EP1676630A1 - Mixing apparatus - Google Patents

Mixing apparatus Download PDF

Info

Publication number
EP1676630A1
EP1676630A1 EP05026162A EP05026162A EP1676630A1 EP 1676630 A1 EP1676630 A1 EP 1676630A1 EP 05026162 A EP05026162 A EP 05026162A EP 05026162 A EP05026162 A EP 05026162A EP 1676630 A1 EP1676630 A1 EP 1676630A1
Authority
EP
European Patent Office
Prior art keywords
mixing device
mixing
shaft
rotation
region
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
EP05026162A
Other languages
German (de)
French (fr)
Other versions
EP1676630B1 (en
Inventor
Hans-Peter Irsch Dipl.-Ing.
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.)
Knauf PFT GmbH and Co KG
Original Assignee
Knauf PFT GmbH and Co KG
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 Knauf PFT GmbH and Co KG filed Critical Knauf PFT GmbH and Co KG
Publication of EP1676630A1 publication Critical patent/EP1676630A1/en
Application granted granted Critical
Publication of EP1676630B1 publication Critical patent/EP1676630B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B28C5/1238—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 for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices
    • B28C5/1292—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 for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices with rotating stirring and feeding or discharging means fixed on the same axis, e.g. in an inclined container fed at its lower part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/53—Mixing liquids with solids using driven stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/54—Mixing liquids with solids wetting solids
    • 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
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
    • B01F27/1921—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements comprising helical elements and paddles
    • 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
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/2123—Shafts with both stirring means and feeding or discharging 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
    • B01F27/62—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis comprising liquid feeding, e.g. spraying 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71775—Feed mechanisms characterised by the means for feeding the components to the mixer using helical screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/28—Mixing cement, mortar, clay, plaster or concrete ingredients
    • 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
    • B01F27/0721—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis parallel 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

Definitions

  • the invention relates to a mixing device for mixing a dry medium, in particular a powder such as mortar, with a liquid, in particular water, which has a housing in which a mixing shaft rotatable about a rotation axis is arranged.
  • Such mixing devices are needed when, for example, mortar powder is to be prepared for use. It is mixed with water to form a ready-to-use mixture.
  • a mixing shaft is arranged in a housing of the mixing device, which is rotated by an electric motor.
  • the mortar powder is thereby first conveyed from a drying zone by means of a conveyor shaft arranged on the mixing shaft in the conveying direction of the device and then mixed in a wet zone with supplied water. After a sufficiently long mixing and conveying section, the finished mixture is conveyed out of the housing at the end of the mixing device.
  • the invention is therefore based on the object, a mixing device of the type mentioned in such a way that it can be handled much easier, which concerns in particular the necessary cleaning measures.
  • the mixing device should therefore be developed so that it can be kept operational with substantially less effort, without having to fear that caking in the interior of the mixing device adversely affect the mixing process.
  • the solution of this object by the invention is characterized in that the mixing shaft has in at least a portion of its axial extent in the region of and concentric with the axis of rotation arranged shaft piece, d. H. that the shaft part is arranged in the axis of rotation, and that the mixing shaft is formed in at least one other region of its axial extent exclusively by at least one connecting element, which is arranged at a radial distance from the axis of rotation.
  • the inner region of the mixing shaft in the particularly critical region is eliminated by being bridged by radially outwardly offset portions. Consequently, in the absence of existing components in the region of the axis of rotation, no more mortar-water mixture can start in the mentioned critical area of the mixing device at the mixing shaft.
  • the bridging to the arranged in the region of the axis of rotation and concentric to the axis of rotation mixing shaft parts is in the critical range
  • the mixing shaft made by radially offset outwardly arranged connecting elements, which represent connecting bracket or connecting webs.
  • the mixing shaft has two shaft pieces, which are arranged in the region of and concentric with the axis of rotation. These two shaft pieces are preferably arranged in the two axial ends of the mixing shaft.
  • a region of the axial extension of the mixing shaft can be formed as a drying zone of the mixing device.
  • a screw conveyor for dry medium, in particular for mortar powder may be arranged.
  • Another region of the axial extension of the mixing shaft may be formed as a wet zone of the mixing device.
  • the at least one connecting element is formed by a bar-like body which is fastened by at least one shaft piece arranged in the region of and concentric with the axis of rotation via at least one carrier element.
  • the at least one connecting element is formed by a bar-like body which is fastened by at least one shaft piece arranged in the region of and concentric with the axis of rotation via at least one carrier element.
  • four bar-like bodies are arranged equidistant around the axis of rotation of the mixing shaft.
  • the at least one bar-like body and / or the at least one carrier element and / or the shaft piece arranged concentrically to the axis of rotation are connected to one another, preferably welded.
  • the reserved area of the back-endangered zone is particularly well recessed when the at least one connecting element is positioned near the wall of the housing.
  • This conveyor element may be formed as a flat plate which is attached to the connecting element, in particular welded, is.
  • the conveying element is arranged at an angle between the surface normal to the plate and the conveying direction of the mixing device; this angle can be between 10 ° and 50 °.
  • the conveying element is arranged radially inwardly on the connecting element.
  • the transition from the one arranged in the region of and concentric with the axis of rotation shaft piece to the radially spaced from the axis of rotation connecting element can be formed by a conveyor coil.
  • the conveyor coil may have an envelope surface with rotation in the conveying direction of the mixing device increasing cross-sectional area during rotation about the axis of rotation. It is particularly thought that the conveyor coil has a conical envelope surface when rotating about the axis of rotation.
  • the housing has, in the region of the delivery helix, a wall corresponding to the envelope surface of the delivery helix.
  • a sufficient delivery rate of the mixing device is present in the section of the mixing shaft in which there is no shaft part arranged concentrically with the axis of rotation.
  • the spiral section which increases in diameter in the conveying direction, ensures that the dry mass (mortar powder) is conducted into the mixing area with sufficient flow rate.
  • the conveying effect in this section of the mixing device could otherwise be too low due to the embodiment according to the invention.
  • the helical section further advantageously ensures that no water from the wet zone is injected back into the drying zone, which otherwise is not precluded by the aforementioned conveying elements on the bar-shaped bodies due to their spraying action could be. By created by the spiral conveying effect can also be prevented that said conveying elements must be formed too large on the beam-like bodies, which could cause the risk that they are provided in their radially inner portion again with caking.
  • a liquid feed is arranged in the housing directly following this.
  • a liquid feed is arranged in the housing directly following this.
  • the wet zone begins the wet zone.
  • the mixing device according to the invention is characterized in that the risk of clumping and caking inside the device is considerably reduced, which reduces the maintenance costs and thus the operating costs of the mixing device.
  • a mortar mixing device is shown in the form of a horizontal mortar flow mixer.
  • a housing 2 a rotatable about an axis of rotation 3 mixing shaft 4 is arranged.
  • the mixing shaft 4 is driven by an electric motor with gear unit 19.
  • the mixing shaft 4 has substantially three axial regions.
  • a first region 5 defines the drying zone of the mixing device 1.
  • the mixing shaft 4 is provided with a screw conveyor 11. From a funnel, not shown, mortar powder passes through a feed opening 20 into the interior of the housing 2 and is conveyed via the screw conveyor 11 in the conveying direction F of the mixing device 1.
  • the mixing shaft has a shaft piece 7, which is arranged coaxially to the axis of rotation and which lies in the region of the axis of rotation 3, that is to say concentrically.
  • the discharge region of the mixing device is characterized by a second region 6 of the axial extension, which is attributable to the wet zone of the mixing device.
  • a coaxial with the axis of rotation 3 arranged shaft 8 is provided, which lies in the region of the axis of rotation 3.
  • a liquid inlet 18 is arranged. This is a hole in the housing 2, can be passed through the water into the interior of the housing 2. From this axial position, the wet zone of the mixing device begins, whereby especially the transition from the dry to the wet zone is subject to a high risk of agglomeration and caking. Therefore, the subsequent third region 9 of the axial extent of the mixing shaft 4 is formed as follows: In the area 9 there is no component positioned in the area of the axis of rotation 3. Instead, the transition from the shaft piece 7 to the shaft piece 8 is produced by four connecting elements 10 arranged equidistantly around the circumference of the mixing shaft 4. These are shown in FIG 2 as elements 10 ', 10'',10''' and 10 "" located. The elements 10 ', 10 ", 10''' and 10 '''' represent bridge-like connections between the two shaft parts 7 and 8.
  • Each connecting element 10 ', 10 ", 10"', 10 “” is formed from a bar-like body 12 ', 12 “, 12"' and 12 "", which is spaced from the axis of rotation 3 at a radial distance r 8, the beam-like bodies 12 ', 12 “, 12”' and 12 “” are fastened via support elements 13 ', 13 ", 13"' and 13 ".”
  • the support element 14 for fastening the beam-like bodies 12 ', 12 “ , 12 '' 'and 12 "” on the shaft piece 7 is, however, formed by a delivery helix, i. H. the bar-like bodies 12 ', 12 ", 12"' and 12 “” are welded to the conveyor coil 14.
  • the beam-like bodies 12 ', 12 ", 12' '', 12 '' '' are in close proximity to the wall 15 of the housing 2 so as to be widely spaced from the (central) area. in the clumping or caking are to be feared.
  • the eligibility of the mixing device in the transition region from the first region 8 to the third region 9 of the axial extent of the mixing shaft 4, ie from the dry zone to the wet zone, is improved by the conveyor spiral 14, which increases radially in the conveying direction (see FIG.
  • the wall 17 of the housing 2 is formed conically in this area and adapted to the envelope of the conveyor spiral during its rotation.
  • the conveying capacity of the connecting elements 10 ', 10 ", 10"', 10 "' is increased by mounting on each bar-like body 12', 12", 12 "', 12”"a conveying element 16 in the form of a plate ( welded) is.
  • the plate 16 is oriented at an angle ⁇ , ie an angle between the surface normal N to the plate 16 and the conveying direction F is preferably between 10 ° and 50 °.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

