Pneumatic fertilizer spreader

Abstract

The invention relates to a pneumatic fertilizer spreader (1) for spreading material, wherein the pneumatic fertilizer spreader (1) comprises a storage container (3) for carrying and / or providing the material to be spread. The invention is characterized in that the storage container (3) has at least four tapered areas (24) arranged one behind the other in a lower area (23) in the direction of travel (FR), each of the tapered areas (24) having at least one outlet opening (7).

Description

[0001] The invention relates to a pneumatic fertilizer spreader for spreading material, wherein the pneumatic fertilizer spreader comprises a storage container for carrying and / or providing the material to be spread.

[0002] Fertilizer dispensers of this type are known from the prior art, which additionally have one or two outlets in a lower section of the storage container to enable optimal emptying of the container. Due to the flow properties of fertilizer, inclined elements in the storage container are necessary to ensure that the fertilizer flows to an outlet of the storage container.

[0003] However, this limits the design of the storage container.

[0004] The object of the invention is therefore to provide a pneumatic fertilizer spreader with a tank that is both large in size and can be reliably emptied.

[0005] These problems are solved by a pneumatic fertilizer spreader with the features of independent claim 1. Advantageous embodiments and further developments of the invention are disclosed in the claims and the following description with partial reference to the figures.

[0006] According to the invention, a pneumatic fertilizer spreader is provided, which is designed for spreading material. The pneumatic fertilizer spreader includes a storage container for carrying and / or providing the material being spread.

[0007] The invention is characterized in that the storage container has at least four tapered areas arranged one behind the other in the direction of travel in a lower area, each of the tapered areas having at least one outlet opening.

[0008] By providing at least four consecutive and tapered sections, the emptying of the storage tank can be improved, and in particular the risk of residual material remaining in the tank can be reduced.

[0009] Furthermore, the geometry of the hopper can be adapted and further optimized. Preferably, the hopper can be made larger, thus allowing more material to be supplied via the hopper. Likewise, material-related requirements that must be considered for the pneumatic fertilizer spreader, such as the flowability of the material, can also be reduced.

[0010] According to a preferred embodiment, the outlet openings can be spaced apart from each other when viewed in the direction of travel. This allows for improved emptying of the storage container along its entire length in the direction of travel.

[0011] Preferably, the tapered sections belonging to the outlet openings are coupled together. Preferably, the tapered sections are coupled together in such a way that the flow of the distributed material to the respective outlet opening is ensured. This means that the lower section is designed such that it is free of areas where the distributed material can accumulate and not flow to one of the outlet openings.

[0012] According to a preferred embodiment, it can be provided that at least one, preferably each, of the tapered areas has at least one inclined surface which is arranged at an angle, preferably an acute angle, to a horizontal plane.

[0013] Preferably the angle is greater than 0°. Preferably the angle is between 5° and 85°, more preferably 10° to 75°, and further preferably between 15° and 65°, and particularly preferably at least 20°.

[0014] Alternatively or cumulatively, the inclined surface can at least have a curvature.

[0015] Providing at least one sloping surface can improve the flow of the distributed material.

[0016] According to a preferred embodiment, the storage container may have at least one chamber. Preferably, each chamber may contain dispersible material. Preferably, the chambers are separate from one another. This means that the dispersible material in one chamber cannot mix with dispersible material from other chambers within the storage container, unless a device specifically designed for this purpose is provided.

[0017] By providing multiple chambers, it is possible to obtain different materials for distribution and / or to achieve specific emptying of the hopper, for example, to obtain the most optimal weight distribution across the length and / or width of the hopper or fertilizer spreader. For example, positive support loads can always be achieved. Preferably, the configuration unit is set up to coordinate the removal of material from multiple chambers, preferably based on an instantaneous support load. Preferably, sensors are provided that are configured to detect an instantaneous support load and make it available to the configuration unit. Preferably, the configuration unit can be set up to determine the instantaneous support load based on the weight ratio of the material in the chambers and the geometry of the fertilizer spreader.

[0018] It may be particularly advantageous for each chamber to be assigned at least one of the four tapered sections. This allows for the emptying or removal of material from the respective chamber.

[0019] According to a further preferred embodiment, the storage container may be configured such that at least one of its chambers is adjustable in size. Preferably, partitions may be provided to divide the storage container into chambers. Preferably, the partitions may be permanently attached to the storage container. Alternatively or cumulatively, the partitions may be detachably attached to the storage container. This allows the respective partition to be removed from the storage container, thereby allowing the geometry of the storage container to be adjusted. Preferably, the storage container and / or the chambers may be manually and / or automatically adjustable.

