EP1721717B1 - Device and method for making a flowable mass - Google Patents

Device and method for making a flowable mass Download PDF

Info

Publication number
EP1721717B1
EP1721717B1 EP05010454A EP05010454A EP1721717B1 EP 1721717 B1 EP1721717 B1 EP 1721717B1 EP 05010454 A EP05010454 A EP 05010454A EP 05010454 A EP05010454 A EP 05010454A EP 1721717 B1 EP1721717 B1 EP 1721717B1
Authority
EP
European Patent Office
Prior art keywords
rotor
mixing tube
mating surface
rubber
mass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP05010454A
Other languages
German (de)
French (fr)
Other versions
EP1721717A1 (en
Inventor
Hans-Peter Irsch
Michael Duelli
Stefan Beck
Desmond Miller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knauf PFT GmbH and Co KG
Original Assignee
Knauf PFT GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Knauf PFT GmbH and Co KG filed Critical Knauf PFT GmbH and Co KG
Priority to DE502005005028T priority Critical patent/DE502005005028D1/en
Priority to AT05010454T priority patent/ATE404339T1/en
Priority to EP05010454A priority patent/EP1721717B1/en
Publication of EP1721717A1 publication Critical patent/EP1721717A1/en
Application granted granted Critical
Publication of EP1721717B1 publication Critical patent/EP1721717B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/1238—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices
    • B28C5/1292—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices with rotating stirring and feeding or discharging means fixed on the same axis, e.g. in an inclined container fed at its lower part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
    • B01F27/091—Stirrers characterised by the mounting of the stirrers with respect to the receptacle with elements co-operating with receptacle wall or bottom, e.g. for scraping the receptacle wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/2123—Shafts with both stirring means and feeding or discharging means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50—Mixing receptacles
    • B01F35/51—Mixing receptacles characterised by their material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50—Mixing receptacles
    • B01F35/511—Mixing receptacles provided with liners, e.g. wear resistant or flexible liners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth

