EP0049450B1 - Mixer for bulk goods, especially for fibrous suspensions - Google Patents

Mixer for bulk goods, especially for fibrous suspensions Download PDF

Info

Publication number
EP0049450B1
EP0049450B1 EP81107682A EP81107682A EP0049450B1 EP 0049450 B1 EP0049450 B1 EP 0049450B1 EP 81107682 A EP81107682 A EP 81107682A EP 81107682 A EP81107682 A EP 81107682A EP 0049450 B1 EP0049450 B1 EP 0049450B1
Authority
EP
European Patent Office
Prior art keywords
container
mixer according
cylinder element
grinding wheel
comminuting
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.)
Expired
Application number
EP81107682A
Other languages
German (de)
French (fr)
Other versions
EP0049450A2 (en
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/en
Publication of EP0049450A3 publication Critical patent/EP0049450A3/en
Application granted granted Critical
Publication of EP0049450B1 publication Critical patent/EP0049450B1/en
Expired legal-status Critical Current

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
    • 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
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/342—Mixing apparatus

Definitions

  • the invention relates to a mixer according to the preamble of claim 1.
  • friction plates extending in the circumferential direction are attached to the inner wall of the container as comminution elements, each of which forms a counter surface to the circumferentially drivable mixer blades, thus together with these form a comminution device, the each mixing blade also has the function of a comminuting element.
  • the friction plates can also be perforated and / or roughened like sieve plates. The purpose of these crushing devices is to immediately break up agglomerates that form during a treatment process. The effect of these shredding devices is unsatisfactory.
  • cutter heads which can be driven at high speed and which are provided in the region of the container wall and whose axis of rotation extends approximately radially to the container as a comminution device in mixers of the otherwise generic type. They are arranged so that they are arranged radially inside the mixing blades and partially overlap them axially.
  • a swash plate pump with a cylindrical housing and a shaft arranged coaxially therein is known.
  • a swashplate is attached, that is, a disk that performs a wobble movement during rotation, which sucks in a medium to be pumped during its circulation through an intake port arranged at the end and in the center and conveys it through a tangentially arranged pressure port.
  • the swash plate can be designed in a serrated or saw-like manner on its outer circumference. This form can be adapted to housing enclosures arranged on the housing, whereby this pump also has grinding properties.
  • a machine for producing a paper mash which has comminution devices in the conveying part, which consist of friction surfaces attached to the container and associated cylinder section surfaces with friction devices.
  • the invention has for its object to design a mixer of the generic type so that a highly effective and gentle comminution can be carried out while achieving a homogeneous particle size distribution of the material to be treated, without risk of damage to the comminuting elements.
  • a grinding gap is formed between the grinding disks and the cylinder parts, so that forced comminution takes place.
  • the arrangement of the cylinder parts enables the cylinder parts to be arranged so as to be radially adjustable, so that the width of the grinding gap is adjustable. This enables a very homogeneous grain distribution to be achieved, which means that a grinding process that follows the process can be omitted.
  • the mixer according to the invention bulk goods, moist, fibrous and pulpy goods and suspensions can be dried, heated, cooled or mixed or subjected to a reaction under negative pressure, normal pressure or positive pressure.
  • the material to be treated is constantly mixed by means of the mixing blades, loosened and fed to the grinding disks, where it is then crushed in the grinding gap.
  • the mixer shown in the drawing has a drum-like 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 with respect to distance and angular position. Between these mixing blades 3, grinding disks 5 are additionally arranged at an angle to the longitudinal direction on the rotating shaft 2, which wobbles when rotated perform movement.
  • the number of grinding disks 5 is at least "one” and at most the number of mixing blades 3 reduced by "one”.
  • the optimum degree of filling of the container 1 with bulk material 6 or fibrous suspension is approximately 70%.
  • the peripheral surface is formed on interchangeable grinding segments 7, while the counter surfaces are formed by the inner surfaces 8 of cylinder parts that can be adjusted relative to the container 1.
  • the cylinder parts are arranged on supports 9 that can be adjusted from the outside in the container 1 in such a way that mixing blades 3 can pass through them on one or both sides , as can be seen from Fig. 1.
  • the adjustable supports 9 for the cylinder parts are sealed by means of bellows 10.
  • the cylinder parts are arranged in the lower region of the container 1 on the part rising in the direction of rotation D of the shaft 2 and cover approximately 10-50%, preferably 25%, of the circumference of the container 1 covered by the mixing blades 3.
  • the effective width b of the grinding disks 5 corresponds approximately to the axial extent of a mixing blade 3.
  • the cylinder parts are, as can be seen from the drawing, under the action of a spring 11.
  • the adjustable supports 9 of the cylinder parts can be designed as spring pistons, the spring pistons are preferably formed by so-called constant spring supports, which are not particularly shown here, so that a constant pressure is achieved.
  • Stubs 12, 13 are used for filling and emptying the container 1. Provisions have been made in order to be able to draw off the moisture given off by the material to be treated and to be able to supply reactants.