[0020] According to a further preferred embodiment, each outlet opening may be assigned at least one metering device. Preferably, the metering device is configured to meter the dispersed material into the chamber associated with the outlet opening, preferably volumetrically and / or gravimetrically. The respective metering device is configured to dispense the dispersed material from the chamber or storage container in a metered manner, preferably with a variable quantity of dispersed material.

[0021] Preferably, each metering device is assigned at least one conveying device supplied with an air volume flow. Preferably, each conveying device can be assigned one or more conveying lines, which can be supplied with an air volume flow by means of a flow generation device. Preferably, the conveying device includes an airflow divider configured to divide the air volume flow from the flow generation device and distribute it to the conveying lines.

[0022] Section control can be achieved by providing at least one metering device for each outlet opening. In this case, at least four sections can already be achieved through the at least four metering devices. Preferably, the sections are further reduced by means of the conveying lines.

[0023] This means that the at least four possible section widths already allow for meaningful section control at large working widths, and / or finer section control at smaller working widths.

[0024] Preferably, each of the conveying lines may be assigned at least one distribution element, which is designed to distribute the material being spread across the agricultural area. Preferably, the respective distribution element may include or be formed by a deflector plate.

[0025] According to a further preferred embodiment, a configuration unit may be provided which is set up to configure the metering devices based on a quantity of material to be distributed.

[0026] Preferably, the configuration unit is set up to configure the respective dosing unit so that each dosing unit dispenses a definable quantity of the respective material from the respective chamber, preferably based on the quantity of material to be dispensed. Depending on the total quantity of material to be dispensed and / or the quantity of material from the respective chambers, the configuration unit is set up to configure the respective dosing unit.

[0027] The configuration unit is particularly preferred for configuring the dosing devices in a coordinated manner, for example, based on a quantity ratio and / or a mixing ratio.

[0028] The quantity ratio can preferably determine how much material is to be dispensed from each chamber by the respective metering device. This can be particularly advantageous when several chambers are filled with the same material. This allows the system to determine which chamber should be emptied first.

[0029] The mixing ratio can preferably determine the ratio in which different distribution materials are to be withdrawn from the chambers by means of the respective dosing devices.

[0030] According to a further preferred embodiment, at least one further tapered section may be provided. Preferably, each further tapered section may be arranged in a direction transverse to the direction of travel, and the tapered sections may be arranged one after the other.

[0031] Preferably, it may be provided that each further tapered area is designed like a tapered area.

[0032] Preferably, four further tapered sections, each with at least one outlet opening, can be provided. This allows for a symmetrical arrangement of the tapered and further tapered sections, thus enabling further optimized emptying or removal of the distributed material.

[0033] Preferably, a further tapered section can be assigned to a chamber. Preferably, at least one tapered section and a further tapered section are assigned to a chamber.

[0034] According to a further preferred embodiment, a flow-generating device may be provided which is configured to generate a pressure level in the storage container. Preferably, the generated pressure level in the storage container is greater than atmospheric pressure.

[0035] Preferably, the storage container is designed to be sealed pressure-tight, allowing a pressure level to establish itself within the container.

[0036] The pressure level generated in the storage container can improve the removal of distributed material from the storage container.

[0037] Preferably, the flow generation device is fluidically connected to the storage container via a fluidic connection.

[0038] Preferably, the fertilizer spreader comprises a distribution boom. The distribution boom is a distribution boom extending transversely to a direction of travel, wherein the distribution boom has several distribution lines, preferably with at least one outlet opening, with distribution elements, which distribution lines can be acted upon with an air volume flow generated by the flow generation device for conveying the distributed material.

[0039] Preferably, the distribution lines are connected to the delivery lines of the dosing devices and / or at least partially formed by them.

[0040] Preferably, the configuration unit is set up to change the flow generation device so that the pressure level in the storage tank and the pressure level in the delivery lines are matched, preferably equal, or the pressure level in the storage tank is greater than the pressure level in the delivery lines.

[0041] This allows the material to be dosed into the conveying lines by free fall or under pressure.

[0042] According to a preferred embodiment, the distribution linkage may include a support device, wherein the support device is coupled to a frame of the distribution machine, wherein the support device is arranged to be height-adjustable relative to the frame by means of a height adjustment unit.

[0043] Preferably, the support device can have a support frame to which the distribution linkage is coupled.

