EP2364770B1 - Outil pour dispositif de mélange - Google Patents

Outil pour dispositif de mélange Download PDF

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Publication number
EP2364770B1
EP2364770B1 EP11001604.5A EP11001604A EP2364770B1 EP 2364770 B1 EP2364770 B1 EP 2364770B1 EP 11001604 A EP11001604 A EP 11001604A EP 2364770 B1 EP2364770 B1 EP 2364770B1
Authority
EP
European Patent Office
Prior art keywords
mixing
strut
tool according
tool
mixing blade
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
EP11001604.5A
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German (de)
English (en)
Other versions
EP2364770A1 (fr
Inventor
Guido Egler
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.)
TEKA Maschinenbau GmbH
Original Assignee
TEKA Maschinenbau GmbH
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 TEKA Maschinenbau GmbH filed Critical TEKA Maschinenbau GmbH
Priority to PL11001604T priority Critical patent/PL2364770T3/pl
Publication of EP2364770A1 publication Critical patent/EP2364770A1/fr
Application granted granted Critical
Publication of EP2364770B1 publication Critical patent/EP2364770B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0725—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis on the free end of the rotating axis
    • 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
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/071—Fixing of the stirrer to the shaft
    • 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
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
    • 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
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1123—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades sickle-shaped, i.e. curved in at least one direction