The mixing device (1) has a fluid e.g. water in a casing (2). A mixing shaft (4), rotatable on rotary axis (3), is arranged on the casing having shaft piece (7,8), which is concentric to rotary axis, in the area (5,6) of its axial reach. The mixing shaft is formed, in another area (9) of its axial reach, exclusively by a connecting element (10), which is arranged with a radial gap (r) from the rotary axis.

Description

Die Erfindung betrifft eine Mischvorrichtung zum Mischen eines trockenen Mediums, insbesondere eines Pulvers wie Mörtel, mit einer Flüssigkeit, insbesondere Wasser, die ein Gehäuse aufweist, in dem eine um eine Drehachse drehbare Mischwelle angeordnet ist.The invention relates to a mixing device for mixing a dry medium, in particular a powder such as mortar, with a liquid, in particular water, which has a housing in which a mixing shaft rotatable about a rotation axis is arranged.

Derartige Mischvorrichtungen werden benötigt, wenn beispielsweise Mörtelpulver zum Gebrauch aufbereitet werden soll. Dabei wird es mit Wasser gemischt, so dass eine gebrauchsfertige Mischung entsteht. Um der Mörtelmischung eine gute Verarbeitungsqualität zu verleihen, ist es notwendig, das sich bildende Mörtel-Wasser-Gemisch gut durchzurühren. Hierfür ist in einem Gehäuse der Mischvorrichtung eine Mischwelle angeordnet, die von einem Elektromotor gedreht wird. Das Mörtelpulver wird dadurch zunächst aus einer Trockenzone mittels einer auf der Mischwelle angeordneten Förderschnecke in Förderrichtung der Vorrichtung gefördert und dann in einer Nasszone mit zugeführtem Wasser vermischt. Nach einer hinreichend langen Misch- und Förderstrecke wird das fertige Gemisch am Ende der Mischvorrichtung aus dem Gehäuse herausgefördert.Such mixing devices are needed when, for example, mortar powder is to be prepared for use. It is mixed with water to form a ready-to-use mixture. In order to give the mortar mixture a good processing quality, it is necessary to thoroughly stir the forming mortar-water mixture. For this purpose, a mixing shaft is arranged in a housing of the mixing device, which is rotated by an electric motor. The mortar powder is thereby first conveyed from a drying zone by means of a conveyor shaft arranged on the mixing shaft in the conveying direction of the device and then mixed in a wet zone with supplied water. After a sufficiently long mixing and conveying section, the finished mixture is conveyed out of the housing at the end of the mixing device.