[0044] The support frame can be designed in such a way that, for example, a parallelogram and / or a linear unit can be attached. Furthermore, it would be conceivable for the storage container and / or the conveyor system to be integrated into the frame.

[0045] Preferably, the configuration unit can be set up to change the height of the distribution boom, i.e., it can be provided that the distribution boom is height-adjustable relative to an agricultural area and / or a crop stand. This is achieved in particular by adjusting the height of the distribution boom in relation to the frame. The height adjustment can be implemented by means of a parallelogram or a linear unit arranged between the frame and the support device.

[0046] The parallelogram or linear unit can be assigned at least one actuator (e.g. one or more hydraulically and / or pneumatically operated linear drives such as cylinders or the like) to vary the height distance, i.e. to pivot the parallelogram or to adjust the linear unit.

[0047] The parallelogram and / or the linear unit can expediently be part of the distribution linkage, or in particular the support device can be connected to the parallelogram and / or the linear unit.

[0048] According to a further preferred embodiment, the distribution linkage may have a linkage center section which is rotatably coupled to the support device about an axis of rotation oriented in the direction of travel. Thus, the distribution linkage can follow the direction of travel due to forces acting upon it.

[0049] Preferably, the configuration unit is set up so that the distribution rod's rotational position can be configured by means of its rotatable coupling to the support structure. Preferably, the configuration of the distribution rod's rotational position includes control and / or regulation. Preferably, a sensor device is provided and configured to detect the rotational position of the distribution rod. Preferably, the configuration unit is set up to perform the configuration of the rotational position based on the detected rotational position.

[0050] Preferably, at least one actuator is provided which is coupled to the carrier device and the distribution linkage, and wherein the configuration unit is configured to influence the actuator, preferably by means of the rotational position of the distribution linkage.

[0051] According to a further preferred embodiment, the configuration unit can be configured to configure each of the metering devices, the configuration preferably including control and / or regulation. Preferably, the configuration unit is configured, based on a detected failure of at least one of the metering devices, to configure the other metering devices and / or the flow generation device such that the amount of material to be dispensed remains essentially constant.

[0052] The configuration unit includes, for example, a computer unit, an on-board computer, and / or the like, and preferably comprises a control circuit, in particular a hydraulic, pneumatic, and / or electrical control circuit, wherein the control circuit is expediently designed for hydraulic, pneumatic, and / or electrical signal and / or command transmission. This signal and / or command transmission can also be wireless (e.g., via WLAN).

[0053] In the context of the invention, the term "configuration unit" encompasses, in particular, the entirety of components for signal and / or command transmission. Accordingly, this also includes computer units, CPUs, and / or the like. Likewise, it also includes control devices integrated into the respective sensors, sensor units, or sensor arrangements. It should also be noted that the signals and / or data from the sensors, measuring devices, detection devices, and / or the like can each be used as feedback for a control variable.

[0054] It should be noted that the terms "configure," "control," "regulate," and "configuration unit" can refer to electronic and / or pneumatic and / or hydraulic controls or regulators, which, depending on their design, can perform control and / or regulation tasks. Even though the term "configure" is used here, it can also appropriately encompass "control" and / or "regulate."

[0055] To avoid repetition, it should be noted that the embodiments and features according to the invention can be combined in any way and freely.

[0056] For the purposes of the application, features disclosed in conjunction with other features may also be considered disclosed on their own. Features linked by "and / or" are to be understood as disclosed both on their own and in combination with the other features.

[0057] Further details and advantages of the invention are described below with reference to the accompanying drawings. The relative sizes of the individual elements in the figures do not always correspond to the actual relative sizes, as some shapes are simplified and others are enlarged for better illustration in relation to other elements. The figures show: Fig. 1. A pneumatic fertilizer spreader in a perspective view; Fig. 2 the fertilizer spreader according to Fig. 1 in a side view; Fig. 3 schematically a section of a fertilizer spreader's hopper in a side view; Fig. 4 schematically a section of a storage container in a top view;

[0058] The in the Fig. 1, Fig. 2, Fig. 3 to Fig. The four embodiments shown are at least partially identical, so that similar or identical parts are provided with the same reference numerals and, to avoid repetition, reference is also made to the description of the other embodiments or figures for their explanation.

[0059] The pneumatic fertilizer spreader 1 is particularly useful for applying, or distributing, granular agricultural materials in desired quantities on agricultural land. Examples of such materials include agricultural fertilizers, microgranules, seeds, and the like.

