EP3581264B1 - Dispositif de fabrication d'une matière coulante - Google Patents

Dispositif de fabrication d'une matière coulante Download PDF

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Publication number
EP3581264B1
EP3581264B1 EP19180301.4A EP19180301A EP3581264B1 EP 3581264 B1 EP3581264 B1 EP 3581264B1 EP 19180301 A EP19180301 A EP 19180301A EP 3581264 B1 EP3581264 B1 EP 3581264B1
Authority
EP
European Patent Office
Prior art keywords
mixing
rotor
conveying
pipe
thread
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
EP19180301.4A
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German (de)
English (en)
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EP3581264A1 (fr
Inventor
Helmut SCHARDT
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
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Publication date
Application filed by Knauf PFT GmbH and Co KG filed Critical Knauf PFT GmbH and Co KG
Priority to PL19180301T priority Critical patent/PL3581264T3/pl
Publication of EP3581264A1 publication Critical patent/EP3581264A1/fr
Application granted granted Critical
Publication of EP3581264B1 publication Critical patent/EP3581264B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/53—Mixing liquids with solids using driven stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
    • B01F27/053—Stirrers characterised by their elements, materials or mechanical properties characterised by their materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B01F27/1143—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections screw-shaped, e.g. worms
    • 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
    • B01F35/511—Mixing receptacles provided with liners, e.g. wear resistant or flexible liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71775—Feed mechanisms characterised by the means for feeding the components to the mixer using helical screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/1238—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices
    • B28C5/1276—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices with consecutive separate containers with rotating stirring and feeding or discharging means
    • 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

