EP0255633B1 - Method and device for making binding material or for mixing sludge - Google Patents

Method and device for making binding material or for mixing sludge Download PDF

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Publication number
EP0255633B1
EP0255633B1 EP87110345A EP87110345A EP0255633B1 EP 0255633 B1 EP0255633 B1 EP 0255633B1 EP 87110345 A EP87110345 A EP 87110345A EP 87110345 A EP87110345 A EP 87110345A EP 0255633 B1 EP0255633 B1 EP 0255633B1
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EP
European Patent Office
Prior art keywords
mixing chamber
mixing
horizontal
vertical
ized
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EP87110345A
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German (de)
French (fr)
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EP0255633A2 (en
EP0255633A3 (en
Inventor
Bernhard Mathis
Franz Mathis
Wilhelm Zimmerer
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m-tec mathis technik GmbH
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m-tec mathis technik GmbH
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Priority to AT87110345T priority Critical patent/ATE59595T1/en
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Publication of EP0255633A3 publication Critical patent/EP0255633A3/en
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    • 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
    • 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
    • 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
    • B28C5/1276—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 consecutive separate containers with rotating stirring and feeding or discharging means
    • B28C5/1284—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 consecutive separate containers with rotating stirring and feeding or discharging means having a feeding hopper and consecutive vertical or inclined mixing container fed at its upper part

Definitions

  • the invention relates to a method and a device for mixing mortar, plaster, concrete or the like.
  • wet mixtures e.g. Lime milk
  • the free-flowing material being fed to a metering device and then mixed with liquid, mixed and conveyed at the same time, the substantially dry material or mix being fed to the metering device from a loading container and the mixture after being mixed with liquid in a downward direction and is guided, conveyed and mixed in an approximately horizontal direction.
  • DE-A-27 01 508 has already disclosed such a method for preparing setting material.
  • the metering device is followed by a vertical mixing device, within which the dry material is subject to gravity. Near the lower end of this vertical mixer, the liquid is supplied for mixing, so that within the vertical mixer for the actual mixing process between the initially free-flowing dry material and the liquid there is hardly any time left.
  • the actual mixing process for mixing or mixing takes place in a horizontal mixing device located below the vertical mixing device, so that the above-mentioned vertically arranged mixing device more represents the role of a transfer station for the material and the liquid.
  • the required dwell time of the mix for mixing is aimed at in the connected horizontal mixing area.
  • EP-BO 051 224 has therefore disclosed a method and a device for the continuous preparation, in particular of building material mixtures, with water, in which the material is conveyed substantially horizontally after leaving the loading container, the mixing zone, in which the water is supplied, being arranged horizontally behind the metering device and the material mixed with water being subjected to counter-conveyance before it leaves the mixing zone which is less than the funding in the funding direction.
  • a device for mixing and conveying building materials is also known from DE-AS 28 02 683, in which the mixing container can be pivoted about an essentially horizontal axis passing through the center of the recess provided in the wall of the respective storage container, so that it is optionally arranged horizontally, at an angle or vertically. This should make it possible to adapt to different grain structures in the mixture. However, an extension of the dwell time in the mixing area and, above all, an increase in air pore formation is not possible, unless special chemical air pore formers are added.
  • Another device for continuously mixing a building material with water is from DE-OS 24 07 657 known.
  • the loading container is arranged on the side of the mixing device and contains an inclined feed wheel which conveys the mixture from the storage container in its upper edge region and into the upper inlet of the vertical mixing device. Mixing takes place in the vertical mixing tube, so that again only a very limited mixing time is available.
  • the invention is therefore based on the object of providing a method and a device of the type mentioned at the outset, with which the advantages of metering the substantially dry mixture before the addition of mixing liquid or mixing water and mixing with this liquid are retained in an approximately horizontal direction , but still the dwell time without the risk of a backlog of moisture in the dosing area increased significantly, thus intensifying the entire mixing process and possibly improving the mixing in of air, without the entire mixing device - possibly underneath the loading or storage container or silo - being too long and too long protrudes well beyond the outline of this container.
  • the best possible supply of the prepared mixture to a pump that conveys it should be possible, whereby inhomogeneities should be avoided as far as possible even after a certain wear of the pump.
  • the solution to this apparently contradictory task according to the invention consists in the process that the mixed liquid mixture is first conveyed and mixed in an approximately horizontal and then in a downward direction.
  • the mixture is deflected from the approximately horizontal conveying direction into a vertical or almost vertical direction.
  • it can again be thoroughly mixed with entrained air, the gravity and the deflection promoting the entrainment of air and also the supply to a feed pump located below the vertical mixing zone.
  • a device for performing the aforementioned method according to the invention can consist in that a downwardly directed mixing chamber is connected to a mouth of a substantially horizontally arranged mixing chamber with a horizontal mixing shaft, in which another mixing tool rotates, and that Connection for supplying the liquid to the initially dry material or material to be mixed is provided at the horizontal mixing chamber at a distance from its mouth.
  • the downward-pointing mixing chamber can expediently be arranged approximately vertically and have entry into a feed pump at its lower mouth. This also enables a convenient and inexpensive arrangement of the mixer shaft, the motor of which can be arranged above this vertical mixing chamber, while the motor for the horizontal mixing device can be mounted in a known manner, for example in front of the feed area of the mixing device.
  • An inlet opening for air and for observing the mixing process can be provided above the vertical mixing chamber. This allows good monitoring of the mixture and, moreover, there is the possibility that, in the event of an unwanted jam, due to the conveying movement of the horizontal mixing tool, the material taken up is kept away from the dry metering area and discharged through this overflow opening. Since the mixture already contains water in this area, there is no dust at the opening.
  • the vertical mixing chamber can be very simple in construction, since it does not require any precautions for the supply of water and for sufficient retention of the mixture in this area exposed to gravity in order to ensure thorough mixing with the To cause water, because this mixing in the horizontal area can already be largely completed and the ver tical area only serves to strengthen the mixture and to enter air pores. Nevertheless, the overall length of the device is not, or not significantly, increased since, in contrast to the main mixture, this post-mixing does not take place in the horizontal but in the vertical direction.
  • An embodiment of the invention of considerable importance can be that a probe, a sensor or the like in the downward mixing area. Arranged sensor which controls at least the drive of the horizontal mixing device and / or water supply. Should there be a backflow in the vertical area due to a too small decrease in the finished mixture with the feed pump, the further replenishment from the horizontal area can be switched off in good time so that an overflow at the overflow opening is avoided.
  • the vertical mixing chamber can be arranged via a joint, hinge or the like arranged to the side of the mouth of the horizontal mixing chamber. with preferably a vertical pivot axis from the mouth of the horizontal mixing chamber can be pivoted away. This makes the horizontal mixing chamber easily accessible for cleaning. At the same time, this results in an even better cleaning option for the vertical mixing chamber, because it then both from the then open inlet opening as well as can be flushed out from the ventilation or overflow opening.
  • the motor for the vertical mixing drive can simultaneously drive the feed pump, which is preferably arranged coaxially thereto.
  • a design which improves the handling of the device, in particular the removal of the horizontal mixer shaft e.g. can facilitate cleaning purposes, may be that at the end of the horizontal mixing chamber an axial stop is provided for the end face of the horizontal mixer shaft, which stop - especially when the vertical mixing chamber is removed - can be moved away from the mouth of the horizontal mixing chamber, preferably pivoted away.
  • This measure has the considerable advantage that the mixer shaft can be driven at its end opposite the mouth of the mixing chamber by means of a simple plug-in coupling, because it is held in the axial direction by the stop. If this stop is moved away, the mixer shaft can simply be pulled forward out of the mouth of the horizontal mixing chamber without any special effort.
  • the stop for the end face of the horizontal mixer shaft is designed as a flat plate, at least on the side facing this mixer shaft.
  • the stop is attached to the housing of the vertical mixing chamber and can be pivoted away from it with the mouth of the horizontal mixing chamber.
  • Another solution is to swing the vertical Allowed mixing chamber without axial release of the mixer shaft, may consist in that the stop is articulated independently of the vertical mixing chamber on pivot hinges, which are opposite the pivot hinges for the vertical mixing chamber at the mouth of the horizontal mixing chamber, and that a holder for the stop in its position of use is provided.
  • the vertical mixing chamber can thus be pivoted about its hinges with respect to the horizontal mixing chamber and the stop can be kept in the position of use.
  • the vertical mixing chamber has been swung open, it in turn can be opened and pivoted away from the mouth of the horizontal mixing chamber in order to make the horizontal mixer shaft accessible with the mixing tools.
  • the lower edge of the side opening can be at the level of the lower limit of the metering channel or slightly lower. If accumulated material builds up, it can flow out through this opening before it can be accumulated through the horizontal mixing chamber up to the dosing area.
  • a further embodiment of the device according to the invention can consist in that more than one horizontal mixing chamber with water connection, preferably two horizontal mixing chambers, in particular opposite one another, open out at the vertical mixing chamber. This results in the considerable possibility of merging two largely mixed mixtures and finally verifying them vertically mix, which is particularly useful for those mixtures that have a large number of components. Another possibility is to use a second horizontal mixing chamber, for example, for color components or the like. feed, which could also happen through the side opening.
  • the mixing tools can therefore only be used to produce an intensive mixing action and thereby also form a trombone, whereby this trombone can also have a good suction effect for air in a vertical arrangement of the downstream mixing tools, so that a correspondingly large number of air pores without chemical additives can be entered.
  • This intensive processing of the mixture does not practically increase the extent of the device transversely to the axis of a storage silo, under which the device can be attached directly, so that the road transport of such a storage silo with a mixing device attached to it remains possible.
  • Another significant advantage of the device according to the invention and the corresponding method is in that both the pre-mixing time and the post-mixing time can be controlled, for example by different engine speeds and running times, since each mixing area and each mixing device has its own drive motor.
  • a device designated as a whole by 1, shown in detail in FIG. 2, is used for mixing mortar, plaster, concrete or the like. setting material with a liquid, this material according to FIG. 1 coming from a storage silo 2 with feet 3 into a loading area 4.
  • the entry 5 of the loading area 4 of the device 1 could also be with another, e.g. a smaller loading container for bagged goods can be loaded; if necessary, several inlets 5 could be provided in the loading area 4, for example an inlet 5 connected to a storage silo 2 and an adjacent inlet 5 for bagged goods.
  • the material reaches a metering device 7 with the aid of a screw conveyor 6, which in the exemplary embodiment is formed by a metering screw 8 coaxial with the screw conveyor 6 in a metering channel 9.
  • the metering device 7 opens into a mixing chamber 10 which has an inlet 11 for liquid, preferably water.
  • a mixing chamber 10 which has an inlet 11 for liquid, preferably water.
  • this mixing chamber 10 like the metering device 7 and also the loading container 4, being arranged essentially horizontally and penetrated by a coaxial shaft 13 which has a drive motor 14.
  • this second mixing chamber 16 is arranged vertically and has a feed pump 20 at its mouth 18 below its mixing tools 17 coaxial with its mixer shaft 19. A deflection of approximately 90 ° therefore takes place from the mixing chamber 10 to the mixing chamber 16.
  • the mixer shaft 19, which is directly connected to the feed pump 20, has its own drive motor 21, which is arranged above the vertical mixing chamber 16.
  • the mixture can thus be guided and conveyed in an approximately horizontal direction when being mixed with water and then deflected in a downward direction and mixed further in this downward region.
  • the mixing tools 17 in the vertical mixing chamber 16 can generate a vortex in the mixture, which can suck air into the mixture in order to increase the number of air pores.
  • this additional mixing chamber 16 hardly increases the extent of the device 1 transversely to the silo axis, so that the device 1 can still be conveniently accommodated approximately in the outline of the storage silo 2, that is to say with the silo 2 can be transported together on a road vehicle.
  • a probe 24 can be arranged which can at least control the drive of the horizontal mixing device and / or the water supply.
  • Fig. 1 it is also indicated that the vertical mixing chamber 16 with the feed pump 20 attached thereto and the drive motor 21 is arranged pivotably away from the mouth 15 of the horizontal mixing chamber 10 via a joint or hinge 25 arranged laterally of the mouth 15 with a vertical pivot axis.
  • This results in good accessibility of the horizontal mixing chamber 10 from its mouth 15, so that cleaning of this area is possible in a simple manner.
  • this results in an improved cleaning possibility for the vertical mixing chamber 16, which is then accessible from the exposed opening for the mouth 15 and - if present - from the opening and can be flushed through.
  • the vertical mixing chamber 16 could, if necessary, even be detachably attached to the horizontal mixing chamber 10, so that it could be removed or could remain in those cases in which such an intensive mixing of the material, especially with air, is not required. This allows the versatility of the device 1 to be increased. If a relatively short mixing time is sufficient, the vertical mixing device or the mixing chamber 16 can either be pivoted out of the mouth region 15 with the aid of the hinge 25 or removed completely, so that the mixture behind the horizontal mixing chamber 10 can then be removed immediately.
  • a mixing device with a horizontal mixing chamber 10 can also be provided retrospectively with a vertical mixing chamber 16 with a mixing tool 17, feed pump 20 and drive motor 21, so that the already known and existing approximately horizontal mixing devices can subsequently be used in the manner according to the invention.
  • the mixing chamber 10 could possibly be shortened compared to the exemplary embodiment, so that the vertical mixing area can be accommodated even better within the silo outline, because the addition of the two mixing chambers 10 and 16 intensified into a shortened mixing chamber 10 Mixing the prepared material with water and air leads.
  • the device 1 can be used continuously or in batches, in the former case the pump 20 continuously conveying the material which has been mixed and which was previously mixed.
  • the feed pump 20 is occasionally switched off, so that at least after a certain backflow time, the mixing device 12 and thus the further supply of dry material is then preferably interrupted via the probe 24.
  • an axial stop 26 is provided for the end face of the horizontal mixer shaft 13 at the end of the horizontal mixing chamber 10, which stop 26 in turn moves from the vertical mixing chamber 16 when the vertical mixing chamber 16 is moved away from the mouth 15 of the horizontal mixing chamber 10
  • the mouth 15 can be moved away, preferably swung away, so that the mixer shaft 13 with the mixing tools 12 is accessible from the mouth 15 and can be pulled out for cleaning or repair purposes, for example.
  • This has the advantage that a simple plug-in coupling for the drive is sufficient at its end facing away from the mouth 15.
  • This stop 26 is designed in a practical and simple manner as a flat plate.
  • this stop is 26 attached to the housing of the vertical mixing chamber 16 and thus together with this pivotable away from the mouth 15 of the horizontal mixing chamber 10 about the hinges 25.
  • Fig. 4 shows a solution in which the stop 26 is articulated independently of the vertical mixing chamber 16 on pivot hinges 27, which are opposite the pivot hinges 25 for the vertical mixing chamber 16 at the mouth 15 of the horizontal mixing chamber 10, these pivot hinges 25 in Fig. 4 are not shown for better clarity.
  • a holder 28 can be seen schematically in FIG. 4, by means of which the stop 26 can be fixed in its position of use, so that it is not inadvertently also pivoted open when the vertical mixing chamber 16 is pivoted away.
  • the plug-in coupling 29 mentioned for the mixer shaft 13 is indicated schematically in FIG. 2 at the end of the metering area 9.
  • the lower edge 30 of the lateral opening 22 is arranged at the level of the lower limit of the metering channel 9 or somewhat lower, so that in the event of a backlog of material in the vertical mixing chamber 16, this material does not reach the metering area 9 can reach and moisten the material that is still dry there, but can emerge from the opening 22 beforehand. This therefore represents an additional safety measure for the probe 24 and could even make a probe 24 unnecessary in simpler embodiments.
  • FIG. 5 shows an embodiment in which two horizontal mixing chambers 10, approximately opposite one another, open at the vertical mixing chamber 16 Mixing products in the vertical mixing chamber 16 can advantageously be mixed with one another.
  • the structure of the horizontal mixing chamber 10 and the vertical mixing chamber 16 corresponds to the previously described embodiments.

