EP0836880A1 - Mélangeur pour le traitement en continu de matériaux coulants - Google Patents

Mélangeur pour le traitement en continu de matériaux coulants Download PDF

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Publication number
EP0836880A1
EP0836880A1 EP97117522A EP97117522A EP0836880A1 EP 0836880 A1 EP0836880 A1 EP 0836880A1 EP 97117522 A EP97117522 A EP 97117522A EP 97117522 A EP97117522 A EP 97117522A EP 0836880 A1 EP0836880 A1 EP 0836880A1
Authority
EP
European Patent Office
Prior art keywords
mixer
shaft
arms
mixer shaft
mixing
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.)
Withdrawn
Application number
EP97117522A
Other languages
German (de)
English (en)
Inventor
Helmut Kramer
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.)
Clariant Produkte Deutschland GmbH
Original Assignee
Clariant 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
Priority claimed from DE19642659A external-priority patent/DE19642659A1/de
Priority claimed from DE19714209A external-priority patent/DE19714209A1/de
Application filed by Clariant GmbH filed Critical Clariant GmbH
Publication of EP0836880A1 publication Critical patent/EP0836880A1/fr
Withdrawn legal-status Critical Current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
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/071—Fixing of the stirrer to the shaft
    • 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
    • B01F27/0722—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis perpendicular with respect to the rotating axis
    • 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
    • B01F27/60—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
    • B01F33/833—Devices with several tools rotating about different axis in the same receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
    • B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
    • B01F33/83612—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by crushing or breaking