Definitions

  • the invention relates to a device for producing a flowable mortar composition according to the preamble of claim 1. Furthermore, the invention relates to a method for producing a flowable composition, in particular a fine-grained mortar composition, such as a filler.
  • fine-grained mortar compounds such as fillers, which are used for filling of holes and cracks or for complete filling of plasterboard
  • the mortar composition is mixed by so-called Einsumpfen. Dry mortar is sprinkled on water, which absorbs the water, and the mortar mass is then mixed. Particularly in the case of fine-grained mortar masses, nodules and smaller lumps form, which make continuous mixing and conveying more difficult.
  • these fine-grained mortar mixtures are therefore first mixed in a separate mixer and fed after a longer mixing time of a pump for promotion. Thus, only a batchwise operation is possible in the prior art.
  • the apparatus comprises a main mixer for mixing dry mortar with water and an eccentric screw pump downstream of the main mixer for conveying the premixed mortar mass to a post-mixer.
  • the post-mixer is arranged at an outlet of the eccentric screw pump and has a vane rotor which is arranged centrally in a housing.
  • Water is supplied, which is mixed by the vane rotor with the mortar composition to obtain a low-viscosity mortar composition. Smaller nodules or lumps, however, are hardly detected by the vane rotor because they can dodge the vane rotor.
  • the AT 385 309 B discloses an apparatus and a method for producing a flowable mass, according to the preamble of claims 1 and 10.
  • US 4,515,483 A discloses a scraper for scraping off layers of the process material of knife-like plates forming on the inner wall of a drying vessel which continuously scrape residues on the inner wall by means of a rotary movement.
  • the invention relates to a device for producing a flowable composition according to claim 1.
  • a core idea of the invention is that the post-mixer has a rotor with an active surface and a mixing tube with a counter surface, wherein the rotor is arranged eccentrically in the mixing tube and a pump rotor, in particular an eccentric screw rotor of the eccentric screw pump, is driven such that it is rotatable with its active surface about a central axis of the mixing tube along the counter surface.
  • the nodules or lumps in the mortar mass are continuously comminuted and dissolved, so that a substantially smooth and homogeneous mortar mass is obtained.
  • the rotational or orbital motion of the rotor is tuned to the pumping or conveying movement of the screw rotor, so that reaches an approximately simultaneous, continuous promotion and smoothing or homogenization of the mortar mass becomes.
  • the rotor of the post-mixer is switched on and off via the worm rotor, whereby the operability is considerably simplified.
  • a central idea of the method according to the invention is that the mortar composition is guided in the aftermixer between an active surface and a mating surface by conveying the mortar mass in the conveying direction along the mating surface and the active surface approximately or at least approximately transversely to the conveying direction of the mortar mass on the mating surface is moved along, and in particular performs a rotational or rotational movement about a center axis of the post-mixer along the counter surface.
  • the mortar compound located between the surfaces Due to the movement of the active surface along the mating surface, the mortar compound located between the surfaces is exposed to comparatively high pressure, friction and shear forces. The still present in the mortar mass nodules or lumps are crushed and crushed between the active surface and the counter surface, so that the mortar composition is homogenized in an effective manner. As a result of the rotational or circulating movement of the active surface, the mortar composition is continuously pressed and rubbed, so that a continuous production and delivery of a substantially homogeneous mortar composition is ensured.
  • the effective area becomes substantially dense, i. essentially without a gap, moved along the opposite surface or at least slightly pressed against the mating surface, whereby the pressure acting on the mortar composition compressive, frictional and shear forces are further increased.
  • the active surface and / or the counter surface are elastic, so that they yield elastically during the passage and pressing of the mortar composition. Due to the elastic compliance of one or both surfaces, the mortar composition is carried out despite gapless contact or pressure contact of the surfaces in between.
  • the respective elastic surface is resiliently biased against the mortar composition, so that a crushing of the mortar composition is effected. By pinching the nodules or lumps are effectively crushed or at least significantly reduced.
  • the mating surface is elastic and the active surface is comparatively inelastic or rigid, so that only the mating surface yields elastically during the passage and pressing of the mortar composition. Due to the elastic counter surface and the inelastic or rigid active surface of the pressure on the mortar mass is increased at the same time squeezing the mortar mass between the surfaces significantly, so that even smaller clumps or nodules are crushed.
  • the elastic and inelastic behavior of the surfaces is reversed, wherein the effective surface is elastic and the mating surface is comparatively inelastic or rigid, so that only the active surface yields elastically during the passage and pressing of the mortar mass.
  • the mortar composition is squeezed between the surfaces and at the same time exposed to increased pressure.
  • both the active surface and the mating surface can be elastic, wherein it is particularly advantageous if the active surface is additionally pressed against the mating surface to exert or maintain an increased pressure on the mortar mass.
  • the mating surface is a cylindrical inner surface of the mixing tube and the active surface is a, in particular cylindrical, outer surface of the rotor.
  • the rotor is in particular elongated, preferably rod-shaped or cone-shaped, designed and / or rotor may be sized in terms of its length so that it is slightly shorter, equal to or longer than the length of the mixing tube.
  • the rotor extends substantially through the entire mixing tube.
  • the rotor can also have an oval or elliptical cross section instead of a circular cross section and / or be variable in its cross section axially over its length, for example becomes thicker in the direction of flow.
  • the rotor may bear against a support surface to absorb the reaction forces or counterforces at a return of the pump, i. when the pump moves opposite to the direction of conveyance.
  • the support surface is within the mixing tube when the rotor is the same length as the mixing tube, flush with the end thereof, or if the rotor protrudes slightly from the mixing tube. arranged outside of the mixing tube.
  • the post-mixer is disposed at an outlet of the eccentric screw pump, and the rotor of the post-mixer is disposed at an eccentric end portion of the screw rotor associated with the post-mixer.
  • the rotor of the post-mixer thus forms an extension of the screw rotor, wherein the eccentric arrangement or design of the screw rotor determines the eccentric arrangement of the rotor in the mixing tube.
  • the rotational movement of the eccentric screw rotor is transferred directly to the rotor of the post-mixer, so that no additional coupling or transmission means are needed.
  • the rotor of the post-mixer is formed integrally with the screw rotor of the eccentric screw pump, whereby a high stability is ensured.
  • the rotor of the post-mixer is connected by welding and / or fastening means with the worm rotor of the eccentric screw pump, wherein the worm rotor has an extension at its the end mixer associated end region.
  • the extension serves for attachment or connection of the rotor to or with the worm rotor.
  • the active surface of the rotor is substantially close to the mating surface of the mixing tube or at least slightly pressed against the mating surface, wherein the active surface and / or the mating surface of an elastic material, such as a made of synthetic or natural rubber, wear-resistant rubber are made.
  • an elastic material such as a made of synthetic or natural rubber, wear-resistant rubber.
  • the effective surface of the rotor and the mating surface of the mixing tube are formed substantially flat or smooth, whereby a uniform crushing of the mortar mass is achieved over the surfaces.
  • the active surface of the rotor and the counter surface of the mixing tube are each formed of materials having different elastic properties, wherein as material pair an elastic material, such as rubber, and a comparatively inelastic material, such as metal, preferably steel.
  • material pair an elastic material, such as rubber, and a comparatively inelastic material, such as metal, preferably steel.
  • the mating surface of the mixing tube is formed of rubber, wherein the mixing tube has an outer tube and a rubber insert which is attached to the inside of the outer tube and whose inner surface forms the counter surface, and the active surface of the rotor is in particular made of metal, preferably from Steel formed.
  • the mixing tube of the post-mixer is formed integrally with a delivery tube of the eccentric screw pump, wherein the outer tube and the rubber insert of the mixing tube are each formed integrally with an outer tube and a rubber insert of the delivery tube.
  • the remixer and the eccentric screw pump are combined by this structural measure to a compact and inexpensive to produce unit.
  • the mixing tube of the post-mixer and a delivery tube of the eccentric screw pump are formed as separate parts and fasteners, such as a flange, connected to each other, wherein the flange has a radially inwardly projecting, annular projection, which between the rubber insert of the mixing tube and a rubber insert of the conveyor tube is arranged and sealingly applied thereto.
  • fasteners such as a flange
  • the mixing tube and the delivery tube as separate parts, the mixing tube can be used as needed and removed, for example, for cleaning again.
  • the sealing projection of the flange prevents penetration of mortar mass between the two rubber parts.
  • the rubber insert of the mixing tube is materially connected to the outer tube of the mixing tube by vulcanization, whereby a tight fit of the rubber insert is achieved on the outer tube.
  • the counter surface of the mixing tube is made of metal, preferably steel, wherein the mixing tube comprises a steel tube whose inner surface forms the counter surface, and the effective surface of the rotor is formed of rubber, wherein the rotor comprises a rotor core, which with a rubber coating, for example in the form of a rubber tube is provided, whose outer surface forms the effective surface of the rotor.
  • the rotor core is suitably made of metal or steel and forms a stable base for the rubber coating. By the rubber coating an elastically yielding effective surface is created, which can exert on the basis of the rigid rotor core at the same time an increased pressure on the mortar mass.
  • the rotor core and the rubber coating is attached to the extension of the screw rotor, wherein the rotor core are preferably fixed by welding and the rubber coating on one or more fasteners on the extension.
  • This constructive measure of the rubber coating is securely attached to the rotor core and also withstands high stress.
  • the rubber coating may be glued to the rotor core.
  • FIG. 1 is a schematic representation of a device according to a first embodiment shown in sectional view.
  • the apparatus comprises a main mixer for mixing dry mortar and water (not shown).
  • the main mixer is followed by an eccentric screw pump 8 in order to convey the premixed mortar composition, in particular a fine-grained mortar composition, such as a filler, in the conveying direction F to a post-mixer 1.
  • the eccentric screw pump 8 has a delivery tube 10, which comprises an outer tube 11 and a rubber insert 12, which is arranged on the inside of the outer tube 11.
  • the rubber insert 12 forms a screw-shaped conveying channel 13, through which the mortar composition is pumped by means of a rotating in the conveying channel 13, eccentric screw rotor 9 to the after-mixer 1.
  • the secondary mixer 1 is arranged at an outlet 14 of the eccentric screw pump 8 and comprises a mixing tube 4 and an elongated, in particular rod-shaped or pin-shaped rotor 2, which is arranged eccentrically in the mixing tube 4.
  • the rotor 2 is arranged on an end region 25 of the screw rotor 9 assigned to the post-mixer 1 and formed integrally therewith.
  • the rotor 2 of the post-mixer 1 extends from the screw rotor 9 in the conveying direction F or parallel to a central axis A of the mixing tube 4 over the length L of the mixing tube 4 and protrudes a little way out of the mixing tube 4, against a support plate or a support other support element (eg pin) (not shown) support.
  • the support can be made flush at the end of the mixing tube or even in the mixing tube when the support member projects into the mixing tube.
  • the mixing tube 4 comprises an outer tube 6 and a rubber insert 7, which is attached to the inside of the outer tube 6 and is materially connected to the outer tube 6 by vulcanization.
  • the rotor 2 of the post-mixer 1 and the worm rotor 9 are made of metal, suitably of steel.
  • the rubber insert 7 and the outer tube 6 of the mixing tube 4 are each formed integrally with the rubber insert 12 and the outer tube 11 of the conveyor tube 10, so that the after-mixer 1 forms an integral part of the eccentric screw pump 8.
  • the cylindrical outer surface of the rotor 2 forms an active surface 3 which is substantially dense, i. essentially without gaps, abuts the cylindrical inner surface of the rubber insert 7.
  • the inner surface of the rubber insert 7 forms a cooperating with the inelastic or rigid active surface 3 of the rotor 2 elastic mating surface 5.
  • the rotor 2 may be pressed with its active surface 3 against the mating surface 5 of the mixing tube 4.
  • the rotor 2 is driven by the worm rotor 9, so that it rotates with its active surface 3 in accordance with the rotational movement of the worm rotor 9 about the central axis A along the mating surface 5.
  • the mortar mass which is conveyed along the opposite surface 5 of the mixing tube 4 in the conveying direction F, is passed through the rotational or rotational movement of the rotor 2 between the inelastic or rigid active surface 3 of the rotor 2 and the elastic counter surface 5, pressed and rubbed, wherein the elastic counter surface 5 yields elastically during the passage and pressing of the mortar composition.
  • the active surface 3 of the rotor 2 and the mating surface 5 of the mixing tube 4 are formed substantially flat or smooth.
  • the active surface or the mating surface may be structured and provided, for example, with grooves or beads running transversely to the conveying direction F (not shown).
  • the rubber insert 7 and the rubber insert 12 are formed from a wear-resistant elastomer made of synthetic or natural rubber, for example NR and / or SBR.
  • FIG. 2 is an alternative embodiment of the device of FIG. 1 shown in sectional view.
  • the mixing tube 4 of the post-mixer 1 and the delivery tube 10 of the eccentric screw pump 9 are formed as separate parts and connected to each other via a flange 15.
  • the flange 15 has a radially inwardly projecting, annular projection 16 which is disposed between the rubber insert 7 of the mixing tube 4 and the rubber insert 12 of the conveyor tube 10 and sealingly abuts thereon.
  • the projection 16 terminates approximately flush with the rubber insert 7 and the rubber insert 12 and thus forms a continuous transition from the rubber insert 12 to the rubber insert 7.
  • FIG. 3 is a schematic representation of a second embodiment of the device shown in sectional view.
  • the mixing tube 4 of the post-mixer 1 comprises a steel tube 18, the inner surface of which forms the mating surface 5.
  • the rotor 2 of the post-mixer 1 has a rotor core 26, which is made of metal, in particular made of steel and with one end to the end portion 25 of the screw rotor 9 located extension 19 loosely applied and is supported at the other end again on the support member, not shown.
  • the rotor core 26 is provided with a rubber coating 17 in the form of a rubber hose whose outer surface forms the active surface 3.
  • the rubber cover 17 is attached to the extension 19 of the worm rotor 9 via fastening elements 20, for example via screw or clamping means.
  • the active surface 3 of the rotor 2 is elastic and the mating surface 5 of the mixing tube 4 is comparatively inelastic or rigid.
  • the rotor 2 rests with its elastic active surface 3 substantially close to the inelastic or rigid mating surface 5.
  • the rotor 2 with its active surface 3 against the counter surface 5 to be pressed.
  • the mortar composition is passed through the rotational or rotational movement of the rotor 2 between the elastic active surface 3 of the rotor 2 and the inelastic mating surface 5, pressed and rubbed, wherein the elastic active surface 3 yields elastically during the execution and pressing of the mortar composition.
  • the steel pipe 18 is connected via a flange 21 to the delivery pipe 10 of the eccentric screw pump 8.
  • the flange 21 has a first, radially inwardly projecting, annular projection 22 which is associated with the conveying tube 10 and sealingly abuts the rubber insert 12 of the Föxderrohrs 10.
  • a second, radially inwardly projecting, annular projection 24 of the flange 21 is associated with the steel tube 18 and sealingly abuts against it. Between the first projection 22 and the second projection 24, a gap 23 for carrying out the laterally or radially outwardly projecting fastening elements 20 is formed.
  • both the active surface 3 of the rotor 2 and the counter surface 5 of the mixing tube 4 may be elastic, wherein the mixing tube 4 has the rubber insert 7 and the rotor 2 and the rotor core 26 is additionally provided with the rubber coating 17.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Rotary Pumps (AREA)

Abstract

Producing a flowable material comprises mixing dry mortar and water in a primary mixer and pumping the mixture to a secondary mixer in which the mixture is conveyed between a working surface and a counter surface while the working surface is moved transversely or rotated about the central axis of the mixer. An independent claim is also included for apparatus for producing a flowable material, comprising a primary mixer for mixing dry mortar and water and a pump (8) for transferring the mixture to a secondary mixer, where the secondary mixer comprises a rotor (2) with a working surface (3) and a mixing tube (4) with a counter surface (5) and the rotor is mounted eccentrically in the mixing tube and is rotated about the central axis of the mixer by a pump rotor (9).

Description

Beschreibungdescription

Die Erfindung betrifft eine Vorrichtung zur Herstellung einer fließfähigen Mörtelmasse gemäß dem Oberbegriff des Patentanspruchs 1. Des Weiteren betrifft die Erfindung ein Verfahren zur Herstellung einer fließfähigen Masse, insbesondere einer feinkörnigen Mörtelmasse, wie eine Spachtelmasse.The invention relates to a device for producing a flowable mortar composition according to the preamble of claim 1. Furthermore, the invention relates to a method for producing a flowable composition, in particular a fine-grained mortar composition, such as a filler.