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  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Processing Of Solid Wastes (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Food-Manufacturing Devices (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Fats And Perfumes (AREA)
  • Treatment Of Sludge (AREA)
  • Catching Or Destruction (AREA)
  • Accessories For Mixers (AREA)

Abstract

A device (1) is used to make up binding material with liquid, the material being conveyed via a charging region (4) and a metering device (7) into an essentially horizontal mixing chamber (10) and being mixed therein with water. Located at the mouth (15) of the mixing chamber (10) is a further mixing chamber (16) which is directed downwards and fitted with mixing tools (17) and which intensifies the mixing of the material already made up and extends the mixing time without the material accumulating backwards for this purpose inside its mixing chamber or having to be sent back. As a result, the introduction of air into the mixture can be improved at the same time without chemical pore formers or the like being required (Fig. 1). <IMAGE>

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Anmachen von Mörtel, Putz, Beton od.dgl. Baustoff oder abbindendem Material oder zum Anmischen von Schläm­men od.dgl. feuchten Mischungen, z.B. Kalkmilch, wobei das riesel­fähige Material einer Dosiervorrichtung zugeführt und danach mit Flüssigkeit versetzt, gleichzeitig gemischt und weiterbefördert wird, wobei das im wesentlichen trocke­ne Material oder Mischgut der Dosiervorrichtung aus einem Beschickungsbehälter zugeführt wird und die Mischung nach dem Anmachen mit Flüssigkeit in einer abwärts verlaufenden Richtung und in etwa hori­zontaler Richtung geführt, gefördert und gemischt wird.The invention relates to a method and a device for mixing mortar, plaster, concrete or the like. Building material or setting material or for mixing sludge or the like. wet mixtures, e.g. Lime milk, the free-flowing material being fed to a metering device and then mixed with liquid, mixed and conveyed at the same time, the substantially dry material or mix being fed to the metering device from a loading container and the mixture after being mixed with liquid in a downward direction and is guided, conveyed and mixed in an approximately horizontal direction.

Aus der DE-A-27 01 508 ist bereits ein derartiges Verfahren zum Anmachen von abbindendem Material bekannt geworden. Dabei schließt sich an die Dosiervorrichtung zunächst eine vertikale Mischvor­richtung an, innerhalb welcher also das trocken zuge­führte Material der Schwerkraft unterliegt. Nahe dem unteren Ende dieser vertikalen Mischvorrichtung wird die Flüssigkeit zum Anmachen zugeführt, so daß inner­halb dieser vertikalen Mischvorrichtung für den eigentlichen Mischungsvorgang zwischen dem zunächst rieselfähigen trockenen Material und der Flüssigkeit kaum noch Zeit besteht. Der eigentliche Mischvorgang zum Anmachen oder Anmischen erfolgt in einer sich unterhalb der vertikalen Mischvorrichtung befindlichen horizontalen Mischvorrichtung, so daß die erwähnte ver­tikal angeorndete Mischvorrichtung mehr die Rolle einer Übergabestation für das Material und die Flüssigkeit darstellt. Die erforderliche Verweilzeit des Misch­gutes für das Anmachen wird in dem angeschlossenen horizontalen Mischbereich angestrebt. Dabei ergibt sich das Problem, daß die im Anschluß an den gesamten Mischer befindliche Förderpumpe, mit welcher die an­gemachte Mischung ihrem Verwendungszweck zugeführt werden soll, einem hohen Verschleiß unterliegt. Die Zumischung der Flüssigkeit ist nun in aller Regel an die volle Förderleistung einer solchen Pumpe an­gepaßt. Kann eine solche Pumpe aufgrund des Ver­schleißes nur noch einen Teil ihrer Leistung erbringen, ergeben sich bei der horizontalen Zuführung einer an­gemachten Mischung, die ausschließlich mit Hilfe der Mischwerkzeuge erfolgt, Inhomogenitäten durch den am Pumpeneintritt auftretenden Stau. Durch einen solchen Stau muß damit gerechnet werden, daß diese Pumpe bevorzugt flüssigere Bestandteile der Mischung abfördert, anschließend dann die zunächst zurückblei­benden festeren Bestandteile doch auch befördert und so wieder eine teilweise Segregation oder Trennung der angemachten Mischung bewirkt. Mit einer nicht mehr voll leistungsfähigen Pumpe muß also bei dieser vor­bekannten Vorrichtung mit Inhomogenitäten bei der aus unterschiedlichsten Bestandteilen bestehenden Mischung gerechnet werden.DE-A-27 01 508 has already disclosed such a method for preparing setting material. The metering device is followed by a vertical mixing device, within which the dry material is subject to gravity. Near the lower end of this vertical mixer, the liquid is supplied for mixing, so that within the vertical mixer for the actual mixing process between the initially free-flowing dry material and the liquid there is hardly any time left. The actual mixing process for mixing or mixing takes place in a horizontal mixing device located below the vertical mixing device, so that the above-mentioned vertically arranged mixing device more represents the role of a transfer station for the material and the liquid. The required dwell time of the mix for mixing is aimed at in the connected horizontal mixing area. The problem arises here that the feed pump which is connected to the entire mixer and by means of which the mixed mixture is to be supplied for its intended use is subject to high wear. The admixture of the liquid is now generally adapted to the full delivery rate of such a pump. If such a pump can only perform part of its performance due to wear, there is inhomogeneity due to the jam occurring at the pump inlet when a mixed mixture is fed horizontally, which is done exclusively with the aid of the mixing tools. Due to such a build-up, it must be expected that this pump will preferentially discharge more liquid constituents of the mixture, but then convey the initially remaining solid constituents and thus again cause partial segregation or separation of the mixed mixture. With a pump that is no longer fully capable, inhomogeneities in the mixture consisting of the most varied components must be expected in this known device.