Definitions

  • the invention relates to a mixer for the continuous processing of flowable Materials, with a mixer and at least one attached to the side of the mixer Mill as a mixer accelerator, whereby the mixer consists of an in a mixing container concentrically rotating mixer shaft on which coulter-like mixing tools protrude radially from the mixer shaft Mixing arms are arranged.
  • mixers are used in industries, for mixing and dispersing from slightly liquid to pasty suspensions, for granulating fine-grained Materials for wetting and coating powdery materials.
  • mixers are known, for example, from EP-0 645 179 A1 which consist of a Mixing drum exist in which a shaft is arranged centrally on the Mixing tools are attached.
  • This shaft with the mixing tools is about one Drive system consisting of an electric motor, V-belt drive and reduction gears driven. Due to the special shape of the mixing tools and their Arranged on the shaft, the mix is swirled intensively.
  • the mixers it is common for the mixers to run across the axis trending mixing tools to arrange mills, which the mixing components through the mixing tools.
  • a mill with grinding elements is known, which is known the mixer is arranged that the mixing tools between the container and the grinding elements can be moved.
  • the mill comprises two concentrically arranged grinding elements that are freely movable against each other. At least one these grinding elements allow product movement in the axial and radial directions and, while the further grinding element is only axially penetrable.
  • the one The grinding element is designed as a rotor and the other grinding element as a stator.
  • the knife mills are based on the principle of impact crushing, whereby the Components are divided, defibrated, dispersed and compressed.
  • pin mills include Cutting edges attached to the wing tips, which together with the Pins of the stator increase the shear effect in the grinding gap.
  • grinders for example, the frustoconical frustum-shaped surface around the friction, mixing and To enlarge the deagglomeration effect.
  • the mixer that uses known mills has in common that the product bulk density of granules is insufficient.
  • This object is achieved in that the mixer arms are distributed over the length and circumference of the mixer shaft so that the projections of the mixer arms in a plane perpendicular to the mixer shaft different angles ⁇ i in the range from 60 ° to 195 °, with i ⁇ 3, include.
  • the projections of at least two mixer arms are diametrically opposite in the plane perpendicular to the mixer shaft. It then applies that the other mixer arms are distributed over the circumference and over the length of the mixer shaft in such a way that their projections into the plane perpendicular to the mixer shaft enclose angles ⁇ i not equal to 180 ° with one another.
  • the mixing tools expediently have the geometry of plowshares, which have a cavity, but also the mixing tools Have blade geometry, corresponding to the well-known Becker blade.
  • tips of the plowshares are on a spiral track arranged and move on the mixer shaft during rotation Spiral path and the distance of the spiral path from the mixer shaft is constant.
  • the invention achieves the advantage that the Materials are passed through the mixer more slowly and thereby the bulk density achieved is higher.
  • mixer arms projecting radially from the mixer shaft 11 distributed so that they face each other in pairs.
  • the individual positions of the Mixer arms 11 are marked by the reference numbers 1 to 8.
  • a mixing tool 12 On each of the mixer arms 11, a mixing tool 12 is attached, which is is a ploughshare that has a cavity 13.
  • the mixing tool 12 can also have the shape of a shovel.
  • the mixing tools 12 move on a circumferential circle at a short distance from the inner wall of a Mixing container 9, as can be seen from FIGS. 3 to 5.
  • the rotation of the Mixer shaft 10 is clockwise, with the tips 14 of the Move mixing tools 12 along a spiral path 15.
  • FIG. 2 shows the distribution of the mixing tools 12 along the mixer shaft shown schematically.
  • the product is brought in, for example, close to the Position 1 and the product outlet near position 8 of the respective mixer arm 11.
  • the or an additional product inlet near position 4 or 5 of the respective mixer arm 11 may be arranged with the product outlet unchanged.
  • Fig. 3 the cylindrical mixing container 9 is shown in cross section.
  • the tips 14 the plowshares or the mixing tools 12 show the clockwise direction of rotation Mixer shaft 10.
  • the mixer arms 11 are inserted in terminals 16 and with them screwed or welded, the clamps radially from the mixer shaft 10 stand out.
  • the terminals 16 are over the length and circumference of the mixer shaft 10 adjustable or rotatable.
  • Both in Fig. 3 and in Figs. 4 and 5 are the Positions 1 to 8 each as projections of the mixer arms into the plane of the drawing is perpendicular to the mixer shaft, drawn or indicated. 3 are in the Positions 1 and 8 the respective mixer arms 11 and the attached Mixing tools 12 shown in section.
  • the mixer shaft 10 rotates clockwise so that positions 1 to 8 of mixer arms 11 are clockwise - Direction of view from the inlet to the outlet - are considered, the angle count over the circumferential circle in position 1 at 0 °, clockwise over the Position 2, 3 etc. until position 8 is continued.
