EP1043061A1 - Dispositif de dispersion - Google Patents

Dispositif de dispersion Download PDF

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Publication number
EP1043061A1
EP1043061A1 EP00106283A EP00106283A EP1043061A1 EP 1043061 A1 EP1043061 A1 EP 1043061A1 EP 00106283 A EP00106283 A EP 00106283A EP 00106283 A EP00106283 A EP 00106283A EP 1043061 A1 EP1043061 A1 EP 1043061A1
Authority
EP
European Patent Office
Prior art keywords
dispersing
drum
suspension
tool
liquid supply
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.)
Granted
Application number
EP00106283A
Other languages
German (de)
English (en)
Other versions
EP1043061B1 (fr
Inventor
Guntram Krettek
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
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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
Publication of EP1043061A1 publication Critical patent/EP1043061A1/fr
Application granted granted Critical
Publication of EP1043061B1 publication Critical patent/EP1043061B1/fr
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
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/53—Mixing liquids with solids using driven stirrers
    • 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
    • B01F27/94—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with rotary cylinders or cones
    • B01F27/941—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with rotary cylinders or cones being hollow, perforated or having special stirring elements thereon

Definitions

  • the present invention relates to a dispersing device.
  • Dispersing devices serve, in particular powdery solid and a liquid so together to mix that a dispersion or suspension results.
  • Conventional dispersing devices are like this built that they have a stationary container with a Solid feed device, a liquid feed device and have a suspension discharge device, by arranging a rotating dispersing tool.
  • the dispersing tool is a Agitator, which are designed differently and with different Speeds can rotate.
  • the present invention has for its object a To create a dispersing device that is particularly high Has efficiency.
  • this object is achieved by a dispersing device with a housing, one arranged in the housing rotating drum with a vertical axis in particular, one extending into the drum Solids feeder, one in the drum extending liquid supply device, one Suspension discharge device and one in the drum extending dispersing tool with at least one radially extending dispersing wing solved.
  • the dispersing device is the rotating one arranged in the housing Drum through which a particularly good mixing or Swirling effect between solid particles and Liquid is achieved. This creates dead spaces in the area the stationary container wall in the prior art avoided.
  • the device has the advantage that the dispersing tool either stationary or rotatable can be. So that achieved by the stationary dispersing wing Swirling effect by rotating it be further improved so that even in the central area a possible dead space in the drum can be turned off.
  • Another advantage of the invention is that the rotating drum largely created air bubbles can be ousted.
  • the device therefore has an additional one Degassing effect.
  • the direction of rotation of the drum is preferably selectable. This also affects the direction of rotation of the dispersing tool to. For example, both can also work in the same direction rotate in opposite directions.
  • the solids feed device is preferably a shaft or a pipe.
  • the shaft or pipe extends expediently from the top end of the housing downwards into the drum that a supply of the solid (Powder) in the lower part of the drum.
  • the Solid feed into the pipe or into the shaft can for example via a big bag or a bag emptying device and a downstream dosing screw respectively.
  • the dosing screw can be in the shaft or extend the pipe into it. It expediently starts from a hopper. Heating the pipe or Schachtes is appropriate.
  • the liquid supply device is preferably around a tube that is also from above through the housing is inserted into the lower part of the drum.
  • the end region of the liquid tube can be shaped accordingly be a preferred liquid dispensing direction, for example against the drum wall. So is the end region of the tube is preferably oblique or horizontal educated.
  • the drum drive shaft extending through the drum a splash plate onto which the liquid inlet pipe is directed, i.e. in this case the End area of the inlet pipe obliquely inwards to the drum axis there.
  • the suspension discharge device is preferably located in the bottom of the drum or in the bottom of the housing if the Drum is provided with an overflow. It can be this act as a pipeline from the radially outer area of the case bottom.
  • the dispersing device has a circulatory system for returning through the suspension discharge device discharged suspension via the liquid supply device in the drum. With this system it is possible to circulate the suspension produced until the Desired suspension quality is available. Here you can Solid and liquid are added continuously. When the desired suspension quality is reached, the Solid and liquid supply stopped and the drum emptied.
  • dispersing tool As for the formation of the dispersing tool, see above a variety of embodiments are possible if this a swirling or stirring effect is achieved.
