EP1396290A1 - Verfahren und Anordnung für die automatische morphologische Sortierung von in wesentlichen kugelförmigen Artikeln - Google Patents

Verfahren und Anordnung für die automatische morphologische Sortierung von in wesentlichen kugelförmigen Artikeln Download PDF

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Publication number
EP1396290A1
EP1396290A1 EP03291974A EP03291974A EP1396290A1 EP 1396290 A1 EP1396290 A1 EP 1396290A1 EP 03291974 A EP03291974 A EP 03291974A EP 03291974 A EP03291974 A EP 03291974A EP 1396290 A1 EP1396290 A1 EP 1396290A1
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EP
European Patent Office
Prior art keywords
objects
chute
rollers
hopper
width
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03291974A
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English (en)
French (fr)
Inventor
Yves Pierre Francois Leclerc
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.)
Delarue Sas
Original Assignee
Delarue Sas
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Filing date
Publication date
Application filed by Delarue Sas filed Critical Delarue Sas
Publication of EP1396290A1 publication Critical patent/EP1396290A1/de
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/003—Separation of articles by differences in their geometrical form or by difference in their physical properties, e.g. elasticity, compressibility, hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/14—Details or accessories
    • B07B13/16—Feed or discharge arrangements

Definitions

  • Sorting objects according to their morphology is a often difficult and laborious operation.
  • rollers intended for the operation of these shredders must be regular, round or oval in shape. They must also submit a regular surface, that is to say without significant cavity or shine, and without inclusion metal oxides such as iron oxide which could give a color undesirable to the ground material. They therefore necessarily come from a sort a large quantity of stony material, known as "all-purpose"
  • a facility for manual sorting is generally composed a device for storing all-purpose rollers called a "hopper” supplying by a chute a conveyor belt which feeds a screen itself allowing to separate the rollers according to their size to obtain several particle sizes of pebbles, such as for example pebbles between 20 and 70 millimeters in size (so-called “20/70” pebbles), and rollers of caliber between 70 and 200 mm (rollers called “70/200").
  • Each type of rollers is then conveyed by any known means to the sorting location where find sorting tables: smooth belt conveyor, belt elevator rough, that is to say having reliefs to prevent the rollers from fall down when the rollers have to be moved to a position high.
  • This process is characterized by the fact that the objects stored in bulk are removed by isolating them from each other so that they arrive on the inclined plane and all remain there until their evacuation while being independent from each other, based individually on said plane.
  • This solution illustrated by FIG. 2 of patent FR 2 606 302, provides a chute of which the end towards the hopper is wider than the end above of the inclined plane, so that this chute acts as a funnel and that the objects are deposited individually on the plan.
  • the present invention remedies the drawbacks of the solutions known and proposes a new solution according to which the objects are not distributed one by one but in relatively large quantities, a solution which also improves the quality of sorting and increases production.
  • FIG. 1 is a schematic representation of a chute currently used for automatic sorting of rollers and characterizing the state of the art.
  • Figure 2 is a schematic perspective representation of an installation implementing the method according to the invention.
  • Figure 3 is a schematic perspective representation a device to facilitate the flow of objects in the chute.
  • FIG. 4 is a schematic perspective representation of the installation of FIG. 2, the chute and the extractor of which are provided with a deflector.
  • Figure 5 is a schematic perspective representation an installation implementing the method according to the invention, and equipped with a device for watering objects and a second inclined plane.
  • Figure 6 is a schematic sectional representation made along line VI - VI of Figure 5.
  • Figure 7 is a schematic sectional representation of a installation according to the invention making it possible to increase the sorting rate of objects.
  • FIG. 1 illustrates this provision. You can see the bottom of a T hopper fitted with a vertical parallelepipedal end sleeve 1 in which a opening 2 on one of its vertical faces.
