EP2937137B1 - Machine de mélange - Google Patents

Machine de mélange Download PDF

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Publication number
EP2937137B1
EP2937137B1 EP15163351.8A EP15163351A EP2937137B1 EP 2937137 B1 EP2937137 B1 EP 2937137B1 EP 15163351 A EP15163351 A EP 15163351A EP 2937137 B1 EP2937137 B1 EP 2937137B1
Authority
EP
European Patent Office
Prior art keywords
tool
mixing
machine according
clearing
mixing machine
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
EP15163351.8A
Other languages
German (de)
English (en)
Other versions
EP2937137A1 (fr
Inventor
Ulrich Tölle
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.)
Dr Herfeld GmbH and Co KG
Original Assignee
Dr Herfeld 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 Dr Herfeld GmbH and Co KG filed Critical Dr Herfeld GmbH and Co KG
Priority to PL15163351T priority Critical patent/PL2937137T3/pl
Publication of EP2937137A1 publication Critical patent/EP2937137A1/fr
Application granted granted Critical
Publication of EP2937137B1 publication Critical patent/EP2937137B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60Mixing solids with solids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80Mixing plants; Combinations of mixers
    • B01F33/85Mixing plants with mixing receptacles or mixing tools that can be indexed into different working positions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05Stirrers
    • B01F27/07Stirrers characterised by their mounting on the shaft
    • B01F27/072Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0723Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis oblique with respect to the rotating axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05Stirrers
    • B01F27/07Stirrers characterised by their mounting on the shaft
    • B01F27/072Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0726Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis having stirring elements connected to the stirrer shaft each by a single radial rod, other than open frameworks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05Stirrers
    • B01F27/11Stirrers characterised by the configuration of the stirrers
    • B01F27/19Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/192Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/35Mixing after turning the mixing vessel upside down
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80Mixing plants; Combinations of mixers
    • B01F33/805Mixing plants; Combinations of mixers for granular material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80Mixing plants; Combinations of mixers
    • B01F33/83Mixing plants specially adapted for mixing in combination with disintegrating operations
    • B01F33/833Devices with several tools rotating about different axis in the same receptacle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/40Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor
    • B01F35/42Clamping or holding arrangements for mounting receptacles on mixing devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/2805Mixing plastics, polymer material ingredients, monomers or oligomers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/30Mixing paints or paint ingredients, e.g. pigments, dyes, colours, lacquers or enamel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80Mixing plants; Combinations of mixers
    • B01F33/836Mixing plants; Combinations of mixers combining mixing with other treatments
    • B01F33/8361Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
    • B01F33/83613Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by grinding or milling