Im Laufe der Zeit setzt sich bei Benutzung der Mischvorrichtung im besonders kritischen Bereich des Übergangs von der Trocken- zur Nasszone bzw. im Anfangsbereich der Mischzone nicht hinreichend mit Wasser verbundenes Mörtelpulver an. Es kommt daher dort zu einer Klumpenbildung und zu einem Anbacken des Pulver-Wasser-Gemisches an der Mischwelle. Die anbackende Masse wächst dabei von innen nach außen auf der Mischwelle an. Daher ist es sehr wichtig, dass die Mischwelle der Mischvorrichtung regelmäßig gereinigt wird. Dies hat zumeist täglich zu erfolgen, was einen entsprechend hohen Aufwand darstellt, der Kosten verursacht. Die bei bekannten Mischvorrichtungen erforderliche Reinigung derselben stellt also eine aufwändige und teure Maßnahme dar, die jedoch zur Aufrechterhaltung einer guten Wirkungsweise der Vorrichtung unerlässlich ist.Over time, when the mixing device is used, mortar powder which is not sufficiently connected to water in the particularly critical region of the transition from the dry zone to the wet zone or in the initial zone of the mixing zone is established. It therefore comes to a lumping and caking of the powder-water mixture at the mixing shaft. The caking mass grows from the inside to the outside on the mixing shaft. That's why it's so important that the mixing shaft of the mixing device is cleaned regularly. This usually has to be done daily, which is a correspondingly high cost, which causes costs. The cleaning of the same required in known mixing devices thus represents a complex and expensive measure, which, however, is essential for maintaining a good mode of operation of the device.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Mischvorrichtung der eingangs genannten Art so auszubilden, dass sie wesentlich einfacher gehandhabt werden kann, was insbesondere die erforderlichen Reinigungsmaßnahmen anbelangt. Die Mischvorrichtung soll also so weitergebildet werden, dass sie mit wesentlich weniger Aufwand betriebsbereit gehalten werden kann, ohne befürchten zu müssen, dass sich Anbackungen im Inneren der Mischvorrichtung negativ auf den Mischprozess auswirken.The invention is therefore based on the object, a mixing device of the type mentioned in such a way that it can be handled much easier, which concerns in particular the necessary cleaning measures. The mixing device should therefore be developed so that it can be kept operational with substantially less effort, without having to fear that caking in the interior of the mixing device adversely affect the mixing process.

Die Lösung dieser Aufgabe durch die Erfindung ist dadurch gekennzeichnet, dass die Mischwelle in zumindest einem Bereich ihrer axialen Erstreckung ein im Bereich der und konzentrisch zur Drehachse angeordnetes Wellenstück aufweist, d. h. dass das Wellenteil in der Drehachse angeordnet ist, und dass die Mischwelle in zumindest einem anderen Bereich ihrer axialen Erstreckung ausschließlich durch mindestens ein Verbindungselement gebildet wird, das mit radialem Abstand zur Drehachse angeordnet ist.The solution of this object by the invention is characterized in that the mixing shaft has in at least a portion of its axial extent in the region of and concentric with the axis of rotation arranged shaft piece, d. H. that the shaft part is arranged in the axis of rotation, and that the mixing shaft is formed in at least one other region of its axial extent exclusively by at least one connecting element, which is arranged at a radial distance from the axis of rotation.

Gemäß der Erfindung wird also der innen liegende Bereich der Mischwelle in dem besonders kritischen Bereich dadurch eliminiert, dass er durch radial nach außen versetzte Abschnitte überbrückt wird. Folglich kann sich mangels vorhandener Bauelemente im Bereich der Drehachse kein Mörtel-Wasser-Gemisch mehr im genannten kritischen Bereich der Mischvorrichtung an der Mischwelle ansetzen. Die Überbrückung zu den im Bereich der Drehachse und konzentrisch zur Drehachse angeordneten Mischwellenteile wird in dem kritischen Bereich der Mischwelle also durch radial nach außen versetzt angeordnete Verbindungselemente hergestellt, die Verbindungsbügel bzw. Verbindungsstege darstellen.According to the invention, therefore, the inner region of the mixing shaft in the particularly critical region is eliminated by being bridged by radially outwardly offset portions. Consequently, in the absence of existing components in the region of the axis of rotation, no more mortar-water mixture can start in the mentioned critical area of the mixing device at the mixing shaft. The bridging to the arranged in the region of the axis of rotation and concentric to the axis of rotation mixing shaft parts is in the critical range Thus, the mixing shaft made by radially offset outwardly arranged connecting elements, which represent connecting bracket or connecting webs.

Eine erste Weiterbildung sieht vor, dass die Mischwelle zwei Wellenstücke aufweist, die im Bereich der und konzentrisch zur Drehachse angeordnet sind. Diese beiden Wellenstücke sind bevorzugt in den beiden axialen Enden der Mischwelle angeordnet. Ein Bereich der axialen Erstreckung der Mischwelle kann dabei als Trockenzone der Mischvorrichtung ausgebildet sein. In dem Bereich der axialen Erstreckung der Mischwelle, die die Trockenzone darstellt, kann eine Förderschnecke für trockenes Mediums, insbesondere für Mörtelpulver, angeordnet sein. Ein anderer Bereich der axialen Erstreckung der Mischwelle kann als Nasszone der Mischvorrichtung ausgebildet sein.A first development provides that the mixing shaft has two shaft pieces, which are arranged in the region of and concentric with the axis of rotation. These two shaft pieces are preferably arranged in the two axial ends of the mixing shaft. A region of the axial extension of the mixing shaft can be formed as a drying zone of the mixing device. In the region of the axial extent of the mixing shaft, which represents the drying zone, a screw conveyor for dry medium, in particular for mortar powder, may be arranged. Another region of the axial extension of the mixing shaft may be formed as a wet zone of the mixing device.

Bevorzugt wird das mindestens eine Verbindungselement durch einen balkenartigen Körper gebildet, der von mindestens einem am im Bereich der und konzentrisch zur Drehachse angeordneten Wellenstück über mindestens ein Trägerelement befestigt ist. Für eine gute Durchmischung ist besonders bevorzugt vorgesehen, dass vier balkenartige Körper äquidistant um die Drehachse der Mischwelle herum angeordnet sind.Preferably, the at least one connecting element is formed by a bar-like body which is fastened by at least one shaft piece arranged in the region of and concentric with the axis of rotation via at least one carrier element. For a good mixing it is particularly preferred that four bar-like bodies are arranged equidistant around the axis of rotation of the mixing shaft.

Mit Vorteil sind der mindestens eine balkenartige Körper und/oder das mindestens eine Trägerelement und/oder das konzentrisch zur Drehachse angeordnete Wellenstück miteinander verbunden, vorzugsweise verschweißt.Advantageously, the at least one bar-like body and / or the at least one carrier element and / or the shaft piece arranged concentrically to the axis of rotation are connected to one another, preferably welded.

