EP1308202A1 - Appareil pour mélanger au moins deux fluides - Google Patents

Appareil pour mélanger au moins deux fluides Download PDF

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Publication number
EP1308202A1
EP1308202A1 EP02022597A EP02022597A EP1308202A1 EP 1308202 A1 EP1308202 A1 EP 1308202A1 EP 02022597 A EP02022597 A EP 02022597A EP 02022597 A EP02022597 A EP 02022597A EP 1308202 A1 EP1308202 A1 EP 1308202A1
Authority
EP
European Patent Office
Prior art keywords
mixing
tool
mixing tool
fluids
mixing chamber
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Withdrawn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
EP02022597A
Other languages
German (de)
English (en)
Inventor
Gerd Scheying
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1308202A1 publication Critical patent/EP1308202A1/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Withdrawn legal-status Critical Current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
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/44—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement
    • B01F31/441—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement performing a rectilinear reciprocating movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/40—Mixers with shaking, oscillating, or vibrating mechanisms with an axially oscillating rotary stirrer

Definitions

  • the invention is based on a device for mixing at least two substances, in particular two fluids, according to the Art defined in the preamble of claim 1 out.
  • a common device of the type mentioned in the introduction is designed as an agitator. Rotates on an agitator a mixing tool, the so-called stirring element, in a static or a moving mixing chamber into which the mixing substances are introduced.
  • static mixers are known, which as aggregates are trained with fixed internals and where fluid product flows using flow energies be mixed.
  • Mixers for highly viscous media are also known a cross-mixing of the media by artificially created Turbulence is achieved. Especially with plastic-viscous Media can be without such turbulence Stagnation zones arise.
  • Examples of mixers for highly viscous media are so-called spiral, anchor, coaxial and multi-shaft agitators.
  • Mixture of highly viscous media including planetary mixers, trough mixers, Stamp kneaders and screw machines are used.
  • the mixing of the media to be mixed at least partially by rotation of a mixing tool are examples of the mixing devices listed.
  • a so-called grease kneader to use which comprises a housing in which a kneading chamber is formed into which the grease is introduced and in which the grease by a manual Machined up and down movement of a walk stamp can be.
  • The. at least mixing device two substances, in particular at least two fluids the preamble of claim 1, in which the mixing tool stamp-like and linearly movable and has a connection for an actuating device, has the advantage that a homogeneous mixing of the substances or media to be mixed can be achieved.
  • the substances are mixed in particular by multiple, axially directed linear movements of the stamp-like Mixing tool in the mixing chamber.
  • the device according to the invention in any proportions and suspensions be mixed automatically and homogeneously.
  • the device according to the invention in the mixing highly viscous homogeneous liquids and in particular plastic-viscous fluids, which have flow limits, as well as thixotropic media.
  • pseudoplastic fluids in which it in an agitator due to its viscoelasticity a so-calledSteenberg effect would be sufficient miscible. It has also been shown that with the device according to the invention so-called Bingham body and Fluids with pronounced dilatancy are easy to work with.
  • Suspensions and foams are mixed effectively Represent fluids in the broadest sense and with which usual agitators only an insufficient mixture could be.
  • one Agitator occurs with these fluids by using one Device according to the invention representing the type of "linear mixer” no so-called melt fracture, in which a Fluid due to insufficient mixing and thus increased Shear stress tears internally, causing large volumes of the fluids to be mixed no longer participate in the mixing process.
  • the device according to the invention is suitable for mixing any substances, but preferably of fluids.
  • fluid is - like the one above Show application examples mentioned - here in its broadest To understand the senses and therefore includes gases, liquids, highly viscous fluids, suspensions, emulsions and Aerogels.
  • the stamp-like mixing tool is particularly such designed that with a linear movement essentially that total volume of the mixing chamber covered by the mixing process can be.
  • a cylindrical mixing chamber is suitable for this, in which a disc-shaped mixing tool is axially movable that essentially the entire Cylinder height can be covered by this.
  • the device according to the invention offers such an interpretation is an advantage in terms of time, because a homogeneous mixing of the media to be mixed, also Newtonian fluids, in a shorter time than when used can be achieved by rotary mixers, because of the first completed linear movement of the mixing tool the entire volume of the mixing chamber can be detected and circulated become.
