WO2021069599A1 - Machine de distribution agricole dont la vitesse d'écoulement d'air comprimé peut être modifiée en fonction de la vitesse d'entraînement et/ou en fonction du type de semence - Google Patents

Machine de distribution agricole dont la vitesse d'écoulement d'air comprimé peut être modifiée en fonction de la vitesse d'entraînement et/ou en fonction du type de semence Download PDF

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Publication number
WO2021069599A1
WO2021069599A1 PCT/EP2020/078291 EP2020078291W WO2021069599A1 WO 2021069599 A1 WO2021069599 A1 WO 2021069599A1 EP 2020078291 W EP2020078291 W EP 2020078291W WO 2021069599 A1 WO2021069599 A1 WO 2021069599A1
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WO
WIPO (PCT)
Prior art keywords
compressed air
seed
distributing machine
speed
agricultural distributing
Prior art date
Application number
PCT/EP2020/078291
Other languages
German (de)
English (en)
Inventor
Manfred ERHARD
Original Assignee
Horsch Maschinen Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Horsch Maschinen Gmbh filed Critical Horsch Maschinen Gmbh
Publication of WO2021069599A1 publication Critical patent/WO2021069599A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C7/00—Sowing
    • A01C7/04—Single-grain seeders with or without suction devices
    • A01C7/042—Single-grain seeders with or without suction devices using pneumatic means
    • A01C7/044—Pneumatic seed wheels
    • A01C7/046—Pneumatic seed wheels with perforated seeding discs
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C7/00—Sowing
    • A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
    • A01C7/081—Seeders depositing seeds in rows using pneumatic means
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C7/00—Sowing
    • A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
    • A01C7/10—Devices for adjusting the seed-box ; Regulation of machines for depositing quantities at intervals
    • A01C7/102—Regulating or controlling the seed rate
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C7/00—Sowing
    • A01C7/20—Parts of seeders for conducting and depositing seed
    • A01C7/206—Seed pipes

Definitions

  • the invention relates to an agricultural distributing machine and an associated operating method, preferably for single-grain sowing, with at least one compressed air generating device and a plurality of separating devices for separating row units comprising seeds (e.g. seeds).
  • seeds e.g. seeds
  • the driving speed can, for. B. in the context of the invention at suitable points (z. B. the agricultural distribution machine, in particular on one or more row units and / or a frame structure, and / or the tractor for pulling the agricultural distribution machine) appropriately recorded, measured and / or suitable Way can be determined (e.g. calculated).
  • B. at least one speed sensor (expediently on one or more row units and / or at least one speed sensor on a tractor for pulling the agricultural distributor) can be used, but also z.
  • GPS global positioning system
  • acceleration sensor and / or at least one rotation rate sensor e.g. gyroscope
  • the overpressure in the overpressure range can even be reduced to essentially 0 mbar and nevertheless the separation function and / or a sufficient pressure difference at the separation element of the respective separation device can be maintained by means of the negative pressure.
  • the manually adjustable and / or interchangeable adjustment device can expediently on a z.
  • B. fixed-predefined setting can be preset.
  • the amount of air emerging from the seed lines can essentially be compensated for by the air supply of the air supply device.
  • a speed of the compressed air flow in the seed line of the respective singling device can be appropriately changed, preferably without the pressure difference having to be changed (e.g. impaired) and / or z. B. without a speed of the at least one compressed air generating device having to be changed.
  • the pressure difference at the separating element of the respective separating device can essentially be controlled by means of a speed of the at least one compressed air generating device.
  • the adjusting element and / or the at least one compressed air generating device and thus preferably a speed of the compressed air flow in the seed line of the respective separating device and / or a pressure difference at the separating element of the respective separating device can, for. B. be set as a function of one or more control parameters (z. B. by means of a control device).
  • the at least one control parameter can also, for. B. include at least one of the following: a seed variety (e.g. information on the type of seed, shape, size and / or weight (e.g. thousand grain weight) of the seed, in particular the seed grains, etc.), a sowing depth of the seed, arable soil conditions (e.g.
