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US3488038A - Stirrer - Google Patents

Stirrer Download PDF

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Publication number
US3488038A
US3488038A US720907A US3488038DA US3488038A US 3488038 A US3488038 A US 3488038A US 720907 A US720907 A US 720907A US 3488038D A US3488038D A US 3488038DA US 3488038 A US3488038 A US 3488038A
Authority
US
United States
Prior art keywords
shaft
flow
stirrer
propeller
guiding body
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
Application number
US720907A
Other languages
English (en)
Inventor
Gustaf Adolf Staaf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3488038A publication Critical patent/US3488038A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/91—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with propellers
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/04—Indoles; Hydrogenated indoles
    • C07D209/10—Indoles; Hydrogenated indoles with substituted hydrocarbon radicals attached to carbon atoms of the hetero ring
    • C07D209/18—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D209/26—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals with an acyl radical attached to the ring nitrogen atom
    • 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
    • B01F27/15—Stirrers with tubes for guiding the material

Definitions

  • a stirrer includes a rotating shaft having an axial-flow type propeller secured thereto.
  • a flow-guiding body is carried by the shaft downstream of the propeller and is interconnected with the shaft to transfer axial forces to the shaft opposing the'force of reaction of the propeller to reduce the axial thrust to be carried by an associated shaft bearing.
  • the present invention has for its object to provide for such improvements in a stirrer comprising an impeller in the form of a propeller as to minimize the thrust or compressive forces to which the impeller shaft is subjected in operation to thereby reduce the cost of manufacture of the impellershaft and, its bearing means.
  • a stirrer for liquid fluids comprising: an axial-flow propeller secured to a rotary shaft is mainly characterized in that the impeller shaft carries at the downstream side of the propeller a flow-guiding body adapted to divert the initially axial liquid flow radially -.away from the shaft. thereby causing the propeller shaft to be subjected-in addition to a resultant axially directed force of reaction from the propeller-also to an qppositely directed force of reaction from said flow-guiding body, thereby reducing the axial thrust to be carried by the shaft-bearing means.
  • FIGURE 1 in a vertical cross-sectional view, illustrates a preferred embodiment thereof
  • FIGURE 2 on a larger scale, shows the bottom-end portion of the stirrer shaft carrying the propeller and v flow-guiding body
  • a flowguiding body 19 Beneath the propeller there is secured to this shaft, in accordance with the present invention, a flowguiding body 19.
  • This flow guide 19 is shaped as a body of revolution having a concavely curved generatrix and serves for diverting in a radially outward direction the vertically downward-directed liquid flow from the propeller.
  • Mounted on the interior surface of the side wall of the container 11 are a plurality of suppressor vanes 20 projecting radially inward in vertical planes, respectively.
  • FIGURE 2 The forces created during rotation of the stirrer are illustrated in FIGURE 2.
  • the blades of the -propeller 18 are subjected to upwardly directed forces of reaction 22, which may be added to each other to form an upwardly directed resultant force 23 along the central axis of the shaft.
  • the initially vertical fluid flow will be diverted by the flow guide 19 into radial directions, as indicated by arrows 21, and as a result of this the flow guide will be subjected to forces of reaction having downwardly directed components 24 the resultant sum of-which, 25,
  • the resultant force to which the shaft is subjected will be upwardly directed and constituted by the force 23 less the force 25.
  • the flow-guiding body 19 need not necessarily provide a continuously curved guiding. surface for the liquid flow.
  • the flow guide 19. is composed of a plurality of truncated cones 26, 27, 28 and a circular disc 29 projecting radially relative to the shaft.
  • FIGURE 4 shows a flow guide 19 which is composed of one truncated cone 30 and a circular end disc 31. The flow guide need not rotate together with the shaft but could instead be carried rotatably by the same.
  • a stirrer for liquids comprising a rotary operating shaft, an axial-flow type propeller secured to such shaft, a flow-guiding body carried by said shaft at the downstream side of the propeller andbeing adapted to divert the initially axial liquid flow radially away from the shaft.
  • said flow-guiding body being interconnected with said shaft to transfer axially directed forces thereto thereby causing the shaft to be subjected to aforce of reaction from said flow-guiding body which is oppositely directed to the axially directed force of reaction from the propeller to thereby reduce the axial thrust to be carried by an associated shaft-bearing means.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
US720907A 1967-04-25 1968-04-12 Stirrer Expired - Lifetime US3488038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE5848/67A SE302290B (xx) 1967-04-25 1967-04-25

