• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This document relates to a method and an apparatus for feeding granular material into an agricultural implement and to an agricultural implement with such an apparatus. The method comprises providing a capture zone. (102), the extent of which, seen in a horizontal plane, is defined by a roof (1022, 1026) above the receiving zone, to provide downwardly extending side walls (1023, 1027), so that a downwardly open space and towards the outlet (102b) (S ) is formed between the roof (1022, 1026) and the side walls (1023, 1027), to provide an air flow (F) through the acquisition zone (102) towards an outlet (102b) from the acquisition zone, to feed the material (M) by gravity to the receiving zone (102), so that the material collapses in a direction transverse to the air flow (F) into the receiving zone (102) and thereby delimits the space (S) downwards, to provide a part adjustable between at least two positions (1022, 1025), and that by means of the adjustable part (1022, 1025) regulate a flow velocity of the air flow (F) in a space between the material (M) and the roof (1022, 1026). Publication image: fig 1
    公开号:SE1451334A1
    申请号:SE1451334
    申请日:2014-11-07
    公开日:2016-05-08
    发明作者:Gert Gilstring
    申请人:Väderstad Holding Ab；
    IPC主号:
    专利说明:

    TECHNICAL FIELD This document relates to a method and a device for feeding degranular material by means of an air flow and to an agricultural implement comprising such a device. איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך איך The method and the device are applicable when feeding the material from a main container to one or more dispensing units, which are provided with a respective buffer or other flow equalizing device.
    Specific applications include so-called "nursing systems" for distributing granular material in an agricultural implement, such as a seed drill, a precision seed drill, a fertilizer spreader or a pesticide spreader, and in particular for those with air pressure assisted feeding of the granular material.
    Background It is known to provide seeding machines in which a central seed hopper is arranged to feed seed to a plurality of row units, each of which comprises a dosing device for controlling the amount of seed discharged to provide a predetermined mutual distance between the respective rowing plants.
    WO2013180619A1 discloses a system in which granular material is fed from a central container to a plurality of row units, each of which has a buffer and a dosing device.
    US6609468B1 discloses a system in which material is fed from a central container to a plurality of row units by means of an air flow, and in which the flow of exhaust air and material is reduced or throttled when sufficient level of material is reached in the buffer of the row unit.
    There is a need for an improved feeding device for feeding granular material from a main container to a dispensing unit. In general, there is a need for such a feeding device that is reliable and easy to use. Specifically, there is a need for a feeding device that is easy to adjust between feeding different types of granular material.
    Summary An object is thus to provide an improved feeding method and an improved feeding device. Specific objects include providing a feeding method and a feeding device which meet the above needs.
    The invention is defined by the appended independent claims. Embodiments appear from the dependent claims, from the following description and from the drawings.
    According to a first aspect, a method of feeding degranular material into an agricultural implement is provided. The method comprises providing a receiving zone, the extent of which seen in a horizontal plane is defined by a roof above the receiving zone, to provide side walls projecting from the roof, so that a downward and downward opening space (S) is formed between the roof and the side wall walls, through the acquisition zone in the direction of an outlet from the acquisition zone, to feed the material by means of gravity to the acquisition zone, so that the material collapses in a direction transverse to the air flow into the acquisition zone and thus delimits the space (S) downwards, to provide an adjustable part between at least two positions, and using the adjustable part regulate a flow rate of the air flow in the space. '' joint '' uptake zone '' means an area in which the granular material meets and is taken up by an air flow.
    The side walls and the roof can form separate parts. For example, the edge roof be downwardly concave, so that the lower edge portions of the roof form the side walls.
    Due to the angle of collapse that occurs when the material collapses into the intake zone, the space of the roof, the side walls and the material defined will be slightly larger than the space that would be defined by the roof and the side walls alone.
    By using an adjustable part to regulate a flow rate, a simple way of regulating the introduction and transport of granular material in an air flow is achieved. Thus, the flow rate can be reduced for easily absorbed material, such as rapeseed and sorghum, as well as increased for more heavy absorbed material, such as corn and soybeans.
    It will be appreciated that when granular material is fed to the acquisition zone, the flow area of the acquisition zone will be reduced, the flow rate being practically regulated in a space between the material acquisition zone and the roof.
    The adjustable part can be, for example, rotatable or displaceable relative to the receiving zone.
    The side walls, which extend downwards from the roof, determine a maximum level for the material in the acquisition zone. As material continues to collapse inside the acquisition zone, a material level in the acquisition zone will be pouring constant.
