Set for pneumatic doser

Description

1 / 32 “PNEUMATIC DOSING ASSEMBLY” Divided from BR 10 2023 013654-0, deposited on 07 / 07 / 2023 Field of Invention

[001] The present invention relates generally to precision agriculture. More specifically, the invention relates to pneumatic seed metering devices and seed transport. Background of the Invention

[002] Precision agriculture is an area that encompasses interdisciplinary knowledge, generally associating georeferenced data of the productive area, the particularities of the crop to be planted and technologies, in order to maximize the yield and quality of the planting.

[003] By employing precision agriculture, it is possible to carry out more detailed management of the agricultural production system as a whole, not focusing only on the application of inputs or mapping techniques, but on all processes involved in production.

[004] The core of precision agriculture is based on the concept that within a single planting area there are variations in space, climate and period that influence the final crop yield. Therefore, the farmer must take care to map and evaluate the parameters of the entire extent of his planting area, dealing with possible specific particularities in certain regions and employing technologies in order to optimize processes and cut costs.

[005] One of the technologies most used by farmers concerns seed metering devices. In the state of the art there are several types of seed metering devices, with mechanical and pneumatic variants being the most prominent, the latter being the most used currently for planting at higher speeds.

[006] Pneumatic seed metering devices operate by means of a pressure differential between the faces of a disc fitted with Petition 870260068702, dated 10 / 07 / 2026, page 10 / 73 2 / 32 holes for seed coupling: the pressure difference between one face and the other generates a low-pressure condition on one of the faces of the vertically positioned disc, conveniently called a vacuum. This "vacuum" condition causes suction forces in the disc holes to capture the seeds and, subsequently, in a vacuum cut-off region (opening to atmospheric conditions), the seeds are released towards the planting furrows by the action of gravity.

[007] In general, pneumatic seed metering devices comprise a seed entry region, an internal rotating disc containing holes where seeds are captured and transported to a seed release region, a seed singulator composed of one or more elements that touch the seeds in order to singulate the seeds in the holes of the discs, a debris ejector to remove debris that may be stuck in the holes of the disc, a sealed region that provides a pressure difference between the two sides of the seed collection disc, and a region in which the seeds are released towards the planting furrows.

[008] Specifically, with the disc coupled to the pneumatic metering device, the pneumatic metering device works in such a way that the seeds enter through an inlet nozzle and accumulate in an internal chamber of the metering device that is divided by the disc into two portions, the first portion being the seed reservoir and the second portion the vacuum region. With the seeds accumulated in the seed reservoir and with the rotation of the disc, the disc agitators cause the seeds to disperse, preventing them from becoming compacted and clumped together inside the metering device, making capture difficult.

[009] The term “singulation” used in this invention document refers to the action of ensuring that only one seed is seated in each of the holes in the disc. Good singulation avoids the problems of skips and doubles, with “skip” being defined as the absence of a seed in Petition 870260068702, dated 10 / 07 / 2026, p. 11 / 73 3 / 32 a hole in the disc during the release stage, and "double" is defined as the multiplicity of seeds in the disc hole. Doubles and gaps disrupt the planting arrangement, compromising population density and, consequently, reducing crop yield.

[0010] Pneumatic seed meters have been the main choice among farmers for planting at higher speeds. The preference for pneumatic seed meters is due to the possibility of performing precise sowing even with planters operating at higher speeds.

[0011] The higher the linear speed of the planter, the higher the angular speed of the rotating disc must be to ensure adequate spacing between the seeds deposited in the same row. However, when rotating discs operate at high angular speeds, there is a greater probability of failures occurring.

[0012] At high angular velocities, the capture of seeds in the holes of the rotating disc is hindered, since the seeds have less time to settle in the holes of the discs as they rotate. In other words, the greater difficulty in the coupling of seeds in the holes of the rotating disc due to high speeds can lead to failures during seed deposition.

[0013] A higher angular velocity of the rotating discs demands an increase in the pressure difference in the vacuum region in order to facilitate the coupling of the seeds in their holes and avoid capture failures. Thus, decreasing the pressure in the vacuum region increases the suction forces in the holes of the rotating disc and improves the seed capture capacity. However, higher suction forces can lead to the capture of multiple seeds per hole of the rotating disc, which causes doubles during seed deposition. Petition 870260068702, dated 10 / 07 / 2026, page 12 / 73 4 / 32

[0014] It is still very common that during the transport of seeds to the farmer's storage location, or even during the filling of the seed box, some seeds break or release fragments of shells that may hinder the singulation process of the other seeds.

[0015] As a consequence, seed husks or fragments of broken seeds, among other debris, can clog the holes in the rotating disc, preventing the capture of seeds by vacuum (negative pressure), or in extreme cases accumulate in areas of movement of the internal parts and the input metering device and cause enough friction for the rotating disc to stop rotating, forcing the farmer to stop planting to carry out maintenance on the equipment, causing loss of productivity.

[0016] In order to mitigate errors that occur during the seed capture stage in the holes of the rotating disc, singulation structures are usually employed. Singulation structures are mechanical elements that work together with the rotating discs in seed metering devices to ensure that only one seed is attached to each hole of the disc until it is released from the metering device.

[0017] Obviously, if the singulators are not positioned correctly, they will not efficiently singulate the seeds and, furthermore, they can be extremely detrimental to planting, allowing two or more seeds to be deposited in the soil from the same hole in the rotating disc or, in worse cases, for no seeds to be metered in the soil.

[0018] As is known in the state of the art, “failures” and “doubles” are inconveniences caused by poor singulation when related to the spacing or coefficient of variation of the seeds deposited in the soil. “Failures” occur when the hole in the rotating disc is not filled with seeds, Petition 870260068702, dated 10 / 07 / 2026, page 13 / 73 5 / 32 and "doubles" occur when the hole in the rotating disc is filled with more than one seed.

[0019] Therefore, poor seed distribution in the soil causes uneven plant development within the planting area, impacting yield and potentially influencing the quality of planting achieved by the farmer.

[0020] In the state of the art there are several types of seed singulators. An example of a seed singulator is described in patent document US10299425 B2, by Sauder et al. This invention describes a singulation structure that constitutes a set of mechanical elements, positioned on the front face of the rotating disc so that their ends overlap the circumference delimited by the set of holes in the disc, conveniently called the seed passage path. In this configuration, excess seeds in a hole of the rotating disc are scraped from the holes of the disc during rotation and return to the internal seed reservoir of the metering device, helping to prevent the occurrence of doubles.