Publications (1)

Publication Number Publication Date
US3488038A true US3488038A (en) 1970-01-06

Family

ID=20267367

Family Applications (1)

Application Number Title Priority Date Filing Date
US720907A Expired - Lifetime US3488038A (en) 1967-04-25 1968-04-12 Stirrer

Country Status (11)

Country Link
US (1) US3488038A (xx)
AT (1) AT280961B (xx)
BE (1) BE714109A (xx)
CH (1) CH462113A (xx)
DE (1) DE1757113B1 (xx)
FI (1) FI54236C (xx)
FR (1) FR1563371A (xx)
GB (1) GB1220113A (xx)
NL (1) NL6805772A (xx)
NO (1) NO117590B (xx)
SE (1) SE302290B (xx)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685806A (en) * 1968-10-07 1972-08-22 Fritz Schoppe Method of stirring materials and apparatus therefor
US3934860A (en) * 1972-04-13 1976-01-27 Homburg B.V. Apparatus for the treatment of meat products
US4014526A (en) * 1976-04-26 1977-03-29 Cramer Jr Roy A Liquid moving and mixing apparatus
US4431597A (en) * 1982-09-29 1984-02-14 Air-O-Lator Corporation Horizontal mixing aerator
US4577975A (en) * 1984-05-09 1986-03-25 Carl Mccrory Enterprises, Inc. Mixing and blending apparatus
US4614439A (en) * 1984-07-06 1986-09-30 Pilkington Brothers P.L.C. Mixer for mixing fibres into a slurry
US5030256A (en) * 1990-03-15 1991-07-09 Lingle Thomas A Automotive air filter construction
US5118199A (en) * 1991-04-03 1992-06-02 General Signal Corporation Side entry mixer apparatus
US5454986A (en) * 1994-08-04 1995-10-03 Lessen; Martin Down-flow batch mixing system
US6565321B1 (en) * 1999-05-21 2003-05-20 Vortex Holding Company Vortex attractor
US6729839B1 (en) * 1999-05-21 2004-05-04 Vortex Holding Company Toroidal and compound vortex attractor
US20100008180A1 (en) * 2006-07-03 2010-01-14 Soren Friis Krogh Apparatus for dissolving solid particles and liquid substances in a liquid
US9883684B1 (en) * 2016-09-28 2018-02-06 Lingyu Dong Method and system of stirring liquid form material

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2429255A1 (de) * 1974-06-19 1976-01-08 Eszakmagyar Vegyimuevek Agitatoren zur intensivierung von transportprozessen und ihre anwendung zur herbeifuehrung eines kontinuierlichen ablaufes von heterogenen chemischen reaktionen
US4457627A (en) * 1982-04-05 1984-07-03 Kirby Robert E Circular containment system for well drilling fluid
EP0306280A1 (en) * 1987-09-01 1989-03-08 Mixtec Investments Cc Impeller mixers
DE3934175C1 (en) * 1989-10-13 1991-05-02 Procter & Gamble Gmbh, 6231 Schwalbach, De Solid raw material melting appts. for perfumes mfr. - has container arranged inside microwave chamber and combined with stirrer
DE9106639U1 (de) * 1991-05-30 1991-09-05 Bischof, Franz, Dipl.-Ing., 8500 Nuernberg Hyperboloid-Rühr- und Begasungssystem zum Rühren, Mischen und Begasen in ein- oder mehrphasigen Fluiden
US20140036618A1 (en) * 2011-02-11 2014-02-06 Veolia Water Solutions & Technologies Support Device for bringing a liquid species into contact with a growing particulate solid species

