EP0234768B1 - Rührer - Google Patents
Rührer Download PDFInfo
- Publication number
- EP0234768B1 EP0234768B1 EP87300911A EP87300911A EP0234768B1 EP 0234768 B1 EP0234768 B1 EP 0234768B1 EP 87300911 A EP87300911 A EP 87300911A EP 87300911 A EP87300911 A EP 87300911A EP 0234768 B1 EP0234768 B1 EP 0234768B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blades
- rotor
- fluid
- liquid
- sparging
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer 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
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring 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
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
- B01F23/23311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer axis
-
- 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
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
- B01F23/23314—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer element
-
- 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
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
- B01F23/23362—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced under the stirrer
-
- 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
-
- 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
-
- 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
- B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft 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
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
Definitions
- This invention relates to agitators for the dispersion of a fluid in a liquid.
- Disc turbine agitators with a plurality of axially aligned plane paddle blades are known for the dispersion of sparged gases as small bubbles in liquids in tanks and the concomitant mixing of the tank contents.
- a vortex low pressure zone forms behind each rotating blade of the turbine, and with the gas flow rates frequently encountered in industry, the gas tends to collect and be held as a cavity in this zone; this disadvantageously reduces dispersion and mixing efficiency and can cause turbine blade erosion.
- the same problem would be found with a sparged liquid less dense than the tank liquid.
- the present invention provides a turbine agitator assembly comprising a reservoir for liquid, a rotor mounted in the reservoir and with a plurality of radially extending blades, and means for sparging a fluid into liquid in the reservoir, the fluid sparging means and the rotor being so constructed and arranged that, in use, the rotor blades (submerged in the liquid) and/or the liquid flow they generate disperse the sparged fluid, wherein each of the blades is carried by an arm, is hollow and has a discontinuous leading edge at the leading face of the blade, only a single trailing edge along an acute angle, no external concave surface and an open radially outer end.
- a similar agitator assembly is disclosed in EP-A-0 224 459 (publication date : 3.6.1987, priority date : 21.11.1985).
- the blade may have a symmetrical cross-section, having a circular, parabolic or elliptical section leading face merging smoothly into a sphenoidal (i.e. wedge shaped) or sharply elongate parabolic or elliptical section trailing part.
- a sphenoidal i.e. wedge shaped
- sharply elongate parabolic or elliptical section trailing part i.e. wedge shaped
- the term 'trailing edge along an acute angle' thus includes both angular and sharply radiused edges.
- Parabolic or elliptical section leading faces are favoured as improving the streamline around the blade, although the leading part may also be sphenoidal.
- a preferred blade shape is a symmetrical aerofoil-like cross-section.
- the blade is hollow and the leading edge is discontinuous, for example in the form of holes, or in the preferred form of a slot symmetrically disposed in the leading face of a symmetrical cross-section blade.
- the radially outer end of the blade is at least partially open, so that such a blade provides a scooping action which disperses and mixes by pumping the scooped liquid radially outwards.
- the blade will be made of conventional metals or plastics used for turbine agitator paddles.
- the blade In its general form the blade has two elongate axes, one radial and one transverse, defining a 'blade plane'.
- This blade plane will generally coincide with or lie parallel to any plane of rotation described by the blade in use, that is the blade is usually not set at an 'attack angle' on or with respect to the rotor shaft.
- this latter possibility is not excluded, but the skilled man will readily appreciate that the angle should not be so great that the trailing (or any leading) edge behaves effectively as an axially projecting edge, and/or any trailing part of the blade surface behaves effectively as a concave surface, in tending to produce substantial vortices.
- the blades of the turbine rotor may be arranged in the same rotational plane or in any number of parallel rotational planes. It is preferred that the blades are arranged regularly within any one plane so that rotational balance is maximised. Preferably they are also (as apt) so arranged along the shaft and with respect to each blade in any other plane in accordance with routine engineering practice that torsional balance is maximised, for example, they are arranged with equal numbers of blades in each plane, and with corresponding blades in different planes axially in register or with all the planes regularly rotationally skewed with respect to one another.
- the blades may also be set at any angle to the rotor shaft in an axial direction, other than a right angle in order to provide an axial component of the discharge flow.
- the rotor may have 2 or more blades.
- the mixing efficiency of the turbine will generally increase with the number of blades in any one plane until such point that the blades are so close with respect to their transverse dimension that in use the action of any one blade interferes with the action of the following blade.