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)

Description

Die Erfindung betrifft einen Mischer nach dem Oberbegriff des Patentanspruches 1.The invention relates to a mixer according to the preamble of claim 1.

Bei einem derartigen aus der DE-C-10 20 002 bekannten Mischer sind an der Innenwand des Behälters sich in Umfangsrichtung erstreckende Reibbleche als Zerkleinerungselemente angebracht, die jeweils eine Gegenfläche zu den umlaufend antreibbaren Mischerschaufeln bilden, mit diesen zusammen also eine Zerkleinerungseinrichtung bilden, wobei der jeweiligen Mischschaufel auch die Funktion eines Zerkleinerungselementes zukommt. Die Reibbleche können auch wie Siebplatten durchlöchert und/ oder aufgerauht ausgebildet sein. Der Zweck dieser Zerkleinerungseinrichtungen liegt darin, sich während eines Behandlungsvorganges bildende Agglomerate sofort zu zerteilen. Die Wirkung dieser Zerkleinerungseinrichtungen ist nicht befriedigend.In such a mixer known from DE-C-10 20 002, friction plates extending in the circumferential direction are attached to the inner wall of the container as comminution elements, each of which forms a counter surface to the circumferentially drivable mixer blades, thus together with these form a comminution device, the each mixing blade also has the function of a comminuting element. The friction plates can also be perforated and / or roughened like sieve plates. The purpose of these crushing devices is to immediately break up agglomerates that form during a treatment process. The effect of these shredding devices is unsatisfactory.

Aus der DE-B-11 02534 ist es bekannt, als Zerkleinerungseinrichtung bei Mischern der ansonsten gattungsgemäßen Art hochtourig antreibbare Messerköpfe einzusetzen, die im Bereich der Behälterwand vorgesehen sind und deren Drehachse etwa radial zum Behälter verläuft. Sie sind so angeordnet, daß sie radial innerhalb der Mischschaufeln angeordnet sind und diese axial teilweise überdecken.From DE-B-11 02534 it is known to use cutter heads which can be driven at high speed and which are provided in the region of the container wall and whose axis of rotation extends approximately radially to the container as a comminution device in mixers of the otherwise generic type. They are arranged so that they are arranged radially inside the mixing blades and partially overlap them axially.

Aus dem Artikel von Dürr "Feindispergieren Fest-Flüssig Maschinen und Methoden in der modernen Betriebspraxis", in der Zeitschrift "Aufbereitungs-Technik", Heft 6, 1971 ist es auch bekannt geworden, anstelle solcher Messerköpfe Stiftscheibenmühlen in gleicher Art der Anordnung wie die Messerköpfe vorzusehen.It has also become known from Dürr's article "Feindispergieren Solid-Liquid Machines and Methods in Modern Business Practice", in the journal "Aufaufungs-Technik", Issue 6, 1971, that instead of such cutter heads, pin disc mills have the same arrangement as the cutter heads to provide.

