WO1999047440A1 - Device for extracting a granular, or even powder, material contained in a silo - Google Patents

Device for extracting a granular, or even powder, material contained in a silo Download PDF

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Publication number
WO1999047440A1
WO1999047440A1 PCT/FR1999/000620 FR9900620W WO9947440A1 WO 1999047440 A1 WO1999047440 A1 WO 1999047440A1 FR 9900620 W FR9900620 W FR 9900620W WO 9947440 A1 WO9947440 A1 WO 9947440A1
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WO
WIPO (PCT)
Prior art keywords
turret
relative
silo
arm
scraper
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Application number
PCT/FR1999/000620
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French (fr)
Inventor
Jean Marie Courtois
Original Assignee
Jean Marie Courtois
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 Jean Marie Courtois filed Critical Jean Marie Courtois
Priority to EP99909033A priority Critical patent/EP0984892A1/en
Priority to AU28425/99A priority patent/AU2842599A/en
Publication of WO1999047440A1 publication Critical patent/WO1999047440A1/en

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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
    • B65G65/466—Devices for emptying otherwise than from the top using screw conveyors arranged to be movable

Definitions

  • the invention relates to a device for extracting a granular or even powdery material contained in a silo.
  • Grainy materials include both sugar, clinker, fly ash and grain.
  • silos having a shape generally either cylindrical of revolution of vertical axis, or hemispherical.
  • silos are generally emptied by gravity and therefore have at their base an evacuation orifice.
  • the bottom of the silo is inclined towards the evacuation orifice and generally takes the form of a frustoconical funnel.
  • silos are known provided with a mechanical device which facilitates or regularizes the extraction of the material and, in this case, the bottom of the silo is no longer necessarily inclined but can be horizontal.
  • an extraction device is known (EP-A-471,136) comprising, in a silo whose body is a hemispherical dome:
  • This device includes:
  • the assembly must include complementary endless screws arranged radially relative to the fixed support so that the material accumulated in this cavity is moved towards the inside of the fixed support which has a sort of funnel channeling said material towards a belt conveyor or other transfer means placed under the funnel.
  • These complementary radial endless screws are associated with the support which, by its rotation about its vertical axis, can, with it, move said screws.
  • the length of the arm cannot be increased, otherwise the anchoring of the support will be requested.
  • the structure as described has various drawbacks such as an extraction flow rate reduced to around 100 m3 / h, difficult access to the drive motors. located both in the support and in the turret.
  • the invention therefore proposes to remedy these various drawbacks.
  • the subject of the invention is an extraction device of the aforementioned type comprising: a support anchored on the bottom of the silo,
  • the turret has an upper face inclined at an angle to the horizontal
  • the scraper arm is associated with this upper face by a base and with respect to the perpendicular axis of this base, the longitudinal axis of this arm is inclined by an angle P,
  • the base includes guide means and drive means in rotation about said axis perpendicular to the upper face to modify the angular position of the base of the scraper arm relative to the inclined face of the turret and thus adjust the tilt of the arm in space, this device being characterized in that:
  • the turret has at least two inclined faces on each of which is mounted a scraper arm provided with its inclined base, said inclined faces being angularly distributed so that the mass of the scraper arms is balanced and - on the other hand, at least two substantially vertical pipes whose input of each of them is located in a surrounding area to the support and through which the discharge pipes is by gravity. 4
  • FIG. 1 enlarged detail of Figure 1. Referring to the drawing, we see a silo 1 containing a material 2 granular or even powdery.
  • This silo has at least one mechanical device 3 for extracting the material.
  • this extraction device comprises a scraper arm 4 that can be tilted relative to the vertical so that, gradually, this scraper arm tilts and forces the material to move towards a discharge orifice.
  • the scraper arm 4 is associated with this upper face 7 by a base ⁇ and with respect to the perpendicular axis of this base, the longitudinal axis of this arm is inclined at an angle P - the base comprises means 9 guide and rotation drive means 10 about said axis perpendicular to the upper face 7 to modify the angular position of the base 8 of the scraper arm relative to the inclined face 7 of the turret and thus adjust the inclination of the arms in space.
  • This scraper arm can be in various forms which, in the context of the invention, will not be detailed.
  • the turret 6 and the scraper arm 4 are moved by motor means housed inside the turret or the support, so as to be protected from dust. According to the invention: 5
  • the turret 6 has at least two inclined faces 7 on each of which is mounted a scraper arm 4 provided with its inclined base, said inclined faces being angularly distributed so that the mass of the scraper arms is balanced and - d ' on the other hand, at least two substantially vertical pipes 11, the entry of each of which is located in a zone peripheral to the support and by which pipes the evacuation is effected by gravity.
  • the scraper arms are mounted opposite each other. When there are three scraper arms, these are 120 degrees out of phase, etc.
  • the extraction flow can thus be easily increased, all the more so as the cross section of the evacuation pipes poses no technical problem in order to be adapted to the maximum flow desired.
  • An advantage of a system with multiple evacuation pipes is that each pipe ends in a conveyor belt serving various points and if, unfortunately, one of its conveyors breaks down, unloading of the silo can continue.
  • Evacuation pipes are, of course, equipped with shutter dampers (not shown).
  • Draining without using the scraper arm is done by gravity, by fluidization or other usual means.
  • the asymmetrical position of the vertical axis of the arms relative to the center of the silo makes it possible, with the help of the polar rotation movement, to avoid dropping any vault that can form after emptying without using the scraper arm.

