Distributing system for an agricultural working device

Abstract

The present invention relates to a distributing system (10) for an agricultural working device for conveying at least two components in the form of granular solids to at least one dispensing unit (12, 42, 44), comprising a pneumatic conveying system (14) with at least one first conveying air section (20), wherein at least two metering units (16, 18) are provided, each of which is assigned at least one storage container (24, 26) for storing granular solids, wherein the first metering unit (16) is fluid-permeably connected at least to the first conveying air section (20). According to the invention, the first conveying air section (20) has at least one first admixing device (28), wherein the second metering unit (18) is fluid-permeably connected to the first admixing device (28), in particular releasably, via at least one connecting line (32).

Description

[0001] Distribution system for an agricultural implement

[0002] The present invention relates to a distribution system for an agricultural implement for spreading granular solids.

[0003] Granular solids, for example in the form of seed or fertilizer, are typically transported from a storage container to one or more discharge units by means of a conveyor system. Mechanical conveyor systems or, frequently, pneumatic conveyor systems are used for this purpose. These convey the granular solids by means of a blower via conveyor lines from the storage container, for example, through a distribution device and a plurality of lines connected thereto, to the respective discharge units. The amount of granular solids fed from the storage container into the conveyor system is controlled by a dosing device.

[0004] DE 10 2009 005 661 A1 discloses an agricultural pneumatic distribution machine for granular material. Using metering devices, granular solids are metered into a system with two conveyor lines and distributed via distributor heads. A distribution device is typically connected downstream of the metering device, allowing the seed to be selectively introduced into one or more lines of the conveyor system.

[0005] A distribution system for granular materials with different conveying lines is known from DE 10 2019 122 908 A1. The distribution system comprises at least one storage container and two devices, each with a dosing device and a receiving device arranged underneath with interchangeable, drawer-shaped inserts for distributing the dosed material into different conveying lines. The disadvantage here is that different inserts must be kept available for different applications. Furthermore, space is required not only for the tall dosing device and the respective line sections, but also that space must be kept free on the side for operating the drawer mechanism.

[0006] It is therefore the object of the present invention to provide a distribution system for an agricultural implement which enables reliable dosing of different components, in particular granular solids, and which, in addition to a reduced installation space requirement, has an improved use of installation space.

[0007] The object is achieved by a distribution system according to the features of claim 1. Advantageous embodiments of the invention are specified in the subclaims.

[0008] Distribution system for an agricultural implement for conveying at least two components in the form of granular solids to at least one dispensing unit, comprising a pneumatic conveying system with at least one first conveying air line, wherein at least one first and one second dosing unit are provided, each of which is assigned at least one storage container for storing granular solids, wherein the first dosing unit is fluidly connected at least to the first conveying air line. According to the invention, the first conveying air line has at least one first admixing device, wherein the second dosing unit is fluidly connected, in particular detachably, to the first admixing device via at least one connecting line. By means of a pneumatic conveying system, the components to be dispensed can be conveyed to the first dispensing unit by means of conveying air via a first conveying air line.The components in the form of granular solids can be, for example, seeds, microgranules, fertilizers, or slug pellets, which can be introduced into the soil and / or spread onto the soil by a dispensing unit. The conveying air stream can be pressurized with conveying air to transport the components or granular solids. The conveying air line can be designed in one or more parts, and in particular can also be integrated into components of the distribution system, such as the dosing unit through which the conveying air can be passed. The conveying air line can be at least partially rigid, for example in the form of a pipe, and / or flexible. The first dosing unit can introduce granular solids into at least the first conveying air line and transport them further to at least the first dispensing unit by the conveying air.

[0009] According to the invention, the first conveying air line has at least one first admixing device, via which a second component, in particular in the form of a granular solid, can be fed into the first conveying air line. A conveying air line can have several admixing devices, whereby a plurality of components can be introduced into the conveying air line. A admixing device can, for example, be Y-shaped, with two openings serving as inlet openings and one as outlet opening for a conveying air stream. The second component can be conveyed together with the first component of the first dosing unit to the at least first dispensing unit. The second component can be dosed by the second dosing unit and fed via a connecting line to the first admixing device or the first conveying air line.The second dosing unit and the connecting line can be supplied with conveying air by the conveying system to enable the second component to be conveyed from the second dosing unit at least to the first mixing device or the first conveying air stream. A fluid-permeable connection is understood to mean a connection that allows the conveying air stream to flow through, with or without components.