  • an input device e.g. an operating device, a control panel, a display device, a touchscreen, a keyboard, an input field, an app, an interface (e.g. a user interface, a digital interface and / or a Data interface) and / or a mobile terminal device) is made available, by means of which an operator can provide information on the seed variety (e.g. seed type, shape, size and / or weight of the seed (e.g. thousand grain weight), in particular the seed grains, etc. ) and / or can expediently enter the at least one control parameter manually, which can apply in particular to the control parameters known to the operator or which can be determined himself, such as, for. B. seed type, sowing depth of the seed, arable soil conditions (e.g. moisture, creditworthiness, soil type, etc.) and / or whether or not a catching device is used to slow down the seed output from the seed line.
  • seed variety e.g. seed type, shape, size and / or weight of the seed (e.g
  • z. B. a detection system (z. B. sensor system, vehicle assistance system and / or GPS etc.) for the automatic (expedient direct or indirect) detection of the at least one control parameter, the driving speed and / or Information on the seed variety (e.g. seed type, shape, size and / or weight of the seed, in particular the seed grains, etc.) must be made available.
  • the detection can expediently z. B. a detecting, but also z. B. comprise determining (e.g. calculating or deriving).
  • the detection system and / or the detection devices can be used to detect the driving speed, for. B. at least one radar sensor, a global positioning system (GPS), at least one acceleration sensor, at least one speed sensor and / or at least one rotation rate sensor (z. B. gyroscope).
  • GPS global positioning system
  • acceleration sensor at least one acceleration sensor
  • speed sensor at least one speed sensor
  • rotation rate sensor z. B. gyroscope
  • a speed of the compressed air flow in the seed line of the respective separating device can, for. B. depending on the driving speed and / or seed type-dependent (preferably by means of the adjusting element) can be changed, z. B. in order to be able to adapt a particularly essentially horizontal speed component (in particular exit speed component) of the seed dispensed from the seed line of the respective singling device to the driving speed, e.g. B. to a relative speed between in particular the essentially horizontal speed component (in particular exit
  • a speed of the compressed air flow in the seed line of the respective singling device is essentially independent of the pressure difference on the Isolation member of the respective isolation device and / or can be changed essentially independently of a speed of the at least one compressed air generating device.
  • the separating element of the respective separating device can be acted upon at the same time with a negative pressure and an overpressure, preferably from the at least one compressed air generating device.
  • the respective row unit carries a seed container for carrying seeds and preferably a coulter.
  • the seeds can e.g. B. Gravity-based from the Seed hopper are supplied.
  • the agricultural distributing machine can have a seed-on-demand system (e.g. nursing system).
  • the agricultural distributing machine prefferably has a compressed air generating structure with an inlet side and an outlet side.
  • isolated seeds are expediently outputted from the seed line of the respective isolation device with a speed component that is adapted or substantially matched to the speed of the agricultural distribution machine, in particular horizontal speed components, e.g. B. so that preferably a catching device for braking of the seed output from the seed line of the respective separating device is not required.
  • the respective row unit z. B. is provided without an interception device or with an interception device, but which is mounted in a position in which it is not in contact with the ground and / or is deactivated.
  • the agricultural distributing machine may include a singulating system as disclosed herein.
  • an agricultural distributing machine that can be controlled in a section-dependent manner, in particular, can also comprise at least two separating systems as disclosed herein.
  • the suction side of the first compressed air generating device can be connected to a first air supply device (preferably comprising an adjusting element for changing the air supply) for an expedient direct or indirect supply of air from the atmosphere.
  • a first air supply device preferably comprising an adjusting element for changing the air supply
  • a second air supply device preferably comprising an adjusting element for changing the air supply
  • the separation devices of the first section can, for. B. be assigned to a first pivotable (in particular left) frame structure, wherein the separation devices of the second section can be assigned to a second pivotable (in particular right) frame structure.
  • the first section can e.g. B. comprise a first isolation system, which can expediently be designed as disclosed herein.
  • the second section can e.g. B. comprise a second isolation system, which can expediently be designed as disclosed herein.
  • It can e.g. B. a display device (z. B. a display etc.) can be made available to an operator pressure values of the respective separating device (z. B. a negative pressure in the negative pressure area, an overpressure in the overpressure area and / or a pressure difference at the separating element of the respective separating device ) and / or to display speed values of the compressed air flow and / or of the seed in the seed line of the respective singling device.