[0021] Although the solution presented in document US10299425 B2 appears to be functional, the seeds scraped from the disc holes that return to the internal seed reservoir may accumulate with the seeds that naturally enter the seed box due to gravity, potentially causing the seed level inside the metering device to rise and impairing singulation capacity.

[0022] In the state of the art there are alternative configurations for bar-shaped singulators, such as brush singulators, as described in patent document CA2491081, by Eben et al. This consists of a set of flexible bristle brushes, positioned to partially overlap the seed passage path. In this singulation configuration, the flexible bristles of the brushes impose on the Petition 870260068702, dated 10 / 07 / 2026, page 14 / 73 6 / 32 seeds coupled in the holes of the disc provide sufficient force to remove excess seeds that may be more loosely coupled in the holes of the rotating disc. This configuration also helps prevent doubles, although it has the disadvantage of a shorter lifespan due to premature wear of the brush bristles. This wear compromises singulation performance.

[0023] In the state of the art, there are still other configurations for the rotating disc comprising a support with various implements as described in patent document BR 102016008945-0, by Assy. Although it solves adjustment and precision problems, the solution in patent BR 102016008945-0 still presents a drawback related to the spacing between the rotating disc and the structure supported by the rotating disc. This drawback is linked to the entry of dirt into said spacing, which can cause the disc to jam and require several maintenance stops, disordered rotation of the disc, causing poor quality distribution, resulting in losses for the farmer, among other problems.

[0024] Although the technologies presented in the state of the art facilitate the farmer's routine, there are still inconveniences that may hinder the planting process, especially when it comes to cleaning and maintaining agricultural equipment, such as removing seed residues (such as husks, for example), soil, twigs, small insects, among others. Currently, there are no known rotary discs and / or structures supported by the rotary disc that allow cleaning / maintenance of said discs and / or structures.

[0025] Currently, with ever-increasing agricultural demands, there is a growing trend towards using machinery capable of transporting large quantities of input dispensers at once, making it necessary to preserve the inputs within the dispensers during transport. Petition 870260068702, dated 10 / 07 / 2026, page 15 / 73 7 / 32

[0026] During the movement of agricultural implements, whether inside or outside the field, the seed meters are often shaken, causing some seeds to leak. In some cases, when the agricultural implements lift and tilt the toolbar that supports the input metering devices, the input metering devices become tilted at angles that, due to gravity, cause the seeds contained in the seed chamber of the input metering devices 1 to be unintentionally spilled onto the soil.

[0027] Furthermore, after the agricultural implements are moved, the input metering device, which was tilted, returns to its working position, causing the seeds that were in the ducts and the internal chamber of the input metering device to be discharged.

[0028] Thus, despite appearing functional up to the present moment, the state-of-the-art dispensers do not have a single device that effectively has a structure supported by the rotating disc, a chamfered edge, a stop, a guide system and its respective cleaning structure, an opening for debris outlet, a hole cleaner, a volume limiter, a sealing and containment structure for inputs, and also a coupling opening complementary to the input dispenser lock. Description of the Invention

[0029] In order to overcome the drawbacks of the prior art, the present invention has as its first objective to improve the internal arrangement of parts that can be associated with input dispensers, as well as to improve the interaction between such parts.

[0030] A second objective is to reduce the accumulation of debris, especially in areas with moving parts, and to provide cleaning of these parts during the operation of the input dosing system. Petition 870260068702, dated 10 / 07 / 2026, p. 16 / 73 8 / 32

[0031] A third objective of the present invention is to contain the seeds within the input dispenser, that is, to prevent seed leakage.

[0032] A fourth objective of the present invention is to facilitate the assembly and maintenance of the input dispenser.

[0033] In order to overcome the drawbacks found in the prior art, the present invention relates to a pneumatic metering assembly comprising a rotating disc with a plurality of radially arranged holes, such holes defining a path for the passage of seeds when said rotating disc rotates, wherein the assembly comprises a structure supported by said rotating disc, a set of seed separators and a stop.

[0034] According to further or alternative embodiments of the invention, the following features, alone or in technically feasible combinations, may also be present: - said structure supported by the rotating disc comprises a rear element and a front element coupled together, with a portion of the rotating disc positioned between the rear element and the front element; - the said structure supported by the rotating disc and the rotating disc forming a single device; - the singulator assembly comprises a protrusion extending from the structure supported by the rotating disk to a region on the front face of the rotating disk, with the ends of the protrusions being tangent to the holes in the rotating disk; - the singulator assembly comprises a protrusion extending from the structure supported by the rotating disc to a region on the front face of the rotating disc, with its ends penetrating the region over the holes in the rotating disc; Petition 870260068702, dated 10 / 07 / 2026, page 17 / 73 9 / 32 - the stop being a protrusion located on the periphery of said structure supported by the rotating disc; - the stop must be positioned at an angle α in the range of 50° to 70° on the structure supported by the rotating disc in relation to the horizontal axis.

[0035] In one embodiment of the present invention, a pneumatic metering assembly is provided comprising a rotating disc with a plurality of radially arranged holes, such holes defining a path for the passage of seeds when said rotating disc rotates, and a structure supported by the rotating disc, wherein the assembly comprises a guide system for the rotation of said rotating disc.

[0036] In addition, the present invention has the following additional or alternative embodiments: - said guide system for rotating the rotating disc comprises a recessed guide circle in said rotating disc and a protrusion in the structure supported by the rotating disc, said protrusion being coupled to said recessed guide circle; - said guide system comprising a raised circle on said rotating disc and a recessed guide circle in the structure supported by the rotating disc, said raised guide circle on the rotating disc being coupled complementarily to said recessed guide circle in the structure supported by the rotating disc; and - said guide system comprises a raised circular arc on the upper face of said rotating disc and a recessed guide circular arc in the structure supported by the rotating disc, wherein said raised guide circularity of the rotating disc is associated with said recessed guide circularity of the structure supported by the rotating disc.