Bei feinkörnigen Mörtelmassen, wie Spachtelmassen, die zum Verspachteln von Löchern und Rissen oder zum vollständigen Verspachteln von Gipsplatten verwendet werden, wird die Mörtelmasse durch sogenanntes Einsumpfen angemischt. Dabei wird Trockenmörtel auf Wasser aufgestreut, der das Wasser aufsaugt, und die Mörtelmasse wird anschließend vermischt. Insbesondere bei feinkörnigen Mörtelmassen bilden sich Knötchen und kleinere Klumpen, die eine kontinuierliche Mischung und Förderung erschweren. In der Praxis werden diese feinkörnigen Mörtelmischungen daher zunächst in einem gesonderten Mischer angemischt und nach einer längeren Mischdauer einer Pumpe zur Förderung zugeführt. Somit ist beim Stand der Technik nur ein chargenweiser Betrieb möglich.For fine-grained mortar compounds, such as fillers, which are used for filling of holes and cracks or for complete filling of plasterboard, the mortar composition is mixed by so-called Einsumpfen. Dry mortar is sprinkled on water, which absorbs the water, and the mortar mass is then mixed. Particularly in the case of fine-grained mortar masses, nodules and smaller lumps form, which make continuous mixing and conveying more difficult. In practice, these fine-grained mortar mixtures are therefore first mixed in a separate mixer and fed after a longer mixing time of a pump for promotion. Thus, only a batchwise operation is possible in the prior art.

Aus der DE 197 54 969 A1 ist eine Vorrichtung bekannt, mit der sich dünnflüssiger Schaumbrei bzw. eine dünnflüssige, schaumige Mörtelmasse in knötchenfreier homogener Konsistenz kontinuierlich herstellen lässt und mit der eine hohe Förderleistung erreicht wird. Die Vorrichtung umfasst einen Hauptmischer zum Mischen von Trockenmörtel mit Wasser und eine dem Hauptmischer nachgeordnete Exzenter-Schneckenpumpe, zum Befördern der vorgemischten Mörtelmasse zu einem Nachmischer. Der Nachmischer ist an einem Auslass der Exzenter-Schneckenpumpe angeordnet und weist einen Flügelrotor auf, der mittig in einem Gehäuse angeordnet ist. In das Gehäuse wird Wasser zugeführt, das durch den Flügelrotor mit der Mörtelmasse vermischt wird, um eine dünnflüssige Mörtelmasse zu erhalten. Kleinere Knötchen oder Klumpen werden jedoch von dem Flügelrotor kaum erfasst, da diese dem Flügelrotor ausweichen können.From the DE 197 54 969 A1 is a device is known with which low-viscosity foam slurry or a thin liquid, foamy mortar mass in nodule-free homogeneous consistency can be produced continuously and with a high flow rate is achieved. The apparatus comprises a main mixer for mixing dry mortar with water and an eccentric screw pump downstream of the main mixer for conveying the premixed mortar mass to a post-mixer. The post-mixer is arranged at an outlet of the eccentric screw pump and has a vane rotor which is arranged centrally in a housing. In the case Water is supplied, which is mixed by the vane rotor with the mortar composition to obtain a low-viscosity mortar composition. Smaller nodules or lumps, however, are hardly detected by the vane rotor because they can dodge the vane rotor.

Die AT 385 309 B offenbart eine Vorrichtung und ein Verfahren zur Herstellung einer fließfähigen Masse, gemäß dem Oberbegriff der Patentansprüche 1 und 10.The AT 385 309 B discloses an apparatus and a method for producing a flowable mass, according to the preamble of claims 1 and 10.

US 4,515,483 A offenbart eine Abschabvorrichtung zum Abschaben von sich an der Innenwandung eines Trocknungsgefäßes bildenden Schichten des Prozessmaterials mit-messerartigen Platten, die an der Innenwand befindliche Rückstände durch eine Drehbewegung kontinuierlich abschaben. US 4,515,483 A discloses a scraper for scraping off layers of the process material of knife-like plates forming on the inner wall of a drying vessel which continuously scrape residues on the inner wall by means of a rotary movement.

Es ist nun Aufgabe der Erfindung, eine Vorrichtung und ein Verfahren der eingangs genannten Art zu schaffen, bei denen die vorgenannten Nachteile beim Stand der Technik wenigstens teilweise überwunden oder zumindest vermindert werden.It is an object of the invention to provide a device and a method of the type mentioned, in which the aforementioned disadvantages in the prior art at least partially overcome or at least reduced.

Diese Aufgabe wird vorrichtungstechnisch mit den Merkmalen des Patentanspruchs 1 und verfahrenstechnisch mit den Merkmalen des Patentanspruchs 10 gelöst. Vorteilhafte Ausführungen und Weiterbildungen ergeben sich aus den von Anspruch 1 und Anspruch 10 jeweils abhängigen Ansprüchen.This object is device technology with the features of claim 1 and procedurally with the features of the claim 10 solved. Advantageous embodiments and developments emerge from the dependent claims of claim 1 and claim 10.

Die Erfindung betrifft eine Vorrichtung zur Herstellung einer fließfähigen Masse gemäß Anspruch 1. Ein Kerngedanke der erfindungsgemäßen besteht darin, dass der Nachmischer einen Rotor mit einer Wirkfläche und ein Mischrohr mit einer Gegenfläche aufweist, wobei der Rotor exzentrisch im Mischrohr angeordnet ist und über einen Pumpenrotor, insbesondere einen exzentrischen Schneckenrotor der Exzenter-Schneckenpumpe, derart antreibbar ist, dass er mit seiner Wirkfläche um eine Mittelachse des Mischrohrs entlang der Gegenfläche rotierbar ist.The invention relates to a device for producing a flowable composition according to claim 1. A core idea of the invention is that the post-mixer has a rotor with an active surface and a mixing tube with a counter surface, wherein the rotor is arranged eccentrically in the mixing tube and a pump rotor, in particular an eccentric screw rotor of the eccentric screw pump, is driven such that it is rotatable with its active surface about a central axis of the mixing tube along the counter surface.

Durch die exzentrische Anordnung des Rotors und durch seine Rotations-oder Umlaufbewegung entlang der Gegenfläche des Mischrohrs werden die in der Mörtelmasse befindlichen Knötchen oder Klumpen kontinuierlich zerkleinert und aufgelöst, so dass eine im Wesentlichen glatte und homogene Mörtelmasse erhalten wird. Dadurch, dass der Rotor des Nachmischers über den Pumpenrotor bzw. Schneckenrotor anttreibbar ist, ist die Rotations-oder Umlaufbewegung des Rotors auf die Pump- oder Förderbewegung des Schneckenrotors abgestimmt, so dass eine etwa gleichzeitige, kontinuierliche Förderung und Glättung bzw. Homogenisierung der Mörtelmasse erreicht wird. Darüber hinaus wird der Rotor des Nachmischers über den Schneckenrotor ein- und abgeschaltet, wodurch die Bedienbarkeit erheblich vereinfacht wird.Due to the eccentric arrangement of the rotor and by its rotational or circulating movement along the mating surface of the mixing tube, the nodules or lumps in the mortar mass are continuously comminuted and dissolved, so that a substantially smooth and homogeneous mortar mass is obtained. Characterized in that the rotor of the post-mixer is driven by the pump rotor or screw rotor, the rotational or orbital motion of the rotor is tuned to the pumping or conveying movement of the screw rotor, so that reaches an approximately simultaneous, continuous promotion and smoothing or homogenization of the mortar mass becomes. In addition, the rotor of the post-mixer is switched on and off via the worm rotor, whereby the operability is considerably simplified.

Ein Kerngedanke des erfindungsgemäßen Verfahrens gemäß Anspruch 10 besteht darin, dass die Mörtelmasse im Nachmischer zwischen einer Wirkfläche und einer Gegenfläche geführt wird, indem die Mörtelmasse in Förderrichtung entlang der Gegenfläche befördert wird und die Wirkfläche etwa oder wenigstens annähernd quer zur Förderrichtung der Mörtelmasse an der Gegenfläche entlang bewegt wird, und insbesondere eine Rotations- oder Umlaufbewegung um eine Mittelachse des Nachmischers entlang der Gegenfläche ausführt.A central idea of the method according to the invention is that the mortar composition is guided in the aftermixer between an active surface and a mating surface by conveying the mortar mass in the conveying direction along the mating surface and the active surface approximately or at least approximately transversely to the conveying direction of the mortar mass on the mating surface is moved along, and in particular performs a rotational or rotational movement about a center axis of the post-mixer along the counter surface.

Durch die Bewegung der Wirkfläche entlang der Gegenfläche wird die zwischen den Flächen befindliche Mörtelmasse vergleichsweise hohen Druck-, Reib- und Scherkräften ausgesetzt. Die noch in der Mörtelmasse vorhandenen Knötchen oder Klumpen werden dabei zwischen der Wirkfläche und der Gegenfläche zerdrückt und zerrieben, so dass die Mörtelmasse auf effektive Weise homogenisiert wird. Durch die Rotations- oder Umlaufbewegung der Wirkfläche wird die Mörtelmasse kontinuierlich gedrückt und gerieben, so dass eine kontinuierliche Herstellung und Förderung einer im Wesentlichen homogenen Mörtelmasse gewährleistet ist. Anhand des Verfahrens lassen sich sowohl dünnflüssige als auch dickflüssige Mörtelmassen wirksam homogenisieren, ohne dass zusätzliche konsistenzverändernde Maßnahmen, beispielsweise eine Zuführung von Wasser oder Druckluft, erforderlich sind.Due to the movement of the active surface along the mating surface, the mortar compound located between the surfaces is exposed to comparatively high pressure, friction and shear forces. The still present in the mortar mass nodules or lumps are crushed and crushed between the active surface and the counter surface, so that the mortar composition is homogenized in an effective manner. As a result of the rotational or circulating movement of the active surface, the mortar composition is continuously pressed and rubbed, so that a continuous production and delivery of a substantially homogeneous mortar composition is ensured. By means of the method, it is possible to efficiently homogenize both low-viscosity and thick-bodied mortar masses without requiring additional consistency-changing measures, for example a supply of water or compressed air.

