EP0550778B1 - Silo pour le stockage et mélange de matières en vrac pulvérulentes, à grains fins, et fluidisables - Google Patents

Silo pour le stockage et mélange de matières en vrac pulvérulentes, à grains fins, et fluidisables Download PDF

Info

Publication number
EP0550778B1
EP0550778B1 EP92100185A EP92100185A EP0550778B1 EP 0550778 B1 EP0550778 B1 EP 0550778B1 EP 92100185 A EP92100185 A EP 92100185A EP 92100185 A EP92100185 A EP 92100185A EP 0550778 B1 EP0550778 B1 EP 0550778B1
Authority
EP
European Patent Office
Prior art keywords
silo
discharge chamber
tray
outlet
silo according
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.)
Expired - Lifetime
Application number
EP92100185A
Other languages
German (de)
English (en)
Other versions
EP0550778A1 (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.)
Individual
Original Assignee
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
Priority to DK92100185.5T priority Critical patent/DK0550778T3/da
Priority to ES92100185T priority patent/ES2069319T3/es
Priority to EP92100185A priority patent/EP0550778B1/fr
Priority to DE59201726T priority patent/DE59201726D1/de
Publication of EP0550778A1 publication Critical patent/EP0550778A1/fr
Application granted granted Critical
Publication of EP0550778B1 publication Critical patent/EP0550778B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/72—Fluidising devices
    • 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
    • B01F33/406—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles with gas supply only at the bottom
    • B01F33/4061—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles with gas supply only at the bottom through orifices arranged around a central cone