Es sind außerdem Vorrichtungen bekannt, mit denen Verfahren abweichender Gattung durchgeführt werden können:Devices are also known with which Processes of a different genus can be carried out:

Aus der DE-OS 23 40 246 ist eine Vorrichtung bekannt, die schräg unter dem Beschickungsbehälter angeordnet ist und deshalb zu einer ungleichmäßigen Mischung führt, da die Material-Wassermischung durch die Schwerkraft während der Mischung in eine unsymmetrisch zu den ko­axial in der schrägen Vorrichtung angeordneten Mischwerk­zeugen befindlichen Lage gebracht wird. Darüber hinaus besteht bei solchen, in der Regel zu einer Entmischung neigenden Komponenten durch die schräge Anordnung im Be­reich der Zuführung zu der Wasserzufuhr eine Entmischungs­gefahr, weil die Bestandteile unterschiedliche Gewichte haben, die dabei unterschiedlich gerichteten Kraftkompo­nenten ausgesetzt sind. Ferner werden die Lager, die Pumpe und die Mischwerkzeuge durch die schräge Anordnung einseitig stärker belastet.From DE-OS 23 40 246 a device is known which is arranged obliquely under the loading container and therefore leads to an uneven mixture, since the material-water mixture is arranged by gravity during the mixing in an asymmetrical to the coaxial in the oblique device Mixing tools located location is brought. In addition, there is a risk of segregation in such components, which tend to segregate due to the oblique arrangement in the area of the feed to the water supply, because the constituents have different weights which are exposed to differently directed force components. Furthermore, the bearings, the pump and the mixing tools are subjected to greater loads on one side due to the oblique arrangement.

Aus der DE-PS 33 26 247 ist deshalb eine Vorrichtung be­kannt, bei welcher die die Mischwerkzeuge tragende Mi­scherwelle im Bereich der Wasserzufuhr vertikal ange­ordnet ist und zur Verminderung der Entmischungsgefahr eine Vormischkammer in dieser Mischvorrichtung oberhalb der eigentlichen Mischkammer angeordnet ist. Diese Vorrichtung hat sich bewährt, weil sie eine gleichmäßi­gere Mischung ergibt und weil dabei der Entmischungsge­fahr vorgebeugt wird. Falls jedoch eine sehr innige Ver­mischung des Mischgutes mit Wasser unter möglichst großer Luftporenbildung erwünscht ist, ist diese Vor­richtung weniger geeignet, da das Mischgut sie aufgrund der vertikalen Anordnung relativ rasch durchläuft.From DE-PS 33 26 247 a device is known in which the mixer shaft carrying the mixing tools is arranged vertically in the area of the water supply and a pre-mixing chamber is arranged in this mixing device above the actual mixing chamber to reduce the risk of segregation. This device has proven itself because it produces a more uniform mixture and because it prevents the risk of segregation. If, however, a very intimate mixing of the mixed material with water with the greatest possible formation of air pores is desired, this device is less suitable because the mixed material passes through it relatively quickly due to the vertical arrangement.

Es ist deshalb aus der EP-B-O 051 224 ein Verfahren und eine Vorrichtung zum kontinuierlichen Anmachen insbe­sondere von Baustoffmichungen mit Wasser bekannt geworden, bei welchem das Material nach dem Verlassen des Beschickungsbehälters im wesentlichen horizontal be­fördert wird, wobei die Mischzone, in welcher das Was­ser zugeführt wird, in horizontaler Richtung hinter der Dosiervorrichtung angeordnet ist und das mit Was­ser angemachte Material vor dem Austritt aus der Misch­zone einer Gegenförderung ausgesetzt wird, die ge­ringer als die Förderung in Förderrichtung ist.EP-BO 051 224 has therefore disclosed a method and a device for the continuous preparation, in particular of building material mixtures, with water, in which the material is conveyed substantially horizontally after leaving the loading container, the mixing zone, in which the water is supplied, being arranged horizontally behind the metering device and the material mixed with water being subjected to counter-conveyance before it leaves the mixing zone which is less than the funding in the funding direction.

Dadurch wird die Verweilzeit in der Mischzone ver­größert, so daß das Eintragen von Luftblasen und Luft­poren verbessert werden kann. Dennoch ist die Ver­längerung der Verweilzeit durch diese Maßnahme dadurch begrenzt, daß ein zu starker Rückstau mit der Gefahr, daß Anmachwasser in den Dosierbereich oder gar in den Beschickungsbereich zurückgestaut werden kann, ver­mieden werden muß.This increases the residence time in the mixing zone, so that the introduction of air bubbles and air pores can be improved. Nevertheless, the extension of the dwell time is limited by this measure in that an excessive backwater with the risk that mixing water can be backed up into the metering area or even into the loading area must be avoided.

Es ist ferner eine Vorrichtung zum Mischen und Fördern von Baustoffen aus der DE-AS 28 02 683 bekannt, bei welcher der Mischbehälter um eine im wesentlichen waage­rechte, durch die Mitte der in der Wand des jeweiligen Vorratsbehälters vorgesehenen Aussparung gehende Achse geschwenkt werden kann, so daß er wahlweise horizontal, schräg oder vertikal angeordnet ist. Dadurch soll eine Anpassung an unterschiedlichen Kornaufbau in der Mischung möglich sein. Eine Verlängerung der Verweil­zeit im Mischungsbereich und vor allem eine Verstärkung einer Luftporenbildung ist dadurch jedoch nicht möglich, es sei denn, es werden spezielle chemische Luftporen­bildner zugesetzt.A device for mixing and conveying building materials is also known from DE-AS 28 02 683, in which the mixing container can be pivoted about an essentially horizontal axis passing through the center of the recess provided in the wall of the respective storage container, so that it is optionally arranged horizontally, at an angle or vertically. This should make it possible to adapt to different grain structures in the mixture. However, an extension of the dwell time in the mixing area and, above all, an increase in air pore formation is not possible, unless special chemical air pore formers are added.

Eine weitere Vorrichtung zum kontinuierlichen Mischen eines Baustoffes mit Wasser ist aus der DE-OS 24 07 657 bekannt. Dabei ist der Beschickungsbehälter seitlich der Mischvorrichtung angeordnet und enthält ein schräges Förderrad, welches die Mischung aus dem Vorratsbehälter in dessen oberen Randbereich und in den oberen Eintritt der vertikalen Mischvorrichtung befördert. Das Anmachen der Mischung erfolgt in dem vertikalen Mischrohr, so daß wiederum nur eine sehr begrenzte Mischzeit zur Ver­fügung steht.Another device for continuously mixing a building material with water is from DE-OS 24 07 657 known. The loading container is arranged on the side of the mixing device and contains an inclined feed wheel which conveys the mixture from the storage container in its upper edge region and into the upper inlet of the vertical mixing device. Mixing takes place in the vertical mixing tube, so that again only a very limited mixing time is available.

Ein weiteres Beispiel für eine schräg unterhalb eines Vorratssilos angeordnete Mischvorrichtung mit den schon erwähnten Nachteilen ist die DE-OS 23 23 196.Another example of a mixing device arranged obliquely below a storage silo with the disadvantages already mentioned is DE-OS 23 23 196.

Schließlich ist ganz allgemein beispielsweise aus der DE-AS 25 23 374 eine Lösung bekannt, bei welcher die an­gemachte Mischung in einen Zwischenbehälter fällt, an welchen die Förderpumpe angeschlossen ist, wobei dieser Zwischenbehälter eine Zufuhr bzw. Fördervorrich­tung zu der Pumpe hat. Als ungünstig ist dabei anzusehen, daß die Mischung nach ihrer Fertigstellung im freien Fall dem Zwischenbehälter zugeführt wird, also vor ihrer end­gültigen Verarbeitung schon einen Teil der Abbindezeit verbraucht. Darüber hinaus kann auf diese Weise die Mischzeit nicht vergrößert und somit der Luftporenan­teil ohne Zusatz chemischer Mittel nicht verbessert werden. Vielmehr besteht die Gefahr, daß bei der Förderung zur Pumpe Unhomogenitäten entstehen.Finally, a solution is known in very general terms, for example from DE-AS 25 23 374, in which the prepared mixture falls into an intermediate container to which the feed pump is connected, this intermediate container having a feed or conveying device to the pump. It is to be regarded as unfavorable that the mixture is fed to the intermediate container in free fall after its completion, that is to say that it consumes part of the setting time before it is finally processed. In addition, the mixing time cannot be increased in this way and thus the proportion of air pores cannot be improved without the addition of chemical agents. Rather, there is a risk that inhomogeneities arise when pumping to the pump.

Der Erfindung liegt deshalb die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs erwähnten Art zu schaffen, womit die Vorteile der Dosierung der im wesentlichen trockenen Mischung vor der Zufuhr von Anmachflüssigkeit oder Anmachwasser und das Vermischen mit dieser Flüssigkeit in einer etwa horizontalen Richtung erhalten bleiben, dennoch aber die Verweilzeit ohne Gefahr eines Rückstaues von Feuchtigkeit in den Dosierbereich erheblich gesteigert und so der gesamte Mischvorgang intensiviert und gegebenenfalls die Ein­mischung von Luft verbessert wird, ohne daß die ge­samte Mischvorrichtung - ggfs. unterhalb des Be­schickungs- oder Vorratsbehälters oder Silos - eine zu große Länge erhält und zu weit über den Umriß dieses Behälters vorsteht. Gleichzeitig soll eine bestmögliche Zufuhr der angemachten Mischung zu einer sie weiterbe­fördernden Pumpe möglich sein, wobei selbst nach einem gewissen Verschleiß der Pumpe Inhomogenitäten weitest­gehend vermieden werden sollen.The invention is therefore based on the object of providing a method and a device of the type mentioned at the outset, with which the advantages of metering the substantially dry mixture before the addition of mixing liquid or mixing water and mixing with this liquid are retained in an approximately horizontal direction , but still the dwell time without the risk of a backlog of moisture in the dosing area increased significantly, thus intensifying the entire mixing process and possibly improving the mixing in of air, without the entire mixing device - possibly underneath the loading or storage container or silo - being too long and too long protrudes well beyond the outline of this container. At the same time, the best possible supply of the prepared mixture to a pump that conveys it should be possible, whereby inhomogeneities should be avoided as far as possible even after a certain wear of the pump.