- the useful number of planes of blades is limited by any mutual interference between the planes due to proximity.
- the addition of further planes of blades increasingly remote from a single axial sparging source may also not increase the fluide dispersing efficiency of the turbine, but may still assist mixing of the liquid and/or liquid-fluid dispersion in the reservoir.
- suitable blade numbers include 2 to 24 coplanar blades, typically 4 to 12, and up to 5 planes of blades, typically 1.
- dimensions of the rotor are determined by the size of the reservoir, and usually the diameter will be one third to a half the corresponding reservoir transverse dimension.
- the fluid sparging means may have a single aperture, or multiple apertures such as a row, grid, rose or ring. Although the sparging of liquids, in particular those less dense than the reservoir liquids, is not excluded, the sparged fluid will often be a gas.
- the rotor and fluid sparging means may be placed in any orientation and mutual position which ensures that the fluid is delivered either to the volume swept by the rotor blades or to any directly adjacent zone on which any liquid flow generated by the rotor blades impinges (in both cases 'the dispersion zone').
- the rotor may be mounted in any orientation, although it will often be convenient to mount it upright with the sparging means mounted on the reservoir above or below it, e.g. spaced axially from it, so that the fluid may be delivered to the dispersion zone through the liquid essentially under gravity, either from below for a gas or liquid less dense than the reservoir liquid or from above for a denser liquid.
- the sparging means may then suitably be a hole, rose or ring coaxial with the rotor.
- the blades will not generally extend from the rotor shaft itself but will each be mounted on an arm or an equivalent structure on the shaft. It will be apparent that an axial hole, rose or ring sparging means of a smaller diameter than the overall rotor diameter which does not overlap the blades will not deliver fluid to the dispersion zone without a deflector. In such a case the blades may conveniently be mounted extending from the periphery of a rotor disc, the disc acting as a deflector. With the typical blade dimensions given hereinbefore, the disc will typically be 3D/4 in diameter, where D is the overall rotor diameter.
- the fluid may of course be delivered to a zone radially outside the volume swept by the blades, since the liquid pumped into this zone by the blades makes it a dispersion zone; a sparging ring may be used.
- the rotor may be mounted cross-wise with the sparging means mounted on the reservoir and spaced radially from it above or below, again conveniently to allow delivery essentially under gravity.
- the sparging means may then suitably be an axially aligned row, a transverse straight or arcuate row or a planar or curved grid depending on the rotor structure.
- the sparging means may be mounted on the rotor, for example as an aperture or apertures in front of each blade or spaced axially from the or a blade plane.
- the present assembly is particularly useful for gas-liquid mass transfer processes, and for low-shear thorough mixing, e.g. of sensitive substrates such as living cell fermentation suspensions or polymer latices or dispersions subject to ready degradation or coagulation.
- a rotor is rotatably mounted vertically within a reservoir 2 (not shown) capable of holding a liquid 3 (also not shown) to submerge the rotor.
- the rotor consists of a shaft 5 (driven by an electric motor 6 - not shown) on which a plurality (four or six) radially extending blades 7 are mounted regularly about the shaft 5 in a single plane by means of a disc or arms 8.
- Each blade 7 is of symmetrical uniform aerofoil cross-section with a single sphenoidal acute-angle trailing edge 9 extending the length of the blade 7.
- Each blade 7 is hollow and its leading face 10 has a symmetically disposed slot 11 extending the length of the blade 7.
- the ends 12 of the blade 7 are open.
- the blades 7 are mounted such that their central planes of symmetry are coplanar.
- a means for sparging gas 14 is, in Figures 1 to 3, mounted on the reservoir below the level of and coaxial with the rotor.
- it is a single aperture or a sparging ring of apertures which do not overlap the blades 7.
- it is a sparging ring lying below a zone 19 radially outside the volume 18 swept by the blades in use.
- the sparging means 14 consists of four apertured tubes mounted on, projecting from, and communicating with the hollow interior of the shaft 5, and regularly spread between and coplanar with the blades 6. Their apertures 15 are in the trailing face of each tube 14.
- the reservoir 2 is filled with liquid 3 to submerge the blades 7 of the rotor, which is then rotated in the direction of arrow A.