  • the angular division of the Circumference also happens clockwise.
  • the mixer container 9 is with a product inlet 18 on the top and with a product outlet 19 on the Underside.
  • Fig. 3 are, for example, 4 mixer arms 11 over a circumferential circle Mixer shaft 10 distributed. There is therefore a division of 4. The division is complete Generally it should be noted that the division into 3, 4, 5 or 7 division in Principle relates only to the first full circumferential circle of the mixer shaft 10.
  • the mixer arms 11 are in positions 5 over the next circumferential circle 210 ° and 6 distributed at 60 °.
  • the mixer arms 11 lie on the last circumferential circle in position 7 at 300 ° and in position 8 at 180 °.
  • the mixing tools 12 are aligned in the embodiment according to FIG. that the mix is conveyed forward at the same time as it is mixed, i.e. in Is transported towards the product outlet 19.
  • the mixing container 9 shown in FIG. 4 contains a mixer shaft 10 divided into three parts first circumferential circle of the mixer shaft, which positions 8, 7 and 6 of the Mixer arms 11 includes.
  • the respective mixer arm 11 is in position 1 at 0 ° and in positions 2 to 8 at 90 °, 210 °, 315 °, 150 °, 300 °, 60 ° and 180 °.
  • the line of sight is from the outlet towards the inlet and there is one Return of the mix in the direction of the inlet, which compresses the Mixed goods causes.
  • Fig. 5 shows a cross section through a mixer container 9 with a mixer shaft 10, which has a division of 5 and the positions 8, 7, 6, 5 and 4 of the mixer arms 11 includes.
  • the line of sight is from the outlet towards the inlet.
  • the respective Mixer arm 11 is in position 1 at 0 °, in position 2 at 60 °, in the position 3 at 135 °, in position 4 at 210 ° and in position 5 at 285 °.
  • the remaining Mixer arms in positions 6, 7 and 8 are at 30 °, 90 ° and 180 °.
  • the mixing tools are set in the same way as in the embodiment according to FIG. 4, that they bring about a return of the mix during mixing, i.e. the bulk of the mix in the direction of product entrance 18 and only for smaller part is transported towards product outlet 19, i.e. it is done as with the embodiment of FIG. 4 a compression of the mix.
  • the projections of at least two mixer arms 11 are diametrically opposite in the plane of the drawing.
  • the remaining mixer arms 11 are distributed over the circumference and over the length of the mixer shaft 10 in such a way that their projections into the plane of the drawing or the plane perpendicular to the mixer shaft 10 include angles ⁇ i not equal to 180 ° with one another.
  • the mixing tools 12 are aligned parallel to the mixer shaft 10 and the tips 14 of the mixing tools 12 move during a rotation of the mixer shaft 10 on a circular path 15.
  • the distance of the circular path 15 from the mixer shaft 10 or from the inner wall of the mixer container 9 is constant .
  • angles ⁇ i between the mixer arms 11 for the individual mixing tools 12 are compiled for the embodiments of the mixer container and the mixer shaft according to FIGS. 3 to 5.
  • TAED-CMC granules for the production of detergents are produced in the mixing containers 9.
  • CMC is the raw material carboxymethyl cellulose and TAED is the activator tetraacetyl ethylene diamine. Both components are detergent raw materials.
  • CMC also serves as a binder in TAED granulation.
  • the grain sizes of TAED and CMC are mainly in the order of 75 to 150 ⁇ m, while the product specification provides grain sizes of 500 to 1700 ⁇ m, which have to be achieved by granulation. In view of the compact detergents that have recently come onto the market, bulk densities of> 500 g / dm 3 are sought for grain sizes in this range.
  • the product bulk density has only been increased with discontinuous mixers which, as mixing accelerators, contain two knife or pin mills which are attached to the side of this ploughshare mixer.
  • the mixing arms with the plowshares are arranged on the mixer shaft at equidistant intervals and at equal angles ⁇ i between the mixer arms.
  • the bulk densities remain below 500 g / dm 3 .
  • the resulting bulk density is dependent both on the amount of liquid added in the pelletizing step, the set mixer speed and the type of mixing accelerator used.
  • Reverse-promoting setting (division of 5) (Ploughshare illustration Fig. 5)
  • Product composition TAED 94% CMC 6%
  • Water addition 16%
  • a 3, 4 or 5 division on the mixer shaft can be set.
  • the angles ⁇ i are counted counterclockwise due to the direction of view from the inlet to the outlet or because of the forward conveyance of the mix, while in the division of 3 and 5 (Fig. 4 and 5) the Angle ⁇ i should be counted clockwise due to the direction of view from the outlet to the inlet or due to the back conveyance of the mix.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP97117522A 1996-10-16 1997-10-09 Mélangeur pour le traitement en continu de matériaux coulants Withdrawn EP0836880A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19642659A DE19642659A1 (de) 1996-10-16 1996-10-16 Mischer zum kontinuierlichen Verarbeiten von fließfähigen Materialien
DE19642659 1996-10-16
DE19714209A DE19714209A1 (de) 1997-04-07 1997-04-07 Mischer zum kontinuierlichen Verarbeiten von fließfähigen Materialien
DE19714209 1997-04-07