[0010] The connecting line can be detachably connected to the proportioning device or the first conveying air line. This has the advantage that the connecting line can be easily reconnected to a further proportioning device of the, in particular, first, conveying air line, if required. The proportioning device can be arranged in any area of ​​a conveying air line, thereby providing a high degree of flexibility for the addition of further components by the distribution system. By connecting the second dosing unit to the first conveying air line via the first proportioning device, the second dosing unit can be arranged at a distance or offset from the first dosing unit and the first conveying air line, while at the same time enabling reliable dosing of different components, in particular granular solids.Due to this flexible arrangement of the second dosing unit, it is not necessary to arrange the second dosing unit directly on the first conveying air line, so that the available installation space can be used more effectively and the required installation space in the area of ​​at least the first conveying air line can be reduced.

[0011] In a preferred embodiment of the distribution system, the mixing device is arranged in the conveying air line in a conveying line and / or, in particular on the inlet opening side and / or conveying opening side, on a dosing unit. A dosing unit can have, in the conveying direction, an inlet opening facing away from a discharge unit and a conveying opening facing the discharge unit. The mixing device can be arranged as a separate component in the conveying air line and / or the dosing unit and / or can be formed at least partially integrally with the conveying air line and / or the dosing unit. The mixing device can be substantially Y-shaped and have a main line connected to the conveying air line, in particular with two openings, as well as a mixing line. The mixing line can be arranged at an angle to the main conveying direction and / or the main line and can be designed to accommodate the connecting line.The proportioning device enables a cost-effective design of a distribution system with a flexible, space-saving arrangement of dosing units while simultaneously reliably dosing one or more components into a conveying air line.

[0012] In a preferred embodiment, the at least one connecting line is designed in the form of an at least partially flexible, in particular hose-like, line. The connecting line can have a substantially rigid section. This can, for example, be arranged on the delivery opening side of the, in particular the second, dosing unit. This has the advantage that larger sections can be designed to be self-supporting. A flexible section can be connected to a rigid section of the connecting line, or the connecting line can be designed entirely as a flexible line.A detachable, fluid-permeable connection, in particular of a flexible section, of the connecting line to a proportioning device enables simplified connection of the connecting line to another proportioning device depending on requirements and intended use, wherein the at least partially flexible design of the connecting line provides greater flexibility in the arrangement of the dosing unit, proportioning device and / or conveying air line to be connected. In a further preferred embodiment, a second conveying air line is provided, wherein the second conveying air line is connected at least to the first dosing unit, in particular to the first distribution device, wherein in particular the second conveying air line has a second proportioning device to which the connecting line can be connected, in particular detachably.The second conveying air line can be connected to the first dosing unit in such a way that a component to be dosed by the first dosing unit can be dosed into the first and / or second conveying air line by means of a first distribution device. The second conveying air line can be arranged substantially parallel to the first conveying air line, in particular in the region of the first dosing unit. Furthermore, the second conveying air line can be designed to be at least partially rigid and / or flexible. The second mixing device can be arranged adjacent to the first mixing device; in particular, the first and second mixing devices can be designed as a single component, for example in one piece. The second mixing device can be arranged on the inlet opening side of the first dosing device, in particular as a separate component or at least partially in one piece with the dosing device.Through the second mixing device, a component dosed by the second dosing device can also be introduced into the second conveying air line, whereby this change can be carried out by a cost-effective, simple switching of the connecting line from one mixing device to the other mixing device.

[0013] In a preferred embodiment, the first conveying air line and the second conveying air line are at least partially connected to the same and / or different delivery units. The first and second conveying air lines can, for example, each be connected to delivery units, in particular similar ones, in different device sections, or to delivery units, in particular different ones, in the same device section. This ensures, on the one hand, a distribution of components across the entire working width of a device, and, on the other hand, a desired distribution of components to different delivery units can be ensured for different applications.