[0060] The fertilizer spreader 1 is designed as a fertilizer spreader 1 pulled by a towing vehicle (e.g., a tractor, not shown here), but the fertilizer spreader 1 can also be self-propelled or mounted on a towing vehicle. The fertilizer spreader 1 could also be an autonomous vehicle (e.g., fully autonomous or semi-autonomous) or mounted on an autonomous carrier vehicle.

[0061] The fertilizer spreader 1 comprises a frame R supporting the components of the fertilizer spreader 1, as well as at least one storage container 3 for carrying and / or providing the spreading material. Two or more storage containers 3 for two or more, in particular different, spreading materials may also be provided, i.e., in particular, mounted on the frame R of the fertilizer spreader 1.

[0062] To achieve maximum efficiency, i.e., a large working width, the fertilizer spreader 1 has a spreading boom 5 extending transversely to the direction of travel FR with a large working width (e.g., 24 meters, 30 meters, 36 meters or more). The spreading boom 5 comprises a support structure 10 connected to the frame R, a boom center section 11, and outriggers 13 pivotably mounted on the boom center section 10 relative to the boom center section 11. Preferably, each outrigger has at least one boom section 12, which can be rotatably assembled about vertically oriented axes. The boom center section 1 can also be referred to as a boom section 12.

[0063] To comply with a permissible transport width (e.g. 3 meters in Germany), the booms 13 are pivotably mounted on the central section of the linkage 10 about upright oriented axes 14.

[0064] The distribution linkage 5, in particular its central linkage section 11, is supported by a bearing 15, which according to the Fig. 2 is shown only in outline, rotatable transversely to the direction of travel FR about a pivot axis oriented in the direction of travel relative to the frame R on the support structure 10. The rotational position can be controlled and / or regulated, in particular by means of an actuating device (not shown) which can be controlled by a control device, and which can be mounted, in particular, between the linkage center section 11 and the support structure 10 and / or between the linkage center section 11 and the frame R.

[0065] The frame R can also preferably be expediently designed in multiple parts, wherein the individual parts can in turn be connected by means of a permanent (e.g. welding) and / or detachable (e.g. screws or similar machine elements) connection.

[0066] The frame R also includes a chassis 16 with running wheels, which according to the exemplary embodiments can in particular be a tandem chassis, and a connecting device 17 for connection to a towing vehicle. In addition, the storage container 3 is part of the frame R.

[0067] To adjust the height of the distribution linkage 5, the support device 10 is mounted on the frame R in a height-adjustable manner by means of a height adjustment device 10.1, for example a parallelogram.

[0068] A metering device 4 with a metering container 18 is associated with the central section 11 of the distribution linkage 5; in particular, these form a single structural unit. A conveying system 19, comprising a conveying line and / or a conveying device 20, opens into the metering container 18. However, several conveying lines and / or conveying devices 20 could also open into the metering container 18 in order to supply it with one, two, or more different distributed materials.

[0069] Presented according to the Fig. 1 and Fig. Figure 2 shows the conveying system 19 in an embodiment with several conveying sections 21, 22, which are exemplified as screw conveyors. According to the Fig. Figure 3 shows another embodiment, wherein the conveying system 19 is pneumatically operated.

[0070] Preferably, both the storage container 3 and the dosing container 18 taper downwards in a funnel shape, with at least one outlet opening (not shown here) arranged at the lowest point in each case.

[0071] The outlet opening is formed by an opening in the respective container 3, 18, through which, for example, distributed material from the storage container 3 is conveyed into the conveying system 19 and / or from the dosing container 18 into the dosing device 4, whereby the outlet opening thus simultaneously forms the inlet of the conveying system 19 and / or the dosing device 4.

[0072] The material being spread from the metering device 4 is conveyed to the distribution elements 8 attached to the distribution boom 5 by means of distribution lines 6 along the distribution boom 5. During operation of the fertilizer spreader 1, the material is transported along the distribution lines 6 by means of an airflow, whereby the distribution lines 6 are coupled, i.e., operatively connected, by means of a flow-generating device (e.g., one or more blowers such as centrifugal blowers, radial blowers, axial blowers, diagonal blowers, cross-flow blowers, or the like).

[0073] A plurality of distribution lines 6 are attached along the distribution rod 5, each of which, according to the exemplary embodiments, has a distribution element 8 attached. However, two or more distribution elements 8 per distribution line 6 would also be conceivable or possible, with each distribution line 6 having a distribution element 8 assigned to its respective outer end, which forms an outlet opening 7. Furthermore, the distribution lines 6 have different lengths extending from the metering device 4 along the distribution rod 5.