Vorzugsweise wird die Wirkfläche im Wesentlichen dicht, d.h. im Wesentlichen spaltlos, an der Gegenfläche entlang bewegt oder zumindest geringfügig gegen die Gegenfläche gedrückt, wodurch die auf die Mörtelmasse einwirkenden Druck-, Reib- und Scherkräfte weiter erhöht werden. Die Wirkfläche und/oder die Gegenfläche sind dabei elastisch, so dass sie beim Durchführen und Drücken der Mörtelmasse elastisch nachgeben. Durch die elastische Nachgiebigkeit einer oder beider Flächen wird die Mörtelmasse trotz spaltlosen Kontakts oder Druckkontakts der Flächen dazwischen durchgeführt. Die jeweils elastische Fläche ist dabei elastisch gegen die Mörtelmasse vorgespannt, so dass eine Quetschung der Mörtelmasse bewirkt wird. Durch die Quetschung werden die Knötchen oder Klumpen auf effektive Weise zerrieben oder zumindest erheblich verkleinert.Preferably, the effective area becomes substantially dense, i. essentially without a gap, moved along the opposite surface or at least slightly pressed against the mating surface, whereby the pressure acting on the mortar composition compressive, frictional and shear forces are further increased. The active surface and / or the counter surface are elastic, so that they yield elastically during the passage and pressing of the mortar composition. Due to the elastic compliance of one or both surfaces, the mortar composition is carried out despite gapless contact or pressure contact of the surfaces in between. The respective elastic surface is resiliently biased against the mortar composition, so that a crushing of the mortar composition is effected. By pinching the nodules or lumps are effectively crushed or at least significantly reduced.

Nach einer vorteilhaften Ausführung des Verfahrens ist die Gegenfläche elastisch und die Wirkfläche vergleichsweise unelastisch oder starr, so dass lediglich die Gegenfläche beim Durchführen und Drücken der Mörtelmasse elastisch nachgibt. Durch die elastische Gegenfläche und die unelastische oder starre Wirkfläche wird der Druck auf die Mörtelmasse bei gleichzeitiger Quetschung der Mörtelmasse zwischen den Flächen merklich erhöht, so dass auch kleinere Klumpen oder Knötchen zerrieben werden.According to an advantageous embodiment of the method, the mating surface is elastic and the active surface is comparatively inelastic or rigid, so that only the mating surface yields elastically during the passage and pressing of the mortar composition. Due to the elastic counter surface and the inelastic or rigid active surface of the pressure on the mortar mass is increased at the same time squeezing the mortar mass between the surfaces significantly, so that even smaller clumps or nodules are crushed.

Gemäß einer zweiten Ausführung des Verfahrens ist das elastische und unelastische Verhalten der Flächen umgekehrt, wobei die Wirkfläche elastisch und die Gegenfläche vergleichsweise unelastisch oder starr ist, so dass lediglich die Wirkfläche beim Durchführen und Drücken der Mörtelmasse elastisch nachgibt. Auch bei dieser Ausführung wird die Mörtelmasse zwischen den Flächen gequetscht und zugleich einem erhöhten Druck ausgesetzt.
Bei den oben beschriebenen Ausführungen ist es hinsichtlich der auf die Mörtelmasse einwirkenden Druck-, Reib- und Scherkräfte ausreichend, wenn die Wirkfläche dicht bzw. im Wesentlichen spaltlos an der Gegenfläche entlang bewegt wird.According to a second embodiment of the method, the elastic and inelastic behavior of the surfaces is reversed, wherein the effective surface is elastic and the mating surface is comparatively inelastic or rigid, so that only the active surface yields elastically during the passage and pressing of the mortar mass. Also in this embodiment, the mortar composition is squeezed between the surfaces and at the same time exposed to increased pressure.
In the embodiments described above, with regard to the pressure, friction and shear forces acting on the mortar composition, it is sufficient if the effective surface is moved tightly or essentially without gaps along the counter surface.

Alternativ können sowohl die Wirkfläche als auch die Gegenfläche elastisch sein, wobei es dann besonders vorteilhaft ist, wenn die Wirkfläche zusätzlich gegen die Gegenfläche gedrückt wird, um einen erhöhten Druck auf die Mörtelmasse auszuüben bzw. aufrecht zu erhalten.Alternatively, both the active surface and the mating surface can be elastic, wherein it is particularly advantageous if the active surface is additionally pressed against the mating surface to exert or maintain an increased pressure on the mortar mass.

Vorteilhafterweise ist die Gegenfläche eine zylindrische Innenfläche des Mischrohrs und die Wirkfläche eine, insbesondere zylindrische, Außenfläche des Rotors. Der Rotor ist insbesondere länglich, vorzugsweise stangen- oder zapfenförmig, gestaltet und/oder Rotor kann hinsichtlich seiner Länge so bemessen sein, dass er etwas kürzer ist, gleich lang oder länger ist als die Länge des Mischrohrs. Vorzugsweise erstreckt sich der Rotor im Wesentlichen durch das gesamte Mischrohr hindurch. Durch diese konstruktiven Maßnahmen wird einerseits eine kompakte Bauweise des Nachmischers ermöglicht und andererseits gewährleistet, dass die Mörtelmasse über die gesamte Gegenfläche des Mischrohrs zerrieben wird.Advantageously, the mating surface is a cylindrical inner surface of the mixing tube and the active surface is a, in particular cylindrical, outer surface of the rotor. The rotor is in particular elongated, preferably rod-shaped or cone-shaped, designed and / or rotor may be sized in terms of its length so that it is slightly shorter, equal to or longer than the length of the mixing tube. Preferably, the rotor extends substantially through the entire mixing tube. These structural measures on the one hand allows a compact design of the post-mixer and on the other hand ensures that the mortar mass is crushed over the entire counter surface of the mixing tube.

Der Rotor kann anstelle eines kreisförmigen Querschnitts auch einen ovalen oder elliptischen Querschnitt aufweisen und/oder in seinem Querschnitt axial über seine Länge veränderlich sein, beispielsweise dicker wird in Fließrichtung.The rotor can also have an oval or elliptical cross section instead of a circular cross section and / or be variable in its cross section axially over its length, for example becomes thicker in the direction of flow.

An seinem Ende kann der Rotor in einer vorteilhaften Ausführungsform sich gegen eine Stützfläche abstützen, um die Reaktionskräfte oder Gegenkräfte bei einem Rücklauf der Pumpe, d.h. wenn sich die Pumpe entgegengesetzt zur Förderrichtung bewegt, aufzunehmen. Abhängig von der Länge des Rotors ist die Stützfläche, wenn der Rotor kürzer ist als das Mischrohr, innerhalb des Mischrohrs, wenn der Rotor genauso lang ist wie das Mischrohr, bündig an dessen Ende oder, wenn der Rotor ein Stück weit aus dem Mischrohr herausragt, außerhalb des Mischrohrs angeordnet.At its end, in an advantageous embodiment, the rotor may bear against a support surface to absorb the reaction forces or counterforces at a return of the pump, i. when the pump moves opposite to the direction of conveyance. Depending on the length of the rotor, if the rotor is shorter than the mixing tube, the support surface is within the mixing tube when the rotor is the same length as the mixing tube, flush with the end thereof, or if the rotor protrudes slightly from the mixing tube. arranged outside of the mixing tube.

Vorzugsweise ist der Nachmischer an einem Auslass der Exzenter-Schneckenpumpe angeordnet, und der Rotor des Nachmischers ist an einem exzentrischen und dem Nachmischer zugeordneten Endbereich des Schneckenrotors angeordnet. Der Rotor des Nachmischers bildet somit eine Verlängerung des Schneckenrotors, wobei die exzentrische Anordnung bzw. Ausbildung des Schneckenrotors die exzentrische Anordnung des Rotors im Mischrohr bestimmt. Die Rotationsbewegung des exzentrischen Schneckenrotors wird direkt auf den Rotor des Nachmischers übertragen, so dass keine zusätzlichen Kupplungs- oder Übertragungsmittel benötigt werden.Preferably, the post-mixer is disposed at an outlet of the eccentric screw pump, and the rotor of the post-mixer is disposed at an eccentric end portion of the screw rotor associated with the post-mixer. The rotor of the post-mixer thus forms an extension of the screw rotor, wherein the eccentric arrangement or design of the screw rotor determines the eccentric arrangement of the rotor in the mixing tube. The rotational movement of the eccentric screw rotor is transferred directly to the rotor of the post-mixer, so that no additional coupling or transmission means are needed.

Zweckmäßigerweise ist der Rotor des Nachmischers einstückig mit dem Schneckenrotor der Exzenter-Schneckenpumpe ausgebildet, wodurch eine hohe Stabilität gewährleistet ist.Conveniently, the rotor of the post-mixer is formed integrally with the screw rotor of the eccentric screw pump, whereby a high stability is ensured.

Gemäß einer alternativen Ausgestaltung ist der Rotor des Nachmischers durch Verschweißen und/oder über Befestigungsmittel mit dem Schneckenrotor der Exzenter-Schneckenpumpe verbunden, wobei der Schneckenrotor an seinem dem Nachmischer zugeordneten Endbereich einen Fortsatz aufweist. Der Fortsatz dient zur Befestigung oder zur Verbindung des Rotors an bzw. mit dem Schneckenrotor. Durch diese konstruktive Maßnahme können die Rotoren je nach Bedarf auf einfache Weise angebracht oder entfernt werden.According to an alternative embodiment, the rotor of the post-mixer is connected by welding and / or fastening means with the worm rotor of the eccentric screw pump, wherein the worm rotor has an extension at its the end mixer associated end region. The extension serves for attachment or connection of the rotor to or with the worm rotor. By this constructive measure, the rotors can be easily attached or removed as needed.

