EP2370198B1 - Bördelrührer - Google Patents

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Publication number
EP2370198B1
EP2370198B1 EP09799550.0A EP09799550A EP2370198B1 EP 2370198 B1 EP2370198 B1 EP 2370198B1 EP 09799550 A EP09799550 A EP 09799550A EP 2370198 B1 EP2370198 B1 EP 2370198B1
Authority
EP
European Patent Office
Prior art keywords
stirring
stirrer
flange
flat element
shaft
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
EP09799550.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2370198A1 (de
Inventor
Martin Hirzel
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PL09799550T priority Critical patent/PL2370198T3/pl
Publication of EP2370198A1 publication Critical patent/EP2370198A1/de
Application granted granted Critical
Publication of EP2370198B1 publication Critical patent/EP2370198B1/de
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
    • B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
    • B01F27/054—Deformable stirrers, e.g. deformed by a centrifugal force applied during operation
    • B01F27/0541—Deformable stirrers, e.g. deformed by a centrifugal force applied during operation with mechanical means to alter the position of the stirring elements
    • 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
    • B01F27/0721—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis parallel with respect to 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
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0726—Stirrers 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
    • 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
    • B01F27/1125—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis
    • B01F27/11251—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis having holes in the surface
    • 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
    • B01F27/117—Stirrers provided with conical-shaped elements, e.g. funnel-shaped

