EP0144507A2 - Silo avec deux chambres à mélange - Google Patents

Silo avec deux chambres à mélange Download PDF

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Publication number
EP0144507A2
EP0144507A2 EP84108034A EP84108034A EP0144507A2 EP 0144507 A2 EP0144507 A2 EP 0144507A2 EP 84108034 A EP84108034 A EP 84108034A EP 84108034 A EP84108034 A EP 84108034A EP 0144507 A2 EP0144507 A2 EP 0144507A2
Authority
EP
European Patent Office
Prior art keywords
silo
chamber
space
partition
mixing
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
EP84108034A
Other languages
German (de)
English (en)
Other versions
EP0144507A3 (en
EP0144507B1 (fr
Inventor
Werner Krauss
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.)
Claudius Peters AG
Original Assignee
Claudius Peters 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 Claudius Peters AG filed Critical Claudius Peters AG
Priority to AT84108034T priority Critical patent/ATE33561T1/de
Publication of EP0144507A2 publication Critical patent/EP0144507A2/fr
Publication of EP0144507A3 publication Critical patent/EP0144507A3/de
Application granted granted Critical
Publication of EP0144507B1 publication Critical patent/EP0144507B1/fr
Expired 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
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/4092—Storing receptacles provided with separate mixing chambers

Definitions

  • the invention relates to a
  • the inner silo part has circular embankment surfaces, below which the annular emptying chamber for the outer silo space is arranged. This is intended to create good extraction conditions for the outer silo space, which are as favorable as those in the inner silo space, the extraction devices of which are centrally located.
  • the well-known silo is not intended for a mixing function, which among other things It can be seen that no mixing chamber is assigned to the inner silo space and that the annular emptying chamber for the outer silo space neither has the strong ventilation that would be necessary for the homogenization of the material in a mixing chamber, nor the height that is necessary for the volume expansion of the in Homogenization of goods in a mixing chamber is required.
  • the known emptying chamber is not a mixing chamber; Because a mixing chamber is understood to mean a relaxed emptying chamber connected downstream of a silo room, which has such a height and strong ventilation that the material withdrawn from the silo not only simply passes through this chamber, but is also circulated in a considerable volume in it by ventilation of different strengths Homogenization is thereby carried out (DE-PS 15 07 81. Such mixing chambers are therefore also referred to as homogenizing chambers.)
  • the double silo mentioned at the outset has proven to be particularly useful, inter alia, because it combines good emptying capacity of both silo spaces with good static properties.
  • the ring-shaped emptying chamber for the outer silo space is created below the slope surface of the inner silo space in the known double silo, without the static Conditions - in the area of the silo bottom would deteriorate; because the embankment areas in the inner silo room must be provided anyway, and the central floor area of the inner silo room can be placed directly on the grown floor or the main silo floor.
  • the invention has for its object to provide such a silo arrangement in which mixing chambers are connected downstream of the two silo spaces.
  • the annular chamber includes a central chamber connected to the silo space formed in the inner silo part via an essentially vertical chamber partition wall, and that both chambers are designed as vented mixing chambers.
  • the vertical silo partition can be left untouched as an important static element.
  • the outer part of the silo can also be left in its simple shape, which sits directly on the grown soil or the main silo floor.
  • the horizontal components delimiting the inner silo space at the bottom are correspondingly more extensive and therefore more structurally problematic, and because of the mixing chambers to be arranged underneath, the direct support from the grown ground or the main silo floor is withdrawn.
  • the annular chamber is divided into a plurality of separate chambers, the radial partition walls located between these separate chambers representing additional stiffening ribs.
  • the inner silo chamber over is connected to the inner mixing chamber at least one mar syndromemi g en shaft, which is brought down to near the bottom of the inner mixing chamber. It is expedient to provide a plurality of shafts which are distributed uniformly over the circumference and open to the inner silo space with a relatively large cross-sectional area, which preferably accounts for at least about 5%, better still at least about 10%, of the inner silo floor area. Since the shafts then have dimensions on the order of several meters in each direction, there are no afterflow problems.
  • the shaft floors emulate the inner silo room more than the others areas delimiting below and, if necessary, can be alternately ventilated, so that the trough formation within the main silo room, which is significantly involved in the mixing action in a mixing chamber silo, originates from the shafts.
  • the mixing chambers assigned to the two silo spaces can expediently be equipped with extraction devices which can be operated independently of one another. However, it can also be advantageous if they can be connected to one another instead or in addition. The latter is useful, for example, if the same or mixed material is to be stored in both silo spaces.
  • the arrangement can also be such that the mixing chambers are connected in series, that is to say that the material which has first passed through one mixing chamber then passes into the other mixing chamber and is homogenized there with the material originating from the other silo room .
  • the mixing chambers can be constructed in a cascade shape, that is to say that their dividing wall in the upper region contains at least one overflow opening through which the material flowing up in the mixing chamber which initially flows overflows into the second mixing chamber.
  • the main silo floor 2 which is designed as a common base plate for all silo parts, rests on the foundation 1 via suitable supports. It could also be arranged on the grown floor, which would require a slightly different but known discharge arrangement.
  • the cylindrical outer wall 3 of the silo rises on the outside, and concentrically with it, the equally cylindrical partition wall 4. In between is the annular outer silo space 5, while the inner silo space 6 is located inside the silo partition. Both silo rooms are closed by the silo ceiling 7 above.
  • the floor of the outer silo room 5 is formed by the main silo floor 2.
  • the lower boundary of the inner silo space 6 is largely at such a height above the main silo floor 2 that the height necessary for mixing chambers is present in between.
  • a cylindrical wall 9, arranged concentrically with the silo walls 3, 4, divides an inner mixing chamber 10 and an outer, partially annular mixing chamber 11. It is therefore referred to here as a chamber partition 9. At most of its height, it is cylindrically closed, as can be seen in FIG. 4. It therefore forms, together with the silo partition 4, excellent static conditions for supporting the chamber ceilings 8, which carry the content of the inner silo space 6.
  • the chamber partition 9 is connected to the silo partition 4 by wall pairs 12 on two diametrically opposite sides.
  • the chamber partition 9 has passage openings 14 in the area near the bottom.
  • the material stored in the main silo room 6 can therefore flow through the two shafts 13 and the passage openings 14 into the inner mixing chamber 10 if it is sufficiently fluidized by floor ventilation.
