EP0584151A1 - Outil melangeur. - Google Patents

Outil melangeur.

Info

Publication number
EP0584151A1
EP0584151A1 EP92910039A EP92910039A EP0584151A1 EP 0584151 A1 EP0584151 A1 EP 0584151A1 EP 92910039 A EP92910039 A EP 92910039A EP 92910039 A EP92910039 A EP 92910039A EP 0584151 A1 EP0584151 A1 EP 0584151A1
Authority
EP
European Patent Office
Prior art keywords
mixing
container
wall
mixing element
shaft
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
EP92910039A
Other languages
German (de)
English (en)
Other versions
EP0584151B1 (fr
Inventor
Peter Wilson
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.)
Gebrueder Loedige Maschinenbau GmbH
Original Assignee
Gebrueder Loedige Maschinenbau 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6431516&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0584151(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Gebrueder Loedige Maschinenbau GmbH filed Critical Gebrueder Loedige Maschinenbau GmbH
Publication of EP0584151A1 publication Critical patent/EP0584151A1/fr
Application granted granted Critical
Publication of EP0584151B1 publication Critical patent/EP0584151B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0726—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis having stirring elements connected to the stirrer shaft each by a single radial rod, other than open frameworks
    • 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
    • B01F27/05—Stirrers
    • B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
    • B01F27/091—Stirrers characterised by the mounting of the stirrers with respect to the receptacle with elements co-operating with receptacle wall or bottom, e.g. for scraping the receptacle wall

