• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A mixing device (1) for mixing inorganic and / or organic bulk materials and pasty masses has a mixing chamber (4), a rotatable external mixing and conveying tool (5) with shear and conveying elements (10, 11, 12), a rotatable internal mixing and conveying tool (2) with shearing and conveying elements (13, 14, 15), wherein the mixing chamber (4) has a compression zone (18) adjoining a mixing zone (19, 20) in the conveying direction and a compression zone (18). has subsequent discharge zone (23). Furthermore, a method for mixing a bulk material or a pasty mass to an extrudable material is described.
    公开号:AT511564A1
    申请号:T1472/2011
    申请日:2011-10-11
    公开日:2012-12-15
    发明作者:
    申请人:Zeppelin Reimelt Gmbh；
    IPC主号:
    专利说明:

    Zeppelin Reimelt GmbH N0011292 / I-Pw PATENT OFFICER · · · · · * * '♦ · DIPL. ING. F ETJERiiJZE:: **:; 1UÖÖ WIEN, AMERLINGSTRASSE 8 c: iVVALLAGASSE 4
    Zeppelin Reimelt GmbH
    Messenhäuser Str. 37-45 63322 Rödermark 28731 DE 26/30 October 22, 2010
    Mixing device and method for mixing a bulk material or a pasty mass
    The present invention relates to a mixing device of inorganic and / or organic bulk materials or pasty materials according to the preamble of claim 1, and a method for mixing a bulk material o-5 of a pasty mass to an extrudable material.
    It is known from the prior art, in the production of products made of thermoplastic polymers, to apply these additives to adjust certain product properties as a rule. For example, in polyvinyl chloride (PVC) processing, almost exclusively batch mixing systems are used, with which via a heating / cooling arrangement a general "Dry Blend". known mixture is prepared. As dry blend, a dry mix, for example, a mixture of a plastic powder with additives, liquids such. Weichma-15 rather or other alternatives called. The term is common especially in the processing of PVC. The preparation of such a so-called dry mixture is usually carried out in a warm state at temperatures between 110 and 120 * 0. In this case, for example, the plasticizer is completely absorbed by the PVC, so that after the re-cooling of the dry mixture a free-flowing mixture is formed.
    Zeppelin Reimelt GmbH ψ * • * N0011292 / I-Pw • ·
    • ··· t *
    The preparation of the dry mixtures required for extrusion processes takes place almost exclusively in batches and requires a great deal of energy, time and machine technology. 5 Attempts to directly add those with additives such as plasticizers in the extrusion process, have proved to be impractical, since for the absorption by the polymer and their homogenization a significant residence time in the extruder is required, 10 By replacing the above-described conventional mixing process by an inline Process could save much space, energy and processing time. Thus, from CH 421 908 a mixing apparatus for mixing, reaction and solution processes is known, which is used essentially inline, that is without intermediate storage of the finished mixed product. 15
    The problem here is that in this apparatus due to the high viscosity of Voremuision the too low flow capacity of this apparatus can lead to product backpressures or local overheating of the emulsion. This problem increases with increasing temperature, as the substances to be mixed increase in tack as the temperature increases. A stable operation of such a mixing apparatus is thus not guaranteed.
    From DE 2730283C3 a horizontal mixing device for the continuous preparation of powder and granular thermoplastic art-25 materials is known, which has a horizontal, tubular rotatably mounted container, on the inner surface of mixing tools are attached. Through the container extends to the container axis coaxially arranged, continuously driven in the same direction or in opposite directions shaft on which also mixing tools from sections of single or multi-flight worm helix are pre-30 hands. With this mixing device it is achieved that a good mixing and dispersing effect is created by the opposite movement of the rotating mixing tools. This mixing device is suitable for well-trickling substances which reach their so-called dry point during this mixing process and thus do not stick at the final temperature reached or form uncontrolled agglomerates of the product discharge, since the ready-mixed material free-falling or trickling into an extrusion machine to be led. The latter is not guaranteed under all circumstances. For example, glued from a certain product temperature or from a certain content of plasticizer or filler in the PVC
    Zeppelin Reimelt GmbH N0011292 / I-Pw
    Material increasingly, so that a constant discharge of the finished mixed material from the apparatus, to the clogging of the mixing device is not possible. 5 Since in practice both the use of high contents of poorly flowing bridging substances and liquids and high temperatures are common practice, this system is very limited in its range of applications. 10 The high temperatures created during friction are usually not only needed to ensure a homogeneous PVC mixture with additives and liquids, but also to reduce energy consumption during the subsequent reflow process. It is an object of the present invention to provide a mixing apparatus and a method for mixing a bulk material or a pasty mass into an extrudable material that enables a continuous, continuous operation with low energy costs and a low processing time. 20
    This object is achieved by a mixing device having the features of claim 1 and by a method having the features of claim 15. The mixing device according to the invention comprises a mixing container with a mixing chamber, a rotatable external mixing and conveying tool with shear and conveying elements and a rotatable internal mixing and conveying tool with shear and conveying elements, wherein the mixing chamber adjoining a mixing zone in the conveying direction compression zone and a has 30 subsequent to the compression zone discharge zone.
