WO2011036113A2 - Axialwirkendes rührorgan, vorzugsweise ein aus blech gefertigter propeller - Google Patents
Axialwirkendes rührorgan, vorzugsweise ein aus blech gefertigter propeller Download PDFInfo
- Publication number
- WO2011036113A2 WO2011036113A2 PCT/EP2010/063777 EP2010063777W WO2011036113A2 WO 2011036113 A2 WO2011036113 A2 WO 2011036113A2 EP 2010063777 W EP2010063777 W EP 2010063777W WO 2011036113 A2 WO2011036113 A2 WO 2011036113A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- propeller
- axial
- blades
- stirrer
- sheet metal
- Prior art date
Links
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
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/113—Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/78—Making other particular articles propeller blades; turbine blades
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/49327—Axial blower or fan
Definitions
- Axially acting stirring element preferably a propellant made of sheet metal
- the present invention relates to an axial-acting stirrer, preferably a propeller made of sheet metal, with radially arranged about an axis blades, and the use of such a stirrer in an agitator for stirring and / or mixing and a method for producing such a stirrer.
- Axial-acting propellers are known in numerous designs from the prior art.
- the propellers in the agitators of the models Amamix 300 or Amamix 400 KSB Aktiengesellschaft called. These models are used, inter alia, as horizontal submersible mixers for mixing, homogenizing and thickening of municipal or industrial effluents and sludges use.
- the propellers used are particularly suitable for the production of from the Forderfluid resistant, in particular corrosion-resistant, sheet metal materials.
- propellers which have a constant or almost constant plate or blade thickness, occur in the partially viscous media to be stirred on rotation higher power losses at the trailing edge, as in propellers with profiled blades, the latter are much more expensive to produce.
- the object of the present invention is to further reduce the rotational resistance of a propeller. It can also be achieved a significant saving of the energy required for the stirring process.
- a further object of the invention is therefore to achieve an improved stirring result with constant expenditure of energy, a constant stirring result with less expenditure of energy or an improved stirring result with less expenditure of energy when using a stirring element according to the invention.
- An axially acting stirrer preferably a propeller, with blades arranged radially about an axis should therefore have at least one blade which has a sharpened edge on the outlet side.
- the term "axial" stirring means is understood here to mean those stirring elements on which the blades are arranged radially and mostly at an angle about an axis of rotation It is to be understood that the edge of the blade which lags in the intended direction of rotation during operation of the stirring element is in the intended direction of rotation.
- one or more blades are also sharpened at the entrance side.
- the thrust / power ratio can be improved.
- the improvements that result from a reinforcement only at the front or the back can be significantly exceeded.
- an agitation system according to the invention has at least one blade with the aforementioned properties.
- several, half or all of the blades of the stirring element according to the invention are sharpened on the inlet and / or outlet side.
- the increase on the inlet and / or outlet side individually has an angle of attack of between about 5 ° to about 30 °, preferably between about 10 ° to about 15 °.
- This angle of attack may have a constant angle across all blades when there are multiple blades that are sharpened on the exit side. The same applies if there are several blades which have been sharpened on the inlet side.
- the ground joint is attached to the suction side of the blades.
- the upper side of the blades is to be understood as the side along the axis of rotation from which, during rotation of the propeller in the intended direction of rotation, the agitated medium flows through the agitator, ie the upstream side of the blades.
- Such a cut can in turn have a positive effect on the automation and cost of the construction.
- not the entire edge is sharpened, but only one area.
- This may preferably be the outer region, that is to say the region further away from the axis of rotation, since the absolute velocity of the edges through the medium at the same rotational speed is higher here than in the inner region.
- the blades are treated only in the outer two-thirds or only the outer half.
- such an agitator is used with an overall diameter of between about 20 cm and about 1 m, preferably between about 30 cm and about 60 cm, and more preferably between about 30 cm and about 40 cm. In another embodiment, the overall diameter is between about 40 cm and about 80 cm.
- agitator orbital diameters greater than 1 m are also suitable for use in corresponding agitators and should justify a noticeable gain in the thrust / power ratio.
- one or more blades are made of sheet metal.
- sheet metal is to be understood as meaning a flat or nearly flat sheet of metal.
- Many metals, and especially alloys, are useful as base materials for the present application, however, in one embodiment, resistant steel sheets and aluminum sheets are particularly notable over the production fluids.
- one or more blades outside the sharpened locations has a constant thickness. This is also advantageous in terms of price, justifies a moderate weight of the propeller stirrer and has the advantage of a low rotational resistance. Sheets usually have a constant thickness over their surface.
- the blades or the material underlying the blades are between 3 and 15 mm, preferably between 3 and 8 mm thick. These values also vary, of course, depending on the application and Rhackorgan trimmesser.