  • the sleeve 1 is located above a chute 3 of the type known and of width l slightly greater than the external width of the sleeve 1, that is to say slightly greater than about thirty centimeters.
  • the chute 3 consists of two vertical faces 3a spaced apart by the width l and connected to a very narrow flat bottom 3b by two faces obliques 3c.
  • the chute is slightly inclined relative to the horizontal Ho at an angle ⁇ allowing a regular flow of the objects to be sorted which are here, pebbles G called "all coming" because they are very heterogeneous as to their size, shape, appearance, regularity of surface, etc.
  • rollers G are stored in the hopper T and flow in the chute 3 through the opening 2 of the sleeve 1. Due to the inclination of the chute 3, the rollers flow inside towards the downstream end of the chute 3 (the lowest end) and fall on a horizontal conveyor 5 of the type known, whose band has a closed course and is animated by a movement in the direction of arrow F1. Therefore, the rollers G are driven away from the chute 3 to the rest of the automatic sorting installation (not shown). In the rest of this description, this conveyor 5 is named “extractor”.
  • the shape of the chute 3 and in particular the presence of the faces obliques 3c causes the rollers G to regroup towards the center of the chute 3.
  • This concentration of the rollers G in the chute G is relatively well preserved on extractor 5 where the rollers are distributed in a continuous bead made up of several thicknesses of rollers G in the middle and a few rollers in width.
  • This concentration of pebbles G on the extractor 5 induces poor sorting by the rest of the installation.
  • FIG. 2 An installation in accordance with the invention, much more efficient as for the sorting of objects, is represented in figure 2.
  • the hopper T of this installation is different from that of figure 1.
  • the opening at the base of the hopper T is wide and receives a specially designed sleeve 7 due to the unusual width of this opening. It has an opening not on one of its vertical faces, but on its lower planar face, the latter being absent to form the opening.
  • the sleeve 7 makes it possible to channel the objects coming from the hopper T but it is not essential for the operation of the installation according to the invention.
  • the T hopper / sleeve assembly 7 is generally designated by “the T hopper”.
  • a chute 9 is held by tensioners 11 and 12 under the opening of the sleeve 7.
  • the opening of the hopper T has a width slightly less than the width of the chute 9.
  • the chute 9 is therefore mounted movable between two positions extremes in one of which it is sufficiently far from the orifice lower of the hopper T to let the rollers G pass, and in the other which it is close enough to said orifice to oppose the passage of rollers G.
  • tensioners 11 and 12 can be replaced by any known means such as jacks or any other automatic means or no in order to allow and facilitate the positioning of the chute 9 in depending on the type of objects to be sorted, their size, etc.
  • the chute 9 consists of a flat bottom 13 having an edge free transverse outlet and two longitudinal sides with flanges 14 separated from each other by a distance L much greater than their height Hb (figure 3), so that the objects located on the plane background coming from the hopper are spread in large numbers over the entire width of the chute, from one ledge to the other, the passage section of these objects considered at the free end of the chute thus being much wider than it is high.
  • the chute When the tensioners 11 and 12 are fully tightened, the chute is brought up. The bottom plane 13 of the chute 9 is then against, or even only close to, the vertical walls of the hopper T and stops the flow of the rollers G.
  • Control of the speed of flow of the rollers G in the chute is important for obtaining a pebble curtain G monolayer on the extractor and that sorting is efficient.
  • a possible solution ( Figure 3) is to slightly tilt the chute 9 so that the rollers are in equilibrium unstable but immobile, and to add to the chute 9 a vibrator motor 15. This shakes the chute by giving it small jerks which are transmitted to the rollers G. These are then unbalanced and flow slowly into the chute 9 and then onto the extractor 16.
  • the vibrations cause the rollers G to progress in mass distributed indifferently in one or more layers in the chute 9 from the hopper T (the mass of rollers G then has a height H, visible on the FIG. 6) towards the extractor 16 (the mass of rollers G then has a height h, visible in Figure 6, lower than the previous H), while distributing them transversely to the direction of progression.
