FR2641262A1 - Silo for storing products which flow poorly - Google Patents

Silo for storing products which flow poorly Download PDF

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Publication number
FR2641262A1
FR2641262A1 FR8811982A FR8811982A FR2641262A1 FR 2641262 A1 FR2641262 A1 FR 2641262A1 FR 8811982 A FR8811982 A FR 8811982A FR 8811982 A FR8811982 A FR 8811982A FR 2641262 A1 FR2641262 A1 FR 2641262A1
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FR
France
Prior art keywords
silo
screws
hoppers
chamber
hopper
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
FR8811982A
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French (fr)
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FR2641262B1 (en
Inventor
Jacques Dutu
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.)
Fives Cail Babcock SA
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Fives Cail Babcock SA
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Filing date
Publication date
Application filed by Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Priority to FR8811982A priority Critical patent/FR2641262B1/en
Publication of FR2641262A1 publication Critical patent/FR2641262A1/en
Application granted granted Critical
Publication of FR2641262B1 publication Critical patent/FR2641262B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G33/00—Screw or rotary spiral conveyors
    • B65G33/24—Details
    • B65G33/26—Screws
    • B65G33/30—Screws with a discontinuous helical surface

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

Silo of generally parallelepipedal shape and with a horizontal flat bottom equipped with an extraction device consisting of a series of screws placed side by side on the bottom of the silo, parallel to one of its sides, so as to cover the entire bottom of the silo and ensure transfer of the stored products to a series of hoppers arranged under one end of the screws. In order to reduce the risks of clogging, the hoppers 22 are arranged edge to edge so as to leave no solid surface between them. Each hopper is fed by a plurality of screws 28, and the screw adjacent to the left edge of each hopper is driven in rotation clockwise, whereas the screw adjacent to the right-hand edge of the hopper is driven in the opposite sense, the senses of rotation of the screws situated between these two end screws being alternate.

Description

La presente invention a pour objet un silo pour le stockage de produits fibres: ayant une forme generale parallélépipédique et un fond plat horiontal, et équipé d'un dispositif d'extraction constitué par une série de vis disposées côte-à-côte sur le fond du silo, parallèlement à l un de ses cEtésS de façon à couvrir tout le fond du silo et à assurer le transport des produits stockés jusqu'à une série de trémies ou de goulottes disposées sous une extrémité des vis.  The present invention relates to a silo for the storage of fiber products: having a general parallelepiped shape and a flat horiontal bottom, and equipped with an extraction device constituted by a series of screws arranged side by side on the bottom from the silo, parallel to one of its sides so as to cover the entire bottom of the silo and to ensure the transport of the stored products up to a series of hoppers or troughs arranged under one end of the screws.

Dans les silos connus de Ce type, aucune précaution n'est prise pour é-vite- que les produits transportes par les vis soient déversé sur la one de jonction entre trémies ou goulottes et sur les parois lnciinCes de celle-ci. Dans le cas de produits fibreux, il y a donc un risque que les produits s'acccumulent sur ces surfaces et provoquent un engorgement des trémies. In known silos of this type, no precaution is taken to ensure that the products transported by the screws are poured onto the junction point between hoppers or troughs and onto the walls thereof. In the case of fibrous products, there is therefore a risk that the products accumulate on these surfaces and cause a blockage of the hoppers.

Le but de la presente invention est de remédier à cet inconvénient en concevant le silo et le dispositif d'extraction de telle sorte que les produits transportes par les vis soient déversés exclusivement dans la partie centrale des trémies. The object of the present invention is to remedy this drawback by designing the silo and the extraction device so that the products transported by the screws are discharged exclusively into the central part of the hoppers.

