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Publication numberUS2038221 A
Publication typeGrant
Publication dateApr 21, 1936
Filing dateJan 10, 1935
Priority dateJan 10, 1935
Publication numberUS 2038221 A, US 2038221A, US-A-2038221, US2038221 A, US2038221A
InventorsWalter W Kagi
Original AssigneeWestern Electric Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of and apparatus for stirring materials
US 2038221 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

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

6 Claims.

'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

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2594461 *Dec 22, 1944Apr 29, 1952Colgate Palmolive Peet CoContinuous soapmaking
US2786755 *Aug 6, 1952Mar 26, 1957Dow Chemical CoMethod and apparatus for alloying magnesium
US2801083 *Jan 7, 1953Jul 30, 1957Leslie L BalassaMixing device
US3015190 *Oct 8, 1953Jan 2, 1962Cie De Saint Gobain SocApparatus and method for circulating molten glass
US3182984 *Apr 23, 1962May 11, 1965Gilbert NathanAmalgam mixing vessel for primary battery system
US3249341 *Dec 2, 1963May 3, 1966American Mach & FoundryLiquid circulators
US3311363 *Oct 30, 1964Mar 28, 1967Aluminum Lab LtdGas-liquid contact apparatus for aluminum refining by the subhalide distillation process
US4284360 *Nov 5, 1979Aug 18, 1981Petro-Canada Exploration Inc.Homogenizer/subsampler for tar sand process streams
US4328710 *Apr 2, 1981May 11, 1982Petro-Canada Exploration Inc.Homogenizer/subsampler for tar sand process streams
US4441824 *Aug 8, 1983Apr 10, 1984Brokaw Kim CPortable waste agitator
US4575256 *Sep 19, 1983Mar 11, 1986Envirotech CorporationRagless propeller draft tube mixer
US4598899 *Jul 10, 1984Jul 8, 1986Kennecott CorporationLight gauge metal scrap melting system
US4647215 *Mar 10, 1986Mar 3, 1987Envirotech CorporationRagless propeller draft tube mixer
US4745068 *Apr 30, 1987May 17, 1988Eli Lilly And CompanyDispersion tool
US5454986 *Aug 4, 1994Oct 3, 1995Lessen; MartinDown-flow batch mixing system
US5944496 *Dec 3, 1996Aug 31, 1999Cooper; Paul V.Molten metal pump with a flexible coupling and cement-free metal-transfer conduit connection
US5951243 *Jul 3, 1997Sep 14, 1999Cooper; Paul V.Rotor bearing system for molten metal pumps
US6027685 *Oct 15, 1997Feb 22, 2000Cooper; Paul V.Flow-directing device for molten metal pump
US6303074May 14, 1999Oct 16, 2001Paul V. CooperMixed flow rotor for molten metal pumping device
US6345964Mar 24, 1999Feb 12, 2002Paul V. CooperMolten metal pump with metal-transfer conduit molten metal pump
US6398402 *Feb 11, 1998Jun 4, 2002Chris ThomasDisposable disruptor agitator tool having a bladed rotor disposed in a stator
US6398525Jun 8, 2000Jun 4, 2002Paul V. CooperMonolithic rotor and rigid coupling
US6689310May 12, 2000Feb 10, 2004Paul V. CooperMolten metal degassing device and impellers therefor
US6723276Aug 28, 2000Apr 20, 2004Paul V. CooperScrap melter and impeller
US7402276Feb 4, 2004Jul 22, 2008Cooper Paul VPump with rotating inlet
US7470392Feb 4, 2004Dec 30, 2008Cooper Paul VMolten metal pump components
US7507367Jul 14, 2003Mar 24, 2009Cooper Paul VProtective coatings for molten metal devices
US7731891Jul 14, 2003Jun 8, 2010Cooper Paul VCouplings for molten metal devices
