EP0994748A1 - Mixing whisk for a mixer device - Google Patents

Mixing whisk for a mixer device

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Publication number
EP0994748A1
EP0994748A1 EP97951251A EP97951251A EP0994748A1 EP 0994748 A1 EP0994748 A1 EP 0994748A1 EP 97951251 A EP97951251 A EP 97951251A EP 97951251 A EP97951251 A EP 97951251A EP 0994748 A1 EP0994748 A1 EP 0994748A1
Authority
EP
European Patent Office
Prior art keywords
mixing
rotation
rods
feed
spiral
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.)
Ceased
Application number
EP97951251A
Other languages
German (de)
French (fr)
Inventor
Martin Theodor Melchior
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0994748A1 publication Critical patent/EP0994748A1/en
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/565—Mixing liquids with solids by introducing liquids in solid material, e.g. to obtain slurries
    • 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
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • 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
    • 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
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B01F27/1144—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections with a plurality of blades following a helical path on a shaft or a blade support

Definitions

  • the invention relates to a mixer for a mixing device for powdery or fine-grained mix for mixing with water, in particular for a mixing device arranged in a cleaning machine.
  • Plastering machines in use with a mixing device in which powdery or fine-grained mix is mixed with water, have a funnel-shaped conveying container for the powdery mix, a mixing zone connected to the funnel exit down into which the water is fed, and a mixing whisk which the mixed material entered through an opening in the conveying container is captured and brought into the mixing zone.
  • the mixer engages with a drive motor on the conveyor tank side and with a feed pump on the mixing zone side, which pumps the mixed material into a pipeline.
  • the feed pump is usually a screw pump and rotates simultaneously with the mixer.
  • the mixing paddle has two mixing rods arranged parallel to its axis of rotation in the mixing zone, which extend as far as the feed pump and are connected on the feed pump side by a cross rod that has a centering pin and is also designed as a driving element for the feed pump, which also ensures the stability of the mixing paddle.
  • the mixing rods are connected to one another at their upper end in the region of the feed hopper outlet with a crosspiece, on which a drive rod guided through the feed hopper is fixedly arranged, which is in engagement with the drive shaft of the drive motor.
  • a mixing spiral is arranged around this drive rod.
  • Pump-side end is firmly connected to one of the two mixing rods and extends spirally and opening upwards into the feed hopper.
  • the mix fed into the feed hopper is gripped by the rotating spiral and, with its support, is brought down into the mixing zone and mixed there with water which is introduced through a lateral pipeline.
  • clumps and consequently blockages can occur, in particular due to insufficient mixing, so that the mixing and conveying process of the mixed material is considerably disturbed.
  • the mixing whisk has two mixing rods arranged essentially parallel to its axis of rotation for a mixing zone formed in the mixing device and a conveyor spiral arranged thereon, which is arranged in a conveying funnel above the mixing zone, and is in a known manner one end with a drive motor and the other end with one Feed pump connected.
  • the two mixing bars are connected by a cross bar that has a centering pin on the feed pump side and is designed as a driving element for the feed pump.
  • the mixing Rods are guided through the conveyor spiral to the drive motor and unite there to form an engagement element for the output shaft of the drive motor.
  • the end of the feed spiral facing the feed pump is fastened to one of the mixing rods and is supported at a distance from this fastening point by a cross-piece connected to both mixing rods.