[0037] In one embodiment of the present invention, a pneumatic dosing assembly is provided comprising a rotating disc with a plurality of radially arranged holes, such holes defining a Petition 870260068702, dated 10 / 07 / 2026, page 18 / 73 10 / 32 seed passage path when said rotating disc rotates and a structure supported by the rotating disc equipped with a guide system, wherein the assembly comprises a cleaning structure for the guide system.

[0038] Additionally, the cleaning structure for the guide system may comprise a slot and be situated in the structure supported by the rotating disc adjacent to the guide system.

[0039] In one embodiment of the present invention, a pneumatic dosing assembly is provided, comprising a rotating disc with a plurality of radially arranged holes, such holes defining a path for the passage of seeds when said rotating disc rotates, and a structure supported by the rotating disc, the assembly comprising an opening for the exit of debris.

[0040] In a preferred embodiment, the debris outlet opening is located on the periphery of said structure supported by the rotating disc, in the rear element and / or in the front element; and the rotating disc comprises a toothed edge.

[0041] In one embodiment of the present invention, a pneumatic metering assembly is provided, comprising a rotating disc with a plurality of radially arranged holes, such holes defining a path for the passage of seeds when said rotating disc rotates, and a structure supported by said rotating disc, the assembly comprising a rosette-type hole cleaner.

[0042] The present invention provides the following additional or alternative features: - said rosette-type hole cleaner comprising protrusions, each protrusion having a shape complementary to at least a portion of the shape of the holes in the rotating disc, each protrusion being equipped with a tip; Petition 870260068702, dated 10 / 07 / 2026, page 19 / 73 11 / 32 - said tips being positioned off-center on said prominences; and - the said rotating disc shall comprise, on its rear face, chamfered edges on the periphery of the holes of the rotating disc.

[0043] In one embodiment of the present invention, a pneumatic metering assembly is provided, comprising a rotating disc with a plurality of radially arranged holes, such holes defining a path for the passage of seeds when said rotating disc rotates, and a structure supported by said rotating disc, said structure supported by the rotating disc comprising a front element and a rear element, wherein the edge of said rotating disc is a chamfered edge.

[0044] Preferably, the chamfered edge of the rotating disc is dimensioned in addition to an internal chamfer in the rear element so as to level the rear face of said rotating disc with the rear face of said structure supported by the rotating disc.

[0045] In one embodiment of the present invention, a pneumatic metering assembly is provided, comprising a rotating disc with a plurality of radially arranged holes, such holes defining a path for the passage of seeds when said rotating disc rotates, the assembly comprising a limiting structure that limits the volume of seeds in the seed chamber and, consequently, in contact with the rotating disc.

[0046] Additionally, the limiting structure may comprise a leak-proof barrier with a chamfered end, which is arranged at a predefined distance from the structure supported by the rotating disc.

[0047] In one embodiment of the present invention, a pneumatic metering assembly is provided, comprising a rotating disc with a plurality of radially arranged holes, such holes defining a path for the passage of seeds when said rotating disc rotates, in Petition 870260068702, dated 10 / 07 / 2026, p. 20 / 73 12 / 32 that the assembly comprises a singulator that penetrates radially into the seed passage path, the portion that touches the rotating disc penetrating substantially more than its portion furthest from the rotating disc.

[0048] In one embodiment of the present invention, a pneumatic metering assembly is provided, comprising a rotating disc with a plurality of radially arranged holes, such holes defining a seed passage path when said rotating disc rotates, wherein the pneumatic metering assembly comprises a seed sealing structure between the front region of the rotating disc and the rear region of the rotating disc.

[0049] Furthermore, the sealing structure may be arranged in a structure supported by the rotating disc and may comprise a sealing wall configured to complement an internal surface of a dosing housing.

[0050] In one embodiment of the present invention, a pneumatic seed metering assembly is provided, comprising a rotating disc with a plurality of radially arranged holes, such holes defining a seed passage path when said rotating disc rotates, wherein the rotating disc has a coupling opening provided with a coupling profile complementary to a locking profile of the pneumatic seed metering device.

[0051] The pneumatic dosing assembly has the following additional or alternative embodiments: - the coupling profile of the coupling opening is hexagonal with symmetrical and curved protrusions and recesses; and - The pneumatic seed metering device's locking mechanism has a rotating portion with a rotation angle equal to the angle subtended by one of the curved protrusions or recesses; Petition 870260068702, dated 10 / 07 / 2026, p. 21 / 73 13 / 32 - The pneumatic dispenser comprises a locking mechanism equipped with a rotating portion with a rotation angle equal to 1 / 12 of a turn; and The pneumatic dispenser comprises a locking mechanism that engages a locked position when the end of the locking protrusion is over the end of the rotating disc protrusion.

[0052] In one embodiment of the present invention, a pneumatic metering assembly is provided, comprising a rotating disc with a plurality of radially arranged holes, such holes defining a path for the passage of seeds when said rotating disc rotates, wherein said pneumatic metering assembly comprises a structure supported by said rotating disc, the supported structure comprising a seed containment structure provided with a containment support and a movable barrier.