- one or more blades are arched. This construction is advantageous in the case of a propeller stirrer in order to justify an axial axis which is as large as possible in the direction of flow of the stirred medium.
- the curvature of the curvature at each point of the blade has a uniform sign or is 0.
- the curvature is such that the blades at the location of attachment to the shaft in an angled with respect to the direction of rotation and at the outer ends have a position along the direction of rotation.
- a sheet is used for the construction of a propeller, that this sheet is bent to the shape of a blade and welded to a propeller hub.
- one or more blades are sickle-shaped.
- This crescent-shaped shape can result both from the shape of the non-arched material, preferably the sheet, or from the plan view of the blades along the axis of rotation.
- the blades do not converge on the outside in a pointed manner, but are rounded off or obliquely or tangentially cut off. Such a design results in a high stability of the blades into their end region and less turbulence formation.
- At least two blades in size, their distance and / or their shape are designed so that in a Top view in the direction of the axis of rotation superimpose individual blades.
- all blades Preferably, all blades have the same distance, but at least a regular distance pattern to each other.
- the preferred number of blades of a propeller according to the invention is generally between 2 and about 10 blades, preferably between 2 and 5 blades and more preferably with exactly 3 blades.
- the blades have a width of between about 5 cm and about 30 cm, preferably between about 10 cm and about 25 cm, over their length (about D / 2), which is determined closer above the diameter. This size can relate both to the width of the sheet before the bend and to the width of the propeller when viewed from the axial direction.
- propellers can be introduced centrically or eccentrically into a medium to be mixed or stirred. Several such propellers within a medium are also conceivable.
- the propeller can be introduced along an axis perpendicular from above or from below into the target area or laterally, obliquely or angled.
- a further aspect of the invention is the use of a stirring element just described.
- a stirring element is used in an agitator for stirring and / or mixing.
- the use is preferably provided in a mixer or a submersible mixer, particularly preferably for mixing, homogenizing and thickening of preferably municipal and / or industrial wastewaters or sludges.
- the propeller will experience between about 100 and about 1500 revolutions per minute, preferably between about 500 and about 1000 revolutions per minute.
- An exemplary maximum drive power for industrial use should be about 5 kW.
- Such a propeller is preferably operated with an electric motor.
- the invention also includes such agitators, which are suitable for the just mentioned application and have an inventive stirring element.
- the invention comprises a method for producing an axial propeller with the steps of producing at least one piece of sheet metal in a form suitable for a blade by punching, cutting, welding and / or another suitable method, bending the at least one piece of sheet metal, enhancing the at least one piece of sheet metal at least its planned outlet side and welding the at least one piece of metal to a propeller hub.
- an agitating device is to be produced according to any of the presented embodiments.
- the specifications presented above with reference to the individual embodiments for the various possible properties of agitators according to the invention should therefore also apply to the method steps.
- the order mentioned in the preceding paragraph and in claim 15 is not intended to be limiting.
- the steps of forming, for example in the form of pressing or pressing, adding and welding a piece of sheet metal can be arbitrarily reversed as needed.
- FIG. 1 shows an oblique view of an agitation system according to the invention
- FIG. 1 a an oblique view of a stirrer of the prior art
- FIG. 2 an illustration of a propeller according to the invention
- Figure 2a a blade of a propeller according to the invention
- FIG. 3 shows a cross section of a blade according to the invention
- FIG. 3a shows a cross section of a blade according to the prior art
- FIG. 1 shows a propeller agitator with a propeller according to the invention.
- the propeller 1 is attached to the propeller hub 2 along an axis A.
- the blades 3 are curved. They show an inlet side 4 and an outlet side 5, and are cut off at their outer ends 6. Both the edge on the inlet side 4 and the edge on the outlet side 5 are sharpened.
- FIG. 2 shows a representation of a section of a propeller according to the invention. This prototype was fabricated by milling the exit side based on the Amamix 300 model of KSB Aktiengesellschaft. Particularly blade 3a is clearly visible. Shovel 3a is placed in this illustration on a blade of a second, reversely arranged propeller of Figure 1 a. The propeller hub 2 and the propeller hub 2.1 of the prior art propeller are adjacent to each other.
- FIG. 2 a shows a representation of a section of a propeller according to the invention in the form of a single blade 3 a.
- the convexly curved part 4a of the sickle-shaped blade 3a represents the entrance side and the concavely curved part 5a the exit side. It can be clearly seen that the blade was chamfered on the exit side (emphasis B). The two-sided increase the stirring resistance is significantly reduced and achieved an improved thrust / power ratio.
- FIG. 3 shows the cross section of a blade of a propeller according to the invention.
- the blade 3 is for simplicity's sake in cross section straight, that is not shown curved.
- the inlet side 4 and the outlet side 5 are sharpened in accordance with the angles ⁇ and ⁇ . These angles may be individually in the general part of the application issued range for the cutting angle.