Le silo objet de la présente invention est caractérisé en ce que les trémies sont disposées bord a bord de façon a ne laisser subsister aucune surface pleine entre elles, en ce que chaque trémie est aiimentée par plusieurs vis et en ce que la vis adjacente au bord gauche de chaque trémie est entrainée en rotation dans le sens des aiguilles d'une montre tandis que la vis adjacente au bord droit de la trémie est entrainée en sens inverse, les sens de rotation des vis situées entre ces de vis extrêmes étant alternés. The silo object of the present invention is characterized in that the hoppers are arranged edge to edge so as to leave no solid surface between them, in that each hopper is fed by several screws and in that the screw adjacent to the edge the left of each hopper is rotated clockwise while the screw adjacent to the right edge of the hopper is driven in the opposite direction, the directions of rotation of the screws located between these end screws being alternated.

Suivant un mode de réalisation préféré, le silo comporte à sa base une chambre longitudinale disposée latéralement et sur toute la longueur du silo, la communication entre cette chambre et l intérieur du silo étant ininterrompue sur toute sa longueur les trémies sont raccordées au fond de ladite chambre et les vis traversent ladite chambre; la partie des vis traversant ladite chambre est dépourvue de filet et munie de doigt de désagrégation
4vantageusement, i e= parois du silt et les parois longitudinales des tremies divergent de haut en bas.According to a preferred embodiment, the silo comprises at its base a longitudinal chamber disposed laterally and over the entire length of the silo, the communication between this chamber and the interior of the silo being uninterrupted over its entire length the hoppers are connected to the bottom of said chamber and the screws pass through said chamber; the part of the screws passing through said chamber is devoid of thread and provided with disintegrating finger
Advantageously, ie = walls of the silt and the longitudinal walls of the hoppers diverge from top to bottom.

De préférence, les vis comprendront au moins de partir a pas différents ou c pas continuement variable. Preferably, the screws will include at least starting from different pitches or c not continuously variable.

D'autres caractéristiques de l'invention apparaitront a la lecture de la description qui suit et se réfère aux dessins l'accompagnant qui montrent, b. titre d'exemple non limitatif, une forme de réalisation de l'invention et sur lesquels :
La figure 1 est une vue en coupe verticale du silo conforme à 1 'invention;
La figure 2 est une coupe verticale, dans le plan vertical des trémies; et
La figure 3 est une vue analogue A la figure 2 illustrant une variante.Other characteristics of the invention will appear on reading the description which follows and refers to the accompanying drawings which show, b. by way of nonlimiting example, an embodiment of the invention and in which:
Figure 1 is a vertical sectional view of the silo according to one invention;
Figure 2 is a vertical section, in the vertical plane of the hoppers; and
Figure 3 is a view similar to Figure 2 illustrating a variant.

Le silo représenté sur les dessins est destiné au stockage d'écorces d'eucalyptus pour l'alimentation du foyer d une chaudière. The silo shown in the drawings is intended for the storage of eucalyptus bark for the supply of the hearth of a boiler.

Le silo 10 a une section rectangulaire et comprend un fond plat horizontal 12 et quatre parois 14 qui convergent vers le haut de sorte que la section du silo est plus grande a sa base qu'à son sommet. Cette construction évite la formation de voûtes dans le silo.  The silo 10 has a rectangular section and comprises a horizontal flat bottom 12 and four walls 14 which converge upwards so that the section of the silo is larger at its base than at its top. This construction prevents the formation of vaults in the silo.

Le stlo est ferm par un couvercle 16 pourvu d un orifice de remplissage 18 sous lequel est placée une goulotte oscillante Ou tnut autre dispositif permettant de répartir les produits sur toute la longueur du silo. The stlo is closed by a cover 16 provided with a filling orifice 18 under which is placed an oscillating chute Or tnut other device making it possible to distribute the products over the entire length of the silo.

