EP3528969B1 - Table de tri à crible ajustable - Google Patents

Table de tri à crible ajustable Download PDF

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Publication number
EP3528969B1
EP3528969B1 EP17784366.1A EP17784366A EP3528969B1 EP 3528969 B1 EP3528969 B1 EP 3528969B1 EP 17784366 A EP17784366 A EP 17784366A EP 3528969 B1 EP3528969 B1 EP 3528969B1
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EP
European Patent Office
Prior art keywords
sorter
sorting
sections
conveyor
diameter
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EP17784366.1A
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German (de)
English (en)
French (fr)
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EP3528969A1 (fr
Inventor
Jean-Marc Gialis
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Pellenc SAS
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Pellenc SAS
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Publication of EP3528969A1 publication Critical patent/EP3528969A1/fr
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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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4636—Regulation of screen apertures
    • 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B07B1/15—Roller screens using corrugated, grooved or ribbed rollers

Definitions

  • the present invention relates to an adjustable screen sorting table.
  • a sorting table that can be used for the elimination of foreign bodies remaining mixed with a harvest of small fruits or with a grape harvest.
  • Such a sorting table makes it possible, in particular in the case of a harvest, to separate on the one hand grape berries or other objects of size and shape similar to grape berries, and on the other hand undesirable objects larger than grape berries and elongated or flattened shapes such as leaves, stalks or petioles for example. This is particularly the case when the harvest has previously undergone a destemming operation.
  • the invention can be implemented for the elimination in a fruit harvest of any type of debris of a size distinct from the fruits, and in particular for a harvest of small fruits such as currants, blackcurrants, blackberries, raspberries, olives, cranberries, cranberries or other berries or drupes.
  • the invention can also be put to good use for the grading of fruits, by simply separating larger fruits from smaller fruits.
  • the invention also finds applications in the manufacture of stand-alone sorting tables, or sorting tables integrated into a harvesting or grape-picking machine.
  • Known sorting tables for example that of the document FR 2 920 278 , comprise a plurality of parallel conveyor-sorter rollers, arranged according to a sorting plan. They are generally arranged along a horizontal plane or close to the horizontal. They can take a more pronounced inclination when they are embarked on a harvester vehicle, for example, brought to follow the irregularities of the ground. This latter mode of operation is not, however, an inclination adjustment parameter.
  • the conveyor-sorting rollers are regularly spaced between them and form a screen.
  • a crop or grapes dumped at an inlet of the sorting table is conveyed in the direction of an outlet end of the sorting table by rotating the conveyor-sorter rollers in the same direction of rotation.
  • the fruits or berries can pass through spaces provided between the conveyor-sorter rollers to be collected under the sorting table.
  • debris larger than the fruits or berries in particular petioles, leaves, stalks or small branches found in the harvest or the grapes, continue their conveyance to the exit end of the table. sorting, the table being shaped to prevent their passage through the spaces between the rollers.
  • the main parameters for adjusting a sorting table are the rate of discharge of the crop or grapes onto the table, the conveying speed, determined by the speed of rotation of the conveyor-sorting rollers, the spacing between the rollers conveyor-sorters, and possibly an inclination of the sorting table relative to a horizontal plane. Too little spacing between the rollers, too much rotational speed or too high a discharge rate cause fruit to reach the exit end of the table and be discarded with the debris, conversely, too much spacing between the rollers or a rotation speed that is too low promote unwanted passage of debris through the sorting table, along with the fruit.
  • the speed of rotation of the conveyor-sorter rollers can be easily adjusted by controlling the drive means for rotating the conveyor-sorter rollers.
  • the opening of the screen, formed by the spaces between the conveyor-sorter rollers, can be modified by adjusting a spacing of the axes of the conveyor-sorter rollers.
  • the document EP 2 457 671 proposes mounting the ends of the conveyor-sorting rollers on slides perpendicular to their axis.
  • the document GB 1295781 offers the possibility of mounting sorting rollers of different sizes on sorting rollers.
  • the document EP2223587 shows a sorting roller provided with a sleeve.
  • the object of the invention is to propose a different adjustment means for a sorting table, and in particular a rapid adjustment means, making it possible to modify the sieve of the sorting table in real time during a sorting operation.
  • Another object of the invention is to propose a means for adjusting a sorting table acting simultaneously on the opening of the screen formed by the table and on the speed of conveying the harvest or the harvest along the table.