Der freigehaltene Bereich der anback-gefährdeten Zone wird besonders gut ausgespart, wenn das mindestens eine Verbindungselement nahe der Wand des Gehäuses positioniert ist.The reserved area of the back-endangered zone is particularly well recessed when the at least one connecting element is positioned near the wall of the housing.

Die Fähigkeit zu einer guten Durchmischung und eine hohe Förderleistung der Mischvorrichtung wird dadurch verbessert bzw. erreicht, dass an dem mindestens einen Verbindungselement mindestens ein Förderelement angeordnet wird. Dieses Förderelement kann als ebene Platte ausgebildet sein, die an dem Verbindungselement befestigt, insbesondere angeschweißt, ist. Mit Vorteil ist das Förderelement unter einem Winkel zwischen der Oberflächennormalen auf die Platte und der Förderrichtung der Mischvorrichtung angeordnet; dieser Winkel kann zwischen 10° und 50° betragen. Bevorzugt ist das Förderelement radial innenliegend an dem Verbindungselement angeordnet.The ability to a good mixing and a high flow rate of the mixing device is thereby improved or achieved that at the at least a connecting element at least one conveying element is arranged. This conveyor element may be formed as a flat plate which is attached to the connecting element, in particular welded, is. Advantageously, the conveying element is arranged at an angle between the surface normal to the plate and the conveying direction of the mixing device; this angle can be between 10 ° and 50 °. Preferably, the conveying element is arranged radially inwardly on the connecting element.

Der Übergang von dem einen im Bereich der und konzentrisch zur Drehachse angeordneten Wellenstück zu dem mit radialem Abstand zur Drehachse angeordneten Verbindungselement kann durch eine Förderwendel gebildet werden. Die Förderwendel kann bei Rotation um die Drehachse eine Hüllfläche mit in Förderrichtung der Mischvorrichtung zunehmender Querschnittsfläche aufweisen. Dabei ist besonders daran gedacht, dass die Förderwendel bei Rotation um die Drehachse eine kegelförmige Hüllfläche aufweist. Das Gehäuse weist im Bereich der Förderwendel eine zur Hüllfläche der Förderwendel korrespondierend ausgeformte Wand auf.The transition from the one arranged in the region of and concentric with the axis of rotation shaft piece to the radially spaced from the axis of rotation connecting element can be formed by a conveyor coil. The conveyor coil may have an envelope surface with rotation in the conveying direction of the mixing device increasing cross-sectional area during rotation about the axis of rotation. It is particularly thought that the conveyor coil has a conical envelope surface when rotating about the axis of rotation. The housing has, in the region of the delivery helix, a wall corresponding to the envelope surface of the delivery helix.

Durch diese bevorzugte Ausbildung des Übergangs von der Trocken- zur Nass- bzw. Mischzone wird erreicht, dass in dem Abschnitt der Mischwelle, in der kein im Bereich der Drehachse und konzentrisch zu dieser angeordnetes Wellenteil existiert, eine hinreichende Förderleistung der Mischvorrichtung vorliegt. Der sich in Förderrichtung spiralförmig im Durchmesser vergrößernde Wendelabschnitt stellt sicher, dass die Trockenmasse (Mörtelpulver) mit hinreichendem Fördervolumenstrom in den Mischbereich geleitet wird. Die Förderwirkung in diesem Abschnitt der Mischvorrichtung könnte ansonsten durch die erfindungsgemäße Ausgestaltung zu gering ausfallen. Der Wendelabschnitt stellt weiterhin in vorteilhafter Weise sicher, dass kein Wasser aus der Nasszone in die Trockenzone zurückspritzt, was ansonsten durch die erwähnten Förderelemente an den balkenförmigen Körpern durch deren Spritzwirkung nicht ausgeschlossen werden könnte. Durch die durch die Wendel geschaffene Förderwirkung kann ferner verhindert werden, dass die genannten Förderelemente an den balkenartigen Körpern zu groß ausgebildet werden müssen, wodurch die Gefahr bestehen könnte, dass sie in ihrem radial innenliegenden Abschnitt wieder mit Anbackungen versehen werden.As a result of this preferred embodiment of the transition from the dry zone to the wet zone or mixing zone, it is achieved that a sufficient delivery rate of the mixing device is present in the section of the mixing shaft in which there is no shaft part arranged concentrically with the axis of rotation. The spiral section, which increases in diameter in the conveying direction, ensures that the dry mass (mortar powder) is conducted into the mixing area with sufficient flow rate. The conveying effect in this section of the mixing device could otherwise be too low due to the embodiment according to the invention. The helical section further advantageously ensures that no water from the wet zone is injected back into the drying zone, which otherwise is not precluded by the aforementioned conveying elements on the bar-shaped bodies due to their spraying action could be. By created by the spiral conveying effect can also be prevented that said conveying elements must be formed too large on the beam-like bodies, which could cause the risk that they are provided in their radially inner portion again with caking.

Bevorzugt ist im Bereich der zur Wendel korrespondierend ausgeformten Wand oder in Förderrichtung der Mischvorrichtung unmittelbar auf diesen folgend ein Flüssigkeitszulauf im Gehäuse angeordnet. Hier beginnt dann also die Nasszone.Preferably, in the region of the wall corresponding to the helix, or in the conveying direction of the mixing device, a liquid feed is arranged in the housing directly following this. Here then begins the wet zone.

Die erfindungsgemäße Mischvorrichtung zeichnet sich dadurch aus, dass die Gefahr von Verklumpungen und Anbackungen im Inneren der Vorrichtung erheblich reduziert ist, was die Instandhaltungsaufwendungen und damit die Betriebskosten der Mischvorrichtung reduzieren.The mixing device according to the invention is characterized in that the risk of clumping and caking inside the device is considerably reduced, which reduces the maintenance costs and thus the operating costs of the mixing device.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:

FIG 1
die Seitenansicht einer Mörtel-Mischvorrichtung im Schnitt und
FIG 2
in perspektivischer Ansicht schematisch die Mischwelle der Mörtel-Mischvorrichtung nach FIG 1.
In the drawing, an embodiment of the invention is shown. Show it:
FIG. 1
the side view of a mortar mixing device in section and
FIG. 2
in a perspective view schematically the mixing shaft of the mortar mixing device according to FIG. 1

In FIG 1 ist eine Mörtel-Mischvorrichtung in Form eines horizontalen Mörteldurchlaufmischers dargestellt. In einem Gehäuse 2 ist eine um eine Drehachse 3 drehbare Mischwelle 4 angeordnet. Die Mischwelle 4 wird von einem Elektromotor mit Getriebeeinheit 19 angetrieben.In FIG 1, a mortar mixing device is shown in the form of a horizontal mortar flow mixer. In a housing 2 a rotatable about an axis of rotation 3 mixing shaft 4 is arranged. The mixing shaft 4 is driven by an electric motor with gear unit 19.