Une chambre allongée 20 est accolée à l un des grands cotés du silo a a base et communique avec l intérieur du silo sur toute sa longueur et toute sa hauteur, Des trémies 22 sont raccordées au fond de la chambre 20i elles sont disposées bord-a-bord de sorte qu'il ne subsiste aucune surface pleine au fond de la chambre 20, comme on le voit sur les figures 2 et -.. L'extrémité inférieure de chaque trémie est raccordée à une goulotte d'alimentation 24 du foyer 26 de la chaudière.Les de parois 27 des trémies qui sont parallèles å la direction longitudinale de la chambre 20 divergent légèrement de haut en bas de façon u diminuer le risque de bourrage
Des vis de transport 28 sont disposées au-dessus du fond du silo, parallèlement à ses petits cotés et sur toute sa longueur. Chaque vis comporte un arbre supporté à ses deux extrémités par de paliers 30 fiés sur les parois opposées du silo et de la chambre 20, a l'extérieur de ceux-ci, et accouplé a un groupe moto-réducteur a vitesse variable permettant de l entrainer en rotation.L'entrainement individuel des vis permet de les faire tourner à des vitesses différentes. 5r la moitié de la vis attenante a la chambre le le filet a un pas nettement plus grand que sur l'autre moitié. La partie terminale de l'arbre située dans la chambre 20, aff-dessus des trémie 225 est dépourvue de filet et comporte des doigts 34- permettant de désagréger les agglomérats qui auraient pu se former pendant le transport des produits par les vis.An elongated chamber 20 is attached to one of the long sides of the silo aa base and communicates with the interior of the silo over its entire length and its entire height. Hoppers 22 are connected to the bottom of the chamber 20i they are arranged edge-to- edge so that no solid surface remains at the bottom of the chamber 20, as can be seen in FIGS. 2 and -. The lower end of each hopper is connected to a feed chute 24 of the hearth 26 of The walls 27 of the hoppers which are parallel to the longitudinal direction of the chamber 20 diverge slightly from top to bottom so as to reduce the risk of blockage.
Transport screws 28 are arranged above the bottom of the silo, parallel to its short sides and over its entire length. Each screw has a shaft supported at its two ends by bearings 30 secured on the opposite walls of the silo and the chamber 20, outside of these, and coupled to a variable speed motor-reduction unit allowing the drive in rotation. The individual drive of the screws allows them to rotate at different speeds. 5r half of the screw adjoining the chamber the thread has a noticeably larger pitch than on the other half. The end part of the shaft located in the chamber 20, above the hopper 225 is devoid of thread and has fingers 34- making it possible to disaggregate the agglomerates which could have formed during the transport of the products by the screws.

Chaque trémie 22 est alimentée par plusieurs vis dont le nombre peut entre pair OU impair. Dans touts les cas, les deux vis adjacentes aux bords latéraux de deu trémies voisines sont situées de part et d'autre du plan vertical contenant l'arête de jonction 36 de ces bords et la vis située à droite de ce plan tourne dans le sens des aiguilles d'une montre tandis que la vis située a gauche tourne en sens inverse; de meme la vis située à l extrémité gauche du silo tourne dans le sens des aiguilles d'une montre, tandis que celle située à î 'extrémité droite tourne en sens inverse. Each hopper 22 is fed by several screws, the number of which may be between even OR odd. In all cases, the two screws adjacent to the lateral edges of two neighboring hoppers are located on either side of the vertical plane containing the junction edge 36 of these edges and the screw located to the right of this plane turns in the direction clockwise while the screw on the left turns in the opposite direction; similarly the screw located at the left end of the silo turns clockwise, while the one located at the right end turns in the opposite direction.

