EP3887030A1 - Rotor für eine vorrichtung zum mischen von pulver und flüssigkeit und vorrichtung zum mischen von pulver und flüssigkeit - Google Patents
Rotor für eine vorrichtung zum mischen von pulver und flüssigkeit und vorrichtung zum mischen von pulver und flüssigkeitInfo
- Publication number
- EP3887030A1 EP3887030A1 EP20700885.5A EP20700885A EP3887030A1 EP 3887030 A1 EP3887030 A1 EP 3887030A1 EP 20700885 A EP20700885 A EP 20700885A EP 3887030 A1 EP3887030 A1 EP 3887030A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- liquid
- connecting arms
- outer wing
- support plate
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 41
- 239000000843 powder Substances 0.000 title claims abstract description 25
- 239000000203 mixture Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 description 10
- 230000007704 transition Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
- B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
- B01F27/2711—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator provided with intermeshing elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/53—Mixing liquids with solids using driven stirrers
Definitions
- the invention relates to a rotor for a device for mixing powder and liquid according to the preamble of claim 1.
- the invention further relates to a device for mixing powder and liquid with such a rotor.
- Such a rotor and such a device are known from EP 3 069 786 A1.
- the known rotor has an outer wing support plate and a number of radially outer outer wings that extend in an axial direction and are integrally formed on the outer wing support plate. Furthermore, as a connection structure between the outer wing support plate and a centrally arranged shaft receptacle, a circular inner plate that is thickened with respect to the outer wing support plate is present.
- rotors for a device for mixing powder and liquid are known, which are formed with an outer wing support plate which has a number of connecting arms.
- the invention has for its object to provide a rotor of the type mentioned and a device equipped with such a rotor with a relatively high throughput and a relatively low tendency to stick to a powder side.
- This object is achieved with a rotor of the type mentioned in the invention with the characterizing features of claim 1.
- This object is achieved in a device according to the invention with the features of claim 8.
- the connecting structure according to the invention is formed by a number of connecting arms extending between the outer wing support plate and the shaft receptacle with intermediate free areas, through which a relatively high throughput of liquid is created in the axial direction, results in a relatively large liquid surface as well as a relatively high flow rate of liquid and thus an overall relatively high material throughput with a low tendency to stick.
- FIG. 1 in a perspective, partially sectioned representation
- Embodiment of a device according to the invention with an embodiment of a rotor according to the invention 2 is a perspective view of an exemplary embodiment of a rotor according to the invention
- FIG. 3 shows a top view of the exemplary embodiment of the rotor according to FIG. 2,
- FIGS. 2 and 3 shows a sectional view of the exemplary embodiment of the rotor according to FIGS. 2 and 3,
- FIG. 5 is a perspective view of another embodiment example of a rotor according to the invention.
- FIG. 6 is a perspective view of another embodiment example of a rotor according to the invention.
- Fig. 7 in a plan view of the embodiment of the rotor ge according to Fig. 6 and
- FIG. 8 shows a sectional view of the exemplary embodiment of the rotor according to FIG. 6.
- FIG. 1 shows a perspective, partially sectioned view of an embodiment of a device for mixing powder and liquid according to the invention.
- the exemplary embodiment according to FIG. 1 is equipped with a process chamber housing 103, in which a stator 106 which is fixed relative to the process chamber housing 103 and a rotor 109 which is rotatable relative to the stator 106 is arranged.
- the stator 106 has a circumferentially closed, cylindrical annular wall 1 12, which is formed with mixture passage recesses 115.
- the rotor 109 is connected to a motor-driven drive shaft 121 via a rotor fastening screw 118 arranged in the area of a centrally located shaft receptacle 117.
- the rotor 109 has a number of radially inner shear blades 124 and a number of radially outer outer blades 127, each of which extends approximately in the axial direction and between which an annular wall receiving gap 130 is formed, in which the stator 106 is arranged as intended and the rotor 109, the ring wall 112 is inserted.