  • This traverse is arranged in the radial direction, relative to the axis of rotation of the mixing whisk, to the point of connection on the mixing rod to an acute angle to a plane running perpendicular to the axis of rotation and, like the delivery spool, has a pressure surface on the delivery pump side, which is set in the direction of rotation and through which the powdery or fine-grained mix is pressed towards the center of the hopper and the mixing zone.
  • the mixing bars can have a pressure surface on the axis of rotation and a pointed and rounded cutting edge in the direction of rotation at the front, so that they can penetrate the mix better. They can have a pressure surface on the axis of rotation, the direction of rotation being exposed to the outside, preferably at an angle of 15 °, so that the material to be mixed is pressed into the central region of the mixing zone and the mixing process is accelerated.
  • the pressure surfaces of the conveying spiral and the traverse which are set in the direction of rotation, can have an angle of 10 ° to 20 °, preferably of 15 °, with respect to a plane arranged perpendicular to the axis of rotation.
  • the traverse can have a rounded cutting edge in the direction of rotation in order to be able to penetrate the mix better and guide it to its pressure surface.
  • This design of the mixing paddle in which the area of the axis of rotation inside the conveyor spiral is free of components, since the crossbeam is arranged in the upper third of the mixing paddle and thus at a distance above the outlet of the funnel, allows the mix to be accelerated in this central one Area and push down freely. This prevents clumping and clogging, especially in the edge area of the feed spool.
  • the crossbeam arranged at a distance from the mixing zone also contributes to this.
  • this ensures the stability of the mixing whisk, at the same time fixes the conveyor spiral at its free end and also serves as a conveying element.
  • the fact that the mixing rods are also drive rods for the mixing whisk also minimizes the production outlay for the mixing whisk.
  • Fig. 4 a section II-III through the mixer.
  • the mixing whisk 1 shows a mixing device with a mixer 1 according to the invention for a cleaning machine.
  • the mixing whisk 1 has two parallel to the axis of rotation A im Mixing rods 2 arranged at a distance and a conveyor spiral 3.
  • the mixer whisk 1 engages with a flange 4 in a recess of the output shaft 5 of an electric motor 6 corresponding to the latter.
  • the mixing rods 2 are connected to one another by a cross rod 8 having a centering pin 7 (FIG. 2), which ensures the stability of the mixing mixer 1 and at the same time as a driving element for the feed pump 9, a screw pump of a known type, that is to say as a drive. selement for this acts.
  • the mixing paddle 1 is arranged in such a way that the conveyor spiral 3 is in the area of a feed hopper 10 and the mixing rods 2 are in the area of their parallel arrangement in a mixing zone 11 which connects to the tapered outlet of the feed hopper 10 and into which a pipe 12 for introduction flows out of water.
  • the mixing rods 2 are guided through the conveyor spiral 3 to the output shaft 5. With its end facing the feed pump 9, the feed spiral 3 is welded to one of the mixing rods 2 and is supported at a distance from this fastening point by a crossbar 13 connected to both mixing rods 2 (welded connection), which is arranged outside the mixing rods 2 for about a third of its total length L. is (Fig. 2).
  • Fig. 3 shows that this traverse 13 in the radial direction to the connection point to the conveyor spiral 3 with respect to the perpendicular to the axis of rotation A - or the plane perpendicular to the axis of rotation - arranged increasing at an angle ⁇ of substantially 15 ° (also Fig. 2) is.
  • the delivery spiral 3 and the cross member 13 each have a pressure surface 14 or 15 on the delivery pump side, which are respectively set at an angle ⁇ of essentially 15 ° in the direction of rotation (indicated by the arrow) (FIG. 3).
  • the mixing rods 2 have axes of rotation also a pressure surface 16 on the side, which is turned outward in the direction of rotation at an angle ⁇ of essentially 15 ° (FIG. 4).
  • the cross member 13 and the mixing rods 2 are provided with a rounded cutting edge S in the direction of rotation at the front, as can be seen from FIGS. 1, 2, 3 and 4. Due to the angle of attack ß of the conveyor spiral and the associated inclination thereof, a cutting edge S '.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