Definitions

  • the invention relates to a mixing machine, comprising a mixing head equipped with one or more elements for connecting the same to a container containing a mix for forming a mixture containing closed mixing container, which mixing head is pivotally mounted relative to a frame such that the mixing head and Container comprising mixing container for performing the mixing process is pivotable, and comprising a first carried by the mixing head, the bottom of the mixing head clearing, rotatably driven tool for generating a low-energy flow for supplying mixed material contained in the mixing container to at least one carried by the mixing head second, only a fraction of the mixed material contained in the mixing container each detecting tool with a Mischguteauiques in a transverse direction to the Mischgutiolo generated by the first tool, which at least one second tool is responsible for the actual mixing work and is located within the trajectory of the soil clearing first tool.
  • Such mixing machines are industrial mixers which are used for mixing, in particular, bulk material, typically powdered bulk material, such as is required for producing plastic granulate mixtures or else in the paint industry. These mixing machines have a comparison with a frame pivotally mounted mixing head, which also serves to seal a container containing the mix, which is connected to the mixing head for the purpose of mixing therein. After the container has been connected to the mixing head, a closed mixing container is formed from the mixing head and the container containing the mix. For the purpose of connecting the container to the mixing head, the mixing head has one or more connecting elements, for example a peripheral flange. Due to the fact that in these mixing machines a container containing the mix is connected to the mixing head, these mixers are also addressed as a container mixer.
  • the mixing head itself is pivotally mounted relative to the frame of the mixing machine, so that the mixing with respect to the mixing head in an overhead position, in which the mixing head at the bottom and the container connected thereto are located at the top.
  • Such known container mixers have a device for generating a Mischgutstroms.
  • Mischgutstromerzeugs adopted used in conventional mixers axially mounted in the mixing head tool, driven by a motor rotatorisch.
  • Such a tool has several projecting in the radial direction of the drive shaft wings, so that it is designed in the manner of a propeller.
  • Such a container mixer is off EP 0 225 495 A2 known. Further, it can be provided to arrange a plurality of such tools on the drive shaft. In the prior art mixers, this tool serves as a mixing tool and generates a Mischthrombus during operation of the mixer with the mix contained in the mixing container.
  • the mix By mixing or mixing the mix is thrown in an axial region upwards, deflected outward in the radial direction and then returned due to gravity on the inner wall of the container to the tools.
  • a Mischgutstrom is generated, in which the entire, located in the mixing vessel mix is included. Due to the acceleration of the mixed material on the one or more mixing tools and the turbulence contained in the Mischgutstrom the mixing process takes place.
  • the aim is to achieve the desired mixing in the shortest possible time. Even if with higher tool speeds basically a thorough mixing in a shorter time is possible, as with slower rotating tools is generally considered that in the material to be mixed not too much heat may be entered. Especially when mixing plastic granules is to pay attention to this, otherwise the individual granules particles baked together and / or can also cake on the tools. For this reason, in the mixing machines described above, the mixing time is limited in order to prevent the mixed material from being too much heated by the drive of the mixing tool or tools and the jacket friction of the particles on the inner wall of the container.
  • a container mixing machine which does not have the disadvantages indicated for the above-described mixing machines, is out EP 2 460 581 A1 known.
  • This previously known blender works on a different concept.
  • a slowly rotating bottom clearing first tool is used to deliver mix to a second tool carried by the mixhead.
  • the first tool hardly introduces energy into the mix.
  • the second tool is responsible for the actual mixing process.