Definitions

  • the present invention relates to a tool for a mixing device, in particular for a mixing device for mixing solids.
  • Mixers for mixing solids, in particular for producing hydraulically bound substances, such as concrete or mortar, are known in a number of different designs.
  • the essential requirement of such mixers on the one hand is a sufficient mixing effect to ensure good homogeneity of the mixture and the best possible prevention of caking of the material to be mixed in the mixing tools used.
  • Homogeneity is an essential prerequisite for the production of specification-compliant products with constant product quality.
  • such mixers generally also employ stripping devices with which the caking or sticking of the material to be mixed on the bottom surface or the sidewalls of the mixer is to be prevented.
  • swirlers are used, with which the mixing effect is to be strengthened. These are generally arranged so that they have an effect where the Mischgutströmung has calmed down by the action of the actual mixing tool again so far that the Mischgutströmung runs substantially parallel, which does not have a good mixing at these points result.
  • mixing or whirling tools which have rectangular or square cross-sections.
  • Such tools have the disadvantage that they produce a flow shadow.
  • the material is possible for the material to be caked or glued from the mix. If such material at a later time dissolves again and falls back into the material to be mixed, this can lead to inhomogeneities in the composition of the final product and thus to specification not compliant products.
  • This problem is particularly serious when, in the meantime, a product change has taken place, i. in the mixer another product, for example, to be produced with a different color. Solvents from a previous product batch lead to color changes in the product that are not accepted by the customer. The human eye is very sensitive to even minor color changes.
  • Wirblerwerkmaschinee which have a body in the form of a pyramid or a truncated pyramid with polygonal base.
  • these tools have the shape of a downwardly open bell, so that the fastening elements, with which the swirler tools are attached to the support arm, can be arranged inside the body of the swirler tool. Due to the downwardly open shape, these fasteners are accessible for a change.
  • the whirling tools according to the DE 198 05 639 not fully satisfactory in terms of flexibility in changing the product and replacing the swirler tools. Since such tools are typical wearing parts of such mixers, which must be replaced regularly, the easy change is also an important criterion to avoid long and expensive downtime of the mixer.
  • a blade for rotary agitators for the purpose of mixing abrasive goods, in which the pressurized blade side is provided with a wear protection layer of a granular material. This layer must be applied to the surface of the main body of the blade. This should be possible for reasons of stability (the blades are subjected to considerable mechanical stress during the mixing process) without impairing the structure of the metallic base body. This requires a complex subsequent processing of the body.
  • JP 04235728A discloses an apparatus for efficient mixing of highly viscous liquids, wherein each one member serves to connect the stirrer blades to the shaft.
  • the stirrer blades themselves are embodied in an L-shaped rotated manner and have no recess in the region around or adjacent to the shaft on which the stirrer blades have a greater distance from the mixer bottom than in the region of the further spaced vertical stirrer portions of the stirrer blades.
  • US 4601583 A describes a mixer with separable wings.
  • the problem should be solved that it is technically very complicated to securely connect the wings with the shaft when they have been introduced separately from each other in the mixing device.
  • the disclosed solution should now be in a special coating of the components, which are firmly connected to one another in the event of heating to a certain temperature.
  • US 2008 013 04 06 A discloses a mixing device for mixing viscous liquids and building materials, wherein the blades can be welded to the shaft. In this case, the blades following the disclosed strut run straight and without forming an incline.
  • the object of the present invention is therefore to provide a tool for a mixing device which does not have the disadvantages described above or only to a reduced extent.
  • the tool according to the invention has a central shaft with a strut arranged at an angle of more than 80 and less than 100 ° to the axial direction of the shaft at the lower end of the shaft, which has at least one mixing blade or forms at least one mixing blade.
  • the so-called planetary mixers frequently used in the production of concrete or mortar or comparable materials typically have a drive with a motor and gear unit above the mixing trough.
  • the gearbox usually has a slow-moving part, often referred to as a rotor, and a faster rotating part integrated in the rotor, often referred to as a star.
  • this so-called star is moved by the rotor of the gearbox around the center of the mixer.
  • At the star of the gearbox is usually mounted a receptacle to attach mixing arms, at the end of which mixing blades are located, which run directly above the mixer bottom.
  • the geometric design of the mixing arms is carried out in many, sometimes complex, variations in order to achieve a good mixing effect.
  • the tools according to the invention have a simple central shaft which, as a rule, is oriented vertically downwards in the case of a drive arranged at the top, ie it dips vertically into the mix.
  • This simple wave replaces the usual, usually built on a turnstile mixing arms, which is structurally much easier and also makes a simpler design of the transmission itself to drive the shaft possible.
  • the corresponding adaptation to the bottom of the mixing device is achieved in part by replacing the mixing blades or by elaborately sealed designs in which the height adjustment is effected by moving parts which are in the region of the mixed material.
  • the tool according to the invention is structurally much simpler in structure and also easier to maintain, since it has neither moving parts in the region of the mix still fastening or adjusting devices are required that could come into contact with the mix and tend to pollution. Dirt leads to malfunctions, which in turn result in downtime, which is undesirable for economic reasons.
  • the drive device With the central shaft, the drive device is suitably connected in a force-transmitting manner, whereby the tool according to the invention is moved through the mix.
  • the structural design of the connection of shaft and drive device can be done in a conventional manner and those skilled in the relevant possibilities are known here. A detailed description in this context is therefore dispensable at this point.
  • a strut is arranged substantially at right angles thereto, which is correspondingly horizontal and quasi parallel to the bottom of the mixing device with vertical installation of the shaft in the mixing device.
  • a strut is arranged substantially at right angles thereto, which is correspondingly horizontal and quasi parallel to the bottom of the mixing device with vertical installation of the shaft in the mixing device.
  • deviations of the angle of the main axes of the shaft and strut of 90 ° are possible to a small extent (usually less than 10 °, preferably less than 5 °), as far as the geometric design of the mixer bottom permits.
  • the longitudinal axis of the strut is exactly at right angles to the longitudinal axis of the central shaft.
  • the desired good mixing usually requires an arrangement of mixing blades immediately above the bottom of the mixer, which requires a parallelism of the strut to the mixer bottom, if the strut at both ends has a mixing blade or forms a mixing blade.
  • This in turn requires a perpendicularity of the longitudinal axis of the strut to the longitudinal axis of the central shaft, if it is to be installed in the simple manner described above.