  • the mixing tool is preferably actuated by means of an actuator that is used for transmission a linear movement is formed on the mixing tool.
  • the actuator includes one Electric motor.
  • the device according to the invention preferably has at least one filling opening. This can then with a filling line leading to a storage tank for fluid be connected. It turns out to be cheap To design a device with at least two filling openings, with one of the to be mixed over each filling opening Substances can be passed into the mixing chamber. To prevent, that when mixing the substances through the filling opening the filling openings are pressed out of the mixing chamber appropriately equipped with a valve.
  • a seven-way ball valve can be placed in the filling opening be arranged so that via a filling opening by controlling the valve accordingly introduced into the mixing chamber to seven different substances can be.
  • the mixing tool comprises a mixing disk, which is attached to a mixing tool shaft attached to the Outside of the mixer housing is guided and there the connection of the mixing tool to the actuator forms. Accordingly, this wave is at least in operation connected to the actuator.
  • the linear mixer is or the device according to the invention is designed such that the mixing tool can also be rotated is. Then the mixing tool can additionally with a lifting movement by small angular increments, for example by 15 °, or rotated continuously, which is advantageous Turbulence can be generated in the media to be mixed.
  • the diameter of the mixing disk preferably essentially the inside diameter of the mixing chamber.
  • the mixing disc can have an O-ring or the like on its circumference have, which during the lifting movement on the inner wall of the Mixer housing slides.
  • the mixing disc has several holes or has openings through which the to be mixed Fabrics are pressed during the mixing process.
  • these holes each have an edge-free contour.
  • the perforated area should cover a large part of the mixing disk area take the so-called walking resistance during to keep a mixing process low.
  • the thickness of the mixing disc has essentially no influence on the mixing process as such and essentially depends depends on the material used. Usually is however, a thickness of 500 ⁇ m is sufficient. A slight thickness the mixing disc offers advantages when cleaning the Linear mixer.
  • the axis of the holes can be angled relative to the Mixing tool shaft to be aligned. In this case additional turbulence when the mixing disc is lifted generated in the media to be mixed.
  • the mixing disc is for this purpose with a greater thickness, for example 3 mm can be to train.
  • the device According to an advantageous embodiment, the device According to the invention, an extrusion piston with a piston shaft on which is on the outside of the mixer housing is led.
  • the piston shaft which suitably with a Actuator is connected, which is identical with the actuating device of the mixing tool the ejector piston so that from the outside of the mixer housing from the mixed substances through the outlet opening can be squeezed out of the mixer chamber.
  • the metering device which cooperates with the outlet opening, can for example act as a valve needle Embrace rod.
  • This rod can act as a guide for the Mixing tool shaft and the piston shaft serve and coaxial be arranged to these two.
  • the mixed substances are expediently metered by a defined shift of the Dispensing piston assigned to the metering device and lifting the rod from its seat in the area of the outlet opening.
  • the coaxially arranged shafts and the coaxial to the shafts arranged rod are useful over a common Opening in the mixer housing on the outside of the mixer housing guided and by means of a radial shaft seal or the like sealed.
  • the seal is convenient trained so that direct contact of the Sealing surface with abrasive components, for example with ceramic particles in an organic medium, or too mixing substances is largely excluded.
  • the device according to the invention has for squeezing Air advantageously during the filling of the mixing chamber a vent valve. Can upstream from this optionally a filter frit or the like is arranged his.
  • a cleaning liquid is advantageous introduced into the mixing chamber via the filling opening and circulated there by means of the mixing disc and then over the Outlet opening made from the mixing chamber.
  • the device according to the invention it is also conceivable to use the device according to the invention to form a plurality of rods arranged axially in the mixing chamber, each one of the arranged in the mixing disc Reach through holes, parallel to the mixing disc shaft are aligned and close to the limit of Holes are guided.
  • Such an embodiment is suitable especially to the mixture of waxy media in which such a mix of favorable turbulence in one Stroke of the mixing disc can be generated.
  • the embodiment shown in the drawing shows a device 10 for mixing fluids for integration in a system and for automated actuation is designed.