- the drive shaft 121 is partially surrounded by a liquid supply chamber housing 133 which is flanged tightly to the process chamber housing 103 and is formed with a radially oriented liquid supply nozzle 136.
- liquid supply nozzle 136 is connected to a liquid supply line (not shown in FIG. 1), liquid can be fed into the process chamber housing 103 on the side facing away from the shear blades 124.
- a process chamber cover 139 is flanged to the process chamber housing 103 and is formed with an axially aligned powder supply nozzle 142.
- powder supply nozzle 142 is connected to a powder supply line (not shown in FIG. 1), powder can be supplied to the process chamber housing 103 on the side facing the shear blades 124.
- FIG. 2 shows a perspective view of an exemplary embodiment of a rotor 109 according to the invention, which can be used in a device according to the invention and in particular in a corresponding embodiment according to FIG. 1.
- the embodiment shown in FIG. 2 of a rotor 109 according to the invention has, in addition to the elements already explained in connection with FIG.
- a number of strut-like connecting arms 203 which in this exemplary embodiment lie in one plane, in the one in which The rotor fastening screw 118 is arranged in the middle region.
- the shear wings 124 are formed radially on the outside, which extend in an axial direction away from the connecting arms 203.
- connecting arms 203 which extend in a star-like manner from the shaft receptacle 117, there are a number of liquid outlet areas 206, which are designed to taper radially inwards, as free areas, each of which extends over the same angular sections and is regularly distributed over the circumference of the connecting arms 203.
- the radially outside on a circular circumference end faces 209 of the connecting arms 203 are in this embodiment opposite the outer wings 127 in ra dialer direction.
- the outer wing carrier plate 215 has the shape of a circular ring and is in a ge compared to the connecting arms 203 axially offset in parallel plane arranged so that a respective liquid passage channel 218 is formed between adjacent connecting webs 212.
- the outer wing support plate 215 carries the outer wings 127, which are essentially cuboid, extend with their long sides in the radial direction and in the axial direction from the outer wing support plate 215 to the plane in which the upper sides 221 facing away from the connecting arms 203 Blade 124 lies.
- the shear blades 124 are in this embodiment each in the basic shape of an acute-angled triangular wedge, the tip region of which points radially inward.
- a radially outward end wall 224 of each wedge-like shear wing 124 is rounded off with a radius corresponding to the circumference of the end faces 209 of the connecting arms 203.
- Be tenwalls 227, 230 of each such shear blade 124 are formed from plan and run at an acute angle to a sharp end edge 233 extending in the axial direction as the end face.
- the wedge-like shear blades 124 are adjusted in relation to the radial direction in such a way that the end edges 233 in the case of a designated direction of rotation R of the rotor 109 indicated by a solid arrow 236 in relation to an arrow 239 with a dashed line Main component indicated, the direction of rotation R supplemented by a radial component ge opposite flow direction F is at the front when mixing.
- the transition from the rear side wall 230 to the connecting arms 203 is rounded in a transition region 242.
- FIG. 2 shows a top view of the embodiment shown in FIG. 2, for example a rotor 109 according to the invention. From FIG.
- the wedge-shaped shear blades 124 are positioned with the front edge 233 in the direction of rotation R and at the front in the direction of flow F, so that the side wall 230 located in the direction of flow F is referred to the diameter represented by a dash-dotted line 303 D of the outer wing carrier plate 215 through the shaft holder 117 and through the end edge 233 with a relatively large angle a, for example in is oriented approximately at right angles, while the front side wall 227 in the flow direction F is set at an angle ⁇ smaller than the angle a obliquely to this diameter D that of the outer wing support plate 215 and thus flatter against the flow direction F.
- liquid passage areas 206 create a direct transition in the axial direction from the side of the connecting arms 203 facing the outer wing support plate 215 to the side of the connecting arms 203 carrying the shear wings 124. This results in a relatively high throughput and presence of liquid.