  • the invention proposes a sorting table with an adjustable screen for fruit, comprising a succession of conveyor-sorter rollers arranged according to a sorting plane and parallel to each other, the conveyor-sorter rollers each having at least one sorter section , a spacing being provided respectively between sorting sections facing successive conveyor-sorting rollers for a selective passage of fruit through the table, by said spacing.
  • the sorting table comprises conveyor-sorter rollers provided with sorting sections with adjustable diameter and a device for controlling the diameter of the sorting sections with adjustable diameter.
  • the adjustable nature of the diameter of the sorter sections does not necessarily imply that this diameter is constant on the sorter section along the axis of the conveyor-sorter roller.
  • the diameter of the sorting sections can indeed be modified in a non-uniform way, for example, with a modification more important on a central part of the sorter section and a smaller modification on the edges, always with respect to the axis of the corresponding conveyor-sorter roller.
  • the adjustable character of the diameter of the sorting sections can thus be understood as also applying to their average diameter. This resulted, between two facing sorting sections, in a spacing with a larger opening when the average diameter is reduced and a spacing with a smaller opening when the average diameter is increased.
  • the sorting table is considered to be a "for fruit” sorting table when it is configured for sorting a harvest of fleshy stone fruits, berries, drupes, and more particularly a harvest of grapes.
  • a for fruit sorting table when it is configured for sorting a harvest of fleshy stone fruits, berries, drupes, and more particularly a harvest of grapes.
  • the conveyor-sorting rollers can comprise one or more sorting sections which form the screen.
  • each roller comprises a plurality of sorting sections.
  • the rest of the description essentially refers to conveyor-sorter rollers provided with a plurality of sorting sections, without prejudging the number of sorting sections of each roller.
  • the conveyor-sorting rollers, as well as the sorting sections having a symmetry of revolution.
  • the sorting sections have an adjustable diameter when their diameter, and thus their perimeter, can be modified and adjusted. It should be specified that the adjustment of the diameter of the sorting sections is independent of the passage of fruit between the sorting sections. In particular, the simple deformation of a sorter section under the effect of the passage of a fruit is not considered as an adjustment of its diameter.
  • the sorting section diameter control device may be an operator-controlled control device, or preferably an automatic servo-controlled device, so as to be able to adjust the size of the sorting sections, and therefore the screen of the table. in real time during a sorting operation, without interrupting this operation.
  • the device for controlling the diameter of the sorting sections can have various embodiments depending on its mode of action on the sorting sections with adjustable diameter. In particular, it may be a device with mechanical or pneumatic action, as emerges from the remainder of the description.
  • the control of the diameter of the sorting sections can be slaved, for example, to the detection of a quantity of fruit arriving at the end of the sorting table without having crossed the sorting table, or in relation to the detection of a amount of debris remaining in the sorted fruit.
  • a device for measuring a quantity of fruit arriving at the end of the table or a quantity of debris remaining in the sorted fruit can be provided for the servo-control of the control device. It may be an optical member, for example an optical barrier, a load cell, or more sophisticatedly a camera associated with an image analysis system.
  • Programming or direct control of the device for controlling the diameter of the sorting sections can also be carried out by an operator, visually evaluating the operation of the sorting table.
  • the sorting sections of the rollers have two distinct functions.
  • a first function is to constitute a sieve due to the spaces provided between the facing sorting sections. These spacings in fact allow the fruit to pass through the sorting table and thus be separated from the debris which continues to be conveyed to an outlet of the sorting table.
  • a second function of the sorting sections, and more generally of the conveyor-sorting rollers, is a conveying function. Indeed, the conveying of the crop dumped on the sorting table in the direction of an exit from the sorting table is caused by the rotation of the conveyor-sorter rollers, these rollers preferably all being driven at the same speed of rotation. in the same direction of rotation.
  • a first effect is to modify the spacing between the sorting sections and therefore the opening of the screen of the sorting table. In fact, when the diameter of the facing sorting sections is increased, the spacing between these sections is reduced. Conversely, when the diameter of the sorting sections is reduced, the spacing, and therefore the opening of the screen, become larger.
  • a regular arrangement of the sorting rollers makes it possible in particular to provide a uniform opening of the screen. This is however not a characteristic necessary. It is possible to envisage adjusting the sorting table with an increasing or decreasing opening of the screen along an axis parallel to the conveying direction, for example.
