EP3528968B1 - Table de tri pour fruits à crible adaptatif - Google Patents

Table de tri pour fruits à crible adaptatif Download PDF

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Publication number
EP3528968B1
EP3528968B1 EP17784367.9A EP17784367A EP3528968B1 EP 3528968 B1 EP3528968 B1 EP 3528968B1 EP 17784367 A EP17784367 A EP 17784367A EP 3528968 B1 EP3528968 B1 EP 3528968B1
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EP
European Patent Office
Prior art keywords
screen
fruit
conveyor
sorting table
table according
Prior art date
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Active
Application number
EP17784367.9A
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German (de)
English (en)
French (fr)
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EP3528968A1 (fr
Inventor
Jean-Marc Gialis
Remi Niero
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.)
Pellenc SAS
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Pellenc SAS
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Publication of EP3528968A1 publication Critical patent/EP3528968A1/fr
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Classifications

    • 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
    • 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
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • 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
    • 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
    • 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
    • B07B13/18—Control

Definitions

  • the present invention relates to an adaptive sieve fruit sorting table. It relates more precisely to a sorting table which can be used for the elimination of foreign bodies remaining mixed with a harvest of fruit or with a harvest.
  • a sorting table makes it possible in particular to separate on the one hand grape berries and on the other hand excavations, petioles or debris larger or more elongated than grape berries (leaves, branches, petioles, stalks,. ..). This is debris likely to be found in a harvest and in particular a harvest that has undergone a destemming operation.
  • the invention can be implemented for the elimination of debris likely to be found in a fruit crop. and in particular small fruits such as currants, blackcurrant, blackberries, raspberries, olives, cranberries, cranberries or even other berries or drupes.
  • Known sort tables for example that of the document FR 2 920 278 , comprise a plurality of parallel conveyor-sorting rollers, arranged according to a sorting plan.
  • the conveyor-sorting rollers are regularly spaced between them and constitute a screen.
  • a crop or a harvest poured into an inlet of the sorting table is conveyed towards an outlet end of the sorting table by setting the conveyor-sorting rollers in rotation.
  • the fruits or berries can pass through the spaces provided between the conveyor-sorting rollers to be collected under the sorting table.
  • the debris in particular the petioles, leaves, stems or small branches found in the harvest or the vintage, continue to be conveyed to the outlet end of the sorting table.
  • This debris by virtue of its size, by its elongated or flattened form factor, or by its weight, is, in fact, more likely to continue conveying parallel to the sorting table rather than passing through the sorting table.
  • the main parameters for adjusting a sorting table are the discharge rate of fruit on the table, the conveying speed, determined by the speed of rotation of the conveyor-sorting rollers, and the spacing between the determining conveyor-sorting rollers. the opening of the screen. Too small a spacing between the rollers, too much rotation speed or too high a discharge rate will cause fruit to arrive at the output end of the table and be discarded with debris, conversely, too great a spacing between the rollers or a too low speed of rotation favor an unwanted passage of debris through the sorting table, with the fruit.
  • the speed of rotation of the conveyor-trleura rollers can be adjusted by controlling the motor means for rotating the conveyor-sorting rollers.
  • the opening of the screen, formed by the spacings between the conveyor-sorting rollers can be modified by adjusting a spacing between the axes of the conveyor-sorting rollers.
  • the opening of the sieve that is to say its capacity to let the fruit pass, depends in fact on the spacing between the sorting conveyor rollers.
  • the document EP 2 457 671 proposes to mount the ends of the conveyor-sorting rollers on slides perpendicular to their axis.
  • the document FROM 30 27 651 describes a sorting device with a possibility of adjusting the opening and the inclination of a roller conveyor according to the preamble of claim 1.
  • a first problem is that an optimal setting of the sorting table does not generally take into account the variation in the quality or the quantity of the harvest to be sorted.
  • the variation in quality is understood as a variation in the size of the fruit or berries or as a variation in the number and type of debris mixed with the fruit.
  • a variation in quality may be due to the grape variety of the harvest. It can also depend on the plot, or even a portion of the plot, of origin of the grapes from the harvest to be sorted.
  • the variation in quality can also be seen between an intact harvest and a harvest with crushed or altered berries.
  • the variation in the quantity is understood as a variation in the flow of fruit or berries at the entrance to the sorting table. It can be linked to variations in the quantity of bunches of grapes harvested mechanically by a harvesting machine. It can also be linked to variations in the flow of fruit coming from a device for feeding a sorting table used in a cellar. Another difficulty is linked to the permanent evaluation of the correct adjustment of the sorting table and the early detection of an inadequate adjustment. Indeed, the late observation of a too high concentration of debris in the sorted fruits or, on the contrary, the presence of fruit in the discarded debris leads to a qualitative and / or quantitative loss on the sorted fruit.