Definitions

  • the invention relates to a device for producing a flowable mortar mass, in particular a fine-grained mortar mass, such as a filler.
  • fine-grained mortar masses such as fillers, which are used to fill holes and cracks or to completely fill plasterboard
  • the mortar mass is mixed by so-called soaking. Dry mortar is sprinkled on top of water, which soaks up the water, and the mortar mass is then mixed.
  • nodules and smaller lumps form, which make continuous mixing and conveying difficult.
  • these fine-grain mortar mixtures are therefore first mixed in a separate mixer and, after a longer mixing time, fed to a pump for delivery. Thus, only batch operation is possible with the prior art.
  • a device is known with which thin-bodied foam pulp or a thin-bodied, foamy mortar mass can be continuously produced in a nodule-free, homogeneous consistency and with which a high conveying capacity is achieved.
  • the device comprises a main mixer for mixing dry mortar with water and an eccentric screw pump arranged 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 in the center of a housing. Water is fed into the housing, which is mixed with the mortar mass by the vane rotor in order to obtain a thin-flowing mortar mass. Smaller ones However, nodules or lumps are hardly detected by the vane rotor, since they can avoid the vane rotor.
  • a device for producing a flowable mortar mass, in particular a fine-grained mortar mass is known.
  • the mixer rotor of the post-mixer is attached eccentrically to a conveyor rotor of an eccentric screw pump.
  • the mixing rotor is essentially rod-shaped and serves to grind lumps or nodules contained in the mortar mass between an active surface of the mixing rotor and an opposing surface, in particular an inner surface, of a mixing tube.
  • An eccentric screw pump for the delivery of fluids, in particular liquid mortar, with a stator consisting of an elastomer, a pump cavity shaped like a two or more coarse thread, and with a motor-driven stator that extends through the pump cavity with radial eccentricity and is driven by a motor High helix shaped rotor.
  • the pump cavity opens into a mixing chamber in which a mixing element connected to the rotor in a rotationally fixed manner engages.
  • the mixing element is equipped with turbine blades, forming a turbine insert, which are directed against the direction of flow of the fluid for a given direction of rotation of the rotor.
  • the inside diameter of the mixing chamber with the mixing element is larger than the pump cavity.
  • the mixing element is spaced from the inner wall of the mixing chamber.
  • a device for producing a flowable mass in particular a fine-grain mortar mass such as a filler, comprises a main mixer for mixing dry mortar with water and a rotating displacement pump, in particular an eccentric screw pump, for conveying the premixed mass to a post-mixer.
  • the rotating positive displacement pump has a delivery rotor which can be rotated in a stator, in particular an eccentric worm rotor, with a delivery thread.
  • the post-mixer has a mixing rotor with an active surface, in particular arranged on the outer surface of the mixing rotor, and a mixing tube with a counter surface, in particular arranged on the inner surface of the mixing pipe.
  • the mixing rotor can be driven via the conveying rotor in such a way that the active surface of the mixing rotor can be rotated about a central axis of the mixing tube along the counter surface.
  • the mixing rotor is designed so that the conveying direction or the conveying direction or the conveyed material flow of the mixing rotor of the post-mixer is at least partially or altogether opposite to the conveying direction or conveying direction or conveyed material flow of the conveying thread of the conveying rotor. In this way, turbulence is generated in the material flow, which improves the mixing.
  • the mixing rotor has a mixing thread (or: a mixing helix) which is designed to run in opposite directions to a direction of rotation (also: direction of rotation) of the conveying thread. If the conveying thread of the conveying rotor is thus designed as a right-hand thread (also: right-hand thread), then the mixing thread of the mixing rotor is designed accordingly as a left-hand thread (also: left-hand thread). In the opposite case, if the conveying thread of the conveying rotor is thus designed as a left-hand thread (also: left-hand thread), the mixing thread of the mixing rotor is corresponding designed as a right-hand thread (also: right-hand thread). As a result, an opposite conveying effect or conveying direction or conveying direction or material flow of the mixing rotor compared to the conveying thread is at least partially achieved.
  • a mixing thread or: a mixing helix
  • the device is designed to guide the mortar mass in the remixer between an active surface and a counter surface in such a way that it is conveyed in the conveying direction along the counter surface and the active surface is moved along the counter surface, the active surface in particular rotating or revolving carries out a central axis of the post-mixer along the counter surface.
  • the active surface is formed by the outer surface of the circumferential mixing thread.
  • this means that the contact area between the effective and opposing surface is essentially the Has the shape of a helix.
  • This structural design of the active surface further favors the conveyance of the material in the direction of the comminution area between the active and counter surface.
  • both thin and viscous mortar masses can be effectively homogenized without the need for additional measures to change the consistency, for example the supply of water or compressed air. Since the mixing thread itself moves material in the opposite direction to the conveying direction, more mortar mass is effectively pressed into the area between the active and opposing surface, thus improving the homogenization of the mass flow.
  • stator of the rotating displacement pump in particular a delivery pipe through which the mortar mass is delivered, has a larger internal diameter than the fluidically downstream mixing pipe. In this way, a sufficient conveying effect in the conveying direction is ensured.