[0014] In a further preferred embodiment, a third dosing unit is provided, which is fluid-permeable to the first and / or second conveying air line, either directly or via a proportioning device. The third dosing unit can be arranged on the delivery unit side of the first dosing unit on the first and / or second conveying air line. This has the advantage that components of both the first and the third dosing unit can be metered into the first and / or second conveying air line. A fluid-permeable connection between the third dosing unit and a further proportioning device can be established by means of a further connecting line, which would provide additional flexibility in the arrangement and use of the installation space when placing the third dosing unit.

[0015] In a preferred embodiment, the pneumatic conveying system comprises at least one blower, which supplies conveying air to at least the first conveying air line. The blower can supply conveying air to conveying components, particularly in a controllable manner, via air lines. If there are multiple conveying air lines, several blowers can supply conveying air to these lines, with the blowers being connected to different conveying air lines. This has the advantage that conveying air lines have different, particularly separate, air systems, which can be controlled and / or switched independently of one another. Blowers can also be provided for different purposes, for example, for providing conveying air and / or separating air for dispensing units.

[0016] Preferably, a switch unit is arranged between the, in particular third, dosing unit and the conveying air lines connectable thereto, for establishing a, in particular switchable, fluid-permeable connection between the dosing unit and at least one conveying air line and / or a dispensing unit. The switch unit can be arranged on the dispensing unit side or on the conveying opening side of the, in particular third, dosing unit and can have a fixed or adjustable, in particular switchable, division ratio. The switch unit can be designed as a separate component or at least partially integral with the dosing unit. This has the advantage that a component dosed by the, in particular third, dosing unit can be distributed between at least two conveying air lines and / or dispensing units.

[0017] Further preferably, at least one third conveying air line is provided with at least one third dispensing unit, wherein the third conveying air line is fluid-permeable to, in particular at least or only to, the second dosing unit, wherein in particular the third conveying air line has at least one third admixing device for fluid-permeable connection to the second dosing unit. The third conveying air line can be designed as an uninterrupted connection of the second dosing unit to the third dispensing unit, and in particular can not be connected to the first and / or third dosing unit. The third conveying air line can have a third admixing device, in particular in a region facing away from the third dispensing unit, which can be connected to the second dosing unit via the connecting line.The connecting line of the second dosing unit can be detachably connected to several mixing devices, further expanding the application possibilities of the device or distribution system. The third conveying air line can be at least partially rigid and can be supplied with conveying air from the blower via an air line.

[0018] In a preferred embodiment, the dosing unit comprises at least one dosing device for dosing a component and / or at least one distribution device, in particular arranged on the dosing device, for introducing the dosed component into at least one conveying air line. In order to convey the most precise amount of a component possible, the dosing unit comprises at least one dosing device, which can be designed, for example, in the form of a rotary valve, whereby volumetric dosing of the component or the granular solid can be enabled. The dosing device is assigned to at least one conveying air stream, but can also be assigned, for example, to two conveying air streams in order to dose the component into one and / or both conveying air streams.A distribution device of the dosing device, in particular arranged on the dosing device, serves for a targeted, controllable introduction of the dosed component into at least one conveying air line.

[0019] The dosing unit, in particular the dosing device and / or the distribution device, preferably has at least one inlet opening on the storage container side, at least one inlet opening for conveying air and at least one conveying opening for discharging the dosed granular solid, as well as at least one calibration opening. At least one component of the dosing unit, in particular the dosing device, can be supplied via the inlet opening from a storage container assigned to the dosing unit. A distribution device assigned to the dosing device can have at least one inlet opening, which can be connected to an air line for supplying conveying air and a conveying opening for discharging the component. The distribution device can have two inlet openings and / or conveying openings arranged parallel to one another.A calibration test for checking the dosing quantity can be arranged via at least one calibration opening arranged on the bottom side of the dosing unit, in particular the distribution device.