The invention relates to a mixing whisk (1) for a mixing device, comprising two mixing rods (2) arranged at a distance to each other and essentially parallel to its axis of rotation (A) and a feed spiral positioned on said rods. Said whisk is connected with one end to a drive motor (6) and with its other end to a feed pump (9). The feed spiral (3) is positioned in the area of a feed hopper (10) which narrows towards the feed pump (9) and a mixing zone is provided for under said feed hopper. The invention aims to provide a mixing whisk (1) which considerably accelerates the mixing process and allows for it to be carried out largely without disruption. To this end the mixing rods (2) extend through the feed spiral (3) as far as the drive motor (6), the feed spiral (3) is connected to one of the mixing rods (2) with that end which faces the feed pump (9) and, at a distance from the point of connection, is supported by a cross bar (13) joined to both mixing rods (2). Said cross bar is arranged in a radial direction towards the outside and inclined at an angle α. On the feed pump side the feed spiral (3) and the cross bar (13) each have a support surface (14, 15) and are arranged at an angle β in the direction of rotation.

Description

Mischquirl für eine Mischeinrichtung Mixing whisk for a mixing device
Die Erfindung betrifft einen Mischquirl für eine Mischeinrichtung für pulverförmiges oder feinkörniges Mischgut zum Mischen mit Wasser, insbesondere für eine in einer Putzmaschine angeordnete Mischeinrichtung.The invention relates to a mixer for a mixing device for powdery or fine-grained mix for mixing with water, in particular for a mixing device arranged in a cleaning machine.
Im Einsatz befindliche Putzmaschinen mit einer Mischeinrichtung, in der pulverförmiges oder feinkörniges Mischgut mit Wasser vermischt wird, weisen einen trichterförmigen Förderbehälter für das pulverförmige Mischgut, eine an den Trichterausgang nach unten angeschlossene Mischzone, in die das Wasser eingeleitet wird, und einen Mischquirl auf, der das durch eine Öffnung in den Förderbehälter eingegebene Mischgut erfaßt und in die Mischzone verbringt. Der Mischquirl wiederum steht förderbehältersei- tig mit einem Antriebsmotor und mischzonenseitig mit einer Förderpumpe im Eingriff, die das gemischte Gut in eine Rohrleitung pumpt. Die Förderpumpe ist üblicherweise eine Schneckenpumpe und dreht sich simultan mit dem Mischquirl .Plastering machines in use with a mixing device, in which powdery or fine-grained mix is mixed with water, have a funnel-shaped conveying container for the powdery mix, a mixing zone connected to the funnel exit down into which the water is fed, and a mixing whisk which the mixed material entered through an opening in the conveying container is captured and brought into the mixing zone. The mixer, in turn, engages with a drive motor on the conveyor tank side and with a feed pump on the mixing zone side, which pumps the mixed material into a pipeline. The feed pump is usually a screw pump and rotates simultaneously with the mixer.
Der Mischquirl weist in der Mischzone zwei parallel zu seiner Drehachse im Abstand angeordnete Mischstäbe auf, die bis zur Förderpumpe reichen und förderpumpenseitig durch einen einen Zentrierzapfen aufweisenden und zugleich als Mitnahmeelement für die Förderpumpe ausgebildeten Querstab miteinander verbunden sind, der auch die Stabilität des Mischquirls sicherstellt. Die Mischstäbe sind an ihrem oberen Ende im Bereich des Fördertrichterausganges mit einem Quersteg miteinander verbunden, an dem ein durch den Fördertrichter geführter AntriebsStab fest angeordnet ist, der mit der Antriebswelle des An- triebsmotors im Eingriff steht. Um diesen Antriebsstab ist eine Mischspirale angeordnet, die mit ihrem förder- pumpenseitigen Ende mit einem der beiden Mischstäbe fest verbunden ist und sich spiralförmig und nach oben öffnend in den Fördertrichter erstreckt .The mixing paddle has two mixing rods arranged parallel to its axis of rotation in the mixing zone, which extend as far as the feed pump and are connected on the feed pump side by a cross rod that has a centering pin and is also designed as a driving element for the feed pump, which also ensures the stability of the mixing paddle. The mixing rods are connected to one another at their upper end in the region of the feed hopper outlet with a crosspiece, on which a drive rod guided through the feed hopper is fixedly arranged, which is in engagement with the drive shaft of the drive motor. A mixing spiral is arranged around this drive rod. Pump-side end is firmly connected to one of the two mixing rods and extends spirally and opening upwards into the feed hopper.
