EP0132263A1 - Melangeuse. - Google Patents

Melangeuse.

Info

Publication number
EP0132263A1
EP0132263A1 EP84900504A EP84900504A EP0132263A1 EP 0132263 A1 EP0132263 A1 EP 0132263A1 EP 84900504 A EP84900504 A EP 84900504A EP 84900504 A EP84900504 A EP 84900504A EP 0132263 A1 EP0132263 A1 EP 0132263A1
Authority
EP
European Patent Office
Prior art keywords
mixing
mixing tool
tool
mixing device
diameter
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
EP84900504A
Other languages
German (de)
English (en)
Other versions
EP0132263B1 (fr
Inventor
Friedrich Walter Dr Herfeld
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0132263A1 publication Critical patent/EP0132263A1/fr
Application granted granted Critical
Publication of EP0132263B1 publication Critical patent/EP0132263B1/fr
Expired 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/84—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with two or more stirrers rotating at different speeds or in opposite directions about the same axis

Definitions

  • the invention relates to a mixing device according to the preamble of claim 1.
  • a mixing device of the type required in the preamble of claim 1 is known from GB-A-1 432 520.
  • the two mixing tools extend right up to the inner wall of the mixing container. Their cross-sectional area - based on a section along the vertical axis of rotation - is approximately the same. Both mixing tools are driven at the same speed, but in the opposite direction.
  • Such a mixing device has a considerable energy requirement and introduces an undesirably large part of the energy in the form of thermal loss work into the mixture, which leads to a strong heating of the mixture with an overall poor mixing effect.
  • the invention is therefore based on the object of designing a mixing device of the type required in the preamble of claim 1 in such a way that the energy requirement is reduced and at the same time the mixing effect is improved.
  • the actual circulation of the material to be mixed is brought about by the lower mixing tool.
  • This circulation of the mixed material is not hindered by the upper mixing tool.
  • This upper mixing tool which is driven at a higher speed than the lower mixing tool and which also has a smaller diameter than the lower mixing tool and is substantially flatter, preferably knife-like, specifically detects nests and agglomerates of the mixed material during its circulating movement . Due to its design, only a small amount of energy is introduced into the mix by the upper mixing tool. In this way, an excellent mixing effect is achieved with less energy to be used. As a result, the mix is not or only slightly warmed during the mixing process.
  • FIG. 1 shows a first exemplary embodiment of a misalignment device according to the invention
  • FIG. 2 shows a top view of the mixing device according to FIG. 1 (with the cover removed), 3 shows a section through a second exemplary embodiment of the invention.
  • the mixing device shown in FIGS. 1 and 2 contains a base 1 on which a support column 2 is arranged.
  • the support column 2 carries a mixing container 3 which is designed as a cylindrical container with a vertical axis.
  • the bottom 4 and the peripheral wall 5 of the mixing container 3 can be double-walled and flowed through by a cooling medium.
  • a lid 6 closes the mixing container 3.
  • a discharge device 7 is used for discharge.
  • An inner agitator shaft 10 which is designed as a hollow shaft, is mounted in the support and guide bearings 8, 9 within the support column 2 and is inserted through the base 4 into the mixing container 3 and carries a lower mixing tool 12 with two mixing blades on a hub 11 .
  • the outer agitator shaft 10 is driven by a drive motor 13 via a bevel gear.
  • the wings of the lower mixing tool 12 run essentially radially in the inner region and are inclined in the outer region against the direction of rotation relative to the radial direction.
  • the lower mixing tool 12 sweeps over the bottom 4 of the mixing container 3.
  • the axial height of the wings of the lower mixing tool 12 decreases towards the outside of the wing.
  • the lower mixing tool 12 is used for uniform circulation of the material to be mixed.
  • the Path 14 of the mixed material is shown schematically in dash-dotted lines in FIG. Of course, this web 14 is also superimposed on a U component.
  • a ⁇ -inner agitator shaft 15 is rotatably driven by a separate drive motor 16 via a drive Riemenan ⁇ .
  • the inner agitator shaft 15 extends through the hub 11 and carries an upper mixing tool 18 on a hub 17, which is formed by two radially arranged knife blades.
  • the diameter of the upper mixing tool 18 is significantly smaller than that of the lower mixing tool 12.
  • the diameter of the circle swept by the upper mixing tool 18 is between 0.25 and 0.8 times, preferably between 0.5 and 0 , 7 times the inner diameter of the mixing container 3.
  • the width of the knife blades forming the upper mixing tool 18 is at least five times greater in the circumferential direction than the height in the axial direction.
  • the cross-sectional area of the upper mixing tool 18 (based on a section along the vertical axis of rotation, see FIG. 1) is at most 1/10 of the cross-sectional area of the lower mixing tool 12.
  • the knife blades of the upper mixing tool 18 have a cutting edge 19 on the front end side in the direction of rotation. Both the lower mixing tool 12 and the upper mixing tool 18 rotate counterclockwise (refer to Fig. 2).
  • the material to be mixed is brought into a uniform, slow circulating movement without excessive energy being introduced into the material to be mixed.
  • the upper mixing tool 18 rotating at a higher speed than the lower mixing tool 12,... Ensures effective detection and comminution of agglomerates and nests of the material to be mixed. Since the knife blades of the upper mixing tool 18 only detect the part of the material to be returned (moving from top to bottom), only a small amount of energy is required to drive the upper mixing tool 18.
  • the upper mixing tool 18 is expediently driven at least twice as fast as the lower mixing tool 12. However, higher speeds are also possible.
  • the circulation movement of the material to be mixed is not impaired by the upper mixing tool 18, but is favored.
  • the energy introduced by the lower mixing tool 12 can be reduced, which eliminates the risk of the mixture being heated undesirably.
  • the mixing device contains a stirring bowl 20 which is attached to a support pin
  • the mixing container 22 sits. This support pin 21 can be swiveled through 180 °, so that the mixing bowl 20 is tilted can.
  • the mixing container 22 is provided with a bottom mounting device 23.
  • the mixing tools already explained namely a lower mixing tool 12 and an upper mixing tool 18, are arranged within the stirring bowl 20.
  • the function of the mixing device corresponds to the exemplary embodiment according to FIGS. 1 and 2.
  • the lower and upper mixing tools 12 and 18 are driven by separate motors 13 and 16, within the scope of the invention it is of course also possible to use a common motor to operate the lower and upper mixing tools. with the interposition of a gear stage, which is preferably designed as a planetary gear.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Mélangeuse avec deux outils mélangeurs (12, 18), le diamètre de l'outil mélangeur supérieur (18) étant plus petit que le diamètre de l'outil mélangeur inférieur (12), l'outil mélangeur supérieur (18) étant essentiellement plus plat et entraîné à une plus grande vitesse de rotation que l'outil mélangeur inférieur (12). Une telle mélangeuse permet, avec une faible dépense d'énergie, d'obtenir un rendement de mélange particulièrement bon sans échauffement inadmissible.
EP84900504A 1983-01-15 1984-01-13 Melangeuse Expired EP0132263B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3301207 1983-01-15
DE19833301207 DE3301207A1 (de) 1983-01-15 1983-01-15 Mischvorrichtung