  • the agricultural distributing machine preferably comprises a plurality of row units and / or a plurality of separating devices with seed lines, so that the disclosure herein in relation to a respective row unit and / or a respective separating device also applies to a plurality of row units and / or a plurality of separating devices Can be found.
  • the separation organs divide the respective separation devices into negative and positive pressure areas and the negative pressure areas are connected to the suction side by means of a suction line system and the overpressure areas are connected to the pressure side by means of an overpressure line system to the separation elements of the respective separation devices at the same time to apply a negative pressure and an overpressure.
  • the at least one compressed air generating device z. B. comprises two fans, so that one of the fans can have the suction side and one of the fans can have the pressure side.
  • the at least one compressed air generating device can preferably be connected to the respective separating device, e.g. B. to apply positive pressure and / or negative pressure to the separating element of the respective separating device, preferably at the same time.
  • the speed of the compressed air flow in the seed line of the respective singling device is infinitely variable z. B. can be changed by means of the adjusting element, preferably during operation of the agricultural distributing machine. If z. B. the driving speed, the speed of the compressed air flow can also be increased. Slows down e.g. B. the driving speed, the speed of the compressed air flow can also be slowed down.
  • the speed of the compressed air flow in the seed line of the respective singling device depends on the threshold z. B. by means of the adjusting element is changeable, preferably during the operation of the agricultural distributing machine. If the driving speed moves z. B. in a range of 10 km / h to 15 km / h, the speed of the compressed air flow can remain unchanged. If the driving speed increases z. B. over 15 km / h, the speed of the compressed air flow can be increased. If the driving speed slows down z. B. below 10 km / h, the speed of the compressed air flow can be slowed down.
  • the control device can, for. B. have control functions.
  • the invention also relates to an operating method for operating an agricultural distributing machine, preferably an agricultural distributing machine as disclosed herein.
  • Figure 2 shows a part of an agricultural distribution machine according to an embodiment of the invention
  • FIG. 3 shows an enlarged detailed view of FIG. 2
  • FIG. 10 shows an enlarged detailed view of FIG. 9, and FIG. 11 shows an exemplary fan characteristic curve at a constant speed for an agricultural distributing machine according to an embodiment of the invention.
  • the agricultural distribution machine 500 comprises a plurality of row units 200 (e.g. FIGS. 9 and 10), e.g. B. at least 6, at least 8, at least 12, at least 14, at least 16, at least 18 or even at least 20 row units 200.
  • the row units 200 each carry a singling device 10 having a seed line 2.
  • the row units 200 can furthermore preferably each have a catching device 60 (in particular a catching roller, e.g. FIGS. 6 and 7) for braking the seed dispensed from the seed line 2 of the respective singling device 10 and e.g. B. a seed furrow closing device (z. B. pressure roller) for closing the seed furrow following the placement of the separated seeds in the seed furrow.
  • a catching device 60 in particular a catching roller, e.g. FIGS. 6 and 7
  • a seed furrow closing device z. B. pressure roller
  • the interception devices 60 are used in particular to increase the seed placement quality and prevent z. B. excessive rolling or jumping of given seeds.
  • the respective separating device 10 comprises a separating housing 11 with a rotatable separating element 1 designed as a perforated disk for separating seeds by means of a pressure difference.
  • the respective separating device 10 is connected to a seed line 2 for transporting separated seeds to the arable land. Individual seeds are transported in the seed line 2 by means of a compressed air flow X, so that the seed can be transported to the arable soil more quickly than in free fall and / or in relation to transport based purely on gravity.
  • the separating element 1 comprises a plurality of holding holes 1.1 for the pressure difference-based separation and transport of the seed to a seed delivery area 42 for delivering isolated seeds into the seed line 2.
  • the seed delivery area 42 can preferably be opposite a pressure difference interruption device UE (e.g. a ( preferably chamber-shaped) sealing construction, a roller, a sealing element, etc.) can be arranged.
  • the pressure difference interruption device UE can in particular interrupt the pressure difference that holds the seed on the separating element 1, so that the seed can detach from the separating element 1 and be released directly or indirectly into the seed line 2.
  • the reference symbols 44 represent sealing elements (e.g. sealing lips, etc.).
  • a seed supply 41 is used to supply seeds to the separating device 10.
  • the seed supply 41 can, for. B. be fed by a seed container 40 carried and carried along by means of the row unit 200, preferably purely based on gravity (for example shown schematically in FIG. 6).