  • mass flow condenses in the area of the remixer, so that the lumps can possibly already be ground up by internal friction.
  • the mixing rotor has a circular, oval or elliptical cross section.
  • the mixing rotor of the post-mixer is arranged on an end region of the feed rotor assigned to the post-mixer, in particular formed in one piece with the feed rotor, or connected to the feed rotor in a materially bonded manner by welding.
  • Such, in particular one-piece designs have the advantage of increased stability.
  • the mixing rotor is connected to the conveyor rotor by means of fastening means, in particular by means of a screw connection.
  • the mixing rotor thus forms an extension of the delivery or screw rotor of the rotating displacement pump.
  • Detachable connections allow in particular in an advantageous manner the exchange of mixing rotors depending on the need or application, in particular depending on the viscosity of the flowable mass to be produced.
  • the active surface of the rotor lies essentially close to the counter surface of the mixing tube or it is at least slightly pressed against the counter surface, the active surface and / or the counter surface being made of an elastic material such as a synthetic or natural rubber comprising, wear-resistant rubber are.
  • an elastic material such as a synthetic or natural rubber comprising, wear-resistant rubber are.
  • rubber improves the adhesion and friction of the mortar mass on the respective surface made of rubber.
  • rubber is sufficiently resilient so that the mortar mass can pass between the surfaces and be squeezed to a large extent.
  • the opposing surface is elastic and the active surface is comparatively inelastic or rigid, so that only the opposing surface yields elastically when the mortar mass is passed through and pressed. Due to the elastic counter surface and the inelastic or rigid active surface, the pressure on the mortar mass is noticeably increased with simultaneous squeezing of the mortar mass between the surfaces, so that even smaller lumps or nodules are crushed.
  • the elastic and inelastic behavior of the surfaces is reversed, the active surface being elastic and the counter surface being comparatively inelastic or rigid, so that only the active surface yields elastically when the mortar mass is passed through and pressed.
  • the mortar mass is squeezed between the surfaces and at the same time subjected to increased pressure.
  • the active surface of the mixing rotor and the counter surface of the mixing tube are each formed from materials with different elastic properties, an elastic material such as rubber and a comparatively inelastic material such as metal, preferably steel, being selected as a pair of materials.
  • an elastic material such as rubber
  • a comparatively inelastic material such as metal, preferably steel
  • the counter surface of the mixing tube is made of rubber, the mixing tube having 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 effective surface of the rotor is in particular made of metal, preferably made of Formed steel.
  • both the active surface and the opposing surface can be elastic, in which case it is particularly advantageous if the active surface is additionally pressed against the opposing surface in order to exert or maintain an increased pressure on the mortar mass.
  • a gap is provided in a circumferential section between the mixing rotor and the mixing tube.
  • the mixing rotor does not fully rest on the mixing tube.
  • the mixing tube of the post-mixer is formed in one piece with a delivery tube of the rotating positive displacement pump, the outer tube and the Rubber insert of the mixing tube are each formed in one piece with an outer tube and a rubber insert of the conveyor tube.
  • the remixer and the eccentric screw pump are combined by these structural measures to form a compact and inexpensive to manufacture unit.
  • the mixing tube of the post-mixer and a delivery tube of the eccentric screw pump are designed as separate parts and connected to one another via fastening means, such as a flange or a clamping flange, the flange having a radially inwardly protruding, ring-shaped collar between the Rubber insert of the mixing tube and a rubber insert of the conveyor pipe is arranged and rests on it in a sealing manner.
  • fastening means such as a flange or a clamping flange
  • the flange having a radially inwardly protruding, ring-shaped collar between the Rubber insert of the mixing tube and a rubber insert of the conveyor pipe is arranged and rests on it in a sealing manner.
  • the delivery pipe and the mixing pipe are preferably arranged coaxially to one another.
  • it is provided in an embodiment to brace the fastening means, in particular the flange or clamping flange, in a non-positive manner between the delivery pipe and the mixing pipe via axially acting clamping means, in particular tie rods.
  • the axial bracing is used for increased stability, so that the forces that arise when conveying highly viscous masses can also be compensated.
  • the rubber insert of the mixing tube is materially connected to the outer tube of the mixing tube by vulcanization, as a result of which the rubber insert is firmly seated on the outer tube.
  • the rubber insert of the delivery pipe is preferably materially connected to the delivery pipe of the positive displacement pump by vulcanization.
  • the pitch of the mixing thread or the mixing helix can in embodiments be axially constant or also vary axially.
  • individual mixing thread sections and / or individual mixing rotor blades or mixing rotor blades spaced from one another can also be provided on the mixing rotor, which also have a conveying direction opposite to the conveying thread and whose outer surfaces form individual active surfaces of the mixing rotor in the post-mixer.
  • 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 a rotating displacement pump 8 designed as an eccentric screw pump in order to convey the premixed mortar mass, in particular a fine-grained mortar mass such as a filler, in the conveying direction F to a post mixer 1.