    As the material flows or collapses by means of gravity into the receiving zone, a lower edge of the side wall will form an upper edge of a material inlet to the receiving zone, the highest level of material in the receiving zone being determined by the lower edge side position and in practice the race angle formed inside the lower edge.
    The method may further comprise, with the aid of the adjustable part, regulating a flow area for the air flow in the space between the roof, the side walls and the material.
    The method may further comprise, by means of the adjustable part guide, a flow area for a bypass flow, so that a part of this is guided past the space between the roof, the side walls and the material. The side walls and roof can here form an integral part.
    By bypassing part of the flow past the space, the flow rate in the space can be reduced. By closing the bypass duct instead, the flow rate in the space can be increased. The bypass also has the advantage that a high velocity air flow is achieved at the outlet, which can help to provide additional driving force to the exhaust air taken up material _ Alternatively, or as a complement, the method may include the adjustable part controls a height position of the side walls. By lowering the side walls towards the bottom, the material level in the catchment zone will decrease and thus the flow area will increase, which will lower the velocity flow rate in the space between the roof, the side walls and the material.
    The method may also comprise creating a feed zone adjacent to the take-up zone, the material being fed by gravity to the feed zone and allowed to flow or collapse the take-up zone in a direction transverse to the air flow.
    The method may also comprise feeding material-mixed air flow from the outlet to a row unit comprising a material buffer and at least one discharge device for feeding the material towards ground to which the material shell is discharged.
    The method may further comprise feeding the material mixed air stream to the material buffer until it is full and causing the feed to cease when a predetermined material level is reached in the material buffer. The loading can be stopped either by using a system in which the air flow is restricted or reduced by the material itself when a predetermined level is reached in the buffer. Alternatively, a valve can regulate the flow based on a signal from a material level sensor.
    According to a second aspect, a device for feeding degranular material to an air flow in an agricultural implement is provided. The device comprises a roof defining the extent of a catchment zone seen in a horizontal plane, an outlet material mixed with the catchment zone pre-mixed air flow, side walls, arranged on respective sides of the catchment zone, so that the roof and side walls define a downward and counter outlet in which the material is open. a horizontal direction across an air flow direction (F) in the space, and which has an upper edge, below which the material can collapse into the receiving zone, and a part adjustable between at least two positions, to regulate the flow rate of the air flow in the receiving zone.
    Lower portions of the side walls may form said upper edge. In the device, the adjustable part may comprise the roof.
    The roof can be displaceable between a first position, where the receiving zone has a flow area which is at least as large as a single flow area of the outlet and a second position, where the roof is at the level of the upper edge.
    The device may further comprise a bypass duct, which connects incoming air flow directly to the air outlet.
    The adjustable part may comprise a damper, which is arranged to regulate an air flow in the bypass duct.
    Alternatively, or as a complement, the adjustable part may comprise at least one of the side walls.
    The roof can, seen in a cross section perpendicular to the air flow, have a substantially concave cross-section, so that the roof has a lowest portion and a highest portion, the lowest portion defining a highest level of the material and space extending at least between the highest level and the highest portion of the roof.
    A bottom surface of the receiving zone may form a common bottom surface with a feed zone, which is upright open to a material container.
    According to a third aspect, an agricultural implement comprising a single device is provided as described above.
    The agricultural implement may further comprise at least one row unit comprising a material buffer and at least one discharge device for feeding the material towards the ground to which the material is to be discharged.
    The material buffer may have a material separator, for separating the material from the air flow transporting the material, so that when a predetermined material level is reached in the material buffer, the material separator blocks so that the material mixed air flow to the row unit ceases or is reduced.
    Brief Description of the Drawings Fig. 1 is a schematic perspective view of a device for discharging granular material.
    Fig. 2 is a schematic perspective view of a device for discharging granular material seen from a different perspective than in Fig. 1.
    Fig. 3 shows a cross section of a device for discharging granular material.
    Figures 4a-4d show different cross-sections of an embodiment of a device pre-feeding granular material.
    Figures 5a-5d show cross-sections of a further embodiment of a device for discharging granular material.
    Detailed Description Fig. 1 shows a schematic cross-sectional view of a system 10 for feeding granular material. A central container 101 is connected to a dispensing device 100 which has a receiving zone 102 and a material inlet 103. The receiving zone 102 has an air supply zone 102a which is open to a supply duct 104 for air flow (F) common to at least two receiving zones and an outlet 102b for mixed air flow.
    From the outlet 102b a channel 106 goes to a row unit 107 comprising a buffer space 1071, a singulating device 1072 which is arranged to receive material from the buffer space 1071 and feed it at a predetermined rate to a sieve 1073, with which the material is lowered into the ground 0.
