|Publication number||US2038221 A|
|Publication date||Apr 21, 1936|
|Filing date||Jan 10, 1935|
|Priority date||Jan 10, 1935|
|Publication number||US 2038221 A, US 2038221A, US-A-2038221, US2038221 A, US2038221A|
|Inventors||Walter W Kagi|
|Original Assignee||Western Electric Co|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (63), Classifications (11)|
|External Links: USPTO, USPTO Assignment, Espacenet|
April 2l, 1936 w. w. KAGI 2,038,221
METHOD OF AND APPARATUS FOR STIRRING MATERIALS Filed Jan. l0, 1955 W W /fAG/ Patented Apr. 21, '1936 METHOD F AND APPARATUS FOR STIRRING MATERIALS Walter W. Kagi, La Grange, Ill., assigner to Western Electric Company, Incorporated, New York, N. Y., a corporation of New York Application January 10, 1935, Serial No. 1,120
'I'his invention relates to a method of and apparatus for stirring materials, and more particularly to a method of and apparatus for mixing lead alloys.
Although not limited thereto, the method and apparatus of the present invention are particularly applicable for mixing lead alloys for cable sheath. Such sheath is, in some instances, made from lead alloyed with a hardening constituent, such as calcium or antimony, the amount of which must be maintained within close limits in order to produce uniform cable sheath having the desired characteristics. Also, the hardeningl constituent must be thoroughly and intimately mixed with the lead.
Such alloys are usually prepared in a large melting receptacle or kettle in which a mechanical stirrer or agitator is. employed for thoroughly mixing the calcium or antimony with the lead.
' With mixing apparatus heretofore employed it has been exceeding dimcult'to prevent agitation of the dross or oxide containing surface of the molten alloy in the kettle with the resulting contamination of the alloy and losses of the hardening constituent, especially when calcium is employed.
An object of the present invention is to provide an improved method of and` apparatus for elllciently and economically stirring and/or mixing materials.
In accordance with the above object, there is provided in one embodiment of the invention an improved mixing apparatus for lead alloys, comprising a melting receptacle or kettle within which a stationary horizontal baille member is axially positioned below the surface of the molten alloy in the kettle. A stationary open-ended tube or cylinder is positioned below the baille member and concentric therewith, the upper end of the tube being spaced from the lowersurface of the baille member and the lower end of the tube being spaced above the bottom of the kettle. A mechanical stirrer or mixer positioned axially within the tube is designed to cause a circulation of the alloy upwardly through the tube and against the under surface of the submerged stationary baffle member, which deflects the upwardly propelled stream of molten alloy downwardly, exteriorly of the tube, and thereby prevents agitation of the dross containing surface of the molten alloy.
A more complete understanding of the invention will be had from the following detailed description when read in conjunction with the accompanying drawingwhich shows a vertical (Cl. 26S-34) section of a mixing apparatus embodying the features of the invention.
As shown in the drawing, a lead melting and mixing receptacle or kettle I0 is provided at the bottom with the usual discharge opening I I con- 6 trolled by a valvev I2carried by a vertical shaft I3 adapted to be connected to suitable mechanism (not shown) for opening and closing the valve. The kettle is open atv the top to permit charging it with lead and other ingredients, such 10 as calcium or antimony, which are `melted with the lead by the application of heat to the kettle;
Mounted within the kettle I 0 concentrically thereof is a stationary horizontal baille member I5 in the form of a circular plate of vadiameter 15 considerably smaller than-the inside diameter of the kettle. This baille plate is positioned-an appreciable distance below the top of the kettle and the molten alloy in the kettle is constantly. maintained at such a level that the baille plate is 20 at al1-times wholly submerged below the surface of the molten alloy. A stationary vertical tube or cylinder is mounted below the baille plate and concentric therewith, the lower end of the'cylinder being suitably spaced above the bottom of 25 the kettle while the upper end of the cylinder is suitably spaced below the under surface of the baffle plate.
The baille plate and the cylinder are rigidly supported by vertical rods I1 secured to and depending from a cross bar I8 attached to the top of the kettle. Secured to the upper side of the cross bar I8 is a bracket I9 formed with a bearing portion 20 in axial alignment with the baille platey and cylinder. A vertical shaft 2| is ro- 35 tatably journaled in the bearing 20 and extends through aligned aperturesvin the cross bar and baille plate into the cylinder, terminating near the lower end of the cylinder. One or more helical blades 24 secured to the lower end of the 40 shaft 2i serve to circulate the molten materials in the kettle when the shaft is rotated by suitable means connected to the upper end thereof (not shown). The blades 24 are designed to pro-f pel a continuous stream of the moltenmaterials ,45 upwardly through the cylinder and against the stationary baille plate I5, the under surface 25 of which is flared or curved so as to deflect the stream of material downwardly and exteriorly of the cylinder. The materials are thereby thor- 50 oughly mixed without ag-itating or disturbing the oxide or dross containing surface layer A the alloy above the stationary baille plate.
It is to be understood that the invention is not limited to. the particular embodiment thereof I substantially undisturbed.