- the top 7 and the bottom 8 are parallel to each other and the blade 3 has over its entire width a uniform thickness d. It is also contemplated in this embodiment that the blade has a uniform thickness d over its entire surface.
- the thickness can be seen in FIG. 3 as size d and preferably moves within the range given in the general part of the description.
- Figure 3a shows the cross-section of a blade of the prior art.
- the angle ⁇ herein is about 90 °.
- the edge on the exit side is not sharpened.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL10755165T PL2480321T3 (pl) | 2009-09-24 | 2010-09-20 | Element mieszający, działający osiowo |
RU2012114482/05A RU2559501C2 (ru) | 2009-09-24 | 2010-09-20 | Перемешивающий элемент, работающий в осевом направлении, предпочтительно крыльчатка, изготовленная из листового металла |
AU2010299998A AU2010299998B2 (en) | 2009-09-24 | 2010-09-20 | Axially operating stirring element, preferably a propeller manufactured from sheet metal, stirrer and method for producing same |
BR112012006425-8A BR112012006425A2 (pt) | 2009-09-24 | 2010-09-20 | elemento de agitação de operação de agitação para agitar e ou misturar e metodo para produção de um elemento de agitação |
DK10755165.7T DK2480321T3 (en) | 2009-09-24 | 2010-09-20 | Aksialvirkende stirrer |
EP10755165.7A EP2480321B1 (de) | 2009-09-24 | 2010-09-20 | Axialwirkendes rührorgan |
CN2010800426413A CN102510773A (zh) | 2009-09-24 | 2010-09-20 | 轴向作用的搅拌构件,优选是由金属片制成的螺旋桨 |
CA2775123A CA2775123C (en) | 2009-09-24 | 2010-09-20 | Axially operating stirring element, preferably a propeller manufactured from sheet metal |
ES10755165.7T ES2541599T3 (es) | 2009-09-24 | 2010-09-20 | Agitadores de efecto axial |
US13/428,217 US20120188843A1 (en) | 2009-09-24 | 2012-03-23 | Axially Operating Stirring Element Manufactured from Sheet Metal |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009042843.7 | 2009-09-24 | ||
DE102009042843 | 2009-09-24 | ||
DE102010044423.5 | 2010-09-04 | ||
DE102010044423A DE102010044423A1 (de) | 2009-09-24 | 2010-09-04 | Axialwirkendes Rührorgan, vorzugsweise ein aus Blech gefertigter Propeller |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/428,217 Continuation US20120188843A1 (en) | 2009-09-24 | 2012-03-23 | Axially Operating Stirring Element Manufactured from Sheet Metal |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011036113A2 true WO2011036113A2 (de) | 2011-03-31 |
WO2011036113A3 WO2011036113A3 (de) | 2011-05-19 |
Family
ID=43705865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/063777 WO2011036113A2 (de) | 2009-09-24 | 2010-09-20 | Axialwirkendes rührorgan, vorzugsweise ein aus blech gefertigter propeller |
Country Status (12)
Country | Link |
---|---|
US (1) | US20120188843A1 (de) |
EP (1) | EP2480321B1 (de) |
CN (1) | CN102510773A (de) |
AU (1) | AU2010299998B2 (de) |
BR (1) | BR112012006425A2 (de) |
CA (1) | CA2775123C (de) |
DE (1) | DE102010044423A1 (de) |
DK (1) | DK2480321T3 (de) |
ES (1) | ES2541599T3 (de) |
PL (1) | PL2480321T3 (de) |
RU (1) | RU2559501C2 (de) |
WO (1) | WO2011036113A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2867537A4 (de) * | 2012-06-20 | 2016-03-23 | Philadelphia Mixing Solutions Ltd | Leistungsstarkes verschmutzungsfreies geformtes axiallaufrad |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11596907B1 (en) | 2019-06-14 | 2023-03-07 | Aeration Industries International, Llc | Apparatus for treating fluids having improved aeration efficiency and operational durability |
Family Cites Families (19)
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US2293183A (en) * | 1939-04-03 | 1942-08-18 | American Well Works | Mixing turbine |
US2336303A (en) * | 1941-08-04 | 1943-12-07 | Frank H Schubert | Method of making fans |
US2799919A (en) * | 1951-11-01 | 1957-07-23 | Gen Motors Corp | Sheet metal blade and manufacture |
GB786727A (en) * | 1954-05-11 | 1957-11-27 | Edward Archibald Stalker | Method and apparatus for making hollow blades for compressors and gas turbines |