- Gas 17 is then supplied via sparging apertures 15 (in Figure 4 through the hollow interior of the rotor shaft 5 and tubes 14) to the volume 18 swept by the blades (in Figure 1 by deflection by the disc 8) or the zone 19.
- liquid is scooped in by the blades 7 through the slot 11 and discharged through the open blade end 12 into the dispersion zone 19.
- the gas 17 flows over the outer surface of the blades 7, and in all cases the gas is dispersed in the zone 19.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Accessories For Mixers (AREA)
- Liquid Crystal Substances (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
Claims (13)
- Ein Turbinenrühreraufbau, der einen Flüssigkeitsbehälter,
einen Rotor, der in dem Behälter und mit einer Vielzahl sich radial erstreckenden Schaufeln (7) montiert ist, und
Mittel zum Einblasen eines Fluids in eine in dem Behälter befindliche Flüssigkeit hinein, enthält,
wobei das Einblasmittel für das Fluid und der Rotor so konstruiert und angebracht sind, daß bei Betrieb die (in der Flüssigkeit) eingetauchten Laufschaufeln und/oder die Flüssigkeitsströmung bewirken, daß das eingeblasene Fluid dispergiert,
wobei jede durch einen Arm (8) getragene Schaufel (7) ein Hohlprofil ist und eine diskontinuierliche Kante auf der Stirnfläche (10) der Schaufel, nur eine Hinterkante (9) längs eines spitzen Winkels, keine äußere, konkave Oberfläche und ein radial äußeres, offenes Ende (12) aufweist. - Ein Turbinenrühreraufbau, der einen Flüssigkeitsbehälter,
einen Rotor, der in dem Behälter und mit einer Vielzahl sich radial erstreckenden Schaufeln (7) montiert ist und
Mittel zum Einblasen eines Fluids in eine in dem Behälter befindliche Flüssigkeit hinein, enthält,
wobei das Fluid-Einblasmittel (14) und der Rotor so konstruiert und angeordnet sind, daß die Laufschaufeln bei Betrieb (in die Flüssigkeit eingetaucht) und/ oder die Flüssigkeitsströmung ein Dispergieren des eingeblasenen Fluids bewirken,
wobei jede Schaufel (7) ein Hohlprofil ist und eine diskontinuierliche Kante auf der Stirnfläche der Schaufel, nur eine Hinterkante (9) längs eines spitzen Winkels, keine äußere, konkave Oberfläche und ein radial äußeres, offenes Ende (12) aufweist und wobei das Einblasmittel (14) so angebracht ist, daß es bei Betrieb das eingeblasene Fluid in einen Bereich fördert, der radial außerhalb des Raumes liegt, der von den Schaufeln überstrichen wird. - Ein Turbinenrühreraufbau, der einen Flüssigkeitsbehälter,
einen im Behälter befestigten und eine Vielzahl Schaufeln (7) tragenden Rotor, und
Mittel (14) zum Einblasen eines Fluids in eine im Behälter befindliche Flüssigkeit hinein enthält;
und das Fluid-Einblasmittel und der Rotor so konstruiert und angebracht sind, daß die Laufschaufeln bei Betrieb und/ oder die Flüssigkeitsströmung das Dispergieren des Einblasfluids bewirken,
wobei jede der Schaufeln (7) eine löffelförmige Gestalt aufweist, deren Öffnung die Stirnfläche (10) der Schaufel bildet, jede Schaufel nur eine Hinterkante (9) längs eines spitzen Winkels, keine äußere, konkave Oberfläche und ein offenes Ende (12) aufweist, durch das die Flüssigkeit ausströmt,wobei jede Schaufel zur Rotationsachse geneigt ist, um eine axiale Komponente der austretenden Strömung zu liefern. - Ein Aufbau nach einem der Ansprüche 1 bis 3, in dem jede Schaufel einen symmetrischen, dem Tragflügel ähnlichen, Querschnitt mit einer einen parabolischen oder elliptischen Abschnitt aufweisende Stirnfläche hat, die glatt in eine keilförmige Hinterkante übergeht.
- Ein Aufbau nach Anspruch 4, der eine Schlitzöffnung (11) aufweist, die symmetrisch in der Stirnfläche angeordnet ist.
- Ein Aufbau nach Anspruch 4 oder 5, in dem bei Betrieb die Schaufelebene mit der Rotationsebene der Schaufel übereinstimmt oder parallel zu dieser liegt.