[0020] In a preferred embodiment, the dosing unit, in particular the distribution device, has at least one slide valve, in particular a rotary slide valve, assigned to a conveying air line in order to introduce the component into the conveying air line and / or the turning opening. By means of the slide valve, a metered component can be fed to one or more conveying openings and / or conveying air lines, and / or a turning opening. The slide valve can be designed to be translationally movable. A slide valve in the form of a rotary slide valve can be mounted so as to be rotatable about an axis of rotation, wherein the axis of rotation can be arranged relative to the conveying direction and / or to a conveying air line connected to the housing. The axis of rotation can be oriented substantially horizontally, vertically, or obliquely, for example at an angle to the horizontal. In an oblique arrangement, several conveying openings and / or turning openings can be switchable by the rotary slide valve.

[0021] Particularly preferably, a conveying air line has sub-lines in the form of at least one conveying line for passing components and / or at least one component-free air line, wherein in particular a diameter (du) of the air line is less than or equal to a diameter (dpi) of the conveying line or the connecting line. The air lines and / or conveying lines can be at least partially rigid and / or flexible. An air line can connect the at least one blower to a dosing unit and / or an admixing device in a fluid-permeable manner in order to supply the conveying air line in question with conveying air. A conveying line can connect a dosing unit and / or an admixing device to at least one dispensing unit in a fluid-permeable manner. An air line can have a smaller diameter than a conveying line and / or an inlet opening of a dosing unit or a distribution device.Due to the at least partially flexible design of the air duct and a reduced diameter, the blower can be positioned more flexibly and thus installation space can be better utilized.

[0022] The invention further relates to an agricultural implement with a distribution system for conveying at least two components in the form of granular solids from at least one storage container to a number of delivery units according to one of claims 1 to 13. The agricultural implement can preferably be designed in the form of a seed drill for drilling or a precision seed drill.

[0023] Further details of the invention can be found in the figures and the description of the figures.

[0024] They show:

[0025] Fig 1 : a distribution system for an agricultural implement for

[0026] Conveying granular solids in a perspective, schematic view; and

[0027] Fig. 2: a perspective, schematic view of a first and second

[0028] Dosing unit of the distribution system. Fig. 1 shows a perspective view of a distribution system for an agricultural implement in the form of a seed drill. The distribution system 10 has a pneumatic conveying system 14 and several dosing units 16, 18, 54, which are connected to several conveying air lines 20, 22, 38 in order to convey components in the form of granular solids from the dosing units 16, 18, 54 by means of conveying air to delivery units 12, 42, 44 for placement in and / or on a soil. The components in the form of granular solids can be, for example, seeds, microgranules, fertilizers, or slug pellets. For depositing a component in the soil, the delivery units 12, 42 can be designed, for example, in the form of seed coulters. A first dosing unit 16 is connected to a first storage container 24 in which at least one component ora granular solid can be stored, which is metered by means of a first metering device 46 and fed into a distribution device 48 arranged below the first metering device 46. The first distribution device 48 is connected in a fluid-permeable manner to a first conveying air line 20 and a second conveying air line 22. The first and second conveying air lines 20, 22 are arranged in parallel and rigid in a section up to a third metering unit 54, which is arranged on the dispensing unit side of the first metering unit 16. The third metering unit 54 is connected to a third storage container 60, in which at least one component or a granular solid can be stored, which is metered by means of a third metering device 56 and fed into a third distribution device 58 arranged below the third metering device 56.

[0029] Granular solids can be introduced into the first and / or second conveying air lines 20, 22 through the first and / or third distribution devices 48, 58 and thus supplied to the respective dispensing units 12, 42. To convey the components, the first and second conveying air lines 20, 22 are each pressurized with conveying air by the pneumatic conveying system 14, wherein the first and second conveying air lines 20, 22 are each connected to at least one blower 72 via air lines 74. The air lines 74 are connected to the first and second conveying air lines 20, 22 on a side of the first dosing unit 16 facing away from the dispensing units 12, 42, 44.

