EP0565755A1 - Dispositif pour mélanger des particules en vrac dans un récipient - Google Patents

Dispositif pour mélanger des particules en vrac dans un récipient Download PDF

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Publication number
EP0565755A1
EP0565755A1 EP92106478A EP92106478A EP0565755A1 EP 0565755 A1 EP0565755 A1 EP 0565755A1 EP 92106478 A EP92106478 A EP 92106478A EP 92106478 A EP92106478 A EP 92106478A EP 0565755 A1 EP0565755 A1 EP 0565755A1
Authority
EP
European Patent Office
Prior art keywords
mixing
container
mixing tube
bulk material
tubes
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Withdrawn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
EP92106478A
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German (de)
English (en)
Inventor
Armin Reif
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.)
SILO VERFAHRENS AG
Original Assignee
SILO VERFAHRENS AG
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 SILO VERFAHRENS AG filed Critical SILO VERFAHRENS AG
Priority to EP92106478A priority Critical patent/EP0565755A1/fr
Publication of EP0565755A1 publication Critical patent/EP0565755A1/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Withdrawn legal-status Critical Current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
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/80—Falling particle mixers, e.g. with repeated agitation along a vertical axis
    • B01F25/82—Falling particle mixers, e.g. with repeated agitation along a vertical axis uniting flows of material taken from different parts of a receptacle or from a set of different receptacles
    • B01F25/821—Falling particle mixers, e.g. with repeated agitation along a vertical axis uniting flows of material taken from different parts of a receptacle or from a set of different receptacles by means of conduits having inlet openings at different levels