US7906068Feb 4, 2004Mar 15, 2011Cooper Paul VSupport post system for molten metal pump
US8075837Jun 26, 2008Dec 13, 2011Cooper Paul VPump with rotating inlet
US8110141Jun 26, 2008Feb 7, 2012Cooper Paul VPump with rotating inlet
US8178037May 13, 2008May 15, 2012Cooper Paul VSystem for releasing gas into molten metal
US8337746Dec 25, 2012Cooper Paul VTransferring molten metal from one structure to another
US8361379Feb 27, 2009Jan 29, 2013Cooper Paul VGas transfer foot
US8366993Aug 9, 2010Feb 5, 2013Cooper Paul VSystem and method for degassing molten metal
US8409495Oct 3, 2011Apr 2, 2013Paul V. CooperRotor with inlet perimeters
US8440135May 13, 2008May 14, 2013Paul V. CooperSystem for releasing gas into molten metal
US8444911Aug 9, 2010May 21, 2013Paul V. CooperShaft and post tensioning device
US8449814Aug 9, 2010May 28, 2013Paul V. CooperSystems and methods for melting scrap metal
US8475708Mar 14, 2011Jul 2, 2013Paul V. CooperSupport post clamps for molten metal pumps
US8501084Mar 14, 2011Aug 6, 2013Paul V. CooperSupport posts for molten metal pumps
US8524146Sep 9, 2010Sep 3, 2013Paul V. CooperRotary degassers and components therefor
US8529828Nov 4, 2008Sep 10, 2013Paul V. CooperMolten metal pump components
US8535603Aug 9, 2010Sep 17, 2013Paul V. CooperRotary degasser and rotor therefor
US8613884May 12, 2011Dec 24, 2013Paul V. CooperLaunder transfer insert and system
US8714914Sep 8, 2010May 6, 2014Paul V. CooperMolten metal pump filter
US8753563Jan 31, 2013Jun 17, 2014Paul V. CooperSystem and method for degassing molten metal
US9011761Mar 14, 2013Apr 21, 2015Paul V. CooperLadle with transfer conduit
US9017597Mar 12, 2013Apr 28, 2015Paul V. CooperTransferring molten metal using non-gravity assist launder
US9034244Jan 28, 2013May 19, 2015Paul V. CooperGas-transfer foot
US9080577Mar 8, 2013Jul 14, 2015Paul V. CooperShaft and post tensioning device
US9108244Sep 10, 2010Aug 18, 2015Paul V. CooperImmersion heater for molten metal
US9156087Mar 13, 2013Oct 13, 2015Molten Metal Equipment Innovations, LlcMolten metal transfer system and rotor
US9205490Mar 13, 2013Dec 8, 2015Molten Metal Equipment Innovations, LlcTransfer well system and method for making same
US20040076533 *Jul 14, 2003Apr 22, 2004Cooper Paul V.Couplings for molten metal devices
US20040115079 *Jul 14, 2003Jun 17, 2004Cooper Paul V.Protective coatings for molten metal devices
US20040262825 *Apr 19, 2004Dec 30, 2004Cooper Paul V.Scrap melter and impeller therefore
US20050013713 *Feb 4, 2004Jan 20, 2005Cooper Paul V.Pump with rotating inlet
US20050013715 *Feb 4, 2004Jan 20, 2005Cooper Paul V.System for releasing gas into molten metal
US20080211147 *May 13, 2008Sep 4, 2008Cooper Paul VSystem for releasing gas into molten metal
US20080230966 *Apr 29, 2008Sep 25, 2008Cooper Paul VScrap melter and impeller therefore
US20090140013 *Feb 11, 2009Jun 4, 2009Cooper Paul VProtective coatings for molten metal devices
US20100008180 *Jun 26, 2007Jan 14, 2010Soren Friis KroghApparatus for dissolving solid particles and liquid substances in a liquid
Classifications
U.S. Classification366/266, 266/235, 75/708, 266/236, 366/302
International ClassificationB22D43/00, F27B14/00
Cooperative ClassificationB22D43/00, F27B14/00
European ClassificationB22D43/00, F27B14/00