  • Ventilation devices 15 on the bottom of the shafts 13 serve this purpose.
  • ventilation devices 16 provided on the chamber ceilings 8, which promote the mass flow of the material to the shafts 13.
  • the same purpose is served by a conical embankment 17 above the inner mixing chamber 10 and saddle-shaped embankments 18 over a diameter running transversely to the shafts 13, which also receive lines 19 for venting the inner mixing chamber 10, which are connected to ventilation lines 20 which are connected to the silo partition 4 '' lead into the upper silo and there are open at 21.
  • the inner mixing chamber 10 is designed on the bottom with ventilation devices 22, which can be vigorously and zone-wise differently ventilated to homogenize the material contained therein, so that the material is strongly circulated therein with good mixing effects before it leaves the mixing chamber through the outlet opening 23, which leads to Avoiding short-circuit currents has a raised edge 24.
  • the outlet opening 23 leads to a discharge line 25 via suitable closure members.
  • the mixing effect of a mixing chamber silo is essentially based on two mixing processes.
  • the first mixing process takes place in the silo room when, due to the zone-wise stronger ventilation and product discharge from the more ventilated zone, a so-called discharge stream forms above it, in which the product from different stored product layers converges.
  • the second mixing process is the homogenization of the material withdrawn from the main silo room in the mixing chamber.
  • the trumpets in the inner silo space 6 are expediently emanated from the shafts 13 by pressurizing their ventilation devices 15 with compressed air more than the ventilation devices 16 in the inner silo room.
  • the strength of the ventilation is set so limited that even a limited flow of material from the Silo room takes place in the mixing chamber so that it is not flooded hydrostatically. This is possible because the shafts 13 ensure even flow of the material to the mixing chamber even with limited loosening of the material contained therein and above it loads in the silo room, even if uneven material movements (bridge formation, breakdowns) are expected due to the poor ventilation in the main silo room got to.
  • the ventilation devices 15 in the shafts 13 can be operated alternately in order to form changing mixed flows in the inner silo space 6.
  • parts of the ventilation devices 16 are designed for zone-wise stronger ventilation and trombone formation if the load on both sides of the shafts 13 in the inner silo space on the chamber ceilings 8 otherwise does not participate sufficiently well in the removal of the goods can be.
  • more than two shafts 13 can also be provided for withdrawing the material from the silo space into the mixing chamber, for example three or four shafts evenly distributed over the circumference.
  • the shaft walls 12 divide two approximately semi-ring-shaped chambers -11 from each other, which are connected to the outer silo space 5 via bottom passage openings 26 and form the mixing chambers for the latter. If more than two shafts 13 are provided, the number of these partially annular outer mixing chambers also increases accordingly.
  • Ventilation devices 27 provided at the bottom of the outer silo space 5 lead through the passage openings 26 into the outer mixing chambers, in which ventilation devices 28 lead to zones different, intensive homogenization ventilation are provided.
  • the ventilation devices 27 in the outer silo space can expediently be operated zone by zone with different intensities in order to enable the above-mentioned formation of discharge streams also in the outer silo space.
  • the outer mixing chambers 11 are vented through the lines 20 and have outlet openings 29 which, in order to avoid short-circuit current, have a raised crank 30 and lead to a discharge line via suitable closing elements. In the example shown, it is provided that they lead into the same discharge line 25 as the outlet opening 23 of the inner mixing chamber.
  • the targeted use of the mixing possibilities provided by the two silo spaces allows a long-term compensation of fluctuations in composition than would be possible if only a correspondingly larger silo were used.
  • the mixing chambers can be interconnected in a so-called cascade by providing overflow openings 31 in the upper region of the chamber partition 9, which enable the following procedure, shown in FIG. 1.
  • the material originating from the outer silo space is homogenized in the outer mixing chamber and is then not drawn off via the outlet opening 29, but instead is allowed to flow continuously through the passage opening 31 into the inner mixing chamber through a correspondingly high setting of the level of the material in the outer mixing chamber, so that not only the material originating from the inner silo space 6 but also the material overflowing from the outside is located in the inner mixing chamber, is homogenized there and can finally be drawn off through the outlet opening 23.
  • the reverse procedure could of course also be used.
  • the setting of the mixing level in the chamber from which the material is to flow into the other chamber is done by adjusting the ventilation strength.
  • the compressors provided for supplying the ventilation devices 22, 28 and possibly also 13, 27 can be regulated accordingly, so that by adjusting the ventilation, the amount of material overflowing from the one mixing chamber into the other mixing chamber and thus the mixing ratio can be adjusted.
  • Known distribution devices 32 can be used for the storage of the goods in the silo rooms. If the silo rooms work independently of each other, the distributor shown is of course set so that only one or the other silo room is loaded alternatively becomes. The same applies if the silo rooms are operated as a network and fluctuations in the composition of one and the same good are to be compensated for by phase-shifted storage in the two silo rooms or phase-shifted deduction therefrom. However, both silo rooms can also be loaded parallel to each other.
  • the advantages of the invention consist, on the one hand, in the fact that large silo volumes are provided in very compact silo construction under very favorable structural conditions.
  • the cell construction shown with a plurality of cylinders arranged one inside the other and connected to one another results in high strength and thus makes it possible, for example in the case of silo diameters of more than 20 m, to dispense with the prestressing of the reinforcement normally required, which saves considerable costs.
  • the span of the ceilings is much smaller, so that advantageous cost conditions also arise here. - Further advantages relate to the conditions of storage, deduction and mixing options. Since the horizontal paths in each silo room are comparatively short, a uniform mass flow can be achieved and thus a good use of the available silo room.
  • silo cells work individually, in parallel operation or in cascade operation from the inside to the outside or vice versa results in a wide range of mixing options with longer lengths of damping due to compositional fluctuations without the need for intermediate transport, as is often necessary with separate silo groups.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Storage Of Harvested Produce (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP84108034A 1983-11-24 1984-07-10 Silo avec deux chambres à mélange Expired EP0144507B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84108034T ATE33561T1 (de) 1983-11-24 1984-07-10 Doppel-mischkammersilo.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833342507 DE3342507A1 (de) 1983-11-24 1983-11-24 Doppel-mischkammersilo
DE3342507 1983-11-24