[0053] The pneumatic dosing assembly has the following additional or alternative embodiments: - the movable barrier includes a counterweight at one end; and The counterweight value must be set in a predefined ratio with reference to the length of the movable barrier. Brief Description of the Drawings [ 0054] The objectives, advantages, technical and functional improvements of the invention will be better understood from reading the descriptions of its particular embodiments, given below with regard to the attached figures, which illustrate particular and non-limiting embodiments, in which: Figure 1 shows a pneumatic seed metering device according to an embodiment of the invention; Figure 2 shows a front view of the open pneumatic seed metering device with metering assembly according to an embodiment of the invention; Petition 870260068702, dated 10 / 07 / 2026, page 22 / 73 14 / 32 Figure 3 shows an exploded view of Figure 2 according to an embodiment of the invention; Figure 4 shows an exploded view of the dosing assembly according to an embodiment of the invention; Figure 5 shows a rear view of the dosing assembly according to an embodiment of the invention; Figure 6 shows an enlarged view of the two-stage singulation region of the assembly in Figure 5 according to an embodiment of the invention; Figure 7 shows a side view in section of the guide region of the assembly according to an embodiment of the invention; Figure 8 shows a side view in section of the guide region of the assembly according to an embodiment of the invention; Figure 9 shows a rear perspective view of the front element of the structure supported by the disc according to a first embodiment of the present invention; Figure 10 shows a front perspective view of the rotating disc according to an embodiment of the present invention; Figure 11 shows a rear perspective view of the front element of the structure supported by the disc according to an embodiment of the present invention; Figure 12 shows a front perspective view of the rotating disc according to an embodiment of the present invention; Figure 13 shows a front perspective view of the dosing assembly according to an embodiment of the invention; Figure 14 shows an enlarged view of the cleaning structure of the guide system as shown in Figure 13; Figure 15 shows a perspective view of the hole cleaner according to an embodiment of the invention; Petition 870260068702, dated 10 / 07 / 2026, page 23 / 73 15 / 32 Figure 16 shows a side view in section of the hole cleaner on a region of the rotating disc according to an embodiment of the invention; Figure 17 shows a side view in section of the rotating disc according to an embodiment of the invention; Figure 18 shows a rear perspective view of an assembly according to an embodiment of the invention; Figure 19 shows a rear view of the assembly as per an embodiment of the invention; Figure 20 shows a front perspective view of a dosing housing according to an embodiment of the invention; Figure 21 shows a rear view of the assembly as per an embodiment of the invention; Figure 22 shows a rear view of the assembly as per an embodiment of the invention; Figure 23 shows a front view of an embodiment of the assembly of the present invention mounted on the pneumatic dispenser; Figure 24 shows a front view of a dispenser lock in the unlocked position according to an embodiment of the invention; Figure 25 shows a front view of a dispenser latch in the locked position according to an embodiment of the invention; Figure 26 shows a front view of an embodiment of the assembly of the present invention mounted without the rotating disc in the pneumatic dispenser; Figure 27 shows a front view of an embodiment of the assembly of the present invention without the rotating disc; Figure 28 shows a front view of an assembly of the containment structure according to an embodiment of the invention; Figure 29 shows a front view of an assembly of the containment structure according to an embodiment of the invention; Petition 870260068702, dated 10 / 07 / 2026, page 24 / 73 16 / 32 Figure 30 shows a front view of the pneumatic dosing unit housing and an assembly of the containment structure according to an embodiment of the invention; and Figure 31 shows a front view of the pneumatic doser housing and an assembly of the containment structure according to an embodiment of the invention. Description of Embodiments of the Invention

[0055] The invention is now described with regard to its particular embodiments, with reference to the accompanying figures. In the figures and description that follow, similar parts are marked with the same reference numbers. The figures are not necessarily to scale, i.e., certain features of the invention may be shown with exaggerated scale or in some schematic way, just as details of conventional elements may not be shown in order to illustrate this description more clearly and concisely.

[0056] The present invention is susceptible to embodiments of different forms. Specific embodiments are described in detail and shown in the figures, it being understood that the description should be considered as an exemplification of the principles disclosed herein, and is not intended to be limited only to what is illustrated and described in this descriptive report. It should be recognized that the different teachings of the embodiments discussed below may be employed separately or in any suitable combination to produce the same technical effects.

[0057] Figure 1 illustrates a closed pneumatic doser 1, developed to accommodate the assembly of the present invention, being presented only by way of example, since the assembly of the present invention can be used in other pneumatic dosers known in the prior art without departing from the scope of the invention. Petition 870260068702, dated 10 / 07 / 2026, page 25 / 73 17 / 32

[0058] The present invention describes an assembly for pneumatic dispensers with improvements aimed at overcoming the drawbacks of the prior art. Figure 2 shows the pneumatic dispenser 1 open, without the lid, with an embodiment of the assembly for the pneumatic dispenser 1 of the present invention fitted inside the pneumatic dispenser 1 in operating position.

[0059] The present invention, when related to the pneumatic metering device 1, allows that, while the rotation of the disc causes the dispersion of the seeds through the agitators 11, the singulation of the seeds in the seed reservoir occurs through the passage of the plurality of holes 6 of the disc through singulators 90. In this way, the seeds are captured by these holes 6 by negative pressure and rotated along the disc until the end of the vacuum region, where the seeds leave the negative pressure and fall by the action of gravity 10, already singulated in an outlet nozzle 9 and are directed to the soil.

[0060] It should be noted that during the seed singulation process, the singulators 90 have the important function of singling the seeds in such a way that only one seed remains through each metering hole of the rotating metering disc 3.

[0061] Figures 2 and 3 show an open pneumatic metering device 1, it can be observed that the pneumatic metering device assembly 1 comprises a rotating disc 3 with a plurality of holes 6, wherein said holes 6 define a path for the passage of seeds 8 when said disc rotates, and a support for fixing said rotating disc 3 inside the metering device, comprising, in turn, a stop 20 and a rosette-type hole cleaner 60.

[0062] As shown in Figures 2 and 3, it is also possible to observe that the pneumatic dosing assembly 1 has a structure supported 7 by the rotating disc 3 containing complementary technologies to solve the problems presented in the prior art concentrated in Petition 870260068702, dated 10 / 07 / 2026, page 26 / 73 18 / 32, a single device, optimizing planting, reducing unnecessary costs, and improving the farmer's experience in the field.

[0063] Given the various known inconveniences that occur during planting, it is noteworthy that the structure supported 7 by the rotating disc 3 rotates by inertia along with the rotating disc 3 in the absence of a fixed support point. Therefore, the rotating disc 3 only captures the seeds through the holes 6 by negative pressure and carries them to the end of the vacuum region, without actually separating what was captured.

[0064] One of the technologies comprised by the pneumatic dosing assembly 1, in an embodiment of the invention, is at least one stop 20 located on the periphery of the supported assembly, wherein said stop 20 comprises a protrusion to prevent the structure supported 7 by the rotating disc 3 from rotating together with the rotating disc 3.

[0065] In this way, the stop 20, in contact with any other fixed surface in relation to the pneumatic metering device 1, such as, for example, the housing 2 of the pneumatic input metering device, interrupts the rotation of the structure supported 7 by the rotating disc 3 and keeps the structures supported by the rotating disc 3 fixed in relation to the pneumatic metering device 1, while the rotating disc 3 rotates and allows the assembly to correctly single the seeds.

[0066] Preferably, the invention consists of protrusions present in the assembly for the pneumatic dispenser 1 that allow the formation of at least one stop 20 on the periphery of the structure supported 7 by the rotating disc 3.