2. A method of stirring a molten metal, which comprises maintaining a body of metal in a molten'condition, causing a portion of said metal to flow upwardly from near the bottom of said body to near the upper surface thereof, deiiecting said upwardly flowing metal before it reaches the upper surface of said body and causing it to flow downwardly, and maintaining the upper surface of said body substantially undisturbed.
3. In a mixing apparatus, a receptacle for materials to be mixed, and means for circulating the materials to mix them, said means including a stationary horizontal baille member submerged below the surface of the materials for preventing agitation of the surface layer of the materials.
4. In a mixing apparatus, a receptacle for materials to be mixed, means for propelling upwardly a stream of the materials within said receptacle, and a stationary horizontal bafiie member submerged below the surface of the materlal for deilecting said stream downwardly to prevent agitation of the surface layer of the materials.
5. In an apparatus for stirring molten metal,
a receptacle for molten metal, a vertical tubular member centrally positioned within said receptacle below the surface of the metal, means for propelling a stream of the metal upwardly through said tubular member, and a stationary horizontal baille member positioned above said tubular member and below the surface of the metal for Y'deecting said stream downwardly and exteriorly of said tubular member to prevent said stream from disturbing the surfacey of the metal in any substantial manner.
6. In an apparatus for stirring molten metal, a receptacle for molten metal, a vertical tubular member centrally positioned within said receptacle with its upper end spaced below the surface of the molten metal and its lower end spaced above the bottom of said receptacle, rotary means within said tubular member for propelling a
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2594461 *||Dec 22, 1944||Apr 29, 1952||Colgate Palmolive Peet Co||Continuous soapmaking|
|US2786755 *||Aug 6, 1952||Mar 26, 1957||Dow Chemical Co||Method and apparatus for alloying magnesium|
|US2801083 *||Jan 7, 1953||Jul 30, 1957||Leslie L Balassa||Mixing device|
|US3015190 *||Oct 8, 1953||Jan 2, 1962||Cie De Saint Gobain Soc||Apparatus and method for circulating molten glass|
|US3182984 *||Apr 23, 1962||May 11, 1965||Gilbert Nathan||Amalgam mixing vessel for primary battery system|
|US3249341 *||Dec 2, 1963||May 3, 1966||American Mach & Foundry||Liquid circulators|
|US3311363 *||Oct 30, 1964||Mar 28, 1967||Aluminum Lab Ltd||Gas-liquid contact apparatus for aluminum refining by the subhalide distillation process|
|US4284360 *||Nov 5, 1979||Aug 18, 1981||Petro-Canada Exploration Inc.||Homogenizer/subsampler for tar sand process streams|
|US4328710 *||Apr 2, 1981||May 11, 1982||Petro-Canada Exploration Inc.||Homogenizer/subsampler for tar sand process streams|
|US4441824 *||Aug 8, 1983||Apr 10, 1984||Brokaw Kim C||Portable waste agitator|
|US4575256 *||Sep 19, 1983||Mar 11, 1986||Envirotech Corporation||Ragless propeller draft tube mixer|
|US4598899 *||Jul 10, 1984||Jul 8, 1986||Kennecott Corporation||Light gauge metal scrap melting system|
|US4647215 *||Mar 10, 1986||Mar 3, 1987||Envirotech Corporation||Ragless propeller draft tube mixer|
|US4745068 *||Apr 30, 1987||May 17, 1988||Eli Lilly And Company||Dispersion tool|
|US5454986 *||Aug 4, 1994||Oct 3, 1995||Lessen; Martin||Down-flow batch mixing system|
|US5944496 *||Dec 3, 1996||Aug 31, 1999||Cooper; Paul V.||Molten metal pump with a flexible coupling and cement-free metal-transfer conduit connection|
|US5951243 *||Jul 3, 1997||Sep 14, 1999||Cooper; Paul V.||Rotor bearing system for molten metal pumps|
|US6027685 *||Oct 15, 1997||Feb 22, 2000||Cooper; Paul V.||Flow-directing device for molten metal pump|
|US6303074||May 14, 1999||Oct 16, 2001||Paul V. Cooper||Mixed flow rotor for molten metal pumping device|
|US6345964||Mar 24, 1999||Feb 12, 2002||Paul V. Cooper||Molten metal pump with metal-transfer conduit molten metal pump|
|US6398402 *||Feb 11, 1998||Jun 4, 2002||Chris Thomas||Disposable disruptor agitator tool having a bladed rotor disposed in a stator|