    The row unit 107 may, for example, be of the type shown in WO2013180619A1.
    Granular material is filled, for example, into the container 101 by feeding from a magazine or from sacks. Filling of granular material can also be done under gangs.
    An air flow is established in a conventional manner by means of a fan, which can be hydraulically or electrically driven. The lateral influence in the container 101 mainly causes the underactivity of gravity via the material inlet 103 to the receiving zone 102. The air flow F is fed from the supply duct 104 via the air supply zone 102a to the receiving zone 102, where the material is taken up in the air flow F and carried therein by a material F + 1 / I via the outlet 102b and the channel 106 to the row unit 107.
    Fig. 2 shows a perspective view of the distribution device 100 in Fig. 1, seen from above. The air flow into the supply duct 104 is provided through a single opening 104a, while the supply duct 104 is closed on the other side through delimiting wall 104b. Since the air flow cannot continue the feed channel 104, the flow F passes through the receiving area 102 and through a number of outlets 105. Fig. 2 shows the material inlet 103, which is open upwards towards the container 101 (Fig. 1) and twelve outlets 105, which are associated with a respective receiving zone.
    Fig. 3 shows a perspective view in section of the distribution device 100 in Fig. 2. Fig. 3 shows the material inlet 103, the receiving zone 102, the air supply duct 104 and the outlet 105.
    Figs. 4a-4d show sectional views of an embodiment of a device pre-feeding granular material, where Fig. 4a shows the device seen from the side, Fig. 4b shows the device seen from above (section BB in Fig. 4a) and Figs. 4c and 4 show the device seen from the air flow zone 102 of the acquisition zone 102. (section CC in Fig. 4a). Fig. 4b shows two devices arranged side by side in a common feeding space 103. The loading device in Figs. 4a-4d comprises a receiving zone 102 having a bottom surface 1021, a roof 1022 and a pair of side walls 1023. The receiving zone extends in a longitudinal direction, substantially straight the mid-air inflow zone 102a and the air outlet 102b and thus parallel to the mean air flow.
    The acquisition zone has a material inlet 102c, which is open in the one-horizontal direction, transverse to the longitudinal direction. The lateral inlet may extend between the bottom surface and the lower portion 1023 of the side wall 1023 ”.
    The roof 1022 extends along the entire receiving zone and is adjustable in height. The roof may have an upwardly facing roof surface 10221 which, seen in cross-section in the transverse longitudinal direction, is upwardly convex, so that material which ends up on the roof surface slides from this side towards the feed zones 109. Preferably has a roof-tight cross-section with upwardly directed roof axis
    The roof can furthermore have a downwardly facing surface 10222, which, seen in cross section, in the transverse longitudinal direction, is flat or downwardly concave or downwardly convex.
    The side walls 1023 extend from above and down towards the bottom surface 1021, but terminate at a distance from the bottom surface, so that material fed from the material inlet 103 to the feed zones 109 can flow from the side into the counter-receiving zone 102 (see arrows 1 / I in Figs. 4c, 4d).
    Thereby a space S (Fig. 4c) is formed above the material, the intermediate side walls 1023 and under the roof 1022, through which space the air flow passes.
    Because the roof is movable in the vertical direction, the flow area of the hose space S can be changed, as shown in Figs. 4c and 4d. The roof is thus an adjustable part.
    When the roof is in its upper position (Fig. 4c), the flow rate will reach its lowest value, given a certain flow and pressure from an air source.
    When the roof is in its lower position (Fig. 4d), the flow rate will be higher than in Fig. 4c, which gives the capacity to draw with larger or heavier granules.
    The roof 1022 may be continuously adjustable, or adjustable in a plurality of steps. For example, the roof may be adjustable between an upper position, in which the flow area of the acquisition zone (space S) is at least as large as the flow area of the outlet 102b, and a lower position, in which the flow area of the acquisition zone is defined by the space S formed by the race angle formed by that the material collapses from the side into the opposite center of the receiving zone 102 and the lower surface 1022 of the roof 10222. In the lower position of the roof, its laterally outermost edges may thus be at the level of lower edges of the side walls 1023, or even slightly lower.
    The bottom surface 102 may be substantially planar, seen both in a direction parallel to the air flow F and perpendicular thereto.
    Upstream of the air inflow zone 102a, the bottom surface may be inclined toward the air inflow zone 102a, so that material falling into the material inlet 103 may not remain in the supply channel 104, even if overpressure should occur at the outlet 102b.