Die erfindungsgemäße Lösung dieser scheinbar wider­sprüchlichen Aufgabe besteht verfahrensmäßig darin, daß die mit Flüssigkeit versetzte Mischung zuerst in etwa horizontaler und dann in abwärts verlaufender Richtung gefördert und gemischt wird.The solution to this apparently contradictory task according to the invention consists in the process that the mixed liquid mixture is first conveyed and mixed in an approximately horizontal and then in a downward direction.

Statt also die Mischung in einem horizontalen Bereich einer Gegenförderung auszusetzen, durch welche sie ge­wissermaßen an Ort und Stelle verbleibt, wird sie nun ständig weiterbewegt und dennoch einer längeren und in­tensiveren Beaufschlagung mit Mischwerkzeugen ausge­setzt, so daß auch mehr Möglichkeiten bestehen, Luft­poren einzutragen, als wenn die Mischung praktisch auf der Stelle immer wieder umgewälzt wird. Da das An­mischen in einem horizontalen Bereich beginnt, wo die gesamte Mischung nicht der Schwerkraft ausgesetzt ist, kann eine wesentlich intensivere Anmischung erfolgen, die dann in dem nachgeschalteten, abwärts gerichteten Bereich noch gesteigert wird. Gleichzeitig ergibt sich eine bessere Zufuhr der angemachten Mischung zu der Pumpe, weil die Zufuhr zur Pumpe dann in diesem abwärts gerichteten Bereich in vorteilhafter Weise durch die Schwerkraft unterstützt wird. Selbst nach einem gewissen Verschleiß der Pumpe kann an deren Eintritt praktisch keine Inhomogenität erzeugt werden, weil das wesentlich intensiver vermischte Material sehr gleichmäßig und von der Schwerkraft unterstützt zugeführt wird.So instead of exposing the mixture in a horizontal area to a counter-conveyance, through which it remains to a certain extent in place, it is now constantly being moved and still subjected to a longer and more intensive exposure to mixing tools, so that there are more possibilities to enter air pores than if the mixture is circulated practically on the spot. Since the mixing begins in a horizontal area, where the entire mixture is not exposed to gravity, a much more intensive mixing can take place, which is then increased in the downstream, downward-facing area. At the same time, there is a better supply of the prepared mixture to the pump, because the supply to the pump is then advantageously carried out in this downward region Gravity is supported. Even after a certain amount of wear on the pump, practically no inhomogeneity can be generated at the inlet because the material, which is mixed much more intensively, is supplied very evenly and supported by gravity.

Statt also die Mischung einer Gegenförderung auszu­setzen, durch welche sie gewissermaßen an Ort und Stelle verbleibt, wird die Mischung nun ständig weiter bewegt und dennoch einer wesentlich längeren und intensiveren Beaufschlagung mit Mischwerkzeugen ausgesetzt, so daß auch mehr Möglichkeit besteht, Luftporen einzutragen, als wenn eine Mischung praktisch auf der Stelle immer wieder umgewälzt wird.So instead of exposing the mixture to counter-conveyance, through which it remains to a certain extent in place, the mixture is now constantly moved further and is nevertheless subjected to a much longer and more intensive exposure to mixing tools, so that there is also more possibility of entering air pores than if one were Mixing is practically circulated on the spot.

Besonders zweckmäßig ist es, wenn die Mischung aus der etwa horizontalen Förderrichtung in eine vertikale oder nahezu vertikale Richtung umgelenkt wird. Während dieser zweiten Phase der Mischung kann sie noch einmal gründlich auch mit mitgezogener Luft gemischt werden, wobei die Schwerkraft und die Umlenkung das Mitreißen von Luft und außerdem die Zufuhr zu einer unterhalb der verti­kalen Mischzone befindlichen Förderpumpe begünstigt. Versuche haben gezeigt, daß auf diese Weise ohne Ver­größerung der Wasserzufuhr und vor allem ohne Zufuhr von Luftporenbildnern, Quellmitteln od.dgl. die Ein­bringung von Luft in die Mischung erheblich verbessert werden konnte.It is particularly expedient if the mixture is deflected from the approximately horizontal conveying direction into a vertical or almost vertical direction. During this second phase of the mixing, it can again be thoroughly mixed with entrained air, the gravity and the deflection promoting the entrainment of air and also the supply to a feed pump located below the vertical mixing zone. Experiments have shown that in this way without increasing the water supply and especially without the addition of air entraining agents, swelling agents or the like. the introduction of air into the mixture could be significantly improved.

Eine Vorrichtung zur Durchführung des vorerwähnten er­findungsgemäßen Verfahrens kann darin bestehen, daß an einer im wesentlichen horizontal angeordneten Mischkam­mer mit horizontaler Mischwelle an deren Mündung eine nach unten gerichtete Mischkammer angeschlossen ist, in welcher ein weiteres Mischwerkzeug rotiert, und daß der Anschluß zur Zufuhr der Flüssigkeit zu dem zunächst trockenen Material oder Mischgut an der horizontalen Mischkammer mit Abstand vor deren Mündung vorgesehen ist.A device for performing the aforementioned method according to the invention can consist in that a downwardly directed mixing chamber is connected to a mouth of a substantially horizontally arranged mixing chamber with a horizontal mixing shaft, in which another mixing tool rotates, and that Connection for supplying the liquid to the initially dry material or material to be mixed is provided at the horizontal mixing chamber at a distance from its mouth.

Dabei ist es vorteilhaft, wenn die Umlenkung von der horizontalen in die abwärts gerichtete Mischkammer etwa 90° beträgt. Die abwärts gerichtete Mischkammer kann dabei zweckmäßigerweise etwa vertikal angeordnet und an ihrer unteren MÜndung den Eintritt in eine Förderpumpe haben. Dies ermöglicht auch eine zweckmäßige und günstige Anordnung der Mischerwelle, deren Motor oberhalb dieser vertikalen Mischkammer angeordnet sein kann, während der Motor für die horizontale Mischvorrichtung in be­kannter Weise beispielsweise vor dem Zufuhrbereich der Mischvorrichtung gelagert sein kann.It is advantageous if the deflection from the horizontal into the downward mixing chamber is approximately 90 °. The downward-pointing mixing chamber can expediently be arranged approximately vertically and have entry into a feed pump at its lower mouth. This also enables a convenient and inexpensive arrangement of the mixer shaft, the motor of which can be arranged above this vertical mixing chamber, while the motor for the horizontal mixing device can be mounted in a known manner, for example in front of the feed area of the mixing device.

Oberhalb der vertikalen Mischkammer kann eine Eintritts­öffnung für Luft und zur Beobachtung des Mischvorganges vorgesehen sein. Dadurch ist eine gute Überwachung der Mischung möglich und darüber hinaus ergibt sich so die Möglichkeit, daß bei einem ungewollten Stau das ange­machte Material aufgrund der Förderbewegung des hori­zontalen Mischwerkzeuges von dem trockenen Dosierbereich ferngehalten und durch diese Überlauföffnung abgeführt wird. Da die Mischung in diesem Bereich schon Wasser enthält, entsteht an der Öffnung kein Staub. Ein weiterer Vorteil ist darin zu sehen, daß die vertikale Mischkammer im Aufbau sehr einfach sein kann, da bei ihr keinerlei Vorkehrungen zur Zufuhr von Wasser und zur genügend langen Zurückhaltung der Mischung in diesem der Schwer­kraft ausgesetzten Bereich erforderlich sind, um eine intensive Durchmischung mit dem Wasser zu be­wirken, weil diese Durchmischung im horizontalen Be-reich bereits weitgehend abgeschlossen sein kann und der ver­ tikale Bereich nur zur Verstärkung der Mischung und zur Eintragung von Luftporen dient. Dennoch wird die Ge­samtlänge der Vorrichtung nicht oder nicht wesentlich vergrößert, da diese Nachmischung im Gegensatz zur Hauptmischung nicht in horizontaler, sondern in verti­kaler Richtung stattfindet.An inlet opening for air and for observing the mixing process can be provided above the vertical mixing chamber. This allows good monitoring of the mixture and, moreover, there is the possibility that, in the event of an unwanted jam, due to the conveying movement of the horizontal mixing tool, the material taken up is kept away from the dry metering area and discharged through this overflow opening. Since the mixture already contains water in this area, there is no dust at the opening. Another advantage can be seen in the fact that the vertical mixing chamber can be very simple in construction, since it does not require any precautions for the supply of water and for sufficient retention of the mixture in this area exposed to gravity in order to ensure thorough mixing with the To cause water, because this mixing in the horizontal area can already be largely completed and the ver tical area only serves to strengthen the mixture and to enter air pores. Nevertheless, the overall length of the device is not, or not significantly, increased since, in contrast to the main mixture, this post-mixing does not take place in the horizontal but in the vertical direction.

Versuche haben gezeigt, daß eine so hergestellte Mischung wesentlich sämiger und geschmeidiger ist, so daß sie nicht nur besser mit einer Pumpe befördert werden kann, son­dern die entsprechende Pumpe auch trotz der abrasiven Bestandteile dieser Mischung eine höhere Lebensdauer erhält.Experiments have shown that a mixture produced in this way is much smoother and smoother, so that not only can it be better transported by a pump, but the corresponding pump also has a longer service life despite the abrasive components of this mixture.

Eine Ausgestaltung der Erfindung von erheblicher Bedeu­tung kann darin bestehen, daß in dem nach unten gerich­teten Mischbereich eine Sonde, ein Sensor od.dgl. Fühler angeordnet ist, der wenigstens den Antrieb der horizon­talen Mischvorrichtung und/ oder Wasserzufuhr ansteuert. Sollte aufgrund einer zu geringen Abnahme der fertigen Mischung mit der Förderpumpe im vertikalen Bereich ein Rückstau entstehen, kann auf diese Weise der weitere Nachschub aus dem horizontalen Bereich rechtzeitig abge­schaltet werden, so daß ein Überlauf an der Überlauf­öffnung vermieden wird.An embodiment of the invention of considerable importance can be that a probe, a sensor or the like in the downward mixing area. Arranged sensor which controls at least the drive of the horizontal mixing device and / or water supply. Should there be a backflow in the vertical area due to a too small decrease in the finished mixture with the feed pump, the further replenishment from the horizontal area can be switched off in good time so that an overflow at the overflow opening is avoided.