US3184833A (en) * | 1956-02-01 | 1965-05-25 | Borg Warner | Method of making vanes for hydraulic couplings |
US4240990A (en) * | 1979-04-10 | 1980-12-23 | Aeration Industries, Inc. | Aeration propeller and apparatus |
SU1197717A1 (ru) * | 1984-01-13 | 1985-12-15 | Государственный научно-исследовательский и проектный институт по обогащению руд цветных металлов "Казмеханобр" | Диспергатор |
GB8617569D0 (en) * | 1986-07-18 | 1986-08-28 | Davidson J F | Impellers |
US5211924A (en) * | 1988-02-29 | 1993-05-18 | Amoco Corporation | Method and apparatus for increasing conversion efficiency and reducing power costs for oxidation of an aromatic alkyl to an aromatic carboxylic acid |
US5052892A (en) * | 1990-01-29 | 1991-10-01 | Chemineer, Inc. | High efficiency mixer impeller |
US5297938A (en) * | 1990-03-26 | 1994-03-29 | Philadelphia Mixers Corporation | Hydrofoil impeller |
US5100240A (en) * | 1990-05-11 | 1992-03-31 | Alterio Joseph C D | High-speed continuous mixer for solids and liquids |
SU1761244A1 (ru) * | 1990-07-02 | 1992-09-15 | Днепропетровский инженерно-строительный институт | Устройство дл получени пенного аэрозол |
US5158434A (en) * | 1990-07-26 | 1992-10-27 | General Signal Corporation | Mixing impellers and impeller systems for mixing and blending liquids and liquid suspensions having a wide range of viscosities |
DE4226498A1 (de) * | 1992-08-11 | 1994-02-17 | Klein Schanzlin & Becker Ag | Rührwerkspropeller |
US5344235A (en) * | 1993-01-21 | 1994-09-06 | General Signal Corp. | Erosion resistant mixing impeller |
US6550703B2 (en) * | 2001-03-29 | 2003-04-22 | Hamilton Beach/Proctor-Silex, Inc. | Blender cutter |
US6866414B2 (en) * | 2001-05-22 | 2005-03-15 | Jv Northwest, Inc. | Sanitary mixing assembly for vessels and tanks |
CN201316604Y (zh) * | 2008-12-02 | 2009-09-30 | 北京矿冶研究总院 | 一种叶轮式搅拌装置 |
-
2010
- 2010-09-04 DE DE102010044423A patent/DE102010044423A1/de not_active Withdrawn
- 2010-09-20 AU AU2010299998A patent/AU2010299998B2/en not_active Ceased
- 2010-09-20 RU RU2012114482/05A patent/RU2559501C2/ru not_active Application Discontinuation
- 2010-09-20 DK DK10755165.7T patent/DK2480321T3/en active
- 2010-09-20 EP EP10755165.7A patent/EP2480321B1/de active Active
- 2010-09-20 CA CA2775123A patent/CA2775123C/en active Active
- 2010-09-20 PL PL10755165T patent/PL2480321T3/pl unknown
- 2010-09-20 WO PCT/EP2010/063777 patent/WO2011036113A2/de active Application Filing
- 2010-09-20 BR BR112012006425-8A patent/BR112012006425A2/pt not_active Application Discontinuation
- 2010-09-20 ES ES10755165.7T patent/ES2541599T3/es active Active
- 2010-09-20 CN CN2010800426413A patent/CN102510773A/zh active Pending
-
2012
- 2012-03-23 US US13/428,217 patent/US20120188843A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
None |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2867537A4 (de) * | 2012-06-20 | 2016-03-23 | Philadelphia Mixing Solutions Ltd | Leistungsstarkes verschmutzungsfreies geformtes axiallaufrad |
US9962665B2 (en) | 2012-06-20 | 2018-05-08 | Philadelphia Mixing Solutions, Ltd. | High efficiency, non-ragging, formed axial impeller |
US11241663B2 (en) | 2012-06-20 | 2022-02-08 | Philadelphia Mixing Solutions, Ltd. | High efficiency, non-ragging, formed axial impeller |
Also Published As
Publication number | Publication date |
---|---|
DK2480321T3 (en) | 2015-06-29 |
CA2775123C (en) | 2017-10-24 |
EP2480321A2 (de) | 2012-08-01 |
RU2559501C2 (ru) | 2015-08-10 |
CN102510773A (zh) | 2012-06-20 |
WO2011036113A3 (de) | 2011-05-19 |
CA2775123A1 (en) | 2011-03-31 |
EP2480321B1 (de) | 2015-04-15 |
BR112012006425A2 (pt) | 2020-11-03 |
DE102010044423A1 (de) | 2011-04-07 |
AU2010299998B2 (en) | 2013-11-07 |
PL2480321T3 (pl) | 2015-10-30 |
ES2541599T3 (es) | 2015-07-22 |
AU2010299998A1 (en) | 2012-04-12 |
US20120188843A1 (en) | 2012-07-26 |
RU2012114482A (ru) | 2013-10-27 |
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