Die Mischwelle 4 weist im wesentlichen drei axiale Bereiche auf. Ein erster Bereich 5 definiert die Trockenzone der Mischvorrichtung 1. In diesem Bereich ist die Mischwelle 4 mit einer Förderschnecke 11 versehen. Aus einem nicht dargestellten Trichter gelangt Mörtelpulver über eine Zuführöffnung 20 in das Innere des Gehäuses 2 und wird über die Förderschnecke 11 in Förderrichtung F der Mischvorrichtung 1 gefördert. Im Bereich 5 weist die Mischwelle ein koaxial zur Drehachse angeordnetes Wellenstück 7 auf, das im Bereich der Drehachse 3, also zentrisch, liegt.The mixing shaft 4 has substantially three axial regions. A first region 5 defines the drying zone of the mixing device 1. In this area, the mixing shaft 4 is provided with a screw conveyor 11. From a funnel, not shown, mortar powder passes through a feed opening 20 into the interior of the housing 2 and is conveyed via the screw conveyor 11 in the conveying direction F of the mixing device 1. In region 5, the mixing shaft has a shaft piece 7, which is arranged coaxially to the axis of rotation and which lies in the region of the axis of rotation 3, that is to say concentrically.

Der Austragbereich der Mischvorrichtung ist durch einen zweiten Bereich 6 der axialen Erstreckung gekennzeichnet, der der Nasszone der Mischvorrichtung zuzurechnen ist. Auch hier ist ein koaxial zur Drehachse 3 angeordnetes Wellenstück 8 vorgesehen, das im Bereich der Drehachse 3 liegt. Bei Drehung der Mischwelle 4 wird über Förderschaufeln 21 mit Wasser vermischter Mörtel zu einer Austragöffnung 22 gefördert und von dort entnommen.The discharge region of the mixing device is characterized by a second region 6 of the axial extension, which is attributable to the wet zone of the mixing device. Again, a coaxial with the axis of rotation 3 arranged shaft 8 is provided, which lies in the region of the axis of rotation 3. When the mixing shaft 4 is rotated, mortar mixed with water is conveyed via conveying blades 21 to a discharge opening 22 and removed therefrom.

Etwa in der Mitte der axialen Erstreckung der Mischvorrichtung 1 ist ein Flüssigkeitszulauf 18 angeordnet. Es handelt sich hierbei um eine Bohrung im Gehäuse 2, über die Wasser ins Innere des Gehäuses 2 geleitet werden kann. Ab dieser axialen Position beginnt die Nasszone der Mischvorrichtung, wobei besonders der Übergang von der Trocken- zur Nasszone einer hohen Gefahr von Verklumpung und Anbackungen unterliegt. Daher ist der sich anschießende dritte Bereich 9 der axialen Erstreckung der Mischwelle 4 wie folgt ausgebildet:
Im Bereich 9 existiert kein im Bereich der Drehachse 3 positioniertes Bauteil. Vielmehr wird der Übergang vom Wellenstück 7 zum Wellenstück 8 durch vier äquidistant um den Umfang der Mischwelle 4 angeordnete Verbindungselemente 10 hergestellt. Diese sind in FIG 2 als Elemente 10', 10'', 10''' und 10"" eingezeichnet. Die Elemente 10', 10", 10''' und 10'''' stellen brückenartige Verbindungen zwischen den beiden Wellenteilen 7 und 8 dar.Approximately in the middle of the axial extent of the mixing device 1, a liquid inlet 18 is arranged. This is a hole in the housing 2, can be passed through the water into the interior of the housing 2. From this axial position, the wet zone of the mixing device begins, whereby especially the transition from the dry to the wet zone is subject to a high risk of agglomeration and caking. Therefore, the subsequent third region 9 of the axial extent of the mixing shaft 4 is formed as follows:
In the area 9 there is no component positioned in the area of the axis of rotation 3. Instead, the transition from the shaft piece 7 to the shaft piece 8 is produced by four connecting elements 10 arranged equidistantly around the circumference of the mixing shaft 4. These are shown in FIG 2 as elements 10 ', 10'',10''' and 10 "" located. The elements 10 ', 10 ", 10''' and 10 '''' represent bridge-like connections between the two shaft parts 7 and 8.

Jedes Verbindungselement 10', 10", 10"', 10"" wird aus einem balkenartigen Körper 12', 12", 12''' und 12"" gebildet, der mit radialem Abstand r von der Drehachse 3 beabstandet ist. Am Wellenstück 8 sind die balkenartigen Körper 12', 12", 12''' und 12"" über Trägerelemente 13', 13", 13''' und 13"" befestigt. Das Trägerelement 14 zur Befestigung der balkenartigen Körper 12', 12", 12''' und 12"" am Wellenstück 7 wird indes durch eine Förderwendel gebildet, d. h. die balkenartigen Körper 12', 12", 12''' und 12"" sind an der Förderwendel 14 angeschweißt.Each connecting element 10 ', 10 ", 10"', 10 "" is formed from a bar-like body 12 ', 12 ", 12"' and 12 "", which is spaced from the axis of rotation 3 at a radial distance r 8, the beam-like bodies 12 ', 12 ", 12"' and 12 "" are fastened via support elements 13 ', 13 ", 13"' and 13 "." The support element 14 for fastening the beam-like bodies 12 ', 12 " , 12 '' 'and 12 "" on the shaft piece 7 is, however, formed by a delivery helix, i. H. the bar-like bodies 12 ', 12 ", 12"' and 12 "" are welded to the conveyor coil 14.

Wie weiter zu sehen ist, befinden sich die balkenartigen Körper 12', 12", 12''', 12'''' in unmittelbarer Nähe zur Wand 15 des Gehäuses 2, so dass sie weit von dem (zentralen) Bereich beabstandet sind, in dem Verklumpungen bzw. Aufbackungen zu befürchten sind.As further seen, the beam-like bodies 12 ', 12 ", 12' '', 12 '' '' are in close proximity to the wall 15 of the housing 2 so as to be widely spaced from the (central) area. in the clumping or caking are to be feared.