Definitions

  • the invention relates to a silo according to the preamble of claim 1.
  • a silo of the type mentioned above is known.
  • the shell of this known silo is arranged above the actual silo floor. In this way, two ring zones are formed, one through the shell, which extends from the shell outer diameter to the emptying chamber and one which extends from the bottom outer diameter into the emptying chamber, i.e. passes into the bottom of the emptying chamber.
  • the ring-shaped shell which is also covered with radial air conveyor troughs, and with its inner diameter ends immediately on the outer circumference of the emptying chamber.
  • the bowl forms a kind of elevated terrace.
  • the emptying chamber is vented.
  • a silo of this type has not become established due to high manufacturing costs and unsatisfactory mixing results. Due to the frequently occurring short-circuit flow through the emptying chamber inlets on the terrace above, even if there was no ventilation here, the material inlet from the lower, rear silo zone did not take place or only to a very limited extent. The reason for this was a lack of frictional overlap and the relatively strong ventilation of the entire emptying chamber surface. The circular baselines, from which the main subtraction was made, were too close together.
  • a silo is also known for the storage and mixing of corresponding bulk materials, in which two-stage emptying channels are provided, which also lead to an outlet in the form of a housing, inclined flat.
  • the actual load-bearing floor structure is formed by a central cone in which the outlet housing and part of the drainage channels are arranged.
  • the emptying channels forming the lower stage start on the outer circumference of the silo and lead to the outlet housing. Good inlet openings are provided on the outer circumference in the area of the upper stage of the emptying channels.
  • the upper emptying channel to the silo room is only partially covered by the outlet housing, the lower emptying channel completely by the upper emptying channel.
  • the alternating flows of material from the upper and lower emptying stages flowing into the outlet housing are shut off and controlled by just one metering slide.
  • a parallel conveyance from a loosening escape into the outlet housing is not possible because the bulk material always flows preferentially from the upper ventilated level and the Funding blocked from the lower level.
  • the material is drawn off from an inner circular baseline from the upper stage as well as from an outer circular baseline above the material inlet openings for the lower stage. So there is an inner and an outer drum circle, which leads to the mass exchange of the bulk material.
  • This silo has generally proven itself in practice. Its manufacturing costs are advantageous and justifiable for a new building.
  • the invention is therefore based on the object to provide a silo of the type mentioned, in particular to renovate silos with flat, disc-shaped bottoms, while taking into account the static conditions, and at the same time for an economical working method with a high mixing effect and a good use of space to care.
  • flat inclined silo floor is used to create the appropriate silo construction. Only small dimensions are required for the central emptying chamber, and surprisingly high mixing efficiencies are achieved, i.e. there is a good mass exchange of the bulk material.
  • the silo floor is the supporting disc.
  • a for example 2 to 4 meters in diameter smaller, also flat-inclined shell is poured onto this silo floor, namely in a thickness of approx. 1 m.
  • Radially arranged drainage channels are incorporated into this upper shell, which in turn are covered at the top.
  • the upper conical shell extends relatively far into the emptying chamber and forms a bottom depression in the area of the outlet, which is formed by an outlet housing with subsequent shut-off and metering slides.
  • the emptying chamber which can basically be designed differently, e.g. is also cylindrical, but is preferably conical (covers claim 2), covers the bottom depression and the chamber inlets of the embedded emptying channels formed practically by the end of the shell.
  • the annular bottom section formed on the silo wall is advantageously tangentially covered with air conveyor channels, of which two sections with opposite slopes always lead to an emptying channel and feed it alternately with fluidized bulk material.
  • the bulk material reaches the central emptying chamber through the air conveyor channels in the emptying channels, i.e. in the area of the bottom depression.
  • air channels are also divided into ventilation sections and run radially arranged, which, as mentioned, lead into the emptying chamber.
  • Air conveyor troughs are also arranged in the bottom depression, which are permanently ventilated with the outlet housing during the silo emptying on the bottom.
  • An absolutely safe separation between aerated and non-aerated bulk material is achieved by the frictional overlap of the lower emptying channels to the upper chamber inlets.
  • the bulk material or solid-air mixture flowing into the emptying chamber communicates into the emptying chamber in accordance with the mixture pressure without flooding it.
  • the flow paths in the relief areas are short and can therefore be overcome with a low pressure difference.
  • the external loosening ring with the associated drainage channels is also important.
  • the largest mass fractions are located in this edge area, so that the largest masses must also be subtracted from here.
  • the concentrated loosening immediately in front of the drainage ducts and adequately dimensioned duct cross-sections result in a safe and constant flow while maintaining an evenly distributed air supply.
  • the central outlet opening in the silo floor also has a positive influence on the radially ventilated inlets during the emptying process due to the resulting outlet flow.
  • the emptying chamber only has the function of collecting the bulk material flowing in from both levels, the implementation of a clear friction locking technique in the alternating aerated and vented bulk material and the relief of the discharge zone for a continuous discharge.
  • the silo shown in the drawing with the cylindrical outer wall 1 has an essentially flat, load-bearing silo bottom 2 which is slightly inclined towards the center.
  • the floor 2 is supported by columns 9.
  • a bowl 3 Above the floor 2 is essentially parallel to this, i.e. also slightly inclined towards the center, a bowl 3, in which emptying channels 4 are embedded. These drainage channels are closed by removable cover plates 17.
  • Air discharge troughs are located in the emptying channels 4 12, which begin on the outer circumference, ie where the shell 3 leaves an annular bottom portion 10 free.
  • air conveying troughs 11 are arranged tangentially to the air conveying troughs 12.
  • Air conveyor channels 16 are provided in the area of the bottom depression.
  • the bottom of the outlet chamber 7 is also ventilated.
  • the air conveyor channels 11 assigned to the air conveyor channels 12 in the individual emptying channels are ventilated together with these air conveyor channels 12 (section ventilation).
  • the individual ventilation devices can be controlled differently and separately from one another.
  • the supply is advantageously carried out by separate rotary lobe blowers, which are not shown.
  • emptying and mixing drums are produced in the silo space both on the outer circumference in the vicinity of the silo wall 1 above the annular bottom section 10 and at the foot of the conical emptying chamber 5.
  • the desired mixing takes place depending on the control of the air conveyor channels.
  • the material flows through the emptying chamber 5 into the area of the bottom depression 15 to the outlet 6 and to the outlet housing 7, the metering and shut-off slides 8 ensuring appropriate quantity regulation.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Claims (8)