    Fig. 4b shows two pick-up zones 102 and three feed zones 109. The feed zones 109 are thus separated by the take-up zones 102. The take-up zones 102 of the two devices can be openly connected to the feed zones, i.e. they can together form a common pick-up area without any partitioning walls. Although there are no partition walls between the acquisition zones 102, the bottom surface, which constitutes the bottom surface 106 of a number of adjacent devices, can be designed in a manner that allows granular material to effectively pre-soak the respective acquisition zone 102.
    For example, the feed zones 109 may have an elevated portion midway between adjacent receiving zones, the bottom sloping from that elevated portion toward the respective receiving zone 102. Although only two devices are shown in Fig. 4b, a system of pre-feeding granular material in an agricultural implement may consist of two or more grains. devices depending on the number of outlets for hoses or pipes needed.
    In order to be able to regulate a number of adjustable parts, one and the same control can be connected to all included adjustable parts, which provides synchronized control. The control can be designed for manual operation or connected to an actuator.
    A user can, for example, make the desired settings through the use of actuators, such as a lever, steering wheel or the like, the piling farm implement, or by maneuvering via a control panel in a single-vehicle vehicle. Figs. 5a-5d show another embodiment, which largely corresponds to that shown in Figs. 4a-4d. In Figs. 5a-5d, however, there is no movable roof. Instead, a bypass duct 1024 is arranged parallel to and separated from the take-up zone 102, so that a part of the air flow F can flow past the take-up zone in the form of a by-pass flow Ff, without coming into contact with the material.
    Furthermore, in Figs. 5a-5d, the adjustable part is constituted by a damper 1025, which adjustably regulates the flow Ff in the bypass channel 1024. The receiving zone material inlet 102c, is open in a horizontal direction, across the longitudinal direction, the lateral inlet may extend between a bottom surface 106 and edge portion 1027 of the wall 1027 of the bypass channel forming the roof receiving zone 102.
    The bypass duct may have a lower wall, which in cross section the transverse longitudinal direction, is downwardly concave, so that a space S may be formed below the lower wall 1026, the space upward being limited by the underside of the lower wall and downward by the granular material and its angle of incidence towards the receiving zone 102. from the lower part of the lower wall 1027.
    In the presence of a bypass duct, roofs and side walls can be integrated with each other, for example designed in one piece.
    The bypass duct may have an upper wall which, seen in cross-section in the transverse longitudinal direction, is upwards convex, so that material ending up on this side slides off this side towards the feed zones 109. Preferably the upper side has a cross section with upwardly directed roof axis on which no material can accumulate.
    Like the roof 1022 shown in Figs. 4a-4d, the damper 1025 may be displaceable to control the relationship between bypassed air and air passing through the receiving zone 102.
    In order to be able to regulate a plurality of dampers 1025, one and the same control product can be connected to all included dampers, which provides a synchronized control. The control can be designed for manual operation or connected to an actuator. A stirrer 1011 may be provided in the central container 101. The stirrer may be a mechanical stirrer with, for example, wings or paddles which rotate to prevent the formation of material bridges in the container. Alternatively or as a complement, a stirrer can provide air flow in the container.
    According to a further embodiment, the side walls 1023 can be displaceable in height, so that the volume of the space S can be regulated by changing the material level in the receiving zone.
    It is possible to let the roof 1022 and / or the side walls 1023 perform an oscillating or shaking movement, for example upwards and downwards and / or sideways, in order to reduce the risk of material bridges arising. It will be appreciated that the bypass duct may have any cross-section, for example semicircular, rectangular or the like, and, if the underside of the roof has too little curvature to form a space S, be combined with flanges forming side walls.
    权利要求:
    Claims (19)
    [1]
    A method of feeding granular material in an agricultural implement, comprising: providing a catchment zone (102), the extent of which seen in a horizontal plane is defined by a roof (1022, 1026) above the catchment zone, providing a flow of air (F) through the catching zone (102) in the direction of an outlet (102b) from the receiving zone, to provide downwardly extending side walls (1023,1027) from the roof, so that a downwardly open space and towards the outlet (102b) forms between the roof (1022, 1026) and the side walls (1023). , 1027), to feed the material (l / l) by means of gravity to the acquisition zone (102), so that the material collapses in a direction transverse to the air flow (F) into the acquisition zone (102) and thereby delimits the space (S) downwards, that provide an adjustable part (1022, 1025) between at least two positions, and by means of the adjustable part (1022, 1025) regulate the flow rate of the air flow (F) in the space between the roof, the side walls and the material.
    [2]
    A method according to claim 1, further comprising regulating by means of the adjustable part a flow area for the air flow in the space.
    [3]
    A method according to claim 1, further comprising controlling by means of the adjustable part (1022, 1025) a flow area for a bypass flow (Ff), so that a part of it is led past the space.