Das in den Fördertrichter eingegebene Mischgut wird von der sich drehenden Spirale erfaßt und mit deren Unterstützung nach unten in die Mischzone verbracht und dort mit Wasser, das durch eine seitliche Rohrleitung eingeführt wird, vermischt. Dabei kann es jedoch in Abhängigkeit vom Mischgut und der eingeleiteten Wassermenge zu Verklumpungen und in deren Folge zu Verstopfungen kommen, insbesondere durch eine ungenügende Durchmischung, so daß der Misch- und der Förderprozeß des gemischten Gutes erheblich gestört ist.The mix fed into the feed hopper is gripped by the rotating spiral and, with its support, is brought down into the mixing zone and mixed there with water which is introduced through a lateral pipeline. However, depending on the mix and the amount of water introduced, clumps and consequently blockages can occur, in particular due to insufficient mixing, so that the mixing and conveying process of the mixed material is considerably disturbed.
Es ist nun Aufgabe der Erfindung, den Mischquirl für eine Mischeinrichtung nach dem Oberbegriff des Anspruchs 1 so zu gestalten, daß der Mischprozeß erheblich beschleunigt wird und weitestgehend störungsfrei durchführbar ist.It is an object of the invention to design the mixer for a mixing device according to the preamble of claim 1 so that the mixing process is considerably accelerated and can be carried out largely trouble-free.
Diese Aufgabe wird bei einem gattungsgemäßen Mischquirl nach dem Oberbegriff des Anspruchs 1 durch dessen kennzeichnende Merkmale gelöst.This object is achieved in a generic mixing whisk according to the preamble of claim 1 by its characterizing features.
Der Mischquirl weist zwei im wesentlichen parallel zu seiner Drehachse angeordnete Mischstäbe für eine in der Mischeinrichtung ausgebildete Mischzone und eine an diesen angeordnete Förderspirale auf, die in einem Fördertrichter oberhalb der Mischzone angeordnet ist, und ist in bekannter Weise einerends mit einem Antriebsmotor und andernends mit einer Förderpumpe verbunden. Im Bereich der Förderpumpe sind die beiden Mischstäbe durch einen förderpumpenseitig einen Zentrierzapfen aufweisenden und als Mitnahmeelement für die Förderpumpe ausgebildeten Querstab verbunden. Erfindungsgemäß sind die Misch- Stäbe durch die Förderspirale hindurch bis zum Antriebsmotor geführt und vereinigen sich dort zu einem Eingriffselement für die Abtriebswelle des Antriebsmotors . Die Förderspirale ist mit ihrem der Förderpumpe zugewandten Ende an einem der Mischstäbe befestigt und im Abstand von dieser Befestigungsstelle durch eine mit beiden Mischstäben verbundene Traverse gestützt. Diese Traverse ist in radialer Richtung, bezogen auf die Drehachse des Mischquirls, zur Anbindungsstelle an dem Mischstab zu einer senkrecht zur Drehachse verlaufenden Ebene im spitzen Winkel ansteigend angeordnet und weist, wie auch die Förderspule, eine förderpumpenseitig ausgebildete Druckflache auf, die in Drehrichtung angestellt ist und durch die das pulverförmige oder feinkörnige Mischgut in Richtung zur Mitte des Fördertrichters und zur Mischzone gedrückt wird.The mixing whisk has two mixing rods arranged essentially parallel to its axis of rotation for a mixing zone formed in the mixing device and a conveyor spiral arranged thereon, which is arranged in a conveying funnel above the mixing zone, and is in a known manner one end with a drive motor and the other end with one Feed pump connected. In the area of the feed pump, the two mixing bars are connected by a cross bar that has a centering pin on the feed pump side and is designed as a driving element for the feed pump. According to the invention, the mixing Rods are guided through the conveyor spiral to the drive motor and unite there to form an engagement element for the output shaft of the drive motor. The end of the feed spiral facing the feed pump is fastened to one of the mixing rods and is supported at a distance from this fastening point by a cross-piece connected to both mixing rods. This traverse is arranged in the radial direction, relative to the axis of rotation of the mixing whisk, to the point of connection on the mixing rod to an acute angle to a plane running perpendicular to the axis of rotation and, like the delivery spool, has a pressure surface on the delivery pump side, which is set in the direction of rotation and through which the powdery or fine-grained mix is pressed towards the center of the hopper and the mixing zone.
Die Mischstäbe können drehachsenseitig eine Druckfläche und in Drehrichtung vorn eine spitz zulaufende und abgerundete Schneide aufweisen, damit sie das Mischgut besser durchdringen können. Sie können drehachsenseitig eine Druckfläche aufweisen, die Drehrichtung nach außen ausgestellt sein, bevorzugt mit einem Winkel von 15°, so daß das Mischgut in den mittleren Bereich der Mischzone gedrückt und der Mischprozeß beschleunigt werden.The mixing bars can have a pressure surface on the axis of rotation and a pointed and rounded cutting edge in the direction of rotation at the front, so that they can penetrate the mix better. They can have a pressure surface on the axis of rotation, the direction of rotation being exposed to the outside, preferably at an angle of 15 °, so that the material to be mixed is pressed into the central region of the mixing zone and the mixing process is accelerated.