  • a second effect of modifying the diameter of the sorting sections is a change in the conveying speed of the harvest on the sorting table.
  • the conveying can also be ensured, on part of the sorting table by simple conveyor rollers which have no fruit sorting function, but simply a conveying function and possibly a distribution function fruit and debris at the entrance to the screen, or even a sorting function for liquids or small debris smaller than the fruit, such as seeds and grape juice in the case of a harvest, for example.
  • These rollers are preferably provided when the screed is retracted into a zone for dumping and distributing the harvest or grapes. They have no passages allowing the fruit to pass through the sorting table, but may include narrower passages allowing the flow of juice or the passage of debris smaller in size than the fruit, such as pips or pits.
  • all the sections of all the conveyor-sorter rollers are not necessarily of adjustable diameter.
  • the adjustable-diameter sorting sections preferably comprise a deformable outer wall.
  • This wall can be formed by a sheath, a sleeve or a membrane in a natural elastic material or an elastomer. thermoplastic, for example, rubber or polyurethane.
  • the deformable nature of the floor makes it possible to adapt to the diameter of the sorter section while constituting a sealed envelope for the juices of the fruit conveyed. The seal promotes cleaning of the sorting table and protects the internal parts of the conveyor-sorter rollers.
  • the sorting table and in particular the device for controlling the diameter of the sorting sections with adjustable diameter, may comprise a source of fluid at controlled pressure respectively connected to an internal chamber of the conveyor rollers - sorters fitted with sorting sections with adjustable diameter.
  • the internal chamber is in fluid communication with the deformable floor.
  • the device for controlling the diameter of the sorting sections can act by modifying the pressure of the fluid in the internal chamber of the sorting conveyor rollers. The modification of the pressure of the fluid makes it possible to deform the deformable floor and thus to adjust the diameter of the sorting sections.
  • the deformation may be similar to swelling or deflation of the deformable wall of a sorter section.
  • the pressure-controlled fluid source can be, for example, a source under pressure or under vacuum relative to atmospheric pressure. This may preferably be a pressurized air source.
  • the fluid can also be a liquid, such as water or oil, for example.
  • the deformable outer floor of the sorting sections can also constitute a floor of the internal chamber mentioned above.
  • the internal chamber may have a rigid wall, the deformable external wall forming a sheath around the rigid wall.
  • the sheath can take the form of a sleeve or a membrane, described below.
  • these may comprise a plurality of sorting sections arranged along a roller axis.
  • the sorting sections are respectively separated by annular collars projecting from the sorting sections.
  • Las annular collars promote the selective passage of fruit through the sorting table, that is to say in the spaces between the sorting rollers. They also allow the conveyance of bulky debris.
  • the annular flanges which may preferably have a diameter greater than the maximum diameter of the sorting rollers, also participate in the conveying of the harvest on the sorting table.
  • annular flanges of adjacent conveyor-sorter rollers, separating facing sorting sections can be substantially aligned along planes perpendicular to the conveyor rollers, and have substantially adjacent edges.
  • annular collars having substantially adjacent edges when the edges are mutually aligned perpendicular to the axis of the conveyor-sorter rollers but also when your edges are slightly offset perpendicular to the axis of the conveyor rollers in the median plane of the table of sorting and in the vicinity of this plane.
  • the adjacent roller flanges are in a nested configuration also having mutually adjacent flanks.
  • each conveyor-sorter roller comprises only a single section sorter.
  • each sorter section thus comprises a flange at each of its ends and two successive sorter sections are separated by the same flange.
  • each sorter section may have a membrane mounted between two successive annular collars, the membranes of the sorting sections then forming the deformable floor of the sorter section.
  • the conveyor-sorter rollers may comprise a sleeve forming the deformable floor respectively of a plurality of sorting sections.
  • the sleeve may have extra thickness zones directly forming the annular collars.
  • the sleeve may also have annular grooves in which the annular collars are attached.
  • the annular flanges can also be mounted on a central shaft of the conveyor-sorting rollers.
  • the central shaft can be constituted, for example, by the rigid-walled internal chamber mentioned above.
  • annular collars mounted on a central shaft these may respectively have a cylindrical base substantially fitted to the central shaft.
  • the cylindrical base can then extend under the deformable floor and form a spacer between the annular flanges.
  • the annular flanges may have at least one flexible annular lip bearing against an adjacent sorting section.
  • the lip is flexible so as to be able to adapt to variations in the diameter of the sorter section.