    [4]
    A method according to claim 1, further comprising controlling a height position of the side walls by means of the adjustable part (1022, 1025).
    [5]
    A method according to any preceding claim, further comprising creating a feed zone (109) next to the take-up zone (102), the material being fed by gravity to the feed zone (109) and allowed to flow to the take-up zone (102) in a direction transverse to the air flow ( F).
    [6]
    A method according to any preceding claim, further comprising feeding material mixed air flow (F + M) from the outlet to a row unit (107) comprising a material buffer (1071) and at least one discharge device (1072, 1073) for feeding the material towards the ground to which the material shall be discharged.
    [7]
    The method of claim 6, further comprising feeding the material mixed air stream (F + M) to the material buffer (1071) until it is full and causing the feed to cease when a predetermined material level is reached in the material buffer (1071).
    [8]
    An apparatus (100) for feeding granular material to an air flow in an agricultural implement, comprising: a roof (1022, 1026) defining an extension zone (102) extending in a horizontal plane, an outlet (102b) associated with the acquisition zone (102) pre-material mixed air flow (F + 1 / l), side walls (1023), arranged on respective sides of the receiving zone (102), so that the roof and the side walls define a downwardly open space (S) towards the outlet (102b), an inlet (102c) for material, which is open in a horizontal direction transverse to an air flow direction (F) in the space, and which has an upper edge (1023 ", 1027), below which the material can collapse into the receiving zone (102), and a part adjustable between at least two positions ( 1022, 1025), to control the flow rate of the air flow (F) in the space (S) between the roof, the side walls and the material.
    [9]
    The device of claim 8, further comprising, wherein the lower portions of the side walls (1023) form said upper edge (1023 "). 14
    [10]
    Device according to claim 8 or 9, wherein the adjustable part comprises the roof (1022).
    [11]
    The device of claim 10, wherein the roof (1022) is slidable between a first position, wherein the receiving zone (102) has a flow area at least equal to a flow area of the outlet (102b) and a second position, where the roof is level with the upper edge (1023 ”).
    [12]
    A device according to any one of claims 8-11, further comprising a bypass duct (1024), which connects incoming air flow directly to the air outlet (102b).
    [13]
    Device according to claim 12, wherein the adjustable part comprises a damper (1025), which is arranged to regulate an air flow (Ff) in the bypass duct (1024).
    [14]
    A device according to any one of claims 8-13, wherein the adjustable part comprises at least one of the side walls.
    [15]
    Device according to any one of claims 8-14, wherein the roof (1022, 1026), seen in a cross section perpendicular to the air flow (F), has a substantially concave cross-section, so that the roof has a lowest portion and a highest portion, wherein the lowest portion defines a maximum level of the material and the space extends at least between the highest level and the highest part of the roof.
    [16]
    A device according to any one of claims 8-15, wherein a bottom surface (106) of the receiving zone (102) forms a common bottom surface with a feed zone (109), which is upwardly open towards a material container (101).
    [17]
    Agricultural implements comprising a device according to any one of claims 8-16.
    [18]
    An agricultural implement according to claim 17, further comprising at least one row unit (107) comprising a material buffer (1071) and at least one discharge device (1072, 1073) for feeding the material towards the ground (0) to which the material is to be fed.
    [19]
    An agricultural implement according to claim 18, wherein the material buffer has a material separator, for separating the material from the air flow transporting the material, so that when a predetermined material level is reached in the material buffer, the material separator is blocked so that the material mixture air flow is reduced to the row unit.
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    同族专利:
    公开号 | 公开日
    WO2016072922A1|2016-05-12|
    SE542446C2|2020-05-05|
    US10285324B2|2019-05-14|
    EP3214915A1|2017-09-13|
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    US20170318737A1|2017-11-09|
    CA2966481A1|2016-05-12|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1451334A|SE542446C2|2014-11-07|2014-11-07|Method and device for discharging granular material and agricultural implements comprising such a device|SE1451334A| SE542446C2|2014-11-07|2014-11-07|Method and device for discharging granular material and agricultural implements comprising such a device|
    CA2966481A| CA2966481A1|2014-11-07|2015-11-05|Method and device for dispensing granular material|
    PCT/SE2015/051172| WO2016072922A1|2014-11-07|2015-11-05|Method and device for dispensing granular material|
    US15/524,518| US10285324B2|2014-11-07|2015-11-05|Method and device for dispensing granular material|
    EP15820322.4A| EP3214915B1|2014-11-07|2015-11-05|Method and device for dispensing granular material|
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