  • the chute 9 has no means of concentrating the objects in a particular direction such as a constriction or faces obliques. Consequently, the objects are distributed regularly over the entire width L of the chute 9 and fall on the strip 17 of the extractor 16.
  • the extractor 16 comprises on at least its entire length two banks 18, only one being shown for one better understanding of the drawing.
  • the speed of rotation of the strip 17 according to arrow F2 determines, in combination with the width of the chute, the distribution of rollers G on the belt 17. If the speed of the belt is lower than the flow speed of the rollers G in the trough 9, these accumulate on the extractor 16, and this despite the presence of a chute 9 of width L.
  • the speed of rotation of the strip 17 of the extractor 16 must be greater than that of the flow of the rollers G in the trough 9 for that these are driven longitudinally faster than they fall. This allows a longitudinal spreading of the rollers G so that the arrangement of the rollers G on the extractor 16 is that of a curtain substantially monolayer.
  • the speed of the strip 17 can vary from five to fifty centimeters per second depending on the grain size of the objects and the speed of the flow of objects in the chute 9.
  • the rollers fall on a belt conveyor 19 inclined at an angle y with respect to the horizontal Ho.
  • the angle y must be large enough for the round rollers Gr roll, and low enough that the irregular rollers Gi do not roll.
  • the strip whose direction of movement is indicated by the arrow F3 brings up the objects placed on the strip and which do not roll.
  • the rollers are subjected to a displacement force equal to the result of the force of gravity and the drive force of the tape. However, there is very little friction between the round rollers Gr and the conveyor belt 19.
  • Gr round rollers the displacement force is almost equal in value to the force of gravity since the force of tape drive is almost zero.
  • Gr round rollers roll down then the slope of the conveyor 19 despite the reverse direction of rotation of the bandaged.
  • the transporter to strip 19 has at least its entire length two edges 20, only one being represented for a better understanding of the drawing.
  • pebbles Gi not being able to roll due to their irregular shape prevent them by blocking round Gr rollers located above, to roll.
  • a conveyor 21 - 23 for conveying the rollers respectively spherical Gr and irregular Gi towards storage or processing places different: screen, table for manual sorting, etc.
  • the installation shown in Figure 4 and conforms to the invention has means for improving the monolayer arrangement of rollers G on the extractor and to reduce the trapping phenomenon on the carrier 19.
  • This installation identical to the installation in Figure 2 previously described, further comprises a doctor blade 24 and a deflector 27 located respectively at the end of the chute 9 and at the end of extractor 16.
  • rollers G fall on the extractor 9 before the doctor blade 24.
  • the distribution and the flow of the rollers G at the end of the chute 9 are not homogeneous. he can indeed happen that a large quantity of rollers G flows very quickly, for example during the replenishment of the T hopper which receives a mass important of rollers G which will perform on the rollers G located towards the bottom of the hopper T a strong thrust that is difficult to control.
  • the doctor blade 24 allows on the one hand to limit the speed of the rollers G on the chute 9, and on the other hand, to clip the curtain of rollers G and to spread them in order to obtain on the extractor 16 a substantially monolayer curtain of rollers G. It can be seen that the abnormally large width of the chute 9 allows the use of a doctor blade 24 just as wide allowing the establishment of a substantially single-layer curtain (thanks to the unusual shape of the chute 9) of rollers G over an exceptional width.
  • the role of the doctor blade 24 is played by the bottom edge of the hopper T.
  • An oblique face 25 is fixed on the bottom edge of the hopper and determines a cross-section of the objects limited substantially to a single layer.
  • the face 25 makes it possible to flatten the mass of the rollers G as soon as they arrive on the chute 9.
  • doctor blade 24 can also be played by a gantry on which is fixed the tensioner 12. This gantry is then much lower than the portal frame 26 shown and determines a limited section for the passage of objects substantially in a single layer in order to clip the mass of the rollers G during their passage through the chute 9, spread them over the bottom 13 of the chute 9.