Publications (3)

Publication Number Publication Date
EP0144507A2 true EP0144507A2 (fr) 1985-06-19
EP0144507A3 EP0144507A3 (en) 1985-07-24
EP0144507B1 EP0144507B1 (fr) 1988-04-20

Family

ID=6215156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108034A Expired EP0144507B1 (fr) 1983-11-24 1984-07-10 Silo avec deux chambres à mélange

Country Status (4)

Country Link
US (1) US4606158A (fr)
EP (1) EP0144507B1 (fr)
AT (1) ATE33561T1 (fr)
DE (2) DE3342507A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0366907A1 (fr) * 1988-10-19 1990-05-09 Ibau Hamburg Ingenieurgesellschaft Industriebau Mbh Silo pour stocker, doser et homogénéiser des marchandises en vrac
KR101239504B1 (ko) * 2007-12-27 2013-03-05 호흘란트 나텍 게엠베하 연질 덩어리 식품의 절단
EP4410707A1 (fr) * 2022-11-14 2024-08-07 RK Verwaltungs GmbH Silo pour le stockage séparé d'un produit sec et d'un produit humide

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4989380A (en) * 1988-07-28 1991-02-05 Ibau Hamburg Ingenieurgeselllschaft Industriebau Mbh Silo for pulverulent and fine-grained bulk materials
DE3926798C2 (de) * 1989-08-14 1998-06-04 Krupp Polysius Ag Großraumsilo
US4943163A (en) * 1989-09-22 1990-07-24 Dynamic Air Inc. Blender for pneumatically mixing batches of dry granular materials by tumbling
DE3933314A1 (de) * 1989-10-05 1991-04-11 Krupp Polysius Ag Mehrkammersilo
US5074670A (en) * 1990-05-11 1991-12-24 Fuller Company Blender with feed rate control
US5319902A (en) * 1991-06-12 1994-06-14 A. Ahlstrom Mass tower and method of making the same
WO2003070605A1 (fr) * 2002-02-21 2003-08-28 Yamazaki, Akehiko Reservoir d'alimentation contenant du liquide, de la poudre ou des grains
FR2909984B1 (fr) * 2006-12-18 2010-12-10 Degremont Silo pour le stockage de produits en vrac, notamment des boues sechees de stations d'epuration.
CN109569395B (zh) * 2018-12-26 2021-08-20 李世旭 一种提高水泥厂粉体库均化系数的下料方法

