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EP1121193B1 - Compulsory mixer used, in particular, as a cement mixer - Google Patents

Compulsory mixer used, in particular, as a cement mixer Download PDF

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Publication number
EP1121193B1
EP1121193B1 EP00969349A EP00969349A EP1121193B1 EP 1121193 B1 EP1121193 B1 EP 1121193B1 EP 00969349 A EP00969349 A EP 00969349A EP 00969349 A EP00969349 A EP 00969349A EP 1121193 B1 EP1121193 B1 EP 1121193B1
Authority
EP
European Patent Office
Prior art keywords
mixing
agitator
compulsory mixer
mixer according
screw
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 - Lifetime
Application number
EP00969349A
Other languages
German (de)
French (fr)
Other versions
EP1121193A1 (en
Inventor
Harald Kniele
Alexander Kniele
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
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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
    • B01F27/09—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
    • 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
    • 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
    • B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • B01F27/921—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle
    • B01F27/9211—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle the helices being surrounded by a guiding tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/0806—Details; Accessories
    • B28C5/0818—Charging or discharging gates or chutes; Sealing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/16—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a vertical or steeply inclined axis
    • B28C5/166—Pan-type mixers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S366/00—Agitating
    • Y10S366/601—Motor control

Definitions

  • the invention relates to a positive mixer for production of mixtures of liquid, powdery and granular Components such as Concrete mixtures.
  • Such a mixer is known from DE 31 10 437 A.
  • the outer agitator is designed as a worm gear, which in a movement encircling the mixer vessel wall is transferred.
  • the inner and outer mixer screw promote upwards.
  • EP 0 796 708 describes a mixer with an inner and described an external agitator. While that as Worm gear trained internal agitator the mix Conveying upwards, it is the job of the outer agitator forming coulters, the mix in the outer area of the Convey mixing container down and to the middle. in this connection the outer agitator is slower Rotation speed, but in the same direction as that to let the inner agitator circulate. Because the direction of rotation the outer agitator does not change during the mixing process, however, unmixed material can last for a long time Period before the coulters are pushed in and out for this reason are only slowly worked on.
  • the object of the invention is a mixer of the type described Way of creating, especially as a concrete mixer is suitable and with the unmixed material which is pushed in front of the coulters, is mixed in narrowly.
  • the external agitator becomes intermittent first in one direction of rotation and then in the other Direction of rotation alternately moved. This ensures that unmixed Material pushed in front of the coulters is mixed in quickly.
  • An internal agitator 2 in is in a funnel-shaped mixing container the central axis 3 of the mixing container 1 attached that from a shaft 4 and a cylindrical or attached thereto conical screw 5 or helically arranged wings consists.
  • This agitator 2 extends directly to the Lock slide 6 and is on the opposite Side driven by a drive 7.
  • An external agitator with mixing arms 8 and attached blades 9, which the coat the surface of the mixing container 1 touched by the mix, is mounted coaxially to agitator 2 and by the drive 10 driven. Both drives 7 and 10 can also are infinitely variable.
  • the Drives 7 and 10 and the mixing container 1 are on one Support structure 11 attached, which in turn rigid or over rubber-elastic pads 12 is connected to the system 13, if a vibrator 14 is used on the mixing container 1 should.
  • the mixing container is at its outlet end with the help of a Seal 17 and the shutter operated by the actuator 15 6 sealed for transferring the mix a tube or hose 16 is used in the transport container.
  • This embodiment has the advantage that the outer agitator the material in both directions pushes off the wall.
  • the mixing arms 8 are designed that the coulters face the container wall surface Adjust the bottom to the direction of the wall.
  • the mixing arms 8 and the shares 9 are in for this purpose vertical direction and at an angle to the container wall adjustable.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

There is provided a forced mixer for mixing components, comprising a funnel-shaped mixing space having along its center axis (3) a coaxially mounted inner and outer mixing tool, the inner mixing tool (2) consisting of a screw (5) extending toward the outlet slide (6). For the forced mixer to be usable with a high efficency in particular as a concrete mixer, the outer mixing tool (8) comprises mixing shares or scrapers (9) glidingly moving along the mixing container surfaces (1) contacted by the mixed material.

Description

Die Erfindung betrifft einen Zwangsmischer zur Herstellung von Mischungen aus flüssigen, pulverförmigen und körnigen Komponenten wie z.B. Betonmischungen.The invention relates to a positive mixer for production of mixtures of liquid, powdery and granular Components such as Concrete mixtures.