  • the object of the present invention is thus to provide a sorting table for fruits which does not present the difficulties mentioned above.
  • One aim is in particular to provide an adaptive sorting table with a capacity for evaluating the adequacy of the settings with the crop to be sorted, and a capacity for adjusting the sorting parameters, during a sorting operation, without interrupting the operation of the sorting table.
  • fruit or “recotte” are understood without limitation as to the nature of the fruit or of the harvest and thus also include a harvest of grapes, or destemmed grapes.
  • slaughter is understood as a mixture of fruit and unwanted debris mixed with the fruit at the time of collection.
  • Debris may include foliage, small branches, petioles, stalks, or other foreign material.
  • the conveyor intake area is a part of the conveyor onto which the crop is dumped. It is preferably located at the entrance of the conveyor.
  • a hopper or other weir mechanism may be provided above the inlet area to supply the conveyor and to distribute the crop to be sorted therein.
  • the discharge area of the sorting table is preferably located at an outlet of the conveyor. It is located downstream of the admission zone relative to a conveying direction.
  • the discharge zone receives the debris which has not passed through the screen of the sorting table, so as to eliminate them or to recover them separately.
  • the screen extends in the conveying plane between the intake area and the discharge area.
  • the length of the screen may be equal to or less than the distance between the inlet zone and the discharge zone. It should be noted that part of the conveyor can directly form the screen. This is the case when the conveyor comprises sorting rollers intended to convey the crop. Such sorting rollers have between them spaces which constitute the openings of the screen.
  • the fruits which pass through the openings of the screen are subtracted from the container conveyed according to the conveying plan. They are collected below the screen, ie under the conveying plane.
  • the conveying plane may preferably be a substantially horizontal plane. It may also be inclined relative to the horizontal, as emerges from the remainder of the description.
  • the device for measuring the quantity or flow of fruit passing through the screen does not measure the total quantity or flow of fruit but is limited to only a part of the screen. This part is designated by "reference section". Measurements can be performed on several reference sections following one another along the screen along a conveying axis. Each reference section can in this case include its own measuring device. The signals from the various measuring devices, or the signals from the sensors that they contain, can then be combined to establish sorting table adjustment commands.
  • two reference sections can be advantageous for an optimal adjustment of the screen.
  • a sorting table capable of receiving both intact harvests and crushed or altered harvests.
  • the use of two reference sections makes it possible in this case to compare the flow rates of grape berries passing through the screen at the start and at the end of the sorting table, for example.
  • a single reference section is mentioned in the remainder of the description, without however prejudging the number of reference sections used for the sorting table.
  • the quantity of fruit or the flow of fruit passing through the screen on the reference section is used to estimate the quantity of fruit likely to reach the discharge zone at the end of the conveyor.
  • the reference section is located at a distance from the conveyor inlet area. Preferably, it can be located as close as possible to the end of the screen facing the discharge area. Indeed, if a large quantity of fruit passes through the sieve on its reference section, and if this section is close to the end of the screen, it can be estimated that a significant part of the fruits of the harvest was not selected before the reference section and may reach the discharge area.
  • the measurement of the measuring device can relate to an absolute quantity of fruit passing through the reference section of the screen, for example during the treatment of a harvest batch.
  • the device can also be configured to measure a flow rate or a flow, that is to say a quantity of fruit passing through the reference section per unit of time.
  • the device for adjusting the sorting table is intended to modify its selectivity. It can act on the conveying speed, knowing that a higher conveying speed increases the selectivity of the screen, the fruits having more tendency to remain in the conveying plane and not to pass through the screen when they are animated. high speed in the conveying direction.
  • the adjustment device can still act on the size of the screen.
  • the size corresponds to the opening of the screen, ie its selectivities.
  • the size is determined by the size of the fruit passages of the screen.
  • the size of the screen can be adjusted by modifying, for example, the spacing between the conveyor-sorting rollers, It should be noted that the size of the fruit passages of the sieve is not necessarily constant or uniform along the sorting table. The size is thus understood as an average value of the opening of the screen.
  • the adjustment device can also act on the quantity of fruit present on the screen, by modifying a feed rate of the conveyor.
  • This flow can be modified, for example by modifying the opening or the slope of a crop discharge hopper on the conveyor inlet zone, by modifying the forward speed of the harvesting machine.
  • the adjustment device can act on an inclination of the conveyor and therefore of the screen with respect to the horizontal in the direction of conveying. A small inclination of the screen with respect to the horizontal, or even a negative inclination by orienting the discharge zone upwards, tends to reduce its selectivity while a greater inclination tends to increase the selectivity of the screen, the forces of gravity accelerating the speed of the fruit.