- Ein Aufbau nach einem der Ansprüche 1 bis 6, in dem die Schaufeln regelmäßig in derselben Rotationsebene oder in jeder von einer Anzahl von parallelen Rotationsebenen angeordnet sind.
- Ein Aufbau nach Anspruch 7, in dem die Schaufeln in einer Anzahl von parallelen Rotationsebenen, die die gleiche Anzahl von Schaufeln in jeder Ebene und entsprechende Schaufeln in verschiedenen Ebenen, die axial übereinanderliegen, aufweist oder in allen Ebenen, mit Rücksicht aufeinander regelmäßig um die Drehachse versetzt, angeordnet sind.
- Ein Aufbau nach Anspruch 7, der 4 bis 12 Schaufeln in einer einzigen Rotationsebene aufweist.
- Ein Aufbau nach Anspruch 3 oder einem der Ansprüche 4 bis 9, wenn von Anspruch 3 abhängig, in dem die Schaufeln auf einer waagerechten Läuferscheibe montiert sind und der Aufbau so angeordnet ist, daß bei Betrieb die Scheibe dazu dient, das Einblasmittel zum Volumen abzulenken, das von den Schaufeln überstrichen wird.
- Ein Aufbau nach Anspruch 1 oder einem der Ansprüche 4 bis 9, wenn von Anspruch 1 abhängig, in dem das Einblasmittel so angeordnet ist, daß es bei Betrieb das Einblas-Fluid in einen Bereich fördert, der radial außerhalb des von den Schaufeln überstrichenen Volumens liegt.
- Ein Aufbau nach Anspruch 1, in dem das Einblasmittel auf dem Rotor montiert ist.
- Ein Rührer nach Anspruch 2 oder 3 oder einem der Ansprüche 4 bis 9 oder nach Anspruch 11, wenn von Anspruch 2 oder 3 abhängig, bei dem jede Schaufel durch einen Arm (8) getragen wird.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87300911T ATE83169T1 (de) | 1986-02-17 | 1987-02-02 | Ruehrer. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB868603904A GB8603904D0 (en) | 1986-02-17 | 1986-02-17 | Agitators |
GB8603904 | 1986-02-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0234768A2 EP0234768A2 (de) | 1987-09-02 |
EP0234768A3 EP0234768A3 (en) | 1989-04-26 |
EP0234768B1 true EP0234768B1 (de) | 1992-12-09 |
Family
ID=10593203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87300911A Expired - Lifetime EP0234768B1 (de) | 1986-02-17 | 1987-02-02 | Rührer |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0234768B1 (de) |
JP (1) | JPS62193635A (de) |
AT (1) | ATE83169T1 (de) |
AU (1) | AU580702B2 (de) |
CA (1) | CA1257196A (de) |
DE (1) | DE3782951T2 (de) |
ES (1) | ES2037078T3 (de) |
GB (1) | GB8603904D0 (de) |
HK (1) | HK1001041A1 (de) |
IE (1) | IE60597B1 (de) |
NZ (1) | NZ219280A (de) |
ZA (1) | ZA87882B (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9101546D0 (en) * | 1990-02-05 | 1991-03-06 | Ici Plc | Agitators |
GB2268420B (en) * | 1992-07-04 | 1995-11-29 | Flow Research Evaluation Diagn | Improvements relating to liquid treatment apparatus |
US5791780A (en) * | 1997-04-30 | 1998-08-11 | Chemineer, Inc. | Impeller assembly with asymmetric concave blades |
JP2003010664A (ja) * | 2001-07-03 | 2003-01-14 | Kawata Mfg Co Ltd | 粉粒体の混合装置 |
DE10336054B4 (de) * | 2003-08-01 | 2005-12-15 | Domo Caproleuna Gmbh | Verfahren zur Herstellung von Hydroxylammoniumsalzen |
DE102007001711A1 (de) * | 2007-01-11 | 2008-07-17 | EKATO Rühr- und Mischtechnik GmbH | Rühranordnung mit einem Rührorgan und einer Begasungseinrichtung |
US20080199321A1 (en) * | 2007-02-16 | 2008-08-21 | Spx Corporation | Parabolic radial flow impeller with tilted or offset blades |