  • Such a flexible lip can be provided on both sides of a collar separating two sorting sections.
  • the sorting sections can be provided with reliefs. These are, for example, pins or ribs extending along planes containing an axis of the conveyor-sorter roller.
  • the reliefs can be made in one piece with the deformable floor of the sorting sections. It can also act of reliefs brought back on the floor and carried out in a harder material than deformable floor. The use of a harder material makes it possible, if necessary, to delay wear of the deformable floor.
  • the modification of the diameter of the sorting sections can be carried out by means of a fluid under pressure or a fluid under vacuum.
  • the diameter can also be changed by mechanical means without the use of fluid.
  • the sorting table may comprise conveyor-sorter rollers with an alternating succession, according to a pattern of succession, of sorting sections and projecting annular flanges separating the sorting sections
  • the section diameter control device sorters may include an internal actuating shaft, concentric with the deformable wall of the sorting sections and with the annular flanges, the actuating shaft being provided with bosses spaced apart according to the same pattern of succession.
  • the actuating shaft has respectively with respect to the deformable wall, with respect to the sorting sections and to the collars, a freedom of axial sliding between a first position in which the bosses are received in housings adjacent to the annular collars and at least a second position in which the bosses coincide with the sorting sections.
  • the deformable floor is not constrained and can come to retract, on a bearing surface formed, for example, by a rigid internal floor or formed directly by the parts of the internal shaft devoid of bosses.
  • the bosses of the actuating shaft lift the deformable wall to increase the diameter of the sorting sections.
  • housings for the bosses are adjacent to the annular collars when they are provided in the immediate vicinity of the collars, for example under an edge of the sorting sections, or when the housings are under the annular collars.
  • the sorting sections are formed selectively by one of the central shaft and the sleeves in the second position.
  • the central shaft constitutes sorting sections with a first diameter.
  • the sleeves when the sleeves are extended between the annular collars, it is the sleeves which constitute, in a way, the sorting sections.
  • the sorting sections have, in this case, a second diameter, that of the sleeves, which is greater than that of the central shaft on which the sleeves slide.
  • the sleeves thus form part both of the device for controlling the diameter of the sorting sections and of the sorting sections themselves, the diameter of which they increase.
  • Such an implementation of the invention does not lend itself well to sorting fruit for juice, because the mechanisms which are not protected by a wall or a membrane are subject to dirt and offer more complicated cleaning possibilities.
  • the invention also relates to a sorter conveyor roller, for a sorting table as described above comprising sorting sections with adjustable diameter.
  • the figure 1 illustrates the general structure of the sort table and how it works
  • the sorting table 10 is essentially in the form of a roller conveyor 12, 14 extending substantially horizontally from a first inlet end 16 to a second waste outlet end 18.
  • the harvest, destemmed, includes both grape berries 24 and debris 26.
  • the debris can be leaves, petioles, stalks, small branches etc.
  • the first series of conveyor rollers 14 are driven in rotation, all in the same direction, to form a substantially homogeneous bed of grapes moving in a direction going from the first end 16 towards the second end 18 of the sorting table. .
  • the rotation of the rollers takes place along axes of rotation parallel to each other and perpendicular to the plane of the figure.
  • conveyor-sorter rollers 12 Just like the conveyor rollers 14 of the first series of rollers, the conveyor rollers--trleuni 12 are driven by the same rotational movement to ensure the conveying of the harvest from the first end. 16 towards the second end 18 of the sorting table 10.
  • a conveying direction is indicated with an arrow 15.
  • Lee conveyor-rollers sorters 12 have another function which is to separate the grape berries 24 and debris 26 which have a size greater than the grape berries and / or a distinct shape of the grape berries. It may be in particular debris of flattened shape, such as leaves, of elongated shape, such as petioles, or even bulky debris, such as stalks. As this appears better in the following figures, described below, the sorting conveyor rollers form a sieve sized for the selective passage of the grape berries 24 through the sorting table. It should be noted that debris of a size less than or equal to grape berries, such as seeds or small pieces of stalks or leaves, for example, can also pass through the screen.
  • the grape berries 24 pass through the table and are collected by gravity under the table in a receptacle, not shown.
  • the debris 26 is collected there, in a receptacle, not shown, with a view to their elimination or their separate recovery. In the case of a sorting table on board a machine, the debris is simply evacuated outside the machine.