Schließlich ist es aus der DE-B-17 82 585 bekannt geworden, ein drehantreibbares Homogenisierwerkzeug, dessen Drehachse raidal zum Mischer angeordnet ist, an dessen Behälterwand vorzusehen, wobei das Homogenisierwerkzeug derart zu den Mischschaufeln angeordnet wird, daß es relativ zu den Mischwerkzeugen einen Scherspalt begrenzt.Finally, it has become known from DE-B-17 82 585 to provide a rotationally drivable homogenizing tool, the axis of rotation of which is arranged at right angles to the mixer, on its container wall, the homogenizing tool being arranged in relation to the mixing blades in such a way that it has a shear gap relative to the mixing tools limited.

Alle vorstehend angegebenen drehantreibbaren Zerkleinerungselemente weisen den Nachteil auf, daß aufwendige Abdichtungen im Bereich ihrer Hindurchführung durch die Wand des Behälters notwendig sind. Weiterhin besteht die Gefahr eines Abknickens ihrer fliegend gelagerten Wellen. Wenn in den Mischern Güter getrocknet werden, dann bilden sich oberflächlich angetrocknete, im Kern aber noch plastische Agglomerate, die beim Aufprall auf die hochtourig angetriebenen Zerkleinerungselemente verdichtet werden. Hierdurch wird der Diffusionswiderstand erhöht, die Trocknung verschlechtert und ggf. sogar das Endprodukt beschädigt. Durch die Art der Agglomeratzerteilung wird eine sehr heterogene Kornverteilung erreicht, so daß noch ein nachgeschalteter Mahlprozeß notwendig ist.All of the above-mentioned rotationally drivable comminution elements have the disadvantage that complex seals are necessary in the area of their passage through the wall of the container. There is also a risk of their overhung shafts kinking. When goods are dried in the mixers, surface agglomerates that have dried on the surface, but are still plastic at the core, are formed, which are compressed when they collide with the high-speed comminution elements. This increases the diffusion resistance, the drying deteriorates and possibly even damages the end product. The type of agglomerate division results in a very heterogeneous particle size distribution, so that a subsequent grinding process is still necessary.

Aus der Zeitschrift "Chemiker-Zeitung", 94. Jahrgang (1970) Nr. 4, Seite 123 ist eine Schrägscheibenpumpe mit zylindrischem Gehäuse und koaxial in diesem angeordneter Welle bekannt. Auf der Welle ist eine Schrägscheibe, also eine während des Drehens eine Taumelbewegung ausführende Scheibe angebracht, die während ihres Umlaufes ein zu pumpendes Medium durch einen stirnseitig und mittig angeordneten Ansaugstutzen ansaugt und durch einen tangential angeordneten Druckstutzen abfördert. Die Schrägscheibe kann an ihrem Außenumfang zacken- oder sägenartig gestaltet sein. Dieser Form können am Gehäuseumfang angeordnete Gehäuseeinschübe angepaßt sein, wodurch diese Pumpe gleichzeitig Mahleigenschaften bekommt.From the magazine "Chemiker-Zeitung", 94th year (1970) No. 4, page 123, a swash plate pump with a cylindrical housing and a shaft arranged coaxially therein is known. On the shaft, a swashplate is attached, that is, a disk that performs a wobble movement during rotation, which sucks in a medium to be pumped during its circulation through an intake port arranged at the end and in the center and conveys it through a tangentially arranged pressure port. The swash plate can be designed in a serrated or saw-like manner on its outer circumference. This form can be adapted to housing enclosures arranged on the housing, whereby this pump also has grinding properties.

Aus der GB-A-16 768 ist eine Maschine zum Herstellen einer Papiermaische bekennt, die im Förderteil Zerkleinerungseinrichtungen aufweist, die aus am Behälter angebrachten Reibflächen und zugeordneten Zylinderabschnittsflächen mit Reibeinrichtungen bestehen.From GB-A-16 768 a machine for producing a paper mash is known which has comminution devices in the conveying part, which consist of friction surfaces attached to the container and associated cylinder section surfaces with friction devices.

