EP2121173B1 - Antriebsvorrichtung zum tauchbetrieb unterhalb einer flüssigkeitsoberfläche - Google Patents

Antriebsvorrichtung zum tauchbetrieb unterhalb einer flüssigkeitsoberfläche Download PDF

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Publication number
EP2121173B1
EP2121173B1 EP08716586A EP08716586A EP2121173B1 EP 2121173 B1 EP2121173 B1 EP 2121173B1 EP 08716586 A EP08716586 A EP 08716586A EP 08716586 A EP08716586 A EP 08716586A EP 2121173 B1 EP2121173 B1 EP 2121173B1
Authority
EP
European Patent Office
Prior art keywords
drive device
line
liquid
sealing chamber
drive shaft
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.)
Active
Application number
EP08716586A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2121173A1 (de
Inventor
Marcus HÖFKEN
Thomas Hagspiel
Torsten Frey
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.)
Invent Umwelt und Verfahrenstechnik AG
Original Assignee
Invent Umwelt und Verfahrenstechnik AG
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Filing date
Publication date
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Application filed by Invent Umwelt und Verfahrenstechnik AG filed Critical Invent Umwelt und Verfahrenstechnik AG
Priority to PL08716586T priority Critical patent/PL2121173T3/pl
Publication of EP2121173A1 publication Critical patent/EP2121173A1/de
Application granted granted Critical
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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
    • B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23313—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a separate conduit substantially parallel with the stirrer axis
    • 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
    • B01F27/117—Stirrers provided with conical-shaped elements, e.g. funnel-shaped
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32—Driving arrangements
    • B01F35/323—Driving arrangements for vertical stirrer shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
    • B01F23/23362—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced under the stirrer