    With the mixing device according to the invention, a stable, constant production operation is made possible by which in a process drastic savings in space, energy consumption and processing time are possible. The investment costs for machines, plants and buildings can also be significantly reduced. Furthermore, material handling is simplified and segregation, as can occur in the Baich mixing process, is avoided here. The personnel expenses for operating such a mixing
    Zeppelin Reimelt GmbH N0011292 / I-Pw
    direction and to operate the method according to the invention requires less staff than the batch driving style.
    Advantageous embodiments of the invention are the subject of Unteransprü-5 che.
    According to a preferred embodiment variant, the mixing and conveying tools are designed as two equal and in opposite directions operable mixing and conveying tools. 10
    Due to the adjustable directions of rotation always constant production operations can be guaranteed, even for substances which are poorly flowing,
    Forming bridges or sticky. According to a further embodiment variant, the exit zone is designed as a stuffing unit, by which a radial movement of the mixed material is reduced and the mixed material is conveyed into the extruder by an axial movement.
    According to a further preferred embodiment of the mixing device, the shearing elements of the external mixing and conveying tool are aligned at an angle to the shearing elements of the internal mixing and conveying tool. In a particularly preferred embodiment, these shear angles of the interacting shear elements are adjustable. In addition, according to a further embodiment of the mixing device, the external mixing and 25 conveying tool and / or the internal mixing and conveying tool formed axially displaceable in order to change the gap width between the shear elements can to influence the dispersion and thus an occurrence of local temperature peaks in the Effectively avoid mixing. 30
    In the inventive method for mixing a bulk material or a pasty mass to an extrudable material, the bulk material to be mixed or pasty mass is first drawn into the mixing zone of the mixing device described above, that mix is then homogenized, then dispersed or gelled and before passing into the extruder, first compressed and then stuffed, all the process steps are carried out continuously in a temperature cycle. By the method according to the invention it is now possible to extrude a material by mixing a bulk material or a pasty N0011292 / I-Pw
    Zeppelin Reimelt GmbH
    Mass to produce without the energy, time and machine technically complex process steps of a batch process, as described above, have to take on. 5 Embodiments of the invention will be explained in more detail with reference to the accompanying drawings. Show it;
    FIG. 1 shows a side sectional view of a variant embodiment of a mixing device 10 according to the invention
    2 shows a Schn / ttansicht by the mixing device of Figure 1 along the line A-A, 15th
    FIG. 3 shows a sectional view through the mixing device from FIG. 1 along a line B-B,
    FIG. 4 shows a sectional view through the mixing device of FIG. 1 along a line C - C, FIG. 5 shows an enlarged detail of a section of the mixing device from FIG. 1 denoted by D,
    FIG. 6 shows a side sectional view of a vertical embodiment of a mixing device according to the invention and FIG
    Figure 7 is a sectional view of another embodiment of a horizontally designed mixing device according to the invention. In the following description of the figures, terms such as above, below, left, right, front, back, etc. refer exclusively to the exemplary representation and position of the mixing device and other parts selected in the respective figures. These terms are not intended to be limiting, that is to say, by different working positions or the mirror-symmetrical design or the like, these references may change. 35
    In FIG. 1, reference numeral 1 denotes a first embodiment of a mixing device according to the invention for mixing inorganic and / or organic bulk materials and pasty masses. The mixing device 1 consists essentially of a housing 7 in a housing 7
    Zeppelin Reimelt GmbH N0011292 / I-Pw
    brought mixing chamber 4 for receiving the mixed material to be mixed, at one end of an insertion nozzle 6 is arranged for the continuous filling of the mixing material to be mixed. At the end face at the other end of the mixing chamber 4 there is an outlet opening from which the ready-mixed extrudable material is conveyed out into an extruder 16 attached to the mixing device.