[0030] In order to introduce a further component into the first conveying air line 20 and / or the second conveying air line 22 and to dispense it, for example, together with a component of the first and / or third dosing unit 16, 54, the first and / or second conveying air line 20, 22 are connected in a fluid-permeable manner to a second dosing unit 18. The second dosing unit 18 is connected to a second storage container 26 for granular solids. For admixing, the first conveying air line 20 has a first admixing device 28 and the second conveying air line 22 has a second admixing device 30, which are each connected to the second dosing unit 18 or can be connected to it, in particular by means of a connecting line 32. The first and second admixing devices 28, 30 are arranged in the first and second conveying air lines 20, 22 on a side of the first dosing unit 16 facing away from the dispensing units.

[0031] At least one connecting line 32 is provided to connect the first and / or second admixing device 28, 30 to the second dosing unit 18. The connecting line 32 is predominantly designed as a flexible line and is connected to the second dosing unit 18 in a fluid-permeable manner at a first end. At a second end, opposite the first, the connecting line 32 can be detachably connected to a, in particular first, second, or further, admixing device 28, 30, 78. The connecting line 32, in particular its second end, can thus be reconnected as needed without great effort and connected to alternative conveying air lines 20, 22, 38.It is conceivable that a switch unit is arranged at one end facing the second dosing unit 18, which divides the conveying air coming from the second dosing unit 18 in a switchable manner or at a fixed ratio between at least two connecting lines 32, which can then be connected, in particular detachably, to mixing devices 28, 30, 78. To supply the second dosing unit 18 with conveying air, the latter is connected to the blower 72 via at least one air line 74.

[0032] The first and second conveying air lines 20, 22 are formed between the first and third dosing units 16, 54 in the form of rigid and essentially parallel first and second conveying lines 34, 36. Viewed in the conveying direction FR, the first and second conveying air lines 20, 22 on the delivery unit side of the third dosing unit 54 are formed in the form of essentially flexible conveying lines 34, 40, which are connected to the first and second delivery units 12, 42. In the first conveying air line 20, on the delivery unit side of the third dosing unit 54, a switch unit 76 is arranged, which divides the conveying air flow of the first conveying air line 20 into two first conveying lines 34. The two first flexible conveying lines 34 are connected to the first and second delivery units 12, 42. The second conveying line 36 of the second conveying air line 22 is connected only to the first delivery unit 12.

[0033] To ensure the application of the desired amount of granular solid, for example seed, a so-called calibration test is usually carried out before application begins. Here, the desired dosage amount is set on the machine and then the respective dosing unit 16, 18, 54 is operated for a specific time. The dosed seed is not transported away via conveying air lines 20, 22, 38, but is guided from the dosing unit 16, 18, 54 upstream of the respective distribution device 48, 52, 58 or through the distribution device 48, 52, 58, for example into a calibration trough 70. In the embodiment shown, a calibration trough 70 is arranged below the third dosing unit 54 and collects the granular solid discharged from the third dosing unit 54 during a calibration test.

[0034] In addition to the first and second conveying air lines 20, 22, a third conveying air line 38 is provided, which has no connection to the first and / or third dosing unit 16, 54. The third conveying air line 38 is essentially designed as a rigid third conveying line 40 with a third dispensing unit 44. The third conveying air line 38 extends essentially along the first and second conveying air lines 20, 22, beyond the second dispensing unit 42, up to the first dispensing unit 12. The third dispensing unit 44 is arranged above and / or behind the first dispensing unit 12, as viewed in a working direction, and is designed in particular for depositing a granular solid on a soil surface. It is also conceivable to arrange the dispensing unit 44, in particular the third, upstream of the first and / or second dispensing unit 12, 42, as viewed in the working direction, whereby a component can be introduced into the soil and / or applied to the soil.