Abstract

The invention concerns a device for extracting a granular, or even powder, material contained in a silo comprising a support (5), an upper frame (6) borne by said support and which, relative thereto, is driven in rotation about a vertical axis and at least one scraper arm (4) borne by the upper frame and inclinable relative to the vertical. Said device is characterised in that: the upper frame (6) has at least two sloping faces (7) on each of which is mounted a scraper arm (4) provided with an inclined base, said sloping faces being deployed at angle so that the scraper arm mass is balanced; and at least two substantially vertical ducts (11) each of which has its inlet located in a zone peripheral to the support and evacuation is carried out through said ducts by gravity.

Description

DISPOSITIF D'EXTRACTION D'UN MATERIAU GRANULEUX VOIRE PULVERULENT CONTENU DANS UN SILODEVICE FOR EXTRACTING A GRANULAR MATERIAL SEEING POWDER CONTAINED IN A SILO
L'invention se rapporte à un dispositif d'extraction d'un matériau granuleux voire pulvérulent contenu dans un silo.The invention relates to a device for extracting a granular or even powdery material contained in a silo.
Par matériaux granuleux, on comprend tant le sucre, le clinker, les cendres volantes que les céréales.Grainy materials include both sugar, clinker, fly ash and grain.
Ces matériaux sont stockés dans des silos ayant une forme généralement soit cylindrique de révolution d'axe vertical, soit hémisphérique.These materials are stored in silos having a shape generally either cylindrical of revolution of vertical axis, or hemispherical.
Ces silos sont généralement vidés par gravité et présentent donc à leur base un orifice d'évacuation.These silos are generally emptied by gravity and therefore have at their base an evacuation orifice.
Lorsque ces silos sont vidés uniquement par gravité, le fond du silo est incliné vers l'orifice d'évacuation et généralement se présente sous la forme d'un entonnoir tronconique.When these silos are emptied only by gravity, the bottom of the silo is inclined towards the evacuation orifice and generally takes the form of a frustoconical funnel.
Au lieu d'un simple orifice d'extraction par gravité, on connaît des silos pourvus d'un dispositif mécanique qui facilite ou régularise l'extraction du matériau et, dans ce cas, le fond du silo n'est plus nécessairement incliné mais peut être horizontal. Ainsi on connaît un dispositif d'extraction (EP-A-471.136) comprenant, dans un silo dont le corps est un dôme hémisphérique :Instead of a simple gravity extraction orifice, silos are known provided with a mechanical device which facilitates or regularizes the extraction of the material and, in this case, the bottom of the silo is no longer necessarily inclined but can be horizontal. Thus an extraction device is known (EP-A-471,136) comprising, in a silo whose body is a hemispherical dome:
- un mât central d'axe vertical, guidé en rotation à chacune de ses deux extrémités,- a central mast with a vertical axis, guided in rotation at each of its two ends,
- à l'extrémité haute de ce mât central, un moyen moteur pour entraîner ledit mât en rotation autour de son axe,- at the upper end of this central mast, a motor means for driving said mast in rotation about its axis,
- solidarisées à la base du mât chacune par une articulation d'axe orthogonal à l'axe du mât, deux vis sans fin qui, du fait de cette articulation, sont inclinables par rapport au mât entre une position proche du mât et une position proche du fond de silo, - des moyens pour commander l'inclinaison de ces vis, lesquels moyens comprennent chacun un câble de longueur variable reliant au moins indirectement l'extrémité libre de chaque vis sans fin à la partie supérieure du mât. 2- secured to the base of the mast each by an articulation with an axis orthogonal to the axis of the mast, two endless screws which, because of this articulation, are tiltable relative to the mast between a position close to the mast and a close position from the bottom of the silo, - means for controlling the inclination of these screws, which means each comprise a cable of variable length connecting at least indirectly the free end of each worm screw to the upper part of the mast. 2
L'inconvénient principal de ce système est que l'ensemble des pièces de l'équipage mobile étant quasiment suspendu au sommet du dôme, les efforts se répercutent sur celui-ci.The main drawback of this system is that all the parts of the mobile assembly being almost suspended from the top of the dome, the forces are reflected on it.
Cela nécessite donc des dômes spécialement conçus pour supporter de tels efforts et qui sont, de ce fait, très coûteux sans toutefois exclure tout risque.This therefore requires domes specially designed to withstand such efforts and which are, therefore, very expensive without however excluding any risk.