Definitions

  • the invention is based on a mixing tool for the treatment of solids or individual solid components in a horizontally lying container with a concentrically arranged shaft, which is rotatably mounted in the container and carries a plurality of mixing tools which are spaced in the axial direction and fastened to the shaft and which point radially towards the inner wall of the container and end at a short distance from the inner wall of the container, the individual mixing tool having an arm and a mixing body composed of at least two plate-shaped mixing elements.
  • mixers with horizontally lying containers are known, in which the material to be mixed is moved by mixing tools rotating with a shaft.
  • Ploughshare blades which have proven themselves in a wide range of applications, are primarily used as mixing bodies. These mixing tools can be used to produce multi-component mixtures of high mixing quality.
  • plate-shaped mixing bodies are known which have concave and / or convex surface sections. If strongly adhering products are mixed, dried or processed in some other way in horizontally arranged mixers, dryers or reactors, it is known that a product layer can build up on the inside wall of the container is formed between the inner wall of the container and the end face of the mixing elements (product approach).
  • a larger gap between the mixing tools and the inner wall of the container arises because the shaft has a certain deflection due to its own weight, provided that the shaft is only rotatably supported at the shaft ends. Furthermore, a larger gap between the mixing tool and the inner wall of the container is also mandatory if the container wall is heated by means of an energy source. The container then undergoes a certain amount of deformation, which differs depending on the temperature and the material used for the container or for the shaft and for the mixing tool. It is therefore easy to see why there must be an enlarged gap between the mixing tool and the inner wall of the container, even when manufacturing mixers, dryers and reactors with high precision.
  • the product batch building up in the gap can harden, build up further and increase the energy consumption of the mixing tools.
  • the batch can flake off from time to time and thereby deteriorate the quality of the final mix.
  • Such a product batch is also overheated in dryers or reactors, that is to say the product itself is destroyed in the region of the inner wall of the container. In a reaction process, stoichiometric ratios can change uncontrollably.
  • the known mixing tool is therefore resiliently fastened in the product space in order to use a predetermined spring force to gap widths between the inner wall of the container and the end face of the Compensate mixing tool. This requires complex construction and is prone to malfunction in production.
  • the invention is therefore based on the object of further developing a mixing tool of the type mentioned at the outset in such a way that the formation of product in the gap between the inner wall of the container and the mixing tool is largely avoided or can be reliably removed.
  • the mixing elements are arranged at least partially one behind the other in the circumferential direction and have cutouts at the free end pointing towards the inner wall of the container, which are offset from the first mixing element to the second mixing element, and that the cutouts in the front view are at least partially from Projections of the second mixing element are covered.
  • the mixing tool according to the invention thus has the essential advantage that it is possible with the mixing tool to remove a product batch that builds up in the gap in narrow paths.
  • the power consumption of the shaft that carries the mixing tools can be kept low.
  • a protrusion is provided between the individual cutouts, which borders on the cutouts. By means of these projections, the product batch is torn open over a certain axial length.
  • the still existing product attachment strips are then removed from protrusions of the second mixing element. With the recesses arranged offset from one another on the mixing elements, it is ensured that the entire inner wall of the container is coated in the area of the plane of rotation of a mixing tool and thus permanent circular product attachment rings cannot occur.
  • the individual mixer witnesses also work together in such a way that the entire axial length of the container inner wall is coated.
  • the individual mixing elements continue to be exposed to lower moments and can therefore be manufactured with a reduced material thickness.
  • an end face of the mixing elements facing the inner wall of the container forms a wedge gap with the inner wall of the container.
  • the rear edges of the mixing elements are at a greater distance from the inner wall of the container than the front edges.
  • the mixing elements are also arranged obliquely to the arm of the mixing tool and in the plane of rotation of the mixing tool, so that a defined conveying characteristic of the product to be processed can take place in the container.
  • the product exchange in the container and thus the mixing quality or the yield can be improved with such an arrangement of the mixing elements.
  • the projections of the second mixing element are designed such that they describe the same orbit as the recesses of the first mixing element.
  • the first projections of the first mixing element are in the same association with the second recesses of the second mixing element.
  • the mixing elements aligned differently i. H. the mixing elements do not run exactly parallel one after the other, the recesses of the first mixing element must be adapted to the projections of the second mixing element in such a way that they describe the same orbits on an inner wall of the container.
  • the mixing tool according to the invention thus corresponds to the expanded requirements in mixing technology. With the subsequent mixing element, additional backmixing and thus better homogeneity of the end product can be achieved.
  • the power requirement compared to conventional mixing elements is lower. This is due to effects that are known per se.
  • the product emptying is improved and the granulating properties of the invention Mixing tools are better than the mixing tools known from the prior art.
  • FIG. 1 shows a cross section through a horizontally arranged container with a concentric shaft and a mixing tool according to the invention, which is fastened to the shaft;
  • FIG. 2 is a perspective view of a mixing tool according to the invention with a container section assigned to it;
  • FIG. 3 shows a processing of a container section and a mixing tool according to the invention assigned to the container section; 4 an overall view of a mixing tool according to the invention, as can be fastened to a shaft in a horizontally arranged container.
  • FIG. 1 shows in cross section a mixing tool 10 as it is arranged on a shaft 11 and in the container 12.
  • the mixing tool 10 projects radially from the shaft 11 toward a container inner wall 13.
  • the mixing tool 10 is composed of an arm 14 and a first mixing element 15 and a second mixing element 16.
  • the arm 14 of the mixing tool 10 is held in a pocket 17 which is attached to the shaft 11 in a rotationally fixed manner.
  • the arm 14 is to be fastened in the pocket 17 by means of fastening means which engage in bores 18, 18 '.
  • the first mixing element 15 has first recesses 19, 19 ', 19 "which are offset from second recesses 20, 20' of the second mixing element.
  • Second projections 22, 22 ', 22 are provided on the second mixing element 16 and adjoin the second recesses 20, 20'.
  • the recesses 19, 19 ', 19" and 20, 20' are offset from one another in such a way that in the case of the mixing elements 15, 16 arranged one behind the other, as seen in the circumferential direction, one recess 19 each has a projection 22 of the second mixing element 16 assigned.
  • the mixing tool 10 moves in the direction of the arrow 23 along the inner wall 13 of the container.
  • a first gap 24 is formed between the first mixing element 15 and the inner wall 13 of the container, and a second gap 25 exists between the second mixing element 16 and the inner wall 13 of the container
  • Mixing elements 15, 16 are arranged one behind the other in FIG. 1 in an angled position relative to the arm 14 such that a first recess 19, 19 ', 19 "cooperates with a second projection 22, 22', 22".
  • FIG. 2 shows a perspective view of a mixing tool 30 as it is assigned to an inner wall 31 of the container.
  • a mixing tool 30 is assigned to an inner wall 31 of the container.
  • FIG. 2 shows a perspective view of a mixing tool 30 as it is assigned to an inner wall 31 of the container.
  • only one container section is shown here, and the figure has also been omitted to show the case on which the mixing tool 30 can be fastened.
  • the mixing tool 30 has a first mixing element 33 and a second mixing element 34 on an arm 32.
  • the mixing tool 30 rotates in the direction of the arrow 35 on a circular path along the container channel wall 31.
  • a product batch with differently densely arranged points is shown schematically.
  • the product approach free retaining wall 31 is shown at 36 '.
  • the first and second recesses 37, 37 ', 37", 38, 38' are designed such that that they can cooperate with a first projection 39, 39 ', 39 "and a second projection 40, 40', 40" of the first and second mixing elements 33, 34.
  • product offset 36 is removed in lanes from the container channel wall 31 via the offset first and second projections 39, 39 ', 39 "and 40, 40', 40".
  • FIG. 3 shows a mixing tool 50, as it is assigned to a developed container section 51.
  • An arm 52 of the mixing tool 50 is shown without a shaft.
  • a first mixing element 53 and a second mixing element 54 are fastened to the arm 52.
  • the mixing elements 53, 54 sweep over the inner side of the container section 51.
  • First recesses 56, 56 ', 56 "of the first mixing element 53 and second recesses 57, 57' of the second mixing element 54 are arranged offset to one another.
  • first projections 58, 58 ', 58 "and second projections 59, 59', 59"
  • a dotted product attachment 60 is removed on the inside of the container section 51 in axially short paths.
  • the mixing tool 70 is composed of an arm 71 and a first mixing element 72 and a second mixing element 73.
  • the second mixing element 73 is arranged behind the first mixing element 72.
  • First recesses 74, 74 ', 74 are provided on the first mixing element 72, which in the installed state of the mixing tool 70 point towards the inner wall of the container.
  • Second recesses 75, 75' are also provided on the second mixing element 73, offset from the first Recesses 74, 74 ', 74 "of the first mixing element 72 are arranged.
  • first projections 76, 76 ', 76 the second recesses 75, 75 'are covered, and the second projections 77, 77', 77 "cover the first recesses 74, 74 ', 74" of the first mixing element 72.
  • the mixing tool 70 can move in the direction of the arrows 78 when it is open a shaft is rotated fastened.
  • the mixing tool 70 can be fastened to a shaft not shown in the figure via bores 79, 79 '.
  • End faces 80, 81 of the first and second mixing elements 72, 73 can form a wedge gap that opens against the direction of travel with an adjacent inner wall of the container.
  • the mixing elements 72, 73 are inclined to the plane of rotation.
  • the end faces 80, 81 of the mixing element 72, 73 can be profiled in a wide variety of ways over the entire axial length of the mixer.
  • the recesses and projections are rectangular. Different polygonal shapes are conceivable both for the recesses and for the projections.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