  • doctor blade it is also possible to provide a height-adjustable doctor blade for that the passage section determined between the bottom 13 of the hopper and the bottom of the doctor blade is adaptable to the size of the objects treated.
  • the doctor blade can example be mounted on a jack to facilitate its installation.
  • the deflector 27 at the end of the extractor 16 has a face lower (27a) and an upper face (27b), the latter facing upstream an inclined belt conveyor (19).
  • the deflector 27 is constituted a rigid axis fixed to the edges 18 of the extractor and associated with a blade 31 in one elastic material such as an elastomer.
  • the deflector 27 can also, well understood, consist of a simple rigid blade.
  • rollers G When the rollers G arrive at the end of the extractor 16, they fall on the blade 31 which deflects them from their initial trajectory and projects them towards the lower end of the conveyor 19.
  • the deflector 27 makes it possible to give the rollers G a downward impulse of the conveyor 19. This at different consequences depending on whether the rollers G are round or not.
  • the pebbles round Gr bounce on the blade 31 and acquire a maximum speed towards the bottom of the slope, while the irregular pebbles Gi do not rebound and arrive on the conveyor with a speed lower than that of the round rollers Gr.
  • the round rollers Gr arrive on the conveyor 19 plus lower than the other Gi rollers, which avoids the phenomenon of trapping.
  • a round roller Gr arrives on the conveyor 19 higher than a irregular pebble Gi, the speed it has acquired may allow it to move the pebble apart immobilized Gi on transporter 19 and continue to descend the slope towards the carrier 21.
  • FIG. 4 The installation of FIG. 4 comprises above the chute 9 a sprinkler device 33 for the rollers G.
  • Watering the rollers is a step necessary in the whole treatment of the rollers but is not part of the invention. However, this step is improved thanks to the width exceptional of chute 9. In effect, this allows the rollers to spread G which are all easily watered, while in a chute 3 of known type, the rollers located below are much less well watered than those on top, unless you thoughtlessly increase the amount of water spilled.
  • FIG. 5 also includes a second inclined belt conveyor 35 located under the inclined conveyor 19, the end downstream (highest) thereof being offset from the downstream end of the conveyor 35 towards the middle of the latter.
  • the conveyor 19 is provided with a deflector 27 of the same type than the one located at the end of extractor 16.
  • this deflector may be of a different nature or even not be present, but sorting efficiency can be improved thanks to it. It plays the same role as the deflector 27 located at the end of the extractor 16. This configuration allows to double the processing of the rollers G and to refine the sorting. Indeed, it is useful to take all possible measures to achieve the elimination of the phenomenon trapping, which is very difficult.
  • rollers G which arrive at the downstream end of the conveyor 19 are mostly irregular, but some are trapped by the irregular pebbles Gi, are round or oval. Instead of being directly disposed of as waste by the conveyor 23 as in the configuration of FIG. 4, all of these rollers G fall on the deflector 27 and are sorted again morphological on the transporter 35. This second transporter 35 allows to refine the sorting and to recover round pebbles Gr which have been trained by irregular pebbles Gi towards the conveyor 23 and would have represented a relatively large shortfall.
  • FIG. 6 makes it possible to visualize the phenomenon of trapping of round rollers Gr by irregular rollers Gi above the deflector 27 of extractor 16. We can also see how the second inclined conveyor 35 improves sorting by separating round rollers Gr from rollers irregular Gi.
  • FIG. 7 shows two installations identical to FIG. 6, opposite side by side. This arrangement doubles the amount of rollers G sorted while retaining the quality of sorting due to the chute 9.
  • the current width of known type trunking is approximately three hundred millimeters. Apart from an increase in the quantity of objects sorted out, the Tradesman is not stimulated to widen the chute because the machines are always associated with low belt conveyors width, generally standard.
  • This large width can be, for example, one thousand six hundred millimeters because it has proven to be well suited to the efficient sorting of sea.