Die vertikale Mischkammer kann über ein seitlich der Mündung der horizontalen Mischkammer angeordnetes Gelenk, Scharnier od.dgl. mit vorzugsweise vertikaler Schwenk­achse von der Mündung der horizontalen Mischkammer weg schwenkbar angeordnet sein. Dadurch wird die Zugänglich­keit der horizontalen Mischkammer für deren Reinigung auf einfache Weise erreicht. Gleichzeitig ergibt sich so eine noch bessere Reinigungsmöglichkeit für die verti­kale Mischkammer, weil diese dann sowohl von der dann offnen zutage liegenden Eintrittsöffnung als auch von der Belüftungs- oder Überlauföffnung her durchgespült werden kann. Der Motor für den vertikalen Mischantrieb kann dabei gleichzeitig die vorzugsweise koaxial dazu an­geordnete Förderpumpe antreiben.The vertical mixing chamber can be arranged via a joint, hinge or the like arranged to the side of the mouth of the horizontal mixing chamber. with preferably a vertical pivot axis from the mouth of the horizontal mixing chamber can be pivoted away. This makes the horizontal mixing chamber easily accessible for cleaning. At the same time, this results in an even better cleaning option for the vertical mixing chamber, because it then both from the then open inlet opening as well as can be flushed out from the ventilation or overflow opening. The motor for the vertical mixing drive can simultaneously drive the feed pump, which is preferably arranged coaxially thereto.

Eine die Handhabung der Vorrichtung verbessernde Ausge­staltung, die insbesondere das Entnehmen der horizonta­len Mischerwelle z.B. zu Reinigungszwecken erleichtern kann, kann darin bestehen, daß am Ende der horizontalen Mischkammer ein axialer Anschlag für die Stirnseite der horizontalen Mischerwelle vorgesehen ist, welcher An­schlag - insbesondere bei entfernter vertikaler Misch­kammer - von der Mündung der horizontalen Mischkammer wegbewegbar, vorzugsweise wegschwenkbar ist. Diese Maßnah­me hat den erheblichen Vorteil, daß die Mischerwelle an ihrem der Mündung der Mischkammer entgegengesetzten Ende mittels einer einfachen Steckkupplung angetrieben werden kann, weil sie in axialer Richtung von dem An­schlag gehalten wird. Wird dieser Anschlag wegbewegt, kann die Mischerwelle ohne besonderen Aufwand einfach nach vorne aus der Mündung der horizontalen Mischkammer herausgezogen werden.A design which improves the handling of the device, in particular the removal of the horizontal mixer shaft e.g. can facilitate cleaning purposes, may be that at the end of the horizontal mixing chamber an axial stop is provided for the end face of the horizontal mixer shaft, which stop - especially when the vertical mixing chamber is removed - can be moved away from the mouth of the horizontal mixing chamber, preferably pivoted away. This measure has the considerable advantage that the mixer shaft can be driven at its end opposite the mouth of the mixing chamber by means of a simple plug-in coupling, because it is held in the axial direction by the stop. If this stop is moved away, the mixer shaft can simply be pulled forward out of the mouth of the horizontal mixing chamber without any special effort.

Dabei genügt es, wenn der Anschlag für die Stirnseite der horizontalen Mischerwelle zumindest auf der dieser Mischerwelle zugewandten Seite als ebene Platte ausge­bildet ist.It is sufficient if the stop for the end face of the horizontal mixer shaft is designed as a flat plate, at least on the side facing this mixer shaft.

Eine Möglichkeit besteht dabei darin, daß der Anschlag an dem Gehäuse der vertikalen Mischkammer befestigt und zusammen mit dieser von der Mündung der horizontalen Mischkammer wegschwenkbar ist.One possibility is that the stop is attached to the housing of the vertical mixing chamber and can be pivoted away from it with the mouth of the horizontal mixing chamber.

Eine andere Lösung, die das Wegschwenken der vertikalen Mischkammer ohne axiale Freigabe der Mischerwelle er­laubt, kann darin bestehen, daß der Anschlag unabhängig von der vertikalen Mischkammer an Schwenkscharnieren angelenkt ist, die an der Mündung der horizontalen Misch­kammer den Schwenkscharnieren für die vertikale Misch­kammer gegenüberliegen, und daß eine Halterung für den Anschlag in seiner Gebrauchsstellung vorgesehen ist. Somit kann die vertikale Mischkammer um ihre Scharniere gegenüber der horizontalen Mischkammer verschwenkt werden und der Anschlag in Gebrauchsstellung gehalten bleiben. Er kann aber dann nach dem Aufschwenken der vertikalen Mischkammer seinerseits geöffnet und von der Mündung der horizontalen Mischkammer weggeschwenkt wer­den, um die horizontale Mischerwelle mit den Mischwerk­zeugen zugänglich zu machen.Another solution is to swing the vertical Allowed mixing chamber without axial release of the mixer shaft, may consist in that the stop is articulated independently of the vertical mixing chamber on pivot hinges, which are opposite the pivot hinges for the vertical mixing chamber at the mouth of the horizontal mixing chamber, and that a holder for the stop in its position of use is provided. The vertical mixing chamber can thus be pivoted about its hinges with respect to the horizontal mixing chamber and the stop can be kept in the position of use. However, after the vertical mixing chamber has been swung open, it in turn can be opened and pivoted away from the mouth of the horizontal mixing chamber in order to make the horizontal mixer shaft accessible with the mixing tools.

Um sicherzustellen, daß bei Fehlbedienungen oder Störungen und einem daraus resultierenden Rückstau von angemachtem Material keine Flüssigkeit bis in den Do­sierbereich des zunächst noch trockenen Materiales ge­langen kann, kann der untere Rand der seitlichen Öffnung auf der Höhe der unteren Begrenzung des Dosierkanales oder etwas tiefer liegen. Staut sich angemachtes Material an, kann es also durch diese Öffnung abfließen, bevor es durch die horizontale Mischkammer bis zu dem Dosierbereich angestaut werden kann.In order to ensure that in the event of incorrect operation or malfunctions and the resulting backlog of material, no liquid can get into the metering area of the initially dry material, the lower edge of the side opening can be at the level of the lower limit of the metering channel or slightly lower. If accumulated material builds up, it can flow out through this opening before it can be accumulated through the horizontal mixing chamber up to the dosing area.

Eine weitere Ausgestaltungsmöglichkeit der erfindungsge­mäßen Vorrichtung kann darin bestehen, daß an der ver­tikalen Mischkammer mehr als eine horizontale Misch­kammer mit Wasseranschluß, vorzugsweise zwei einander insbesondere gegenüberliegende horizontale Mischkammern münden. Dadurch ergibt sich die beachtliche Möglichkeit, zwei weitgehend angemachte Mischungen zusammenzuführen und ihrerseits im vertikalen Bereich endgültig zu ver­ mischen, was vor allem für solche Mischungen zweckmäßig ist, die sehr viele Bestandteile haben. Eine andere Möglichkeit besteht darin, durch eine zweite horizontale Mischkammer beispielsweise Farbkomponenten od.dgl. zuzu­führen,was allerdings auch durch die seitliche Öffnung geschehen könnte.A further embodiment of the device according to the invention can consist in that more than one horizontal mixing chamber with water connection, preferably two horizontal mixing chambers, in particular opposite one another, open out at the vertical mixing chamber. This results in the considerable possibility of merging two largely mixed mixtures and finally verifying them vertically mix, which is particularly useful for those mixtures that have a large number of components. Another possibility is to use a second horizontal mixing chamber, for example, for color components or the like. feed, which could also happen through the side opening.

Vor allem bei Kombination einzelner oder mehrerer der vorbeschriebenen Merkmale und Maßnahmen ergibt sich ein Verfahren und auch eine Vorrichtung, womit vor allem Baustoffe kontinuierlich oder auch chargenweise, also je nach Bedarf des Benutzers, mit Wasser angemacht und nach dem Anmachen gründlich nachgemischt werden können, ohne dabei die Mischung stauen zu müssen und so die Gefahr hervorzurufen, einen Rückstau zu bewirken. Dabei ist besonders vorteilhaft, daß die Nachmischung in einem nach unten gerichteten Bereich erfolgt, das Wasser jedoch vorher schon in einem horizontalen Bereich zuge­mischt wurde. In dem abwärts gerichteten Bereich können somit die Mischwerkzeuge ausschließlich dazu benutzt werden, eine intensive Mischwirkung und dabei auch eine Trombenbildung zu erzeugen, wobei diese Trombe bei einer vertikalen Anordnung der nachgeschalteten Mischwerkzeuge auch eine gute Saugwirkung für Luft haben kann, so daß entsprechend viele Luftporen ohne chemische Zusätze eingetragen werden können. Diese intensive Bearbeitung der Mischung vergrößert aber praktisch die Ausdehnung der Vorrichtung quer zur Achse eines Vorratssilos, unter welchem die Vorrichtung unmittelbar befestigt sein kann, nicht, so daß auch der Straßentransport eines solchen Vorratssilos mit daran befestigter Mischvorrichtung möglich bleibt.Especially when combining one or more of the features and measures described above, there is a method and also a device with which, above all, building materials can be mixed with water continuously or in batches, i.e. depending on the needs of the user, and can be thoroughly mixed after being put on without thereby having to back up the mixture and thus create the danger of causing a backflow. It is particularly advantageous that the remixing takes place in a downward-pointing area, but the water has previously been mixed in in a horizontal area. In the downward-facing area, the mixing tools can therefore only be used to produce an intensive mixing action and thereby also form a trombone, whereby this trombone can also have a good suction effect for air in a vertical arrangement of the downstream mixing tools, so that a correspondingly large number of air pores without chemical additives can be entered. This intensive processing of the mixture does not practically increase the extent of the device transversely to the axis of a storage silo, under which the device can be attached directly, so that the road transport of such a storage silo with a mixing device attached to it remains possible.

Ein weiterer erheblicher Vorteil der erfindungsgemäßen Vorrichtung und des entsprechenden Verfahrens besteht darin, daß sowohl die Vormischzeit als auch die Nach­mischzeit gesteuert werden können, z.B. durch verschie­dene Motordrehzahlen und -laufzeiten, da jeder Mischbe­reich und jede Mischvorichtung ihren eigenen Antriebs­motor hat.Another significant advantage of the device according to the invention and the corresponding method is in that both the pre-mixing time and the post-mixing time can be controlled, for example by different engine speeds and running times, since each mixing area and each mixing device has its own drive motor.