  1. Silo destiné au stockage et au mélangeage de matières en vrac pulvérulentes, à grains fins, et aptes à se fluidifier ; muni d'un fond porteur (2) en forme de disque légèrement incliné vers le centre, au-dessus duquel est disposée - avec un écart donné - une coque, inclinée de la même manière vers le centre (3) et d'un diamètre plus réduit, au centre de laquelle une chambre d'évacuation (5) recouvre une sortie (6), la coque et le fond de la chambre d'évacuation étant pourvus de rigoles de transport d'air (11, 13) ; caractérisé par le fait que la coque (3) avec ses rigoles de transport d'air (13) parvient largement à l'intérieur de la chambre d'évacuation (5) et forme ainsi une incurvation du fond (15) dans la zone de sortie (6), et par le fait que des voies d'évacuation couvertes (4) sont enrobées dans la coque (3) de rigoles de transport d'air (12), allant radialement de la section de fond en forme d'anneau (10) laissée libre par la coque au niveau de la circonférence extérieure, jusqu'au fond incurvé (15).
  2. Silo selon la revendication 1, caractérisé par le fait que la chambre d'évacuation (5) possède une forme conique.
  3. Silo selon la revendication 1 ou 2, caractérisé par le fait que les voies d'évacuation (4) sont recouvertes de plaques de recouvrement amovibles (17).
  4. Silo selon la revendication 1, 2 ou 3, caractérisé par le fait que le fond incurvé (15) est pourvu de rigoles de transport d'air (16).
  5. Silo selon une ou plusieurs des revendications mentionnées précédemment, caractérisé par le fait qu'un boîtier de décharge (7) muni de robinets de dosage (8) est présent au niveau de la sortie (6).
  6. Silo selon une ou plusieurs des revendications mentionnées précédemment, caractérisé par le fait que les rigoles de transport d'air (11, 12 ; 13 ; 16) sont alimentées séparément par des souffleries à pistons rotatifs correspondantes.
  7. Silo selon une ou plusieurs des revendications mentionnées précédemment, caractérisé par le fait que la chambre d'évacuation (5) est ventilée.
  8. Silo selon une ou plusieurs des revendications mentionnées précédemment, caractérisé par le fait que le diamètre mesuré au pied de la chambre d'évacuation (5) est inférieur ou égal à 0,4 fois le diamètre du silo.
EP92100185A 1992-01-08 1992-01-08 Silo pour le stockage et mélange de matières en vrac pulvérulentes, à grains fins, et fluidisables Expired - Lifetime EP0550778B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DK92100185.5T DK0550778T3 (da) 1992-01-08 1992-01-08 Silo til oplagring og blanding af støvformet, finkornet og strømningsklart styrtgods
ES92100185T ES2069319T3 (es) 1992-01-08 1992-01-08 Silo para el almacenamiento y el mezclado de materias a granel pulverulentas, de granos finos y aptas para fluidificarse.
EP92100185A EP0550778B1 (fr) 1992-01-08 1992-01-08 Silo pour le stockage et mélange de matières en vrac pulvérulentes, à grains fins, et fluidisables
DE59201726T DE59201726D1 (de) 1992-01-08 1992-01-08 Silo zum Lagern und Mischen von staubförmigen, feinkörnigen und fluidisierfähigen Schüttgütern.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92100185A EP0550778B1 (fr) 1992-01-08 1992-01-08 Silo pour le stockage et mélange de matières en vrac pulvérulentes, à grains fins, et fluidisables

Publications (2)

Publication Number Publication Date
EP0550778A1 EP0550778A1 (fr) 1993-07-14
EP0550778B1 true EP0550778B1 (fr) 1995-03-22

Family

ID=8209221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92100185A Expired - Lifetime EP0550778B1 (fr) 1992-01-08 1992-01-08 Silo pour le stockage et mélange de matières en vrac pulvérulentes, à grains fins, et fluidisables

Country Status (4)

Country Link
EP (1) EP0550778B1 (fr)
DE (1) DE59201726D1 (fr)
DK (1) DK0550778T3 (fr)
ES (1) ES2069319T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3917861B1 (fr) * 2019-02-01 2023-08-23 thyssenkrupp Industrial Solutions AG Silo avec élément d'aération amovible