  • the seed supply 41 can, however, optionally be fed by a seed tank 50 of a seed-on-demand system (SOD system, also called “nursing system”) (e.g. FIG. 2).
  • SOD system also called “nursing system”
  • a special feature is z. B. that a speed of the compressed air flow X in the seed line 2 of the respective singling device 10, in particular as a function of a driving speed V of the agricultural distributing machine 500 (z. B. Figures 6 and 7) and preferably seed type-dependent (e.g. seed type, shape, size and / or weight of the seed (e.g. thousand grain weight), in particular the seed grains, etc.) can be changed, preferably preset or controlled by means of a control device.
  • seed type-dependent e.g. seed type, shape, size and / or weight of the seed (e.g. thousand grain weight), in particular the seed grains, etc.
  • a special feature is z. B. also that the separating element 1 divides the separating device 10 into a negative pressure area 3 (e.g. negative pressure chamber) and an overpressure region 4 (e.g. positive pressure chamber) and the negative pressure region 3 is connected to the suction side 101 by means of a suction line system 5 and the overpressure area 4 is connected to the pressure side 102 by means of an overpressure line system 6, so that the separating element 1 (e.g. depending on the driving speed) simultaneously with a negative pressure (p-) and a overpressure (p +) made available by the overpressure line system 6 can be applied.
  • a negative pressure area 3 e.g. negative pressure chamber
  • an overpressure region 4 e.g. positive pressure chamber
  • the separating device 10 can be operated as a hybrid, the separating element 1 being able to be acted upon actively with positive pressure on the one hand and actively with negative pressure on the other.
  • the compressed air flow X in particular its speed, can thus, for. B. be set independently of the separation function of the separation device 10, in particular without affecting the pressure difference applied to the separation element 1 for separation.
  • the overpressure in the overpressure area 4 can even be reduced to essentially 0 mbar and, nevertheless, by means of the underpressure in the underpressure area 3, a sufficient differential pressure for separation can be maintained.
  • the hybrid concept can be used in different ways.
  • the respective separating device 10 is connected to the at least one compressed air generating device 100 via a ring line system comprising the suction line system 5 and the overpressure line system 6.
  • the at least one compressed air generating device 100 thus acts on a plurality of ring line systems, in particular connected in parallel, preferably simultaneously with overpressure and underpressure.
  • the suction side 101 and in particular the suction line system 5 is connected to an air supply device 20 for supplying air from the atmosphere A.
  • the controllable adjusting valve can, for. B. be controlled during operation of the distributor 500 to change the air supply, in particular in order to be able to adapt a speed of the compressed air flow X to a driving speed V, if necessary.
  • the manually adjustable or exchangeable adjustment device can expediently fix the air supply to a setting that is predefined and therefore unchangeable for the operation of the agricultural distributing machine 500.
  • An amount of air sucked in via the air supply device 20 corresponds essentially to an amount of air exiting from the seed line 2 of the respective singling device 10 by means of the compressed air flow X.
  • An amount of air guided out of the respective separating device 10 by means of the suction line system 5 essentially corresponds to one by means of the overpressure line system 6 into the respective separating device 10. Since leaks L cannot be completely avoided, leakage-dependent deviations in particular are possible in the context of the invention.
  • the overpressure can be changed in order to change the compressed air flow X, in particular its speed, without, however, affecting the pressure difference at the separating element 1, e.g. B. to lower it to too low a level.
  • the compressed air generating device 100 has a fan which comprises the suction side 101 and the pressure side 102.
  • a fan which comprises the suction side 101 and the pressure side 102.
  • two fans it is possible for two fans to be made available, one fan being the suction side 101 and the other fan the pressure side 102, whereby the available overpressure and underpressure in the underpressure area 3 and overpressure area 4 can be set flexibly and / or independently of one another.
  • the compressed air generating device 100 and thus in particular a pressure difference at the separating element 1 as well as the adjusting element 21 and thus in particular a speed of the compressed air flow X can be changed as a function of at least one control parameter.
  • An important control parameter is e.g. B. a driving speed V of the agricultural distributor 500. So it is z. B. possible to set a speed of the compressed air generating device 100 and / or the adjusting element 21 depending on the driving speed.