Die in Drehrichtung angestellten Druckflächen der Förderspirale und der Traverse können einen Winkel von 10° bis 20°, bevorzugt von 15°, gegenüber einer senkrecht zur Drehachse angeordneten Ebene aufweisen.The pressure surfaces of the conveying spiral and the traverse, which are set in the direction of rotation, can have an angle of 10 ° to 20 °, preferably of 15 °, with respect to a plane arranged perpendicular to the axis of rotation.
Die Traverse kann - wie die Mischstäbe - in Drehrichtung vorn eine abgerundete Schneide aufweisen, um das Mischgut besser durchdringen und zu ihrer Druckfläche leiten zu können. Durch diese Gestaltung des Mischquirls, bei dem der Bereich der Drehachse im Innern der Förderspirale frei von Bauteilen ist, da die Traverse im oberen Drittel des Mischquirls und damit im Abstand oberhalb vom Ausgang des Trichters angeordnet ist, gelingt es, das Mischgut beschleunigt in diesen mittleren Bereich und unbehindert nach unten zu drücken. Verklumpungen und Verstopfungen, insbesondere im Randbereich der Förderspule, werden so vermieden. Dazu trägt besonders auch die im Abstand zur Mischzone angeordnete Traverse bei . Diese stellt einerseits die Stabilität des Mischquirls sicher, fixiert zugleich an ihrem freien Ende die Förderspirale und dient auch als Förderelement. Überdies ist dadurch, daß die Mischstäbe zugleich auch Antriebsstäbe für den Mischquirl sind, der Herstellungsaufwand für den Mischquirl minimiert .Like the mixing rods, the traverse can have a rounded cutting edge in the direction of rotation in order to be able to penetrate the mix better and guide it to its pressure surface. This design of the mixing paddle, in which the area of the axis of rotation inside the conveyor spiral is free of components, since the crossbeam is arranged in the upper third of the mixing paddle and thus at a distance above the outlet of the funnel, allows the mix to be accelerated in this central one Area and push down freely. This prevents clumping and clogging, especially in the edge area of the feed spool. The crossbeam arranged at a distance from the mixing zone also contributes to this. On the one hand, this ensures the stability of the mixing whisk, at the same time fixes the conveyor spiral at its free end and also serves as a conveying element. In addition, the fact that the mixing rods are also drive rods for the mixing whisk also minimizes the production outlay for the mixing whisk.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispiels näher erläutert. In der zugehörigen Zeichnung zeigen schematisch:The invention is explained in more detail below using an exemplary embodiment. The accompanying drawing shows schematically:
Fig. 1: eine Mischeinrichtung mit einem erfindungsgemäßen Mischquirl,1: a mixing device with a mixing whisk according to the invention,
Fig. 2: eine perspektivische Darstellung des Mischquirls,2: a perspective view of the mixing whisk,
Fig. 3: die Stellung einer die Mischstäbe verbindenden und an ihrem freien Ende die Förderspirale hal- ternden Traverse und3: the position of a crossbar connecting the mixing rods and holding the conveyor spiral at its free end and
Fig. 4: einen Schnitt II -III durch den Mischquirl.Fig. 4: a section II-III through the mixer.
In Fig. 1 ist eine Mischeinrichtung mit einem erfindungsgemäßen Mischquirl 1 für eine Putzmaschine dargestellt. Der Mischquirl 1 weist zwei parallel zur Drehachse A im Abstand angeordnete Mischstäbe 2 und eine Förderspirale 3 auf. Am oberen Ende greift der Mischquirl 1 mit einem Flansch 4 in eine mit diesem korrespondierende Ausnehmung der Abtriebswelle 5 eines Elektromotors 6 ein. Am unteren Ende sind die Mischstäbe 2 durch einen einen Zentrierzap- fen 7 (Fig. 2) aufweisenden Querstab 8 miteinander verbunden, der die Stabilität des Mischquirls 1 sicherstellt und zugleich als Mitnahmeelement für die Förderpumpe 9, eine Schneckenpumpe bekannter Bauart, also als Antrieb- selement für diese wirkt . Der Mischquirl 1 ist so angeordnet, daß sich die Förderspirale 3 im Bereich eines Fördertrichters 10 und die Mischstäbe 2 im Bereich ihrer parallelen Anordnung in einer Mischzone 11 befinden, die sich an den verjüngten Ausgang des Fördertrichters 10 anschließt und in die eine Rohrleitung 12 zur Einleitung von Wasser mündet.1 shows a mixing device with a mixer 1 according to the invention for a cleaning machine. The mixing whisk 1 has two parallel to the axis of rotation A im Mixing rods 2 arranged at a distance and a conveyor spiral 3. At the upper end, the mixer whisk 1 engages with a flange 4 in a recess of the output shaft 5 of an electric motor 6 corresponding to the latter. At the lower end, the mixing rods 2 are connected to one another by a cross rod 8 having a centering pin 7 (FIG. 2), which ensures the stability of the mixing mixer 1 and at the same time as a driving element for the feed pump 9, a screw pump of a known type, that is to say as a drive. selement for this acts. The mixing paddle 1 is arranged in such a way that the conveyor spiral 3 is in the area of a feed hopper 10 and the mixing rods 2 are in the area of their parallel arrangement in a mixing zone 11 which connects to the tapered outlet of the feed hopper 10 and into which a pipe 12 for introduction flows out of water.