[0074] In order to achieve a compact distribution linkage 5, the distribution lines 6 are also arranged one above the other, meaning that a large number of distribution lines 6 are arranged one above the other.

[0075] Furthermore, the distribution lines 6 are essentially symmetrical to each other on the distribution linkage 5 with respect to the central linkage section 11. In addition, the opposing distribution elements 8 each have at least a largely identical height position.

[0076] Furthermore, the distribution lines 6 have separation points, not shown here, between the rod center section 11 and the booms 13 or between the rod sections 12 of the booms 13.

[0077] The distribution elements 8 can be formed, in particular, by impact plates, against which the material to be distributed is conveyed by means of the air volume flow and subsequently distributed, for example, in a fan shape, depending on the shape of the impact plate. However, the distribution elements 8 can also be formed by an arc-shaped end section of the distribution lines 6, which can then, for example, act as impact plates themselves.

[0078] The distances between the distribution elements 8 can be such that, in particular, a full-surface distribution of the material being distributed is made possible by means of the spreading fans generated by the distribution elements 8, and in particular a seamless distribution of the material being distributed is made possible.

[0079] According to an alternative embodiment, it would also be conceivable that the distribution elements 8 are arranged on the distribution rod 5 in such a way, or that the spreading patterns created by the distribution elements 8 are such that the spreading patterns overlap. For example, a double or triple overlap of the spreading patterns could be provided, which in turn could increase the distribution quality, as shown in Fig. 3 is shown.

[0080] To supply the dosing device 4 with the respective distributed material, it is operatively connected to at least one storage container 3, whereby the operative connection can be made by means of a conveying system 19 with, for example, a conveying line 20 and by means of the dosing container 18.

[0081] The conveying system 19 according to the embodiment examples comprises at least one conveying line 20 or conveying device 20 leading into the dosing container 18; however, two or more conveying lines 20 could also be provided, in particular for different distribution materials.

[0082] The conveying system 19, or the conveying line 20 or the conveying facility 20, can be divided into at least two parts, that is, have several conveying sections 21, 22.

[0083] The conveying system 19 and / or the conveying sections 21, 22 can be formed by one or more screw conveyors and / or conveyor belts and / or pneumatic conveying sections and / or the like.

[0084] Alternatively or additionally, the conveying system 19 can also be formed, at least in sections, by a pneumatic conveying system in which distributed material is conveyed by means of an air volume flow along the conveying line 20.

[0085] The metering device 4 is assigned to the rod center section 11 and / or the support device 10 in such a way that these follow the vertical movements and / or the rotary movements of the distribution rod 5 at least largely synchronously.

[0086] Preferably, the pneumatic fertilizer spreader 1 comprises at least a frame R supporting components of the fertilizer spreader 1, a storage container 3 for carrying and providing the material to be distributed (e.g., seeds, fertilizer and / or the like).), a distribution linkage 5 extending transversely to the direction of travel FR, which distribution linkage 5 has a support device 10, a linkage center section 11 and booms 13 rotatably attached to the linkage center section 11, wherein distribution lines 6 with distribution elements 8 and a metering container 18 operatively connected to the storage container 3 by means of a conveying system 19 are attached to the distribution linkage 5, wherein the distribution lines 6 can be supplied with an air volume flow to convey the distributed material along the distribution lines 6 to the distribution elements 8 and wherein, by means of at least one metering device 4 forming a structural unit with the distribution linkage 5 and operatively connected to the metering container 18, distributed material can be metered into the distribution lines 6.

[0087] In the Fig. 3 and Fig. Figure 4 schematically illustrates an embodiment of the present invention.

[0088] In the Fig. Figure 3 indicates the storage container 3, which has a lower area 23 in which the distributed material can accumulate.

[0089] The storage container 3 has at least four tapered sections 24 in its lower section 23, which are arranged one behind the other in the direction of travel FR. Each of the tapered sections 24 has at least one outlet opening 7. The outlet openings 7 are spaced apart from each other when viewed in the direction of travel FR.

[0090] Furthermore, each of the tapered areas 12 includes at least one inclined surface 26, so that the distributed material can always flow in the direction of the outlet openings 7.

[0091] Each outlet opening 7 is connected to at least one metering device 4, and each metering device 4 is connected to at least one conveying device 20 supplied with an air volume flow. The conveying device 20 is connected by means of at least one flow generation device 9, which is configured to generate the air volume flow and supply it to the conveying device(s). This is shown in the Fig. 3 shown schematically.