  • the exit speed of the separated seeds in the first operating mode is adapted to the driving speed V of the agricultural distributor 500 that braking by means of a respective catching device 60 is not necessary and the respective catching device 60 is present in the first operating mode, but can be deactivated, e.g. B. in a position in which it is not in contact with the ground. It is also z. B. possible that the respective row unit 200 is made available without interception devices 60 in the first operating mode.
  • a control parameter can thus e.g. B. include different travel speeds of a row unit 200 on the inside of the curve and a row unit 200 on the outside of the curve while the agricultural distributor 500 is cornering. It is possible here for an average speed of the compressed air flow X to be determined, which ensures a satisfactory distribution of both the row units 200 on the outside of the curve and the row units 200 on the inside of the curve. However, it is also possible that the
  • Compressed air generating device 100 z. B. can comprise several fans and / or several adjusting elements 21 are provided in order to be able to provide a not only satisfactory but also an optimal speed of the compressed air flow X for the row units 200 on the outside of the curve and for row units 200 on the inside of the curve.
  • the agricultural distribution machine 500 can, for. B. have at least two detection devices (z. B. sensors) for detecting a driving speed of a row unit 200 on the inside of the curve and a row unit 200 on the outside of the curve in order to detect their different driving speeds when cornering.
  • the control parameter can alternatively or additionally include: a sowing depth of the seed, in particular in a seed furrow, soil conditions (e.g. creditworthiness, moisture, type, etc.) and / or whether a catching device 60 (e.g. FIGS. 6 and 7) for Braking is used or not used from the seed line 2 dispensed individual seeds.
  • An input device can be made available by means of which an operator can input one or more control parameters manually.
  • a detection system for the automatic detection of one or more control parameters e.g. changing driving speed, moisture meter, etc.
  • control parameters e.g. changing driving speed, moisture meter, etc.
  • FIG. 2 shows part of an agricultural distributing machine 500
  • FIG. 3 shows an enlarged detailed view of FIG. 2
  • FIG. 4 shows another view of the agricultural distributing machine 500
  • FIG. 5 shows a perspective view in particular of a separating device 10
  • FIG. 6 shows a side view in particular of the separating device from FIG. 5
  • FIG. 7 shows an enlarged detailed view of FIG.
  • FIG. 8 shows a schematic sectional view of a separating device 10, which, however, is somewhat modified compared to the separating device 10 shown in FIG.
  • the agricultural distributing machine 500 is described below with common reference to FIGS. 2 to 8.
  • the overpressure line system 6 forms a first compressed air supply Dl into the overpressure area 4 in order to contribute to the pressure difference at the separating element 1 of the respective separating device 10.
  • the compressed air flow X can be generated by a compressed air supply D2 which is independent of the overpressure in the overpressure area 4, in particular a separate one.
  • the seed line 2 comprises an inlet area KE for the inlet of isolated seeds, the inlet area KE being formed in a jacket surface of the seed line 2, specifically in a radially outer partial area of a curved section of the seed line 2.
  • the compressed air required for the compressed air flow X is thus made available essentially exclusively by the second compressed air supply D2.
  • the seed line 2 preferably has an output setting angle a of less than 30 ° relative to a horizontal arable soil, so that, for. B. issued seeds can be deposited at a preferably acute angle and relatively flat on the soil (z. B. seed furrow).
  • the speed of the compressed air flow in the seed line of the respective singling device is infinitely variable z.
  • B. is controllable by means of the adjusting element 21, preferably during the operation of the agricultural distributor 500.
  • B. the driving speed V the speed of the compressed air flow X can also be increased.
  • Slows down e.g. B. the driving speed V, the speed of the compressed air flow can also be slowed down.
  • the speed of the compressed air flow X in the seed line 2 of the respective singling device 10 can in particular be changed in a threshold-dependent or stepless manner by means of the adjusting element 21, preferably when the agricultural distributing machine 500 is operated by means of a control device.
  • the speed of the compressed air flow X z. B. remain essentially unchanged. However, if the driving speed V increases z. B. over 15 km / h, the speed of the compressed air flow X can be increased. If the driving speed V z slows down. B. below 10 km / h, the speed of the compressed air flow X can be slowed down.
  • the speed of the compressed air flow X can be changed continuously with the travel speed V, which can also be implemented by a corresponding control of the adjusting element 21 by means of a control device.