[0067] Alternatively, the invention consists of protrusions present in the assembly for the pneumatic dispenser 1 that allow the formation of two stops 20 on the periphery of the structure supported by the rotating disc 7, with at least one of the stops 20 preventing the structure from rotating in the direction of rotation of the rotating disc 3. Petition 870260068702, dated 10 / 07 / 2026, page 27 / 73 19 / 32

[0068] In a further embodiment, the stop 20 is positioned on said supported structure 7 by the rotating disc 3, forming an angle α with the horizontal axis of the rotating disc 3, the angle α being in the range of 50° to 70°. The configuration of the angle α in the range of 50° to 70° causes the resulting force on the supported structure 7 by the rotating disc 3 to have a responsible vertical component that assists in the proper positioning of the singulators 90.

[0069] Figure 4 shows the dosing assembly in an embodiment of the invention featuring the disc-supported structure separated into two parts, the first part being a front element 5 and the second part a rear element 4. The parts have interlocking means that contain the rotating disc 3 accommodated between the parts in such a way that there are no restrictions on its rotational movement.

[0070] One of the advantages presented in this embodiment is the easy replacement of the assembly for crop change or maintenance, in case any of the parts are damaged, so the farmer can easily replace the entire assembly in the pneumatic metering device 1.

[0071] In particular, the structure supported 7 by the rotating disc 3 and the rotating disc 3 form a single device, and in this embodiment, said fixing support surrounds a portion of the edge of the rotating disc 3 so as not to restrict its rotational movement, allowing the practicality and ease of simply inserting the metering assembly into the pneumatic metering unit 1 and carrying out the planting without the need to configure singulators 90, stops 20, hole cleaners 60 and others for each of its planting rows.

[0072] Therefore, the single device configuration formed by the structure supported by the rotating disc 7 and the rotating disc 3 allows the farmer to start planting more quickly and accurately, without the need for individual adjustments of each part and part of the metering devices to ensure that planting occurs correctly. Petition 870260068702, dated 10 / 07 / 2026, page 28 / 73 20 / 32

[0073] Figure 5 shows the dosing assembly in an embodiment of the invention featuring a structure supported by the rotating disc 7, a stop 20 and a seed singulator assembly.

[0074] As previously stated, singulators 90 are one of the key elements when it comes to seed singulation. It is of utmost importance that the singulator assembly is correctly positioned on the rotating disc 3 and / or the metering assembly to ensure that the seeds are singulated.

[0075] It should be noted that the correct regulation and positioning of the singulators 90 are vital for quality planting. As one of the solutions proposed in the present invention, the dosing assembly is presented having a structure supported by the rotating disc 7 with a set of seed singulators 90 and a stop 20.

[0076] It is worth noting that each crop has seeds of different sizes, shapes, and weights, and to overcome this diversity, it is common to find rotary discs and dosing sets specific to each crop on the market. However, the farmer still needs to position the 90° singulators on these rotary discs, and they are not always positioned precisely. This can vary, with the 90° singulators penetrating excessively into the region of the disc's holes 6, removing all the seeds that pass through, or even positioning the 90° singulators too far from the holes 6 so that they barely touch the seeds and cannot perform singulation.

[0077] For the present invention, the action of the stop 20 in the assembly causes the rotating disc 3 to be directed towards the structure supported by the rotating disc 7, so as to position the rotating disc 3 in the ideal position within the space, also described here as “clearance”, between the rotating disc 3 and the structure supported by the rotating disc 7 to ensure that the singulators 90 supported by the structure supported by the rotating disc 7 are properly Petition 870260068702, dated 10 / 07 / 2026, page 29 / 73 21 / 32 positioned. In other words, the stop ensures that the gap between the rotating disc 3 and the structure supported by the rotating disc 7 does not interfere with the positioning of the singulators 90 when adjusting the rotating disc 3 in relation to the structure supported by the rotating disc 7 and, consequently, of the singulators 3 in relation to the seed passage path 8.

[0078] Figure 6 shows an enlarged view of the seed singulator assembly presented in Figure 5, more precisely, emphasizing the position of the singulators 90 in relation to the holes of the rotating disc 3.

[0079] In a particular embodiment of the invention, the singulators 90 comprise protrusions 93 that extend from the structure supported by the rotating disc 7 to a region on the front face 13 of the rotating disc 3, such that their ends are tangent to the holes 6 of the rotating disc 3 that make up said seed passage path 8.

[0080] In another embodiment of the invention, the singulators 90 also comprise protrusions 93 that extend from the structure supported by the rotating disc 7 to a region on the front face 13 of the rotating disc 3, such that their ends penetrate the region of the holes 6 of the rotating disc 3 that make up said seed passage path 8.

[0081] In this way, the dosing set ensures that the seeds will be correctly singulated according to the crop used, since the dosing set has specific discs, adapted with unique geometries according to each crop.

[0082] In another embodiment of the invention, a guide system 30 is disclosed between the rotating disc 3 and the structure supported by the rotating disc 7. This guide system 30 may also be called a “rail system”.

[0083] The said guide system 30 is intended to keep the rotating disc 3 properly positioned so that it rotates, keeping the singulators 90 constant in relation to the seed passage path 8 and allowing the best quality of seed singulation. Petition 870260068702, dated 10 / 07 / 2026, page 30 / 73 22 / 32

[0084] Figures 7 and 8 show embodiments of the guide system 30, being, respectively, a recessed configuration on the front face 13 of the rotating disc 3 and another raised configuration on the front face 13 of the rotating disc 3, in order to provide the minimum displacement of the rotating disc 3 in relation to the structure supported by the rotating disc 7.

[0085] The elements shown in Figure 7 are shown separately in Figures 9 and 10, being, respectively, the front part of the structure supported by the rotating disc 7 and the rotating disc 3. In this embodiment of said guide system 30 there is a recessed guide circumference in the rotating disc 14 and an arc-shaped protrusion in the fixing support of the rotating disc 3, said protrusion being coupled to the recessed guide circumference 14 of the rotating disc so that it slides within the recess 14 while the rotating disc 3 rotates.

[0086] In another embodiment, the guide system 30 includes a recessed circumference in the structure supported by the rotating disc 31 and a raised circumference in the rotating disc 15, the two circumferences being complementary, allowing the rotational movement of the rotating disc 3 and restricting its movement in other degrees of freedom.