  • the measurement performed by the measuring device on the reference section can be displayed and can be used by a user to activate the adjustment device.
  • the adjustment device can be slaved to the measuring device, for automatic adjustment.
  • the adjustment device can be configured to adjust in real time the setting of the sorting table as a function of the quantity of fruit passing through the screen on the reference section, and thus to guarantee an optimal adjustment taking into account in particular the variations of the quality of the harvest treated.
  • the enslavement is described in more detail in the remainder of the text.
  • the device for measuring the quantity or flow of fruit passing through the reference section of the screen can be a device for measuring an instantaneous value, or, preferably, an integrating measuring device carrying out a measurement over a certain period of time. .
  • an integrating measuring device makes it possible to smooth the measurements and avoids adjusting the sorting table taking account of abnormal instantaneous values.
  • the latter may comprise at least one optical barrier arranged on a fruit passage formed under the reference section of the screen, and an opening totalizer of the optical barrier. It is considered that the optical barrier is placed on a fruit passage connected to the reference section when the fruits passing through the part of the screen corresponding to the reference section are caused to pass in front of the optical barrier before reaching the reception area of the sorted fruits.
  • the optical barrier may include one or more light beams which are interrupted by the passage of fruit, or debris passing through the screen, coming from the reference section of the screen.
  • the number and the diameter of the light beams are preferably adapted to the size of the fruits so as to avoid an untimely opening of the barrier in the case of passage in front of the optical barrier of objects significantly smaller than the fruits, for example. , glitches or small debris.
  • the opening totalizer associated with the optical barrier can be a counter of a number of openings per unit of time.
  • the totalizer thus counts the number of openings of the optical barrier per unit of time and delivers a measurement signal representative of the number of fruits passed through the reference section of the screen per unit of time,
  • the use of a counter for the number of openings is suitable when the flow of fruit passing through the reference section of the screen is relatively low.
  • the opening totalizer can preferably be configured to establish a relationship between an opening time duration of the light barrier and a reference duration.
  • the opening totalizer can be configured to relate an opening time duration of the light barrier to a closing time duration of the light barrier.
  • the times of opening, respectively of closing, of the optical barrier are understood as times during which the beam is interrupted, respectively uninterrupted.
  • the opening totalizer can also combine the two counting modes.
  • the device for measuring the quantity or flow of fruit passing through the reference section of the sieve may also include a camera and an image processing system associated with the camera.
  • the camera and image processing system can be configured to establish a number and size of objects passing through the reference section of the screen.
  • the processing of the image directly provides an estimate of the fruit flow rate in the reference section of the screen and makes it possible to discriminate, if necessary, the fruits from the debris accidentally passing through the screen.
  • the latter may include a deflector arranged in a fruit chute between the reference section of the screen and the reception area of sorted fruit, and a totalizer impacts on the deflector.
  • the deflector is, for example, a sheet onto which the fruits which pass through the reference section of the screen fall, and the impact totalizer may include an accelerometer integral with the deflector.
  • the accelerometer can, in this case, be preferably calibrated to count impacts of fruit and not of smaller objects such as fruit seeds. Both impact counting and light barrier aperture count are better suited for counting a discrete flow of fruit than for evaluating a continuous flow. It is thus preferably reserved for a reference section of small length.
  • the measuring device associated with the reference section can also include a deflector mounted to pivot in a fruit chute between the reference section of the screen and the area for receiving sorted fruit.
  • the pivoting deflector is associated with a spring for returning the deflector to a rest position, and an angular deflection sensor of the deflector relative to the rest position.
  • the sensor can be an optical sensor or a potentiometer sensor, for example. In this case, the magnitude of the angular deflection of the deflector depends on the number of fruits which reach the deflector per unit of time and gives a measurement of the flow of fruits passing through the reference section of the screen.
  • the measuring device may also include a fruit receptacle arranged downstream of the reference section of the screen in the zone for receiving sorted fruit, and a fruit mass totalizer in the receptacle.
  • the mass totalizer may be a strain gauge measuring the mass or the increase in mass of fruit in the receptacle.
  • the receptacle may include a system for automatically emptying its contents within the mass of sorted fruits.
  • the adjustment of the sorting table can take place by acting on one or more parameters.
  • One of these parameters may in particular be the conveying speed.
  • a slow conveying favors the passage of the fruits through the openings of the screen before they reach the discharge zone, conversely, a fast conveying favors the advance of the fruits in the conveying plane rather than their crossing of the sieve, this which thus tends to increase the selectivity of the screen.