  • the mixed material stream produced by the second tool runs in the transverse direction to the conveying mixture stream provided by the first mixing tool.
  • this mixing tool can work fast-rotating to a higher or high energy secondary Mischgutstrom - the actual for mixing of the mixed material produced Mischgutstrom - to produce. Since only a fraction of the mixed material is detected by the second tool and introduced into the secondary mixed material flow and the mixed material introduced therein remains therein only for a short time, the heat input into the mix is only slight. Finally, the mixed material particles which have been led out again from the secondary mixed material stream can cool down before they are again supplied by the first tool to the second tool for further mixing.
  • the soil clearing conveyor tool in this prior art mixing machine is designed in the manner of a helical segment, whose trajectory is passed in the radial direction on the outside of the second tool.
  • the helical segment is designed so that the mixed material cleared from the bottom of the mixing head is transported away from the bottom.
  • This previously known mixing machine has two helix segments diametrically opposite one another with respect to the axis of rotation.
  • the invention is therefore the object of developing a mixing machine of the type mentioned in such a way that the energy input relative to a EP 2 460 581 A1 become known mixing machine could be further reduced.
  • an aforementioned, generic mixing machine in which the at least one first tool is formed like a shovel and in the direction of rotation of the tool with its pointing in the direction of rotation edge in the radial direction outwards and in which the first tool a first lower-level blade section , an adjoining second wall clearing blade section and an opening facing away from the wall remote end, through which the second tool is passed during rotation of the first tool.
  • this mixing machine is different from the EP 2 460 581 A1 known mixing machine designed at least a first tool in the manner of a blade, which is employed with respect to the direction of rotation of the tool with its pointing in the direction of movement conclusion to the wall of the mixing head and thus in the direction of the axis of rotation.
  • the blade itself is divided into a first lower-level blade section and an adjoining wall-clearing blade section.
  • the blade has a tool recess through which the second tool is passed during a rotational movement of the first tool.
  • This tool recess is open to her due to the employment of the blade wall remoteness conclusion.
  • the lower-level blade section is employed for performing a ground-clearing function, with respect to the plane of the second blade section.
  • the scoop-like first conveying tool is preferably carried out in the manner of a paddle or rudder, wherein the falling mixture falls lee Liste.
  • the rotational speed of the first tool compared to the required rotational speed of EP 2 460 581 A1 can be reduced by up to 50% and more without having to extend the mixing time of a batch to achieve the same mixing result.
  • the lower rotational speed of the first tool not only reduces the heat input but also the energy consumption of the mixing machine.
  • the bottom closer, preferably bottom clearance designed blade section and the wall clearing blade section can be equipped with resilient wiper lips, which contact the floor or the mixing head inner wall so that wall or Bodenanbackept not or at most only very much are subordinate to observe. According to a simpler and faster cleaning of the interior of the mixing head after a batch change, if in a subsequent batch a different material to be mixed than in the previous batch.
  • the angle of attack of the first tool with respect to a radial is preferably between about 50 degrees and about 70 degrees. Particularly good results could be achieved with an angle of about 60 °.
  • This wall clearing blade section is made longer with respect to its direction of extension in the direction of movement than the adjoining to the bottom of the mixing vessel preferably bottom clearance blade section.
  • the wall clearing blade section may be designed in the manner of a plate. It is also possible to carry this out with a curvature directed in the direction of the axis of rotation or also a first area adjoining the wall-clearing edge in the manner of a plate and an adjoining area which is curved in the above-mentioned manner or projecting inwardly projecting in relation to this plane to provide.