[0087] Furthermore, with regard to the guide system 30 described in the present invention, there is an embodiment in which said guide system 30 for rotation of the rotating disc 3 comprises a recessed guide circumference in the rotating disc 14 and a raised arc of circumference in the structure supported by the rotating disc 32, said raised arc of circumference in the structure supported by the rotating disc 32 being coupled to said recessed guide circumference in the rotating disc 14.

[0088] Similarly, the elements shown in Figure 8 are shown in Figures 11 and 12, being, respectively, the front part of the structure supported by the rotating disc 7 and the rotating disc 3. In this embodiment of the guide system 30, a guide circular arc is shown in relief in Petition 870260068702, dated 10 / 07 / 2026, page 31 / 73 23 / 32 rotating disc 15 and a recessed guide circumference in the structure supported by the rotating disc 31, the protrusion being coupled to said recessed circumference.

[0089] The various possibilities presented in the present invention have unique characteristics when related to seed dosage according to the crop used, possessing preferred configurations according to agronomic studies defining the best performance for certain plantings.

[0090] From the foregoing, it is worth noting that the scope of protection of the invention presented here is not limited to the configurations shown above, but also provides for other possibilities of coupling between the structure supported by the rotating disc 7 and the rotating disc 3 so that the latter can rotate within the structure without moving radially or axially.

[0091] A person skilled in the art can readily identify that, if the structure supported by the rotating disc is not a complete circumference, the proportional circular arc recess will also achieve the technical effects of the present invention.

[0092] Figure 13 shows an embodiment of the invention of the pneumatic dosing assembly 1 comprising an opening for fixing said rotating disc 3 inside the doser, a guide system 30 for the rotating disc 3 associated with its fixing support, a cleaning structure 40 for the guide system 30 and an opening for debris outlet 50.

[0093] The cleaning structure 40 of the guide system 30 allows debris that enters the guide system to exit and not accumulate in the region between the rotating disc 3 and the structure supported by the rotating disc 7.

[0094] Specifically, the cleaning structure 40 performs cleaning by removing pieces of soil, plants, or any other objects that have entered the guide system 30 (rail), thus preventing the disc from jamming. More Petition 870260068702, dated 10 / 07 / 2026, page 32 / 73 Specifically, the rotation of the rotating disc 3 naturally expels debris through the debris outlet slots 41 of the cleaning structure 40; thus, the farmer can maintain production by making fewer stops for maintenance and / or cleaning during planting.

[0095] It is worth noting that the cleaning structure 40 is preferably positioned in line with the guide system 30, so that the debris outlet slots 41 are in the regions with the greatest tendency for debris accumulation and perform the cleaning in the guide system 30 more efficiently.

[0096] Figure 14 shows an enlarged view of the cleaning structure 40 of Figure 13, more precisely emphasizing one of the debris outlet slots 41 and its position on the structure supported by the rotating disc 7 over the region of the guide system 30.

[0097] In other words, the cleaning structure 40 for said guide system 30 comprises a debris outlet slot 41 in the structure supported by the rotating disc 7, more precisely in the interface region of the rotating disc 3 with the structure supported by the rotating disc 7.

[0098] Also to solve inconveniences related to the cleaning and maintenance of the equipment mentioned in the state of the art, Figure 13 also presents another embodiment of the invention, having an opening for the exit of debris 50 that may accumulate in the peripheral region of the rotating disc 3.

[0099] In a particular embodiment of the invention, an opening for the removal of debris 50, such as: soil, seed pieces, bark and stones, is described. This opening is arranged on the periphery of said structure supported by the rotating disc 7.

[00100] In a further embodiment of the invention, there is a set of debris outlet openings 50 positioned in the structure supported by the rotating disc 7, with at least one outlet opening Petition 870260068702, dated 10 / 07 / 2026, page 33 / 73 25 / 32 of debris 50 is located on the periphery of the structure supported by the rotating disc 7 adjacent to the seed singulation chamber inside the pneumatic metering device 1.

[00101] In another embodiment, the set of openings for the exit of debris 50 comprises openings distributed on the side of said structure supported by the rotating disc 7 with toothed edges 51, in such a way that a portion of the toothed edge 51 of the rotating disc 3 is exposed.

[00102] Still dealing with the aforementioned inconvenience regarding the clogging of the holes 6 of the rotating disc 3, Figure 13 also shows, in one embodiment of the invention, a rosette-type hole cleaner 60 that performs the function of eliminating any debris that may become lodged inside the dosing chambers of the rotating disc 3.

[00103] Preferably, the rosette-type hole cleaner 60 is fixed to the structure supported by the rotating disc 7. More preferably, the hole cleaner 60 is fixed to the front part of the structure supported by the rotating disc 7, adjacent to the vacuum chamber of the input dispenser.

[00104] Near the end of the seed singulation process, after the seeds are dislodged from the holes of the rotating disc 3 by vacuum cutting, remnants of debris may accumulate in the holes, making it difficult to capture new seeds to continue the singulation process.

[00105] The rosette-type hole cleaner 60 has as one of its main functions the removal of debris that can accumulate in the holes, hindering the capture of new seeds to continue the singulation process. More specifically, the present invention allows the cleaning of the holes of the rotating disc 3, ensuring that the metering chambers are empty and ready to receive new seeds to be singulated.

[00106] As shown in Figures 15 and 16, in one embodiment, the rosette-type hole cleaner 60 comprises protrusions 61, each of which Petition 870260068702, dated 10 / 07 / 2026, page 34 / 73 26 / 32 prominence 61 has a shape that complements at least a portion of the shape of the holes 6 of the rotating disc 3, and each prominence is equipped with a tip 62.

[00107] The set of protrusions and tips 62 of the rosette-type hole cleaner 60, complementary to the rotating disc 3, has the function of expelling any debris that may accumulate in the holes 6 and ensuring that the holes 6 remain empty, facilitating the placement of a new seed for the next singulation.

[00108] In a further embodiment, said rotating disc 3 comprises, on its front face 13, chamfers on the edges of the holes 63 of the rotating disc 3. The chamfers present on the edges of the holes 63 on the front face 13 of the rotating disc 3 serve to facilitate the entry and exit of the protrusions 61 of the hole cleaner 60, seeking to minimize the friction of the protrusions 62 with portions of the rotating disc 3, thus avoiding premature wear of the components.