Family Cites Families (22)

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Publication number Priority date Publication date Assignee Title
US1988184A (en) * 1933-10-23 1935-01-15 Dravo Contracting Company Bin structure
DE1138608B (de) * 1960-09-07 1962-10-25 Peters Ag Claudius Verfahren und Einrichtung zum pneumatischen Mischen von staub-foermigem oder feinkoernigem trockenem Gut
DE1507888C3 (de) * 1966-06-22 1975-07-31 Claudius Peters Ag, 2000 Hamburg Vorrichtung zum Mischen von Schüttgut mit belüftbarem Silo
DE1531003A1 (de) * 1967-06-09 1970-02-12 Polysius Ag Etagensiloturm
FR2110817A5 (fr) * 1970-10-30 1972-06-02 Constantin E
US3648985A (en) * 1970-12-01 1972-03-14 Fuller Co Blending apparatus
CA1076101A (fr) * 1975-12-30 1980-04-22 Kenneth C. Yi Melangeur pour matieres granuleuses
JPS5331334A (en) * 1976-09-03 1978-03-24 Hitachi Zosen Corp Multifold cylindrical silo
DE2657597C2 (de) * 1976-12-18 1982-02-04 Claudius Peters Ag, 2000 Hamburg Schüttgutsilo mit Homogenisierkammer
FR2374073A1 (fr) * 1976-12-18 1978-07-13 Peters Ag Claudius Silo a chambre de melange pour matieres en vrac
DE2727499B2 (de) * 1977-06-18 1980-11-13 Claudius Peters Ag, 2000 Hamburg Misch- oder Homogenisierkammer in einem Silo
US4375335A (en) * 1977-06-30 1983-03-01 Klein Albenhausen Heinrich Silo combination for mixing stored material
US4185926A (en) * 1978-02-28 1980-01-29 Westinghouse Electric Corp. Safe-geometry pneumatic nuclear fuel powder blender
DE2827991C2 (de) * 1978-06-26 1988-01-21 Claudius Peters Ag, 2000 Hamburg Schüttgutsilo mit Mischkammer
DE3002030A1 (de) * 1980-01-21 1981-07-23 Krupp Polysius Ag, 4720 Beckum Pneumatisches mischsilo
NL8000398A (nl) * 1980-01-22 1981-08-17 Pelt & Hooykaas Werkwijze voor het afwerken van een dakconstructie, galerij, balkon of terras.
DE3015068C2 (de) * 1980-04-18 1984-12-13 Claudius Peters Ag, 2000 Hamburg Mehrfachsilo
DE3040749A1 (de) * 1980-10-29 1982-06-03 Claudius Peters Ag, 2000 Hamburg Verfahren zum mischen von schuettgut in einem mischsilo
US4373820A (en) * 1981-03-17 1983-02-15 Jesse Browning Apparatus for mixing reclaimed and virgin powder for use in spray booths
EP0064572A3 (fr) * 1981-05-07 1982-12-15 Bold-Fertigbau GmbH & Co. Silo, en particulier composé d'éléments préfabriqués en béton armé
DE3143387A1 (de) * 1981-11-02 1983-05-11 Krupp Polysius Ag, 4720 Beckum Verfahren zum betrieb eines durchlaufmischsilos
US4506985A (en) * 1983-05-20 1985-03-26 Claudius Peters Ag Mixing chamber silo for loose material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0366907A1 (fr) * 1988-10-19 1990-05-09 Ibau Hamburg Ingenieurgesellschaft Industriebau Mbh Silo pour stocker, doser et homogénéiser des marchandises en vrac
KR101239504B1 (ko) * 2007-12-27 2013-03-05 호흘란트 나텍 게엠베하 연질 덩어리 식품의 절단
EP4410707A1 (fr) * 2022-11-14 2024-08-07 RK Verwaltungs GmbH Silo pour le stockage séparé d'un produit sec et d'un produit humide

Also Published As

Publication number Publication date
EP0144507A3 (en) 1985-07-24
ATE33561T1 (de) 1988-05-15
EP0144507B1 (fr) 1988-04-20
DE3470464D1 (en) 1988-05-26
US4606158A (en) 1986-08-19
DE3342507A1 (de) 1985-06-05

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