  • a sieve that is too closed leads to the scrapping of grape berries or more generally fruit that should have crossed the table. Conversely, a screen that is too open leads to unwanted passage of debris through the sorting table with the grape berries.
  • the figures 2A and 2B show only part of the sorting table 10. They show a succession of six sorting conveyor rollers 12, equidistant, arranged along axes 11 parallel to each other, perpendicular to the conveying direction 15.
  • each sorter conveyor roller 12 comprises a plurality of sorting sections 30.
  • the sorting sections 30 of the same roller are delimited respectively by annular flanges 32.
  • the flanges 32 and the sorting sections 30 have a symmetry of revolution around the axis 11 of the conveyor-sorter roller 12 corresponding.
  • the flanges 32 have a diameter greater than the average diameter of the sorting sections 30.
  • the annular flanges 32 of the adjacent conveyor-sorter rollers 12 are substantially aligned along planes 35 perpendicular to the axes 11 of the conveyor-sorter rollers 12 so that their respective edges 34 are substantially adjacent in a median plane of the sorting table comprising the axes of the sorting conveyor rollers 12, and in the vicinity of this plane.
  • the adjacent annular flanges 32 of the various rollers are slightly offset on either side of these planes, alternately from one conveyor-trleur roller to the next. They thus have substantially adjacent edges 34 but also slightly overlapping in the plane of the sorting table.
  • the sorting sections 30 of the adjacent conveyor-sorting rollers and the annular collars 32 which separate them thus delimit spaces or openings 36 in the sorting table through which the grape berries, or more generally the fruits, can pass, in particular by gravity, when conveying the harvest or grapes.
  • the regular arrangement of the sorting sections 30 and the flanges 32 means that the spacings 36 constitute a regular mesh of the sieve of the sorting table.
  • the diameter of the sorting sections is adjustable.
  • all sections are of the adjustable diameter type.
  • the figure 2A shows the sorting sections with a smaller diameter than the sections of the figure 2B .
  • the spacings 36, and therefore the opening of the screen, are larger on the figure 2A that on the figure 2B .
  • the adjustable nature of the diameter of the sorter sections does not necessarily imply that it is constant over the entire length of a given sorter section. It can be noted, on the figure 2A , a concave shape of the sorting sections 30 from their edges, that is to say from the annular flanges 32, to their middle.
  • the picture 3 is a section of a conveyor-sorter roller 12 of the sorting table.
  • the roller comprises a central shaft 50 essentially formed by an elongated cylindrical tube 53.
  • the tube 53 is for example a tube made of stainless steel, aluminum or a tube made of composite fibers.
  • a sleeve 54 made of a natural material or a deformable thermoplastic elastomer, for example rubber or polyurethane, preferably compatible with contact with food materials.
  • the ends of the cylindrical tube 53 are closed by plugs 62, 64, partially fitted into the cylindrical tube 53 and connected in rotation with the tube by means of pins 40.
  • a first plug 62 receives an end piece 66 for receiving a bearing bearing not shown, and intended for mounting the conveyor-sorter roller 12 on a frame of the sorting table.
  • the opposite end of the cylindrical tube 53 receives a second stopper 64, also capable of receiving a rolling bearing, not shown.
  • the sleeve 54 is held on the ends of the central shaft 50 and more precisely on part of the plugs 62, 64. A sealed junction is made by means of collars 56, combined with seals 42, for example O-rings, and arranged on the plugs 62, 64.
  • the sleeve 54 constitutes a deformable external wall of an internal chamber 52.
  • the internal chamber 52 is also delimited by a rigid wall, opposite to the deformable wall, and formed the cylindrical tube 53 of the central shaft 50.
  • the sleeve 54 forms the sorting sections 30.
  • the internal chamber 52 extends between the sleeve 54 and the central shaft 50, and has compartments in each sorter section 30 of the sorter conveyor roller.
  • the sleeve 54 has annular grooves 58 between the sorting sections 30.
  • the annular grooves 58 receive the annular flanges 32.
  • the flanges 32 are made of a harder and more rigid plastic material than that of the sleeve 54.
  • the flanges participate in maintaining the sleeve 54 on the cylindrical tube 53 forming the central shaft 50. They prevent deformation of the sleeve at the height annular grooves 58 and maintain bearing soles 59 of the sleeve 54, opposite the annular grooves 58, in contact with the wall of the cylindrical tube 53.