Definitions

  • the invention relates to an industrial stirrer according to the preamble of patent claim 1.
  • Industrial stirrers are used for stirring, mixing or blending substances or substances such as liquids, powdery substances or dough-like masses. In this case, different requirements are placed on the stirring method and the stirring result, wherein an essential criterion is the selection of the geometric shape of a stirring body. Under industrial stirrers is in the present case any type of production technology used stirrers to understand, be it for example stirrers from the food industry, paint industry or from the construction or environmental technology.
  • Another selection criterion for the embodiment of a stirrer is always the shape of the stirred tank.
  • stirrers which have a plurality of flat stirring bodies with a plurality of smaller passage openings.
  • SU 1542601 discloses an industrial stirrer according to the preamble of claim 1.
  • the invention has the object, an industrial stirrer in such a way that it can be used at low cost production for a variety of mixing tasks.
  • the invention is characterized by the features of claim 1.
  • the invention is based on an industrial stirrer with a drive shaft and at least one spoke, whose at least one stirrer body is designed in the stirring direction with a plane-like cross-sectional area.
  • the stirring body is moved through a medium to be stirred.
  • the stirring direction corresponds to this direction of movement, wherein in the case of a rotating stirrer under the stirring direction substantially at a time tangentially applied to a circular path direction to understand. Along the circular path, the stirring direction thus changes correspondingly to the circular movement of the rotating stirrer.
  • the stirring body can be adapted in its shape, in its dimensions and in its position with respect to a stirring shaft generating the stirring without significant restrictions of the respective stirring task.
  • the stirrer according to the invention has the feature that the plane-like cross-sectional area of the at least one agitating body is interrupted by a recess, ie it has a hole in the surface area.
  • stirred medium such as a highly viscous or jelly-like mass after stirring a mixing / mixing with a required homogeneity, especially in the beginning Having corner regions of square stirred containers.
  • the recess is arranged centrally in the plane of the stirring body. Via the centrally arranged recess, an increased symmetry of a flow profile formed during the stirring process is made possible, whereby an improved homogenization can be achieved.
  • a Centrally arranged recess further reduces the production costs of such a stirring body, as available standard parts of other industries often this symmetry is present, which are to be used for example as components for producing such a stirring body.
  • the at least one stirring body of the stirrer according to the invention is formed from a flat element and a flange.
  • the flat element forms an enlarged stirring cross-sectional area in the medium to be stirred in the stirring direction, the flange following the flat element producing a funnel effect and thus influencing the stirring flow profile.
  • the flare connects to the central recess.
  • the forming Rhackströmungsprofil is further improved in this way, so that, for example, toroidal rotational flow (similar to a Rauchkringels of cigarette smoke) can form around the stirring body.
  • the flange is formed in the direction of stirring in relation to the material thickness of the flat body the same length or longer. If the flange is formed the same length in relation to the thickness of the flat body, an optimized flow behavior of the medium is achieved, which achieves a good mixing of the medium to be stirred. If, for example, the crimp in the stirring direction is made longer in relation to the thickness of the flat body, it is possible to utilize the advantages of a tubular stirrer and its stirring behavior in, for example, a viscous medium.
  • the surface of the flat element to the surface of the recess in a ratio range of at least 0.5: 1 to (1: x)> 1 is formed.
  • Ratio sizes of 0.8 to 8 have been found to be useful combination of annular surface to inner diameter surface which can be realized with standard parts.
  • the stirring body forms a sufficient, planar-like cross-sectional area to produce the aforementioned advantages such as a homogeneous medium at low speed of the stirrer.
  • the task is given expanded to the effect that with increasing stirring speed a forming axial vortex must not pass through to the stirring body, otherwise air would be introduced into the material to be stirred. This may also be desirable in individual cases.
  • the flat element is designed as a round, oval or square body.
  • the design of the flat element with different surface shapes has the advantage that the plane-like cross-sectional area of the flat element can be adapted in each case to the stirring task or to the medium or container shape to be stirred.
  • the recess and the adjoining flare is round, oval or square. This has the advantage that depending on the stirring task, the cross-sectional area of the recess and the adjoining lateral surface of the flange can be formed differently.
  • an alternative attachment of the stirring body to the stirring shaft by, for example, an articulated connection has the advantage that the stirrer can be introduced into a container opening in the pivoted-in state, wherein the diameter of the opening can be smaller than the effective stirring diameter. Due to the centrifugal force, the pendulum arranged on the articulated joint stirring body during the stirring process to a larger effective radius.
  • the at least one stirring body is a welding bead, as he, for example, from the Catalog "Welding fittings made of stainless steel VA4" (2008-09-24), fittings Arnold GmbH , XP 002574996 is known.
  • This has the advantage that standard parts for the stirring bodies are to be used, for example, for the production of a stirrer according to the invention, which advantageously lowers the production costs of such a stirrer.
  • the effective stirring diameter of the stirrer can be adapted to the geometry of the respective stirring container by appropriate length adaptation of the spoke.
  • the essence of this aspect is that at least one, preferably three stirring bodies according to the invention are present.
  • Stirring vessel and its dimensions are adjusted. With regard to the number of stirring bodies, it is advisable to adjust symmetry considerations around the center of rotation in order to minimize occurring bearing loads on the drive shaft. In principle, however, slow-moving stirrers with a single stirring body are also conceivable.