Ein solcher Mischer ist aus der DE 31 10 437 A bekannt. Das äußere Rührwerk ist als Schneckengetriebe ausgebildet, welches in eine rings der Mischerbehälterwandung umlaufende Bewegung versetzt wird. Die innere und die äußere Mischerschnecke fördern aufwärts.Such a mixer is known from DE 31 10 437 A. The outer agitator is designed as a worm gear, which in a movement encircling the mixer vessel wall is transferred. The inner and outer mixer screw promote upwards.

In der EP 0 796 708 wird ein Mischer mit einem inneren und einem äußeren Rührwerk beschrieben. Während das als Schneckengetriebe ausgebildete innere Rührwerk das Mischgut aufwärts fördert, ist es die Aufgabe der das äußere Rührwerk bildenden Mischscharen, das Mischgut im Außenbereich des Mischbehälters nach unten und zur Mitte zu fördern. Hierbei ist vorgesehen, das äußere Rührwerk mit einer langsameren Drehgeschwindigkeit, jedoch der gleichen Drehrichtung wie das innere Rührwerk umlaufen zu lassen. Da sich die Drehrichtung des äußeren Rührwerks während des Mischvorgangs nicht ändert, kann jedoch unvermischtes Material über einen längeren Zeitraum vor den Mischscharen hergeschoben werden und aus diesem Grunde nur langsam untergearbeitet werden.EP 0 796 708 describes a mixer with an inner and described an external agitator. While that as Worm gear trained internal agitator the mix Conveying upwards, it is the job of the outer agitator forming coulters, the mix in the outer area of the Convey mixing container down and to the middle. in this connection the outer agitator is slower Rotation speed, but in the same direction as that to let the inner agitator circulate. Because the direction of rotation the outer agitator does not change during the mixing process, however, unmixed material can last for a long time Period before the coulters are pushed in and out for this reason are only slowly worked on.

Aufgabe der Erfindung ist es, einen Mischer der eingangs beschriebenen Art zu schaffen, der insbesondere als Betonmischer geeignet ist und bei dem unvermischtes Material, welches vor den Mischscharen hergeschoben wird, schmell untergemischt wird.The object of the invention is a mixer of the type described Way of creating, especially as a concrete mixer is suitable and with the unmixed material which is pushed in front of the coulters, is mixed in narrowly.

Diese Aufgabe wird durch einen Zwangsmischer gemäß Anspruch 1 gelöst. Während die Schnecke des inneren Rührwerks das Material nach oben fördert, bewegen die Scharen bzw. Abstreifer des äußeren Rührwerks das Material im wesentlichen horizontal.This object is achieved by a positive mixer according to claim 1. While the snail's inner The agitator conveys the material upwards, they move Coulters or scrapers of the outer agitator make the material essentially horizontal.

Das äußere Rührwerk wird intervallartig zuerst in der einen Drehrichtung und dann in der anderen Drehrichtung wechselnd bewegt. Dadurch wird erreicht, daß unvermischtes Material, welches vor den Scharen hergeschoben wird, schnell untergemischt wird. The external agitator becomes intermittent first in one direction of rotation and then in the other Direction of rotation alternately moved. This ensures that unmixed Material pushed in front of the coulters is mixed in quickly.

Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Developments of the invention are characterized in the subclaims.

Im folgenden werden Ausführungsformen der Erfindung anhand der Figuren beschrieben.In the following, embodiments of the invention are described of the figures.

Von den Figuren zeigen:

Fig. 1
einen Schnitt durch einen Zwangsmischer;
Fig. 2
ein Detail aus Fig. 1 mit einer Schnittdetaildarstellung eines Abstreifers; und
Fig. 3
einen Gang der Schnecke des inneren Rührwerks in Draufsicht bzw. Seitenansicht.
From the figures show:
Fig. 1
a section through a positive mixer;
Fig. 2
a detail of Figure 1 with a sectional detail of a scraper. and
Fig. 3
a gear of the worm of the inner agitator in plan view or side view.