Die Mischstäbe 2 sind durch die Förderspirale 3 hindurch bis zur Abtriebswelle 5 geführt. Mit ihrem der Förderpumpe 9 zugewandten Ende ist die Förderspirale 3 an einem der Mischstäbe 2 angeschweißt und im Abstand von dieser Befestigungsstelle durch eine mit beiden Mischstäben 2 verbundene Traverse 13 gestützt (Schweißverbindung), die zu etwa einem Drittel ihrer Gesamtlänge L außerhalb der Mischstäbe 2 angeordnet ist (Fig. 2) . Fig. 3 zeigt, daß diese Traverse 13 in radialer Richtung zur Anbindungsstelle an die Förderspirale 3 gegenüber der zur Drehachse A Senkrechten - oder der senkrecht zur Drehachse verlaufenden Ebene - in einem Winkel α von im wesentlichen 15° (auch Fig. 2) ansteigend angeordnet ist. Die Förderspirale 3 und die Traverse 13 weisen förderpumpenseitig jeweils eine Druckfläche 14 bzw. 15 auf, die in Drehrichtung (durch Pfeil angegeben) jeweils im Winkel ß von im wesentlichen 15° angestellt sind (Fig. 3) . Die Mischstäbe 2 weisen drehachsen- seitig ebenfalls eine Druckfläche 16 auf, die in Drehrich- tung nach außen in einem Winkel γ von im wesentlichen 15° ausgestellt ist (Fig. 4) . Die Traverse 13 und die Mischstäbe 2 sind in Drehrichtung vorn mit einer abgerundeten Schneide S versehen, wie aus den Fig. 1, 2, 3, und 4 ersichtlich ist. Durch den Anstellwinkel ß der Förderspirale und die damit verbundene Schrägstellung derselben ergibt sich auch an dieser eine Schneide S '.f.The mixing rods 2 are guided through the conveyor spiral 3 to the output shaft 5. With its end facing the feed pump 9, the feed spiral 3 is welded to one of the mixing rods 2 and is supported at a distance from this fastening point by a crossbar 13 connected to both mixing rods 2 (welded connection), which is arranged outside the mixing rods 2 for about a third of its total length L. is (Fig. 2). Fig. 3 shows that this traverse 13 in the radial direction to the connection point to the conveyor spiral 3 with respect to the perpendicular to the axis of rotation A - or the plane perpendicular to the axis of rotation - arranged increasing at an angle α of substantially 15 ° (also Fig. 2) is. The delivery spiral 3 and the cross member 13 each have a pressure surface 14 or 15 on the delivery pump side, which are respectively set at an angle β of essentially 15 ° in the direction of rotation (indicated by the arrow) (FIG. 3). The mixing rods 2 have axes of rotation also a pressure surface 16 on the side, which is turned outward in the direction of rotation at an angle γ of essentially 15 ° (FIG. 4). The cross member 13 and the mixing rods 2 are provided with a rounded cutting edge S in the direction of rotation at the front, as can be seen from FIGS. 1, 2, 3 and 4. Due to the angle of attack ß of the conveyor spiral and the associated inclination thereof, a cutting edge S '.
Beim Betrieb der Mischeinrichtung werden durch die Rohrleitung 12 Wasser W und durch die Aussparung 17 in dem Fördertrichter 10 pulverförmiges oder feinkörniges Mischgut M kontinuierlich eingegeben. Das Mischgut M gelangt dabei in den Bereich der rotierenden Förderspirale 3, die dieses mit ihrer Druckfläche 14 erfaßt und zur Mitte und nach unten, also in Richtung der Mischzone 11 drückt. Auch die im Abstand vom Ausgang des Fördertrichters 10 angeordnete Traverse 13 wirkt in dieser Weise. Im Bereich der Mischzone 11 wird das Mischgut M vom Wasser durchsetzt bzw. mit diesem vermischt, wobei die nach außen ausgestellten Mischstäbe 2 dazu beitragen, daß auch in diesem Bereich der Mischeinrichtung das Mischgut M zur Mitte zu gedrückt wird. Auf diese Weise wird der Mischvorgang beschleunigt und Verklumpungen im Randbereich des Fördertrichters 10 und der Mischzone 11 sowie auch im Bereich der Traverse 13 werden weitgehend verhindert. During operation of the mixing device, water W is continuously introduced through the pipeline 12 and through the recess 17 in the feed hopper 10, powdery or fine-grained mixture M is fed. The mix M thereby reaches the area of the rotating conveyor spiral 3, which grasps it with its pressure surface 14 and presses it towards the center and downwards, that is to say in the direction of the mixing zone 11. The traverse 13, which is arranged at a distance from the outlet of the feed hopper 10, also acts in this way. In the area of the mixing zone 11, the mix M is penetrated by the water or mixed with it, the mixing rods 2 being exposed to the outside helping to ensure that the mix M is also pressed towards the center in this area of the mixing device. In this way, the mixing process is accelerated and lumps in the edge region of the feed hopper 10 and the mixing zone 11 and also in the region of the cross member 13 are largely prevented.