Definitions

  • the invention relates to a drive device for immersion operation below a liquid surface, in particular for immersion operation in a clarifier.
  • agitators are used to circulate sewage collected in a clarifier.
  • An electric motor driving the drive shaft can be mounted either above or below the liquid surface.
  • so-called horizontal stirring devices are known in which a commonly mounted below the liquid surface electric motor rotates a propeller.
  • the drive shaft In stirring devices with a drive device mounted below the liquid surface, it is necessary to seal the drive shaft guided from a housing of the drive device so that no liquid can penetrate into the housing.
  • the drive shaft is usually guided by a sealing chamber, at the input of a shaft seal and at its liquid-facing output a mechanical seal are provided.
  • a mechanical seal For lubrication of the mechanical seal, an oil reservoir is usually received in the seal chamber.
  • the object of the invention is to eliminate the disadvantages of the prior art.
  • a drive device is to be specified with which a dive operation with an improved service life is possible.
  • the drive device should be as easy as possible to maintain and in particular damage in the region of the seal should be easy to recognize.
  • a line for receiving an oil reservoir connected to the sealing chamber and is guided to above the liquid surface By providing the sealing chamber with an oil reservoir reaching above the liquid, it can be ensured in a simple manner that the sealing chamber is completely filled with oil at all times.
  • the oil level in the seal chamber is easy to control.
  • An impermissibly rapid decrease in the oil supply taken up in the line indicates a defect in the mechanical seal.
  • a repair of the mechanical seal can thus be limited to the cases of actual damage to the same.
  • Another essential advantage of the invention is that a hydrostatic pressure is exerted on the oil absorbed in the sealing chamber by the oil reservoir reaching up to above the liquid surface.
  • the oil absorbed in the sealing chamber is thus under a higher pressure than the fluid in the vicinity of the drive shaft. This can be an undesirable Ingress of liquid in the area of the mechanical seal can be prevented. It can be ensured that the mechanical seal is exposed to oil at all times.
  • the line is formed transparent at least in a portion located above the liquid surface. This allows easy and quick visual inspection. It can thus be determined immediately whether there is still enough oil in the line.
  • the line is connected to a pressure source for generating an over the sealing chamber immediate fluid pressure exceeding positive pressure.
  • the pressure source is preferably provided above the liquid surface. This facilitates repair and maintenance.
  • the pressure source is expediently a Druckluftquel-le, which is connected to the oil reservoir.
  • the pressure source may also be a compressed air line.
  • compressed air lines are performed especially in sewage treatment plants for the ventilation of clarifiers in the range of stirring devices.
  • Such a compressed air line is usually led to the bottom of the clarifier and pressurized with a pressure which, in contrast to the acting fluid pressure, allows an escape of air in the region of the bottom of the clarifier.
  • the oil-filled sealing chamber of the drive device is less deeply immersed in the liquid, so that the force acting in the vicinity of the sealing chamber fluid pressure is less than the air pressure located in the compressed air line.
  • the duct is advantageously guided substantially vertically over a substantial part of its length, ie with an increase of more than 40 °, along the compressed air line. It is connected in particular in such a vertical section with the compressed air line.
  • a connection point of the line to the compressed air line is expediently at a height of 10 cm to 200 cm, preferably about 50 cm to 100 cm, above a level of the liquid.
  • the line is guided at least in sections along the compressed air line to the seal chamber.
  • the compressed air line is usually designed much more stable compared to the line.
  • the line may be at least partially performed along a cable supplying the electric motor with power. Also in this case, an improved protection of the line is achieved from damage.
  • the term "drive device” is to be understood generally. It can be an electric motor. In this case, the drive shaft is part of the electric motor. The drive device can also be combined with a transmission. In this case, the drive shaft is part of a driven with the electric motor gearbox.
  • the sealing chamber is expediently sealed on a side facing the electric motor or gear towards the second side with a shaft seal surrounding the drive shaft. It may be a conventional shaft seal, such as a Simmerring or the like, act, with an outlet of pressurized oil from the seal chamber is effectively avoided.
  • the sealing chamber, the mechanical seal and the shaft seal may be part of a sealing device designed as a mounting unit.
  • a sealing device can be easily and quickly replaced. A separate disassembly of the seals received therein, which is time consuming and expensive, is avoided.
  • a submersible mixer in which a drive device according to the invention is mounted on a frame and wherein the drive shaft is connected to a stirring body.
