EP0144850A2 - Agitateur - Google Patents

Agitateur Download PDF

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Publication number
EP0144850A2
EP0144850A2 EP84113989A EP84113989A EP0144850A2 EP 0144850 A2 EP0144850 A2 EP 0144850A2 EP 84113989 A EP84113989 A EP 84113989A EP 84113989 A EP84113989 A EP 84113989A EP 0144850 A2 EP0144850 A2 EP 0144850A2
Authority
EP
European Patent Office
Prior art keywords
medium
bearings
diving bell
shaft
coupling
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Withdrawn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
EP84113989A
Other languages
German (de)
English (en)
Other versions
EP0144850A3 (fr
Inventor
Herbert Dr.-Ing. Jekat
Rainer Junghanns
Walter Ing. Geng
Vagn Ing. Petersen
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.)
Ekato Industrieanlagen Verwaltungs GmbH and Co
Original Assignee
Ekato Industrieanlagen Verwaltungs GmbH and Co
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 Ekato Industrieanlagen Verwaltungs GmbH and Co filed Critical Ekato Industrieanlagen Verwaltungs GmbH and Co
Publication of EP0144850A2 publication Critical patent/EP0144850A2/fr
Publication of EP0144850A3 publication Critical patent/EP0144850A3/fr
Withdrawn legal-status Critical Current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
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/86—Mixing heads comprising a driven stirrer