Les sens de rotation des autres vis, associées a chaque trémie, et situées entre les vis extrêmes, sont alternés. Le sens d'enroulement des filets des vis est choisi, en fonction de leur sens de rotation, pour que les produits soient transportés par toutes les vis vers la chambre 20 et les trémies 22. Cette construction permet de déverser les produits transportés par les vis dans la partie centrale des trémies et d'éviter qu'ils tombent sur les arêtes de jonction et sur les parois latérales des trémies où ils pourraient rester accrochés et s'accumuler pour finalement conduire à l'obturation des trémies. The directions of rotation of the other screws, associated with each hopper, and located between the end screws, are alternated. The direction of winding of the threads of the screws is chosen, as a function of their direction of rotation, so that the products are transported by all the screws to the chamber 20 and the hoppers 22. This construction makes it possible to discharge the products transported by the screws in the central part of the hoppers and to avoid them falling on the junction edges and on the side walls of the hoppers where they could remain hooked and accumulate to finally lead to the obstruction of the hoppers.

Des trappes de visite --.8 sont prévues sur le plafond de la chambre 20 et permettent éventuellement de désengorger les trémies.  Inspection hatches - 8 are provided on the ceiling of the chamber 20 and possibly make it possible to unclog the hoppers.

Au lieu d'être formées de de parties a pas différents, leE vis pourraient comporte un filet a pas variable de manière conte nue d - une extremité a I 1 autre de la vis.  Instead of being formed from parts with different pitches, the screw could comprise a thread with variable pitch in a contiguous manner from one end to the other of the screw.

I1 est bien entendu que toute- les modifications qui peuvent être apportées au-; modes de réalisation décrits par l'emploi de moyens techniques équivalents entrent danr le cadre de l'invention.  It is understood that all the modifications that can be made to the; embodiments described by the use of equivalent technical means fall within the scope of the invention.

Claims (4)

REVENDICATIONS 1. Silo de forme généralement parallélépipédique et à fond plat horizontal équipé d'un dispositif d'extraction constitué par une série de vis disposées côte-à-côte sur le fond du silo, parallèlement a l un de ses côtes, de façon à couvrir tout le fond du silo et a assurer le transport des produits stockés jusqu'à une série de trémies disposées souks une e."trémité des vis caractérise en ce que les trémies (22) sont disposées bord-à-bord de façon a ne laisser subsister aucune surface pleine entre elles, en ce que chaque trémie est alimentée par plusieurs vis C28;;, et en ce que la vis adjacente au bord gauche de chaque trémie est entrainée en rotation oans le sens des aiguilles d une montre, tandis que la vis adjacente au bord droit de la trémie est entrai née en sens inverse, les sens de rotation-des vis situées entre ces deux vis extrêmes étant alternés.1. Silo of generally parallelepiped shape and with a horizontal flat bottom equipped with an extraction device constituted by a series of screws arranged side by side on the bottom of the silo, parallel to one of its ribs, so as to cover all the bottom of the silo and to ensure the transport of the stored products up to a series of hoppers arranged under an e. "end of the screws characterized in that the hoppers (22) are arranged edge-to-edge so as to leave no residue no solid surface between them, in that each hopper is fed by several screws C28 ;;, and in that the screw adjacent to the left edge of each hopper is rotated in a clockwise direction, while the screw adjacent to the right edge of the hopper is driven in the opposite direction, the directions of rotation of the screws located between these two extreme screws being alternated. 2. Silo selon la revendication 1 caractérisé en ce qu'il comporte a sa base une chambre longitudinale (20) disposée latéralement et sur toute la longueur du silo (10), la communication entre cette chambre et l'intérieur du silo étant ininterrompue sur toute la longueur du silo, en ce que les dites trémies (22) sont raccordées au fond de ladite chambre, et en ce que les vis (28) traversent ladite chambre. 2. Silo according to claim 1 characterized in that it comprises at its base a longitudinal chamber (20) disposed laterally and over the entire length of the silo (10), the communication between this chamber and the interior of the silo being uninterrupted on the entire length of the silo, in that said hoppers (22) are connected to the bottom of said chamber, and in that the screws (28) pass through said chamber. Silo selon la revendication 2, caractérisé en ce que la Silo according to claim 2, characterized in that the partie des vis (28) traversant ladite chambre est dépourvue de filet et munie de doigts de désagrégation 4. Silo selon la revendication 1, 2 ou 7s5 caractérisé en ce part of the screws (28) passing through said chamber is devoid of thread and provided with disintegration fingers 4. Silo according to claim 1, 2 or 7s5 characterized in that que les parois longitudinales (27) des trémies divergent de that the longitudinal walls (27) of the hoppers diverge from haut en bas. top to bottom. 5. Silo selon les revendications 1. 2. 3 ou 4, caractérisé en ce que les vis t2SS comprennent au moins deun parties a pas 5. Silo according to claims 1. 2. 3 or 4, characterized in that the t2SS screws comprise at least deun parts not différents. different. 6. Si 1 o sel on 1 une quelconque des revendications précédentes, caractérisé en ce que les parois du silo convergent vers le haut. 6. If 1 o sel on 1 any one of the preceding claims, characterized in that the walls of the silo converge upwards.
FR8811982A 1988-09-14 1988-09-14 SILO FOR STORING DIFFICULT FLOW PRODUCTS Expired - Fee Related FR2641262B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8811982A FR2641262B1 (en) 1988-09-14 1988-09-14 SILO FOR STORING DIFFICULT FLOW PRODUCTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8811982A FR2641262B1 (en) 1988-09-14 1988-09-14 SILO FOR STORING DIFFICULT FLOW PRODUCTS