  • there is at least one extending in the radial direction Provide dispersing wing.
  • the solids and / or liquid supply device can also designed as a dispersing tool his.
  • the solids and / or liquid supply device can also designed as a dispersing tool his.
  • the solids and / or liquid supply device can also designed as a dispersing tool his.
  • the drum drive shaft be provided with appropriate dispersing vanes, for example the splash plate already mentioned above.
  • the dispersing tool rotates along with the drum.
  • the dispersing tool at which the solid and / or liquid supply devices are designed as a dispersing tool, is the dispersing tool usually arranged stationary.
  • the vertically arranged drum is preferably open at the top and has an overflow for the suspension produced on.
  • the suspension gets into the Annular gap between rotating drum and stationary housing wall down to the suspension discharge device, which is provided on the housing base.
  • a particularly preferred embodiment of the invention is characterized in that the dispersing device is simultaneously designed as a classifying device and has a discharge device for the classified suspension.
  • This embodiment has the great advantage that a single device is required to perform a dispersing process and perform a subsequent classification process.
  • a conventional dispersion system and subsequent classification are two separate ones Devices used, namely one with one conventional agitator equipped dispersing or Mixing device with a stationary container and the other a classifier in the form of a centrifuge.
  • the above-described dispersing device according to the invention can also be classified according to the invention be used if they have a discharge device is provided for the classified suspension or in Overflow process is operated. When classifying is in usually worked with a higher drum speed than when dispersing.
  • this one Embodiment preferably with the inner wall of the drum Provide chambers that the separated by the classification process Roughly record that in a subsequent Cleaning stage solved again and, if necessary after a grinding process, reintroduced into the suspension to be classified becomes.
  • the dispersing tool is expediently so trained that it as a cleaning tool in the cleaning stage can be used.
  • the at least one dispersing wing acts as a cleaning knife with which the sediment is released mechanically.
  • the dispersing wing To impede the classification process by the dispersing wing to avoid this is preferably off and retractable so that it is activated in the respective phase or can be deactivated.
  • the dispersion phase it is unfolded during the classifying phase and unfolded again during the subsequent cleaning phase. Folded in here means that the wing no longer occupies a radial position.
  • solids supply device Liquid supply device and / or the discharge device for the classified suspension into the drum and again movable out of this, in particular swiveling.
  • the facilities depend on the respective process phase arranged inside or outside the drum in order to avoid interference. So will especially the discharge device for the classified suspension during the dispersion phase and cleaning phase the drum swung out.
  • Yet another embodiment of the invention draws is characterized in that the dispersing tool in the drum is movable in the axial and / or radial direction.
  • This Embodiment makes it possible to vary the device continue to increase because now any points within the drum with the dispersing tool and / or Cleaning tools are accessible.
  • the classified To circulate suspension will here via the suspension discharge device from the drum withdrawn and over the liquid supply device reinserted into the drum.
  • the Liquid supply device with the at least one dispersing wing be provided in this embodiment is simultaneously designed as a cleaning knife.
  • the dispersion and classification process can be done with different speeds can be performed. Both Operations can also take different directions of rotation the drum can be realized. For example, that Feature be realized that the at least one dispersing wing (Cleaning knife) depending on the direction of rotation unfolds or folds back. Unfolding is in the Dispersing and cleaning phase accomplished during a Folding back the classification phase is reached, in which the The drum rotates in opposite directions.
  • the schematically shown in Figure 1 in vertical section Dispersing device has a stationary housing 1, in which a vertically arranged drum 2 is provided, the is driven via a shaft 7 so that it is within of the housing 1 rotates.
  • the drum 2 is open at the top and has an overflow shown at 12 over which the in the drum 2 produced suspension from the bottom of the Housing outgoing suspension discharge line 10 arrives.
  • a powder feed device with a powder hopper 4, a metering screw 5, which is arranged in a feed tube, and a powder chute 6, which extends from the top into the housing 1 and into the drum 2, serves to feed a solid that is in the dispersing device to be converted into a suspension while hydrated.
  • the solid can be, for example, SiO 2 powder.
  • the powder chute 6 extends into the lower region of the drum 2 and has a corresponding outlet opening for the powder at its lower end.