Die Förderfähigkeit der Mischvorrichtung im Übergangsbereich vom ersten Bereich 8 zum dritten Bereich 9 der axialen Erstreckung der Mischwelle 4, also von der Trocken- in die Nasszone, wird durch die Förderwendel 14 verbessert, die sich in Förderrichtung radial vergrößert (s. FIG 1). Die Wand 17 des Gehäuses 2 ist in diesem Bereich kegelförmig ausgebildet und der Hüllkurve der Förderwendel bei deren Rotation angepasst.The eligibility of the mixing device in the transition region from the first region 8 to the third region 9 of the axial extent of the mixing shaft 4, ie from the dry zone to the wet zone, is improved by the conveyor spiral 14, which increases radially in the conveying direction (see FIG. The wall 17 of the housing 2 is formed conically in this area and adapted to the envelope of the conveyor spiral during its rotation.

Die Förderfähigkeit der Verbindungselemente 10', 10", 10"', 10'''' wird dadurch erhöht, dass an jedem balkenartigen Körper 12', 12", 12"', 12"" ein Förderelement 16 in Form einer Platte angebracht (angeschweißt) ist. Wie FIG 2 entnommen werden kann, ist die Platte 16 dabei unter einem Winkel α ausgerichtet, d. h. zwischen der Oberflächennormalen N auf die Platte 16 und der Förderrichtung F wird ein Winkel eingeschlossen, der vorzugsweise zwischen 10° und 50° beträgt.The conveying capacity of the connecting elements 10 ', 10 ", 10"', 10 "'is increased by mounting on each bar-like body 12', 12", 12 "', 12""a conveying element 16 in the form of a plate ( welded) is. As can be seen from FIG. 2, the plate 16 is oriented at an angle α, ie an angle between the surface normal N to the plate 16 and the conveying direction F is preferably between 10 ° and 50 °.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Mischvorrichtungmixing device
22
Gehäusecasing
33
Drehachseaxis of rotation
44
Mischwellemixing shaft
55
erster Bereich der axialen Erstreckungfirst area of the axial extent
66
zweiter Bereich der axialen Erstreckungsecond region of the axial extent
77
Wellenstückshaft piece
88th
Wellenstückshaft piece
99
dritter Bereich der axialen Erstreckungthird area of the axial extent
10'10 '
Verbindungselementconnecting element
10"10 "
Verbindungselementconnecting element
10'''10 '' '
Verbindungselementconnecting element
10""10 ""
Verbindungselementconnecting element
1111
FörderschneckeAuger
12'12 '
balkenartiger Körperbar-like body
12"12 "
balkenartiger Körperbar-like body
12'''12 '' '
balkenartiger Körperbar-like body
12""12 ""
balkenartiger Körperbar-like body
13'13 '
Trägerelementsupport element
13"13 "
Trägerelementsupport element
13'''13 '' '
Trägerelementsupport element
13""13 ""
Trägerelementsupport element
1414
Trägerelement, FörderwendelCarrier element, conveyor spiral
1515
Wand des GehäusesWall of the housing
1616
Förderelementimpeller
1717
kegelförmige Wand des Gehäusesconical wall of the housing
1818
Flüssigkeitszulaufliquid inlet
1919
Elektromotor mit GetriebeeinheitElectric motor with gear unit
2020
Zuführöffnungfeed
2121
Förderschaufelimpeller blade
2222
Austragöffnungdischarge
rr
radialer Abstandradial distance
αα
Winkelangle
NN
Oberflächennormalesurface normal
FF
Förderrichtungconveying direction

Claims (13)