  • the stirring body may be a propeller or a hyperboloid stirring body.
  • the drive shaft may be horizontal or vertical with respect to a liquid surface.
  • the frame may be part of a ventilation device and connected to a compressed air line. Ie. the frame may be hollow at least in sections so that compressed air can be guided into the vicinity of the bottom, for example a clarifier.
  • Fig. 1 and 2 show a submersible agitator, which is below a liquid surface F, for example, in a clarifier, operated.
  • a drive device 2 On a frame 1, a drive device 2 is attached.
  • the drive device 2 comprises an electric motor 3, which is drivingly connected to a transmission 4 here.
  • a compressed air hose 7 is attached at the hollow tubes, in particular square tubes, manufactured frame 1, a compressed air hose 7 is attached. Below the stirring element 6 is also connected to the frame 1 ring line 8, which is provided with (not shown here) ventilation openings. Air can thus be conveyed through the frame 1 into the ring line 8 and from there through the ventilation openings into a region below the stirring element 6.
  • the compressed air hose 7 may also be connected directly to the ring line 8 or another suitable gassing element, d. H. the frame 1 does not have to be part of a ventilation device.
  • a connected to the electric motor 3 cable 9 is partially guided along the compressed air hose 7 and connected in this section with the compressed air hose 7.
  • Fig. 3 shows a detailed view of a designed as a mounting unit sealing device 9, which is a sealing chamber 10 surrounds.
  • the drive shaft 5 is guided by a shaft seal 11 received on the input side in the sealing device 9 and a mechanical seal 12 received on the output side in the sealing device 9.
  • a sliding ring 13 is pressed by means of a spring 14 against a Gegengleitring 15.
  • the Jacobgleitring 15 is supported on a radially inwardly projecting circumferential housing portion 16.
  • the spring 14 is supported against a radially circumferential shoulder 17 of the drive shaft 5. From the sliding ring 13 to the vicinity of the shoulder 17, a sealing sleeve 18 made of an elastic material extends.
  • the sealing chamber 10 has an opening 19, to which a first connecting element 20 of a line (not shown) is attached.
  • Fig. 4 shows in perspective view a located above the liquid surface F end of the compressed air hose 7, which is provided with a flange 21 for connection to a (not shown here) compressed air line.
  • a line 22 connected to the first connection element 20 with the seal chamber 10 is connected to the compressed air line 7 in the region of the flange 21 with a second connection element 23.
  • the line 22 is suitably made of a transparent tube, so that an oil absorbed therein can be seen from the outside.
  • the conduit 22 is guided along the compressed air hose 7 and secured thereto.
  • the function of the drive device is the following:
  • the sealed by the mechanical seal 12 and the shaft seal 11 seal chamber 10 is filled with a, preferably biodegradable, oil.
  • the leading away from the seal chamber 10 line 22 is also filled with oil.
  • the oil taken up in the line 22 forms an oil reservoir.
  • the amount of oil stored in the conduit 22 can be readily checked by visually inspecting them transparently from the outside.
  • the section of the line 22 located above the liquid surface F may be provided with a marking.
  • the oil supply and thus also the oil absorbed in the sealing chamber 10 is pressurized.
  • the overpressure is greater than a fluid pressure which acts on the mechanical seal 12.
  • a small amount of oil continuously exits through the mechanical seal 12 in the direction of the surrounding liquid. This ensures at all times that no liquid, in particular laden with dirt, can penetrate into the mechanical seal 12 and cause it to wear.
  • a connection of the line 22 has been described on the compressed air hose 7 for the sake of simplicity. It is of course possible to use other pressure sources to generate an overpressure in the pressure chamber 10.
  • the overpressure can also be generated by means of a compressor or the like.
  • a given through the line 22 volume has been described as an oil reservoir.
  • the line 22 with To connect a storage tank or turn on the line 22 a storage tank.
  • the mounting unit advantageously designed as a sealing device 9 in the present exemplary embodiment can also be part of a gear housing or a motor housing, ie it does not have to be designed as a mounting unit.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Sealing Devices (AREA)
  • Mechanical Sealing (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Coating Apparatus (AREA)
  • Fixing For Electrophotography (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Accessories For Mixers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
EP08716586A 2007-03-19 2008-03-18 Antriebsvorrichtung zum tauchbetrieb unterhalb einer flüssigkeitsoberfläche Active EP2121173B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08716586T PL2121173T3 (pl) 2007-03-19 2008-03-18 Zespół napędowy do pracy w zanurzeniu pod powierzchnią cieczy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007013630A DE102007013630B4 (de) 2007-03-19 2007-03-19 Antriebsvorrichtung zum Tauchbetrieb unterhalb einer Flüssigkeitsoberfläche und Tauchrührwerk
PCT/EP2008/002124 WO2008113547A1 (de) 2007-03-19 2008-03-18 Antriebsvorrichtung zum tauchbetrieb unterhalb einer flüssigkeitsoberfläche