[0092] In addition, a configuration unit 27 is provided, which is set up to configure the dosing devices 4 based on a quantity of material to be distributed, preferably to configure them in a coordinated manner.

[0093] According to the Fig. Figure 4 illustrates a further development of the present invention. Fig. Figure 4 is a schematic view of the Fig.3 from above. It is provided that at least one further tapered area 25, preferably four further tapered areas 25, with at least one outlet opening 7, is provided, wherein each further tapered area 25 is arranged in a direction transverse to the direction of travel FR and one of the tapered areas 24 is arranged one behind the other.

[0094] Although the invention has been described with reference to specific embodiments, it is apparent to a person skilled in the art that various modifications can be made and equivalents used as substitutes without departing from the scope of the invention. Furthermore, many modifications can be made without departing from the relevant scope. Consequently, the invention is not intended to be limited to the disclosed embodiments but is intended to encompass all embodiments falling within the scope of the appended claims. In particular, the invention also claims protection for the subject matter and features of the dependent claims independently of the referenced claims. Reference symbol list: 1 pneumatic fertilizer spreader 2 Distributed goods 3 storage containers 4 Dosing device 5 distribution rods 6 distribution line 7 Outlet opening 8 distribution element 9 Flow generating device 10 Supporting institution 10.1 Height adjustment device 11 Linkage middle section 12 Linkage section 13 outriggers 14 upright oriented axis 15 Storage 16 Chassis 17 Connection device 18 dosing containers 19 Funding system 20 Conveyor line 21,22 Funding section 23 lower area 24 tapered area 25 more tapered sections 26 sloping surface 27 Configuration Unit 28th Chamber

Claims

Pneumatic fertilizer spreader (1) for spreading material, wherein the pneumatic fertilizer spreader (1) comprises a storage container (3) for carrying and / or providing the material being spread, characterized in that the storage container (3) has at least four tapered areas (24) arranged one behind the other in the direction of travel (FR) in a lower area (23), wherein each of the tapered areas (24) has at least one outlet opening (7). Pneumatic fertilizer control (1) according to claim 1, characterized in that the outlet openings (7) are spaced apart from each other when viewed in the direction of travel (FR). Pneumatic fertilizer spreader (1) according to at least one of claims 1 to 2, characterized in that at least one, preferably each, of the tapered areas (24) has at least one inclined surface (26) which is arranged at an angle, preferably an acute angle, to a horizontal plane. Pneumatic fertilizer spreader (1) according to at least one of claims 1 to 3, characterized in that each outlet opening (7) is assigned at least one metering device (4), wherein preferably each of the metering devices (4) is assigned at least one conveying device (20) supplied with an air volume flow. Pneumatic fertilizer spreader (1) according to at least claim 4 , characterized by a configuration unit (27) which is configured to configure the metering devices (4) on the basis of a quantity of material to be spread, preferably to configure them in a coordinated manner. Pneumatic fertilizer spreader (1) according to at least one of claims 1 to 5, characterized in that the storage container (3) has at least one chamber (28), wherein each chamber (28) is assigned at least one of the four tapered areas (24). Pneumatic fertilizer spreader (1) according to at least claim 6, characterized in that the storage container (3) is arranged such that at least one of the chambers (28) is variable in size, preferably manually variable. Pneumatic fertilizer spreader (1) according to at least one of claims 1 to 7, characterized by a flow generation device (9) which is configured to generate a pressure level in the storage container (3) which is greater than atmospheric pressure. Pneumatic fertilizer spreader (1) according to at least one of claims 1 to 8, characterized in that at least one further tapered section (25), preferably four further tapered sections (25), is provided with at least one outlet opening (7), wherein each further tapered section (25) is arranged in a direction transverse to the direction of travel (FR) and one of the tapered sections (24) is arranged one behind the other. Pneumatic fertilizer spreader (1) according to at least one of claims 1 to 9, characterized by a distribution linkage (5) which comprises a support device (10), wherein the support device (10) is coupled to a chassis (R) of the fertilizer spreader (1), wherein the support device (10) is arranged to be height-adjustable relative to the chassis (R). Pneumatic fertilizer spreader (1) according to at least claim 10, characterized in that the distribution linkage (5) has a linkage center part (11) which is rotatably coupled to the carrier device (10) about an axis of rotation oriented in the direction of travel (FR).

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