Mischvorrichtung (1) zum Mischen eines trockenen Mediums, insbesondere eines Pulvers, mit einer Flüssigkeit, insbesondere Wasser, die ein Gehäuse (2) aufweist, in dem eine um eine Drehachse (3) drehbare Mischwelle (4) angeordnet ist,
dadurch gekennzeichnet,
dass die Mischwelle (4) in zumindest einem Bereich (5, 6) ihrer axialen Erstreckung ein im Bereich der und konzentrisch zur Drehachse (3) angeordnetes Wellenstück (7, 8) aufweist und dass die Mischwelle (4) in zumindest einem anderen Bereich (9) ihrer axialen Erstreckung ausschließlich durch mindestens ein Verbindungselement (10', 10", 10"', 10"") gebildet wird, das mit radialem Abstand (r) zur Drehachse (3) angeordnet ist.Mixing device (1) for mixing a dry medium, in particular a powder, with a liquid, in particular water, which has a housing (2) in which a mixing shaft (4) rotatable about an axis of rotation (3) is arranged,
characterized,
that the mixing shaft (4) in at least one region (5, 6) of its axial extent a (7, 8) and in the area of and arranged concentrically to the rotation axis (3) shaft piece that the mixing shaft (4) in at least one other region ( 9) of its axial extension exclusively by at least one connecting element (10 ', 10 ", 10"', 10 "") is formed, which is arranged at a radial distance (r) to the axis of rotation (3). Mischvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Mischwelle (4) zwei Wellenstücke (7, 8) aufweist, die im Bereich der und konzentrisch zur Drehachse (3) angeordnet sind.Mixing device according to claim 1, characterized in that the mixing shaft (4) has two shaft pieces (7, 8), which are arranged in the region of and concentric with the axis of rotation (3). Mischvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die beiden im Bereich der und konzentrisch zur Drehachse (3) angeordneten Wellenstücke (7, 8) in den beiden axialen Enden der Mischwelle (4) angeordnet sind.Mixing device according to claim 2, characterized in that the two in the region of and concentric with the axis of rotation (3) arranged shaft pieces (7, 8) in the two axial ends of the mixing shaft (4) are arranged. Mischvorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass ein Bereich (5) der axialen Erstreckung der Mischwelle (4) als Trockenzone der Mischvorrichtung (1) ausgebildet ist und/oder dass ein Bereich (6) der axialen Erstreckung der Mischwelle (4) als Nasszone der Mischvorrichtung (1) ausgebildet ist.Mixing device according to claim 2 or 3, characterized in that a region (5) of the axial extension of the mixing shaft (4) is formed as a drying zone of the mixing device (1) and / or that a region (6) of the axial extension of the mixing shaft (4). is designed as a wet zone of the mixing device (1). Mischvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass in dem Bereich (5) der axialen Erstreckung der Mischwelle (4) eine Förderschnecke (11) für trockenes Medium angeordnet ist.Mixing device according to claim 4, characterized in that in the region (5) of the axial extension of the mixing shaft (4) a conveyor screw (11) for dry medium is arranged. Mischvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das mindestens eine Verbindungselement (10', 10", 10"', 10"") durch einen balkenartigen Körper (12', 12", 12"', 12"") gebildet wird, der von mindestens einem am im Bereich der und konzentrisch zur Drehachse (3) angeordneten Wellenstück (7, 8) über mindestens ein Trägerelement (13', 13", 13"', 13"", 14) befestigt ist, wobei vorzugsweise vier balkenartige Körper (12', 12", 12"', 12"") äquidistant um die Drehachse (3) der Mischwelle (4) herum angeordnet sind.Mixing device according to one of the preceding claims, characterized in that the at least one connecting element (10 ', 10 ", 10"', 10 "") by a bar-like body (12 ', 12 ", 12"', 12 "") is formed which is fastened by at least one shaft piece (7, 8) arranged in the area of and concentric with the axis of rotation (3) via at least one carrier element (13 ', 13 ", 13"', 13 "", 14), preferably four bar-like bodies (12 ', 12 ", 12"', 12 "") are arranged equidistant around the rotation axis (3) of the mixing shaft (4). Mischvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der mindestens eine balkenartige Körper (12', 12", 12"', 12"") und/oder das mindestens eine Trägerelement (13', 13", 13"', 13"", 14) und/oder das im Bereich der und konzentrisch zur Drehachse (3) angeordnete Wellenstück (7, 8) miteinander verbunden, insbesondere verschweißt, sind.Mixing device according to claim 6, characterized in that the at least one beam-like body (12 ', 12 ", 12"', 12 "") and / or the at least one support element (13 ', 13 ", 13"', 13 "" , 14) and / or the shaft piece (7, 8) arranged in the region of and concentric with the axis of rotation (3) are connected to one another, in particular welded. Mischvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das mindestens eine Verbindungselement (10', 10", 10"', 10"") nahe der Wand (15) des Gehäuses (2) positioniert ist.Mixing device according to one of the preceding claims, characterized in that the at least one connecting element (10 ', 10 ", 10"', 10 "") is positioned near the wall (15) of the housing (2). Mischvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an dem mindestens einen Verbindungselement (10', 10", 10''', 10"") mindestens ein Förderelement (16) angeordnet ist, wobei insbesondere das Förderelement (16) radial innenliegend an dem Verbindungselement (10', 10", 10"', 10"") angeordnet ist und/oder das Förderelement (16) als ebene Platte ausgebildet ist, die an dem Verbindungselement (10', 10", 10''', 10"") befestigt, insbesondere angeschweißt, ist und/oder wobei insbesondere das Förderelement (16) unter einem Winkel (α) zwischen einer Oberflächennormalen (N), insbesondere auf die Platte, und der Förderrichtung (F) der Mischvorrichtung (1) angeordnet ist, wobei der Winkel (α) vorzugsweise zwischen 10° und 50° beträgt.Mixing device according to one of the preceding claims, characterized in that at least one conveying element (16) is arranged on the at least one connecting element (10 ', 10 ", 10'", 10 ""), wherein in particular the conveying element (16) lies radially inward is arranged on the connecting element (10 ', 10 ", 10"', 10 "") and / or the conveying element (16) is formed as a flat plate, which on the connecting element (10 ', 10 ", 10''', 10 "") attached, in particular welded, is and / or wherein in particular the conveying element (16) is arranged at an angle (α) between a surface normal (N), in particular on the plate, and the conveying direction (F) of the mixing device (1), the angle (α) preferably between 10 ° and 50 °. Mischvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Übergang von dem einen im Bereich der und konzentrisch zur Drehachse (3) angeordneten Wellenstück (7) zu dem mit radialem Abstand (r) zur Drehachse (3) angeordneten Verbindungselement (10', 10", 10"', 10"") durch eine Förderwendel (14) gebildet wird.Mixing device according to one of the preceding claims, characterized in that the transition from the one in the region of and concentric to the axis of rotation (3) arranged shaft piece (7) to the radial distance (r) to the axis of rotation (3) arranged connecting element (10 ', 10 ", 10"', 10 "") by a conveyor coil (14) is formed. Mischvorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die Förderwendel (14) bei Rotation um die Drehachse (3) eine Hüllfläche mit in Förderrichtung (F) der Mischvorrichtung (1) zunehmender Querschnittsfläche aufweist, vorzugsweise eine kegelförmige Hüllfläche.Mixing device according to claim 10, characterized in that the conveying spiral (14) has an envelope surface with rotation in the conveying direction (F) of the mixing device (1) has an increasing cross-sectional area, preferably a conical enveloping surface, around the axis of rotation (3). Mischvorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass das Gehäuse (2) im Bereich der Förderwendel (14) eine zur Hüllfläche der Förderwendel (14) korrespondierend ausgeformte Wand (17) aufweist.Mixing device according to claim 11, characterized in that the housing (2) in the region of the conveyor coil (14) has a wall (17) corresponding to the envelope surface of the conveyor spiral (14). Mischvorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass im Bereich der korrespondierend ausgeformten Wand (17) oder in Förderrichtung (F) der Mischvorrichtung (1) unmittelbar auf diesen folgend ein Flüssigkeitszulauf (18) im Gehäuse (2) angeordnet ist.Mixing device according to claim 12, characterized in that in the region of the correspondingly shaped wall (17) or in the conveying direction (F) of the mixing device (1) immediately following this, a liquid inlet (18) in the housing (2) is arranged.
EP05026162A 2004-12-28 2005-12-01 Mixing apparatus Not-in-force EP1676630B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202004020257U DE202004020257U1 (en) 2004-12-28 2004-12-28 mixing device

Publications (2)

Publication Number Publication Date
EP1676630A1 true EP1676630A1 (en) 2006-07-05
EP1676630B1 EP1676630B1 (en) 2008-04-16

Family

ID=35853894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05026162A Not-in-force EP1676630B1 (en) 2004-12-28 2005-12-01 Mixing apparatus

Country Status (3)

Country Link
EP (1) EP1676630B1 (en)
AT (1) ATE392252T1 (en)
DE (2) DE202004020257U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107661707A (en) * 2016-07-29 2018-02-06 北京科林思源能源环境科技发展有限责任公司 A kind of squash type continuous conveying puddles equipment