Nachstehend ist die Erfindung mit ihren ihr als wesent­lich zugehörenden Einzelheiten anhand der Zeichnung noch näher beschrieben.The invention is described in more detail below with its details that are essential to it, using the drawing.

Es zeigt:

  • Fig. 1 eine Ansicht eines Vorratssilos mit Füßen, unter dessen Auslauf eine erfindungsgemäße Vorrichtung zum Anmachen von abbindendem Bau­stoff befestigt ist,
  • Fig. 2 in vergrößertem Maßstab schematisiert einen Längsschnitt durch die Vorrichtung zum Mischen und Anmachen des Baustoffes gemäß Fig. 1,
  • Fig. 3 eine Teil-Ansicht der vertikalen Mischkammer, von der horizontalen Mischkammer aus gesehen, wobei diese horizontale Mischkammer wegge­lassen ist,
  • Fig. 4 eine Stirnansicht der horizontalen Mischkammer mit einem Axial-Anschlag für die Mischerwelle, wobei die an der horizontalen Mischkammer schwenkbar angelenkte vertikale Mischkammer weggelassen ist, sowie
  • Fig. 5 eine Ansicht einer abgewandelten Ausführungs­form, bei welcher zwei einander etwa gegen­überliegende horizontale Mischkammern an einer gemeinsamen vertikalen Mischkammer münden.
It shows:
  • 1 is a view of a storage silo with feet, under the outlet of which a device according to the invention for making setting building material is attached,
  • 2 schematically, on an enlarged scale, a longitudinal section through the device for mixing and mixing the building material according to FIG. 1,
  • 3 is a partial view of the vertical mixing chamber, seen from the horizontal mixing chamber, this horizontal mixing chamber being omitted,
  • Fig. 4 is an end view of the horizontal mixing chamber with an axial stop for the mixer shaft, wherein the vertical mixing chamber pivotally hinged to the horizontal mixing chamber is omitted, and
  • Fig. 5 is a view of a modified embodiment, in which two approximately opposite horizontal mixing chambers on one common vertical mixing chamber open.

Eine im ganzen mit 1 bezeichnete, in Fig. 2 im einzelnen dargestellte Vorrichtung dient zum Anmachen von Mörtel, Putz, Beton od.dgl. abbindendem Material mit einer Flüssigkeit, wobei dieses Material gemäß Fig. 1 aus einem Vorratssilo 2 mit Füßen 3 in einen Beschickungsbereich 4 gelangt. Der Eintritt 5 des Beschickungsbereiches 4 der Vorrichtung 1 könnte auch mit einem anderen, z.B. einem kleineren Beschickungsbehälter für Sackware beaufschlagt werden, ggfs. könnten im Beschickungsbereich 4 auch mehrere Eintritte 5, beispielsweise ein mit einem Vor­ratssilo 2 verbundener Eintritt 5 und ein daneben­liegender Eintritt 5 für Sackware vorgesehen sein.A device designated as a whole by 1, shown in detail in FIG. 2, is used for mixing mortar, plaster, concrete or the like. setting material with a liquid, this material according to FIG. 1 coming from a storage silo 2 with feet 3 into a loading area 4. The entry 5 of the loading area 4 of the device 1 could also be with another, e.g. a smaller loading container for bagged goods can be loaded; if necessary, several inlets 5 could be provided in the loading area 4, for example an inlet 5 connected to a storage silo 2 and an adjacent inlet 5 for bagged goods.

Von dem Beschickungsbereich gelangt das Material mit Hilfe einer Förderschnecke 6 in eine Dosiervorrichtung 7, die im Ausführungsbeispiel von einer zur Förder­schnecke 6 koaxialen Dosierschnecke 8 in einem Do­sierkanal 9 gebildet ist.From the loading area, the material reaches a metering device 7 with the aid of a screw conveyor 6, which in the exemplary embodiment is formed by a metering screw 8 coaxial with the screw conveyor 6 in a metering channel 9.

Die Dosiervorrichtung 7 mündet in eine Mischkammer 10, die einen Zulauf 11 für Flüssigkeit, vorzugsweise Wasser hat. In der Mischkammer 10 wird das zunächst trockene Material mit dem durch den Zulauf 11 zugeführten Wasser od.dgl. mit Hilfe der Mischwerkzeuge 12 vermischt, wobei diese Mischkammer 10 wie die Dosiervorrichtung 7 und auch der Beschickungsbehälter 4 im wesentlichen horizontal angeordnet und von einer koaxialen Welle 13 durchsetzt sind, die einen Antriebsmotor 14 hat.The metering device 7 opens into a mixing chamber 10 which has an inlet 11 for liquid, preferably water. In the mixing chamber 10, the initially dry material with the water supplied through the inlet 11 or the like. mixed with the aid of the mixing tools 12, this mixing chamber 10, like the metering device 7 and also the loading container 4, being arranged essentially horizontally and penetrated by a coaxial shaft 13 which has a drive motor 14.

In Fig. 1 und vor allem in Fig. 2 erkennt man, daß an der Mündung 15 der vorerwähnten, im wesentlichen horizontal angeordneten Mischkammer 10 mit der horizontalen Mischwelle 13 und den Mischwerkzeugen 12 eine weitere Mischkammer 16 angeschlossen ist, in welcher ein weiteres Mischwerkzeug rotieren kann, wobei diese zweite Mischkammer 16 nach unten gerichtet ist. Im Aus­führungsbeispiel ist dabei diese zweite Mischkammer 16 vertikal angeordnet und hat an ihrer Mündung 18 unter­halb ihrer Mischwerkzeuge 17 koaxial zu deren Mischerwelle 19 eine Förderpumpe 20. Es erfolgt also von der Mischkam­mer 10 zur Mischkammer 16 eine Umlenkung um etwa 90°. Die Mischerwelle 19, die mit der Förderpumpe 20 direkt ver­bunden ist, hat einen eigenen Antriebsmotor 21, der ober­halb der vertikalen Mischkammer 16 angeordnet ist. Mit Hilfe dieser Vorrichtung 1 kann also die Mischung beim Anmachen mit Wasser in etwa horizontaler Richtung ge­führt und gefördert und dann in eine abwärts verlaufende Richtung umgelenkt und in diesem abwärts gerichteten Be­reich weiter gemischt werden. Dabei braucht in dem ab­wärts gerichteten Bereich, d.h. in der vertikalen Misch­kammer 16 kein Wasser zugeführt zu werden, da die Mischung ihr Anmachwasser in diesen Bereich bereits mit­bringt. Durch die vertikale Anordnung können die Misch­werkzeuge 17 in der vertikalen Mischkammer 16 eine Trombe in der Mischung erzeugen, die Luft in die Mischung ein­saugen kann, um die Zahl der Luftporen zu erhöhen.In Fig. 1 and especially in Fig. 2 it can be seen that at the mouth 15 of the aforementioned, substantially horizontally arranged mixing chamber 10 with the horizontal mixing shaft 13 and the mixing tools 12, a further mixing chamber 16 is connected, in which a further mixing tool can rotate, this second mixing chamber 16 being directed downwards. In the exemplary embodiment, this second mixing chamber 16 is arranged vertically and has a feed pump 20 at its mouth 18 below its mixing tools 17 coaxial with its mixer shaft 19. A deflection of approximately 90 ° therefore takes place from the mixing chamber 10 to the mixing chamber 16. The mixer shaft 19, which is directly connected to the feed pump 20, has its own drive motor 21, which is arranged above the vertical mixing chamber 16. With the aid of this device 1, the mixture can thus be guided and conveyed in an approximately horizontal direction when being mixed with water and then deflected in a downward direction and mixed further in this downward region. No water needs to be supplied in the downward area, ie in the vertical mixing chamber 16, since the mixture already brings its mixing water into this area. Due to the vertical arrangement, the mixing tools 17 in the vertical mixing chamber 16 can generate a vortex in the mixture, which can suck air into the mixture in order to increase the number of air pores.

Dabei ist es gemäß Fig. 2 möglich, oberhalb der vertikalen Mischkammer 16 eine Eintrittsöffnung 22 für Luft und auch zur Beobachtung des Mischvorganges vorzusehen. Da die Mischung schon vorher mit Flüssigkeit versetzt und ver­mischt ist, ist eine Staubbildung an dieser Öffnung 22 ausgeschlossen. Ferner ergibt sich durch diese Öffnung 22 eine erhöhte Sicherung gegen einen Rückstau von feuchtem Material in die Dosiervorrichtung 7 oder gar noch davor, weil bei einem Rückstau beispielsweise bei gestörter oder stillgesetzter Förderpumpe 20 die Mischung durch die Öffnung 22 abfließen könnte.2, it is possible to provide an inlet opening 22 for air above the vertical mixing chamber 16 and also for observing the mixing process. Since the mixture has already been mixed and mixed with liquid beforehand, dust formation at this opening 22 is excluded. Furthermore, this opening 22 results in increased protection against backflow of moist material into the metering device 7 or even before that, because in the case of a backflow, for example in the event of a fault or stopped feed pump 20, the mixture could flow through the opening 22.

In Fig. 2 wird deutlich, daß die gesamte Vorrichtung im Aufbau sehr einfach ist, da diese zusätzliche vertikale Mischkammer 16 keinerlei Vorkehrungen für die Zufuhr von weiterem Wasser od.dgl. oder zur genügend langen Zurück­haltung der Mischung in diesem der Schwerkraft ausgesetzten Bereich erfordert, weil schon in der horizontalen Misch­kammer 10 eine weitgehende Durchmischung erfolgen kann, die in dem vertikalen Bereich und der vertikalen Misch­kammer 16 lediglich intensiviert und verstärkt werden soll, wobei weitere Luft in die Mischung eingetragen werden kann, ohne daß diese sozusagen auf der Stelle verbleiben muß, wie dies bei Mischern mit Stauvorrichtung der Fall ist.In Fig. 2 it is clear that the entire device is very simple in construction, since this additional vertical mixing chamber 16 no provisions or the like for the supply of further water. or for a sufficiently long retention of the mixture in this area exposed to gravity, because extensive mixing can already take place in the horizontal mixing chamber 10, which should only be intensified and intensified in the vertical area and the vertical mixing chamber 16, with further air into the Mixture can be entered without this, so to speak, having to remain in place, as is the case with mixers with a damming device.