  • the central shaft and the strut disposed thereon are particularly advantageously designed in one piece, i. are made from a one-piece blank by appropriate design (e.g., by machining or the like).
  • This construction eliminates fastening devices for fastening the strut to the central shaft, which could reach the flow area of the mixed material during operation and may accordingly be prone to contamination. In such places, the unwanted caking and deposits mentioned in the introduction are particularly easy to form. In principle, however, it is also possible to attach the strut with corresponding hidden and not exposed to the influence of the mix fasteners on the shaft.
  • At least one of the shaft remove end of the strut at least one mixing blade is arranged or the strut itself forms such a mixing blade.
  • the mixing blade is designed without fastening devices located in the region of the mixed material. In principle, this can be achieved by attaching a mixing blade with a corresponding geometric configuration (see below) by gluing or welding to the strut. In contrast to screwing or the like arise during bonding or welding no lying in the range of the mixed material attack points by fastening devices that tend to caking or sticking of the mix.
  • the mixing blades are integrally formed with the strut, i. Strut and mixing blade made from a workpiece.
  • the risk of detachment of the mixing blade during the mixing process, where significant mechanical loads occur on the mixing blade, is thereby avoided.
  • the welding process will adversely affect the microstructure of the material, which may adversely affect strength and abrasion resistance.
  • At least one mixing blade of the tool according to the invention has a bend on the outer section relative to the central shaft. This bend is round, preferably designed approximately circular. This configuration of the mixing blade ensures that the mix is collected from the center of the mixer and can be distributed with momentum in the region of the outermost, reachable by the inventive tool radius of the mixing device over the entire mixer surface.
  • each having a mixing blade at each end of the strut the bend is advantageously designed so that the bending direction of the two mixing blades is in the opposite direction relative to the main vertical plane of the strut.
  • the mixing blade is outwardly convex or concave rising, particularly preferably designed approximately circular or circular, executed, i. the vertical height of the mixing blade at the outer end remote from the shaft is greater than at the part of the strut closest to the shaft at which the design of the mixing blade begins.
  • the pitch can basically be designed arbitrarily, but it is preferred if this is done without the formation of edges or comparable transitions, as these in turn could negatively affect the mixing effect.
  • the throwing and self-cleaning performance of the tool according to the invention is further improved.
  • At least one inner region of the strut has at least one lateral surface running obliquely to the vertical plane of the strut.
  • a particularly preferred embodiment of the tool according to the invention is characterized in that at least one, preferably all inner regions of the strut, which are occupied as above, have two lateral surfaces extending at different obliquely to the vertical plane of the strut.
  • the slope of a lateral surface directed downward to the vertical plane of the strut, while the slope of the second lateral surface can be directed upward to the vertical plane of the strut.
  • the lateral surfaces oriented obliquely to the vertical plane form a pyramidal structure.
  • a particularly preferred embodiment of the tool according to the invention is in Fig. 3 presented in a spatial perspective.
  • the strut is designed so that in an inner region between mixing blade and central shaft at the bottom, the bottom of the mixing device associated side of the strut creates a passage through which the mix during mixing in the center of the tool can dwell or under the strut through can flow slowly.
  • the self-cleaning performance of the tool according to the invention can be improved. This is achieved in that at least one inner region of the strut at its underside facing the mixing bottom compared to the area which is formed by the mixing blade (s), a greater distance from the mixer bottom than the mixing blade (s). Constructively, this can be achieved simply by a corresponding design of the strut with a vertical recess, preferably this return is bent again without forming edges, preferably circular in shape. In Fig. 1 this recession can be seen on the underside of the strut of the tool according to the invention.
  • FIG. 1 is to recognize the central shaft 1, on which the strut with inner portions 3 and 3 'of the strut and mixing blades 4 and 4' of the strut are arranged.
  • the mixing blades are constructed rising outwards, wherein the slope is designed in a round or circular shape.
  • the center of the imaginary circle, as determined by the bend, is the vertical extension of the line through the point of the inner region where the mixing blade begins to bend.
  • FIG. 1 is still the preferred embodiment of the mixer bottom facing bottom of the strut with a return to recognize.
  • the mixing blades strike the mixer bottom along, while in the inner region 3 or 3' of the strut, a passage of the type described is formed. Good to see is the design of the return without edges, in the example circular.
  • the reference numerals 5 and 5 ' designate inclined lateral surfaces of the inner region 3 or 3'.
  • FIG. 2 shows the tool according to the invention FIG. 1 in plan view from above, which is clearly seen that the two ends of the strut have a bend in the opposite direction to the vertical main plane of the strut. Schematically also to recognize the oblique lateral surfaces in the inner regions of the strut.
  • FIG. 3 Finally, a spatially perspective view of the tool according to the invention after FIG. 1 or 2.
  • the central shaft 1 has a cylindrical cross section and is integrally formed with the strut.
  • the section along the mixer bottom 2 of the strut can be seen as well as the slope and the bending of the mixing blade 4 and 4 '.
  • the oblique lateral surfaces 5 and% ' are also clearly visible in this illustration.
  • the tool according to the invention is suitable for installation in virtually all mixing devices, as they are customary for the production of concrete or mortar or comparable materials and described in various versions in the literature and are commercially available. Only, for example, its here the group of so-called plate mixers mentioned and among these in particular the so-called planetary mixer with an arranged above the mixing trough motor and gear unit as already mentioned in the above description. The structural design of such mixer is known in the art and therefore need not be described in detail at this point. The installation of the tool and the power transmitting connection with engine and transmission unit requires no further description here.
  • the tool according to the invention By the tool according to the invention, a good introduction of the mixing energy can be achieved in the mix and a good mixing quality can be achieved even with very different levels of the mixer. Due to the small storage surfaces and the high self-cleaning performance of the tool according to the invention, which is achieved in that not only a mixing effect in the horizontal direction during mixing, but also a material flow in the vertical direction is achieved, represent significant advantages in the practical application of the tool according to the invention Due to the flow of material in the vertical direction, which is achieved in particular by inclined lateral surfaces as described above, the mixture is overflowed by the mixture during the mixing process, which leads to corresponding material movement on the back of the tool and thus prevents caking and sticking to the back.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Claims (4)