|US6398525||Jun 8, 2000||Jun 4, 2002||Paul V. Cooper||Monolithic rotor and rigid coupling|
|US6689310||May 12, 2000||Feb 10, 2004||Paul V. Cooper||Molten metal degassing device and impellers therefor|
|US6723276||Aug 28, 2000||Apr 20, 2004||Paul V. Cooper||Scrap melter and impeller|
|US7402276||Feb 4, 2004||Jul 22, 2008||Cooper Paul V||Pump with rotating inlet|
|US7470392||Feb 4, 2004||Dec 30, 2008||Cooper Paul V||Molten metal pump components|
|US7507367||Jul 14, 2003||Mar 24, 2009||Cooper Paul V||Protective coatings for molten metal devices|
|US7731891||Jul 14, 2003||Jun 8, 2010||Cooper Paul V||Couplings for molten metal devices|
|US7906068||Feb 4, 2004||Mar 15, 2011||Cooper Paul V||Support post system for molten metal pump|
|US8075837||Jun 26, 2008||Dec 13, 2011||Cooper Paul V||Pump with rotating inlet|
|US8110141||Jun 26, 2008||Feb 7, 2012||Cooper Paul V||Pump with rotating inlet|
|US8178037||May 13, 2008||May 15, 2012||Cooper Paul V||System for releasing gas into molten metal|
|US8337746||Dec 25, 2012||Cooper Paul V||Transferring molten metal from one structure to another|
|US8361379||Feb 27, 2009||Jan 29, 2013||Cooper Paul V||Gas transfer foot|
|US8366993||Aug 9, 2010||Feb 5, 2013||Cooper Paul V||System and method for degassing molten metal|
|US8409495||Oct 3, 2011||Apr 2, 2013||Paul V. Cooper||Rotor with inlet perimeters|
|US8440135||May 13, 2008||May 14, 2013||Paul V. Cooper||System for releasing gas into molten metal|
|US8444911||Aug 9, 2010||May 21, 2013||Paul V. Cooper||Shaft and post tensioning device|
|US8449814||Aug 9, 2010||May 28, 2013||Paul V. Cooper||Systems and methods for melting scrap metal|
|US8475708||Mar 14, 2011||Jul 2, 2013||Paul V. Cooper||Support post clamps for molten metal pumps|
|US8501084||Mar 14, 2011||Aug 6, 2013||Paul V. Cooper||Support posts for molten metal pumps|
|US8524146||Sep 9, 2010||Sep 3, 2013||Paul V. Cooper||Rotary degassers and components therefor|
|US8529828||Nov 4, 2008||Sep 10, 2013||Paul V. Cooper||Molten metal pump components|
|US8535603||Aug 9, 2010||Sep 17, 2013||Paul V. Cooper||Rotary degasser and rotor therefor|
|US8613884||May 12, 2011||Dec 24, 2013||Paul V. Cooper||Launder transfer insert and system|
|US8714914||Sep 8, 2010||May 6, 2014||Paul V. Cooper||Molten metal pump filter|
|US8753563||Jan 31, 2013||Jun 17, 2014||Paul V. Cooper||System and method for degassing molten metal|
|US9011761||Mar 14, 2013||Apr 21, 2015||Paul V. Cooper||Ladle with transfer conduit|
|US9017597||Mar 12, 2013||Apr 28, 2015||Paul V. Cooper||Transferring molten metal using non-gravity assist launder|
|US9034244||Jan 28, 2013||May 19, 2015||Paul V. Cooper||Gas-transfer foot|
|US9080577||Mar 8, 2013||Jul 14, 2015||Paul V. Cooper||Shaft and post tensioning device|
|US9108244||Sep 10, 2010||Aug 18, 2015||Paul V. Cooper||Immersion heater for molten metal|
|US9156087||Mar 13, 2013||Oct 13, 2015||Molten Metal Equipment Innovations, Llc||Molten metal transfer system and rotor|
|US9205490||Mar 13, 2013||Dec 8, 2015||Molten Metal Equipment Innovations, Llc||Transfer well system and method for making same|
|US20040076533 *||Jul 14, 2003||Apr 22, 2004||Cooper Paul V.||Couplings for molten metal devices|
|US20040115079 *||Jul 14, 2003||Jun 17, 2004||Cooper Paul V.||Protective coatings for molten metal devices|
|US20040262825 *||Apr 19, 2004||Dec 30, 2004||Cooper Paul V.||Scrap melter and impeller therefore|
|US20050013713 *||Feb 4, 2004||Jan 20, 2005||Cooper Paul V.||Pump with rotating inlet|
|US20050013715 *||Feb 4, 2004||Jan 20, 2005||Cooper Paul V.||System for releasing gas into molten metal|
|US20080211147 *||May 13, 2008||Sep 4, 2008||Cooper Paul V||System for releasing gas into molten metal|
|US20080230966 *||Apr 29, 2008||Sep 25, 2008||Cooper Paul V||Scrap melter and impeller therefore|
|US20090140013 *||Feb 11, 2009||Jun 4, 2009||Cooper Paul V||Protective coatings for molten metal devices|
|US20100008180 *||Jun 26, 2007||Jan 14, 2010||Soren Friis Krogh||Apparatus for dissolving solid particles and liquid substances in a liquid|
|U.S. Classification||366/266, 266/235, 75/708, 266/236, 366/302|
|International Classification||B22D43/00, F27B14/00|
|Cooperative Classification||B22D43/00, F27B14/00|
|European Classification||B22D43/00, F27B14/00|