Dabei erkennt man vor allem in Fig. 1 deutlich, daß diese zusätzliche Mischkammer 16 die Erstreckung der Vorrichtung 1 quer zur Siloachse kaum vergrößert, so daß sich die Vor­richtung 1 immer noch bequem etwa im Umriß des Vorrats­silos 2 unterbringen läßt, also mit dem Silo 2 gemeinsam auf einem Straßenfahrzeug befördert werden kann.1 that this additional mixing chamber 16 hardly increases the extent of the device 1 transversely to the silo axis, so that the device 1 can still be conveniently accommodated approximately in the outline of the storage silo 2, that is to say with the silo 2 can be transported together on a road vehicle.

In Fig. 2 ist noch angedeutet, daß in dem nach unten ge­richteten Mischbereich, d.h. in dem Übergangsraum 23 von der Mischkammer 10 zur Mischkammer 16 eine Sonde 24 ange­ordnet sein kann, die wenigstens den Antrieb der hori­zontalen Mischvorrichtung und/oder der Wasserzufuhr an­steuern kann. Damit kann bei einem Rückstau von der Förder­pumpe 20 her, d.h. bei ungenügender oder stockender Ab­nahme durch die Förderpumpe 20 und somit einem Aufstauen des Materials in der Mischkammer 16 bis in diesen Be­reich 23 hinein der weitere Nachschub der Mischung von der Mischkammer 10 her unterbunden werden.In Fig. 2 is also indicated that in the downward mixing area, ie in the transition space 23 from the mixing chamber 10 to the mixing chamber 16, a probe 24 can be arranged which can at least control the drive of the horizontal mixing device and / or the water supply. Thus, in the event of a backflow from the feed pump 20, ie in the event of insufficient or stagnant removal by the feed pump 20 and thus a build-up of the material in the mixing chamber 16 into this area 23, the further replenishment of the mixture from the mixing chamber 10 can be prevented.

In Fig. 1 ist noch angedeutet, daß die vertikale Mischkam­mer 16 mit der daran hängenden Förderpumpe 20 und dem An­triebsmotor 21 über ein seitlich der Mündung 15 angeord­netes Gelenk oder Scharnier 25 mit vertikaler Schwenkachse von der Mündung 15 her der horizontalen Mischkammer 10 weg­schwenkbar angeordnet ist. Dadurch ergibt sich eine gute Zugänglichkeit der horizontalen Mischkammer 10 von deren Mündung 15 her, so daß eine Reinigung dieses Bereiches auf einfache Weise möglich ist. Gleichzeitig ergibt sich so eine verbesserte Reinigungsmöglichkeit für die vertikale Mischkammer 16, die dann von der offen zutage liegenden Eintrittsöffnung für die Mündung 15 als auch - sofern vor­handen - von der Öffnung her zugänglich ist und durchgespült werden kann.In Fig. 1 it is also indicated that the vertical mixing chamber 16 with the feed pump 20 attached thereto and the drive motor 21 is arranged pivotably away from the mouth 15 of the horizontal mixing chamber 10 via a joint or hinge 25 arranged laterally of the mouth 15 with a vertical pivot axis. This results in good accessibility of the horizontal mixing chamber 10 from its mouth 15, so that cleaning of this area is possible in a simple manner. At the same time, this results in an improved cleaning possibility for the vertical mixing chamber 16, which is then accessible from the exposed opening for the mouth 15 and - if present - from the opening and can be flushed through.

Die vertikale Mischkammer 16 könnte ggfs. sogar lösbar an der horizontalen Mischkammer 10 befestigt sein, so daß sie in den Fällen ganz entfernt werden oder bleiben könnte, in denen eine derart intensive Durchmischung des Materiales vor allem auch mit Luft nicht benötigt wird. Dadurch kann die Vielseitigkeit der Vorrichtung 1 vergrößert werden. Reicht nämlich eine relativ kurze Mischzeit, kann die vertikale Mischvorrichtung bzw. die Mischkammer 16 ent­weder mit Hilfe des Scharnieres 25 aus dem MÜndungsbe­reich 15 herausgeschwenkt oder ganz abgenommen werden, so daß dann die Mischung hinter der horizontalen Mischkammer 10 sofort abgenommen werden kann.The vertical mixing chamber 16 could, if necessary, even be detachably attached to the horizontal mixing chamber 10, so that it could be removed or could remain in those cases in which such an intensive mixing of the material, especially with air, is not required. This allows the versatility of the device 1 to be increased. If a relatively short mixing time is sufficient, the vertical mixing device or the mixing chamber 16 can either be pivoted out of the mouth region 15 with the aid of the hinge 25 or removed completely, so that the mixture behind the horizontal mixing chamber 10 can then be removed immediately.

Umgegekehrt kann eine Mischvorrichtung nur mit horizontaler Mischkammer 10 auch nachträglich mit einer vertikalen Mischkammer 16 mit Mischwerkzeug 17, Förderpumpe 20 und Antriebsmotor 21 versehen werden, so daß die an sich schon bekannten und vorhandenen etwa horizontalen Mischvor­richtungen nachträglich in erfindungsgemäßer Weise be­nutzt werden können.Conversely, a mixing device with a horizontal mixing chamber 10 can also be provided retrospectively with a vertical mixing chamber 16 with a mixing tool 17, feed pump 20 and drive motor 21, so that the already known and existing approximately horizontal mixing devices can subsequently be used in the manner according to the invention.

Es sei ferner noch erwähnt, daß die Mischkammer 10 gegenüber dem Ausführungsbeispiel ggfs. noch verkürzt sein könnte, so daß der vertikale Mischbereich noch besser innerhalb des Siloumrisses untergebracht werden kann, weil die Addition der beiden Mischkammern 10 und 16 auchbei verkürzter Misch­kammer 10 zu einer intensivierten Vermischung des ange­machten Materiales mit Wasser und Luft führt.It should also be mentioned that the mixing chamber 10 could possibly be shortened compared to the exemplary embodiment, so that the vertical mixing area can be accommodated even better within the silo outline, because the addition of the two mixing chambers 10 and 16 intensified into a shortened mixing chamber 10 Mixing the prepared material with water and air leads.

Die Vorrichtung 1 kann kontinuierlich oder aber auch char­genweise benutzt werden, wobei in ersterem Falle die Pumpe 20 ständig das angemachte Material weiterbefördert, welches zuvor gemischt wurde. Beim chargenweisen Betrieb wird die Förderpumpe 20 gelegentlich abgeschaltet, so daß zumindest nach einer gewissen Rückstauzeit vorzugsweise über die Sonde 24 dann auch die Mischvorrichtung 12 und damit die weitere Zufuhr von trockenem Material unter­brochen wird.The device 1 can be used continuously or in batches, in the former case the pump 20 continuously conveying the material which has been mixed and which was previously mixed. In batch operation, the feed pump 20 is occasionally switched off, so that at least after a certain backflow time, the mixing device 12 and thus the further supply of dry material is then preferably interrupted via the probe 24.

Anhand der Figuren 2 bis 4 erkennt man noch, daß am Ende der horizontalen Mischkammer 10 ein axialer Anschlag 26 für die Stirnseite der horizontalen Mischerwelle 13 vorgesehen ist, welcher Anschlag 26 bei von der Mündung 15 der horizontalen Mischkammer 10 wegbewegter vertikaler Mischkammer 16 seinerseits von der Mündung 15 wegbewegbar, vorzugsweise wegschwenkbar ist, so daß die Mischerwelle 13 mit den Mischwerkzeugen 12 von der Mündung 15 her zu­gänglich wird und beispielsweise zu Reinigungs- oder Reparaturzwecken herausgezogen werden kann. Dies hat den Vorteil, daß an ihrem der Mündung 15 abgewandten Ende eine einfache Steckkupplung für den Antrieb genügt.On the basis of FIGS. 2 to 4, it can also be seen that an axial stop 26 is provided for the end face of the horizontal mixer shaft 13 at the end of the horizontal mixing chamber 10, which stop 26 in turn moves from the vertical mixing chamber 16 when the vertical mixing chamber 16 is moved away from the mouth 15 of the horizontal mixing chamber 10 The mouth 15 can be moved away, preferably swung away, so that the mixer shaft 13 with the mixing tools 12 is accessible from the mouth 15 and can be pulled out for cleaning or repair purposes, for example. This has the advantage that a simple plug-in coupling for the drive is sufficient at its end facing away from the mouth 15.

Dabei ist dieser Anschlag 26 in zweckmäßiger und einfacher Weise als ebene Platte ausgebildet.This stop 26 is designed in a practical and simple manner as a flat plate.

Bei der Ausführungsform nach Fig. 3 ist dieser Anschlag 26 an dem Gehäuse der vertikalen Mischkammer 16 befestigt und also zusammen mit dieser von der Mündung 15 der ho­rizontalen Mischkammer 10 um die Scharniere 25 weg­schwenkbar.In the embodiment according to FIG. 3, this stop is 26 attached to the housing of the vertical mixing chamber 16 and thus together with this pivotable away from the mouth 15 of the horizontal mixing chamber 10 about the hinges 25.

Fig. 4 zeigt eine Lösung, bei welcher der Anschlag 26 unabhängig von der vertikalen Mischkammer 16 an Schwenk­scharnieren 27 angelenkt ist, die an der Mündung 15 der horizontalen Mischkammer 10 den Schwenkscharnieren 25 für die vertikale Mischkammer 16 gegenüberliegen, wobei diese Schwenkscharniere 25 in Fig. 4 der besseren Deutlichkeit wegen nicht dargestellt sind. Ferner er­kennt man in Fig. 4 schematisiert noch eine Halterung 28, womit der Anschlag 26 in seiner Gebrauchsstellung festgelegt werden kann, so daß er beim Wegschwenken der vertikalen Mischkammer 16 nicht versehentlich ebenfalls aufgeschwenkt wird. Die erwähnte Steck­kupplung 29 für die Mischerwelle 13 ist in Fig. 2 sche­matisiert am Ende des Dosierbereiches 9 angedeutet.Fig. 4 shows a solution in which the stop 26 is articulated independently of the vertical mixing chamber 16 on pivot hinges 27, which are opposite the pivot hinges 25 for the vertical mixing chamber 16 at the mouth 15 of the horizontal mixing chamber 10, these pivot hinges 25 in Fig. 4 are not shown for better clarity. Furthermore, a holder 28 can be seen schematically in FIG. 4, by means of which the stop 26 can be fixed in its position of use, so that it is not inadvertently also pivoted open when the vertical mixing chamber 16 is pivoted away. The plug-in coupling 29 mentioned for the mixer shaft 13 is indicated schematically in FIG. 2 at the end of the metering area 9.