Definitions

  • the present invention relates to a device for mixing bulk material in a container.
  • the mixing device essentially consists of a mixing device arranged in the central longitudinal axis of the container, which essentially consists of an outer mixing tube, which has openings, and an inner, slidable and / or displaceable locking slide, which is arranged coaxially to the outer mixing tube also has openings.
  • the openings of the slide valve can thus be covered or partially covered with the openings of the outer mixing tube, so that it is ensured that the mixed material arranged in the container while simultaneously mixing into the interior of this mixing tube flows in and flows towards a central, lower outlet part.
  • the outlet part here has a conical collecting funnel, into which the outlet mixture flows and is discharged from there.
  • the mixed material arranged in the container is in an inhomogeneous composition in the container. It is therefore extremely important that a well-mixed bulk material arrives at the outlet part of the container.
  • the mixing of the bulk material should according to the known EP 0 258 820 can be achieved solely by the mixing tube arranged centrally in the longitudinal axis of the container.
  • the invention has for its object to develop a device for mixing of the type mentioned in such a way that even with large-volume containers, a completely homogeneous mixture of the bulk material is achieved without great energy expenditure (without circulation of the mixed material), even for cases in which extreme requirements be placed on the homogeneity of the mix.
  • the invention is characterized by the technical teaching of claim 1.
  • An essential feature of the invention is that a plurality of parallel mixing tubes which are at a mutual distance from one another are now arranged in the container interior and are combined in a central outlet part.
  • arrangement in the interior also means those mixing tubes that are only partially in the container, i.e. also those that are arranged on the outer wall of the container, but that have access to the interior of the container that flows in bulk.
  • the main advantage is achieved that a much more homogeneous mixture of the bulk material in the container is now guaranteed.
  • the material to be mixed no longer flows radially inwards centrally onto a mixing tube arranged in the center, but that several drainage channels are ensured by a large number of mixing tubes arranged there.
  • This is the mix each assigned a zone or an area around a mixing tube, this area being covered by a mixing tube.
  • the material to be mixed flows essentially into the mixing tube arranged in the central axis of this zone.
  • this product can also flow into adjacent mixing tubes.
  • each mixing tube is now assigned a separately operable closure slide, so that each mixing tube can be controlled separately.
  • This has the advantage that certain zones, where it is known that the mix is inhomogeneous composition, preferentially withdraws mix there and mixes this mix in the outlet with other mix from other zones in order to achieve a homogeneous mixture in the outlet part .
  • each mixing tube, or some of these mixing tubes can be interrupted in any length, z. B. from above, a first, driven slide valve in the upper part engages the mixing tube and engages in the lower part of the same mixing tube, another closure slide which is driven separately from the upper closure slide.
  • Mixing material can now be selectively fetched from the upper area of the container and transported to the outlet via the separate control of a mixing tube (upper part controlled separately from the lower part), or in another embodiment the mixing material can be targeted only from the lower area of the container can be fetched and then discharged into the outlet.
  • the mixing tube In the case of tall silos (containers), it is advisable not to extend the mixing tube in a continuous, uniform diameter from the bottom area to the lid area, because this is associated with a relatively high outlay on materials.
  • the mixing tube is designed with different diameters, the diameter of the mixing tube in the lower region (bottom region) being larger than that of the mixing tube coaxially extending in the lid region.
  • the two mixing tubes are connected to each other by a corresponding flange connection.
  • a middle mixing tube in the region of the conical bottom, the length of which corresponds at least to the vertical length of the conical bottom. This ensures that the bulk material in the area of the conical bottom can be removed without any problems via the central, central mixing tube and can therefore also be included in the homogenization process to homogenize the bulk material composition.
  • this mixing tube can be controlled separately from the other mixing tubes.
  • a further mixing effect arises from the fact that the aforementioned mixing tubes unite in the region of the conically shaped outlet part.
  • the outlet part is arranged below the conical bottom on the container.
  • a container 1 is filled with bulk material 2, which forms a cone 3 in the interior of the container 1.
  • the lower part of the container 1 is designed as a conical bottom 7 which, according to FIG. 5, opens into an outlet part 4 in which the bulk material 2 collects.
  • this outlet part 4 there is a bulk material control, not shown, which ensures that only so much bulk material is discharged via the outlet part 4 and flows out of the latter that the bulk material does not rise into the mixing tubes opening into the outlet part 4.
  • a plurality of mixing tubes 11, 12, 13, 14 are arranged in the container 1.
  • the number of mixing tubes which are arranged radially outward from the central mixing tube 12 in the interior of the container 1 depends on the diameter of the container.
  • three mixing tubes 11, 13, 14 are distributed uniformly radially around the circumference of the container on an identical radius line.
  • Each mixing tube 11-14 has, according to the later figures, a slide valve 23 which, by its actuation, allows the bulk material 2 arranged in the container 1 to flow into the respective mixing tube 11-14 in the arrow directions 5,6.
  • FIG. 1 It can be seen from FIG. 1 that there are different zones of influence (feed areas) for the bulk material 2.
  • FIG. 2 shows, for example, that the intake areas 17, 18, 30 are assigned to the outer mixing tubes 11, 13, 14, it being important that these outer intake areas overlap with the inner intake area 16 for the central mixing tube 12. In this way, dead zones in which the mix is not mixed are avoided.
  • feed areas 17, 18, 30 do not necessarily meet in the form of radius lines on the inner circumference of the container 1, but rather in the area of the segments 31, the feed areas 17, 18, 30 overlap, which results in an extremely homogeneous feed of the bulk material in the respective assigned mixing tubes is reached.
  • FIGS. 3 and 4 show a further exemplary embodiment in comparison to FIGS. 1 and 2. Not three mixing tubes but four mixing tubes 11, 13, 14, 19 are arranged around the circumference, the same numbers applying to the same parts. You can also see an overlap of the different feed areas and you can see that in the vicinity of the container wall the bulk material can flow into a mixing tube (e.g. the mixing tube 13) but also into the mixing tube 14 according to the flow conditions.
  • a mixing tube e.g. the mixing tube 13
  • the outer mixing tubes 11, 13, 14, 16, 19 pass through the conical bottom 7 in the region of the conical bottom 7 and outwards along the outside of the conical bottom Direction to the central outlet part 4 are performed.
  • the conical base 7 is kept free from disturbing installations and the run-out behavior is improved.
  • the container 1 has a lid 15 at the top and that it can be penetrated by an inlet opening 32.
  • FIG. 5 it is shown as a further exemplary embodiment that the mixing tubes 11, 12, 13, 14 are designed to be continuous in their vertical length, but the associated slide valves 23 are formed in two parts.
  • the mixing tube is thus assigned two different mixing tube areas, namely a lower area (mixing tubes 11, 12, 13, 14,) and an upper area (mixing tubes 11a, 12a, 13a, 14a).
  • the mixing tubes are - as said - continuous, only in the respective mixing tube there is a separate closure slide, the closure slide being driven, for example, in the mixing tube 11a by a respective upper drive 20, while the lower closure slide in the lower part of the mixing tube 11 by a lower drive 21 is driven.
  • FIGS. 6 and 7 details of a mixing tube, for. B. the mixing tube 11,11a shown in Figure 5. It can be seen that the mixing tube according to FIGS. 6 and 7 consists of an upper part 11a with a smaller diameter, which is connected to the lower mixing tube 11 via a flange connection 27. The flange 27 is covered by a hood 28 to prevent the mix from being deposited on the flange 27.
  • each mixing tube 11-14, 19 consists of outlet openings 24 which break through the walls of the respective mixing tube.
  • a closure slide 23 is arranged here, which consists of individual closure segments 25 which are connected to one another.
  • the closure segments 25 can be brought into register with the outlet openings 24, or can with a corresponding displacement or rotation of the closure slide these outlet openings are fully or partially released so that the bulk material 2 can flow into the respective mixing tube in a controlled manner in the directions of the arrows 5, 6, 9, 10 drawn.
  • the slide valve 23 can be slidably arranged in the arrow directions 26 in the associated mixing tube. Assigned actuating rods can be used here to drive the closing slide 23, which are coupled to a drive 20, 21 (not shown in detail).