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1430362A (en) * 1922-02-02 1922-09-26 William G Devereux Agitator for liquid materials
US2346366A (en) * 1941-12-29 1944-04-11 Lewis H Durdin Mechanical aerator
US2421191A (en) * 1944-02-02 1947-05-27 Lewis H Durdin Mechanical aerating device
US2464588A (en) * 1945-08-03 1949-03-15 Pittsburgh Plate Glass Co Machine for dispersing agglomerated pigments in liquids

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE505793C (de) * 1928-05-20 1930-08-25 Schuy Nachf Akt Ges G Verfahren und Vorrichtung zum Mischen von Gasen und Daempfen mit Fluessigkeiten
DE909091C (de) * 1950-03-04 1954-04-12 Sommer Schmidding Werke Vertri Kreiselmischer
US3170638A (en) * 1963-04-12 1965-02-23 Linwood P Burton Mixing and disintegrating head

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1430362A (en) * 1922-02-02 1922-09-26 William G Devereux Agitator for liquid materials
US2346366A (en) * 1941-12-29 1944-04-11 Lewis H Durdin Mechanical aerator
US2421191A (en) * 1944-02-02 1947-05-27 Lewis H Durdin Mechanical aerating device
US2464588A (en) * 1945-08-03 1949-03-15 Pittsburgh Plate Glass Co Machine for dispersing agglomerated pigments in liquids

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685806A (en) * 1968-10-07 1972-08-22 Fritz Schoppe Method of stirring materials and apparatus therefor
US3934860A (en) * 1972-04-13 1976-01-27 Homburg B.V. Apparatus for the treatment of meat products
US4014526A (en) * 1976-04-26 1977-03-29 Cramer Jr Roy A Liquid moving and mixing apparatus
US4431597A (en) * 1982-09-29 1984-02-14 Air-O-Lator Corporation Horizontal mixing aerator
US4577975A (en) * 1984-05-09 1986-03-25 Carl Mccrory Enterprises, Inc. Mixing and blending apparatus
US4614439A (en) * 1984-07-06 1986-09-30 Pilkington Brothers P.L.C. Mixer for mixing fibres into a slurry
US5030256A (en) * 1990-03-15 1991-07-09 Lingle Thomas A Automotive air filter construction
US5118199A (en) * 1991-04-03 1992-06-02 General Signal Corporation Side entry mixer apparatus
US5454986A (en) * 1994-08-04 1995-10-03 Lessen; Martin Down-flow batch mixing system
US6565321B1 (en) * 1999-05-21 2003-05-20 Vortex Holding Company Vortex attractor
US6729839B1 (en) * 1999-05-21 2004-05-04 Vortex Holding Company Toroidal and compound vortex attractor
US20100008180A1 (en) * 2006-07-03 2010-01-14 Soren Friis Krogh Apparatus for dissolving solid particles and liquid substances in a liquid
US9883684B1 (en) * 2016-09-28 2018-02-06 Lingyu Dong Method and system of stirring liquid form material
CN107866166A (zh) * 2016-09-28 2018-04-03 董令玉 液态材料搅拌系统及方法
CN107866166B (zh) * 2016-09-28 2024-05-03 董令玉 液态材料搅拌系统及方法

Also Published As

Publication number Publication date
AT280961B (de) 1970-05-11
CH462113A (de) 1968-09-15
FI54236B (fi) 1978-07-31
FI54236C (fi) 1978-11-10
NL6805772A (xx) 1968-10-28
NO117590B (xx) 1969-09-01
SE302290B (xx) 1968-07-15
BE714109A (xx) 1968-09-16
GB1220113A (en) 1971-01-20
DE1757113B1 (de) 1971-10-21
FR1563371A (xx) 1969-04-11

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