  • Recessed passages 57 are formed in the support soles 59 so as to provide a fluid passage between the different compartments of the internal chamber 52 corresponding to the different sorting sections 30.
  • the second stopper 64 comprises a channel 70 from a tip 72.
  • the channel 70 is connected to the internal chamber 52 via one or more passages 60 passing through the stopper 64.
  • the channel 70 is thus in fluidic communication with the internal chamber 52 and with the sleeve 54.
  • the passage 60 shown in the picture 3 opens between the sealed junction of the sleeve 54 on the second cap 64, and the end of the cylindrical tube 53.
  • passages to the internal chamber 52 can also be made in the floor of the cylindrical tube 53. These passages then put in communication different parts of the internal chamber, corresponding to the different sorting sections, and put the internal chamber in communication with the interior of the cylindrical tube 53.
  • the channel 70 can open directly into a space internal 51 of the cylindrical tube 53.
  • the end piece 72 is mounted on the second cap 64 via a rotary joint 74. It is also connected to a source of fluid 76 at controlled pressure shown symbolically.
  • the pressurized fluid source constitutes, or at least forms part, in this embodiment, of a device for controlling the diameter of the sorting sections with adjustable diameter.
  • the fluid source 76 at controlled pressure can be, for example, a pneumatic energy installation of a cellar, with a pressure valve. It may also include a compressor and a pressurized air tank or a vacuum pump.
  • the fluid source may also include an air distributor unit and pressure limiters so as to supply the different sorting rollers 12 or different groups of sorting rollers 12 with different pressures.
  • the second stopper 64 receives a drive pinion 78 intended to drive the conveyor-sorter roller 12 in rotation.
  • the drive pinion is connected to an electric or hydraulic motor 80, represented symbolically by a chain or gear transmission for example.
  • the motor 80 can be equipped with a variable speed drive to vary the speed of rotation of the conveyor-sorter rollers 12.
  • the pressurized fluid enters the internal chamber 52 of the conveyor-sorter roller to expand the sleeve 54.
  • the sleeve is inflated, like of an air chamber.
  • the expansion of the sleeve is limited to the sorting sections 30 and in particular in the middle of the sorting sections. This nevertheless results in an increase in the average diameter of the sorting sections by deformation of the sleeve outwards.
  • the elasticity of the sleeve causes it to return to its position shown in picture 3 , against the central shaft 50.
  • the diameter of the sorting sections 30 decreases.
  • a reduction in the diameter of the sorting sections can also be carried out from a rest position remote from the central shaft 50 and by applying a vacuum to the internal chamber 52.
  • the figure 4 shows in perspective part of a conveyor-sorter roller 12 in an embodiment very close to the picture 3 , in a configuration where channel 70, visible at picture 3 opens into the internal space 51 of the cylindrical tube 53.
  • a cutaway shows the sleeve 54 resting on the central shaft 50 formed by a cylindrical tube 53.
  • the space between the sleeve 54 and the wall of the central shaft 50 defines an internal chamber 52.
  • the tear-off also makes it possible to see fluid passages 60, in particular air passages which place the internal space 51 of the cylindrical tube 53 in fluid communication with the internal chamber 52, and in particular its compartments corresponding to the different sorting sections 30.
  • the figure 4 also shows the flanges 32 housed in the annular grooves 58 of the sleeve.
  • FIG 4 shows reliefs 82 and 84 which respectively line the sorting sections 30 and the edges 34 of the collars 32.
  • the reliefs 82, 84 have the function of improving the drive of the fruit to be sorted.
  • the reliefs 82 on the sorting sections are ribs which extend along planes containing an axis of rotation 11 of the sorting roller 12. They are preferably made of the same material as that of the sleeve 54. They can also be made of a harder material than that of the sleeve 54. It is for example the same plastic material as the flanges 32.
  • the ribs of the sections sorters also taking part in driving the fruit through the screen of the sorting table.
  • the reliefs 84 on the edges of the collars 32 are barbs, with a regular angular spacing. They are used to convey the harvest or grapes to be sorted and participate in the orientation of debris by reducing the risk of it passing through the sieve of the sorting table.
  • the figure 5 shows another possible embodiment of the conveyor-sorter rollers 12.
  • a snatch from the figure 5 shows that, unlike the figure 4 , the flanges 32 are no longer mounted in the grooves of a sleeve forming the sorting sections.
  • the flanges 32 each have a cylindrical base 90 with an internal diameter adjusted to the central shaft 50.