Gemäß Fig. 2 ist der untere Rand 30 der seitlichen Öffnung 22 auf der Höhe der unteren Begrenzung des Do­sierkanales 9 oder etwas tiefer angeordnet, so daß im Falle eines Rückstaues von angemachtem Material in der vertikalen Mischkammer 16 dieses angemachte Ma­terial nicht bis in den Dosierbereich 9 gelangen und das dort noch trockene Material anfeuchten kann, son­dern schon vorher aus der Öffnung 22 austreten kann. Dies stellt also eine zusätzliche Sicherheitsmaßnahme zu der Sonde 24 dar und könnte bei einfacheren Aus­führungsformen sogar eine Sonde 24 entbehrlich machen.2, the lower edge 30 of the lateral opening 22 is arranged at the level of the lower limit of the metering channel 9 or somewhat lower, so that in the event of a backlog of material in the vertical mixing chamber 16, this material does not reach the metering area 9 can reach and moisten the material that is still dry there, but can emerge from the opening 22 beforehand. This therefore represents an additional safety measure for the probe 24 and could even make a probe 24 unnecessary in simpler embodiments.

Fig. 5 zeigt eine Ausführungsform, bei welcher an der vertikalen Mischkammer 16 zwei einander etwa gegenüber­liegende horizontale Mischkammern 10 münden, deren Mischprodukte in der vertikalen Mischkammer 16 in vor­teilhafter Weise miteinander vermischt werden können. Der Aufbau der horizontalen Mischkammer 10 und der vertikalen Mischkammer 16 entspricht dabei den vorbe­schriebenen Ausführungsformen.FIG. 5 shows an embodiment in which two horizontal mixing chambers 10, approximately opposite one another, open at the vertical mixing chamber 16 Mixing products in the vertical mixing chamber 16 can advantageously be mixed with one another. The structure of the horizontal mixing chamber 10 and the vertical mixing chamber 16 corresponds to the previously described embodiments.

Claims (18)

1. A method for tempering mortar, plaster, concrete or like building material or setting material or for blending slurries or like moist mixtures, e.g. milk of lime, the pourable material being supplied to a batcher and after­wards mixed with liquid, simultaneously blended and con­veyed further, the essentially dry material or mix being supplied to the batcher preferably from a charging vessel and after having been tempered with liquid the mixture being guided, conveyed and blended in a direction running downwards and in an approximately horizontal direction, characterised in that mixed with liquid is first conyeved and blended in an approximately horizontal direction and then in a direction running downwards.
2. A method as claimed in claim 1, characterized in that the mixture is deflected from the approximately horizontal con­veying direction to a vertical or almost vertical direction.
3. A method as claimed in claim 1 or claim 2, characterized in that in the vertical zone the tempered mixture is set into rotation in such a way as to form a whirl sucking in air.
4. A device for tempering mortar, plaster, concrete or like building material or setting material or for blending slurries or the like, e.g. milk of lime, the material being supplied to a batcher (7) and afterwards mixed with liquid and blended and conveyed further, the initially dry material or mix being supplied to the batcher (7) prefer­ably from a charging vessel (4) and the device having a horizontal mixing chamber and a mixing chamber directed downwards (10 and 16), for performing the method as claimed in any one of claims 1 to 3, characterized in that connected to the opening (15) of a mixing chamber (10) which is arranged essentially horizontally and includes a horizontal mixer shaft (13) there is a mixing chamber (16) directed downwards in which a further mixing element (17) rotates, and that the connection (11) for the supply of liquid to the initially dry material or mix is provided at the horizontal mixing chamber (10) in spaced relationship to the opening (15) thereof.
5. A device as claimed in claim 4, characterized in that the deflection from the horizontal mixing chamber to the mixing chamber (16) directed downards amounts to approximately 90°.
6. A device as claimed in claim 4 or claim 5, characterized in that the mixing chamber (16) directed downwards is arranged approximately vertically and has at the lower opening (18) thereof an inlet to a feed pump (20).
7. A device as claimed in any one of claims 4 to 6, character­ized in that a driving motor (21) is arranged above the vertical mixing chamber (16), while a driving motor (14) for the horizontal mixing device with the mixing elements (12) is preferably mounted before the charging zone (4) of the mixing device (1).
8. A device as claimed in any one of claims 4 to 7, character­ized in that above the vertical mixing chamber (16) at least one intake port (22) is provided for air and for observing the mixing process.
9. A device as claimed in any one of claims 4 to 8, character­ized in that a probe (24), sensor or like detecting element is arranged in the mixing zone directed downwards, prefer­ably in the area (23) between opening (15) and mixing chamber (16), and controls at least the driving motor (14) of the horizontal mixing device and/or the supply of water.
10. A device as claimed in any one of claims 4 to 9, character­ized in that the vertical mixing chamber (16) and housing thereof is arranged in a condition adapted to be swung away from the opening (15) of the horizontal mixing chamber (10) by way of a joint, hinge (25) or the like which is arranged at the side of the opening (15) of the horizontal mixing chamber (10) and has a preferably vertical swivel axis.
11. A device as claimed in any one of claims 4 to 10, character­ized in that the vertical mixing chamber (16) together with the housing thereof is affixed to the horizontal mixing chamber (1O) or the like so as to be detachable and/or subse­quently attachable.
12. A device as claimed in any one of the preceding claims, characterized in that the motor (21) for the vertical mixing elements (17) simultaneously drives the feed pump (20) arranged preferably coaxially thereto.
13. A device as claimed in any one of claims 4 to 12, character­ized in that at the end of the horizontal mixing chamber (10) an axial stop (26) is provided for the face of the horizontal mixer shaft (13), which stop (26) is adapted to be moved away, preferably swung away, from the opening (15) of the horizontal mixing chamber (10), particularly when the vertical mixing chamber (16) is removed.
14. A device as claimed in any one of claims 4 to 14, character­ized in that the stop (26) for the face of the horizontal mixer shaft (13) takes the form of a flat plate, at least on the side facing said mixer shaft.
15. A device as claimed in any one of claims 4 to 14, character­ized in that the stop (26) is attached to the housing of the vertical mixing chamber (16) and is adapted to be swung to­gether with the latter away from the opening (15) of the horizontal mixing chamber (10).
16. A device as claimed in any one of claims 4 to 14, character­ized in that the stop (26) is linked - independently of the vertical mixing chamber (16) - to hinges (27) which at the opening (15) of the horizontal mixing chamber (10) lie oppos­ite the hinges (25) for the vertical mixing chamber (16), and that a holder (28) is provided for the stop (26) in the position of use of said stop.
17. A device as claimed in any one of claims 4 to 16, character­ized in that the lower edge (30) of the lateral port (22) lies level with or somewhat below the lower limit of the batching channel (9).
18. A device as claimed in any one of claims 4 to 17, character­ized in that more than one horizontal mixing chamber (1O) with a water supply, preferably two horizontal mixing chambers (10), particularly ones lying opposite each other, end at the vertical mixing chamber (16).
EP87110345A 1986-08-02 1987-07-17 Method and device for making binding material or for mixing sludge Expired - Lifetime EP0255633B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87110345T ATE59595T1 (en) 1986-08-02 1987-07-17 METHOD AND DEVICE FOR MATCHING SETTING MATERIAL OR MIXING SLUDGE OR THE LIKE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863626313 DE3626313A1 (en) 1986-08-02 1986-08-02 METHOD AND DEVICE FOR MAKING SETTING MATERIAL
DE3626313 1986-08-02

Publications (3)

Publication Number Publication Date
EP0255633A2 EP0255633A2 (en) 1988-02-10
EP0255633A3 EP0255633A3 (en) 1989-01-11
EP0255633B1 true EP0255633B1 (en) 1991-01-02

Family

ID=6306630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87110345A Expired - Lifetime EP0255633B1 (en) 1986-08-02 1987-07-17 Method and device for making binding material or for mixing sludge

Country Status (7)

Country Link
EP (1) EP0255633B1 (en)
AT (1) ATE59595T1 (en)
DE (2) DE3626313A1 (en)
ES (1) ES2019342B3 (en)
FI (1) FI873335A (en)
GR (1) GR3001273T3 (en)
NO (1) NO873218L (en)

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DE19930554C1 (en) * 1999-07-02 2001-06-07 Mathis Technik Method and device for preparing binding material, in particular a dry or free-flowing building material mixture

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DE3914471C1 (en) * 1989-05-02 1990-07-26 Michael Glatt Maschinenbau Gmbh, 8423 Abensberg, De Line dosing device - includes advancing member, quenching vessel, line inlet and water supply point
DE4335331A1 (en) * 1993-10-18 1995-04-20 Putzmeister Maschf Device for mixing and conveying building materials
DE9319066U1 (en) * 1993-12-14 1994-02-24 Müller, Anton, 79774 Albbruck Mortar mixer
DE29514183U1 (en) * 1995-09-05 1995-11-02 INOTEC GmbH Transport- und Fördersysteme, 79761 Waldshut-Tiengen Mortar mixer
DE19710067C1 (en) * 1997-03-12 1998-12-03 Maxit Holding Gmbh Device for the continuous preparation of bulk or building material mixtures
DE19911060C2 (en) * 1999-03-12 2001-04-26 Mathis Technik Process for the continuous preparation of a building material mixture
AT502109B1 (en) * 2004-03-03 2007-03-15 Ernstbrunner Kalktechnik Gmbh Producing activated building material comprises mixing base composition in at least two mixers whose rotational axes are at right angles to one another
US7524386B2 (en) * 2006-11-01 2009-04-28 United States Gypsum Company Method for wet mixing cementitious slurry for fiber-reinforced structural cement panels
ITUD20110170A1 (en) * 2011-10-24 2013-04-25 Zia EQUIPMENT FOR THE PRODUCTION OF A CEMENTITIOUS AGGLOMERATE, AND ITS PROCEDURE

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Publication number Priority date Publication date Assignee Title
DE19930554C1 (en) * 1999-07-02 2001-06-07 Mathis Technik Method and device for preparing binding material, in particular a dry or free-flowing building material mixture

Also Published As

Publication number Publication date
NO873218D0 (en) 1987-07-31
FI873335A0 (en) 1987-07-31
EP0255633A2 (en) 1988-02-10
ES2019342B3 (en) 1991-06-16
DE3626313C2 (en) 1989-12-28
NO873218L (en) 1988-02-03
GR3001273T3 (en) 1992-08-25
EP0255633A3 (en) 1989-01-11
ATE59595T1 (en) 1991-01-15
DE3626313A1 (en) 1988-02-11
FI873335A (en) 1988-02-03
DE3766909D1 (en) 1991-02-07

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