In einem trichterförmigen Mischbehälter ist ein inneres Rührwerk 2 in der Mittelachse 3 des Mischbehälters 1 angebracht, das aus einer Welle 4 und einer daran befestigten zylindrischen oder konischen Schnecke 5 bzw. schneckenförmig angeordneten Flügeln besteht. Dieses Rührwerk 2 reicht unmittelbar an den Verschlußschieber 6 heran und wird an der entgegengesetzten Seite durch einen Antrieb 7 angetrieben. Ein äußeres Rührwerk mit Mischarmen 8 und daran befestigten Schaufeln 9, die die vom Mischgut berührte Fläche des Mischbehälters 1 bestreichen, ist koaxial zu Rührwerk 2 gelagert und durch den Antrieb 10 angetrieben. Beide Antriebe 7 und 10 können auch stufenlos regelbar ausgeführt werden. Die Antriebe 7 und 10 sowie der Mischbehälter 1 sind an einer Tragkonstruktion 11 befestigt, die ihrerseits starr oder über gummielastische Auflagen 12 mit der Anlage 13 verbunden ist, wenn ein Rüttler 14 am Mischbehälter 1 eingesetzt werden soll.An internal agitator 2 in is in a funnel-shaped mixing container the central axis 3 of the mixing container 1 attached that from a shaft 4 and a cylindrical or attached thereto conical screw 5 or helically arranged wings consists. This agitator 2 extends directly to the Lock slide 6 and is on the opposite Side driven by a drive 7. An external agitator with mixing arms 8 and attached blades 9, which the coat the surface of the mixing container 1 touched by the mix, is mounted coaxially to agitator 2 and by the drive 10 driven. Both drives 7 and 10 can also are infinitely variable. The Drives 7 and 10 and the mixing container 1 are on one Support structure 11 attached, which in turn rigid or over rubber-elastic pads 12 is connected to the system 13, if a vibrator 14 is used on the mixing container 1 should.

Der Mischbehälter wird an seinem Auslaufende mit Hilfe einer Dichtung 17 und dem durch Stellelement 15 betätigten Verschlußschieber 6 abgedichtet.Zur Überleitung des Mischgutes in Transportbehälter dient ein Rohr oder Schlauch 16.The mixing container is at its outlet end with the help of a Seal 17 and the shutter operated by the actuator 15 6 sealed for transferring the mix a tube or hose 16 is used in the transport container.

Soweit im obigen die Elemente 9 als Schaufeln bezeichnet werden, ist zu sagen, daß es sich dabei um balkenartige Scharen oder Abstreifer handelt. Aus Fig. 2 ist ein Ausführungsbeispiel ersichtlich, welches zeigt, daß es sich um einen quaderförmigen Körper handelt, der in Umlaufrichtung eine erste wirksame Seitenfläche 20 und auf der entgegengesetzten Umlaufrichtung eine wirksame Fläche 21 aufweist, wobei die beiden Flächen 20 und 21 sich im wesentlichen in radialer Richtung erstrecken.Insofar as the elements 9 are referred to as blades in the above, can be said that these are beam-like droves or wipers. 2 is an embodiment evident, which shows that it is a cuboid Body acts, the first in the direction of rotation effective side surface 20 and in the opposite direction of rotation has an effective area 21, the two Surfaces 20 and 21 are essentially in the radial direction extend.

Diese Ausführungsform hat den Vorteil, daß das äußere Rührwerk in beiden Drehrichtungen das Material von der Wandung abschiebt. Die Mischarme 8 sind so ausgebildet, daß die Schare sich mit ihrer der Behälterwandfläche zugewandten Unterseite der Richtung der Wand anpassen.This embodiment has the advantage that the outer agitator the material in both directions pushes off the wall. The mixing arms 8 are designed that the coulters face the container wall surface Adjust the bottom to the direction of the wall.

Die Mischarme 8 und die Scharen 9 sind zu diesem Zweck in vertikaler Richtung und im Winkel zur Behälterwandung einstellbar.The mixing arms 8 and the shares 9 are in for this purpose vertical direction and at an angle to the container wall adjustable.

Bevorzugt sind an den Schnecken in jeder Schneckenebene zusätzliche Schneidelemente 17 angebracht, die in der Ebene der Schnecke oder wie in Fig. 3 oben angedeutet, gegen die Schneckenebene geneigt, angebracht sein können. Diese Schneidelemente 17 dienen dazu, bei schwierigen Mischprozessen Klumpen des Materials zu zerschlagen und ein homogenes Mischgut entstehen zu lassen.Additional ones are preferred on the screws in each screw plane Cutting elements 17 attached in the plane of Snail or as indicated in Fig. 3 above, against the Screw plane inclined, can be attached. These cutting elements 17 are used for difficult mixing processes Smash lump of material and a homogeneous mix let develop.