  • the central shaft 50 is here also constituted by a cylindrical tube 53 comprising an internal space 51.
  • the cylindrical base 90 also has a function of spacing the flanges 32. Indeed the various flanges 32 are fitted onto the central shaft 50, respectively with their cylindrical bases 90 in contact. The flanges 32 are thus at an equal distance from each other.
  • the sorting sections 30 are formed by annular membranes 92 secured respectively to two successive collars 32.
  • the membranes 92 have ends housed in annular grooves 94 formed on either side of each collar 32 in the vicinity of its cylindrical base 90. They form sheaths around the central shaft and have symmetry of revolution.
  • the space between the annular membranes 92 and the cylindrical bases 90 of the flanges 32 defines multiple internal chambers 52 corresponding respectively to sorting sections 30.
  • passages 60 made both in the cylindrical tube 53 of the central shaft 50 and in the cylindrical bases 90 of the collars 32.
  • the passages 60 make it possible to place the internal space 51 of the cylindrical tube in fluid communication. 53 with the various internal chambers 52 of the conveyor-sorter roller 12 and thus with the internal face of the membranes 92.
  • the pressurized fluid for example pressurized air
  • the membranes 92 deform essentially in their middle.
  • the figure 6 shows yet another possible embodiment of the conveyor-sorter rollers 12.
  • the embodiment of the figure 6 is similar to that of the figure 4 , insofar as the sorting sections 30 are formed by a sleeve 54 made of a deformable plastic material.
  • the collars 32 are formed in one piece with the sleeve 54 and constitute extra thicknesses of the sleeve.
  • the extra thickness of the material forming the sleeve 54 has the effect of increasing its rigidity and of reducing the possibility of deformation for the collars 32.
  • the collars 32 are thus not deformed, or at least very slightly deformed, during a setting. under pressure and during a modification of the diameter of the sorting sections 30
  • the central shaft 60 although having a symmetry of revolution is not cylindrical. It has a wavy relief, obtained, for example, by hydroforming.
  • the relief of the central shaft corresponds to the alternation of the sorting sections 30 and the flanges 32. This arrangement makes it possible to maintain the distance of the sorting sections 30.
  • a channel 61 provided in the sleeve 54 can be seen opposite a relief 82 of the sleeve.
  • the channel 61 is flush with an internal face of the sleeve 54. It extends axially along the sorting sections 30, and passes under the flanges 32 shown in figure 6 .
  • the channel 61 promotes the fluidic communication of the sleeve 54 with the internal space 51 of the central shaft 50.
  • the channel 61 connects the different compartments of the internal chamber 52, corresponding to the different sorting sections 30 of the conveyor-sorting roller 12 It thus contributes to distributing the pressure in the various internal chamber compartments 52 for a uniform increase in the diameter of all the sorting sections, in particular at the start of pressurization.
  • the sleeve 54 is lifted from the central shaft and itself constitutes a parol of the internal chamber 52 in the regions corresponding to the sorting sections.
  • the figure 8 shows yet another possible embodiment of the conveyor-sorter rollers 12. It is also similar to the embodiment of the figure 4 , insofar as the floor of the sorting sections 30 is formed by a sleeve 54 which extends continuously over the central shaft 50.
  • the collars are provided with flexible annular lips 96, extending on either side of the collar over the sorting sections 30.
  • the flexible lips 96 are fixed in annular grooves 98 of the collars 32, in the vicinity of the sleeve 54. These grooves are comparable to the grooves 94 housing the annular membranes 92 of the figure 5 .
  • the annular lips 96 of the figure 8 extend only over part of the axial length of the sorting sections 30. They rest on the outer face of the sleeve 54.
  • the annular lips 96 accompany the deformation of the sorting sections 30 during an adjustment of their diameter.
  • This embodiment allows simpler manufacture, for example by extrusion, of the sleeve 54 and to find a concave shape of the sorter sections 30, a shape more suited in particular to the conveying of long debris such as petioles.
  • the sorting sections 30 can be formed by the combination of a sleeve 54 and flanges 32 similar to those of the figure 8 , but not comprising additional annular lips 96. This more economical solution simplifies the washing operation of the conveyor-sorting rollers.
  • the figure 9 shows a possible embodiment of a sorter conveyor roller 12 in which the device for controlling the diameter of the sorting sections does not use fluid at controlled pressure to vary the diameter of the sorting sections 30, but a mechanical actuation shaft.