  • the speed of the compressed air flow X can also be set to an unchangeable value predefined for the operation of the agricultural distributing machine 500, preferably likewise by means of the adjusting element 21.
  • One or more sensors 30 can be provided for detecting a speed of the compressed air flow X in or downstream of the seed line 2 and / or for detecting a speed of the seed in or downstream of the seed line 2.
  • the sensors 30 are expediently positioned at the end of the seed line.
  • FIG. 6 shows, very schematically, a seed container 40 carried by means of a row unit 200, which is used to carry seeds and has a seed feed 41 in order to be able to feed the seed to the respective singling device 10.
  • FIG. 9 shows an agricultural distributing machine 500, FIG. 10 showing an enlarged detailed view of FIG.
  • FIG. 2 ff Shows only two examples
  • Isolation devices 10 preferred agricultural distributing machines 500 z. B. at least 6, at least 8, at least 12, at least 14, at least 16, at least 18 or even at least 20 separating devices 10, all of which as in Figure 2 ff shown can be acted upon by a common compressed air generating device 100.
  • a first isolation system can, for. B. comprise at least 2, at least 3, at least 4 or at least 6 separating devices 10, which are acted upon by a first compressed air generating device 100 with overpressure and underpressure.
  • a second isolation system can, for. B. at least 2, at least 3, at least 4 or at least 6 separating devices 10, which are acted upon by a second compressed air generating device 100 with overpressure and negative pressure.
  • Compressed air generating device 100 each having a suction side 101 and a pressure side 102 are provided.
  • the isolation devices 10 of the first section S1 are preferably connected to the first compressed air generation device 100 by means of first ring line systems and the isolation devices 10 of the second section S2 are preferably connected to the second compressed air generation device 100 by means of second ring line systems.
  • the suction side 101 of the first compressed air generating device 100 is connected to a first air supply device 20, preferably comprising an adjusting element 21 for changing the air supply, for supplying air from the atmosphere A
  • the suction side 101 of the second compressed air generating device 100 with a second, preferably an adjusting element 21 for changing the air supply comprising air supply device 20 for supplying air from the atmosphere A is in connection.
  • the separating devices 10 of the first section S1 and the separating devices 10 of the second section S2 can be operated independently of one another, e.g. B. can be operated with different pressure differences. Also z. B. the seed lines 2 of the first section S1 and the seed lines 2 of the second section S2 are operated with compressed air flows X having different speeds.
  • the separating devices 10 of the first section S1 are assigned to a first preferably pivotable frame structure F1 and the separating devices 10 of the second section S2 are assigned to a second preferably pivotable frame structure F2.
  • Reference number 400 denotes a tractor (e.g. tractor) for pulling the agricultural distributing machine 500.
  • FIG. 11 shows an exemplary characteristic curve (in particular pressure difference) of a compressed air generating device 100 (e.g. fan, in particular radial or centrifugal fan) at a constant speed for an agricultural distributing machine 500 according to an embodiment of the invention.
  • a compressed air generating device 100 e.g. fan, in particular radial or centrifugal fan
  • FIG. 11 shows e.g. B .:
  • volume flow 0 m3 / min - Dr: 39.8 mbar Volume flow: 27.6 m3 / min - Dr: 39.3 mbar Volume flow: 39.7 m3 / min - Dr: 39.8 mbar Volume flow: 57.8 m3 / min - Dr: 28.4 mbar Volume flow: 74.2 m3 / min - Dr: 10.5 mbar Volume flow: 79.4 m3 / min - Dr: 2.5 mbar It can be seen that despite different volume flows (in particular air quantities), a pressure difference can be kept essentially constant, which in the exemplary illustration applies in particular to volume flows between approximately 0 to approximately 40 m3 / min.
  • the pressure difference at the separating element 1 of the respective separating device 10 can be kept essentially constant and the speed of the compressed air flows X (in particular shot speed) can be regulated, preferably without having to change the fan speed.
  • a differential pressure at the separating element 1 of the respective separating device 10 is expediently greater than a differential pressure between an inlet and an outlet of the seed line 10 of the respective separating device 10.