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104276356A (zh) * 2013-07-03 2015-01-14 贵阳铝镁设计研究院有限公司 一种氧化铝贮仓
CN113843912B (zh) * 2021-10-13 2024-03-26 潍坊学院 一种母粒自动配料混匀装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2121616C3 (de) * 1971-05-03 1975-07-03 Claudius Peters Ag, 2000 Hamburg Vorrichtung zum Mischen von Schüttgut und Verfahren zu Ihrem Betrieb
DE3033270A1 (de) * 1980-09-04 1982-04-01 Ibau Hamburg Ingenieurgesellschaft Industriebau Mbh, 2000 Hamburg Silo fuer mehlfoermige schuettgueter, insbesondere zement
EP0399080A1 (fr) * 1989-05-26 1990-11-28 Ibau Hamburg Ingenieurgesellschaft Industriebau Mbh Silo pour matières pulvérulentes en vrac et procédé pour l'exploitation de tels silos

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3917861B1 (fr) * 2019-02-01 2023-08-23 thyssenkrupp Industrial Solutions AG Silo avec élément d'aération amovible

Also Published As

Publication number Publication date
ES2069319T3 (es) 1995-05-01
DK0550778T3 (da) 1995-06-06
EP0550778A1 (fr) 1993-07-14
DE59201726D1 (de) 1995-04-27

Similar Documents

Publication Publication Date Title
EP0294428A1 (fr) Deversement par cylindres.
EP0550778B1 (fr) Silo pour le stockage et mélange de matières en vrac pulvérulentes, à grains fins, et fluidisables
DE2547667B2 (de) Silo, insbesondere Großraumsilo für mehlförmige Schüttgüter
EP0144507B1 (fr) Silo avec deux chambres à mélange
DE2724928C2 (de) Großraumsilo für mehlförmiges Schüttgut
DE2657597C2 (de) Schüttgutsilo mit Homogenisierkammer
DE2344782A1 (de) Vorratstrichter
DE3314329A1 (de) Silo fuer mehlfoermiges schuettgut
CH430397A (de) Gravimetrische Ausgleichseinrichtung für Schüttgüter
DE3022346C2 (de) Mischsilo für Schüttgut
DE2727499A1 (de) Silo fuer schuettgut
DE3624885A1 (de) Entleerungseinrichtung fuer ein schuettgut-silo
EP0303864B1 (fr) Silo pour matières en vrac pulvérulentes et à grains serrés
DE2657596C2 (de) Mischkammersilo für Schüttgut
EP0527257B1 (fr) Silo de stockage, de dosage et de mélange par écoulement de matières en vrac susceptibles d'être fluidisées
DE2942308C2 (de) Entleerungsboden für Schüttgutsilos
EP0111294A2 (fr) Silo-mélangeur pour l'homogénéisation pneumatique de matières granuleuses et pulvérulentes
DE2827991A1 (de) Schuettgutsilo mit mischkammer
EP0400331B1 (fr) Silo à grande capacité pour produits poussiéreux ou pulvérulents
DE2518420A1 (de) Einrichtung zum mischen von fliessfaehigen koernigen oder pulverfoermigen schuettguetern
DE4328314A1 (de) Misch- und Vorratssilo für staubförmige Schüttgüter
DE2539753B1 (de) Mischsilo fuer schuettgut
AT303625B (de) Verfahren zum Mischen von Schüttgut in einem Mischsilo
EP0168414A1 (fr) Dispositif de distribution pour container de materiau pulverulent.
DE4224054C2 (de) Großraumsilo

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19921110

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE DK ES FR IT

17Q First examination report despatched

Effective date: 19940204

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE DK ES FR IT

REF Corresponds to:

Ref document number: 59201726

Country of ref document: DE

Date of ref document: 19950427

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2069319

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20110125

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20110126

Year of fee payment: 20

Ref country code: DE

Payment date: 20101110

Year of fee payment: 20

Ref country code: FR

Payment date: 20110201

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20110121

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59201726

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59201726

Country of ref document: DE

REG Reference to a national code

Ref country code: DK

Ref legal event code: EUP

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20120411

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20120109

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20120109