Un outil mélangeur de traitement de matières solides ou de composants solides individuels est fixé dans un récipient horizontal (12) sur un arbre (11) concentrique par rapport au récipient (12). L'arbre (11) est monté rotatif dans le récipient (12). Plusieurs outils mélangeurs (10) axialement espacés sont agencés sur l'arbre (11). Les outils mélangeurs (10) sont radialement orientés vers la paroi intérieure (13) du récipient et se terminent à une distance minime de la paroi intérieure (13) du récipient. L'outil mélangeur (10) comprend un premier élément mélangeur (15) et un deuxième élément mélangeur (16) agencés l'un derrière l'autre, dans le sens de rotation, sur un bras (14). Les éléments mélangeurs (15, 16) sont pourvus d'évidements (19, 19', 19'', 20, 20') orientés vers la paroi intérieure (13) du récipient. Les évidements (19, 19', 19'') du premier élément mélangeur (15) sont décalés par rapport aux évidements (20, 20') du deuxième élément mélangeur (16). Vus de face, des protubérances (21, 21') du premier élément mélangeur (15) recouvrent les évidements (20, 20') du deuxième élément mélangeur (16).
EP92910039A 1991-05-11 1992-05-06 Outil melangeur Expired - Lifetime EP0584151B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4115496A DE4115496A1 (de) 1991-05-11 1991-05-11 Mischwerkzeug
DE4115496 1991-05-11
PCT/DE1992/000377 WO1992020440A1 (fr) 1991-05-11 1992-05-06 Outil melangeur