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FR2641262A1 true FR2641262A1 (en) 1990-07-06
FR2641262B1 FR2641262B1 (en) 1991-05-03

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5437318A (en) * 1993-11-22 1995-08-01 The Sandbagger Corp Power-driven apparatus for dispensing fluent material into containers
WO2010090574A1 (en) * 2009-02-03 2010-08-12 Envac Ab A vacuum operated waste collection container and a use of the container
EP2248772A1 (en) * 2009-05-04 2010-11-10 Ardagh Glass GmbH Device for pre-heating batch containing cullet
ES2424683A1 (en) * 2013-02-06 2013-10-07 Jesús Alcantud, S.A. Silo for storage and dosage of pulverulent products (Machine-translation by Google Translate, not legally binding)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869714A (en) * 1956-01-23 1959-01-20 Gump B F Co Conveyor construction
DE3109562A1 (en) * 1980-03-24 1981-12-24 Machinefabriek voor Molenbouw J. Schimmel B.V., 7418 Deventer Device for discharging material from a silo
DE3526841A1 (en) * 1984-07-27 1986-02-06 Aktiebolag Tomal, Vessigebro Apparatus for discharging, especially metering, pulverulent or granular material from a storage container

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869714A (en) * 1956-01-23 1959-01-20 Gump B F Co Conveyor construction
DE3109562A1 (en) * 1980-03-24 1981-12-24 Machinefabriek voor Molenbouw J. Schimmel B.V., 7418 Deventer Device for discharging material from a silo
DE3526841A1 (en) * 1984-07-27 1986-02-06 Aktiebolag Tomal, Vessigebro Apparatus for discharging, especially metering, pulverulent or granular material from a storage container

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5437318A (en) * 1993-11-22 1995-08-01 The Sandbagger Corp Power-driven apparatus for dispensing fluent material into containers
WO2010090574A1 (en) * 2009-02-03 2010-08-12 Envac Ab A vacuum operated waste collection container and a use of the container
AU2010211396B2 (en) * 2009-02-03 2015-01-15 Envac Ab A vacuum operated waste collection container and a use of the container
EP2248772A1 (en) * 2009-05-04 2010-11-10 Ardagh Glass GmbH Device for pre-heating batch containing cullet
US8099981B2 (en) 2009-05-04 2012-01-24 Ardagh Glass Gmbh Apparatus for preheating batches of glass cullet
ES2424683A1 (en) * 2013-02-06 2013-10-07 Jesús Alcantud, S.A. Silo for storage and dosage of pulverulent products (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
FR2641262B1 (en) 1991-05-03

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