  • the device 10 represents a linear mixer a mixer housing 11, which is constructed in two parts and a pot-like, cylindrical container 12 and one the container 12 closing bottom 13 includes.
  • the floor 13 is screwed onto the container 12 via a thread 14.
  • a cylindrical mixing chamber 15 formed, which in this embodiment has a diameter about 1.8 cm.
  • Eight filling openings 16 are formed, of which in FIG. 1 five are shown and the bottom 13 with respect to Pass through the axis of the mixer housing 11 in the radial direction.
  • the filling openings 16 are each with one here Check valve not shown equipped to prevent that to be mixed during a mixing process Fluids from the mixing chamber via the filling openings 16 15 are pressed out.
  • a vent opening 17 is arranged, which also with an inlet valve, not shown here is equipped, upstream of which a filter frit can be arranged.
  • the linear mixer 10 is with a stamp-like mixing tool 18 equipped, which comprises a mixing disc 19, which is attached to a mixing tool shaft 20 which via a on the end facing away from the bottom 13 of the Container 12 arranged, central bore 21 to the outside of the mixer housing 11 is guided.
  • the maximum stroke the mixing tool 18 is about 3 cm here.
  • the mixing disk 19 has in the present, in Figure 2 closer execution shown a diameter of about 1.75 cm and a thickness of 500 microns and has eight openings 22 through which the fluids to be mixed during be pressed through a mixing process.
  • the diameter the mixing disk 19 corresponds essentially to that Diameter of the mixing chamber 15.
  • the mixing tool shaft 20 is on a acting as a valve needle Rod 23 guided, which also the bore 21st and in its locked position, the mixing chamber 15 in the axial Direction passes through and with an outlet opening or nozzle 24 interacts, which are arranged centrally in the bottom 13 is.
  • the mixing tool shaft 20 in turn serves as a guide for a piston shaft 25 connected to an extrusion piston 26 is aligned parallel to the mixing disk 19 is.
  • the rod 23, the mixing tool shaft 20 and the piston shaft 25 form a connection outside the mixer housing 11 27 for an actuating device, not shown here, so that a linear and with respect to the axis of the mixer 10 axially directed stroke movement can be transferred. Furthermore, the mixing tool shaft 20 designed so that a rotational movement is transferable to the mixing disk 19.
  • the linear mixer 10 described above operates in described below.
  • the Squeeze piston 26 arranged in a retracted position is, d. H. on the boundary wall having the bore 21 of the container 12 abuts.
  • the Auspreßkolben 26 while filling the To keep mixing chamber 15 in a different position so that the volume of the mixing chamber 15 is reduced.
  • the control of the ejection piston 26 takes place via the piston shaft 25 the filling of the mixing chamber 15 is in the vent 17 arranged vent valve opened, so that gases contained in the mixing chamber 15, in particular Air that can be displaced and a full fill is possible.
  • the supply of the fluids to be mixed can via volumetric pressure-volume delivery from a storage vessel with one each with a filling opening 16 connected line.
  • the mixing disc 19 several times by means of the mixing tool shaft 20 the entire axial extent of the mixing chamber 15 and moved here. On the one hand, it serves as stops for the mixing disk 19 the Auspreßkolben 19 and on the other hand the front Inner wall of the bottom 13.
  • the rotation angle increment can be 15 °, for example, so that pseudoplastic suspensions mixed sufficiently homogeneously become.
  • the entire volume of the mixing chamber 15 is from the Stroke movements of the mixing disc 19 detected, so that a homogeneous Mixing of the filling openings 16 into the Mixing chamber 15 introduced fluids can take place. therefore the entire volume of fluid is circulated during the mixing process.
  • the mixture is made from the fluids via the outlet opening cooperating with the rod 23 or nozzle 24 metered out, specifically for this purpose the Piston shaft 25 actuable ejection piston 26 defined in Moved towards the lid 13.
  • the pressure piston 26 is designed as a punch during the pressing process Mixing tool 18 tracked.
  • the Auspreßkolben 26 and the Rod 23, which form a metering device, can be actuated in this way that a drop of a lot of z. B. 20 ul is metered through the outlet opening 24. This can by means of a dispenser, not shown here can be applied to a substrate.
  • the mixing chamber can be used to clean Fluid residues are subjected to a cleaning process.
  • a cleaning liquid is poured over the filling openings 16 introduced into the mixing chamber 15 and there by means the mixing disc 19 circulated, the same time Mixing disc is cleaned.
  • the Cleaning liquid by means of the ejection piston 26 the outlet opening 24 is pressed out.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Accessories For Mixers (AREA)
EP02022597A 2001-10-23 2002-10-09 Appareil pour mélanger au moins deux fluides Withdrawn EP1308202A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10152115 2001-10-23
DE10152115A DE10152115A1 (de) 2001-10-23 2001-10-23 Vorrichtung zum Mischen mindestens zweier Fluide