  • a ground-clearing counter-tool is connected to the shaft of the first tool.
  • This counter-tool is employed with respect to a radial, and with such an angle that the mixture is detected by this tool moves away from the hub or the shaft.
  • the first tool and the counter tool are matched to one another, so that the mixed material captured by these is moved towards the second tool. Consequently, these tools are designed so that they can be passed with the closest possible distance to the second tool in the course of its rotational movement.
  • first tools two diametrically opposed first tools and two diametrically opposite counter tools are provided.
  • Each first tool is in a radial arrangement to a counter tool. These then form a forced supply channel for the particularly effective supply of mix to the responsible for the actual mixing process mixing tool - the second tool.
  • the second mixing tool will be a bladed equipped tool driven at higher or higher rotational speeds. In any case, the speed of this tool exceeds the rotational speed of the first tool by a multiple.
  • a mixing machine with such a mixing head can also be equipped with several second mixing tools, also designed differently. If it is desired to disperse the mixed material, a tool equipped with wing tools is used as the second tool - as the actual mixing tool. If a homogenization of the mix is provided, a second, designed in the manner of a screw conveyor mixing tool can also be used. When using in each case one of these mixing tools in a single mixing head can then be adjusted by appropriate individual control of these tools, the mixing result with respect to the variables "dispersion" and "homogenization".
  • a mixing machine 1 for industrial purposes has a frame 2, on which a mixing head 3 is pivotally mounted.
  • the pivot axis of the Mixing head 3 is denoted by the reference symbol S in FIG. 1 indicated.
  • the mixing head 3 is pivotable about its pivot axis S at least 180 °.
  • the pivotability of the mixing head 3 serves the purpose that in its opposite to the representation in FIG. 1 rotated 180 ° position a mixed goods container 5 as a mix containing container moved to the mixing head 3 and can be connected to this, then the unit formed from Mischgutcontainer 5 and mixing head 3 - the actual mixing container - in the FIG. 1 shown mixing position of the mixing head 3 to pivot. In this position, the mixing head 3 of the mixing machine 1 is at the bottom, so that the mix contained in the Mischgutcontainer 5 falls on the arranged in the mixing head 3 tools.
  • the mixing head 3 of the illustrated embodiment has two tools, which are each driven by an electric motor in the illustrated embodiments.
  • a first electric motor 6 serves to drive a first tool unit; a second electric motor 7 serves to drive a second tool.
  • the mixing head 3 has a container part 8 with a bottom 9 and a cylindrical wall section 10 formed thereon. The transition from the bottom 9 into the wall section 10 is executed to form a radius.
  • the container part 8 is enclosed in a housing 11.
  • the housing 11 carries at its free end a coupling flange 12 against which a complementary designed coupling piece of the mixed goods container 5 rests after connection to the mixing head 3.
  • the coupling flange 12 as an element for connecting a container containing a mix, here: the Mischgutcontainerers 5 to the mixing head.
  • the tool 13 is executed in its functionality in the manner of a blade and employed with respect to the direction indicated by the block arrows direction of rotation.
  • the employment of the located on the arm 15 tool 13 is starting from an arrangement of the tool 13, with this occupies an angle of 90 ° with the radial R formed by the conveying arm 15, with its pointing in the direction of rotation front edge in the radial direction to the outside directed towards the wall section 10. Due to this employment, this tool 13 is wall clearing. Consequently, during a rotary movement of the tool 13, this mixture will be conveyed from the wall section 10 in the direction of the shaft 14.
  • the blade-like tool 13 is subdivided into a ground-level first blade section 16 and an adjoining second blade section 17.
  • the first blade portion 16 is also employed with respect to the plane of the second blade portion 17, in the illustrated embodiment at about 25 ° with its facing edge 18 of this blade portion 16 in the direction of rotation. Because of this embodiment of the first blade section 16, this is ground-clearing in order to convey away mix material in the direction of the bottom 9 of the mixing head 3.