  • a liquid supply device 8 in the form of a water supply pipe also extends through the top of the housing into the lower region of the drum 2. At the lower end, the supply pipe is bent radially outwards, so that the water supplied leads radially outwards in the direction of the drum outer wall becomes.
  • the drum 2 has a in its radially outer region Row of receiving chambers 3 arranged one above the other, that shown in Figure 1 on the right side of the drum 2 are. These chambers will work later explained.
  • Figure 1 shows the dispersing wing 1 in the unfolded state in which it is up extend into the chambers 3. In addition to their swirling function these dispersing vanes have another Task that will be explained later.
  • the dispersing device shown here serves simultaneously as a classifying device and also has a Removal device for the classified suspension, which in is in the form of a discharge pipe 9 which extends up to extends to the upper edge region of the open drum 2.
  • the device works in the following way.
  • SiO 2 powder is introduced into the rotating drum 2 via the feed chute 8 and water through the feed pipe 8 for dispersion.
  • the speed of the drum is set to the dispersing speed.
  • a suspension is formed from the powder and the water supplied by the rotating drum and the dispersing vanes 11, three of which are arranged one above the other.
  • the suspension exits the drum via the overflow 12 and reaches the suspension discharge line 10 through the annular gap between the drum and the housing. It can then be led into a suitable storage device or can be recirculated to the dispersing device via the pipe 8 .
  • the suspension produced is to be classified, it is withdrawn from the memory and via the feed pipe 8 in the lower part of the drum towards the Drum wall guided in a continuous process.
  • the speed of the drum 2 to classification speed set.
  • the dispersed wings 11 are unfolded folded inwards against the outer wall of the powder chute 6.
  • the drum rotates with the corresponding one Classification speed, whereby coarse particles of the to be classified Suspension to the outside against the inside wall of the drum chambers 3 arranged there are flung. In the Chamber forms a solid cake, which with progressive Classification process is getting thicker.
  • the classified Suspension is withdrawn via the discharge pipe 9.
  • This discharge pipe 9 is designed to be pivotable, so that it is pivoted into the housing only in the classification phase becomes.
  • the classified suspension can also be circulated and reinserted into the drum through tube 8. If an appropriate quality of the classified suspension the classification process is stopped. The remaining suspension in the drum can now be deducted via a residual drain, not shown.
  • the cleaning phase of the device now begins.
  • the dispersing wing 11 which at the same time as Serve cleaning knives, unfolded so that they are in the Reach in chambers 3.
  • the rotating cake loosened by the fixed knife.
  • the corresponding cleaning effect can be achieved by adding water be supported via the tube 8. It forms in the Drum 2 again a suspension of coarse fraction and water, that can be dissipated.
  • the bulk can be ground and the suspension obtained can be returned to the system be introduced.
  • At the end of the cleaning phase can be started again with a dispersion phase.
  • the dispersing device also comprises a stationary one Housing 1 with a drum 2 arranged vertically therein, which is rotated via a shaft 7.
  • a solids feeder is in the form of a tube 17, that through the top of the housing 1 to the bottom Area of the drum 2 extends into it.
  • a metering screw 18 is arranged in the tube 17 in the tube.
  • the tube 17 goes to his upper end in a hopper 19 over.
  • the dosing screw 18 feeds powder into the drum.
  • the liquid supply device is in the form of a supply pipe 8 trained, which is also characterized by the Top of the housing 1 to the bottom of the rotating Drum 2 extends. In the lower area it is Pipe 8 bent obliquely inwards and downwards, as shown at 13. As a result, the liquid supplied via the pipe 8 (Water) led to a splash plate 14, the is firmly connected to the drum shaft 7. In this way a sputtering or swirling effect is related reached on the supplied liquid and the solid.
  • dispersing tool 15 provided that in the form of a rod or several rods is formed, which extends through the top of the housing down to the bottom of the rotating Drum 2 extends.
  • bar Dispersing wing 16 is provided, which can be folded in and out are and in Figure 2 in their extended position are shown.
  • the spray plate serves as an additional dispersing device 14, for swirling in the central area of the Drum provides.
  • the functioning of the device corresponds essentially that of FIG. 1.
  • the device is as a batch or inline machine applicable.
  • the suspension discharge is with and without pressure possible.
  • the solid (powder) can be drawn in by means of generated negative pressure (rotating drum) take place, whereby the pollution of the environment is reduced. In terms of the dispersing effect is a continuous influence possible.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Crushing And Pulverization Processes (AREA)
EP00106283A 1999-03-27 2000-03-23 Dispositif de dispersion Expired - Lifetime EP1043061B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914086 1999-03-27
DE19914086A DE19914086A1 (de) 1999-03-27 1999-03-27 Dispergiervorrichtung