  1. Outil pour un dispositif mélangeur destiné à mélanger des matières solides, avec un arbre central (1) et avec une traverse, qui est disposée à l'extrémité inférieure de l'arbre (1) sous un angle de plus de 80° et de moins de 100° par rapport à la direction axiale de l'arbre (1) et qui présente au moins une pale mélangeuse (4, 4') ou forme au moins une pale mélangeuse (4, 4'), sachant
    a) qu'au moins une pale mélangeuse (4, 4'), sur sa partie extérieure relativement à l'arbre central (1), présente une courbure et est réalisée à pente ascendante convexe ou concave en direction de l'extérieur,
    b) que l'outil, dans la région qui entre en contact avec le produit mélangé, ne présente pas de moyens de fixation ou de réglage,
    c) et qu'au moins une région intérieure de la traverse présente, sur le côté inférieur tourné vers le fond du mélangeur, par comparaison à la région qui est formée par la pale mélangeuse (4, 4'), une plus grande distance par rapport au fond du mélangeur que la pale mélangeuse.
  2. Outil selon la revendication 1, caractérisé en ce que la traverse et la pale mélangeuse (4, 4') sont réalisées d'un seul tenant.
  3. Outil selon au moins une des revendications 1 ou 2, caractérisé en ce que la traverse horizontale présente des pales mélangeuses (4, 4') à ses deux extrémités.
  4. Outil selon au moins une des revendications 1 à 3, caractérisé en ce qu'au moins une région intérieure (3, 3') de la traverse horizontale présente au moins une surface d'enveloppe (5, 5') s'étendant en oblique par rapport au plan vertical.
EP11001604.5A 2010-03-11 2011-02-28 Outil pour dispositif de mélange Active EP2364770B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11001604T PL2364770T3 (pl) 2010-03-11 2011-02-28 Narzędzie do urządzenia mieszającego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010011113A DE102010011113A1 (de) 2010-03-11 2010-03-11 Werkzeug für Mischvorrichtung