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  • Combined Means For Separation Of Solids (AREA)
EP03291974A 2002-09-06 2003-08-07 Verfahren und Anordnung für die automatische morphologische Sortierung von in wesentlichen kugelförmigen Artikeln Withdrawn EP1396290A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0211079A FR2844212B1 (fr) 2002-09-06 2002-09-06 Procede et installation pour le tri morphologique automatique d'objets substantiellement spheriques.
FR0211079 2002-09-06

Publications (1)

Publication Number Publication Date
EP1396290A1 true EP1396290A1 (de) 2004-03-10

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EP03291974A Withdrawn EP1396290A1 (de) 2002-09-06 2003-08-07 Verfahren und Anordnung für die automatische morphologische Sortierung von in wesentlichen kugelförmigen Artikeln

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EP (1) EP1396290A1 (de)
FR (1) FR2844212B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA022235B1 (ru) * 2011-09-06 2015-11-30 Александр Алексеевич КОНЦЕВОЙ Способ выноса угля для отгрузки на угольных разрезах и конвейер для его осуществления
CN111906030A (zh) * 2019-05-09 2020-11-10 国际烟草机械波兰有限责任公司 用于分选球形物体的装置和方法
CN112572890A (zh) * 2020-12-02 2021-03-30 塔里木大学 一种新型香梨的套袋包装机
CN113000385A (zh) * 2021-04-07 2021-06-22 湖州欣畅源环保科技有限公司 一种建筑垃圾发泡砖与轻物质分选设备
CN116273895A (zh) * 2023-05-11 2023-06-23 中储粮成都储藏研究院有限公司 大豆振动分离机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2318976A (en) * 1941-02-25 1943-05-11 California Walnut Growers Ass Nut separating machine
US4099622A (en) * 1976-12-10 1978-07-11 Atlantic Richfield Company Inclined conveyor belt solids separation system
GB2067099A (en) * 1980-01-14 1981-07-22 Sphere Invest Vibratory screening feeder
US4365717A (en) * 1978-04-24 1982-12-28 Sphere Investments Limited Feed apparatus and method
FR2606302A1 (fr) * 1986-11-07 1988-05-13 Sanson Guillaume Procede et installation pour trier des objets substantiellement spheriques

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2318976A (en) * 1941-02-25 1943-05-11 California Walnut Growers Ass Nut separating machine
US4099622A (en) * 1976-12-10 1978-07-11 Atlantic Richfield Company Inclined conveyor belt solids separation system
US4365717A (en) * 1978-04-24 1982-12-28 Sphere Investments Limited Feed apparatus and method
GB2067099A (en) * 1980-01-14 1981-07-22 Sphere Invest Vibratory screening feeder
FR2606302A1 (fr) * 1986-11-07 1988-05-13 Sanson Guillaume Procede et installation pour trier des objets substantiellement spheriques

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA022235B1 (ru) * 2011-09-06 2015-11-30 Александр Алексеевич КОНЦЕВОЙ Способ выноса угля для отгрузки на угольных разрезах и конвейер для его осуществления
CN111906030A (zh) * 2019-05-09 2020-11-10 国际烟草机械波兰有限责任公司 用于分选球形物体的装置和方法
CN112572890A (zh) * 2020-12-02 2021-03-30 塔里木大学 一种新型香梨的套袋包装机
CN112572890B (zh) * 2020-12-02 2022-05-03 塔里木大学 一种新型香梨的套袋包装机
CN113000385A (zh) * 2021-04-07 2021-06-22 湖州欣畅源环保科技有限公司 一种建筑垃圾发泡砖与轻物质分选设备
CN116273895A (zh) * 2023-05-11 2023-06-23 中储粮成都储藏研究院有限公司 大豆振动分离机
CN116273895B (zh) * 2023-05-11 2023-07-25 中储粮成都储藏研究院有限公司 大豆振动分离机

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Publication number Publication date
FR2844212B1 (fr) 2006-05-05
FR2844212A1 (fr) 2004-03-12

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