Besonders bevorzugt liegt die Wirkfläche des Rotors im Wesentlichen dicht an der Gegenfläche des Mischrohrs an oder sie ist zumindest geringfügig gegen die Gegenfläche gedrückt, wobei die Wirkfläche und/oder die Gegenfläche aus einem elastischen Material, wie ein aus Synthese- oder Naturkautschuk hergestellter, verschleißfester Gummi hergestellt sind. Durch die Verwendung von Gummi wird eine verbesserte Haftung und Reibung der Mörtelmasse an der jeweils aus Gummi gebildeten Fläche erzielt. Darüber hinaus ist Gummi ausreichend nachgiebig, so dass die Mörtelmasse zwischen den Flächen durchgeführt und in hohem Maße gequetscht werden kann.Particularly preferably, the active surface of the rotor is substantially close to the mating surface of the mixing tube or at least slightly pressed against the mating surface, wherein the active surface and / or the mating surface of an elastic material, such as a made of synthetic or natural rubber, wear-resistant rubber are made. By the use of rubber, improved adhesion and friction of the mortar composition is achieved on the rubber-formed surface. In addition, rubber is sufficiently compliant so that the mortar mass can be passed between the surfaces and squeezed to a high degree.

Zweckmäßigerweise sind die Wirkfläche des Rotors und die Gegenfläche des Mischrohrs im Wesentlichen eben oder glatt ausgebildet, wodurch eine gleichmäßige Quetschung der Mörtelmasse über die Flächen erreicht wird.Conveniently, the effective surface of the rotor and the mating surface of the mixing tube are formed substantially flat or smooth, whereby a uniform crushing of the mortar mass is achieved over the surfaces.

Bevorzugtermaßen sind die Wirkfläche des Rotors und die Gegenfläche des Mischrohrs jeweils aus Materialien mit unterschiedlichen elastischen Eigenschaften gebildet, wobei als Materialpaar ein elastisches Material, wie Gummi, und ein vergleichsweise unelastisches Material, wie Metall, vorzugsweise Stahl gewählt ist. Durch das Materialpaar "Gummi-Stahl" wird ein erhöhter Druck auf die Mörtelmasse ausgeübt und zugleich eine ausreichende elastische Nachgiebigkeit der aus Gummi gebildeten Fläche erreicht.Preferably, the active surface of the rotor and the counter surface of the mixing tube are each formed of materials having different elastic properties, wherein as material pair an elastic material, such as rubber, and a comparatively inelastic material, such as metal, preferably steel. By the pair of materials "rubber-steel" an increased pressure is exerted on the mortar composition and at the same time reaches a sufficient elastic compliance of the surface formed of rubber.

Gemäß einer ersten Ausführungsform ist die Gegenfläche des Mischrohrs aus Gummi gebildet, wobei das Mischrohr ein Außenrohr und einen Gummieinsatz aufweist, der an der Innenseite des Außenrohrs angebracht ist und dessen Innenfläche die Gegenfläche bildet, und die Wirkfläche des Rotors ist insbesondere aus Metall, vorzugsweise aus Stahl gebildet. Durch die Verwendung eines Gummieinsatzes und dessen Anordnung am Außenrohr wird eine elastisch nachgiebige und zugleich strapazierfähige Gegenfläche geschaffen.According to a first embodiment, the mating surface of the mixing tube is formed of rubber, wherein the mixing tube has an outer tube and a rubber insert which is attached to the inside of the outer tube and whose inner surface forms the counter surface, and the active surface of the rotor is in particular made of metal, preferably from Steel formed. By using a rubber insert and its arrangement on the outer tube, an elastically yielding and at the same time durable counter surface is created.

Zweckmäßigerweise ist das Mischrohr des Nachmischers einstückig mit einem Förderrohr der Exzenter-Schneckenpumpe ausgebildet, wobei das Außenrohr und der Gummieinsatz des Mischrohrs jeweils einstückig mit einem Außenrohr und einer Gummieinlage des Förderrohrs ausgebildet sind. Der Nachmischer und die Exzenter-Schneckenpumpe werden durch diese konstruktive Maßnahme zu einer kompakten und kostengünstig herstellbaren Baueinheit zusammengefasst.Conveniently, the mixing tube of the post-mixer is formed integrally with a delivery tube of the eccentric screw pump, wherein the outer tube and the rubber insert of the mixing tube are each formed integrally with an outer tube and a rubber insert of the delivery tube. The remixer and the eccentric screw pump are combined by this structural measure to a compact and inexpensive to produce unit.

Gemäß einer alternativen Ausgestaltung sind das Mischrohr des Nachmischers und ein Förderrohr der Exzenter-Schneckenpumpe als separate Teile ausgebildet und über Befestigungsmittel, wie einen Flansch, miteinander verbunden, wobei der Flansch einen radial nach innen ragenden, ringförmigen Vorsprung aufweist, der zwischen dem Gummieinsatz des Mischrohrs und einer Gummieinlage des Förderrohrs angeordnet ist und dichtend daran anliegt. Durch die Ausbildung des Mischrohrs und des Förderrohrs als separate Teile kann das Mischrohr je nach Bedarf eingesetzt und beispielsweise zwecks Reinigung wieder entfernt werden. Der dichtende Vorsprung des Flansches verhindert ein Eindringen von Mörtelmasse zwischen die beiden Gummiteile.According to an alternative embodiment, the mixing tube of the post-mixer and a delivery tube of the eccentric screw pump are formed as separate parts and fasteners, such as a flange, connected to each other, wherein the flange has a radially inwardly projecting, annular projection, which between the rubber insert of the mixing tube and a rubber insert of the conveyor tube is arranged and sealingly applied thereto. By forming the mixing tube and the delivery tube as separate parts, the mixing tube can be used as needed and removed, for example, for cleaning again. The sealing projection of the flange prevents penetration of mortar mass between the two rubber parts.

Vorzugsweise ist der Gummieinsatz des Mischrohrs materialschlüssig mit dem Außenrohr des Mischrohrs durch Einvulkanisieren verbunden, wodurch ein fester Sitz des Gummieinsatzes am Außenrohr erreicht wird.Preferably, the rubber insert of the mixing tube is materially connected to the outer tube of the mixing tube by vulcanization, whereby a tight fit of the rubber insert is achieved on the outer tube.

Gemäß einer weiteren Ausführungsform ist die Gegenfläche des Mischrohrs aus Metall, vorzugsweise aus Stahl, gebildet, wobei das Mischrohr ein Stahlrohr umfasst, dessen Innenfläche die Gegenfläche bildet, und die Wirkfläche des Rotors ist aus Gummi gebildet, wobei der Rotor einen Rotorkern umfasst, der mit einem Gummiüberzug, beispielsweise in Form eines Gummischlauchs versehen ist, dessen Außenfläche die Wirkfläche des Rotors bildet. Der Rotorkern ist zweckmäßigerweise aus Metall bzw. aus Stahl hergestellt und bildet einen stabilen Untergrund für den Gummiüberzug. Durch den Gummiüberzug wird eine elastisch nachgiebige Wirkfläche geschaffen, die anhand des starren Rotorkerns zugleich einen erhöhten Druck auf die Mörtelmasse ausüben kann.According to a further embodiment, the counter surface of the mixing tube is made of metal, preferably steel, wherein the mixing tube comprises a steel tube whose inner surface forms the counter surface, and the effective surface of the rotor is formed of rubber, wherein the rotor comprises a rotor core, which with a rubber coating, for example in the form of a rubber tube is provided, whose outer surface forms the effective surface of the rotor. The rotor core is suitably made of metal or steel and forms a stable base for the rubber coating. By the rubber coating an elastically yielding effective surface is created, which can exert on the basis of the rigid rotor core at the same time an increased pressure on the mortar mass.

Vorteilhafterweise ist der Rotorkern und der Gummiüberzug an dem Fortsatz des Schneckenrotors befestigt, wobei der Rotorkern vorzugsweise durch Verschweißen und der Gummiüberzug über ein oder mehrere Befestigungselemente am Fortsatz fixiert sind. Durch diese konstruktive Maßnahme ist der Gummiüberzug sicher am Rotorkern angebracht und hält auch einer hohen Beanspruchung stand. Zusätzlich kann der Gummiüberzug mit dem Rotorkern verklebt sein.Advantageously, the rotor core and the rubber coating is attached to the extension of the screw rotor, wherein the rotor core are preferably fixed by welding and the rubber coating on one or more fasteners on the extension. This constructive measure of the rubber coating is securely attached to the rotor core and also withstands high stress. In addition, the rubber coating may be glued to the rotor core.

Die Erfindung wird nachstehend auch hinsichtlich weiterer Merkmale und Vorteile anhand von Ausführungsbeispielen und unter Bezugnahme auf die beiliegenden Zeichnungen näher erläutert.The invention will be explained below with regard to further features and advantages with reference to embodiments and with reference to the accompanying drawings.

Hierbei zeigen:

FIG 1
eine schematische Darstellung einer erfindungsgemäßen Vorrichtung gemäß einer ersten Ausführungsform in Schnittansicht,
FIG 2
eine alternative Ausgestaltung der Vorrichtung von FIG 1 in Schnittansicht,
und
FIG 3
eine schematische Darstellung der Vorrichtung gemäß einer zweiten Ausführungsform, in Schnittansicht.
Hereby show:
FIG. 1
a schematic representation of a device according to the invention according to a first embodiment in sectional view,
FIG. 2
an alternative embodiment of the device of FIG. 1 in sectional view,
and
FIG. 3
a schematic representation of the device according to a second embodiment, in sectional view.