Publications (2)

Publication Number Publication Date
EP0584151A1 true EP0584151A1 (fr) 1994-03-02
EP0584151B1 EP0584151B1 (fr) 1995-03-01

Family

ID=6431516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92910039A Expired - Lifetime EP0584151B1 (fr) 1991-05-11 1992-05-06 Outil melangeur

Country Status (7)

Country Link
US (1) US5407273A (fr)
EP (1) EP0584151B1 (fr)
JP (1) JPH07106313B2 (fr)
AT (1) ATE119068T1 (fr)
DE (2) DE4115496A1 (fr)
ES (1) ES2073300T3 (fr)
WO (1) WO1992020440A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425297C2 (de) * 1994-07-18 1996-11-21 Loedige Maschbau Gmbh Geb Homogenisierungswerkzeug
US5523501A (en) * 1994-12-22 1996-06-04 E. I. Du Pont De Nemours And Company Catalytic hydrogenolysis
DE19600466A1 (de) * 1996-01-09 1997-07-10 Henkel Kgaa Verfahren zur Herstellung von granularen Wasch- oder Reinigungsmitteln bzw. Komponenten hierfür
DE19743923C2 (de) * 1997-10-04 2000-06-15 Loedige Maschbau Gmbh Geb Mischwerkzeug
JP4881652B2 (ja) * 2006-05-15 2012-02-22 梶原工業株式会社 攪拌羽根及び攪拌装置
CN103726431B (zh) * 2013-12-08 2016-02-24 广东易山重工股份有限公司 一种沥青石料混合搅拌加热釜的搅拌机构

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US739422A (en) * 1902-06-28 1903-09-22 Robert Vinton Jones Cooking utensil.
US969016A (en) * 1908-02-13 1910-08-30 Joseph Willmann Ice-cream freezer.
US1308819A (en) * 1918-05-10 1919-07-08 Borden S Condensed Milk Company Evaporating apparatus.
US2320976A (en) * 1940-12-12 1943-06-01 Armstrong Cork Co Cleaning device for mixing or agitating vessels
FR1001188A (fr) * 1946-03-22 1952-02-20 Agitateur
DE1122355B (de) * 1958-11-26 1962-01-18 Wilhelm Loedige Vorrichtung zum Mischen
GB882662A (en) * 1959-11-26 1961-11-15 Loedige Wilhelm Improvements relating to mixing machines
US3194504A (en) * 1962-09-07 1965-07-13 Patterson Ind Inc Mixing machine
DE2402891A1 (de) * 1973-01-31 1974-08-08 Frigomat S A S Di Cipelletti A Misch- und schabschnecke fuer diskontinuierliche speiseeismaschinen
US4095307A (en) * 1976-06-28 1978-06-20 Lox Equipment Company Scraper for a vessel interior surface
DE2739106C2 (de) * 1977-08-30 1985-02-28 Giusti International Ltd., London Vorrichtung zum Rühren einer feste Teilchen enthaltenden Flüssigkeit
US4199266A (en) * 1977-08-31 1980-04-22 Giusti Raolo B Processing vessels
DE3332069A1 (de) * 1983-09-06 1985-03-21 Hoechst Ag Ruehrer fuer wandnahes ruehren
DE3826039A1 (de) * 1988-07-30 1990-02-01 Henkel Kgaa Schlagmuehle
US4951262A (en) * 1989-04-18 1990-08-21 Halliburton Company Agitator and baffles for slurry mixing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9220440A1 *

Also Published As

Publication number Publication date
JPH07106313B2 (ja) 1995-11-15
ES2073300T3 (es) 1995-08-01
ATE119068T1 (de) 1995-03-15
EP0584151B1 (fr) 1995-03-01
US5407273A (en) 1995-04-18
DE4115496A1 (de) 1992-11-12
JPH06503268A (ja) 1994-04-14
WO1992020440A1 (fr) 1992-11-26
DE59201554D1 (de) 1995-04-06
DE4115496C2 (fr) 1993-03-04

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