CN103958041B (zh) * | 2011-11-24 | 2016-10-19 | 王利 | 具有槽形叶片的搅拌叶轮 |
NL2009286C2 (en) * | 2012-08-06 | 2014-02-10 | Stichting Energie | Swallow tail airfoil. |
US11136958B2 (en) | 2012-08-06 | 2021-10-05 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Swallow tail airfoil |
CN102974504B (zh) * | 2012-12-06 | 2016-05-18 | 济南圣泉集团股份有限公司 | 一种防沉淀涂料机 |
JP2014136203A (ja) * | 2013-01-18 | 2014-07-28 | Chugoku Electric Power Co Inc:The | 攪拌器 |
DE102013002060A1 (de) * | 2013-02-07 | 2014-08-07 | Wilfried Rummel | Vorrichtung zur Herstellung von kolloidalen Fluiden mit einem Kolloidationsbehälter und Verfahren |
JP5898297B2 (ja) * | 2014-11-20 | 2016-04-06 | グローバルアドバンストメタルジャパン株式会社 | 窒素含有金属粉末の製造方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0224459A2 (de) * | 1985-11-21 | 1987-06-03 | Sven Hjort | Mit einer Rührvorrichtung versehener Apparat |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2207144A1 (de) * | 1972-02-16 | 1973-08-30 | Schoeller Bleckmann Stahlwerke | Begasungsvorrichtung mit fluegelartigen ruehrarmen |
AU502018B2 (en) * | 1976-05-04 | 1979-07-12 | United States Filter Corporation | Mixing apparatus |
US4159181A (en) * | 1976-12-23 | 1979-06-26 | American Pelletizing Corporation | Mixing and pelletizing machine |
AU509477B2 (en) * | 1977-09-05 | 1980-05-15 | Gousti International Ltd. | Mixing apparatus |
US4305673A (en) * | 1980-03-25 | 1981-12-15 | General Signal Corporation | High efficiency mixing impeller |
JPS5724624A (en) * | 1980-07-18 | 1982-02-09 | Shozo Urashi | Vapor-liquid contact apparatus |
JPS5759625A (en) * | 1980-09-29 | 1982-04-10 | Yoichi Nagase | Stirring blade |
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1986
- 1986-02-17 GB GB868603904A patent/GB8603904D0/en active Pending
-
1987
- 1987-02-02 DE DE8787300911T patent/DE3782951T2/de not_active Expired - Lifetime
- 1987-02-02 AT AT87300911T patent/ATE83169T1/de not_active IP Right Cessation
- 1987-02-02 EP EP87300911A patent/EP0234768B1/de not_active Expired - Lifetime
- 1987-02-02 ES ES198787300911T patent/ES2037078T3/es not_active Expired - Lifetime
- 1987-02-03 IE IE27987A patent/IE60597B1/en not_active IP Right Cessation
- 1987-02-06 ZA ZA87882A patent/ZA87882B/xx unknown
- 1987-02-10 CA CA000529394A patent/CA1257196A/en not_active Expired
- 1987-02-13 AU AU68764/87A patent/AU580702B2/en not_active Ceased
- 1987-02-16 NZ NZ219280A patent/NZ219280A/xx unknown
- 1987-02-17 JP JP62032568A patent/JPS62193635A/ja active Pending
-
1997
- 1997-12-09 HK HK97102369A patent/HK1001041A1/xx not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0224459A2 (de) * | 1985-11-21 | 1987-06-03 | Sven Hjort | Mit einer Rührvorrichtung versehener Apparat |
Also Published As
Publication number | Publication date |
---|---|
DE3782951T2 (de) | 1993-07-08 |
ATE83169T1 (de) | 1992-12-15 |
AU6876487A (en) | 1987-08-20 |
HK1001041A1 (en) | 1998-05-22 |
GB8603904D0 (en) | 1986-03-26 |
IE60597B1 (en) | 1994-07-27 |
EP0234768A3 (en) | 1989-04-26 |
NZ219280A (en) | 1988-10-28 |
JPS62193635A (ja) | 1987-08-25 |
IE870279L (en) | 1987-08-17 |
ZA87882B (en) | 1987-10-28 |
ES2037078T3 (es) | 1993-06-16 |
CA1257196A (en) | 1989-07-11 |
DE3782951D1 (en) | 1993-01-21 |
AU580702B2 (en) | 1989-01-27 |
EP0234768A2 (de) | 1987-09-02 |
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