Definitions

  • the invention relates to an agitator for stirring liquid media, with a shaft that can be driven by a motor and with stirring blades seated thereon, bearings for the shaft and a coupling between the motor and shaft, in particular for use in a state completely immersed in the medium.
  • Agitators of the aforementioned type are used, inter alia, in off-shore operation when extracting mineral oil, e.g. used on tankers.
  • the medium to be stirred is oil in this case, but it can also be water or another liquid.
  • the agitator usually works in a state that is completely immersed in the medium to be agitated, whereby the bearings of the agitator shaft, the drive motor and the coupling between the motor and agitator shaft are below the liquid level. It is therefore necessary to take precautions when using this method of operation so that the medium and the bearings in particular are not damaged.
  • the invention is therefore based on the object of developing an agitator of the type mentioned at the outset so that the medium to be agitated has no access to the bearings and the coupling of the agitator.
  • the bearings and the coupling are arranged in a diving bell in a manner protected from the medium.
  • the diving bell is preferably filled with a gas, in particular air, under appropriate pressure in order to substantially prevent the medium from penetrating into the diving bell.
  • gas can be supplied to the diving bell via a line connected to it in order to maintain a gas cushion in its interior.
  • the medium in the diving bell to a predetermined height but at a sufficient distance from the bearings and the Clutch can rise;
  • floats are arranged in the lower part of the diving bell, which float with the medium penetrating the diving bell and at least cover its liquid level.
  • the space inside the diving bell, in which the bearings and the coupling are installed is essentially provided with a plastic filling in order to keep the gas volume small.
  • a centrifugal disc is expediently arranged on the shaft at a predetermined distance from the lower end of the diving bell, through which particles of sediment that have penetrated into the diving bell and sedimented with the medium are conveyed to the outside and thrown off in order to avoid contamination of the lower diving bell chamber.
  • the lower end of the diving bell can be designed conically towards the stirring shaft with a predetermined gap between the diving bell passage opening and the outer periphery of the stirring shaft, through which the solid particles which have penetrated into the diving bell and sedimented with the medium are conveyed to the outside and be thrown out.
  • a sealing ring e.g. a Simmerring or a mechanical seal
  • the space in the diving bell, into which the bearings and the coupling are installed is expediently filled with oil in order to lubricate the mechanical seal.
  • connection opening can be provided in this case between the installation space filled with Ul and the outside of the diving bell, into which, however, a suitable sieve or frit is installed in order to prevent solids and in particular dirt particles.
  • Fig. 1 shows a container 66, e.g. a tank of a tanker that is filled with a liquid, e.g. Ul, is filled, the mirror is designated by 26.
  • a container 66 e.g. a tank of a tanker that is filled with a liquid, e.g. Ul, is filled, the mirror is designated by 26.
  • An agitator 10 is completely in this liquid, i.e. immersed in the medium to be stirred, all parts of the agitator being located below the liquid level 26.
  • the agitator 10 consists of a shaft 12 on which a plurality of agitator blades 14 are fixedly mounted.
  • the upper end of the shaft 12, which is not visible in FIG. 1, is mounted in a diving bell 16 and is connected via a coupling likewise accommodated in the diving bell to a drive motor 18 which is flanged to the upper end of the diving bell 16.
  • Motor 18 may be an electric motor or a fluid powered motor, e.g. a hydraulic motor, and it is provided with connecting lines 20 for the supply of energy.
  • the diving bell 16 is equipped with a flange 22 which is supported on and firmly connected to supports 24, which in turn are supported on and connected to brackets 68 which e.g. are attached to the inner wall of the container 66.
  • Fig. 2 shows an enlarged section of the diving bell 16.
  • the diving bell 16 consists of a substantially elongated, hollow cylindrical housing 28 made of a suitable stable material, for example steel, possibly stainless steel, the flange 22 being integrally formed on the housing 28, such as shown, or is firmly connected to it.
  • the motor 18 is below Interposition of a seal 30, which can be formed, for example, in the form of an O-ring, flanged.
  • a stub shaft 32 of the motor 18 projects into the housing 28.
  • the upper end of the shaft 12 in FIG. 2 is connected in a rotationally fixed manner to the shaft stub 32 by means of a coupling 34, which can be designed in any suitable known manner.
  • the shaft 12 is rotatably mounted in two bearings 36, 38 mounted at an axial distance from one another in the housing 28, the bearing 38 being a radial bearing in the illustrated embodiment, while the bearing 36 is a combined radial and axial bearing. Both bearings are expediently roller bearings.
  • the installation space of the bearings and the coupling i.e. the interior of the housing 28 between the motor 18 and the lower bearing 38, insofar as it is not occupied by the bearings of the clutch, the shaft 12 and the stub shaft 32, is filled with a plastic 40 to, as will be explained, the air volume to keep the installation space as small as possible.
  • the plastic filling 40 has of the rotating parts, i.e. sufficient distance from the shaft 12 and the coupling 34 so as not to impede the rotation of these parts.
  • the lower part of the housing 28 below the bearing 38 forms a gas space 44 into which a gas, in particular air, can be introduced periodically or continuously via a pipe 46 into which a check valve 48 is installed.
  • the housing 28 is not completely closed at the bottom towards the medium to be stirred, but a defined gap 56 or 58 is provided. Through this gap 56 or 58, the medium can penetrate into the gas space 44 of the housing 28 up to a predetermined permissible height and the liquid level of this medium which has risen in the gas space 44 of the housing 28 is denoted by 50.
  • Floating bodies 52 are arranged in the gas space 44, e.g. spherical parts made of floatable plastic, which float with the medium entering the housing 28 and at least completely cover its surface.
  • a centrifugal disc 54 is fixedly mounted on the agitator shaft 12 outside the housing 28 and forms a defined predetermined gap 56 with respect to the lower end 70 of the housing 28.
  • the lower end of the housing 28 can be provided with a cone 60 directed towards the shaft 12 such that a defined, predetermined gap 58 is formed between the end of the cone and the shaft 12.
  • a seal can be installed below the lower bearing 38 between the housing 28 and the shaft 12, for example in the form of a sealing ring 62 or in the form of a mechanical seal 64 can be formed.
  • the installation space i.e. the space between the motor 18 and the lower bearing 38 filled with 01 to lubricate the mechanical seal 64, while the plastic filling 40 is omitted.
  • connection opening can be provided between the installation space and the outside of the housing 28, which does not show in the drawing, which creates the connection to the surrounding medium, which in this case is used as a lubricant can be used.
  • a suitable sieve or frit is built into this connecting hole.
  • the entire agitator is installed below the liquid level 26 of the medium to be agitated with a vertical longitudinal axis.
  • the agitator can be pivoted up to an angle of approximately 80 ° to the vertical and can work in this pivoted position.
  • the immersion bell 16 When the agitator is operated in the state immersed in the medium to be agitated, the immersion bell 16, ie the interior of its housing 28, is filled with gas, in particular with air.
  • the medium penetrates into the gas space 44 of the diving bell 16 via the gap 56 or 58 and rises into the gas space 44.
  • gas In the gas space can now via line 46 gas is introduced periodically or continuously, as a result of which the liquid level 50 of the medium 72 which has penetrated into the gas space 44 can be kept at a desired predetermined height such that the liquid level 50 is at a sufficient distance from the lower bearing 38.
  • the check valve 48 serves to prevent the medium from flowing back into the line 46 if the gas supply fails.
  • the floating bodies 52 inserted into the gas space 44 float with the penetrating medium. Their amount is such that at least the liquid level 50 of the penetrated medium is completely covered.
  • the medium is set in motion by stirring and by the rotating shaft 12. Due to the floating body 52 floating on the surface of the medium 72 that has penetrated into the gas space 44, the liquid surface is covered against the gas space 44 and ensures that hardly any gas penetrates from the gas space 44 into the medium 72. Via the feed line 46, however, gas that has penetrated the medium 72 and has escaped to the outside is replaced.
  • the gas cushion formed in the gas space 44 is thus constantly maintained via the line 46, taking into account or adapting to the pressure of the surrounding medium.
  • the air volume in the housing 28 is reduced by the plastic filling 40 and thus also the air or gas cushion to be maintained.
  • the motor 18 is also included in the housing 28, ie in the diving bell 16.
  • the sealing rings 62 and 64 can also be used, in this case the installation space of the bearing and coupling is filled with water and water-lubricated plain bearings are expediently used as bearings.
  • the lower compensating bore 42 is closed.
  • the connecting bore, not shown, between the installation space and the outside of the diving bell 16 is expediently formed in the region of the upper end of the housing 28 and this bore serves in particular to bring about the pressure equalization between the installation space and the surrounding medium.
  • an inert gas is also used as the gas to build up and maintain the gas cushion, e.g. then when the motor is housed in the housing 28.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Accessories For Mixers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Meat, Egg Or Seafood Products (AREA)
EP84113989A 1983-11-21 1984-11-19 Agitateur Withdrawn EP0144850A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833341960 DE3341960A1 (de) 1983-11-21 1983-11-21 Ruehrwerk
DE3341960 1983-11-21