Claims (8)

  1. Compulsory mixer for mixing components, having a funnel-shaped mixing space, in the centre axis (3) of which an inner and an outer agitator are attached coaxially, the inner agitator (2) consisting of a screw (5) which extends down to the outlet slide (6), the outer agitator (8) having mixing blades (9) or wipers, characterized in that the mixing blades (9) or wipers sweep the mixing-vessel surfaces (1) with which the mixing material comes into contact, and the outer agitator (8) has a drive (10), by means of which the outer agitator (8) can be driven alternately at intervals between a first direction of rotation and an opposite direction of rotation.
  2. Compulsory mixer according to Claim 1, characterized in that the screw (5) of the inner agitator (2) is of cylindrical design.
  3. Compulsory mixer according to Claim 1, characterized in that the screw (5) of the inner agitator (2) is of conical design, i.e. is designed with a diameter increasing upwards.
  4. Compulsory mixer according to one of Claims 1 to 3, characterized in that the inner agitator is formed from a shaft having flights arranged in a screw shape.
  5. Compulsory mixer according to one of Claims 1 to 4, characterized in that cutting elements (17) are arranged on the screw or the flights (5) arranged one above the other.
  6. Compulsory mixer according to one of Claims 1 to 5, characterized in that the drives of the two agitators are designed with fixed rotational speeds.
  7. Compulsory mixer according to one of Claims 1 to 5, characterized in that the drives of the two agitators are controllable in an infinitely variable manner.
  8. Compulsory mixer according to one of Claims 1 to 7, characterized in that the drives for the agitators are mounted via elastomeric supports and a vibrator (14) is provided on the mixing vessel.
EP00969349A 1999-10-21 2000-09-29 Compulsory mixer used, in particular, as a cement mixer Expired - Lifetime EP1121193B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19950743 1999-10-21
DE19950743A DE19950743A1 (en) 1999-10-21 1999-10-21 Mixer for mixing liquids, powdered and granular components, e.g. for concrete mixing, has inner stirring worm mechanism, outer stirring mechanism with mixing arms with mixing blades
PCT/EP2000/009562 WO2001028672A1 (en) 1999-10-21 2000-09-29 Compulsory mixer used, in particular, as a cement mixer

Publications (2)

Publication Number Publication Date
EP1121193A1 EP1121193A1 (en) 2001-08-08
EP1121193B1 true EP1121193B1 (en) 2002-11-27

Family

ID=7926418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00969349A Expired - Lifetime EP1121193B1 (en) 1999-10-21 2000-09-29 Compulsory mixer used, in particular, as a cement mixer

Country Status (10)

Country Link
US (1) US6390664B1 (en)
EP (1) EP1121193B1 (en)
JP (1) JP3637310B2 (en)
CN (1) CN1148253C (en)
AT (1) ATE228392T1 (en)
DE (2) DE19950743A1 (en)
DK (1) DK1121193T3 (en)
HU (1) HU222902B1 (en)
PL (1) PL348104A1 (en)
WO (1) WO2001028672A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
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DE102007036523A1 (en) * 2007-04-18 2008-10-23 Pemat Mischtechnik Gmbh Mixer e.g. concrete mixer, has mixing unit arranged in upper mixing trough part and another mixing unit arranged in lower mixing trough part, where latter mixing unit is detachably connected with shaft
DE102008060588A1 (en) 2007-12-07 2009-06-10 Pemat Mischtechnik Gmbh mixer
DE102011006636A1 (en) 2011-04-01 2012-10-04 Harald Kniele Pug mill mixer i.e. concrete mixer, for use in construction site for mixing liquid, powdery and/or granular components, has vibrating device coupled to shaft and actuated to simulate shaft for enabling vibration movements
EP2722103A2 (en) 2012-10-19 2014-04-23 Harald Kniele Forced mixer with self-cleaning function and use of air inlets therefor

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EP2722103A2 (en) 2012-10-19 2014-04-23 Harald Kniele Forced mixer with self-cleaning function and use of air inlets therefor

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ATE228392T1 (en) 2002-12-15
DK1121193T3 (en) 2003-03-10
DE50000815D1 (en) 2003-01-09
WO2001028672A1 (en) 2001-04-26
CN1148253C (en) 2004-05-05
EP1121193A1 (en) 2001-08-08
JP3637310B2 (en) 2005-04-13
HUP0104885A2 (en) 2002-04-29
DE50000815C5 (en) 2015-05-21
US6390664B1 (en) 2002-05-21
HUP0104885A3 (en) 2003-02-28
PL348104A1 (en) 2002-05-06
CN1327397A (en) 2001-12-19
DE19950743A1 (en) 2001-04-26
JP2003512151A (en) 2003-04-02
HU222902B1 (en) 2003-12-29

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