JP (1) JPS5791728A (fr)
DE (2) DE3037332C2 (fr)
ES (1) ES505955A0 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848919A (en) * 1985-04-27 1989-07-18 Draiswerke Gmbh Pinned mill for mixers

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3210912A1 (de) * 1980-10-02 1983-09-29 Draiswerke Gmbh, 6800 Mannheim Mischer fuer schuettgut
DE3538070A1 (de) * 1985-10-25 1987-04-30 Krauss Maffei Ag Misch- und knetvorrichtung
DE3728710C2 (de) * 1987-08-28 1997-08-21 Loedige Maschbau Gmbh Geb Mischer zum Mischen von Feststoffschüttungen
AU652630B2 (en) * 1991-05-17 1994-09-01 Daiwa Can Company Limited Steel strip for three-piece can body, production process thereof and resistance seam welded three-piece can body
DE4124984C2 (de) * 1991-07-27 1995-04-27 Babcock Bsh Ag Verwendung einer Misch-, Granulier- und Trocknungsvorrichtung
CA2445074A1 (fr) * 2001-04-25 2002-11-14 List Ag Barres melangeuses a effet nettoyant dans le sens radial ou axial

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US221371A (en) * 1879-11-04 Improvement in grinding-mills
GB191316768A (en) * 1913-07-22 1914-07-02 William Worby Beaumont Improvements in Machines for Preparing Paper Pulp.
US1302398A (en) * 1918-05-13 1919-04-29 Bert V Barber Letter-opener.
GB166094A (en) * 1920-07-09 1921-06-30 Leon Gabriel Antonin Potie Improvements in a disintegrator for making paper
US1953733A (en) * 1931-11-30 1934-04-03 Baker Perkins Co Inc Mixing, kneading, and shredding blade
US2492421A (en) * 1945-03-31 1949-12-27 American Viscose Corp Viscose preparation
DE868844C (de) * 1949-01-01 1956-07-05 Werner Reisten Muehle fuer die fortlaufende Mahlung von Faserstoffen wie Papierstoff, Zellstoff, Holzfaserstoff u. dgl.
FR1058662A (fr) * 1951-06-25 1954-03-18 Glanzstoff Ag Défibreur à compartiments
DE1020002B (de) * 1953-09-25 1957-11-28 Wilhelm Loedige Mischmaschinen mit in einem Behaelter auf einer Welle wendelfoermig verteilten Misch- und Schleuder-Elementen
US3027102A (en) * 1957-12-20 1962-03-27 Lodige Wilhelm Apparatus for mixing and comminuting
DE1102534B (de) * 1957-12-20 1961-03-16 Fritz Loedige Vorrichtung zum Mischen, Zerkleinern und gegebenenfalls Anfeuchten von pulverfoermigen, feinkoernigen oder faserigen Stoffen
GB976372A (en) * 1959-12-29 1964-11-25 Neidl Georg Fibrous material and method and apparatus for its production
DE1782585C3 (de) * 1968-09-20 1982-04-15 Draiswerke Gmbh, 6800 Mannheim Mischmaschine
CH566167A5 (fr) * 1973-09-28 1975-09-15 Bicik Vladislav
DE2646512C2 (de) * 1976-10-15 1987-04-16 Fritz Lödige Vorrichtung zur chargenweisen Trocknung von Schüttgut

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848919A (en) * 1985-04-27 1989-07-18 Draiswerke Gmbh Pinned mill for mixers

Also Published As

Publication number Publication date
EP0049450B1 (fr) 1985-04-03
ES8207437A1 (es) 1982-10-01
JPS5791728A (en) 1982-06-08
ES505955A0 (es) 1982-10-01
US4413790A (en) 1983-11-08
DE3169701D1 (en) 1985-05-09
JPH0140648B2 (fr) 1989-08-30
EP0049450A3 (en) 1983-04-20
DE3037332A1 (de) 1982-04-15
DE3037332C2 (de) 1983-09-08

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