[00109] In another embodiment of the hole cleaner 60 of the present invention, the tips 62 of the hole cleaner 60 are positioned in an off-center manner on the protrusions of the hole cleaner 60. This off-center tip configuration 62 serves to compensate for the angles between the hole cleaner 60 and the holes 6 and, like the chamfers on the edges of the holes 63 of the rotating disc 3, is intended to facilitate the entry and exit movement of the tips 62 in the holes of the rotating disc 3, minimizing the friction between the components and increasing the service life of the system.

[00110] In one embodiment of the invention, the chamfered edge 70 of the rotating disc 3 is dimensioned so as to axially level the rear face 12 of the rotating disc 3 with the rear element 4 of said structure supported by the rotating disc 7; such configuration optimizes the space of the assembly so that unevenness is not formed. Unevenness between the rotating disc 3 and the structure supported by the rotating disc 7 would allow the accumulation of debris, which would facilitate the entry Petition 870260068702, dated 10 / 07 / 2026, page 35 / 73 27 / 32 of these debris can get between the rotating disc 3 and the structure supported by the rotating disc 7, potentially causing breakage or premature wear of the assembly.

[00111] Furthermore, the chamfered edge assists in the correct radial arrangement of the rotating disc 3 in relation to the structure supported by the rotating disc 7, so that the 90 singulators fixed to the structure supported by the rotating disc 7 are also correctly arranged in relation to the rotating disc 3 and, consequently, the 90 singulators are in the correct positions in relation to the seed passage path 6.

[00112] Still seeking technical improvements related to seed singulation, Figures 18 and 19 show the dosing assembly in an embodiment of the invention featuring a volume limiter 80 that limits the volume of seeds within the seed chamber and, consequently, limits the contact of the seeds with the rotating disc 3.

[00113] The said volume limiter 80 has the function of preventing the uncontrolled accumulation of seeds inside the input metering device, limiting the entry of seeds through a containment that acts in the region between the rotating disc 3 and the seed inlet opening 17 of the pneumatic input metering device 1 as shown in Figure 20.

[00114] Note that the dosing sets are specifically designed for each crop used, for example, a limiting structure for soybean crops may be different from a limiting structure for corn crops. Thus, in order for the 80 volume limiters to make the best use of their structures designed and developed through solid agronomic knowledge and practical tests observed in the laboratory and during planting, the 80 volume limiter can be associated with a structure supported 7 by the rotating disc 3 forming a single device.

[00115] In another embodiment of the invention, the volume limiter 80 further comprises a leak-proof barrier 81, as shown in Figures 20, 26 and 27, which contains the seeds within. Petition 870260068702, dated 10 / 07 / 2026, page 36 / 73 28 / 32 of the input metering device, preventing seed overflow when the input metering device is tilted in maneuvering and / or maintenance positions or suffers impacts that could project the seeds during planting.

[00116] Preferably, said anti-leakage barrier 81 is associated with the volume limiter 80 and has a shape similar to that of a trough or other shape capable of retaining a certain volume of inputs.

[00117] In one embodiment of the invention, the singulator 90 has a first portion 91 that radially penetrates the seed passage path 8, said first portion 91 touching the rotating disc 3 while a second portion 92 is distant from the rotating disc 3. In other words, the singulator 90 has an inclined protrusion 93, such that only the free end of the protrusion 93 is in contact with the rotating disc 3.

[00118] In particular, the inclination of the protrusion 93 of the singulator 90 can be configured so that the free end of the protrusion is below the plane of the base of the protrusion. This configuration allows the singulators to remain in the correct axial position even with deformations in the structure supported by the rotating disc 7 and / or warping in the rotating disc 3 itself.

[00119] In an alternative embodiment, the present invention comprises a set of singulators, wherein a first singulator 90 is disposed externally to the seed path and a second singulator 90 is disposed internally to the seed path.

[00120] In another alternative embodiment, the set of singulators comprises 90 singulators arranged in sequence and external to the seed path and / or 90 singulators arranged in sequence and internal to the seed path.

[00121] Figures 20 and 21 show an embodiment of the invention with a sealing structure 100 in the dosing assembly. More specifically, the sealing structure is arranged on the rear face of the disc. Petition 870260068702, dated 10 / 07 / 2026, page 37 / 73 29 / 32 rotary and comprises a structure complementary to the internal spaces of the input doser to seal at least a portion of the area of ​​the internal chamber of the pneumatic doser 1 and prevent seeds from leaking into inappropriate parts, such as gear or air exhaust areas, or even into the soil.

[00122] In other words, the said sealing structure 100 has the purpose of partially sealing the dosing chamber, preventing the seeds from passing into regions where the presence of the seed is not expected, harming the planting and production of the farmer.

[00123] Seeking to further optimize the farmer's experience during planting preparation, the present invention discloses a coupling opening 110 in the rotating disc 3 and a lock complementary to the coupling of the rotating disc 3 in the input dispenser, providing the farmer with a quick fitting of the rotating disc 3 in the input dispenser.

[00124] The said locking and coupling assembly is accessible to the user in such a way that it is possible to attach the dosing assembly inside the input doser in planting position without difficulty, for example, using the hands, thus differentiating itself from the technologies presented on the market, which use tools and / or loose attachable locks, facilitating the farmer's routine, especially when he has dozens of input dosers on his planter.

[00125] In one embodiment of the invention, the rotating disc 3 has a coupling opening 110 equipped with a coupling profile complementary to a locking profile of the pneumatic seed metering device 1 as revealed in Figure 26.

[00126] In another embodiment of the invention, the profile of said coupling is hexagonal 111 with symmetrical and curved protrusions and recesses as shown in Figures 23, 24, 25 and 26.

[00127] In yet another embodiment of the invention, the pneumatic dispenser 1 comprises a locking mechanism with curved ridges and recesses. Petition 870260068702, dated 10 / 07 / 2026, page 38 / 73 30 / 32 complementary components comprising the unlocked position 113, as shown in Figure 24.

[00128] In another embodiment of the invention, the pneumatic dispenser 1 comprises a locking mechanism having a rotating portion with a rotation angle equal to the angle between the curved protrusions or recesses comprising the locked position 112, as shown in Figure 25.

[00129] In other words, the locked position 112 occurs when the lock with protrusions and the curved recesses do not coincide, and the unlocked position 113 occurs when the lock with protrusions and the curved recesses coincide.