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006049171B4 (en) 2006-10-18 2009-01-15 Werner Dutschmann Device for continuous and intensive mixing of dry mortar
CN101797772A (en) * 2010-04-29 2010-08-11 顾国勋 Conveying and stirring integrated dry-mixed mortar stirring device
CN102729332A (en) * 2012-06-19 2012-10-17 无锡市优耐特石化装备有限公司 Mortar stirring device
DE102014005405A1 (en) 2014-04-14 2015-10-15 Sto Se & Co. Kgaa Device for applying difficult-to-dry dry building materials
IT201700076502A1 (en) * 2017-07-07 2019-01-07 Evaristo Revelin Improved mixer for premixed plaster plastering machines
DE102020132489A1 (en) 2020-12-07 2022-06-09 Knauf Pft Gmbh & Co. Kg Building material continuous mixing device, method for providing a processing-moist building material mixture by means of a building material continuous mixing device and device, in particular with a control unit or storage unit

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7329132U (en) * 1973-08-09 1975-05-07 Schlecht K Mixing pump device
DE3202518A1 (en) * 1981-02-11 1982-08-19 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Process and apparatus for embedding in cement radioactive or toxic waste in drums
DE3429387A1 (en) * 1984-08-09 1986-02-20 Kraftwerk Union AG, 4330 Mülheim METHOD AND DEVICE FOR INCORPORATING IN PARTICULAR RADIOACTIVE WASTE MATERIALS IN A BINDING AGENT
DE3546501A1 (en) * 1985-09-13 1987-04-23 Heidelberger Zement Ag Device for the continuous supply of hydraulically setting composition
US4778277A (en) * 1984-08-09 1988-10-18 Kraftwerk Union Aktiengesellschaft Mixing device
DE19542663A1 (en) * 1995-11-16 1997-05-22 Wagner Gmbh J Portable continuous mixer for cement, concrete etc.
DE19755059A1 (en) * 1997-12-11 1999-07-01 Martin Theodor Melchior Mixing whisk for a mixing device
DE19812154A1 (en) * 1998-03-20 1999-09-23 Reburg Patentverwertungs Gmbh Mixing and conveying apparatus used e.g. for mixing and conveying mortar mixtures

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7329132U (en) * 1973-08-09 1975-05-07 Schlecht K Mixing pump device
DE3202518A1 (en) * 1981-02-11 1982-08-19 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Process and apparatus for embedding in cement radioactive or toxic waste in drums
DE3429387A1 (en) * 1984-08-09 1986-02-20 Kraftwerk Union AG, 4330 Mülheim METHOD AND DEVICE FOR INCORPORATING IN PARTICULAR RADIOACTIVE WASTE MATERIALS IN A BINDING AGENT
US4778277A (en) * 1984-08-09 1988-10-18 Kraftwerk Union Aktiengesellschaft Mixing device
DE3546501A1 (en) * 1985-09-13 1987-04-23 Heidelberger Zement Ag Device for the continuous supply of hydraulically setting composition
DE19542663A1 (en) * 1995-11-16 1997-05-22 Wagner Gmbh J Portable continuous mixer for cement, concrete etc.
DE19755059A1 (en) * 1997-12-11 1999-07-01 Martin Theodor Melchior Mixing whisk for a mixing device
DE19812154A1 (en) * 1998-03-20 1999-09-23 Reburg Patentverwertungs Gmbh Mixing and conveying apparatus used e.g. for mixing and conveying mortar mixtures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107661707A (en) * 2016-07-29 2018-02-06 北京科林思源能源环境科技发展有限责任公司 A kind of squash type continuous conveying puddles equipment

Also Published As

Publication number Publication date
ATE392252T1 (en) 2008-05-15
DE202004020257U1 (en) 2006-02-09
EP1676630B1 (en) 2008-04-16
DE502005003725D1 (en) 2008-05-29

Similar Documents

Publication Publication Date Title
EP3664924B1 (en) Mixing device, method for mixing, and method for cleaning a mixing device
DE102006049171B4 (en) Device for continuous and intensive mixing of dry mortar
DE2901341C2 (en)
EP1676630A1 (en) Mixing apparatus
DE60001194T2 (en) Mixers, especially for loose substances in granular, powdery or pasty form
WO2001028672A1 (en) Compulsory mixer used, in particular, as a cement mixer
DE3809661C2 (en) Device for continuously mixing a building material
DE2425727C3 (en) Device for treating substances, in particular for mixing granular, powdery, pasty and / or liquid masses
DE2047650C3 (en) Mixing device for fiber-containing mixtures
DE2558304C3 (en) Mixing head for reactive, liquid components
DE3612853C2 (en)
EP0304716B1 (en) Bolt coupling for excentric srew pumps
EP1285586A2 (en) Process and apparatus for continuous feeding of confectionery masses
DE19629824C2 (en) Device for moistening solids in a conveyor
EP0390809B2 (en) Grinding device
DE2219352A1 (en) Continuous horizontal fixed drum mixer - for chips, fibres or powder, with liq
DE102004020410B4 (en) Dynamic mixer for pseudoplastic pastes
EP3581264B1 (en) Device for manufacturing a flowable medium
EP0726091B1 (en) Loop mixer
EP1000718A2 (en) Mixer for making a pumpable mortar
DE1442595C3 (en) Method and device for carrying out mixing, reaction and dissolving processes
DE1281947B (en) Bulk goods container
EP3189889A1 (en) Mixing device and tool for mixing
WO1996032186A1 (en) Device for mixing chemicals into a fibrous material suspension
DE1471564C (en) Filling car

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

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20061005

17Q First examination report despatched

Effective date: 20061110

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 502005003725

Country of ref document: DE

Date of ref document: 20080529

Kind code of ref document: P

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

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080916

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080727

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080716

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

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080816

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

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080716

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

EN Fr: translation not filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

26N No opposition filed

Effective date: 20090119

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

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

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

Ref country code: MC

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

Effective date: 20081231

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

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

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

Ref country code: IT

Payment date: 20091222

Year of fee payment: 5

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

Ref country code: AT

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

Effective date: 20081201

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

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081017

Ref country code: LU

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

Effective date: 20081201

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080416

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

Ref country code: LI

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

Effective date: 20091231

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080717

Ref country code: CH

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

Effective date: 20091231

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

Ref country code: IT

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

Effective date: 20101201

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090227

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

Ref country code: DE

Payment date: 20130129

Year of fee payment: 8

Ref country code: GB

Payment date: 20130102

Year of fee payment: 8

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

Ref country code: BE

Payment date: 20130130

Year of fee payment: 8

BERE Be: lapsed

Owner name: KNAUF PFT G.M.B.H. & CO. KG

Effective date: 20131231

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502005003725

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20131201

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502005003725

Country of ref document: DE

Effective date: 20140701

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

Ref country code: DE

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

Effective date: 20140701

Ref country code: BE

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

Effective date: 20131231

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

Ref country code: GB

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

Effective date: 20131201