Publications (2)

Publication Number Publication Date
EP0132263A1 true EP0132263A1 (fr) 1985-01-30
EP0132263B1 EP0132263B1 (fr) 1987-04-08

Family

ID=6188371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84900504A Expired EP0132263B1 (fr) 1983-01-15 1984-01-13 Melangeuse

Country Status (3)

Country Link
EP (1) EP0132263B1 (fr)
DE (2) DE3301207A1 (fr)
WO (1) WO1984002679A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9458876B2 (en) 2013-08-28 2016-10-04 GM Global Technology Operations LLC Elastically deformable alignment fastener and system

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3427344A1 (de) * 1984-07-25 1986-01-30 Alfa-Laval Agrar Gmbh, 2056 Glinde Verfahren und vorrichtung zur erzeugung eines pumpfaehigen gemenges
DE3433674A1 (de) * 1984-09-13 1986-03-20 Friedrich Walter Dr. 5982 Neuenrade Herfeld Mischvorrichtung
DE3433693A1 (de) * 1984-09-13 1986-03-20 Herfeld, Friedrich Walter, Dr., 5982 Neuenrade Mischvorrichtung
DE3529185A1 (de) * 1985-01-25 1986-07-31 Herfeld, Friedrich Walter, Dr., 5982 Neuenrade Mischer
DE3520039C2 (de) * 1985-06-04 1994-09-01 Herfeld Gmbh & Co Kg Dr Verfahren und Vorrichtung zum gleichzeitigen Mischen und Aufheizen von Gut
GB8724786D0 (en) * 1987-10-22 1987-11-25 Giusti & Son Ltd T Rotary mixing apparatus
DE3831609A1 (de) * 1988-09-17 1990-03-22 Loedige Maschbau Gmbh Geb Maschine zum behandeln schuettfaehiger, pastoeser und/oder fliessfaehiger gueter mit eingebauter aufschliessvorrichtung
DE4119033C2 (de) * 1991-06-10 1994-04-21 Thyssen Industrie Kühlmischer für pulver- oder granulatförmige Kunststoffe
US5393141A (en) * 1991-06-10 1995-02-28 Thyssen Industrie Ag Method for operating cooling mixer for bulk material in powder and granular form
DE4217373C2 (de) * 1992-05-26 2003-02-20 Klaus Obermann Gmbh Vorrichtung zur Aufbereitung und Bereitstellung von wenigstens einen flüssigen Bestandteil enthaltenden Mischungen oder Suspensionen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7422965U (de) * 1975-08-21 Krauss Maffei Ag Vorrichtung zum Überführen von Kunststoffabfällen in ein Granulat
DE1216251B (de) * 1962-07-06 1966-05-12 Rheinstahl Henschel Ag Mechanischer Mischer
DE1217755B (de) * 1962-08-04 1966-05-26 Draiswerke Ges Mit Beschraenkt Mahlvorrichtung
DE1244122B (de) * 1964-07-04 1967-07-13 Rheinstahl Henschel Ag Vorrichtung zur gleichzeitigen Durchfuehrung eines geheizten und eines gekuehlten Mischprozesses
NL6504065A (fr) * 1964-07-04 1966-01-05
DE6601810U (de) * 1966-04-13 1969-03-27 Spangenberg Gustav Verfahren u .d vorrichtung zum erwaermung der masse beim aufbereiten von thermoplasten mit hilfsstoffen.
DE2346691A1 (de) * 1973-09-17 1975-03-27 Rheinstahl Ag Vorrichtung zum aufbereiten von pulverfoermigen thermoplastischen kunststoffen
DE8100137U1 (de) * 1981-01-07 1981-07-23 Herfeld, Friedrich Walter, Dr., 5982 Neuenrade Mischer fuer kunststoffzubereitungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8402679A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9458876B2 (en) 2013-08-28 2016-10-04 GM Global Technology Operations LLC Elastically deformable alignment fastener and system

Also Published As

Publication number Publication date
EP0132263B1 (fr) 1987-04-08
DE3301207A1 (de) 1984-07-19
DE3463013D1 (en) 1987-05-14
WO1984002679A1 (fr) 1984-07-19

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