  • the positive displacement pump 8 has a delivery pipe 10 which comprises an outer pipe 11 and a rubber insert 12 which is arranged on the inside of the outer pipe 11.
  • the rubber insert 12 forms a worm gear-shaped conveying channel 13 through which the mortar mass is pumped to the post-mixer 1 by means of a conveying rotor 9 rotating in the conveying channel 13, which is formed by an eccentric worm rotor.
  • the post-mixer 1 is arranged at an outlet 14 of the rotating displacement pump 8 and comprises a mixing tube 4 and a mixing rotor 2, which is arranged coaxially to the delivery rotor 9.
  • the mixing rotor 2 is arranged on an end region 25 of the conveying rotor 9 assigned to the post-mixer 1 and is fastened to it by means of a screw connection not shown in detail.
  • the mixing rotor 2 and the conveying rotor 8 are designed in one piece.
  • the mixing rotor 2 of the post-mixer 1 extends, starting from the conveying 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.
  • 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 mixing rotor 2 of the post-mixer 1 and the conveyor or screw rotor 9 are made of metal, expediently made of steel.
  • the rubber insert 7 and the outer tube 6 of the mixing tube 4 are each formed in one piece with the rubber insert 12 and the outer tube 11 of the delivery tube 10, so that the post-mixer 1 forms an integral part of the positive displacement pump 8.
  • the mixing rotor 2 has a helical mixing thread 16, the outer surface of which forms an active surface 3 which rests essentially tightly, i.e. essentially without a gap, on the cylindrical inner surface of the rubber insert 7.
  • the inner surface of the rubber insert 7 forms an elastic counter-surface 5 that interacts with the inelastic or rigid active surface 3 of the mixing rotor 2.
  • the rotor 2 can be pressed with its active surface 3 against the counter-surface 5 of the mixing tube 4.
  • the mixing rotor 2 is driven by the rotating displacement pump 8, so that its active surface 3 rotates around the central axis A along the counter surface 5 in accordance with the rotational movement of the conveyor or screw rotor 9.
  • the mortar mass which is conveyed along the opposite surface 5 of the mixing tube 4 in the conveying direction F, is guided, pressed and rubbed between the inelastic or rigid active surface 3 of the mixing rotor 2 and the elastic opposite surface 5 by the rotational or revolving movement of the mixing rotor 2, wherein the elastic mating surface 5 yields elastically when the mortar mass is passed through and pressed.
  • the mixing thread 16 is formed in the opposite direction to a conveying thread 17 of the conveying rotor, i. H.
  • Mixing thread 16 and conveying thread 17 are shaped opposite to one another with regard to their direction of rotation or their direction of rotation.
  • the conveying thread 17 is right-handed and the mixing thread 16 is left-handed. Since the conveying rotor 9 and the mixing rotor 2 are connected to one another in a rotationally fixed manner, they rotate at the same rotational speed in the conveying mode. The opposing formation of the threads causes opposing conveying movements in the conveying operation.
  • the rubber insert 7 and the rubber insert 12 are formed from a wear-resistant elastomer made from synthetic or natural rubber, for example NR and / or SBR.
  • FIG 2 is an alternative embodiment of the device of FIG FIG 1 shown in sectional view.
  • the mixing tube 4 of the post-mixer 1 and the delivery tube 10 of the rotating positive displacement pump 8 are designed as separate parts and are connected to one another via an annular flange 15.
  • the flange 15 has a radially inwardly projecting, annular collar 19 which is arranged between the rubber insert 7 of the mixing tube 4 and the rubber insert 12 of the conveying tube 10 and rests against it in a sealing manner.
  • the collar 19 ends 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 further embodiment of the device shown in sectional view.
  • the mixing tube 4 of the post mixer 1 and the Delivery pipe 10 of the rotating positive displacement pump 8 are - as in the embodiment of FIG 2 - Separate components that are connected to one another via a clamping flange 18.
  • the clamping flange 18 likewise has an annular collar 19 which projects radially inward and which lies in a sealing manner between the rubber insert 7 of the mixing tube 4 and the rubber insert 12 of the conveying tube 10.
  • the clamping flange 18 has two diametrically outwardly projecting holding elements 20 to which tension rods 21 are attached.
  • the tie rods 21 are each supported at one end of the conveying pipe 10 or on one end of the mixing pipe 4 via holding elements 22. Axial forces can be exerted along the tension rods 21 via screws 23 and thus the components fastened to them can be braced axially to one another in the axial direction, that is to say in the direction of the central longitudinal axis A.
  • the active surface 3 is each formed from an inelastic material, such as a metal, in particular steel.
  • the counter surface 5 is formed from a relatively elastic material such as rubber.
  • the opposing surface 5 can be formed, for example, from a metal and the active surface 3 from a relatively elastic material, such as rubber.
  • the mixing rotor 2 with the mixing thread 16 can be provided with a rubber coating, for example.
  • both the active surface 3 of the mixing rotor 2 and the counter surface 5 of the mixing tube 4 can be designed to be elastic, the mixing tube 4 having the rubber insert 7 and the mixing rotor 2 additionally being provided with a rubber coating.
  • the mixing thread or the mixing helix can have a constant or a varying pitch.
  • individual mixed thread sections and / or individual ones from one another can also be used in non-illustrated embodiments spaced mixing rotor blades or mixing rotor blades can be provided on the mixing rotor, which likewise have a conveying direction opposite to the conveying thread and the outer surfaces of which form individual active surfaces of the mixing rotor in the post-mixer.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (10)