Egalement, un tel système ne peut fonctionner dans des silos cylindriques dont la hauteur est largement supérieure au rayon en raison notamment de la présence des moteurs d'entraînement des vis qui, placés à chaque extrémité libre de ladite vis sans fin, seraient alors plongés dans la matière. Pour apporter remède à ce problème de charge au niveau du dôme, on connaît un dispositif d'extraction (FR-A-2.696.431) qui prend appui au sol.Also, such a system cannot operate in cylindrical silos whose height is much greater than the radius, in particular because of the presence of the screw drive motors which, placed at each free end of said worm, would then be immersed in matter. To remedy this load problem at the dome, an extraction device is known (FR-A-2,696,431) which rests on the ground.
Ce dispositif comprend :This device includes:
- dans le fond du silo, une cavité dont le fond présente l'orifice d'évacuation du silo, - au dessus de l'orifice d'évacuation, un support cylindrique creux par lequel transite la matière à évacuer,- in the bottom of the silo, a cavity, the bottom of which has the silo discharge orifice, - above the discharge orifice, a hollow cylindrical support through which the material to be evacuated transits,
- monté en rotation autour d'un axe vertical sur ce support fixe, une tourelle dont la partie supérieure présente une face inclinée d'un angle R par rapport à l'horizontale et - mue en rotation autour d'un axe perpendiculaire à cette face inclinée, une embase porteuse d'un bras racleur incliné d'un angle P par rapport à la perpendiculaire de cette face inclinée.- rotatably mounted around a vertical axis on this fixed support, a turret, the upper part of which has an inclined face at an angle R relative to the horizontal, and - rotated around an axis perpendicular to this face inclined, a base carrying a scraper arm inclined at an angle P relative to the perpendicular of this inclined face.
Du fait de cette inclinaison P par rotation de l'embase, il est possible de régler l'inclinaison du bras racleur par rapport à la verticale. Compte tenu de la cavité centrale qui reste hors de portée du bras, outre ces moyens, pour que toute la matière soit évacuée, l'ensemble doit comprendre des vis sans fin complémentaires disposées radialement par rapport au support fixe pour que le matériau accumulé dans cette cavité soit déplacé vers l'intérieur du support fixe qui présente une sorte d'entonnoir canalisant ledit matériau vers un convoyeur à bande ou autre moyen de transfert placé sous l'entonnoir.Due to this inclination P by rotation of the base, it is possible to adjust the inclination of the scraper arm relative to the vertical. Given the central cavity which remains out of reach of the arm, in addition to these means, so that all the material is evacuated, the assembly must include complementary endless screws arranged radially relative to the fixed support so that the material accumulated in this cavity is moved towards the inside of the fixed support which has a sort of funnel channeling said material towards a belt conveyor or other transfer means placed under the funnel.
Ces vis sans fin radiales complémentaires sont associées au support qui, par sa rotation autour de son axe vertical, peut, avec lui, déplacer lesdites vis.These complementary radial endless screws are associated with the support which, by its rotation about its vertical axis, can, with it, move said screws.
La position verticale du bras racleur aligné sur l'axe de symétrie du silo ne permet pas de contrarier l'effet de voûte. 3The vertical position of the scraper arm aligned with the axis of symmetry of the silo does not allow to counter the arch effect. 3
On ne peut augmenter la longueur du bras sous peine de solliciter l'ancrage du support.The length of the arm cannot be increased, otherwise the anchoring of the support will be requested.
Si ce dispositif de réglage de l'inclinaison de l'axe du bras racleur présente des avantages, la structure telle que décrite présente divers inconvénients tel un débit d'extraction réduit à quelque 100 m3/h, un accès difficile aux moteurs d'entraînement situés tant dans le support que dans la tourelle.If this device for adjusting the inclination of the axis of the scraper arm has advantages, the structure as described has various drawbacks such as an extraction flow rate reduced to around 100 m3 / h, difficult access to the drive motors. located both in the support and in the turret.
L'invention se propose donc de remédier à ces divers inconvénients.The invention therefore proposes to remedy these various drawbacks.
A cet effet, l'invention a pour objet un dispositif d'extraction du type précité comprenant : - un support ancré sur le fond du silo,To this end, the subject of the invention is an extraction device of the aforementioned type comprising: a support anchored on the bottom of the silo,
- une tourelle portée par ce support et qui, par rapport à celle-ci est entraînée en rotation autour d'un axe vertical et- a turret carried by this support and which, relative to the latter is rotated about a vertical axis and