  • the stirring body is rotatably formed on the shaft and / or pivotally mounted on the spoke.
  • FIG. 1 a stirrer 1 according to the invention, which arranged on spokes 2 stirring body 3, in the present case arranged radially symmetrically about a hub 4 at a distance of 120 °.
  • the stirrers are set slightly inclined relative to the vertical, which is achieved via a rotation along the axis of the spokes 2.
  • the hub 4 has in its center further on a shaft receiving 5a, which allows a threaded bore attachment of the stirrer 1 to a motor-driven shaft (not shown here).
  • the stirrer 1 is set in rotation via the shaft, in such a way that the stirring bodies 3 are moved along the stirring direction 5.
  • the stirring body 3 has, on the one hand, a flat element 6 with a central recess 7, which forms the direction of rotation-related front side. On the stirring direction-related rear side, the stirring body 3 has a flange 8, which adjoins the recess 7 in the present case.
  • the stirrer body 3 is thus moved in the stirring direction 5 with the flat element 6 first through the medium to be stirred, wherein the medium to be stirred on the surface of the flat element 6 on the one hand by the recess 7 and the adjoining flare 8, on the other hand also flows around the stirring body 3.
  • the stirring bodies 3 are welded to a round material by means of a weld seam 9, which in turn is inserted into a stirring body attachment 10 on the spoke 2.
  • the Stirrer attachment 10 comprises a grub screw with which in the present case the round material welded to the stirrer body 3 is tensioned.
  • the attached to the spoke 2 Rhakismefest Trent 10 serves as a kind of connection adapter 11, which allows a compound of the stirring body 3 via the spoke 2 with the hub 4 and thus with the driving shaft via the shaft receiving 5.
  • connection adapter 11 such as threads, are conceivable.
  • connection adapter 11 makes it possible for the stirring bodies 3 to be inclined slightly in their vertical orientation with respect to the drive shaft and thus to provide improved stirring behavior, in particular with respect to a downward pulling force, similar to a screw.
  • the spoke 2 is itself in the present case also secured by welds to the hub 4, whereby the stirrer 1 forms a unit of three Rlick emotionsn 3 with corresponding fastening devices and Ardsadaptern.
  • the stirring bodies can also be welded to the spokes in the region of the flare or on the surface next to the flare by means of the flanged form, in order to withstand the considerable shearing forces during the stirring.
  • Fig. 1 The present in Fig. 1
  • the exemplary embodiment shown represents only a prototype. It would be more expedient to design a stirrer in process engineering which, in particular in the area of the food industry, but also in a multiplicity of other applications, has an apparently one-piece construction. This would have to be chosen so that the multiplicity of openings and undercuts shown here would mean an almost impossible complexity with respect to the cleaning of the stirrer 1.
  • a corresponding angle of incidence of the Rcken stressesenkrechten against a drive shaft has the advantage that a certain tensile torque is exerted by the screw-like force down on the entire agitator 1, which in turn the rotational movement of the stirrer 1 is stabilized on the shaft, in particular against a rocking of vibration resonances ,
  • Fig. 2 shows a stirring body 3 in the form of a weld bead, which in turn corresponds to a standard part.
  • the rear view of the weld bead is shown, wherein the welding bead is formed from a flat element 6 and a subsequent bead 8.
  • the flange 8 has a flange wall thickness 21 which is chosen to be approximately equal to the surface element wall thickness 22.
  • the flare 8 is connected to the flat element 6 in a fluent continuous connection, so that no dirt deposits due to grooves or undercuts are to be feared even at these points.
  • the recess 7 in the middle of the stirring body 3 allows the passage of the medium to be stirred when moving in the stirring direction 5, which in the present case corresponds to a movement in the image plane.
  • Fig. 3 shows the front of a stirring body 3 in the form of a weld bead.
  • the flat element 6 is connected in the region of the recess 7 fluently to the flange 8, which also provides an improved cleaning property in the present case.
  • the surface 31 of the recess 7, which corresponds to the passage cross-sectional area through the recess 7, in this case has in relation to the surface of the Flat element 32 has an approximately by a factor of 5.5 reduced effective stirring cross section.
  • the medium to be stirred is thus moved by a larger by a factor of about 5.5 portion of the surface of the flat element 32 according to the stirring direction 5, wherein a smaller proportion passes through the surface of the recess 31. In this way, a flow profile is generated around the agitator 3, which achieves a corresponding required mixing due to the effect on its environment.
  • Fig. 4 shows a side view of a stirring body 3 in the form of a weld bead.
  • the stirring body 3 is hereby moved in the stirring direction 5, wherein schematically the flow pattern 41 in the form of drawn streamlines is shown in fragmentary form.
  • the flow pattern 41 shown here represents only a sketch of a possible flow scenario, since the flow behavior of fluids around solids is essentially influenced by the rate of movement of the solid on the one hand and by the fluid mechanical properties, for example the viscosity of the fluid medium. In this case, both laminar, rather unfavorable for a stirring flow conditions as well as turbulent or even chaotic flow patterns can arise.
  • the stirring body 3 has a thickness of the flat body 42a, which in the present case is somewhat smaller compared to the thickness of the flange 42.
  • the flare is connected at its flanging edge steadily passing over the flare 43 to the flat element 6, wherein the Forming the hemming radius 43 seen either from a surface portion of the flat element 6 or, as not shown here, also from the edge of the flat element 6, with the aid of an elongated and possibly not purely circular radius, may be formed.
  • a stirring body 3 is realized, which has almost no undercuts or depressions, which would represent, for example, for deposits in the form of impurities or difficulties in cleaning the device, for example in use in the food industry.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP09799550.0A 2008-12-30 2009-12-23 Bördelrührer Active EP2370198B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09799550T PL2370198T3 (pl) 2008-12-30 2009-12-23 Mieszadło z wywiniętymi kołnierzami