  1. Dispositif permettant de fabriquer une masse fluide, en particulier une masse de mortier à grains fins, telle que du mastic, comprenant
    un mélangeur principal permettant de mélanger du mortier sec avec de l'eau, un mélangeur secondaire (1) et une pompe volumétrique rotative (8), en particulier une pompe à vis excentrée, permettant de transporter la masse prémélangée vers le mélangeur secondaire (1),
    la pompe volumétrique rotative (8) présentant un rotor d'alimentation (9), en particulier un rotor à vis excentrée, comportant un filetage d'alimentation (17) et pouvant être mis en rotation dans un stator, en particulier dans un tube d'alimentation (10), et le mélangeur secondaire (1) présentant un rotor de mélange (2) comportant une surface active (3) disposée en particulier sur la surface extérieure du rotor de mélange (2) et un tube de mélange (4) comportant une surface opposée (5) disposée en particulier sur la surface intérieure du tube de mélange (4), le rotor de mélange (2) pouvant être entraîné par l'intermédiaire du rotor d'alimentation (9) de telle sorte que la surface active (3) du rotor de mélange (2) peut être mise en rotation autour d'un axe central (A) du tube de mélange (4) le long de la surface opposée (5), le rotor de mélange (2) étant conçu de telle sorte que la direction d'alimentation du rotor de mélange du mélangeur secondaire est opposée à la direction d'alimentation du filetage d'alimentation du rotor d'alimentation au moins dans certaines parties, si bien qu'en particulier un tourbillon est produit dans la masse,
    et/ou
    le rotor de mélange (2) présentant un filetage de mélange (16) ou une hélice de mélange ou des pales ou aubes de rotor de mélange, lesquels sont formés de façon à tourner dans le sens inverse d'un sens de circonférence du filetage d'alimentation (17),
    caractérisé en ce que le stator, en particulier le tube d'alimentation (10), de la pompe volumétrique rotative (8) présente un diamètre intérieur plus grand que celui du tube de mélange (4) placé en aval de façon fluidique.
  2. Dispositif selon la revendication 1, dans lequel le rotor de mélange (2) présente une section transversale circulaire, ovale ou elliptique.
  3. Dispositif selon l'une des revendications précédentes, dans lequel le rotor de mélange (2) du mélangeur secondaire (1) est disposé sur une région d'extrémité (25) du rotor d'alimentation (9) associée au mélangeur secondaire (1), en particulier est formé d'une seule pièce avec le rotor d'alimentation (9) ou est relié au rotor d'alimentation (9) par soudage ou par l'intermédiaire de moyens de fixation, en particulier au moyen d'une liaison vissée.
  4. Dispositif selon l'une des revendications précédentes, dans lequel la surface active (3) du rotor de mélange (2) repose sensiblement à proximité de la surface opposée (5) du tube de mélange (4) ou est au moins légèrement appuyée contre la surface opposée (5), la surface active (3) et/ou la surface opposée (5) étant constituées d'un matériau élastique, tel qu'un caoutchouc résistant à l'usure et constitué d'un caoutchouc synthétique ou naturel, et/ou la surface active (3) du rotor de mélange (2) et la surface opposée (5) du tube de mélange (4) étant respectivement formées de matériaux comportant des propriétés élastiques différentes, un matériau élastique tel que du caoutchouc et un matériau comparativement inélastique tel que du métal, de préférence de l'acier, étant sélectionnés comme paire de matériaux.
  5. Dispositif selon l'une des revendications précédentes, dans lequel la surface opposée (5) du tube de mélange (4) est formée d'un caoutchouc, le tube de mélange (4) présentant un tube extérieur (6) et un insert en caoutchouc (7), lequel insert en caoutchouc est monté sur la face intérieure du tube extérieur (6) et dont la surface intérieure forme la surface opposée (5).