- au moins un bras racleur porté par la tourelle et inclinable par rapport à la verticale, dans lequel dispositif :- at least one scraper arm carried by the turret and tiltable relative to the vertical, in which device:
- la tourelle présente une face supérieure inclinée d'un angle par rapport à l'horizontale,- the turret has an upper face inclined at an angle to the horizontal,
- le bras racleur est associé à cette face supérieure par une embase et par rapport à l'axe perpendiculaire de cette embase, l'axe longitudinal de ce bras est incliné d'un angle P,the scraper arm is associated with this upper face by a base and with respect to the perpendicular axis of this base, the longitudinal axis of this arm is inclined by an angle P,
- l'embase comprend des moyens de guidage et des moyens d'entraînement en rotation autour dudit axe perpendiculaire à la face supérieure pour modifier la position angulaire de l'embase du bras racleur par rapport à la face inclinée de la tourelle et ainsi régler l'inclinaison du bras dans l'espace, ce dispositif étant caractérisé en ce que :- The base includes guide means and drive means in rotation about said axis perpendicular to the upper face to modify the angular position of the base of the scraper arm relative to the inclined face of the turret and thus adjust the tilt of the arm in space, this device being characterized in that:
- d'une part, la tourelle présente au moins deux faces inclinées sur chacune desquelles est monté un bras racleur pourvu de son embase inclinée, lesdites faces inclinées étant angulairement réparties pour que la masse des bras racleurs soit équilibrée et - d'autre part, au moins deux conduites sensiblement verticales dont l'entrée de chacune d'elles se situe dans une zone périphérique au support et par lesquelles conduites l'évacuation se fait par gravité. 4on the one hand, the turret has at least two inclined faces on each of which is mounted a scraper arm provided with its inclined base, said inclined faces being angularly distributed so that the mass of the scraper arms is balanced and - on the other hand, at least two substantially vertical pipes whose input of each of them is located in a surrounding area to the support and through which the discharge pipes is by gravity. 4
L'invention sera bien comprise à l'aide de la description ci-après faite à titre d'exemple non limitatif en regard du dessin ci-annexé qui représente :The invention will be better understood with the aid of the description below given by way of nonlimiting example with regard to the attached drawing which represents:
- figure 1 : coupe verticale d'un silo pourvu de son dispositif d'extraction,- Figure 1: vertical section of a silo provided with its extraction device,
- figure 2 : détail agrandi de la figure 1. En se reportant au dessin, on voit un silo 1 contenant un matériau 2 granuleux voire pulvérulent.- Figure 2: enlarged detail of Figure 1. Referring to the drawing, we see a silo 1 containing a material 2 granular or even powdery.
Ce silo présente au moins un dispositif 3 mécanique d'extraction du matériau.This silo has at least one mechanical device 3 for extracting the material.
Classiquement, ce dispositif d'extraction comprend un bras 4 racleur inclinable par rapport à la verticale de sorte que, progressivement, ce bras racleur s'incline et force le matériau à se diriger vers un orifice d'évacuation.Conventionally, this extraction device comprises a scraper arm 4 that can be tilted relative to the vertical so that, gradually, this scraper arm tilts and forces the material to move towards a discharge orifice.
Classiquement, ce dispositif d'évacuation se présente de la manière suivante :Conventionally, this evacuation device is presented as follows:
- un support 5 ancré sur le fond du silo, - une tourelle 6 portée par ce support et qui, par rapport à celle-ci, est entraînée en rotation autour d'un axe vertical eta support 5 anchored on the bottom of the silo, a turret 6 carried by this support and which, relative to the latter, is rotated about a vertical axis and
- au moins un bras 4 racleur porté par la tourelle et inclinable par rapport à la verticale, dans lequel dispositif : - la tourelle 6 présente une face 7 supérieure inclinée d'un angle R par rapport à l'horizontale,- at least one scraper arm 4 carried by the turret and tiltable relative to the vertical, in which device: - the turret 6 has an upper face 7 inclined at an angle R relative to the horizontal,
- le bras 4 racleur est associé à cette face 7 supérieure par une embase δ et par rapport à l'axe perpendiculaire de cette embase, l'axe longitudinal de ce bras est incliné d'un angle P - l'embase comprend des moyens 9 de guidage et des moyens 10 d'entraînement en rotation autour dudit axe perpendiculaire à la face 7 supérieure pour modifier la position angulaire de l'embase 8 du bras racleur par rapport à la face 7 inclinée de la tourelle et ainsi régler l'inclinaison du bras dans l'espace.- the scraper arm 4 is associated with this upper face 7 by a base δ and with respect to the perpendicular axis of this base, the longitudinal axis of this arm is inclined at an angle P - the base comprises means 9 guide and rotation drive means 10 about said axis perpendicular to the upper face 7 to modify the angular position of the base 8 of the scraper arm relative to the inclined face 7 of the turret and thus adjust the inclination of the arms in space.