  • the sorter conveyor roller 12 of the figure 9 has a central shaft 50 covered with a sleeve 54 essentially forming the sorting sections 30.
  • Collars 32 are housed in grooves 38. They form with the sorting sections 30 an alternating succession according to a pattern of succession. In the example of the figure 9 the pattern of succession is regular.
  • the sorting sections 30 all have the same length and the flanges 32 are regularly spaced along the axis 11 of the roller.
  • the actuating shaft 100 is provided with a plurality of bosses 102 arranged on the one hand according to the same pattern of succession as the sorting sections and the collars and on the other hand distributed angularly in a uniform manner in a plane perpendicular to the shaft 11 of the conveyor-trisur roller.
  • the spacing of the bosses 102 along the axis 102 here corresponds to that of the collars 32 and also to that of the sorting sections 30.
  • the bosses 102 pass through the central shaft 50 in slots 110 provided at this effect.
  • the actuating shaft 100 has, with respect to the central shaft 50, a freedom of sliding indicated by a double arrow 104.
  • the actuating shaft can thus slide between a first position in which the bosses 102 are located in a housing 106 in the vicinity of the flanges 32, at the edge of the sorting sections 30, and a second position in which the bosses 102 are substantially aligned with the middle of the sorting sections 30.
  • the bosses do not interact with the sleeve 54.
  • the sleeve 54 has, along the axis 11 of the conveyor-sorter roller, a concavity whose center substantially coincides with the middle of the sorter section 30.
  • the actuating shaft of the conveyor-sorting rollers can be moved between the first position and the second position, for example, by an electromagnetic control, a mechanical control, a pneumatic control or a hydraulic control, for the adjustment of the diameter sorting sections and therefore the opening of the screen of the sorting table which is equipped with it.
  • These members are part of the device for controlling the diameter of the sorting sections with adjustable diameter.

Landscapes

  • Sorting Of Articles (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP17784366.1A 2016-10-24 2017-09-25 Table de tri à crible ajustable Active EP3528969B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1660277A FR3057787B1 (fr) 2016-10-24 2016-10-24 Table de tri a crible ajustable
PCT/FR2017/052571 WO2018078229A1 (fr) 2016-10-24 2017-09-25 Table de tri à crible ajustable

Publications (2)

Publication Number Publication Date
EP3528969A1 EP3528969A1 (fr) 2019-08-28
EP3528969B1 true EP3528969B1 (fr) 2022-06-22

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US (1) US10994307B2 (zh)
EP (1) EP3528969B1 (zh)
CN (1) CN109963660B (zh)
AU (1) AU2017348761B2 (zh)
CL (1) CL2019001051A1 (zh)
ES (1) ES2926519T3 (zh)
FR (1) FR3057787B1 (zh)
WO (1) WO2018078229A1 (zh)
ZA (1) ZA201901931B (zh)

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CN108609227A (zh) * 2018-06-11 2018-10-02 重庆鼎赛输送机械有限公司 一种包装用输送设备
CN110665786B (zh) * 2019-11-23 2022-12-13 义乌市奥飞创意设计有限公司 尿素板结块剔除及尿素分级筛选同步装置及使用方法
CN111744760B (zh) * 2020-05-28 2021-12-10 湖州国峰智能科技有限公司 一种基于风能去除杂草的兔粪养鱼分拣装置
CN113522730B (zh) * 2021-05-31 2022-09-06 山东锐恒住宅工业科技有限公司 一种再生骨料气动可控多级分级板及其使用方法
CN117358570B (zh) * 2023-12-07 2024-02-27 新乡市昆仑筛分机械设计有限公司 一种滚轴筛

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Also Published As

Publication number Publication date
FR3057787A1 (fr) 2018-04-27
CN109963660B (zh) 2022-12-20
CN109963660A (zh) 2019-07-02
ZA201901931B (en) 2019-11-27
US20190240701A1 (en) 2019-08-08
AU2017348761B2 (en) 2022-09-29
FR3057787B1 (fr) 2021-03-05
AU2017348761A1 (en) 2019-05-02
EP3528969A1 (fr) 2019-08-28
CL2019001051A1 (es) 2019-07-19
WO2018078229A1 (fr) 2018-05-03
ES2926519T3 (es) 2022-10-26
US10994307B2 (en) 2021-05-04
NZ752608A (en) 2020-10-30

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