Publications (2)

Publication Number Publication Date
EP0144850A2 true EP0144850A2 (fr) 1985-06-19
EP0144850A3 EP0144850A3 (fr) 1987-05-27

Family

ID=6214809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84113989A Withdrawn EP0144850A3 (fr) 1983-11-21 1984-11-19 Agitateur

Country Status (5)

Country Link
US (1) US4565453A (fr)
EP (1) EP0144850A3 (fr)
JP (1) JPS60197227A (fr)
DE (1) DE3341960A1 (fr)
NO (1) NO844608L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008113547A1 (fr) * 2007-03-19 2008-09-25 Invent Umwelt- Und Verfahrenstechnik Ag Dispositif d'entraînement pour le fonctionnement en immersion au-dessous d'une surface de liquide
EP3271617B1 (fr) 2015-03-17 2020-03-04 Compagnie Engrenages et Reducteurs-Messian-Durand Entraînement de broyeur agitateur vertical

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660989A (en) * 1985-12-16 1987-04-28 Cf Industries, Inc. Agitator shaft bottom bearing assembly
GB2212071B (en) * 1987-11-10 1992-02-05 Totton Pumps Ltd Apparatus for mixing or agitating liquids
DE3818890A1 (de) * 1988-06-03 1989-12-07 Ekato Ind Anlagen Verwalt Anordnung zur sicheren abdichtung der lagerung einer rotierenden welle mit zugehoerigem antriebselement
US5368390A (en) * 1993-03-01 1994-11-29 General Signal Corporation Mixer systems
US5568985A (en) * 1994-10-26 1996-10-29 General Signal Corporation Mixer apparatus having an improved steady bearing
US5568975A (en) * 1996-01-04 1996-10-29 General Signal Corporation Self-adjusting steady bearing support assembly and suspension
US20040009610A1 (en) * 1999-04-29 2004-01-15 The University Of Wyoming Research Corporation D/B/A Western Research Institute Organic contaminant soil extraction system
US6386753B1 (en) * 2000-12-29 2002-05-14 Spx Corporation Support assembly and method for supporting a steady bearing
US6517246B2 (en) 2000-12-29 2003-02-11 Spx Corporation Flexible support and method for a steady bearing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE629323C (de) * 1931-08-30 1936-04-28 Himmelwerk Akt Ges Aus einem luftgefuellten Elektromotor mit Aussenlaeufer und einer mit diesem ohne Zwischenwelle und Zwischenlager gekuppelten Kreiselpumpe bestehender Tauchpumpensatz
DE7043882U (de) * 1970-11-27 1971-03-18 Spoerer H Ruehrwerk
US4065232A (en) * 1975-04-08 1977-12-27 Andrew Stratienko Liquid pump sealing system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516918A (en) * 1945-12-14 1950-08-01 Allis Chalmers Mfg Co Submersible bearing construction
US2665122A (en) * 1952-06-11 1954-01-05 Ernest E Rowland Hydraulic power means and seal for pressure vessel agitators
FR2210233A5 (fr) * 1972-12-08 1974-07-05 Renaud Georges

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE629323C (de) * 1931-08-30 1936-04-28 Himmelwerk Akt Ges Aus einem luftgefuellten Elektromotor mit Aussenlaeufer und einer mit diesem ohne Zwischenwelle und Zwischenlager gekuppelten Kreiselpumpe bestehender Tauchpumpensatz
DE7043882U (de) * 1970-11-27 1971-03-18 Spoerer H Ruehrwerk
US4065232A (en) * 1975-04-08 1977-12-27 Andrew Stratienko Liquid pump sealing system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008113547A1 (fr) * 2007-03-19 2008-09-25 Invent Umwelt- Und Verfahrenstechnik Ag Dispositif d'entraînement pour le fonctionnement en immersion au-dessous d'une surface de liquide
CN101636222B (zh) * 2007-03-19 2012-11-21 英文特环境及工艺股份公司 液面下方浸入式作业的驱动器
US8459863B2 (en) 2007-03-19 2013-06-11 Invent Umwelt-Und Verfahrenstechnik Ag Agitator device for circulating a liquid in a clearing basin
EP3271617B1 (fr) 2015-03-17 2020-03-04 Compagnie Engrenages et Reducteurs-Messian-Durand Entraînement de broyeur agitateur vertical

Also Published As

Publication number Publication date
DE3341960A1 (de) 1985-05-30
NO844608L (no) 1985-05-22
EP0144850A3 (fr) 1987-05-27
JPS60197227A (ja) 1985-10-05
US4565453A (en) 1986-01-21

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Effective date: 19871128

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PETERSEN, VAGN, ING.

Inventor name: JUNGHANNS, RAINER

Inventor name: JEKAT, HERBERT, DR.-ING.

Inventor name: GENG, WALTER, ING.