  • the high and low setpoints can be set experimentally during a calibration phase depending in particular on the location and the length of the reference section of the screen, so that the lowest possible number of fruits, but not zero , reaches the discharge area of the sorting table.
  • the reference section may preferably have a length along a conveying axis of between one hundredth and one quarter of a total length of the screen.
  • the length of the reference section is understood as the cumulative length of the different reference sections.
  • the reference section can be located, preferably at a distance from an entrance of the screen of between 75% and 90% of a total length of the screen.
  • the entrance to the screen is understood as its end facing the admission area of the sorting table.
  • the figure 1 shows a sorting table 10 according to the invention. It comprises a roller conveyor 12 extending from an inlet zone 14 to a discharge zone 16 along a conveying plane 18, the conveying plane is in a substantially horizontal position. However, the sorting table, and therefore its conveying plane, can be inclined relative to the horizontal by a jack mechanism 20.
  • variable flow hopper 22 is arranged above the intake zone 14 to discharge a crop therein.
  • a crop In the case of figure 1 , it is a harvest comprising both grape berries 24 and debris 26, such as leaves, petioles or stalks to be eliminated.
  • the roller conveyor 12 comprises a first series of conveyor rollers 28, substantially contiguous arranged in the conveying plane 18 and perpendicular to a conveying axis indicated by an arrow C.
  • the arrow C also indicates a direction of conveying the zone of admission 14 to the discharge zone 18.
  • a second series of rollers which are sorting conveyor rollers 30.
  • sorting conveyor rollers is understood to mean rollers between which proper spacings are made. selectively passing fruit, or debris of a size similar or smaller to the fruit.
  • the sorting conveyor rollers 30 are also arranged in the conveyor plane 18, perpendicular to the conveying axis C, following the conveyor rollers 28.
  • the screen 32 Due to the spacing between the successive sorting conveyor rollers, they constitute a screen 32.
  • the screen 32 extends in the extension of the conveying rollers 28 to the discharge end 16 of the sorting table 10.
  • the screen has a size depending essentially on the spacings, or passage openings, formed between the rollers sorting conveyors 30.
  • the caliber of the screen can be adjusted, in particular by a sliding device 34 making it possible to modify the distance between the sorting conveyor rollers.
  • the slide device 34 is symbolically represented on the figure 1 .
  • the conveyor rollers 28, just like the conveyor-sorting rollers 30 are driven in rotation by an electric motor 36 represented symbolically. All the rollers are rotated in the same direction, in this case clockwise in the case of figure 1 to advance the harvest from the inlet zone 14 to the discharge zone 16, parallel to the conveying axis C.
  • the grape berries 24 in contact with the sieve or close to the sieve pass through the sieve to reach a zone 40 for receiving fruits sorted under the sieve 32 and under the conveying plane 18.
  • a sorted fruit collector, not shown, can be placed in this zone.
  • the number of grape berries 24 remaining on the sorting table decreases as the conveying along the conveying axis C.
  • the sorting table of the figure 1 is shown in an optimum configuration in which no more fruit, or almost no fruit remains on the sorting table at the end of the screen 32 and on the approach to the discharge zone 16. Thus only the debris 26 remains on sorting table and are dumped in the landfill area for disposal
  • Screen 32 on the sorting table of the figure 1 comprises a reference section 42 constituted here by two reference conveyor-sorting rollers.
  • the reference section 42 is arranged in the vicinity of the end of the screen facing the discharge zone 16. It is associated with a measuring device 50 intended to measure a quantity or flow of fruit, here grape bales 24, passing through the screen on the reference section.
  • the measuring device 50 determines the quantity of fruit or the flow of fruit passing through the screen between the two conveyor-sorting rollers of the reference section 42.
  • the measuring device 50 delivers a measuring signal to an adjustment device 52 acting on various parameters of the sorting table.
  • This is, for example, an optical sensor measuring the occultations by the grape bales, or possibly the debris, passing through the sorting table at the level of the reference section 42.
  • the adjustment device 52 acts in particular on powering the electric motor 36 to vary the rotational speed of the rollers 28, 30 and therefore the conveying speed. It also acts on the jack mechanism 20 intended to tilt the sorting table. Finally, it acts on the sliding device 34 intended to adjust the opening and therefore the caliber of the screen 32 of the sorting table.
  • the adjustment device can also act on the speed of the harvesting machine to adjust the flow rate of the harvest arriving in the admission zone of the sorting table. .
  • the adjustment device can send a signal to the grape supply system of the sorting table to vary the flow rate of the harvest arriving in the admission zone of the sorting table.
  • the figure 2 is a perspective of a conveyor 12 of a sorting table according to the invention.
  • the conveyor 12 of the figure 2 extends from an inlet zone 14 to a discharge zone 16.
  • the conveyor is formed of a plurality of rollers 28, 30. In the admission zone there are four conveyor rollers 28. These rollers are almost contiguous. They are used to distribute the crop and cause it to be conveyed along the conveying axis C, perpendicular to the rollers, when they are set in rotation. They are also used to evacuate between the rollers juices and very small debris such as seeds.