Der Erfindung liegt die Aufgabe zugrunde, einen Mischer der gattungsgemäßen Art so auszugestalten, daß eine hochwirksame und schonende Zerkleinerung unter Erreichung einer homogenen Kornverteilung des zu behandelnden Gutes durchführbar ist, ohen daß eine Beschädigungsgefahr für die Zerkleinerungselemente besteht.The invention has for its object to design a mixer of the generic type so that a highly effective and gentle comminution can be carried out while achieving a homogeneous particle size distribution of the material to be treated, without risk of damage to the comminuting elements.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des kennzeichnenden Teiles des Patentanspruches 1 gelöst. Zwischen den Mahlscheiben und den Zylinderteilen wird ein Mahlspalt gebildet, so daß eine Zwangszerkleinerung stattfindet. Die Anordnung der Zylinderteile ermöglicht die Zylinderteile radial verstellbar anzuordnen, so daß also die Breite des Mahlspaltes verstellbar ist. Dadurch kann eine sehr homogene Kornverteilung erreicht werden, wodurch ein dem Prozeß nachzuschaltender Mahlvorgang entfallen kann. Mit dem erfindungsgemäßen Mischer können Schüttgüter, feuchte, faserige und breiige Güter und Suspensionen unter Unterdruck, Normaldruck oder Überdruck kontinuierlich oder diskontinuierlich getrocknet, beheizt, gekühlt oder gemischt werden oder einer Reaktion unterzogen werden.This object is achieved by the features of the characterizing part of claim 1. A grinding gap is formed between the grinding disks and the cylinder parts, so that forced comminution takes place. The arrangement of the cylinder parts enables the cylinder parts to be arranged so as to be radially adjustable, so that the width of the grinding gap is adjustable. This enables a very homogeneous grain distribution to be achieved, which means that a grinding process that follows the process can be omitted. With the mixer according to the invention, bulk goods, moist, fibrous and pulpy goods and suspensions can be dried, heated, cooled or mixed or subjected to a reaction under negative pressure, normal pressure or positive pressure.

Das zu behandelnde Gut wird mittels der Mischschaufeln ständig durchmischt, aufgelockert und den Mahlscheiben zugeführt, wo es dann im Mahlspalt zerkleinert wird.The material to be treated is constantly mixed by means of the mixing blades, loosened and fed to the grinding disks, where it is then crushed in the grinding gap.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert. Es zeigt:

  • Fig. 1 einen Längsschnitt durch einen erfindungsgemäßen Mischer und
  • Fig. 2 einen Querschnitt durch den Mischer gemäß der Schnittlinie 11-11 in Fig. 1.
An exemplary embodiment of the invention is explained in more detail below with reference to the drawing. It shows:
  • Fig. 1 shows a longitudinal section through a mixer according to the invention and
  • 2 shows a cross section through the mixer according to section line 11-11 in FIG. 1st

Der in der Zeichnung dargestellte Mischer weist einen trommelartigen Behälter 1 mit über eine durchlaufende Welle 2 antreibbaren Mischschaufeln 3 mit Haltearmen 4 auf, welche über die Welle 2 hinsichtlich Abstand und Winkelstellung gleichmäßig verteilt sind. Zwischen diesen Mischschaufeln 3 sind zusätzlich Mahlscheiben 5 schräg zur Längsrichtung an der rotierenden Welle 2 angeordnet, welche bei Drehung eine Taumelbewegung ausführen. Die Anzahl der Mahlscheiben 5 beträgt mindestens "eins" und höchstens die um "eins" verminderte Zahl der Mischschaufeln 3. Der optimale Füllgrad des Behälters 1 mit Schüttgut 6 oder fasriger Suspension liegt bei etwa 70%.The mixer shown in the drawing has a drum-like 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 with respect to distance and angular position. Between these mixing blades 3, grinding disks 5 are additionally arranged at an angle to the longitudinal direction on the rotating shaft 2, which wobbles when rotated perform movement. The number of grinding disks 5 is at least "one" and at most the number of mixing blades 3 reduced by "one". The optimum degree of filling of the container 1 with bulk material 6 or fibrous suspension is approximately 70%.

