EP0381635A1 - Tachmischer - Google Patents

Tachmischer Download PDF

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Publication number
EP0381635A1
EP0381635A1 EP90850003A EP90850003A EP0381635A1 EP 0381635 A1 EP0381635 A1 EP 0381635A1 EP 90850003 A EP90850003 A EP 90850003A EP 90850003 A EP90850003 A EP 90850003A EP 0381635 A1 EP0381635 A1 EP 0381635A1
Authority
EP
European Patent Office
Prior art keywords
guide tube
vessel
motor
agitator
secured
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.)
Withdrawn
Application number
EP90850003A
Other languages
English (en)
French (fr)
Inventor
Fred Koch
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.)
Xylem Water Solutions AB
Original Assignee
Flygt AB
ITT Flygt AB
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 Flygt AB, ITT Flygt AB filed Critical Flygt AB
Publication of EP0381635A1 publication Critical patent/EP0381635A1/de
Withdrawn legal-status Critical Current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
    • B01F27/25—Mixers with both stirrer and drive unit submerged in the material being mixed
    • B01F27/251—Vertical beam constructions therefor

Definitions

  • Agitators are used in process engineering and sewage treatment plant for the circulation and transport of bulk fluids and for for the mechanical agitation of sludge particles.
  • a particularly suitable means of circulating bulk fluids is the use of submerged-motor agitators that have a motor driven propeller and that work completely immmersed in the fluid.
  • Submerged-motor agitators thoroughly distribute sludge par­ticles, gases and other substances throughout the entire con­tent of the vessel since the very considerable impulse forces transmitted with a low application of energy by the propeller hydraulics thoroughly intermix the suspension.
  • the agitator needs to be installed as nearly horizontal as possible and in order to achieve this, the submerged-motor agitator is mounted on a guide tube that is secured to the bottom of the vessel. Because of the considerable thrust generated by the propeller, it is necessary for the guide tube to be of very strong construction. Submerged-motor agitators of the prior art therefore have an additional guide tube secured to the upper edge of the vessel.
  • the submerged-motor agitator may be located more towards the centre of the vessel in which case use is made of a bridge, stretching across the vessel, to which the upper end of the guide tube is secured.
  • a bridge has to be provided solely for the purpose of securing the upper end of the guide tube, which adds considerably to the cost, or in the case of ves­sels already having a bridge provided for other purposes, that use of the submerged-motor agitator is severely limi­ted if not impossible, and will at least be extremely com­plicated.
  • Bridges of this nature are generally rotating bridges so that before they can be used for their original purpose the submerged-motor agitator has to be withdrawn from the vessel or at least be raised sufficiently from the bottom of the vessel for it to be possible to rotate the bridge.
  • the submerged-motor agitator for mixing and sludge acti­vation vessels that is the subject of the invention, having the characterizing features detailed in the main claim, has the advantage over such units that the agitator can be lo­cated in any desired position within the vessel and at any desired height above the bottom of the vessel.
  • Secure holding of the submerged-motor agitator is ensured by the special arrangement of the guide tube with its two supports directed downwards and secured to the bottom of the vessel.
  • the design of the guide tube as covered by the invention has the additional advantage that the considerable reaction force transmitted from the submerged-motor agitator is ab­sorbed by the two supports that are inclined downwards from the agitator towards the bottom of the vessel.
  • a further advantage is the simple and inexpensive design and mounting of the submerged-motor agitator in accordance with the invention with the guide tube being secured only to the bottom of the vessel.
  • a further advantage is that the submerged-motor agitator in accordance with the invention, with the guide tube fastened only to the bottom of the vessel, is that it can also be used in conjunction with a rotating bridge. There is no need for the submerged-motor agitator to be withdrawn from or lifted out of the vessel when the rotating bridge is in operation.
  • Raising or removing the agitator for servicing can be effected without difficulty by means of a conventional lifting derrick and thus use of a submerged-motor agitator in accordance with the invention is particularly advan­tageous in the case of vessels that are not only filled occasionally, such for example as sludge activation ves­sels, since such vessels cannot be entered for the perfor­mance of servicing operations.
  • FIG. 1 The side view of the submerged-motor agitator illustrated in Fig. 1 shows, secured to the bottom 1 of a vessel, a vertical guide tube 2 on which the agitator 3, comprising a motor 4 and propeller 5, is carried and can be slid.
  • the agitator rests form locking on a support arm 7 that is secured to the guide tube 2 and supported by a strut 6 at at least such a distance from the bottom 1 of the vessel that the propeller 5 is able to rotate freely.
  • a support arm 7 that is secured to the guide tube 2 and supported by a strut 6 at at least such a distance from the bottom 1 of the vessel that the propeller 5 is able to rotate freely.
  • two struts 8, 9 are similarly secured at one end to the guide tube 2.
  • the two struts are set to slope downwards each at an acute angle relative to the guide tube 2 and approximately at a right angle to one another, to have their oposite ends secured to the bottom 1 of the vessel.
  • the mechanism for raising and lowering is not shown.
  • Fig. 2 illustrates the angular relationship between the two struts 8, 9 and the support arm 7 in a projection to a level vertical to the guide tube.
  • the angle between the two struts 8, 9 should preferably be around 90° and that be­tween the support arm 7 and each of the two struts 8, 9 should preferably be around 135°.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP90850003A 1989-01-11 1990-01-03 Tachmischer Withdrawn EP0381635A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3900630 1989-01-11
DE3900630A DE3900630A1 (de) 1989-01-11 1989-01-11 Tauchmotorruehrwerk fuer misch- und belebungsbecken