    Centrally in the mixing chamber 4, a rotatable internal mixing and conveying tool 2 with conveying and shearing elements 13, 14, 15 is arranged in the form of an inner shaft 10 which extends through the entire mixing chamber 4 through into the extruder 16 connected to the mixing device. This inner shaft is preferably designed as a hollow shaft with outlet openings, wherein a liquid feed into the mixing chamber is made possible by the Ausirittöffnungen. Furthermore, in the mixing chamber 4, a rotatable outer mixing and conveying tool 5 with conveying and shearing elements 10, 11, 12 inserted, that the internal mixing and conveying tool 2 concentrically surrounds and is formed substantially as a hollow cylinder or cage on the inner walls of the conveyor and shear elements 10, 11, 12 are attached. 20 The mixing chamber 4 is divided into several Verfahranszonen. Thus, located below the filler neck 6, a mixing zone 19,20, which is preferably divided into a premixing zone 20 with integrated material feed and a subsequent in the conveying direction intensive mixing zone 19. As shown in the detailed illustration in Figure 2, which takes place in the premixing zone 20 dende material feed is achieved by a screw conveyor 13 on the inner shaft of the internal mixing and conveying tool 2 and by a screw conveyor 10 on the inner wall of the external mixing and conveying tool 5. Preferably, by adjusting the rotational speed of the internal mixing and conveying tool 2 and / or the external mixing and conveying tool 5, a desired bandwidth in the material throughput can be set. In this case, the screw 13 of the internal mixing and conveying tool 2 is moved by a higher rotational speed relative to the conveyor screw 13 of the external mixing and conveying tool 5, the infeed of the material is conveyed inwards and, due to the configuration of the geometry of the screw conveyors 10, 13, transported in conveying direction 35 into the intensive mixing zone 19.
    For introducing the material to be mixed from the filler neck 6 into the mixing chamber 4 and into the interior of the external mixing and conveying tool 5, the filler neck 6 is preferably inserted into an opening in the housing.
    Zeppelin Reimelt GmbH N0011292 / I-Pw
    se 7 of the mixing device 1 integrated; the outer wall of the outer mixing and conveying tool 5 is preferably provided with filling slots 8 in the region of the filler neck 6, so that the material to be mixed can pass through the filling slots 8 into the mixing chamber 4. 5 in the intensive mixing zone 19, as also shown in the detailed view shown in Figure 3, on the inner wall of the external mixing and conveying tool 5 preferably arranged as dispersing shearing elements 11 are arranged and on the lateral surface of the internal mixing and conveying tool 10 2 are preferred as Fluidisierflügel trained shear elements 14 angeord net. Both the fluidising blades and the dispersing blades are self-cleaning and highly dispersing by a flow-favored form.
    To influence the dispersion, the shearing elements 11 of the external mixing and conveying tool 5 are aligned at an angle to the shearing elements 14 of the internal mixing and conveying tool 2, as shown by way of example in detail in FIG. Preferably, this shear angle β is between 1.5 ° and 3012, in particular between 1.5 ° and 1512. Here, according to a variant of the mixing device 1, the shearing elements 20, 11, 14 are mounted at a predetermined angle β, but it is preferred that
    Mixing device 1 in such a way that the shear angle ß of the cooperating shear elements 11,14 are adjustable.
    Another important parameter for influencing the dispersion is the shear gap between the fluidising blades and the dispersing blades. This can either be set to a predetermined level or according to a preferred embodiment of the mixing device 1 by an axial displacement of the external mixing and conveying tool 5 and or the internal mixing and conveying tool 2 to be changed. In particular, the abovementioned adjustment possibilities ensure constant production operation and prevent the occurrence of undesired local temperature peaks in the mixed material.
    In the conveying direction of the mixing device 1, a compression zone 18 adjoins the intensive mixing zone 19, in which the mixed material loosened up in the intensive mixing zone 19 is compressed. A cross-section in a detailed view of this area is shown in FIG. 4. For this purpose, the outer mixing and conveying tool 5 and the inner wall 21 of the mixing chamber 4 are shaped so that the discharge zone 23 # 9 adjoining the compression zone 18 in a cone shape
    Zeppelin Reimelt GmbH # 9 N0011292 / 1-Pw »* δ- is designed to be tapered. Due to the conical constriction condenses at a constant volume flow of mixed in the mixing zone 19, 20 material to a homogeneous eligible bulk or pasty mass, such as a dry Biends, with a segregation effectively prevented by the uniform promotion of the entire volume becomes. On the inner wall of the external mixing and conveying tool 5 as well as on the jacket of the internal mixing and conveying tool 2 in each case screw conveyors 12, 15 are arranged, the radial extent of the conical configuration of the compression zone 18 is adjusted accordingly. The direction of rotation of the internal mixing and conveying tool 2 and the external mixing and conveying tool 5 is preferably in the same direction in the compression zone 18, but in one embodiment can also be adjusted in opposite directions in order to be able to eliminate any material clogging in the taper. The subsequent to the compression zone in the conveying direction discharge zone 23 is preferably designed as Stopfwerk. This assembly continuously conveys the ready-mixed material into the extruder 16 connected to the stuffer plant via a connection head 22. The ready-mixed extrudable material is compacted in the discharge zone 23 and through the extension 20 of the internal mixing and conveying tool 2 with the auger mounted on its outer jacket 15, a radial movement of the mixed material is reduced and an axial movement towards the extruder 16 is promoted. The discharge zone 23 is designed in such a way that the mix is dischargeable in the conveying direction along the longitudinal axis of the mixing device. The connecting head 22 represents the cutting surface to the extruder 16, the mounting situation at the extruder 16 being adapted to the respective type of extruder. FIGS. 6 and 7 show further embodiment variants of a mixing device 1 according to the invention, wherein the embodiment shown in FIG. 6 shows a vertically positioned mixing device 1 and FIG. 7 shows a further embodiment of a horizontally positioned mixing device.