Publications (1)

Publication Number Publication Date
EP1308202A1 true EP1308202A1 (fr) 2003-05-07

Family

ID=7703319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02022597A Withdrawn EP1308202A1 (fr) 2001-10-23 2002-10-09 Appareil pour mélanger au moins deux fluides

Country Status (3)

Country Link
US (1) US20030103410A1 (fr)
EP (1) EP1308202A1 (fr)
DE (1) DE10152115A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004008573U1 (de) * 2004-05-26 2004-08-12 Konietzko, Albrecht Anordnung zur Herstellung von Rezepturmischungen
US20090120306A1 (en) * 2007-08-23 2009-05-14 Decarlo John M Systems and methods of mixing and cooling food products
EP2393456B1 (fr) * 2009-02-06 2015-01-21 Tecres S.P.A. Mélangeur et procédé pour mélanger des composés diphasiques
JP7270308B1 (ja) 2022-03-07 2023-05-10 株式会社サイエンス バブル液発生器
CN114632453B (zh) * 2022-05-18 2022-07-29 广东卫康有害生物防制有限公司 登革热病毒防治灭蚊组合物多相对流混匀装置及制备方法

Citations (3)

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Publication number Priority date Publication date Assignee Title
GB2100613A (en) * 1981-06-18 1983-01-06 Jeffrey Keith Wheeldon Slurry casting of metals
SU1333396A1 (ru) * 1985-09-23 1987-08-30 Научно-производственное объединение "Полимерсинтез" Смеситель
US5190373A (en) * 1991-12-24 1993-03-02 Union Carbide Chemicals & Plastics Technology Corporation Method, apparatus, and article for forming a heated, pressurized mixture of fluids

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DE3708803A1 (de) * 1987-03-18 1988-09-29 Fischbach A Kunststoff Kg Mischvorrichtung fuer pastoese mehrkomponenten-massen
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2100613A (en) * 1981-06-18 1983-01-06 Jeffrey Keith Wheeldon Slurry casting of metals
SU1333396A1 (ru) * 1985-09-23 1987-08-30 Научно-производственное объединение "Полимерсинтез" Смеситель
US5190373A (en) * 1991-12-24 1993-03-02 Union Carbide Chemicals & Plastics Technology Corporation Method, apparatus, and article for forming a heated, pressurized mixture of fluids

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Also Published As

Publication number Publication date
US20030103410A1 (en) 2003-06-05
DE10152115A1 (de) 2003-05-08

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