Claims

Patentansprüche claims
1. Mischquirl für eine Mischeinrichtung mit zwei im wesentlichen parallel zu seiner Drehachse im Abstand angeordneten Mischstäben und einer an diesen angeordneten Förderspirale, der einerends mit einem Antriebsmotor und andernends mit einer Förderpumpe verbunden ist, wobei die Förderspirale im Bereich eines sich zur Förderpumpe zu verjüngenden Fördertrichters angeordnet ist und die Mischeinrichtung unterhalb des Fördertrichters eine Mischzone aufweist, in die eine Rohrleitung zum Einleiten von Wasser mündet, dadurch gekennzeichnet, daß die Mischstäbe (2) durch die Förderspirale (3) hindurch bis zum Antriebsmotor (6) geführt sind und mit dessen Abtriebswelle (5) in Eingriff stehen, daß die Förderspirale (3) mit ihrem der Förderpumpe (9) zugewandten Ende an einem der Mischstäbe (2) befestigt und im Abstand von dieser Befestigungsstelle durch eine mit beiden Mischstäben (2) verbundene Traverse (13) gestützt ist, die in radialer Richtung zur Anbindungsstelle an die Förderspirale (3) gegenüber einer senkrecht zur Drehachse (A) verlaufenden Ebene im spitzen Winkel (α) ansteigend angeordnet ist, und daß die Förderspirale (3) und die Traverse (13) förderpumpenseitig jeweils eine Druckfläche (14; 15) aufweisen, die jeweils in Drehrichtung im Winkel (ß) angestellt ist.1. Mixing whisk for a mixing device with two mixing rods arranged essentially parallel to its axis of rotation at a distance and a conveyor spiral arranged thereon, which is connected at one end to a drive motor and at the other end to a feed pump, the feed spiral being in the region of a feed hopper to be tapered to the feed pump is arranged and the mixing device below the feed hopper has a mixing zone into which a pipeline for introducing water opens, characterized in that the mixing rods (2) are guided through the conveyor spiral (3) to the drive motor (6) and with its output shaft (5) are engaged so that the conveyor spiral (3) with its end facing the feed pump (9) is fastened to one of the mixing rods (2) and is supported at a distance from this fastening point by a crossbar (13) connected to both mixing rods (2) is that in the radial direction to the connection point to the För derspirale (3) is arranged to rise at an acute angle (α) relative to a plane perpendicular to the axis of rotation (A), and that the delivery spiral (3) and the crossmember (13) each have a pressure surface (14; 15), which is set in the direction of rotation at an angle (ß).
2. Mischquirl nach Anspruch 1, dadurch gekennzeichnet, daß die Mischstäbe (2) drehachsenseitig eine Druckfläche2. Mixing whisk according to claim 1, characterized in that the mixing rods (2) have a pressure surface on the axis of rotation
(16) aufweisen, die in Drehrichtung nach außen im Winkel (γ) ausgestellt ist, bevorzugt im Winkel von 15°. (16), which is turned outward in the direction of rotation at an angle (γ), preferably at an angle of 15 °.
3. Mischquirl nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Mischstäbe (2) in Drehrichtung vorn eine abgerundete Schneide (S) aufweisen.3. Mixing whisk according to claim 1 or 2, characterized in that the mixing rods (2) have a rounded cutting edge (S) in the direction of rotation at the front.
4. Mischquirl nach Anspruch 1, dadurch gekennzeichnet, daß die Druckflächen (14; 15) in einem Winkel ß von 10° bis 20°, bevorzugt im wesentlichen von 15°, angestellt sind.4. Mixing whisk according to claim 1, characterized in that the pressure surfaces (14; 15) are made at an angle β of 10 ° to 20 °, preferably essentially 15 °.
5. Mischquirl nach Anspruch 1, dadurch gekennzeichnet, daß die Traverse (13) vorn eine abgerundete Schneide (S) aufweist.5. Mixing whisk according to claim 1, characterized in that the crossmember (13) has a rounded cutting edge (S) at the front.
6. Mischquirl nach Anspruch 1, dadurch gekennzeichnet, daß der Anstiegswinkel (α) der Traverse (13) im wesentlichen 15° beträgt. 6. Mixing whisk according to claim 1, characterized in that the rise angle (α) of the crossmember (13) is essentially 15 °.
EP97951251A 1997-07-09 1997-11-20 Mixing whisk for a mixer device Ceased EP0994748A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19729196 1997-07-09
DE19729196A DE19729196C2 (en) 1997-07-09 1997-07-09 Mixing whisk for a device for mixing and conveying a bulk material with water
PCT/EP1997/006484 WO1999002249A1 (en) 1997-07-09 1997-11-20 Mixing whisk for a mixer device