Die Mahlscheiben 5, welche bei Drehung eine Taumelbewegung ausführen, wirken an ihrer Umfangsfläche mit stationären Gegegenflächen zusammen, die beide profiliert sind. Die Umfangsfläche ist an austauschbaren Mahlsegmenten 7 ausgebildet, während die Gegenflächen durch die Innenflächen 8 von gegenüber dem Behälter 1 einstellbaren Zylinderteilen gebildet sind Die Zylinderteile sind auf von außen nachstellbaren Stützen 9 so im Behälter 1 angeordnet, daß ein- oder beidseitig Mischschaufeln 3 darunter durchfahren können, wie dies aus Fig. 1 ersichtlich ist. Die nachstellbaren Stützen 9 für die Zylinderteile sind mittels Faltenbalg 10 abgedichtet. Die Zylinderteile sind im unteren Bereich des Behälters 1 auf dem in Drehrichtung D der Welle 2 ansteigenden Teil angeordnet und überdecken etwa 10-50%, vorzugsweise 25%, des von den Mischschaufeln 3 bestrichenen Umfangs des Behälters 1.The grinding disks 5, which perform a wobble movement when rotating, interact on their peripheral surface with stationary counter surfaces, both of which are profiled. The peripheral surface is formed on interchangeable grinding segments 7, while the counter surfaces are formed by the inner surfaces 8 of cylinder parts that can be adjusted relative to the container 1. The cylinder parts are arranged on supports 9 that can be adjusted from the outside in the container 1 in such a way that mixing blades 3 can pass through them on one or both sides , as can be seen from Fig. 1. The adjustable supports 9 for the cylinder parts are sealed by means of bellows 10. The cylinder parts are arranged in the lower region of the container 1 on the part rising in the direction of rotation D of the shaft 2 and cover approximately 10-50%, preferably 25%, of the circumference of the container 1 covered by the mixing blades 3.

Die Wirkbreite b der Mahlscheiben 5 entspricht jeweils etwa der axialen Ausdehnung einer Mischschaufel 3. Die Zylinderteile stehen, wie aus der Zeichnung ersichtlich ist, unter der Wirkung einer Feder 11. Hierbei können die nachstellbaren Stützen 9 der Zylinderteile als Federkolben ausgebildet sein, wobei die Federkolben vorzugsweise durch sogenannte Konstantfederstützen gebildet sind, die hier nicht besonders dargestellt sind, so daß ein konstanter Andruck erreicht wird. Dem Füllen und Entleeren des Behälters 1 dienen Stutzen 12, 13. Es sind Vorkehrungen getroffen, um die vom zu behandelnden Gut abgegebene Feuchtigkeit abziehen und Reaktanten zuführen zu können.The effective width b of the grinding disks 5 corresponds approximately to the axial extent of a mixing blade 3. The cylinder parts are, as can be seen from the drawing, under the action of a spring 11. Here, the adjustable supports 9 of the cylinder parts can be designed as spring pistons, the spring pistons are preferably formed by so-called constant spring supports, which are not particularly shown here, so that a constant pressure is achieved. Stubs 12, 13 are used for filling and emptying the container 1. Provisions have been made in order to be able to draw off the moisture given off by the material to be treated and to be able to supply reactants.

Claims (13)