  • sealing element e.g. B. sealing lips
  • 50 seed tank preferably central seed tank and / or SOD seed tank
  • Vv vertical speed component in particular vertical seed outlet speed component Vg total speed component, in particular seed total outlet

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  • Environmental Sciences (AREA)
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Abstract

L'invention concerne une machine de distribution agricole (500), de préférence pour l'ensemencement individuel, comprenant : au moins un dispositif de génération d'air comprimé (100) qui a un côté aspiration (101) et un côté pression (102) ; et une pluralité de rayonneurs (200). Chaque rayonneur (200) comprend un dispositif de séparation (10) ayant un élément de séparation rotatif (1) pour séparer des semences au moyen d'une différence de pression. Chaque dispositif de séparation (10) est relié à un conduit de semences (2) destiné à transporter des semences individuelles vers le sol au moyen d'un écoulement d'air comprimé (X). La machine de distribution agricole (500) est caractérisée en particulier en ce que la vitesse de l'écoulement d'air comprimé (X) dans le conduit de semences (2) de chaque dispositif de séparation (10) peut être modifiée, de préférence commandée et/ou prédéfinie, en fonction de la vitesse d'entraînement (V) de la machine de distribution agricole (500) et/ou en fonction du type de semence. L'invention concerne en outre un procédé associé.
PCT/EP2020/078291 2019-10-11 2020-10-08 Machine de distribution agricole dont la vitesse d'écoulement d'air comprimé peut être modifiée en fonction de la vitesse d'entraînement et/ou en fonction du type de semence WO2021069599A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019127469.9 2019-10-11
DE102019127469.9A DE102019127469A1 (de) 2019-10-11 2019-10-11 Landwirtschaftliche Verteilmaschine mit Fahrgeschwindigkeits- und/oder Saatgutsorten-abhängig veränderbarer Druckluftströmungsgeschwindigkeit

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WO2021069599A1 true WO2021069599A1 (fr) 2021-04-15

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GB202114710D0 (en) 2021-10-14 2021-12-01 Prec Planting Llc Seed accelerator
WO2023062463A1 (fr) 2021-10-11 2023-04-20 Precision Planting Llc Accélérateur de graines
WO2024105475A1 (fr) 2022-11-15 2024-05-23 Precision Planting Llc Unité de rangs

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WO2024052795A1 (fr) * 2022-09-09 2024-03-14 Precision Planting Llc Système de distribution de semences
DE102023101911A1 (de) * 2023-01-26 2024-08-01 Amazonen-Werke H. Dreyer SE & Co. KG Sämaschine und Verfahren zur orientierten Aussaat von Saatgutkörnern mit einer Sämaschine

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WO2010059101A1 (fr) 2008-11-18 2010-05-27 Väderstad-Verken Ab Configuration d'un dispositif de dosage de semences sur une machine agricole
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DE202018006221U1 (de) 2018-07-10 2019-08-21 Horsch Maschinen Gmbh Vereinzelungsvorrichtung zur Druckdifferenz-basierten Vereinzelung von Körnern und landwirtschaftliche Reiheneinheit

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WO2010059101A1 (fr) 2008-11-18 2010-05-27 Väderstad-Verken Ab Configuration d'un dispositif de dosage de semences sur une machine agricole
WO2011056138A1 (fr) * 2009-11-05 2011-05-12 Väderstad-Verken Ab Agencement de recyclage de l'air dans une machine agricole
WO2013180619A1 (fr) * 2012-05-31 2013-12-05 Väderstad-Verken Ab Outil agricole et procédé d'alimentation en matière granulaire
US20140182495A1 (en) * 2013-01-02 2014-07-03 Cnh America Llc Seed Delivery System
WO2019092649A1 (fr) * 2017-11-10 2019-05-16 Maschio Gaspardo S.P.A. Semoir de précision pneumatique et son procédé de régulation
DE202018006221U1 (de) 2018-07-10 2019-08-21 Horsch Maschinen Gmbh Vereinzelungsvorrichtung zur Druckdifferenz-basierten Vereinzelung von Körnern und landwirtschaftliche Reiheneinheit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023062463A1 (fr) 2021-10-11 2023-04-20 Precision Planting Llc Accélérateur de graines
GB202114710D0 (en) 2021-10-14 2021-12-01 Prec Planting Llc Seed accelerator
WO2024105475A1 (fr) 2022-11-15 2024-05-23 Precision Planting Llc Unité de rangs

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