Publications (1)

Publication Number Publication Date
EP0994748A1 true EP0994748A1 (en) 2000-04-26

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EP97951251A Ceased EP0994748A1 (en) 1997-07-09 1997-11-20 Mixing whisk for a mixer device

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EP (1) EP0994748A1 (en)
DE (1) DE19729196C2 (en)
HU (1) HUP0004866A3 (en)
PL (1) PL337901A1 (en)
SK (1) SK82000A3 (en)
WO (1) WO1999002249A1 (en)
YU (1) YU700A (en)

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DE102015106419A1 (en) * 2015-04-27 2016-10-27 Stefan Steverding Sondermaschinen- und Vorrichtungsbau GmbH Agitator and container with stirrer

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Publication number Priority date Publication date Assignee Title
DE7308915U (en) * 1973-07-26 Pft Putz U Foerdertechnik Gmbh Device for mixing Bindemit tel, especially plaster of paris, with water
US3113843A (en) * 1959-01-27 1963-12-10 Du Pont Apparatus for separating a vapor from a viscous material such as molten polymer
US3087435A (en) * 1961-03-31 1963-04-30 Du Pont Pumping process
GB1037665A (en) * 1962-08-31 1966-08-03 Unilever Ltd Mixing device
US3361537A (en) * 1965-05-12 1968-01-02 Du Pont Polymer finishing apparatus
DE1940558U (en) * 1965-05-12 1966-06-16 Karl Dipl Ing Schlecht MIXING AND PUMPING DEVICE.
US3877881A (en) * 1968-10-08 1975-04-15 Mitsubishi Heavy Ind Ltd Reactors for highly viscous materials
DE2218418A1 (en) * 1972-04-17 1973-10-31 Wilhelm Fleissner MIXING AND SPRAYING DEVICE FOR PLASTIC AND GRAINY GOODS
DE7329132U (en) * 1973-08-09 1975-05-07 Schlecht K Mixing pump device
DE3013592C2 (en) * 1980-04-09 1983-09-29 P.F.T. Putz- und Fördertechnik GmbH, 8715 Iphofen Device for mixing, conveying and spraying plaster mortar
DE3240369A1 (en) * 1982-11-02 1984-05-10 Dietrich Dipl.-Ing. 6240 Königstein Maurer Device for mixing, feeding and spraying a mixture of dry powdery material and a fluid
ITBS940085A1 (en) * 1994-07-12 1996-01-12 Roberto Martinelli COMPATIBLE PLASTER MACHINE THAT CAN BE TRANSFORMED INTO ANOTHER MACHINE
CH689776A5 (en) * 1995-02-07 1999-10-29 Erhard Hermann Wiersbowsky Mixing and Foerdergeraet for a plastic material, in particular a plaster.

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Title
See references of WO9902249A1 *

Also Published As

Publication number Publication date
HUP0004866A3 (en) 2002-01-28
DE19729196C2 (en) 2000-03-23
WO1999002249A1 (en) 1999-01-21
PL337901A1 (en) 2000-09-11
YU700A (en) 2001-09-28
SK82000A3 (en) 2000-06-12
HUP0004866A2 (en) 2001-05-28
DE19729196A1 (en) 1999-01-14

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