1. Mixer for bulk material and suspensions, particularly fibrous suspensions such as cellulose derivatives, comprising a horizontal container having a drum-shaped or trough-shaped container wall, and comprising in the container mixing paddles which are attached to a rotatable shaft via retaining arms projecting radially from the said shaft and rotate in the vicinity of the container wall, and comprising at least a first comminuting element which is attached to the shaft and at least a second comminuting element which is attached to the container wall and which cooperates with the first comminuting element, characterised in that the first comminuting element is formed by a grinding wheel (5) which is inclined to the shaft (2), that is, in such a manner that it performs a tumbling motion while rotating, that the second comminuting element is in the form of a cylinder part, that the cooperation of the two comminuting elements is affected through the circumference of the grinding wheel (5) and the inner face (8) of the cylinder element, that the cylinder element is arranged at a distance from the container wall on a support (9) which can be adjusted from outside the container (1), and that parts of the mixing paddles (3) move through the area between the container wall and the cylinder element on one side or on both sides of the support (9).
2. Mixer according to Claim 1, characterised in that the circumference of the grinding wheel (5) and the inner face (8) of the cylinder element are profiled.
3. Mixer according to Claim 1 or 2, characterised in that the circumference of the grinding wheel (5) is formed on interchangeable grinding segments (7).
4. Mixer according to any one of Claims 1 to 3, characterised in that the cylinder element which is mounted on a support (9) is sealed off from the container (1) by means of a bellows (10).
5. Mixer according to any one of Claims 1 to 4, characterised in that the cylinder element is located in the lower region of the container (1).
6. Mixer according to Claim 5, characterised in that the cylinder element is arranged on that part of the container (1) extending upwards in the direction of rotation (D) of the shaft (2).
7. Mixer according to any one of Claims 1 to 6, characterised in that the inner face or faces (8) of the cylinder element or elements cover approximately 10 to 50% of the circumference of the container (1) which is swept by the mixing paddles (3).
8. Mixer according to Claim 7, characterised in that the inner face or faces (8) of the cylinder element or elements cover 25% of the circumference.
9. Mixer according to any one of Claims 1 to 8, characterised in that the effective width of a grinding wheel (5) is approximately equal to the axial extension of a mixing paddle (3).
10. Mixer according to anyone of Claims 1 to 9, characterised in that the cylinder element can be pressed against the grinding wheel (5) by means of a spring (11).
11. Mixer according to Claim 10, characterised in that the cylinder element can be pressed against the grinding wheel (5) by a constant pressure.
12. Mixer according to Claim 10, characterised in that the adjustable support (9) of the cylinder element is in the form of a spring-operated piston.
EP81107682A 1980-10-02 1981-09-28 Mixer for bulk goods, especially for fibrous suspensions Expired EP0049450B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3037332 1980-10-02
DE3037332A DE3037332C2 (en) 1980-10-02 1980-10-02 Mixer for bulk material and suspensions, especially fibrous suspensions

Publications (3)

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

Family

ID=6113479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81107682A Expired EP0049450B1 (en) 1980-10-02 1981-09-28 Mixer for bulk goods, especially for fibrous suspensions

Country Status (5)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3210912A1 (en) * 1980-10-02 1983-09-29 Draiswerke Gmbh, 6800 Mannheim Mixer for bulk material
DE3515318A1 (en) * 1985-04-27 1986-10-30 Draiswerke Gmbh, 6800 Mannheim PIN MILL FOR MIXERS
DE3538070A1 (en) * 1985-10-25 1987-04-30 Krauss Maffei Ag MIXING AND KNEADING DEVICE
DE3728710C2 (en) * 1987-08-28 1997-08-21 Loedige Maschbau Gmbh Geb Mixer for mixing bulk solids
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 (en) * 1991-07-27 1995-04-27 Babcock Bsh Ag Use of a mixing, granulating and drying device
CN1241679C (en) * 2001-04-25 2006-02-15 利斯特股份公司 Mixer bars cleaning in radial or axial manner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020002B (en) * 1953-09-25 1957-11-28 Wilhelm Loedige Mixing machines with mixing and centrifugal elements distributed helically on a shaft in a container
DE1102534B (en) * 1957-12-20 1961-03-16 Fritz Loedige Device for mixing, crushing and optionally moistening powdery, fine-grained or fibrous materials
DE1782585B2 (en) * 1968-09-20 1976-05-26 Draiswerke Gmbh, 6800 Mannheim MIXING MACHINE

Family Cites Families (12)