- FIG. 4 shows in a sectional view along the line IV-IV of FIG. 3 the exemplary embodiment of a rotor 109 according to the invention explained with reference to FIGS. 2 and 3.
- the illustration according to FIG. 4 shows that the rotor 109 has a drive shaft receiving sleeve 403, which is set up for receiving and fastening by means of the rotor fastening screw 118, the drive shaft 121 not shown in FIG. 4.
- the proportions of liquid exiting through the liquid outlet areas 206 and passing through the liquid passage channels 218 in the radial direction can be adapted to the mixing results to be achieved, in particular in addition to a relatively high throughput to achieve a relatively low tendency to stick powder by rela tively high liquid entry on the powder side.
- FIG. 5 shows a perspective view of a further exemplary embodiment of a rotor 109 according to the invention, wherein in the embodiment of a rotor 109 according to the invention explained with reference to FIGS. 2, 3 and 4, and in the embodiment with reference to FIG. 5 illustrated embodiment of a rotor 109 according to the invention corresponding elements with the same reference numerals and are not explained in more detail below.
- the exemplary embodiment of a rotor 109 according to the invention explained with reference to FIG. 5 is modified compared to the exemplary embodiment of a rotor 109 according to the invention explained with reference to FIGS. 2 to 4 in such a way that the wedge-like shear blades 124 are thus circumferentially offset from the outer blades 127. sets are.
- the wedge-like shear blades 124 lie in the circumferential direction between the outer blades 127. This results in a relatively high powder suction rate by the arrangement of the wedge-like shear blades 124 downstream of the outer blades 127 in the direction of rotation R of the rotor 109.
- FIG. 6 shows a perspective view of a further exemplary embodiment of a rotor 109 according to the invention, wherein in the exemplary embodiments of rotors 109 according to the invention explained with reference to FIGS. 2 to 5 and in the exemplary embodiment explained with reference to FIG Rotor 109 according to the invention corresponding elements with the same reference numerals and are not explained in detail below.
- FIG. 7 shows a top view of the exemplary embodiment explained with reference to FIG. 6 of a rotor 109 according to the invention.
- FIG. 7 shows that this rotor 109 has liquid outlet areas 206 that extend very far radially inward, as well as relatively filigree, star-shaped connecting arms 203 and thus provides a relatively high proportion of the liquid escaping in the axial direction, with the result that the tendency to Sales sticking powder is particularly low in this embodiment.
- FIG. 8 shows the exemplary embodiment of a rotor 109 according to the invention, explained with reference to FIGS. 6 and 7, in section along the line VIII-VIII of FIG. 7. From FIG. 8 it can be seen that the dome 603 in the axial direction is positioned approximately in the middle of the height of the outer wing 127. Furthermore, it is clear that the drive shaft receiving sleeve 403 is rounded on the outside in its area adjoining the dome 603, so that a portion of the liquid flowing past the drive shaft receiving sleeve 403 radially outward is deflected radially outward in the direction of the outer wings 127. This portion is then subjected to a pronounced shear effect provided by the inclined connecting arms 203.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019102585.0A DE102019102585A1 (de) | 2019-02-01 | 2019-02-01 | Rotor für eine Vorrichtung zum Mischen von Pulver und Flüssigkeit und Vorrichtung zum Mischen von Pulver und Flüssigkeit |