Ce bras racleur peut se présenter sous diverses formes qui, dans le cadre de l'invention, ne seront pas détaillées.This scraper arm can be in various forms which, in the context of the invention, will not be detailed.
La tourelle 6 et le bras 4 racleur sont mus par des moyens moteurs logés à l'intérieur de la tourelle ou du support, de manière à être protégés de la poussière. Selon l'invention : 5The turret 6 and the scraper arm 4 are moved by motor means housed inside the turret or the support, so as to be protected from dust. According to the invention: 5
- d'une part, la tourelle 6 présente au moins deux faces 7 inclinées sur chacune desquelles est monté un bras 4 racleur pourvu de son embase inclinée, lesdites faces inclinées étant angulairement réparties pour que la masse des bras racleurs soit équilibrée et - d'autre part, au moins deux conduites 11 sensiblement verticales dont l'entrée de chacune d'elles se situe dans une zone périphérique au support et par lesquelles conduites l'évacuation se fait par gravité.- On the one hand, the turret 6 has at least two inclined faces 7 on each of which is mounted a scraper arm 4 provided with its inclined base, said inclined faces being angularly distributed so that the mass of the scraper arms is balanced and - d ' on the other hand, at least two substantially vertical pipes 11, the entry of each of which is located in a zone peripheral to the support and by which pipes the evacuation is effected by gravity.
Lorsque la tourelle est équipée de deux faces inclinées, les bras racleurs sont montés à l'opposé l'un de l'autre. Lorsqu'il y a trois bras racleurs, ceux-ci sont déphasés de 120 degrés etc.When the turret is equipped with two inclined faces, the scraper arms are mounted opposite each other. When there are three scraper arms, these are 120 degrees out of phase, etc.
Le débit d'extraction peut être ainsi facilement augmenté d'autant plus que la section des conduites d'évacuation ne pose aucun problème technique pour être adaptée au débit maximal souhaité.The extraction flow can thus be easily increased, all the more so as the cross section of the evacuation pipes poses no technical problem in order to be adapted to the maximum flow desired.
En évitant également de faire transiter le matériau entre le fond du silo et l'évacuation par une cavité, puis au travers du support fixe, il n'est plus nécessaire de faire appel à des vis sans fin auxiliaires. Par ailleurs, l'accès aux moyens moteurs logés dans la tourelle s'en trouve grandement facilité.By also avoiding passing the material between the bottom of the silo and the evacuation through a cavity, then through the fixed support, it is no longer necessary to use auxiliary worms. Furthermore, access to the motor means housed in the turret is greatly facilitated.
Un avantage d'un système à conduites d'évacuation multiples (hors le support) est que chaque conduite aboutit à un convoyeur à bande desservant divers points et si, par malheur, l'un de ses convoyeurs vient à tomber en panne, le déchargement du silo peut se poursuivre.An advantage of a system with multiple evacuation pipes (excluding the support) is that each pipe ends in a conveyor belt serving various points and if, unfortunately, one of its conveyors breaks down, unloading of the silo can continue.
Les conduites d'évacuation sont, bien entendu, équipées de registres à trappe de fermeture(non représentés).Evacuation pipes are, of course, equipped with shutter dampers (not shown).
Le débit n'est plus limité à la performance d'un seul bras mais trouve naturellement ses limites individuellement par son volume, son poids et sa portée. Le moment résultant sur les fondations, dans le cas d'une assymétrie, n'existe plus en présence de bras répartis régulièrement sur la tourelle.The flow is no longer limited to the performance of a single arm but naturally finds its limits individually by its volume, its weight and its range. The moment resulting on the foundations, in the case of an asymmetry, no longer exists in the presence of arms distributed regularly over the turret.
Les vidanges hors utilisation du bras racleur se font par gravité, par fluidisation ou autres moyens habituels. La position assymétrique de l'axe vertical des bras par rapport au centre du silo permet avec l'aide du mouvement de rotation polaire d'éviter de faire tomber toute voûte pouvant se former après vidange hors utilisation du bras racleur. Draining without using the scraper arm is done by gravity, by fluidization or other usual means. The asymmetrical position of the vertical axis of the arms relative to the center of the silo makes it possible, with the help of the polar rotation movement, to avoid dropping any vault that can form after emptying without using the scraper arm.