* 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 (en) * 1949-01-01 1956-07-05 Werner Reisten Mill for the continuous grinding of fibers such as paper pulp, cellulose, wood pulp and the like. like
FR1058662A (en) * 1951-06-25 1954-03-18 Glanzstoff Ag Compartment shredder
US3027102A (en) * 1957-12-20 1962-03-27 Lodige Wilhelm Apparatus for mixing and comminuting
GB976372A (en) * 1959-12-29 1964-11-25 Neidl Georg Fibrous material and method and apparatus for its production
CH566167A5 (en) * 1973-09-28 1975-09-15 Bicik Vladislav
DE2646512C2 (en) * 1976-10-15 1987-04-16 Fritz Lödige Device for batch drying of bulk material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020002B (en) * 1953-09-25 1957-11-28 Wilhelm Loedige Mixing machines with mixing and centrifugal elements distributed helically on a shaft in a container
DE1102534B (en) * 1957-12-20 1961-03-16 Fritz Loedige Device for mixing, crushing and optionally moistening powdery, fine-grained or fibrous materials
DE1782585B2 (en) * 1968-09-20 1976-05-26 Draiswerke Gmbh, 6800 Mannheim MIXING MACHINE

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Aufbereitungs-Technik" Heft 6 1971 (Seiten 7/8) *
"Chemiker-Zeitung", 94, (1970) Nr. 4 Seite 321 *

Also Published As

Publication number Publication date
DE3169701D1 (en) 1985-05-09
DE3037332A1 (en) 1982-04-15
JPS5791728A (en) 1982-06-08
JPH0140648B2 (en) 1989-08-30
EP0049450A2 (en) 1982-04-14
ES8207437A1 (en) 1982-10-01
ES505955A0 (en) 1982-10-01
EP0049450A3 (en) 1983-04-20
DE3037332C2 (en) 1983-09-08
US4413790A (en) 1983-11-08

Similar Documents

Publication Publication Date Title
DE2947758C2 (en)
EP0627262B1 (en) Continuously working agitator ball mill for fine and ultrafine milling of material
EP1035237B1 (en) Apparatus for treating or further processing, especially for breaking up of materials or material mixtures
EP0304604B1 (en) Mixer with stirrer and grinder
DE2701826C2 (en) Device for extracting juice and pulp from food
EP0049450B1 (en) Mixer for bulk goods, especially for fibrous suspensions
DE2453541A1 (en) DEVICE FOR CRUSHING WASTE
EP0071906B1 (en) Household grain-mill
EP0200003B1 (en) Mixer with a pin mill
DE3308390C2 (en) Grinding grinder
EP0124138B1 (en) Method and apparatus for grinding vegetal products
DE2633520C2 (en) Grinder for cocoa beans
DE3844380C1 (en) Agitator mill with separating device in a rotating cage
DE4301281C2 (en) Device for crushing suspended fibrous material
EP0054916A2 (en) Grinder for finely dividing bakery products
DE4213608A1 (en) METHOD AND DEVICE FOR CRUSHING RUBBER CRACKS
EP0946304A1 (en) Blade mill for grinding plastic material
DE3611691A1 (en) CRUSHING DEVICE
EP2548648B1 (en) Mill for comminuting of material
DE1245257B (en) Device for comminuting solid, grain-like substances in particular
DE1461012C3 (en) Beware of shredding paper stock
AT392873B (en) HAECKSLER
AT384752B (en) CRUSHING DEVICE, ESPECIALLY FOR FEED MATERIAL OR THE LIKE.
EP0420000B1 (en) Knife set for a comminuting machine
DE1288888B (en) Device for grinding lumpy goods

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DRAISWERKE GMBH

17P Request for examination filed

Effective date: 19830308

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 3169701

Country of ref document: DE

Date of ref document: 19850509

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19860307

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19920803

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920916

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920918

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19920923

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19920930

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19921002

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19930928

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19930930

Ref country code: CH

Effective date: 19930930

Ref country code: BE

Effective date: 19930930

BERE Be: lapsed

Owner name: DRAISWERKE G.M.B.H.

Effective date: 19930930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19940401

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930928

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 81107682.7

Effective date: 19940410