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008063393A DE102008063393B3 (de) 2008-12-30 2008-12-30 Bördelrührer
PCT/EP2009/009248 WO2010076000A1 (de) 2008-12-30 2009-12-23 Bördelrührer

Publications (2)

Publication Number Publication Date
EP2370198A1 EP2370198A1 (de) 2011-10-05
EP2370198B1 true EP2370198B1 (de) 2013-11-20

Family

ID=42027930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09799550.0A Active EP2370198B1 (de) 2008-12-30 2009-12-23 Bördelrührer

Country Status (6)

Country Link
US (1) US20110249529A1 (pl)
EP (1) EP2370198B1 (pl)
CN (1) CN102271794B (pl)
DE (1) DE102008063393B3 (pl)
PL (1) PL2370198T3 (pl)
WO (1) WO2010076000A1 (pl)

Families Citing this family (11)

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WO2015095260A1 (en) 2013-12-17 2015-06-25 Bayer Cropscience Lp Mixing systems, methods, and devices with extendible impellers
US8876369B1 (en) * 2014-03-24 2014-11-04 Compatible Components Corporation Apparatus for mixing liquids and/or solids with liquids
DE102015210904B4 (de) * 2015-03-11 2018-03-15 Protechna S.A. Rührstabanordnung sowie Transport- und Lagerbehälter für Flüssigkeiten mit einer Rührstabanordnung
GB2528775B (en) * 2015-06-19 2016-07-20 Merchant Courtenay Mixing device
DE102015011967A1 (de) * 2015-09-18 2017-03-23 Protechna S.A. Rührorgan, Rührstabanordnung sowie Transport- und Lagerbehälter für Flüssigkeiten mit einer Rührstabanordnung
CN106079883A (zh) * 2016-06-17 2016-11-09 胡俊 一种印刷油墨旋转搅拌机构
DE102016114735A1 (de) 2016-08-09 2018-02-15 Mut Tschamber Misch- Und Trenntechnik Gmbh Rührwerkzeug
RU182466U1 (ru) * 2017-06-06 2018-08-20 Юрий Владимирович Храмов Устройство для смешивания жидких сред
FR3068618B1 (fr) * 2017-07-10 2022-01-28 Fillon Technologies Dispositif d'agitation de fluide equipe d'un tel dispositif d'agitation
US11000814B1 (en) * 2018-11-19 2021-05-11 Donald Wynn, Sr. Mixing apparatus with shafts of different lengths having circular members
WO2021192802A1 (ja) * 2020-03-26 2021-09-30 富士フイルム株式会社 感放射線性樹脂組成物の製造方法、パターン形成方法

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EP0622112A1 (en) * 1993-04-30 1994-11-02 Kansai Chemical Engineering Co. Ltd An agitator blade
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Publication number Priority date Publication date Assignee Title
SU1542601A1 (ru) * 1987-09-18 1990-02-15 Предприятие П/Я Р-6956 Рамна мешалка
EP0622112A1 (en) * 1993-04-30 1994-11-02 Kansai Chemical Engineering Co. Ltd An agitator blade
US20080094938A1 (en) * 2006-10-24 2008-04-24 Better Way Tool Company L.L.C. Mixing lid having inner and outer paddles for mixing a liquid mixture in a container

Also Published As

Publication number Publication date
CN102271794B (zh) 2016-05-11
DE102008063393B3 (de) 2010-06-02
PL2370198T3 (pl) 2014-04-30
WO2010076000A1 (de) 2010-07-08
EP2370198A1 (de) 2011-10-05
CN102271794A (zh) 2011-12-07
US20110249529A1 (en) 2011-10-13

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