Publications (1)

Publication Number Publication Date
EP0381635A1 true EP0381635A1 (de) 1990-08-08

Family

ID=6371877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90850003A Withdrawn EP0381635A1 (de) 1989-01-11 1990-01-03 Tachmischer

Country Status (4)

Country Link
EP (1) EP0381635A1 (de)
JP (1) JPH02229536A (de)
AU (1) AU619625B2 (de)
DE (1) DE3900630A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003028870A1 (de) * 2001-09-24 2003-04-10 Ksb Aktiengesellschaft Misch- oder rührvorrichtung für behälter

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4112511A1 (de) * 1991-04-17 1992-10-22 Itt Flygt Pumpen Gmbh Tauchmotorruehrwerk zum umwaelzen von fluessigkeiten, insbesondere von abwasser in belebungsgraeben
DE19620986C1 (de) * 1996-05-24 1997-09-25 Abs Pump Center Gmbh Einhängevorrichtung
JP2003034977A (ja) * 2001-07-25 2003-02-07 Torishima Pump Mfg Co Ltd マンホールポンプ機場の撹拌装置とマンホールポンプの起動、停止方法
DE102008050136A1 (de) 2008-10-04 2010-04-29 Ksb Aktiengesellschaft Rührwerksständer
JP5230340B2 (ja) * 2008-10-08 2013-07-10 新明和工業株式会社 水中ミキサ据付装置
CN104787870B (zh) * 2015-04-09 2017-05-17 合肥工业大学 一种潜水推流器及其安装方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2110550A (en) * 1981-11-20 1983-06-22 Beardmore And Sons Limited R T Treatment of effluent
DE3420094A1 (de) * 1984-05-29 1985-12-05 Südstall GmbH, 8264 Waldkraiburg Propellerruehrwerk
DE3427584A1 (de) * 1984-07-26 1986-02-06 Franz Eisele & Soehne Gmbh & C Injektoreinrichtung
US4581182A (en) * 1985-02-21 1986-04-08 Air-O-Lator Corporation Submersible mixer with air injection

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1833037U (de) * 1960-11-24 1961-06-15 Eduard Mayer Fussplatte fuer drehbare jaucheruehrwerke mit liegender arbeitswelle.
DE8336906U1 (de) * 1983-12-23 1984-03-15 Börger, Alois, 4280 Borken In einem behaelter stationaer anzuordnende ruehrvorrichtung fuer eine fluessigkeit, insbesondere guelle
DE8416466U1 (de) * 1984-05-29 1987-08-13 Südstall GmbH, 8264 Waldkraiburg Propellerrührwerk

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2110550A (en) * 1981-11-20 1983-06-22 Beardmore And Sons Limited R T Treatment of effluent
DE3420094A1 (de) * 1984-05-29 1985-12-05 Südstall GmbH, 8264 Waldkraiburg Propellerruehrwerk
DE3427584A1 (de) * 1984-07-26 1986-02-06 Franz Eisele & Soehne Gmbh & C Injektoreinrichtung
US4581182A (en) * 1985-02-21 1986-04-08 Air-O-Lator Corporation Submersible mixer with air injection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003028870A1 (de) * 2001-09-24 2003-04-10 Ksb Aktiengesellschaft Misch- oder rührvorrichtung für behälter

Also Published As

Publication number Publication date
DE3900630A1 (de) 1990-07-12
AU619625B2 (en) 1992-01-30
DE3900630C2 (de) 1993-06-09
AU4549489A (en) 1990-07-19
JPH02229536A (ja) 1990-09-12

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