Claims

6REVENDICATIONS 6 CLAIMS
1. Dispositif d'extraction d'un matériau granuleux voire pulvérulent contenu dans un silo comprenant : - un support (5) ancré sur le fond du silo,1. Device for extracting a granular or even powdery material contained in a silo comprising: - a support (5) anchored on the bottom of the silo,
- une tourelle (6) portée par ce support et qui, par rapport à celle-ci, est entraînée en rotation autour d'un axe vertical et- a turret (6) carried by this support and which, relative to the latter, is rotated about a vertical axis and
- au moins un bras (4) racleur porté par la tourelle et inclinable par rapport à la verticale, dans lequel dispositif :- at least one scraper arm (4) carried by the turret and tiltable relative to the vertical, in which device:
- la tourelle (6) présente une face (7) supérieure inclinée d'un angle (R) par rapport à l'horizontale,the turret (6) has an upper face (7) inclined at an angle (R) relative to the horizontal,
- le bras (4) racleur est associé à cette face (7) supérieure par une embase (8) et par rapport à l'axe perpendiculaire de cette embase, l'axe longitudinal de ce bras est incliné d'un angle (P),- the scraper arm (4) is associated with this upper face (7) by a base (8) and relative to the perpendicular axis of this base, the longitudinal axis of this arm is inclined at an angle (P) ,
- l'embase comprend des moyens (9) de guidage et des moyens (10) d'entraînement en rotation autour dudit axe peφendiculaire à la face (7) supérieure pour modifier la position angulaire de l'embase du bras racleur par rapport à la face (7) inclinée de la tourelle et ainsi régler l'inclinaison du bras dans l'espace, ce dispositif est caractérisé en ce que :- The base comprises means (9) for guiding and means (10) for driving in rotation about said axis peφendicular to the face (7) upper to modify the angular position of the base of the scraper arm relative to the inclined face (7) of the turret and thus adjust the inclination of the arm in space, this device is characterized in that:
- d'une part, la tourelle (6) présente au moins deux faces (7) inclinées sur chacune desquelles est monté un bras (4) racleur pourvu de son embase inclinée, lesdites faces inclinées étant angulairement réparties pour que la masse des bras racleurs soit équilibrée et- On the one hand, the turret (6) has at least two inclined faces (7) on each of which is mounted a scraper arm (4) provided with its inclined base, said inclined faces being angularly distributed so that the mass of the scraper arms be balanced and
- d'autre part, au moins deux conduites (11) sensiblement verticales dont l'entrée de chacune d'elles se situe dans une zone périphérique au support et par lesquelles conduites l'évacuation se fait par gravité.- on the other hand, at least two substantially vertical pipes (11), the inlet of each of which is located in a zone peripheral to the support and by which pipes the evacuation is by gravity.
2. Dispositif selon la revendication 1 caractérisé en ce que lorsque la tourelle est équipée de deux faces inclinées, les bras racleurs sont montés à l'opposé l'un de l'autre.2. Device according to claim 1 characterized in that when the turret is equipped with two inclined faces, the scraper arms are mounted opposite one another.
3. Dispositif selon la revendication 1 caractérisé en ce que lorsqu'il y a trois bras racleurs, ceux-ci sont déphasés de 120 degrés. 3. Device according to claim 1 characterized in that when there are three scraper arms, these are phase shifted by 120 degrees.
PCT/FR1999/000620 1998-03-18 1999-03-18 Device for extracting a granular, or even powder, material contained in a silo WO1999047440A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99909033A EP0984892A1 (en) 1998-03-18 1999-03-18 Device for extracting a granular, or even powder, material contained in a silo
AU28425/99A AU2842599A (en) 1998-03-18 1999-03-19 Device for extracting a granular, or even powder, material contained in a silo