PCT/EP2020/050828 WO2020156806A1 (de) | 2019-02-01 | 2020-01-14 | Rotor für eine vorrichtung zum mischen von pulver und flüssigkeit und vorrichtung zum mischen von pulver und flüssigkeit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3887030A1 true EP3887030A1 (de) | 2021-10-06 |
EP3887030B1 EP3887030B1 (de) | 2022-12-07 |
Family
ID=69172795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20700885.5A Active EP3887030B1 (de) | 2019-02-01 | 2020-01-14 | Rotor für eine vorrichtung zum mischen von pulver und flüssigkeit, und vorrichtung zum mischen von pulver und flüssigkeit |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220008874A1 (de) |
EP (1) | EP3887030B1 (de) |
JP (1) | JP7313451B2 (de) |
DE (1) | DE102019102585A1 (de) |
WO (1) | WO2020156806A1 (de) |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1862906A (en) * | 1930-11-18 | 1932-06-14 | Preleuthner Julius | Mechanical stirrer |
DE2440809A1 (de) * | 1974-08-26 | 1976-03-18 | Hans Kimmel | Ruehrwerkzeug fuer einen mischer oder ruehrer |
US4175875A (en) * | 1976-10-29 | 1979-11-27 | Judd Van Horbek | Hand mixing apparatus |
US4176972A (en) * | 1978-08-09 | 1979-12-04 | National Gypsum Company | Coaxial pump mixer |
US4534657A (en) * | 1983-07-14 | 1985-08-13 | Crepaco, Inc. | Blending and emulsifying apparatus |
DE3728710C2 (de) * | 1987-08-28 | 1997-08-21 | Loedige Maschbau Gmbh Geb | Mischer zum Mischen von Feststoffschüttungen |
JPH0426024U (de) * | 1990-06-22 | 1992-03-02 | ||
DE29608713U1 (de) * | 1996-05-14 | 1996-08-08 | Wittek, Axel, 25582 Hohenaspe | Dispergiereinrichtung |
JP2000179492A (ja) * | 1998-12-18 | 2000-06-27 | Nippon Keiki Seisakusho:Kk | 薄形遠心送風ファン |
GB0601449D0 (en) * | 2006-01-25 | 2006-03-08 | Applied Energy Products Ltd | Improved impeller and fan |
JP2013111486A (ja) * | 2011-11-24 | 2013-06-10 | Toyota Motor Corp | 粉体吸引型混練装置 |
JP5832279B2 (ja) * | 2011-12-26 | 2015-12-16 | 株式会社ジェイテクト | 分散装置 |
US9643336B1 (en) * | 2014-11-06 | 2017-05-09 | Dennis D. Krivohlavek and Lucindy June Krivohlavek | Vertically moving horizontal mixer assembly with high efficiency blade and stator design |
DE102015105247B4 (de) * | 2015-02-04 | 2018-02-01 | Ika-Werke Gmbh & Co. Kg | Mischvorrichtung mit integrierter Förderpumpe |
GB2536502A (en) | 2015-03-20 | 2016-09-21 | Silverson Machines Ltd | Apparatus and method for high-shear mixing |
CN107920692B (zh) * | 2015-06-15 | 2023-04-04 | 维他拌管理有限公司 | 搅拌叶片 |
JP6687422B2 (ja) * | 2015-08-06 | 2020-04-22 | 日本スピンドル製造株式会社 | 分散システム |
ES2896922T3 (es) * | 2017-06-30 | 2022-02-28 | Tetra Laval Holdings & Finance | Mezclador con rotor de doble cara y método de mezcla |
-
2019
- 2019-02-01 DE DE102019102585.0A patent/DE102019102585A1/de not_active Ceased
-
2020
- 2020-01-14 WO PCT/EP2020/050828 patent/WO2020156806A1/de unknown
- 2020-01-14 US US17/423,886 patent/US20220008874A1/en active Pending
- 2020-01-14 EP EP20700885.5A patent/EP3887030B1/de active Active
- 2020-01-14 JP JP2021539619A patent/JP7313451B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
DE102019102585A1 (de) | 2020-08-06 |
US20220008874A1 (en) | 2022-01-13 |
JP2022523901A (ja) | 2022-04-27 |
JP7313451B2 (ja) | 2023-07-24 |
WO2020156806A1 (de) | 2020-08-06 |
EP3887030B1 (de) | 2022-12-07 |
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