  • the angle of employment of this blade portion 16 relative to the radial, compared with the angle of attack of the second blade portion 17 is slightly larger, in the illustrated embodiment about 15 °.
  • the bottom-clearing blade section 16 adjoins a recess 19. The recess 19 is introduced into the tool 13 from its end 20 pointing counter to the direction of rotation.
  • the bottom closer first blade portion 16 is designed with respect to its height compared to the height of the second blade portion 17 is significantly lower.
  • a wiper lip 21 is arranged on the pointing in the direction of rotation front edge 21 of the wall clearing blade portion 17 in its substantially over the height of the wall portion 10 extending portion. This is made of an elastic material and extends from the edge 22 to the wall portion 10 zoom, so contacted them.
  • the wiper lip 21 acts with a certain bias against the surface of the wall portion 10 and serves for stripping of possibly adhering thereto Mischgutpellen.
  • only the tool 13 carries such a wiper lip 21. It is not necessary that both tools 13, 13.1 carry a wiper lip at this position.
  • the tool 13 is equipped with such a wiping lip 21, preferably when PE or PP material is mixed in the mixing head 3.
  • bottom-clearing blade portion 16 of the tool 13 is also driven by the shaft 14, a counter-tool 23.
  • the counter-tool 23 since connected to the shaft 14, rotatably driven in the same direction of rotation, as the tool 13.
  • the counter-tool 23 is likewise a ground-clearing tool which is set in the other direction with respect to the direction of rotation in the same way as the tool 13.
  • a wiper lip 24, which serves the same purpose, is connected to the counter-tool 23 Due to the arrangement of the tool 13 and the counter tool 23 is mixed material on the one hand by the wall portion 10 in the direction of the shaft 14 and the other by means of the counter tool 23 from the shaft 14 back to ground Direction to the wall portion 10 moves.
  • By the counter-tool 23 an accumulation of not involved in the mixing process mix in the shaft 14 is prevented. Since in the illustrated embodiment, two first tools 13, 13.1 are provided, two counter tools 23, 23.1 are also provided.
  • the electric motor 7 of the mixing head 3 is used to drive a second tool 25.
  • This also passes through the ground with its shaft. 9 the container part 8 and the in FIG. 2 undetectable bottom of the housing 11.
  • the shaft and thus the axis of rotation of the tool 25 is inclined to the axis of rotation of the shaft 14, as this is clearly visible in the figures.
  • the mixing tool 25 is a mixing tool known per se with a plurality of mixing blades sitting one above the other on the shaft.
  • the actual mixing work is carried out in an operation of the mixing machine 1 with this operated at high or higher rotational speed tool 25.
  • the first tools 13, 13.1 and the counter-tools 23, 23.1 cooperating therewith serve for feeding mixed material to the mixing tool 25 as well as for removing mixing material captured by the mixing tool 25.
  • the representations of the mixing head 3 in the Figures 2 and 3 show that the first tools 13, 13.1 have a greater extent in the direction of the longitudinal axis of the mixing head 3 than the wall portion 10 is high. Consequently, these tools 13, 13.1 protrude into a mixed goods container 5 connected thereto.
  • FIG. 4 shows in a plan view of the bottom 9 of the mixing head 3, the radial alignment of the arms 15, 15.1, starting from the shaft 14. Registered in this illustration is the radial formed by the arms 15, 15.1 in this embodiment R.
  • the tool 13 is connected to the End of the arm 15 connected.
  • the angle of attack is indicated therein by ⁇ therein.
  • FIG. 5 again shows a perspective insight into the mixing head 3.
  • the previously discussed counter tools are executed, as this has been explained in principle to the first tools 13, 13.1.
  • the counter tools in addition to the described soil clearing tool section via an adjoining second wall clearing tool section. Between the two tool sections as well as in the tools 13, 13.1 is a recess through which the second tool can be passed.
  • the wand Hurmdende tool section which has at least one of the counter tools is also employed in opposite directions to the first tool.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Food-Manufacturing Devices (AREA)