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9803624A FR2776271B1 (en) 1998-03-18 1998-03-18 DEVICE FOR EXTRACTING A GRANULAR MATERIAL SEEING POWDER CONTAINED IN A SILO
FR98/03624 1998-03-18

Publications (1)

Publication Number Publication Date
WO1999047440A1 true WO1999047440A1 (en) 1999-09-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1999/000620 WO1999047440A1 (en) 1998-03-18 1999-03-18 Device for extracting a granular, or even powder, material contained in a silo

Country Status (4)

Country Link
EP (1) EP0984892A1 (en)
AU (1) AU2842599A (en)
FR (1) FR2776271B1 (en)
WO (1) WO1999047440A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3487961A (en) * 1968-07-26 1970-01-06 Charles D Neuenschwander Grain handling apparatus
DE8405602U1 (en) * 1984-02-24 1986-03-13 Ruberg-Mischtechnik KG, 4790 Paderborn Bunker with discharge device
EP0471136A1 (en) 1990-08-15 1992-02-19 Cambelt International Corporation Device and method for outloading bulk materials
FR2696431A1 (en) 1992-10-05 1994-04-08 Jmc Extraction device and storage area equipped with such a device.
DE19600858A1 (en) * 1996-01-12 1997-07-17 Foerdertechnik Freital Gmbh Dispenser for bulk products with poor flow properties

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3487961A (en) * 1968-07-26 1970-01-06 Charles D Neuenschwander Grain handling apparatus
DE8405602U1 (en) * 1984-02-24 1986-03-13 Ruberg-Mischtechnik KG, 4790 Paderborn Bunker with discharge device
EP0471136A1 (en) 1990-08-15 1992-02-19 Cambelt International Corporation Device and method for outloading bulk materials
FR2696431A1 (en) 1992-10-05 1994-04-08 Jmc Extraction device and storage area equipped with such a device.
EP0592276A1 (en) * 1992-10-05 1994-04-13 Jmc (S.A.) Discharging device and storage area provided with such a device
DE19600858A1 (en) * 1996-01-12 1997-07-17 Foerdertechnik Freital Gmbh Dispenser for bulk products with poor flow properties

Also Published As

Publication number Publication date
FR2776271A1 (en) 1999-09-24
FR2776271B1 (en) 2000-06-16
AU2842599A (en) 1999-10-11
EP0984892A1 (en) 2000-03-15

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