    The vertically displayed mixing device shown in FIG. 6 essentially corresponds to the above-described horizontally stacked mixing device 1. Differences between the two variants are necessary only as a result of the vertical and horizontal position. For example, the filler neck 6 is not integrated here in the housing 7 of the mixing device 1, but provided on a front side of the mixing chamber 4, in which also the internal mixing and conveying tool 2 is embedded. Also the bearings
    Zeppelin Reimelt GmbH N0011292 / I-Pw -3- «·« * 4 4 t and the seals of the rotating parts are adapted to the alignment of the device. «
    The embodiment variant of the mixing device 1 -5 shown in FIG. 7 differs essentially from the embodiment variant of the mixing device 1 shown in FIG. 1 by the shape of the outer mixing and conveying tool 5 and the arrangement of the rotary bearings 9, with which the outer mixing and conveying tool 5 is driven. 10 It is also contemplated that the mixing container 4 can be at least partially open to erfeichtern a cleaning of the mixing device 1, in particular when changing the mixing material to be mixed.
    With the mixing device 1 described above, it is possible to carry out a method 15 for mixing the bulk material or a pasty mass into an extrudable material with the following method steps:
    In this case, first the bulk material to be mixed or the pasty mass is drawn into the mixing chamber 4. Subsequently, the mixture is homogenized, especially in the premixing zone 20, then dispersed or gelled in the intensive mixing zone 19 and then compressed in the compression zone 19. In the discharge zone 23 is then the stuffing of the mixed material in the connected extruder 16. All process steps are carried out continuously in a single temperature cycle. Intermediate cooling and subsequent reheating of the mix, as is necessary in the batch process, is not necessary here.
    Constant production operation is ensured with the mixing device and mixing method presented, even for substances that are poorly flowing, bridging or sticky, and this applies both to operation at room temperature and to operation at elevated temperatures of up to 200G.
    The mixing device serves in particular for the continuous conveying, mixing and metering of PVC Dry Blend directly into an extruder for final processing. It can be installed both vertically and horizontally and works basically with two counter-rotating mixing tools in normal operation. The two pivot bearings 9 can thereby be driven by frequency control with different speeds and directions of rotation, so
    Zeppelin Reimelt GmbH N0011292 / I-Pw
    that the mixing device is movable stage-free and can be operated both in the same direction and in opposite directions. FOR D, ANMflLDtk, .. 1 1. 0KU2Q11 PATENT REMOVAL
    DIPL. INFECT ITZE
    Zeppelin Reimelt GmbH N0011292 / I-Pw - u-:
    Components 1 Mixing device 2 Internal shaft / internal mixing and conveying element 5 3 Pivots 4 Mixing bowl 5 External mixing and conveying element 6 Filler neck 7 Housing 10 8 Filling slot 9 Rotary bearing 10 Conveyor screw 11 Dispersing blade 12 Conveyor screw 15 13 Conveyor screw 14 Fluidizing blade 15 Conveyor screw 16 Extruder 17 Conical end piece 20 18 Compression zone 19 mixing zone 20 material intake 21 conical outer wall 22 connection head 25 23 discharge zone, stuffing unit
    权利要求:
    Claims (16)
    [1]
    PATENT OFFICER DiPL. ING. PETER ITZE N0011292 / 1-Pw Zeppelin Reimelt GmbH 1υόϋ WIEN, AWERUNQSTRASSE 8 c; Claims 1. A mixing device (1) for mixing inorganic and / or organic bulk materials and pasty masses, comprising 5 - a mixing chamber (4), - a rotatable external mixing and conveying tool (5 ) with shear and conveying elements (10,11,12), - a rotatable internal mixing and conveying tool (2) with shear and conveying elements (13.14,15), 10, characterized in that - the mixing chamber (4) a to a Having mixing zone (19, 20) in the conveying direction subsequent compression zone (18) and a to the compression zone (18) subsequent discharge zone (23).