In FIG 1 ist eine schematische Darstellung einer Vorrichtung gemäß einer ersten Ausführungsform in Schnittansicht gezeigt. Die Vorrichtung umfasst einen Hauptmischer zum Mischen von Trockenmörtel und Wasser (nicht gezeigt). Dem Hauptmischer ist eine Exzenter-Schneckenpumpe 8 nachgeordnet, um die vorgemischte Mörtelmasse, insbesondere eine feinkörnige Mörtelmasse, wie eine Spachtelmasse, in Förderrichtung F zu einem Nachmischer 1 zu befördern. Die Exzenter-Schneckenpumpe 8 weist ein Förderrohr 10 auf, das ein Außenrohr 11 und eine Gummieinlage 12 umfasst, die an der Innenseite des Außenrohrs 11 angeordnet ist. Die Gummieinlage 12 bildet einen schneckengangförmigen Förderkanal 13, durch den die Mörtelmasse mittels eines im Förderkanal 13 rotierenden, exzentrischen Schneckenrotors 9 zum Nachmischer 1 gepumpt wird.In FIG. 1 is a schematic representation of a device according to a first embodiment shown in sectional view. The apparatus comprises a main mixer for mixing dry mortar and water (not shown). The main mixer is followed by an eccentric screw pump 8 in order to convey the premixed mortar composition, in particular a fine-grained mortar composition, such as a filler, in the conveying direction F to a post-mixer 1. The eccentric screw pump 8 has a delivery tube 10, which comprises an outer tube 11 and a rubber insert 12, which is arranged on the inside of the outer tube 11. The rubber insert 12 forms a screw-shaped conveying channel 13, through which the mortar composition is pumped by means of a rotating in the conveying channel 13, eccentric screw rotor 9 to the after-mixer 1.

Der Nachmischer 1 ist an einem Auslass 14 der Exzenter-Schneckenpumpe 8 angeordnet und umfasst ein Mischrohr 4 und einen länglichen, insbesondere stangen- oder zapfenförmigen Rotor 2, der exzentrisch im Mischrohr 4 angeordnet ist. Der Rotor 2 ist an einem dem Nachmischer 1 zugeordneten Endbereich 25 des Schneckenrotors 9 angeordnet und einstückig mit diesem ausgebildet. Der Rotor 2 des Nachmischers 1 erstreckt sich ausgehend vom Schneckenrotor 9 in Förderrichtung F bzw. parallel zu einer Mittelachse A des Mischrohrs 4 über die Länge L des Mischrohrs 4 und ragt ein Stück weit aus dem Mischrohr 4 heraus, um sich gegen eine Stützplatte oder ein anders Stützelement (z.B. Zapfen) (nicht gezeigt) abzustützen. Ebenso kann auch die Abstützung bündig am Ende des Mischrohrs oder sogar im Mischrohr erfolgen, wenn das Stützelement in das Mischrohr hineinragt.The secondary mixer 1 is arranged at an outlet 14 of the eccentric screw pump 8 and comprises a mixing tube 4 and an elongated, in particular rod-shaped or pin-shaped rotor 2, which is arranged eccentrically in the mixing tube 4. The rotor 2 is arranged on an end region 25 of the screw rotor 9 assigned to the post-mixer 1 and formed integrally therewith. The rotor 2 of the post-mixer 1 extends from the screw rotor 9 in the conveying direction F or parallel to a central axis A of the mixing tube 4 over the length L of the mixing tube 4 and protrudes a little way out of the mixing tube 4, against a support plate or a support other support element (eg pin) (not shown) support. Likewise, the support can be made flush at the end of the mixing tube or even in the mixing tube when the support member projects into the mixing tube.

Das Mischrohr 4 umfasst ein Außenrohr 6 und einen Gummieinsatz 7, der an der Innenseite des Außenrohrs 6 angebracht ist und materialschlüssig mit dem Außenrohr 6 durch Einvulkanisieren verbunden ist. Der Rotor 2 des Nachmischers 1 und der Schneckenrotor 9 sind aus Metall, zweckmäßigerweise aus Stahl, hergestellt. Der Gummieinsatz 7 und das Außenrohr 6 des Mischrohrs 4 sind jeweils einstückig mit der Gummieinlage 12 und dem Außenrohr 11 des Förderrohrs 10 ausgebildet, so dass der Nachmischer 1 einen integralen Bestandteil der Exzenter-Schneckenpumpe 8 bildet. Die zylindrische Außenfläche des Rotors 2 bildet eine Wirkfläche 3, die im Wesentlichen dicht, d.h. im Wesentlichen spaltlos, an der zylindrischen Innenfläche des Gummieinsatzes 7 anliegt. Die Innenfläche des Gummieinsatzes 7 bildet eine mit der unelastischen oder starren Wirkfläche 3 des Rotors 2 zusammenwirkende elastische Gegenfläche 5. Zusätzlich kann der Rotor 2 mit seiner Wirkfläche 3 gegen die Gegenfläche 5 des Mischrohrs 4 gedrückt sein.The mixing tube 4 comprises an outer tube 6 and a rubber insert 7, which is attached to the inside of the outer tube 6 and is materially connected to the outer tube 6 by vulcanization. The rotor 2 of the post-mixer 1 and the worm rotor 9 are made of metal, suitably of steel. The rubber insert 7 and the outer tube 6 of the mixing tube 4 are each formed integrally with the rubber insert 12 and the outer tube 11 of the conveyor tube 10, so that the after-mixer 1 forms an integral part of the eccentric screw pump 8. The cylindrical outer surface of the rotor 2 forms an active surface 3 which is substantially dense, i. essentially without gaps, abuts the cylindrical inner surface of the rubber insert 7. The inner surface of the rubber insert 7 forms a cooperating with the inelastic or rigid active surface 3 of the rotor 2 elastic mating surface 5. In addition, the rotor 2 may be pressed with its active surface 3 against the mating surface 5 of the mixing tube 4.

Der Rotor 2 wird von dem Schneckenrotor 9 angetrieben, so dass er mit seiner Wirkfläche 3 entsprechend der Rotationsbewegung des Schneckenrotors 9 um die Mittelachse A entlang der Gegenfläche 5 rotiert. Die Mörtelmasse, die in Förderrichtung F an der Gegenfläche 5 des Mischrohrs 4 entlang befördert wird, wird durch die Rotations- oder Umlaufbewegung des Rotors 2 zwischen der unelastischen bzw. starren Wirkfläche 3 des Rotors 2 und der elastischen Gegenfläche 5 hindurchgeführt, gedrückt und gerieben, wobei die elastische Gegenfläche 5 beim Durchführen und Drücken der Mörtelmasse elastisch nachgibt.The rotor 2 is driven by the worm rotor 9, so that it rotates with its active surface 3 in accordance with the rotational movement of the worm rotor 9 about the central axis A along the mating surface 5. The mortar mass, which is conveyed along the opposite surface 5 of the mixing tube 4 in the conveying direction F, is passed through the rotational or rotational movement of the rotor 2 between the inelastic or rigid active surface 3 of the rotor 2 and the elastic counter surface 5, pressed and rubbed, wherein the elastic counter surface 5 yields elastically during the passage and pressing of the mortar composition.

Die Wirkfläche 3 des Rotors 2 und die Gegenfläche 5 des Mischrohrs 4 sind im Wesentlichen eben oder glatt ausgebildet. Alternativ kann die Wirkfläche oder die Gegenfläche strukturiert sein und beispielsweise mit quer zur Förderrichtung F verlaufenden Rillen oder Wülsten versehen sein (nicht gezeigt).The active surface 3 of the rotor 2 and the mating surface 5 of the mixing tube 4 are formed substantially flat or smooth. Alternatively, the active surface or the mating surface may be structured and provided, for example, with grooves or beads running transversely to the conveying direction F (not shown).

Der Gummieinsatz 7 und die Gummieinlage 12 sind aus einem aus Synthese-oder Naturkautschuk hergestellten, verschleißfesten Elastomer gebildet, beispielsweise NR und/oder SBR.The rubber insert 7 and the rubber insert 12 are formed from a wear-resistant elastomer made of synthetic or natural rubber, for example NR and / or SBR.

In FIG 2 ist eine alternative Ausgestaltung der Vorrichtung von FIG 1 in Schnittansicht gezeigt. Das Mischrohr 4 des Nachmischers 1 und das Förderrohr 10 der Exzenter-Schneckenpumpe 9 sind als separate Teile ausgebildet und über einen Flansch 15 miteinander verbunden. Der Flansch 15 weist einen radial nach innen ragenden, ringförmigen Vorsprung 16 auf, der zwischen dem Gummieinsatz 7 des Mischrohrs 4 und der Gummieinlage 12 des Förderrohrs 10 angeordnet ist und dichtend daran anliegt. Der Vorsprung 16 schließt etwa bündig mit dem Gummieinsatz 7 und der Gummieinlage 12 ab und bildet somit einen kontinuierlichen Übergang von der Gummieinlage 12 zum Gummieinsatz 7.In FIG. 2 is an alternative embodiment of the device of FIG. 1 shown in sectional view. The mixing tube 4 of the post-mixer 1 and the delivery tube 10 of the eccentric screw pump 9 are formed as separate parts and connected to each other via a flange 15. The flange 15 has a radially inwardly projecting, annular projection 16 which is disposed between the rubber insert 7 of the mixing tube 4 and the rubber insert 12 of the conveyor tube 10 and sealingly abuts thereon. The projection 16 terminates approximately flush with the rubber insert 7 and the rubber insert 12 and thus forms a continuous transition from the rubber insert 12 to the rubber insert 7.