  • the conveyor rollers 28 are followed by a plurality of sorting conveyor rollers 30 also capable of being rotated, together with the conveyor rollers 28, for conveying the crop.
  • Each conveyor roller has a regular alternation of sorter sections 60 and Annular collars 62.
  • the annular collars have a diameter greater than the sorter sections and overlap slightly from one conveyor-sorter roller to the next.
  • the sorter sections 60, successive conveyor rollers, which are opposite, do not touch. They have between them spaces or openings 66.
  • the spaces 66 are thus delimited by the sorter sections perpendicular to the conveying axis C and are delimited by the annular flanges parallel to the conveying axis C. Thanks to the spacings 66 the rollers Sorting conveyors 30 constitute a screen 32.
  • Part of the screen, in the vicinity of the discharge zone 16 constitutes the reference section 42 of the screen.
  • the figure 3 is a plan view, parallel to its axis and in a plane perpendicular to the conveying axis C of the figures 1 and 2 , of a conveyor-sorter roller 30 taken from the reference section of the screen.
  • a transmission mechanism 64 connected to the electric motor 36, represented symbolically.
  • the transmission mechanism 64 makes it possible to communicate to the conveyor-sorter roller 30 a rotational movement for conveying the harvest.
  • the conveyed harvest comprises grape berries 24 and debris 26 is found on the roller, in contact with the sorter sections 60 and the annular collars 62.
  • the figure 3 also shows the measuring device 50, which here comprises an optical barrier 70 formed by an emitter 72 and a receiver 74 of a light beam.
  • the receiver 74 forms an opening totalizer.
  • the light beam from the optical barrier extends parallel to the sorting conveyor roller 30 under the spaces 66 which separate the sorting sections 60 from those of the following conveyor-sorting roller, not shown.
  • the grape berries which pass through the reference section 42 of the sieve 32, thus cause openings of the optical barrier 70, as they fall towards the reception zone 40 of sorted fruits.
  • the measuring device 50 and in particular the opening totalizer, delivers a signal counting the number of openings or the relative duration of the openings of the optical barrier 70. This signal is sent to the adjustment device 52 already mentioned in relationship with figure 1 .
  • the measurement device may include a camera 76 associated with an image processing system 78, for example a software-controlled system, to deliver a signal representative of a flow. of fruit through the reference section 42 of the screen 32.
  • an image processing system 78 for example a software-controlled system
  • the figure 4 is a longitudinal section comparable to the figure 1 and shows another possible embodiment of the measuring device 50.
  • the sieve 32 of the figure 4 presents a reference section 42 formed of three sorting conveyor rollers 30.
  • a measuring device 50 is associated with the reference section 42.
  • the measuring device comprises a deflector 80, for example a metal plate, mounted under the reference section 42 of the screen 32 so as to be struck by the grape bales 24 which pass through the reference section 42 of the screen 32, during their fall towards the reception zone 40 of sorted fruit.
  • the deflector 80 is associated with impact totalizers 82.
  • the impact totalizers can be optical or mechanical devices, for example accelerometers, providing a measurement signal for the adjustment device 52.
  • the impact totalizers can be be calibrated to be sensitive to the fall of sorted grape berries and not to simple seeds, for example.
  • the figure 5 shows a variant of the device of the figure 4 in which the reference section extends over 4 consecutive sorting conveyor rollers.
  • the measuring device 50 also includes a deflector 80.
  • Each deflector 80 is pivotally mounted in the fruit chute under the reference section 42 of the screen 32.
  • the deflector 80 is loaded by a return spring 86 which returns it to a rest position. The fall of the grape berries 24 passing through the reference section 42 of the screen 32 and reaching the deflector 80 tend to cause the deflector to pivot out of its rest position.
  • an angular deflection sensor 88 measures the deflection angle of the deflector and delivers a signal representative of the flow of berries to the device adjustment 52.
  • the angular deflection of the deflector 80, relative to its rest position is proportional to the flow of the berries, or at least representative of a flow of berries reaching the deflector, and therefore the flow of berries passing through the reference section 42 of the screen.
  • the figure 6 is a longitudinal section of a sorting table comparable to that of the figure 1 and illustrates yet another possible embodiment of the device 50 for measuring the flow of berries through a reference section 42 of the screen 32.
  • the device for measuring the flow of berries from the figure 6 comprises a receptacle 90 disposed in the zone 40 for receiving sorted fruit.
  • the receptacle 90 has an opening 92 adjusted to the size of the reference section 42 of the screen 32, and disposed under the reference section, Thus the berries 24 passing through the screen 32 through the reference section 42 are collected in the receptacle 90.
  • the receptacle 90 is associated with one or more strain sensors 94, and thus constitutes a balance or a mass totalizer making it possible to measure a mass of berries collected.
  • the stress sensor can deliver a mass, mass increase, or mass increase signal per unit of time, representative of the flow of berries passing through the reference section 42 of the screen.
  • This signal is supplied to the adjustment device 52, so as to control the parameters of the sorting table. Indeed, as explained above, it is possible to adjust the conveying speed, the admission flow, the slope of the sorting table and the size of the screen so as to obtain a target flow of berries through the reference section. .
  • This target flow is such that the number of bays arriving at the discharge zone 16 is almost zero.