[00130] Preferably, in one embodiment of the invention, the locking and coupling assembly has a hexagonal profile 111 with symmetrical and curved protrusions and recesses, having a lock with a rotation angle of approximately 30°.

[00131] The present invention also provides a containment structure 120 to keep the seeds inside the metering device when there is a rotation / tilting of the input metering device during planting and / or maneuvering in the field, preventing seed leaks that cause damage to planting and to the farmer's production.

[00132] Seeking to solve the inconveniences presented in the state of the art regarding the general inclinations of input dosers, the present invention discloses, in one embodiment of the invention, a seed containment structure 120 with containment support 123 and movable barrier 122.

[00133] Specifically, the movable barrier is configured to move according to the inclination of the input dispenser 1, such that when the dispenser is in the operating position the movable barrier is in the open passage position and when the dispenser is in the up position Petition 870260068702, dated 10 / 07 / 2026, page 39 / 73 31 / 32 maneuver / maintenance, i.e. tilted or retracted, the mobile barrier is in a blocked passage position.

[00134] Figure 30 shows the input metering device in its normal working position and the seed containment structure 120 in the open-passage position. Note that the seed containment structure 120 in this position allows seeds to pass through. This configuration, in which seeds can pass through, is important so that excess seeds from singulation can return to the seed chamber and do not accumulate in the seed outlet region and eventually fall through the outlet nozzle.

[00135] Figure 31 shows the input metering device in transport position and the seed containment structure 120 in actuation position. Note that the seed containment structure 120 in this position prevents seeds from leaking out of the input metering device and out of the pneumatic metering device 1, avoiding waste of inputs and accumulation of inputs in the soil.

[00136] More specifically, the operation of the containment structure 120 will cause the movable barrier to move in the opposite direction to the inclination of the input doser, in relation to the axis of the rotating disc 3, as revealed in Figures 28 and 29.

[00137] In a practical example, when the planter enters the maneuvering position, the input metering device will naturally be raised in one direction, either clockwise or counterclockwise, and, due to gravity, the end of the containment structure 120 will tend to close the gate in the opposite direction to the inclination of the input metering device.

[00138] In other words, when the pneumatic input dispenser 1 moves clockwise, the movable barrier 122 of the containment structure 120 will tend to move counterclockwise due to the counterweight 121, and when the pneumatic input dispenser 1 moves Petition 870260068702, dated 10 / 07 / 2026, p. 40 / 73 32 / 32 in a counter-clockwise direction, the movable barrier 122 of the containment structure 120 will tend to move in a clockwise direction.

[00139] In this way, the containment structure 120, which preferably comprises a counterweight 121 at its end to move according to the action of gravity, tends to contain the seeds inside the input dispenser at any inclination.

[00140] In general, when the input metering device experiences a slight inclination sufficient to cause the seeds to leak, the gate shown in Figures 28 and 29 will be activated by gravity, preventing the seeds from leaking until the metering device returns to its normal working position.

[00141] In another embodiment of the invention, the containment structure 120 has a movable barrier 122 comprising a counterweight 121 at the end, said counterweight being defined by a predefined ratio with reference to the length of the movable barrier, to prevent the seeds from pushing and preventing the movable barrier 122 of the containment structure 120 from remaining in the blocked passage position during the transport position.

[00142] Therefore, the present invention and its variations offer advantages in the planting process by improving the internal arrangement of parts that can be associated with input dispensers, providing internal cleanliness, preventing seed loss, and facilitating the assembly and maintenance of the dispenser.

[00143] Although the invention has been described specifically in relation to particular embodiments, it should be understood that variations and modifications will be evident to those skilled in the art and may be made without departing from the scope of protection of the present invention. Consequently, the scope of protection is not limited to the embodiments described, but is limited only by the appended claims, the scope of which shall include all equivalents. Petition 870260068702, dated 10 / 07 / 2026, page 41 / 73

Claims

1 / 2 Claims 1. PNEUMATIC DOSER ASSEMBLY (1), comprising a rotating disc (3) with a plurality of holes (6) arranged radially, wherein said holes (6) define a path for the passage of seeds (8) when said rotating disc (3) rotates and a structure supported by the rotating disc (7), characterized by comprising a guide system (30) for the rotation of said rotating disc (3).

2. PNEUMATIC DOSING ASSEMBLY (1), according to claim 1, characterized in that said guide system (30) for rotation of the rotating disc (3) comprises a recessed guide circumference (31) in said rotating disc (3) and a protrusion (32) in the structure supported by the rotating disc (7), said protrusion (32) being coupled to said recessed guide circumference (31).

3. PNEUMATIC DOSING ASSEMBLY (1), according to claim 1, characterized in that said guide system (30) comprises a raised circumference (32) on said rotating disc (3) and a recessed guide circumference (31) in the structure supported by the rotating disc (7), wherein said raised guide circumference (32) of the rotating disc (3) is coupled complementarily to said recessed guide circumference (31) in the structure supported by the rotating disc (7).

4. PNEUMATIC DOSING ASSEMBLY (1), according to claim 1, characterized in that said guide system (30) comprises a raised circular arc (32) on the upper face of said rotating disc (3) and a recessed guide circular arc (31) in the structure supported by the rotating disc (7), wherein said raised guide circumference (32) of the rotating disc (3) is associated with said recessed guide circumference (31) of the structure supported by the rotating disc (7). Petition 870260068702, dated 10 / 07 / 2026, page 42 / 73 2 / 2 5. PNEUMATIC DOSER ASSEMBLY (1), comprising a rotating disc (3) with a plurality of holes (6) arranged radially, wherein said holes (6) define a path for the passage of seeds (8) when said rotating disc (3) rotates and a structure supported by the rotating disc (7) equipped with a guide system (30), characterized by comprising a cleaning structure (40) for the guide system (30).

6. PNEUMATIC DOSING ASSEMBLY (1), according to claim 5, characterized in that said cleaning structure (40) for the guide system (30) comprises a slot (41).

7. PNEUMATIC DOSING ASSEMBLY (1), according to claim 5, characterized in that said cleaning structure (40) for the guide system (30) is located in the structure supported by the rotating disc (7) adjacent to the guide system (30). Petition 870260068702, dated 10 / 07 / 2026, pp. 43 / 73

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