Publications (2)

Publication Number Publication Date
EP2364770A1 EP2364770A1 (fr) 2011-09-14
EP2364770B1 true EP2364770B1 (fr) 2016-10-05

Family

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Family Applications (1)

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EP11001604.5A Active EP2364770B1 (fr) 2010-03-11 2011-02-28 Outil pour dispositif de mélange

Country Status (6)

Country Link
EP (1) EP2364770B1 (fr)
DE (1) DE102010011113A1 (fr)
DK (1) DK2364770T3 (fr)
ES (1) ES2608674T3 (fr)
PL (1) PL2364770T3 (fr)
PT (1) PT2364770T (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014074078A1 (fr) * 2012-11-09 2014-05-15 Koca Insaat Sanayi Ve Ihracat Anonim Sirketi Mélangeur de matériau en poudre superfin comprenant de multiples ailes courbes
EP2926892B1 (fr) * 2014-04-04 2021-01-13 Milton Roy Europe Mobile d'agitation
DE102016114559A1 (de) * 2016-08-05 2018-02-08 Teka Maschinenbau Gmbh Anordnung von Mischschaufeln in einer Mischvorrichtung
DE102016114557A1 (de) * 2016-08-05 2018-02-08 Teka Maschinenbau Gmbh Mischtrog für eine Mischeinrichtung
DE102016115046A1 (de) 2016-08-12 2018-02-15 EKATO Rühr- und Mischtechnik GmbH Rührvorrichtung und Verfahren
CN108479580A (zh) * 2018-05-29 2018-09-04 湖州荣胜生物科技股份有限公司 一种大豆卵磷脂搅拌装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601583A (en) * 1985-01-28 1986-07-22 Kennecott Corporation Multi-hubbed separable blade agitators
US20080130406A1 (en) * 2006-12-01 2008-06-05 Aaron Charles Rosso Mixer for viscous materials

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DE910244C (de) * 1952-04-18 1954-04-29 Kabel Vogel & Schemmann Ag Mischmaschine, insbesondere fuer OElsand
US4190369A (en) * 1976-10-13 1980-02-26 National Engineering Company Method and apparatus for making molds
US4264215A (en) * 1979-09-17 1981-04-28 Sybron Corporation Separable blade impeller
JPS5867328A (ja) * 1981-10-17 1983-04-21 Tanezo Yamazaki 練和方法及びその練和装置
EP0079396A1 (fr) * 1981-11-12 1983-05-25 Hans Kimmel Hélices pour mélangeur et agitateur rotatif
JPH04235728A (ja) * 1991-01-11 1992-08-24 Satake Kagaku Kikai Kogyo Kk 高粘度液体用攪拌翼
DE19640770A1 (de) 1996-10-02 1998-04-16 Mitec Middeldorf Gmbh & Co Kg Schaufel für rotierende Rührwerke
DE19805639A1 (de) 1998-02-12 1999-08-19 Verschleis Technik Dr Ing Hans Wirblerwerkzeug sowie Wirbler mit einem derartigen Wirblerwerkzeug
US6652137B1 (en) * 2000-03-16 2003-11-25 Charles Ross & Son Company Stirrer for a planetary mixer and a planetary mixer incorporating the stirrer
AU2002953589A0 (en) * 2002-12-18 2003-01-16 Stuart Harvey S wand
DE202006014313U1 (de) * 2006-03-03 2007-02-01 Collomix Rühr- und Mischgeräte GmbH Mischvorrichtung sowie Mischwerkzeug
JP2011088827A (ja) * 2008-02-08 2011-05-06 Kanagawa Acad Of Sci & Technol 多糖類の加水分解方法及びそのための撹拌装置
CN101502769B (zh) * 2009-03-23 2011-04-20 沈如华 适用于调漆搅拌架中的分离式锥齿轮传动装置
DE202010003490U1 (de) * 2010-03-11 2010-06-10 Teka Maschinenbau Gmbh Werkzeug für Mischvorrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601583A (en) * 1985-01-28 1986-07-22 Kennecott Corporation Multi-hubbed separable blade agitators
US20080130406A1 (en) * 2006-12-01 2008-06-05 Aaron Charles Rosso Mixer for viscous materials

Also Published As

Publication number Publication date
ES2608674T3 (es) 2017-04-12
DE102010011113A1 (de) 2011-09-15
PL2364770T3 (pl) 2017-04-28
EP2364770A1 (fr) 2011-09-14
DK2364770T3 (en) 2017-01-23
PT2364770T (pt) 2017-01-02

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