Claims (13)

  1. Machine de mélange comprenant une tête de mélange (3) équipée d'un ou de plusieurs éléments destinés à raccorder celle-ci à un conteneur (5) contenant un mélange, afin de former un conteneur-mélangeur fermé contenant le mélange, laquelle tête de mélange (3) étant logée de façon basculante par rapport à un châssis (2) de telle sorte que le conteneur-mélangeur constitué par la tête de mélange (3) et par le conteneur (5) est basculant afin de réaliser le processus de mélange, ainsi que comprenant un premier outil (13, 13.1) supporté par la tête de mélange (3), entraîné en rotation, dégageant le fond (9) de la tête de mélange (3), afin de générer un flux de transport à faible énergie destiné à acheminer le mélange contenu dans le conteneur-mélangeur vers au moins un second outil (25) supporté par la tête de mélange, qui n'agit que sur une fraction du mélange contenu dans le conteneur-mélangeur, avec un sens d'acheminement du mélange transversal par rapport au mouvement de mélange généré par le premier outil (13, 13.1), lequel au moins un second outil (25) est effectivement responsable du travail de mélange et se trouve dans la trajectoire du premier outil (13, 13.1) dégageant le fond, caractérisé en ce que l'au moins un premier outil (13, 13.1) est conformé en pale ainsi que, dans le sens de rotation de l'outil (13, 13.1), positionné vers l'extérieur, dans le sens radial, par son arête (22) orientée dans le sens de rotation et que le premier outil (13, 13.1) comporte un premier tronçon de pale (16, 16.1) plus proche du fond, et un second tronçon de pale (17) dégageant la paroi dans la continuité du précédent et qui présente un évidement (19) ouvert vers son extrémité éloignée de la paroi, à travers lequel passe le second outil (25) lors de la rotation du premier outil (13, 13.1).
  2. Machine de mélange selon la revendication 1, caractérisée en ce que l'angle de positionnement (α) du premier outil (13, 13.1) par rapport à la radiale (R) qui le traverse se situe entre 50°et 70°.
  3. Machine de mélange selon la revendication 2, caractérisée en ce que l'angle de positionnement (α) du premier outil (13, 13.1) par rapport à la radiale (R) qui le traverse est de 60°.
  4. Machine de mélange selon l'une des revendications 1 à 3, caractérisée en ce que l'angle de positionnement (α) est identique dans les deux tronçons de pale (16, 16.1, 17).
  5. Machine de mélange selon l'une des revendications 1 à 3, caractérisée en ce que l'angle de positionnement du premier tronçon de pale (16, 16.1) est plus petit que l'angle de positionnement du second tronçon de pale (17).
  6. Machine de mélange selon l'une des revendications 1 à 5, caractérisée en ce que le second tronçon de pale (17) présente une étendue radiale plus grande ainsi qu'une étendue plus grande dans le sens de rotation du premier outil (13, 13.1) que le premier tronçon de pale (16, 16.1).
  7. Machine de mélange selon l'une des revendications 1 à 6, caractérisée en ce que le premier tronçon de pale (16, 16.1) est, par rapport au plan du second tronçon de pale (17), positionné par sa face orientée dans le sens de rotation de l'outil (13, 13.1), dans le sens opposé au fond (9) de la tête de mélange (3).
  8. Machine de mélange selon la revendication 7, caractérisée en ce que cet angle de positionnement du premier tronçon de pale (16, 16.1) se situe entre 25° et 45° par rapport au plan du second tronçon de pale (17).
  9. Machine de mélange selon l'une des revendications 1 à 8, caractérisée en ce que l'arête du premier tronçon de pale (16.1), dégageant le fond, est équipée d'une lèvre racleuse (26) flexible, en contact avec le fond (9) de la tête de mélange (3).
  10. Machine de mélange selon l'une des revendications 1 à 9, caractérisée en ce que l'arête (22) du second tronçon de pale (17), dégageant la paroi, est équipée d'une lèvre racleuse (21) flexible, en contact avec la paroi (10) de la tête de mélange (3).
  11. Machine de mélange selon l'une des revendications 1 à 10 , caractérisée en ce que sont prévus au moins deux premiers outils (13, 13.1) espacés l'un de l'autre avec le même écart angulaire.
  12. Machine de mélange selon l'une des revendications 1 à 11, caractérisée en ce qu'il est prévu, agissant conjointement avec l'au moins un premier outil (13, 13.1), sur son arbre (14), un contre-outil (23, 23.1) dégageant le sol, entraîné en même temps que le premier outil (13, 13.1), lequel contre-outil (23, 23.1) est positionné dans le sens opposé à celui du premier outil (13, 13.1).
  13. Machine de mélange selon la revendication 12, caractérisée en ce que le contre-outil dispose, en plus du tronçon d'outil dégageant le fond, d'un tronçon d'outil dégageant les parois dans la continuité du précédent et qu'il est ainsi construit sur le principe du premier outil avec un angle de positionnement inverse.
EP15163351.8A 2014-04-15 2015-04-13 Machine de mélange Active EP2937137B1 (fr)

Priority Applications (1)

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PL15163351T PL2937137T3 (pl) 2014-04-15 2015-04-13 Maszyna do mieszania

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DE202014101787.9U DE202014101787U1 (de) 2014-04-15 2014-04-15 Mischmaschine

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EP2937137A1 EP2937137A1 (fr) 2015-10-28
EP2937137B1 true EP2937137B1 (fr) 2017-01-25

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US (1) US9968897B2 (fr)
EP (1) EP2937137B1 (fr)
DE (1) DE202014101787U1 (fr)
ES (1) ES2623330T3 (fr)
PL (1) PL2937137T3 (fr)
PT (1) PT2937137T (fr)

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Also Published As

Publication number Publication date
US20150290607A1 (en) 2015-10-15
ES2623330T3 (es) 2017-07-11
US9968897B2 (en) 2018-05-15
EP2937137A1 (fr) 2015-10-28
PL2937137T3 (pl) 2017-07-31
PT2937137T (pt) 2017-05-03
DE202014101787U1 (de) 2014-04-30

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