In FIG 3 ist eine schematische Darstellung einer zweiten Ausführungsform der Vorrichtung in Schnittansicht gezeigt. Das Mischrohr 4 des Nachmischers 1 umfasst ein Stahlrohr 18, dessen Innenfläche die Gegenfläche 5 bildet. Der Rotor 2 des Nachmischers 1 weist einen Rotorkern 26 auf, der aus Metall, insbesondere aus Stahl hergestellt ist und mit einem Ende an dem Endbereich 25 des Schneckenrotors 9 befindlichen Fortsatz 19 lose anliegt und am anderen Ende wieder auf dem nicht dargestellten Stützelement abgestützt ist. Der Rotorkern 26 ist mit einem Gummiüberzug 17 in Form eines Gummischlauchs versehen, dessen Außenfläche die Wirkfläche 3 bildet. Der Gummiüberzug 17 ist am Fortsatz 19 des Schneckenrotors 9 über Befestigungselemente 20, beispielsweise über Schraub- oder Klemmmittel, befestigt.In FIG. 3 is a schematic representation of a second embodiment of the device shown in sectional view. The mixing tube 4 of the post-mixer 1 comprises a steel tube 18, the inner surface of which forms the mating surface 5. The rotor 2 of the post-mixer 1 has a rotor core 26, which is made of metal, in particular made of steel and with one end to the end portion 25 of the screw rotor 9 located extension 19 loosely applied and is supported at the other end again on the support member, not shown. The rotor core 26 is provided with a rubber coating 17 in the form of a rubber hose whose outer surface forms the active surface 3. The rubber cover 17 is attached to the extension 19 of the worm rotor 9 via fastening elements 20, for example via screw or clamping means.

Im Unterschied zur vorhergehenden Ausführungsform ist die Wirkfläche 3 des Rotors 2 elastisch und die Gegenfläche 5 des Mischrohrs 4 vergleichsweise unelastisch bzw. starr ausgebildet. Der Rotor 2 liegt mit seiner elastischen Wirkfläche 3 im Wesentlichen dicht an der unelastischen bzw. starren Gegenfläche 5 an. Zusätzlich kann der Rotor 2 mit seiner Wirkfläche 3 gegen die Gegenfläche 5 gedrückt sein. Die Mörtelmasse wird durch die Rotations- oder Umlaufbewegung des Rotors 2 zwischen der elastischen Wirkfläche 3 des Rotors 2 und der unelastischen Gegenfläche 5 hindurchgeführt, gedrückt und gerieben, wobei die elastische Wirkfläche 3 beim Durchführen und Drücken der Mörtelmasse elastisch nachgibt.In contrast to the previous embodiment, the active surface 3 of the rotor 2 is elastic and the mating surface 5 of the mixing tube 4 is comparatively inelastic or rigid. The rotor 2 rests with its elastic active surface 3 substantially close to the inelastic or rigid mating surface 5. In addition, the rotor 2 with its active surface 3 against the counter surface 5 to be pressed. The mortar composition is passed through the rotational or rotational movement of the rotor 2 between the elastic active surface 3 of the rotor 2 and the inelastic mating surface 5, pressed and rubbed, wherein the elastic active surface 3 yields elastically during the execution and pressing of the mortar composition.

Das Stahlrohr 18 ist über einen Flansch 21 mit dem Förderrohr 10 der Exzenter-Schneckenpumpe 8 verbunden. Der Flansch 21 weist einen ersten, radial nach innen ragenden, ringförmigen Vorsprung 22 auf, der dem Förderrohr 10 zugeordnet ist und dichtend an der Gummieinlage 12 des Föxderrohrs 10 anliegt. Ein zweiter, radial nach innen ragender, ringförmiger Vorsprung 24 des Flansches 21 ist dem Stahlrohr 18 zugeordnet und liegt dichtend daran an. Zwischen dem ersten Vorsprung 22 und dem zweiten Vorsprung 24 ist ein Zwischenraum 23 zum Durchführen der seitlich bzw. radial nach außen vorstehenden Befestigungselemente 20 gebildet.The steel pipe 18 is connected via a flange 21 to the delivery pipe 10 of the eccentric screw pump 8. The flange 21 has a first, radially inwardly projecting, annular projection 22 which is associated with the conveying tube 10 and sealingly abuts the rubber insert 12 of the Föxderrohrs 10. A second, radially inwardly projecting, annular projection 24 of the flange 21 is associated with the steel tube 18 and sealingly abuts against it. Between the first projection 22 and the second projection 24, a gap 23 for carrying out the laterally or radially outwardly projecting fastening elements 20 is formed.

Alternativ können sowohl die Wirkfläche 3 des Rotors 2 als auch die Gegenfläche 5 des Mischrohrs 4 elastisch ausgebildet sein, wobei das Mischrohr 4 den Gummieinsatz 7 aufweist und der Rotor 2 bzw. der Rotorkern 26 zusätzlich mit dem Gummiüberzug 17 versehen ist.Alternatively, both the active surface 3 of the rotor 2 and the counter surface 5 of the mixing tube 4 may be elastic, wherein the mixing tube 4 has the rubber insert 7 and the rotor 2 and the rotor core 26 is additionally provided with the rubber coating 17.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Nachmischerremixer
22
Rotorrotor
33
Wirkflächeeffective area
44
Mischrohrmixing tube
55
Gegenflächecounter surface
66
Außenrohr (Mischrohr)Outer tube (mixing tube)
77
Gummieinsatzrubber insert
88th
Exzenter-SchneckenpumpeEccentric screw pump
99
Schneckenrotorscrew rotor
1010
Förderrohrdelivery pipe
1111
Außenrohr (Förderrohr)Outer tube (conveyor tube)
1212
Gummieinlagerubber insert
1313
Förderkanaldelivery channel
1414
Auslassoutlet
1515
Flanschflange
1616
Vorsprunghead Start
1717
Gummiüberzugrubber coating
1818
Stahlrohrsteel tube
1919
Fortsatzextension
2020
Befestigungselementefasteners
2121
Flanschflange
2222
Erster VorsprungFirst advantage
2323
Zwischenraumgap
2424
Zweiter VorsprungSecond advantage
2525
Endbereichend
2626
Rotorkernrotor core
AA
Mittelachsecentral axis
FF
Förderrichtungconveying direction
LL
Längelength

Claims (11)

  1. Device for manufacturing a flowable mass, in particular a fine-grained mortar mass, such as a filler, comprising a main mixer for mixing dry mortar with water, and a pump (8), in particular an eccentric screw pump (8), to convey the premixed mass to a subsequent mixer (1), wherein the subsequent mixer (1) has a rotor (2) with a working surface (3), in particular on the outer surface of the rotor, and a mixing tube (4) with a, in particular cylindrical, mating surface (5), in particular on the inner surface of the mixing tube,
    characterised in that
    the rotor (2) is eccentrically arranged in the mixing tube (4) and can be driven via a pump rotor (9), in particular by means of an eccentric screw rotor (9) of the eccentric screw pump (8), in such a way that it can be rotated with its effective surface (3) around a central axis (A) of the mixing tube (4) along the mating surface (5), whereby clumps or lumps or similar inhomogeneities still contained in the mass, in particular mortar mass, are at least predominantly crushed or ground between the effective surface (3) and the mating surface (5).
  2. Device according to Claim 1, wherein the rotor (2) is elongated, preferably in the shape of a rod or pin, and/or is so dimensioned in its length that it is somewhat shorter than the length of the mixing tube and/or extends substantially through the entire mixing tube and/or wherein the rotor has a circular or oval or elliptical cross section and/or is axially adjustable in its cross section along its length, in particular becomes thicker in the direction of conveyance.
  3. Device according to one of the Claims 1 or 2, wherein the rotor is supported against a support surface, in particular in order to absorb the reaction forces or counter forces with a return motion of the pump, i.e. if the pump moves counter to the direction of conveyance, and wherein the support surface inside the mixing tube is arranged to be flush at the end of the latter or outside of the mixing tube depending on the length of the rotor.
  4. Device according to one of the Claims 1 to 3, wherein the rotor (2) of the subsequent mixer (1) is arranged on an eccentric end area (25) of the screw rotor (9) that is assigned to the subsequent mixer (1), in particular is integrally formed with the screw rotor (9) of the eccentric screw pump (8) or is connected by welding and/or by means of fasteners to the screw rotor (9) of the eccentric screw pump (8), in particular to an extension (19) of the screw rotor (9) at its end area (25) assigned to the subsequent mixer (1).
  5. Device according to one of the Claims 1 to 4, wherein the effective surface (3) of the rotor (2) substantially lies closely against the mating surface (5) of the mixing tube (4) or at least is pressed lightly against the mating surface (5), wherein effective surface (3) and/or the mating surface (5) is manufactured from an elastic material, such as a wear-resistant rubber made from synthetic or natural rubber, and/or wherein the effective surface (3) of the rotor (2) and the mating surface (5) of the mixing tube (4) are substantially configured to be even or smooth and/or wherein the effective surface (3) of the rotor (2) and the mating surface (5) of the mixing tube (4) are each formed from materials with varying elastic properties, whereby an elastic material, such as rubber, and a comparably inflexible material, such as metal, preferably steel, is chosen as a material pair.
  6. Device according to one of the Claims 1 to 5, wherein the mating surface (5) of the mixing tube (4) is made of a rubber, whereby the mixing tube (4) has an outer tube (6) and a rubber insert (7), which is accommodated on the inside of the outer tube (6) and the surface of which forms the mating surface (5), whereby preferably the mixing tube (4) of the subsequent mixer (1) is configured integrally with a delivery pipe (10) of the eccentric screw pump (8), whereby the outer tube (6) and the rubber insert (7) of the mixing tube (4) are each integrally configured with an outer tube (11) and a rubber inlay (12) of the delivery pipe (10), or whereby preferably the mixing tube (4) of the subsequent mixer (1) and a delivery pipe (10) of the eccentric screw pump (8) are configured as separate parts and are connected to each other by means of fastenings (15), such as a flange (15), whereby the flange (15) has an annular projection (16) projecting radially inwards, which is arranged between the rubber insert (7) of the mixing tube (4) and a rubber inlay (12) of the delivery pipe (10) and lies against it, sealing it, and/or whereby preferably the rubber insert (7) of the mixing tube (4) is connected materially to the outer tube (6) of the mixing tube (4) through integral vulcanisation.
  7. Device according to one of the Claims 1 to 5, wherein the mating surface (5) of the mixing tube (4) is formed from metal, preferably steel, and the effective surface (3) of the rotor (2) is formed from rubber.
  8. Device according to Claim 7, wherein the rotor (2) comprises a rotor core (26), which is provided with a rubber coating (17), for example in the form of a rubber hose, the outer surface of which forms the effective surface (3) of the rotor (2), whereby the rotor core preferably consists of metal, in particular steel, and/or preferably is arranged loosely or positively between the screw rotor and a support surface and/or whereby preferably the rubber coating (17) is attached to the screw rotor (9), in particular to a projection (19) of the screw rotor (9), in particular by means of one or more fastening elements (20).
  9. Device according to one of the Claims 1 to 8, wherein the steel tube (18) is connected to a delivery pipe (10) of the eccentric screw pump (8) by fastenings (21), such as a flange (21), whereby the flange (21) has two annular projections (22, 24) projecting radially inwards, which lie in each case on a rubber inlay (12) of the delivery pipe (10) and on the steel tube (18), sealing them, whereby an interspace (23) is formed between the projections (22, 24) for guiding through the fastening elements (20) for the rubber coating (17).
  10. Method for manufacturing a flowable mass, in particular a fine-grained mortar mass, such as a filler, by using a device in accordance with one of the Claims 1 to 9, wherein dry mortar and water are collected in a main mixer and mixed together, and the premixed mass is then conveyed by means of a conveyor unit, in particular a pump, preferably an eccentric screw pump, to a subsequent mixer (1),
    whereby the mass in the subsequent mixer (1) is guided between an effective surface (3) and a mating surface (5), in that the mass is conveyed in a direction of conveyance (F) along the mating surface (5) and the effective surface (3) is at least moved approximately at right angles to the direction of conveyance (F) of the mass or in a rotational or circular movement around a central axis (A) of the subsequent mixer (1) along the mating surface (5), whereby clumps or lumps or similar inhomogeneities still contained in the mass, in particular mortar mass, are at least predominantly crushed or ground between the effective surface (3) and the mating surface (5).
  11. Method according to Claim 10, wherein the effective surface (3) is substantially moved closely along the mating surface (5) or is at least pressed lightly against the mating surface (5), whereby the effective surface (3) and/or the mating surface (5) are elastic or the mating surface (5) is elastic and the effective surface (3) is comparatively inflexible or rigid or wherein the effective surface (3) is elastic and the mating surface (5) is comparatively inflexible or rigid.
EP05010454A 2005-05-13 2005-05-13 Device and method for making a flowable mass Active EP1721717B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE502005005028T DE502005005028D1 (en) 2005-05-13 2005-05-13 Method and device for producing a flowable mass
AT05010454T ATE404339T1 (en) 2005-05-13 2005-05-13 METHOD AND DEVICE FOR PRODUCING A FLOWABLE MASS
EP05010454A EP1721717B1 (en) 2005-05-13 2005-05-13 Device and method for making a flowable mass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05010454A EP1721717B1 (en) 2005-05-13 2005-05-13 Device and method for making a flowable mass