Publications (2)

Publication Number Publication Date
EP1043061A1 true EP1043061A1 (fr) 2000-10-11
EP1043061B1 EP1043061B1 (fr) 2006-12-13

Family

ID=7902735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00106283A Expired - Lifetime EP1043061B1 (fr) 1999-03-27 2000-03-23 Dispositif de dispersion

Country Status (3)

Country Link
EP (1) EP1043061B1 (fr)
AT (1) ATE347929T1 (fr)
DE (2) DE19914086A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109954429A (zh) * 2019-03-21 2019-07-02 黑龙江兰德超声科技股份有限公司 一种润滑油颗粒耦合分散装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10196972D2 (de) * 2001-10-06 2004-08-19 Guntram Krettek Nassklassiereinrichtung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2091532A (en) * 1935-03-29 1937-08-31 Robert M Strong Mixing device
DE1207347B (de) * 1961-12-06 1965-12-23 Roger Joseph Sevin Maschine zum Dispergieren von Stoffteilchen
CH475025A (de) * 1966-05-25 1969-07-15 Buehner Willy Verfahren und Vorrichtung zum kontinuierlichen Dispergieren vorwiegend viskoser Substanzen
CH495163A (de) * 1969-04-14 1970-08-31 William Hooper Robert Vorrichtung zum Mischen und Auszentrifugieren
US3635443A (en) * 1970-11-19 1972-01-18 Patterson Kelley Co Dispersion head for solids-liquids blender
SU1456318A1 (ru) * 1986-12-25 1989-02-07 Предприятие П/Я Г-4632 Растворосмеситель
EP0570335A1 (fr) * 1992-04-30 1993-11-18 Urs Liechti Dispositif et procédé pour mélanger un composant pulvérulent solide dans un matériau liquide
US5743840A (en) * 1996-06-24 1998-04-28 Carr Separations, Inc. Centrifuge with a heating jacket for drying collected solids

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2091532A (en) * 1935-03-29 1937-08-31 Robert M Strong Mixing device
DE1207347B (de) * 1961-12-06 1965-12-23 Roger Joseph Sevin Maschine zum Dispergieren von Stoffteilchen
CH475025A (de) * 1966-05-25 1969-07-15 Buehner Willy Verfahren und Vorrichtung zum kontinuierlichen Dispergieren vorwiegend viskoser Substanzen
CH495163A (de) * 1969-04-14 1970-08-31 William Hooper Robert Vorrichtung zum Mischen und Auszentrifugieren
US3635443A (en) * 1970-11-19 1972-01-18 Patterson Kelley Co Dispersion head for solids-liquids blender
SU1456318A1 (ru) * 1986-12-25 1989-02-07 Предприятие П/Я Г-4632 Растворосмеситель
EP0570335A1 (fr) * 1992-04-30 1993-11-18 Urs Liechti Dispositif et procédé pour mélanger un composant pulvérulent solide dans un matériau liquide
US5743840A (en) * 1996-06-24 1998-04-28 Carr Separations, Inc. Centrifuge with a heating jacket for drying collected solids

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8947, 10 January 1990 Derwent World Patents Index; Class J02, AN 89-346299, XP002141787 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109954429A (zh) * 2019-03-21 2019-07-02 黑龙江兰德超声科技股份有限公司 一种润滑油颗粒耦合分散装置

Also Published As

Publication number Publication date
DE19914086A1 (de) 2000-09-28
ATE347929T1 (de) 2007-01-15
DE50013844D1 (de) 2007-01-25
EP1043061B1 (fr) 2006-12-13

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