    [2]
    2. Mixing device (1) according to claim 1, characterized in that the mixing and conveying tools (2, 5) as two equal and in opposite directions operable mixing and conveying tools (2, 5) are formed.
    [3]
    3. mixing device (1) according to claim 1 or 2, characterized in that 20 the mixing zone (19, 20) has a material feed zone (20) and one of the compression zone (18) adjacent intensive mixing zone (19).
    [4]
    4. mixing device (1) according to claim 3, characterized in that the shear and conveying elements (10, 11, 12, 13, 14, 15) in the material feed zone 25 (20) as screw conveyors (10, 13), in the intensive mixing zone (19) are designed as dispersing blades (11) and fluidizing blades (14) and in the compression zone (18) and the discharge zone (23) as conveying screws (12, 15),
    [5]
    5. Mixing device (1) according to any one of the preceding claims, characterized ge-30 indicates that the discharge zone (23) is designed such that the mix in the conveying direction along the longitudinal axis of the mixing device can be discharged.
    [6]
    6. Mixing device (1) according to any one of the preceding claims, characterized ge-35 indicates that the discharge zone (23) is designed as Stopfwerk, -13-: P Zeppelin Reimelt GmbH N0011292 / 1-Pw
    [7]
    7. mixing device (1) according to any one of the preceding claims, characterized in that the mixing zone (19, 20) has a material feed zone (20) and one of the compression zone (18) adjacent intensive mixing zone (19).
    [8]
    8. Mixing device (1) according to any one of the preceding claims, characterized in that the compression zone (18) formed in the region of the mixing chamber (4) is conically shaped tapering to the discharge zone (23).
    [9]
    9. mixing device (1) according to any one of the preceding claims, characterized in that it can be set up so that the mixing chamber (4) with respect to its longitudinal axis can be set up horizontally or vertically.
    [10]
    10. Mixing device (1) according to any one of the preceding claims, characterized ge-15 indicates that the shearing elements (11) of the external mixing and conveying tool (5) are aligned at an angle to the shear elements (14) of the internal mixing and conveying tool (2).
    [11]
    11. Mixing device (1) according to claim 7, characterized in that the 20 shearing elements (11) of the external mixing and conveying tool (5) in a shear angle range ß of 1.5 to 30 degrees to the shearing elements (14) of the internal mixing and conveying tool (2) are aligned,
    [12]
    12. Mixing device (1) according to any one of the preceding claims, characterized ge-25 indicates that the shear angle ß of the cooperating shear elements (11,14) are adjustable.
    [13]
    13. Mixing device (1) according to any one of the preceding claims, characterized in that the rotational speed of the external mixing and conveying tool (5) 30 and / or the internal mixing and conveying tool (2) are adjustable.
    [14]
    14. Mixing device (1) according to one of the preceding claims, characterized in that the external mixing and Förderwerkzfeug (5) and / or the internal mixing and conveying tool (2) are formed axially displaceable. 35
    [15]
    15. Mixing device (1) according to one of the preceding claims, characterized in that the mixing container (4) is at least partially openable. 9 Zeppelin Reimelt GmbH • * -1 * - * · ♦ * i * * »« tl • · * «· *» · · * * · N0011292 / I-Pw
    [16]
    16. A method for mixing a bulk material or a pasty mass to an extrudable material with a mixing device (1) according to any one of the preceding claims, comprising the process steps: 5 - drawing the material to be mixed or the pasty mass, - homogenizing the mix, - dispersing / Gelling of the mix, - Compressing the mix, - Stuffing of the mix, 10 whereby all process steps are carried out continuously in a temperature cycle. for d. anmslder (in): 1 l 0K // 2G11 patent / äwalt DIPL. ING / KIT itzp
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    引用文献:
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    AT156009B|1936-06-09|1939-04-25|Wilhelm Dr Ing Ludowici|Extrusion press for processing plastic masses, such as clay or the like.|
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    法律状态:
    2021-06-15| MM01| Lapse because of not paying annual fees|Effective date: 20201011 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102010060130.6A|DE102010060130B4|2010-10-22|2010-10-22|Mixing device and method for mixing a bulk material or a pasty mass|
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