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
EP92106478A 1992-04-15 1992-04-15 Dispositif pour mélanger des particules en vrac dans un récipient Withdrawn EP0565755A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP92106478A EP0565755A1 (fr) 1992-04-15 1992-04-15 Dispositif pour mélanger des particules en vrac dans un récipient

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92106478A EP0565755A1 (fr) 1992-04-15 1992-04-15 Dispositif pour mélanger des particules en vrac dans un récipient

Publications (1)

Publication Number Publication Date
EP0565755A1 true EP0565755A1 (fr) 1993-10-20

Family

ID=8209547

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92106478A Withdrawn EP0565755A1 (fr) 1992-04-15 1992-04-15 Dispositif pour mélanger des particules en vrac dans un récipient

Country Status (1)

Country Link
EP (1) EP0565755A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1533022A2 (fr) * 2003-11-24 2005-05-25 Coperion Waeschle GmbH & Co. KG Silo mélangeur pour le stockage et mélange de solides fluides, notamment de poudres

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE560659C (de) * 1930-12-16 1932-10-05 Chemische Ind Silo
FR1035892A (fr) * 1951-04-18 1953-09-01 Silo
DE1217756B (de) * 1962-12-18 1966-05-26 Basf Ag Vorrichtung zum Mischen von Schuettguetern
US3268215A (en) * 1964-07-31 1966-08-23 Acheson Ind Inc Blending apparatus
FR1566029A (fr) * 1967-05-22 1969-05-02
US3539154A (en) * 1968-12-04 1970-11-10 Phillips Petroleum Co Blending apparatus
US3936037A (en) * 1974-05-22 1976-02-03 Allied Industries, Inc. Vented gravity blender
EP0019446A1 (fr) * 1979-05-14 1980-11-26 Union Carbide Corporation Procédé et appareil pour mélanger des substances granulaires
DE8436847U1 (de) * 1984-12-15 1985-08-22 AVT Anlagen- und Verfahrenstechnik GmbH, 7981 Vogt Einrichtung zum Mischen von Schüttgut
US4978227A (en) * 1986-04-03 1990-12-18 Fuller Company Blender for solid particulate material

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE560659C (de) * 1930-12-16 1932-10-05 Chemische Ind Silo
FR1035892A (fr) * 1951-04-18 1953-09-01 Silo
DE1217756B (de) * 1962-12-18 1966-05-26 Basf Ag Vorrichtung zum Mischen von Schuettguetern
US3268215A (en) * 1964-07-31 1966-08-23 Acheson Ind Inc Blending apparatus
FR1566029A (fr) * 1967-05-22 1969-05-02
US3539154A (en) * 1968-12-04 1970-11-10 Phillips Petroleum Co Blending apparatus
US3936037A (en) * 1974-05-22 1976-02-03 Allied Industries, Inc. Vented gravity blender
EP0019446A1 (fr) * 1979-05-14 1980-11-26 Union Carbide Corporation Procédé et appareil pour mélanger des substances granulaires
DE8436847U1 (de) * 1984-12-15 1985-08-22 AVT Anlagen- und Verfahrenstechnik GmbH, 7981 Vogt Einrichtung zum Mischen von Schüttgut
US4978227A (en) * 1986-04-03 1990-12-18 Fuller Company Blender for solid particulate material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1533022A2 (fr) * 2003-11-24 2005-05-25 Coperion Waeschle GmbH & Co. KG Silo mélangeur pour le stockage et mélange de solides fluides, notamment de poudres
EP1533022A3 (fr) * 2003-11-24 2005-08-03 Coperion Waeschle GmbH & Co. KG Silo mélangeur pour le stockage et mélange de solides fluides, notamment de poudres

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