Publications (2)

Publication Number Publication Date
EP1721717A1 EP1721717A1 (en) 2006-11-15
EP1721717B1 true EP1721717B1 (en) 2008-08-13

Family

ID=34981989

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05010454A Active EP1721717B1 (en) 2005-05-13 2005-05-13 Device and method for making a flowable mass

Country Status (3)

Country Link
EP (1) EP1721717B1 (en)
AT (1) ATE404339T1 (en)
DE (1) DE502005005028D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007013820U1 (en) 2007-10-02 2008-11-06 Knauf Pft Gmbh & Co.Kg Device for conveying a flowable conveying mass, in particular a fibrous biomass
DE102009047717A1 (en) * 2009-12-09 2011-06-16 Putzmeister Mörtelmaschinen GmbH Cavity Pump
DE202018103387U1 (en) 2018-06-15 2019-06-18 Knauf Pft Gmbh & Co. Kg Device for producing a flowable mass

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580551A (en) * 1951-03-08 1952-01-01 Kacena Jerome Scraper-blade assembly for plaster mixers and the like
DE1117981B (en) * 1957-05-16 1961-11-23 Cfmc Device for mixing powdery substances
SE346493B (en) * 1969-12-16 1972-07-10 Trelleborgs Gummifabriks Ab
DE3230763A1 (en) * 1982-08-16 1984-02-16 Schering AG, 1000 Berlin und 4709 Bergkamen DEVICE FOR REMOVING SUBSTANCES ON CONTAINER WALLS
AT385309B (en) * 1986-06-13 1988-03-25 Gd Anker Gmbh & Co Kg Arrangement for the high-pressure delivery of building materials
FR2671754B1 (en) * 1991-01-22 1997-07-25 Omniplastic Sa PROCESS AND DEVICE FOR THE CONTINUOUS PREPARATION, TRANSFER AND APPLICATION OF AN AQUEOUS MINERAL SUSPENSION FLUID OF SCRAPING.

Also Published As

Publication number Publication date
DE502005005028D1 (en) 2008-09-25
EP1721717A1 (en) 2006-11-15
ATE404339T1 (en) 2008-08-15

Similar Documents

Publication Publication Date Title
EP1914056B1 (en) Device for the continuous and intensive mixing of dry mortar
EP3646943B1 (en) Method for producing a structure from building material
AT515881B1 (en) Sequential continuous mixing plant
AT512679B1 (en) Device for mixing
DE2637558A1 (en) METHOD AND DEVICE FOR GENERATING A CONTINUOUS FLOW OF MATERIAL
DE3809661C2 (en) Device for continuously mixing a building material
EP2118400A2 (en) Mixing and transporting device for mortar
DE10233213B4 (en) extruder
DE102011006636A1 (en) Pug mill mixer i.e. concrete mixer, for use in construction site for mixing liquid, powdery and/or granular components, has vibrating device coupled to shaft and actuated to simulate shaft for enabling vibration movements
EP1918020A2 (en) Mixing device for flowable materials, in particular building material mixtures
EP2663435B1 (en) Admixture piece and housing element for a mixing device
WO2019076631A1 (en) Twin-flight screw shaft for a mixing and kneading machine
EP1721717B1 (en) Device and method for making a flowable mass
EP1676630B1 (en) Mixing apparatus
EP2343170B1 (en) Method and device for continuous mixing of materials containing clay and materials with mixing behaviour similar to clay
DE202007013820U1 (en) Device for conveying a flowable conveying mass, in particular a fibrous biomass
EP3581264B1 (en) Device for manufacturing a flowable medium
EP0592793A1 (en) Method and apparatus for applying mortar or concrete through spraying
DE4329568C2 (en) Device for conveying a dry, spreadable building material and method for using this device in earth building
DE2947913A1 (en) Wet concrete spraying machine - has water and additive pipe sockets where mixer vanes interrupt worm gear
EP0574728A1 (en) Checking and transporting of a building material mixture
AT523366B1 (en) Mixer of a continuous mixing plant
DE19812154A1 (en) Mixing and conveying apparatus used e.g. for mixing and conveying mortar mixtures
EP2933079B1 (en) Device for making dry building materials that are difficult to wet
DE1557006C (en) Device for mixing powdery to granular substances with a liquid

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

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

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

17P Request for examination filed

Effective date: 20061031

AKX Designation fees paid

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

17Q First examination report despatched

Effective date: 20070719

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 502005005028

Country of ref document: DE

Date of ref document: 20080925

Kind code of ref document: P

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

Ref country code: LT

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

Effective date: 20080813

Ref country code: ES

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

Effective date: 20081124

Ref country code: IS

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

Effective date: 20081213

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

Ref country code: SI

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

Effective date: 20080813

Ref country code: FI

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

Effective date: 20080813

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

Ref country code: IE

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

Effective date: 20080813

Ref country code: DK

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

Effective date: 20080813

Ref country code: BG

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

Effective date: 20081113

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

Ref country code: SK

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

Effective date: 20080813

Ref country code: CZ

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

Effective date: 20080813

Ref country code: PT

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

Effective date: 20090113

Ref country code: RO

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

Effective date: 20080813

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20090514

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

Ref country code: EE

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

Effective date: 20080813

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

Ref country code: IT

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

Effective date: 20080813

BERE Be: lapsed

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

Effective date: 20090531

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

Ref country code: MC

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

Effective date: 20090531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 20090513

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

Ref country code: LI

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

Effective date: 20090531

Ref country code: SE

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

Effective date: 20081113

Ref country code: CH

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

Effective date: 20090531

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100129

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

Ref country code: FR

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

Effective date: 20090602

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

Ref country code: GB

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

Effective date: 20090513

Ref country code: PL

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

Effective date: 20080813

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

Ref country code: BE

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

Effective date: 20090531

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

Ref country code: GR

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

Effective date: 20081114

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

Ref country code: LU

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

Effective date: 20090513

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

Ref country code: HU

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

Effective date: 20090214

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

Ref country code: TR

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

Effective date: 20080813

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

Ref country code: CY

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

Effective date: 20080813

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

Ref country code: NL

Payment date: 20120530

Year of fee payment: 8

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20131201

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

Ref country code: NL

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

Effective date: 20131201

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

Ref country code: DE

Payment date: 20230530

Year of fee payment: 19

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

Ref country code: AT

Payment date: 20230419

Year of fee payment: 19

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230822