Publications (2)

Publication Number Publication Date
EP2121173A1 EP2121173A1 (de) 2009-11-25
EP2121173B1 true EP2121173B1 (de) 2010-06-23

Family

ID=39587982

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08716586A Active EP2121173B1 (de) 2007-03-19 2008-03-18 Antriebsvorrichtung zum tauchbetrieb unterhalb einer flüssigkeitsoberfläche

Country Status (11)

Country Link
US (1) US8459863B2 (pl)
EP (1) EP2121173B1 (pl)
JP (1) JP5020337B2 (pl)
CN (1) CN101636222B (pl)
AT (1) ATE471757T1 (pl)
BR (1) BRPI0808767B1 (pl)
DE (2) DE102007013630B4 (pl)
DK (1) DK2121173T3 (pl)
ES (1) ES2353985T3 (pl)
PL (1) PL2121173T3 (pl)
WO (1) WO2008113547A1 (pl)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007037586B3 (de) * 2007-08-09 2008-09-18 Invent Umwelt- Und Verfahrenstechnik Ag Rührvorrichtung für Belebtschlämme
DE102013225662A1 (de) * 2013-12-11 2015-06-11 Invent Umwelt- Und Verfahrenstechnik Ag Rührkörper zum Umwälzen von in einem Becken aufgenommenem Abwasser und Vorrichtung
DE102013225659A1 (de) * 2013-12-11 2015-06-11 Invent Umwelt- Und Verfahrenstechnik Ag Vorrichtung zum Umwälzen einer in einem Behälter aufgenommenen Flüssigkeit
DE102013225658A1 (de) * 2013-12-11 2015-06-11 Invent Umwelt- Und Verfahrenstechnik Ag Rührkörper und Rührvorrichtung zum Erzeugen einer Strömung in einem Abwasserbehandlungsbecken
DE102014204824A1 (de) * 2014-03-14 2015-09-17 Invent Umwelt-Und Verfahrenstechnik Ag Rührvorrichtung für Abwasser
CN103962050B (zh) * 2014-05-26 2016-01-06 蓝深集团股份有限公司 一种潜水双曲面搅拌机
US10173184B2 (en) * 2015-03-25 2019-01-08 Schlumberger Technology Corporation Blender for mixing and pumping solids and fluids and method of use thereof
DE102018119039A1 (de) * 2018-08-06 2020-02-06 Invent Umwelt-Und Verfahrenstechnik Ag Tauchrührvorrichtung zum Umwälzen von Trinkwasser

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
GB861705A (en) 1956-12-07 1961-02-22 Harry E La Bour Improvements in or relating to rotary shaft seals
US3176996A (en) * 1962-10-12 1965-04-06 Barnett Leon Truman Oil balanced shaft seal
US3735435A (en) * 1970-06-02 1973-05-29 G Mikulicic Rotary hull single buoy offshore loading terminal
GB1422160A (en) * 1972-04-25 1976-01-21 Scott C W Marine propulsion apparatus
JPS51111954A (en) * 1975-03-27 1976-10-02 Shigeru Nishioka Agitator for slurry solution
US4065232A (en) * 1975-04-08 1977-12-27 Andrew Stratienko Liquid pump sealing system
JPS5499946U (pl) * 1977-12-27 1979-07-14
US4210534A (en) * 1979-05-11 1980-07-01 Clevepak Corporation Multiple stage jet nozzle and aeration system
DE3341960A1 (de) * 1983-11-21 1985-05-30 EKATO Industrieanlagen Verwaltungsgesellschaft mbH u. Co, 7860 Schopfheim Ruehrwerk
DE3613625A1 (de) * 1986-04-23 1987-10-29 Dieter Frankenberger Verfahren und vorrichtung zum belueften einer fluessigkeit, insbesondere von abwaessern
DE3925053A1 (de) * 1989-07-28 1991-01-31 Helmut Dorn Ruehrgeraet und verfahren zu dessen betreiben
US5474304A (en) * 1994-06-27 1995-12-12 General Electric Co. Seal oil supply system using differential pressure accumulator
US5795135A (en) 1995-12-05 1998-08-18 Westinghouse Electric Corp. Sub-sea pumping system and an associated method including pressure compensating arrangement for cooling and lubricating fluid
US5798572A (en) * 1996-04-15 1998-08-25 Lehoczky; Kalman N. Under water hydro-turbine energy generator design
SE0300493D0 (sv) * 2003-02-21 2003-02-21 F & N Mekanik Ab Motor controlled switching valve
US7185955B2 (en) * 2004-10-19 2007-03-06 Henry Dombroski Visual indicator for pressurized hub
DE102005017823A1 (de) * 2005-04-18 2006-10-19 Fred Koch Rührwerk

Also Published As

Publication number Publication date
PL2121173T3 (pl) 2010-11-30
ATE471757T1 (de) 2010-07-15
JP2010521295A (ja) 2010-06-24
DK2121173T3 (da) 2010-10-18
WO2008113547A1 (de) 2008-09-25
DE502008000835D1 (de) 2010-08-05
EP2121173A1 (de) 2009-11-25
ES2353985T3 (es) 2011-03-08
DE102007013630B4 (de) 2009-10-29
BRPI0808767A2 (pt) 2014-09-16
BRPI0808767B1 (pt) 2019-09-17
CN101636222B (zh) 2012-11-21
JP5020337B2 (ja) 2012-09-05
US8459863B2 (en) 2013-06-11
US20110003646A1 (en) 2011-01-06
DE102007013630A1 (de) 2008-09-25
CN101636222A (zh) 2010-01-27

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