[0035] Fig. 2 shows a detailed view of the first and second dosing units 16, 18 of the distribution system 10 shown in Fig. 1. The first dosing device 46 of the first dosing unit 16 is arranged between the first storage container 24 and the first distribution device 48, wherein the granular solid is fed essentially by gravity from the first storage container 24 to the first dosing device 46 via an inlet opening 62. The first dosing device 46 then discharges a specific amount of granular solid into the first distribution device 48. The distribution device 48, 52, 58 has two inlet openings 64 on a side facing away from the discharge units 12, 42, 44, and two conveying openings 66 assigned to the inlet openings 64 on a side facing the discharge units 12, 42, 44, through which granular solid material from the distribution device 48, 52, 58 is conveyed into conveying air lines 20, 22 or 24 connected to the latter.Conveyor lines 34, 36 can be fed in. The second distribution device 52 has two conveying openings 66, one of the conveying openings 66 being shown without a connected connecting line 32 for the sake of clarity, and the other conveying opening being shown with a connected connecting line 32. An air line 74 associated with the unconnected conveying opening 66 is accordingly shown only in dashed lines. The distribution device 48, 52, 58 has a calibration opening 68 on the bottom through which granular solids can be discharged from the distribution device 48, 52, 58 during a calibration test. Within the distribution device 48, 52, 58 there is at least one slide valve (not shown), in particular a rotary slide valve, for directing the granular solids to the first and / or second conveying air line 20, 22, each of which is connected to a conveying opening 66.The slide valve, in particular a rotary slide valve, can be moved into a conveying position and a turning position in order to guide granular solids to a conveying opening 66 or to a turning opening 68.

[0036] At the inlet openings 66 of the first dosing unit 16, first and second mixing devices 28, 30 are arranged, which are assigned to the first and second conveying air lines 20, 22. A mixing device 28, 30, 78 is essentially Y-shaped and has a main line 80 and a mixing line 82, which is arranged at an angle to the main line 80. The main line 80 is connected on one side via an air line 74 to the blower 72 for supplying conveying air and on the opposite side to a dosing unit 16, 18, 54, in particular its distribution device 48, 52, 58 or inlet opening 64, or to a conveying line 34, 36, 40 of a conveying air line 20, 22, 38. A connecting line 32 to a further dosing unit 16, 18, 54 can be detachably connected to a mixing line 82 of a mixing device 28, 30, 78.

[0037] In the embodiment shown in Fig. 2, the second dosing unit 18 can be alternatively connected to the first, second, or third mixing device 28, 30, 78 and thus to the first, second, or third conveying air line 20, 22, 38 via a connecting line 32 by reconnecting one end of the connecting line. The third conveying air line 38 is not connected to the first dosing unit 16, but can be connected to the second dosing unit 18 via a third mixing device 78, which is arranged at the end of the third conveying line 40, through the connecting line 32. The main lines 80 of the mixing devices 28, 30, 78 are each connected to the blower 72 via air lines 74, wherein a diameter du of an air line 74 is smaller than a diameter dFL of the associated conveying line 34, 36, 40 or connecting line 32.

[0038] Reference symbol

[0039] Distribution system 64 inlet opening

[0040] First delivery unit 66 conveyor opening

[0041] Conveyor system 68 twist opening

[0042] First dosing unit 70 calibration tank

[0043] Second dosing unit 72 blower

[0044] First conveying air line 74 Air line

[0045] Second conveying air line 76 switch unit

[0046] First storage container 78 Third mixing device

[0047] Second storage tank 80 main line

[0048] First mixing device 82 mixing line

[0049] Second mixing device

[0050] connecting line

[0051] First production line

[0052] Second conveyor line FR conveyor direction

[0053] Third conveying air line dFL Diameter conveying line

[0054] Third conveyor line di_i_ Diameter air line

[0055] Second delivery unit

[0056] Third delivery unit

[0057] First dosing device

[0058] First distribution device

[0059] Second dosing device

[0060] Second distribution device

[0061] Third dosing unit

[0062] Third dosing device

[0063] Third distribution device

[0064] Third storage container

[0065] Inlet opening

Claims

Patent claims 1. Distribution system (10) for an agricultural implement for conveying at least two components in the form of granular solids to at least one dispensing unit (12, 42, 44), comprising a pneumatic conveying system (14) with at least one first conveying air line (20), wherein at least one first and one second dosing unit (16, 18) are provided, each of which is assigned at least one storage container (24, 26) for storing granular solids, wherein the first dosing unit (16) is connected in a fluid-permeable manner to at least the first conveying air line (20), characterized in that the first conveying air line (20) has at least one first admixing device (28), wherein the second dosing unit (18) is connected in a fluid-permeable manner to the first admixing device (28) via at least one connecting line (32), in particular detachably.