Landscapes

  • Sorting Of Articles (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
EP17784367.9A 2016-10-24 2017-09-25 Table de tri pour fruits à crible adaptatif Active EP3528968B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1660278A FR3057788B1 (fr) 2016-10-24 2016-10-24 Table de tri pour fruits a crible adaptatif
PCT/FR2017/052572 WO2018078230A1 (fr) 2016-10-24 2017-09-25 Table de tri pour fruits à crible adaptatif

Publications (2)

Publication Number Publication Date
EP3528968A1 EP3528968A1 (fr) 2019-08-28
EP3528968B1 true EP3528968B1 (fr) 2020-11-18

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EP17784367.9A Active EP3528968B1 (fr) 2016-10-24 2017-09-25 Table de tri pour fruits à crible adaptatif

Country Status (9)

Country Link
US (1) US11027313B2 (es)
EP (1) EP3528968B1 (es)
CN (1) CN109922895A (es)
AU (1) AU2017348762B2 (es)
CL (1) CL2019001052A1 (es)
ES (1) ES2847254T3 (es)
FR (1) FR3057788B1 (es)
WO (1) WO2018078230A1 (es)
ZA (1) ZA201901932B (es)

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Publication number Priority date Publication date Assignee Title
EP3342272A1 (en) * 2016-12-28 2018-07-04 CNH Industrial France Device comprising a motorized conveyor for conveying a flow of harvested crop
CA3104886A1 (en) 2018-06-29 2020-01-02 Malcolm VILLIS Docking station with retractable guide apparatus for ummanned aerial vehicle
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ES2847254T3 (es) 2021-08-02
US11027313B2 (en) 2021-06-08
AU2017348762A1 (en) 2019-05-23
US20190232337A1 (en) 2019-08-01
FR3057788B1 (fr) 2018-10-19
WO2018078230A1 (fr) 2018-05-03
ZA201901932B (en) 2019-11-27
CL2019001052A1 (es) 2019-07-19
EP3528968A1 (fr) 2019-08-28
AU2017348762B2 (en) 2022-09-29
CN109922895A (zh) 2019-06-21
NZ752718A (en) 2020-10-30
FR3057788A1 (fr) 2018-04-27

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