Publications (1)

Publication Number Publication Date
EP0836880A1 true EP0836880A1 (fr) 1998-04-22

Family

ID=26030403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117522A Withdrawn EP0836880A1 (fr) 1996-10-16 1997-10-09 Mélangeur pour le traitement en continu de matériaux coulants

Country Status (1)

Country Link
EP (1) EP0836880A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10012072B4 (de) * 2000-03-14 2015-08-27 Hermann Linden Gmbh & Co. Kg Inline Mischer
US20160351899A1 (en) * 2015-06-01 2016-12-01 Toyota Jidosha Kabushiki Kaisha Device for producing composite active material powder and method for producing composite active material powder
CN110732257A (zh) * 2019-11-15 2020-01-31 莱芜德正环保科技有限公司 立式危废物料搅拌装置
EP3702023A3 (fr) * 2019-02-05 2020-11-18 KNIELE GmbH Mélangeur à palier oblique
IT202200024120A1 (it) * 2022-11-23 2024-05-23 Biogas Eng S R L Miscelatore per fermentatori per biogas, e metodo per il suo assemblaggio

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2158365A (en) * 1985-05-09 1985-11-13 Littleford Bros Inc Combined mixing, reacting, drying and filtering device
EP0200003A2 (fr) * 1985-04-27 1986-11-05 Draiswerke GmbH Mélangeur avec un moulin à pointes
EP0304604A2 (fr) * 1987-08-28 1989-03-01 Gebr. Lödige Maschinenbau Gesellschaft mbH Mélangeur avec agitateur et broyeur
EP0474102A1 (fr) * 1990-09-05 1992-03-11 IMCATEC GmbH Procédé et dispositif pour moudre et mélanger intensivement des matériaux en vrac et/ou des liquides de différente fluidité, densité ou viscosité dans le but d'obtenir des mélanges homogènes
EP0645179A1 (fr) * 1993-09-28 1995-03-29 DRAISWERKE GmbH Moulin à frottement et son utilisation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0200003A2 (fr) * 1985-04-27 1986-11-05 Draiswerke GmbH Mélangeur avec un moulin à pointes
GB2158365A (en) * 1985-05-09 1985-11-13 Littleford Bros Inc Combined mixing, reacting, drying and filtering device
EP0304604A2 (fr) * 1987-08-28 1989-03-01 Gebr. Lödige Maschinenbau Gesellschaft mbH Mélangeur avec agitateur et broyeur
EP0474102A1 (fr) * 1990-09-05 1992-03-11 IMCATEC GmbH Procédé et dispositif pour moudre et mélanger intensivement des matériaux en vrac et/ou des liquides de différente fluidité, densité ou viscosité dans le but d'obtenir des mélanges homogènes
EP0645179A1 (fr) * 1993-09-28 1995-03-29 DRAISWERKE GmbH Moulin à frottement et son utilisation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10012072B4 (de) * 2000-03-14 2015-08-27 Hermann Linden Gmbh & Co. Kg Inline Mischer
US20160351899A1 (en) * 2015-06-01 2016-12-01 Toyota Jidosha Kabushiki Kaisha Device for producing composite active material powder and method for producing composite active material powder
US10297818B2 (en) * 2015-06-01 2019-05-21 Toyota Jidosha Kabushiki Kaisha Device and method for producing composite active material powder using a production device including a rotating body with blades each having a tapered section at an end part thereof on a front side in a rotation/movement direction of the rotating body
EP3702023A3 (fr) * 2019-02-05 2020-11-18 KNIELE GmbH Mélangeur à palier oblique
CN110732257A (zh) * 2019-11-15 2020-01-31 莱芜德正环保科技有限公司 立式危废物料搅拌装置
IT202200024120A1 (it) * 2022-11-23 2024-05-23 Biogas Eng S R L Miscelatore per fermentatori per biogas, e metodo per il suo assemblaggio
WO2024110895A1 (fr) * 2022-11-23 2024-05-30 Biogas Engineering S.R.L. Mélangeur destiné aux fermenteurs de biogaz, et son procédé d'assemblage

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