2. Distribution system according to claim 1, characterized in that the admixing device (28, 30, 78) is arranged in the conveying air line (20, 22, 38) in a conveying line (34, 36, 40) and / or, in particular on the inlet opening side and / or conveying opening side, on a dosing unit (16, 18, 54).

3. Distribution system according to claim 1 or 2, characterized in that the at least one connecting line (32) is designed in the form of an at least partially flexible, in particular hose-like, line.

4. Distribution system according to one of the preceding claims, characterized in that a second conveying air line (22) is provided, wherein the second conveying air line (22) is connected at least to the first dosing unit (16), in particular to the first distribution device (48), wherein in particular the second conveying air line (22) has a second mixing device (30) to which the connecting line (32) can be connected, in particular detachably.

5. Distribution system according to one of the preceding claims, characterized in that the first conveying air line (20) and second conveying air line (22) are at least partially connected to the same and / or different delivery units (12, 42, 44).

6. Distribution system according to one of the preceding claims, characterized in that a third dosing unit (54) is provided, which is connected to the first and / or second conveying air line (20, 22) in a fluid-permeable manner directly or via an admixing device (28, 30).

7. Distribution system according to one of the preceding claims, characterized in that the pneumatic conveying system (14) has at least one blower (72) which supplies conveying air to at least the first conveying air line (20).

8. Distribution system according to one of the preceding claims, characterized in that a switch unit (76) for the, in particular switchable, fluid-permeable connection between the dosing unit (16, 18, 54) and at least one conveying air line (20, 22, 38) and / or a dispensing unit (12, 42, 44) is arranged between the, in particular third, dosing unit (16, 18, 54) and the conveying air lines (20, 22, 38) connectable thereto.

9. Distribution system according to one of the preceding claims, characterized in that at least one third conveying air line (38) with at least one third dispensing unit (44) is provided, wherein the third conveying air line (38) is connected in a fluid-permeable manner to, in particular at least or only to, the second dosing unit (18), wherein in particular the third conveying air line (38) has at least one third admixing device (78) for the fluid-permeable connection to the second dosing unit (18).

10. Distribution system according to one of the preceding claims, characterized in that the dosing unit (16, 18, 54) has at least one dosing device (46, 50, 56) for dosing a component and / or at least one distribution device (48, 52, 58), in particular arranged on the dosing device (46, 50, 56), for introducing the dosed component into at least one conveying air line (20, 22, 38).

11. Distribution system according to one of the preceding claims, characterized in that the dosing unit (16, 18, 54), in particular the dosing device (46, 50, 56) and / or the distribution device (48, 52, 58), has at least one inlet opening (62) on the storage container side, at least one inlet opening (64) for conveying air and at least one conveying opening (66) for conveying away the dosed granular solid, as well as at least one turning opening (68).

12. Distribution system according to one of the preceding claims, characterized in that the dosing unit (16, 18, 54), in particular the distribution device (48, 52, 58), has at least one slide, in particular a rotary slide, associated with a conveying air line (20, 22, 38) in order to introduce the component into the conveying air line (20, 22, 38) and / or the turning opening (68).

13. Distribution system according to one of the preceding claims, characterized in that a conveying air strand (20, 22, 38) has partial strands in the form of at least one conveying line (34, 36, 40) for passing components and / or at least one component-free air line (74), wherein in particular a diameter (du) of the air line (74) is smaller than / equal to a diameter (dpi) of the conveying line (34, 36, 40) or the connecting line (32).

14. An agricultural implement with a distribution system (10) for conveying at least two components in the form of granular Solids from at least one storage container (24, 26, 60) to a Number of dispensing units (12, 42, 44) according to one of claims 1 to 13.

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