  6. Dispositif selon la revendication 5, dans lequel le tube de mélange (4) du mélangeur secondaire (1) est formé d'une seule pièce avec un tube d'alimentation (10) de la pompe volumétrique (8), le tube extérieur (6) et l'insert en caoutchouc (7) du tube de mélange (4) étant respectivement formés d'une seule pièce avec un tube extérieur (11) et un insert en caoutchouc (12) du tube d'alimentation (10).
  7. Dispositif selon la revendication 5, dans lequel le tube de mélange (4) du mélangeur secondaire (1) et un tube d'alimentation (10) de la pompe volumétrique (8) sont formés en tant que pièces séparées et reliés l'un à l'autre par l'intermédiaire de moyens de fixation, tels qu'une bride (15) ou une bride de serrage (18), la bride (15) présentant une collerette annulaire (19) faisant saillie radialement vers l'intérieur et étant disposée entre l'insert en caoutchouc (7) du tube de mélange (4) et un insert en caoutchouc (12) du tube d'alimentation (10) et reposant contre celui-ci de manière étanche.
  8. Dispositif selon la revendication 7, dans lequel le tube d'alimentation (10) et le tube de mélange (2) sont disposés coaxialement l'un par rapport à l'autre et les moyens de fixation sont serrés par complémentarité de force entre le tube d'alimentation (10) et le tube de mélange (2) par l'intermédiaire de moyens de serrage agissant axialement, en particulier de tirants (21).
  9. Dispositif selon l'une des revendications 6 à 8, dans lequel l'insert en caoutchouc (7) du tube de mélange (4) est relié par liaison de matière au tube extérieur (6) du tube de mélange (4) par vulcanisation et/ou l'insert en caoutchouc du tube d'alimentation (10) est relié par liaison de matière au tube d'alimentation (10) de la pompe volumétrique par vulcanisation.
  10. Dispositif selon l'une des revendications précédentes, comprenant un filetage de mélange ou une hélice de mélange, le filetage de mélange ou l'hélice de mélange présentant un pas constant ou variable.
EP19180301.4A 2018-06-15 2019-06-14 Dispositif de fabrication d'une matière coulante Active EP3581264B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19180301T PL3581264T3 (pl) 2018-06-15 2019-06-14 Urządzenie d o produkcji płynnej masy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202018103387.5U DE202018103387U1 (de) 2018-06-15 2018-06-15 Vorrichtung zur Herstellung einer fließfähigen Masse

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EP3581264A1 EP3581264A1 (fr) 2019-12-18
EP3581264B1 true EP3581264B1 (fr) 2021-06-02

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EP19180301.4A Active EP3581264B1 (fr) 2018-06-15 2019-06-14 Dispositif de fabrication d'une matière coulante

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EP (1) EP3581264B1 (fr)
DE (1) DE202018103387U1 (fr)
ES (1) ES2881199T3 (fr)
PL (1) PL3581264T3 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19754969A1 (de) 1997-12-11 1999-06-17 Pft Gmbh Vorrichtung zur kontinuierlichen Herstellung von Schaumbrei
DE502005005028D1 (de) 2005-05-13 2008-09-25 Knauf Pft Gmbh & Co Kg Verfahren und Vorrichtung zur Herstellung einer fliessfähigen Masse
DE102009047717A1 (de) * 2009-12-09 2011-06-16 Putzmeister Mörtelmaschinen GmbH Exzenterschneckenpumpe

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* Cited by examiner, † Cited by third party
Title
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Also Published As

Publication number Publication date
ES2881199T3 (es) 2021-11-29
PL3581264T3 (pl) 2021-12-13
DE202018103387U1 (de) 2019-06-18
EP3581264A1 (fr) 2019-12-18

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